CN211574551U

CN211574551U - Screw convenient to installation

Info

Publication number: CN211574551U
Application number: CN201922444002.0U
Authority: CN
Inventors: 卢艳梅
Original assignee: Tianjin Jiudong Machinery Parts Co ltd
Current assignee: Tianjin Jiudong Machinery Parts Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-09-25
Anticipated expiration: 2029-12-28

Abstract

The utility model discloses a screw convenient for installation, which comprises a foundation screw shell, an installation device and a protection device, wherein one end of the foundation screw shell is movably provided with the installation device, the outer surface of the foundation screw shell is fixedly provided with the protection device, the installation device comprises a base, the foundation screw is fixedly arranged in the foundation screw shell, the screw convenient for installation is provided with a first fixed block connected with a second fixed block connected with a spring, the spring is connected with a positioning block, when the foundation screw is required to be installed, the positioning groove at the bottom of the foundation screw is aligned with the first fixed block to be put in, the positioning block at one end of the second fixed block can extrude the spring until the spring enters the positioning groove, the positioning block and the positioning groove are mutually embedded at the moment, the first thread layer and the second thread layer are arranged together, a screw bolt is twisted, the first thread layer can be fixed with the second thread layer together, therefore, the installation of a user is facilitated, and installation errors caused by complex installation can be avoided.

Description

Screw convenient to installation

Technical Field

The utility model relates to a screw technical field especially relates to a screw convenient to installation.

Background

The anchor bolts are generally Q235, Q345, i.e. smooth round. It seems that i have not seen the use of threads, but have not tasted if the force needs it. The screw-thread steel (Q345) has high strength, and the screw thread of the nut is easy to be manufactured without smooth circles. For smooth round anchor bolts, the burial depth is typically 25 times its diameter, and then a 90-degree hook is made that is about 120mm long. If the bolt diameter is large (e.g. 45mm) and the depth of the penetration is too deep, a square plate can be welded at the end of the bolt, i.e. a large head can be made (although it is also required). The burying depth and the hook are both used for ensuring the friction force between the bolt and the foundation so as not to pull out and damage the bolt. Therefore, the tensile capacity of the foundation bolt is the tensile capacity of the round steel, and the allowable tensile bearing capacity when the size of the tensile capacity is equal to the product of the cross-sectional area and the design value (140MPa) of the tensile strength is designed. The ultimate tensile capacity is the cross-sectional area (which should be the effective area at the thread) multiplied by the tensile strength of the steel (the Q235 tensile strength is 235 MPa). The tensile resistance at the time of design is smaller than the ultimate tensile resistance because the design value is biased toward safety.

Traditional rag screw can lead to the rag screw to install some inaccuracy in the aspect of the installation because of the complicacy of installation, will cause unnecessary trouble simultaneously some rag screws not directly contact with the medium, nevertheless because of various reasons, have corrosive medium on probably being transmitted the rag screw to make the rag screw take place to corrode.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a screw convenient to install.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a screw convenient to installation, includes rag screw shell, installation device and protection device, the one end movable mounting of rag screw shell has installation device, the fixed surface of rag screw shell installs protection device.

The mounting device comprises a base, the inside fixed mounting of rag screw shell has the rag screw, the constant head tank has been seted up to the bottom of rag screw, the top fixed mounting of base has first fixed block, first screw thread layer has been seted up to the one end of first fixed block, the one end movable mounting on first screw thread layer has the bolt, second screw thread layer has been seted up to the one end of rag screw, the one end fixed mounting of first fixed block has the second fixed block, the inside movable mounting of second fixed block has the spring, the one end movable mounting of second fixed block has the locating piece.

The protection device comprises a first protection layer, a second protection layer is fixedly mounted at one end of the first protection layer, and a third protection layer is fixedly mounted at one end of the second protection layer.

As a further description of the above technical solution:

the positioning block and the positioning groove are identical in shape and are mutually matched.

As a further description of the above technical solution:

the number of the first thread layers is two, and the two first thread layers are identical in shape and are parallel to each other.

As a further description of the above technical solution:

the number of the second thread layers is two, and the two second thread layers are identical in shape and are parallel to each other.

As a further description of the above technical solution:

the first protective layer is made of a tetrafluoroethylene-propylene rubber layer.

As a further description of the above technical solution:

the second protective layer is made of a nylon material layer.

As a further description of the above technical solution:

the third protective layer is made of a high-silicon cast iron layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this screw convenient to installation, through installation device, the rag screw, the constant head tank, a pedestal, first fixed block, first screw thread layer, a bolt, second screw thread layer, the second fixed block, mutually support between spring and the locating piece, the second fixed block is being connected to first fixed block, the spring is being connected to the second fixed block, the locating piece is being connected to the spring, when needs installation rag screw, place into on the constant head tank alignment first fixed block of rag screw bottom, the locating piece of second fixed block one end just can extrude the spring until getting into in the constant head tank, the locating piece inlays each other with the constant head tank this moment, first screw thread layer and second screw thread layer are in the same place, the wrench movement bolt, first screw thread layer alright be in the same place with second screw thread layer is fixed, so just made things convenient for user's installation, can not lead to install the error because of the installation compli.

2. This screw convenient to installation through mutually supporting between protection device, first protective layer, second protective layer and the third protective layer, adds a layer of high-silicon cast iron layer earlier in the outside of rag screw shell, adds one deck nylon material layer in the high-silicon cast iron layer surface, adds the one deck tetrapropylene fluororubber layer in the outside on nylon material layer, like this alright in order to increase rag screw's corrosion resistance, increased rag screw's life-span.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

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

FIG. 2 is an enlarged view of the structure of the portion A in FIG. 1;

fig. 3 is a schematic structural view of the protection device of the present invention.

In the figure: 1. a foundation screw shell; 2. a mounting device; 201. a foundation screw; 202. positioning a groove; 203. a base; 204. a first fixed block; 205. a first thread layer; 206. a bolt; 207. a second threaded layer; 208. a second fixed block; 209. a spring; 210. positioning blocks; 3. a protection device; 301. a first protective layer; 302. a second protective layer; 303. and a third protective layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, a screw convenient to mount comprises an anchor screw shell 1, a mounting device 2 and a protection device 3, wherein the mounting device 2 is movably mounted at one end of the anchor screw shell 1, and the protection device 3 is fixedly mounted on the outer surface of the anchor screw shell 1.

The mounting device 2 comprises a base 203, a ground screw 201 is fixedly mounted inside a ground screw shell 1, a positioning groove 202 is formed in the bottom of the ground screw 201, a first fixing block 204 is fixedly mounted at the top of the base 203, a first thread layer 205 is formed in one end of the first fixing block 204, the number of the first thread layers 205 is two, the shapes of the two first thread layers 205 are the same and are parallel to each other, a bolt 206 is movably mounted at one end of the first thread layer 205, a second thread layer 207 is formed in one end of the ground screw 201, the number of the second thread layers 207 is two, the shapes of the two second thread layers 207 are the same and are parallel to each other, a second fixing block 208 is fixedly mounted at one end of the first fixing block 204, a spring 209 is movably mounted inside the second fixing block 208, a positioning block 210 is movably mounted at one end of the second fixing block 208, and the positioning block 210 and the positioning groove 202 are the same in shape.

The protection device 3 includes a first protection layer 301, the first protection layer 301 is made of a teflon layer, one end of the first protection layer 301 is fixedly mounted with a second protection layer 302, the second protection layer 302 is made of a nylon material layer, one end of the second protection layer 302 is fixedly mounted with a third protection layer 303, and the third protection layer 303 is made of a high-silicon cast iron layer.

The working principle is as follows: the first fixing block 204 is connected with the second fixing block 208, the second fixing block 208 is connected with the spring 209, the spring 209 is connected with the positioning block 210, when the foundation screw 201 needs to be installed, the positioning groove 202 at the bottom of the foundation screw 201 is aligned to the first fixing block 204 and placed in, the positioning block 210 at one end of the second fixing block 208 can extrude the spring 209 until the spring 209 enters the positioning groove 202, at the moment, the positioning block 210 and the positioning groove 202 are inlaid with each other, the first thread layer 205 and the second thread layer 207 are arranged in parallel, the bolt 206 is twisted, the first thread layer 205 can be fixed with the second thread layer 207 together, thus facilitating the installation of a user, avoiding installation errors caused by complex installation, a high-silicon cast iron layer is firstly added outside the foundation screw shell 1, a nylon material layer is added outside the high-silicon cast iron layer, a tetrapropylene fluoride rubber layer is added outside the nylon material layer, thus, the corrosion resistance of the anchor screw 201 can be increased, and the service life of the anchor screw 201 can be prolonged.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A screw convenient to mount comprises a foundation screw shell (1), a mounting device (2) and a protection device (3), and is characterized in that the mounting device (2) is movably mounted at one end of the foundation screw shell (1), and the protection device (3) is fixedly mounted on the outer surface of the foundation screw shell (1);

the mounting device (2) comprises a base (203), a foundation screw (201) is fixedly mounted inside the foundation screw shell (1), a positioning groove (202) is formed in the bottom of the foundation screw (201), a first fixing block (204) is fixedly mounted on the top of the base (203), a first thread layer (205) is formed in one end of the first fixing block (204), a bolt (206) is movably mounted at one end of the first thread layer (205), a second thread layer (207) is formed in one end of the foundation screw (201), a second fixing block (208) is fixedly mounted at one end of the first fixing block (204), a spring (209) is movably mounted inside the second fixing block (208), and a positioning block (210) is movably mounted at one end of the second fixing block (208);

protection device (3) include first protective layer (301), the one end fixed mounting of first protective layer (301) has second protective layer (302), the one end fixed mounting of second protective layer (302) has third protective layer (303).

2. An easily installable screw according to claim 1, wherein the locating block (210) and the locating slot (202) are of the same shape and are adapted to each other.

3. A screw facilitating mounting according to claim 1, wherein the number of first thread layers (205) is two, and the two first thread layers (205) are identical in shape and parallel to each other.

4. A screw facilitating mounting according to claim 1, wherein the number of the second thread layers (207) is two, and the two second thread layers (207) have the same shape and are parallel to each other.

5. A screw for facilitating installation according to claim 1, wherein the first protective layer (301) is made of a teflon layer.

6. A screw for facilitating mounting according to claim 1, wherein the second protective layer (302) is made of a nylon material.

7. A screw for easy mounting according to claim 1, wherein the third protective layer (303) is made of a high silicon cast iron layer.