CN212926503U - Protective structure - Google Patents

Abstract

The application provides a protective structure relates to the protector field. This protective structure is used for a screw member including a bolt at least partially exposed, and includes: the protective cap comprises a bottom wall and a side wall, the bottom wall and the side wall are connected into a whole to form a blind hole, the side wall comprises a threaded part connected with the bottom wall and a light wall part connected with the threaded part, the inner wall surface of the threaded part is provided with threads used for being in threaded connection with a bolt, and the free end of the light wall part is provided with a clamping part; the protection pad is provided with a center hole to be sleeved outside the threaded part, and is provided with a matching part used for being connected with the clamping part in a clamping manner so as to be connected with the light wall part to form a sealing blind hole. This kind of protective structure utilizes the protection pad cover to establish in the outside of screw member, later utilizes the bolt threaded connection of helmet and at least partial nut to helmet and protection pad block make the protection pad shutoff blind hole, thereby keep the sealed of blind hole, the screw member that is located the blind hole can obtain fine protection, and convenient operation.

Description

Protective structure

Technical Field

The application relates to the field of protective devices, in particular to a protective structure.

Background

The steel structure pillar along the electrified railway is fixed on the concrete base through the pre-buried foundation bolt. After the steel structure support post is installed, the foundation bolt has a part to expose in natural environment, and this part foundation bolt and the nut supporting with the bolt if expose in natural environment for a long time, can receive the invasion and attack of rainwater, air, pollutant etc to take place to rust, impaired circumstances such as, thereby can bring certain potential safety hazard for the stability to the steel structure support post.

In the prior art, the bolt and the nut are protected by coating butter on the bolt and the nut, and the mode is convenient to operate and short in effective period; in addition, there is a method of isolating air by pouring cement mortar on the bolt and the nut, which has a long period of validity but is complicated to operate.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application provides a protection structure, so as to solve the problems of short protection validity period and complex operation of bolts and nuts.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

the embodiment of the application provides a protective structure for the screw thread spare, the screw thread spare includes the bolt, protective structure includes: the protective cap comprises a bottom wall and a side wall, the bottom wall and the side wall are connected into a whole to form a blind hole, the side wall comprises a threaded portion connected with the bottom wall and a light wall portion connected with the threaded portion, threads used for being in threaded connection with the bolt are arranged on the inner wall surface of the threaded portion, and a clamping portion is arranged at the free end of the light wall portion; the protection pad is provided with a center hole which is sleeved outside the threaded part, and is provided with a matching part used for being connected with the clamping part in a clamping manner so as to be connected and sealed with the light wall part.

Further, the protection pad is made of elastic materials, and the clamping portion extrudes the matching portion in the blind hole sealing state.

Further, the cooperation portion has annular protrusion, joint portion have be used for with annular protrusion complex annular groove, annular protrusion be used for under the blind hole sealed state with annular groove interference fit.

Further, the matching portion is further provided with a first wrapping portion forming the central hole, the first wrapping portion and the annular protrusion are arranged at intervals and located in the blind hole, and the outer wall of the first wrapping portion is attached to the inner wall of the light wall portion.

Further, the light wall part is used for being in interference fit with the first wrapping part in a state that the blind hole is sealed so that the inner wall of the first wrapping part is tightly attached to the threaded piece.

Further, the screw further comprises a nut in threaded connection with the bolt, the nut is located in the blind hole in a sealed state of the blind hole, and the first wrapping portion is used for wrapping the nut.

Further, the fitting portion further has a second wrapping portion disposed at a distance from the annular protrusion and for wrapping at least a portion of an outer wall of the light wall portion.

Further, the second wrapping portion comprises a body and a flange, the flange is formed by protruding the top of the body in a direction close to the annular protrusion, the flange is arranged along the circumferential direction of the body, and the flange is used for being in interference fit with the light wall portion in the blind hole sealing state.

Further, the outer wall of the threaded part is provided with a control part, and the control part is used for obtaining external force to control the protective cap to rotate.

Further, the control part is in a regular hexagonal prism shape.

The protective structure that this application embodiment provided utilizes the protection pad cover to establish in the outside of screw member, utilizes helmet and screw member threaded connection through being provided with the blind hole to helmet and protection pad block make the protection pad shutoff blind hole, thereby keep the sealing of blind hole, avoid the screw member in the blind hole to rust and corrode. The protection structure of this application embodiment adopts the sealed of helmet and protection pad, and simple structure and sealed tight, sealed validity and good reliability.

Drawings

Fig. 1 is a schematic structural diagram of a protective structure provided in an embodiment of the present application in a working state;

FIG. 2 is a partial schematic view of FIG. 1;

FIG. 3 is a schematic structural diagram of a protective cap in a protective structure according to an embodiment of the present disclosure;

FIG. 4 is a first perspective view of a protective pad in a protective structure according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a clamping portion and a mating portion in a protection structure according to an embodiment of the present application in a mated state;

FIG. 6 is a second perspective view of a protective pad in the protective structure according to an embodiment of the present disclosure;

fig. 7 is a third perspective view of a protection pad in a protection structure according to an embodiment of the present application.

Description of reference numerals: 100-a protective structure; 101-blind holes; 110-a bottom wall; 120-a side wall; 121-a threaded portion; 122 — a light wall section; 1221-a control section; 123-a clamping part; 1231-annular groove; 130-protective cap; 140-a protective pad; 141-a mating portion; 142-an annular projection; 143-a first wrapper; 144-a second wrapper; 1441-ontology; 1442-flange; 145-central hole; 210-a bolt; 220-a nut; 230-a gasket; 240-first connector; 250-second connecting member.

Detailed Description

Various combinations of the specific features in the embodiments described in the detailed description may be made without contradiction, for example, different embodiments may be formed by different combinations of the specific features, and in order to avoid unnecessary repetition, various possible combinations of the specific features in the present application will not be described separately.

In the description of the embodiments of the present application, it should be noted that, unless otherwise specified and limited, the term "connected" should be understood broadly, for example, direct connection between entities, or indirect connection through an intermediate, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.

It should be noted that the terms "first \ second" and "first \ second" referred to in the embodiments of the present application are only used for distinguishing similar objects and do not represent a specific ordering for the objects, and it should be understood that "first \ second" and "first \ second" may be interchanged under a specific order or sequence where permitted. It should be understood that "first," "second" distinct objects may be interchanged under appropriate circumstances such that embodiments of the present application described herein may be implemented in an order other than those illustrated or described herein. The terms "inside", "outside", "inner wall", "outer wall" and the like in the embodiments of the present application refer to the symmetry axis of the protection structure in the working state, and the symmetry axis is inside, otherwise outside.

As shown in fig. 1, the present application provides a shielding structure 100 for shielding a threaded member including a partially exposed bolt 210. The term "exposed" means that the bolt is exposed to the air environment and freely contacts with moisture, oxygen, etc. in the air, and the bolt is rusted and corroded due to exposure for a long time. A partially exposed bolt means that a portion is not exposed to air, for example buried in the ground. Of course, the shielding structure 100 provided herein may also be used with threaded members that include all of the exposed bolts 210.

The screw thread spare of this application can be the screw thread spare that uses under various environment, need keep apart the air and carry out the protection, and the kind and the application environment of specific screw thread spare do not cause the restriction to the protective structure of this application. Hereinafter, a guard structure of an anchor bolt will be described as an example. The anchor bolts are partly embedded in the ground or concrete foundation substantially isolated from air, and the other part protrudes to the ground or concrete, and the protective structure protects the part from air.

As shown in fig. 2 and 3, the protective structure 100 includes a protective cap 130 and a protective pad 140. The protective cap 130 includes a bottom wall 110 and a side wall 120, and the bottom wall 110 and the side wall 120 are connected to form the blind hole 101. Specifically, the protective cap 130 may be integrally formed, and the bottom wall 110 is a closed end of the blind hole 101. The side wall 120 includes a threaded portion 121 connected to the bottom wall 110 and a smooth portion connected to the threaded portion 121, an inner wall surface of the threaded portion 121 being provided with a thread for screwing with the bolt 210; in some embodiments, the threaded portion 121 is directly connected to the bottom wall 110, and the optical wall portion 122 is directly connected to the threaded portion 121. The other end of the light wall portion 122 connected to the threaded portion 121 is a free end, the free end is adjacent to the open end of the blind hole 101, and the free end is provided with a clamping portion 123.

As shown in fig. 2 and 4, the protection pad 140 is provided with a central hole 145 to be sleeved outside the screw, specifically, the protection pad 140 and the central hole 145 are both axisymmetric structures, an axis of the central hole 145 coincides with an axis of the protection pad 140, and the screw passes through the central hole 145. The protection pad 140 is sleeved outside the screw member, and may be in close contact with the screw member, or may have a certain gap, and under the condition of close contact, the protection pad may be a close contact bolt, or may be another component in the screw member. The protection pad 140 is provided with a matching portion 141 for snap-fit connection with the snap-fit portion 123, and is fixedly connected with the light wall portion 122 through the snap-fit connection with the snap-fit portion 123 so as to seal the blind hole 101.

In the using process, the protective pad 140 is firstly sleeved outside the threaded piece, and the protective pad 140 is provided with the central hole 145, so that the inner wall of the central hole 145 is attached to the outer wall of the threaded piece, wherein the attachment of the inner wall of the central hole 145 to the outer wall of the threaded piece means that the inner wall of the central hole 145 is closely attached to the outer wall of the threaded piece or a certain gap is formed between the inner wall of the central hole 145 and the outer wall of the threaded piece, but after the protective cap 130 extrudes the protective pad 140, the inner wall of the central hole 145 is closely attached to the outer wall of the threaded piece. Afterwards, the protective cap 130 is screwed into the bolt 210, so that the threaded portion 121 on the protective cap 130 is in threaded connection with the bolt 210, the clamping portion 123 at the free end of the protective cap 130 is matched with the matching portion 141 on the protective pad 140, the protective cap 130 is in clamping connection with the protective pad 140, the blind hole 101 is sealed, and the threaded part in the blind hole 101 can be effectively protected.

Since not only the threaded portion 121 but also the smooth portion is formed in the blind hole 101, the smooth portion can accommodate therein other structures of the screw member than the threaded portion 121. In order for the smooth portion to accommodate more structure, one skilled in the art may size the smooth portion as practical, and in order for the smooth portion to accommodate structure larger than the diameter of bolt 210, the diameter of the smooth portion may be larger than the diameter of threaded portion 121. Of course, in a state where the screw portion 121 and the bolt 210 are screwed, there is a gap between the end surface of the bolt 210 and the bottom surface of the screw portion 121 to prevent a situation where the snap-in portion 123 on the helmet 130 cannot be fitted with the fitting portion 141 on the protection pad 140 due to the presence of assembly tolerance.

The embodiment of the application only needs to sleeve the protective pad 140 outside the screw thread piece and screw the protective cap 130 into the bolt 210 to enable the clamping portion 123 and the matching portion 141 to be matched to seal the blind hole 101, namely protect the screw thread piece, in the using process, so that the operation is convenient, the sealed blind hole 101 is isolated from the outside, and the protective period is long.

In some embodiments, the protective pad 140 may be made of an elastic material, such as rubber, elastic plastic, etc. In the state that the fitting portion 141 is pressed by the catching portion 123, the protection pad 140 having elasticity can be closely attached to the catching portion 123, and the shape of the fitting portion 141 after being pressed is matched with the catching portion 123, and sufficient sealing without a gap between the catching portion 123 and the fitting portion 141 is achieved due to the existence of the pressing force. As shown in fig. 4, the fitting portion 141 has an annular protrusion 142, which protrudes from the bottom of the fitting portion and is disposed around the central hole 145 to form a ring shape. The clamping portion 123 has an annular groove 1231 (see fig. 3) for cooperating with the annular protrusion 142, and specifically, the annular groove is also circumferentially disposed. The annular protrusion 142 is used for interference fit with the annular groove 1231 in a state where the blind hole 101 is sealed. It should be noted that, here, the interference fit between the annular protrusion 142 and the annular groove 1231 may be that the annular protrusion 142 presses all inner walls of the annular groove 1231, or may also mean that the annular protrusion 142 presses part of the inner walls of the annular groove 1231; for example, the top end of the annular protrusion 142 presses the bottom wall 110 of the annular groove 1231, so long as the annular protrusion 142 and the annular groove 1231 maintain a seal between the protective pad 140 and the protective cap 130 in a matched state. Through the interference fit of annular protrusion 142 and annular groove 1231, joint portion 123 is closely attached to fitting portion 141, and the effectiveness of sealing blind hole 101 is guaranteed.

As shown in fig. 4, the fitting portion 141 further has a first wrapping portion 143 forming a central hole 145, i.e., an inner wall of the first wrapping portion 143 is a side wall of the central hole 145. The first wrapping portion 143 is spaced apart from the annular protrusion 142, and specifically, the first wrapping portion 143 is located inside the annular protrusion 142 and forms an annular shape, and a gap space is formed between the first wrapping portion 143 and the annular protrusion. The first wrapping portion 143 is located in the blind hole 101, and an outer wall of the first wrapping portion 143 is attached to an inner wall of the light wall portion 122. The portion of the catching end 123 of the light wall portion 122 between the inner wall of the light wall portion 122 and the annular groove 1231 is inserted into the above-mentioned gap space. Through the laminating of first parcel portion 143 and light wall portion 122, further guaranteed the sealed between joint portion 123 and the cooperation portion 141, and establish at first parcel 143 cover outside the screw, keep under the state of the inner wall of first parcel 143 and the outer wall laminating of screw, the condition that the inner wall of first parcel portion 143 and the inner wall laminating of light wall portion 122 can effectively prevent to lead to because first parcel 143 warp the inner wall of first parcel portion 143 and the screw can not closely laminate takes place, that is to say that the outer wall laminating of first parcel portion 143 can make the inner wall of first parcel portion 143 keep closely laminating in the state of screw in the inner wall laminating of light wall portion 122.

The smooth wall part 122 is used for being in interference fit with the first wrapping part 143 in a state that the blind hole 101 is sealed so as to enable the inner wall of the first wrapping part 143 to be tightly attached to the screw piece; that is, in the sealed state of the blind hole, the pressing force between the light wall portion 122 and the first wrapping portion 143 is mutually applied, so that the fitting is free from a gap, and the effectiveness of the sealing is ensured.

In some embodiments, as shown in fig. 1, the screw member may include a nut 220 screwed with the bolt 210, specifically, a portion of the bolt 210 near the end is screwed with the threaded portion 121 of the protective cap 130, and the nut 220 is screwed with a portion of the bolt 210 relatively far from the end. Under the state that the blind hole 101 is sealed, the nut 220 is positioned in the blind hole 101 and is adjacent to the light wall part 122 of the protective cap 130 at intervals, a certain space is formed between the light wall part 122 and the nut 220, and the first wrapping piece is positioned in the space, wraps the nut 220 and is attached to the outer wall surface of the nut. Through wrapping up and laminating to the supporting nut of bolt, can realize the protection to the screw member including the nut, enlarged this application protective structure's range of application.

In some embodiments, as shown in FIG. 6, the central aperture 145 in the protective pad 140 is configured as a hexagonal prism. Specifically, the shape of the central hole 145 in the protective pad 140 matches the shape of the nut 220, and the protective pad 140 and the nut 220 are in interference or transition fit. When the protection pad 140 is sleeved on the nut 220, the nut 220 is positioned in the central hole 145, and the protection pad 140 wraps the nut 220, so that the side wall of the central hole 145 and the outer wall of the nut 220 are tightly attached, and the sealing effectiveness of the blind hole 101 can be further guaranteed.

Of course, in other embodiments, as shown in fig. 7, the nut 220 may be provided in plural, and there may be a case where plural nuts 220 cannot be matched with the central hole 145 at the same time, in this case, the central hole 145 may be provided as a through hole whose side wall has plural teeth, for example, a through hole whose side wall has 12 to 36 teeth, that is, the specific number of teeth may be 12 teeth, 13 teeth, 14 teeth, 15 teeth, 16 teeth, 17 teeth, 18 teeth, 19 teeth, 20 teeth, 21 teeth, 22 teeth, 23 teeth, 24 teeth, 25 teeth, 26 teeth, 27 teeth, 28 teeth, 29 teeth, 30 teeth, 31 teeth, 32 teeth, 33 teeth, 34 teeth, 35 teeth, 36 teeth, and specifically, a through hole whose side wall may be 24 teeth. In the case where the sidewall of the central bore 145 has a plurality of teeth, a plurality of stacked nuts 220 may be respectively engaged with different teeth for the purpose that the central bore 145 may simultaneously receive a plurality of stacked nuts 220. In the state of accommodating a plurality of nuts 220 stacked together, since the protection pad 140 is pressed by the side wall 120 to be attached to the nuts 220, in the case that the side wall of the central hole 145 has a plurality of teeth, the protection pad can still be attached to the nuts 220 tightly by the side wall 120, so as to further ensure the sealing effectiveness of the blind holes 101.

As shown in fig. 1, the other end of the bolt 210, which is far from the free end (i.e., the end screwed with the screw part 121), is disposed in the second connector 250, and in particular, the second connector 250 may be concrete, and the other end does not need to be protected since it is not exposed to air. Of course, it should be noted that, in the present application, the other end of the bolt 210 away from the free end may also pass through the second connection member 250 to be exposed to the external environment, that is, the head of the bolt 210 may be exposed to the external environment, but since the head of the bolt 210 is corroded, the normal use of the bolt 210 is not affected, and the cooperation between the bolt 210 and the nut 220 is not affected, the protection of the head of the bolt 210 is not considered in the present application.

In some embodiments, as shown in fig. 1, in the portion of the bolt 210 extending out of the second connector 250, a gasket 230 and a first connector 240 are stacked between the nut 220 screwed to the bolt 210 and the second connector 250, the gasket 230 is attached to the bottom surface of the protection pad 140, and the surface of the protection pad 140 contacting the protection cap 130 is opposite to the bottom surface. The washer 230 and the first connecting member 240 are provided to secure the nut 220 to the bolt 210.

Because the outer wall of the light wall 122 is exposed to the external environment, the outer wall of the light wall 122 is corroded, and if the outer wall of the light wall 122 is corroded too deeply, the matching between the clamping portion 123 and the matching portion 141 is affected, and the sealing of the blind hole 101 is affected. As shown in fig. 4, the fitting portion 141 further includes a second wrapping portion 144, and the second wrapping portion 144 is disposed at a distance from the annular protrusion 142 and wraps a portion of the outer wall of the light wall portion 122. Specifically, the second wrapping portion 144 is disposed outside the annular protrusion, and the second wrapping portion 144 is spaced apart from the annular protrusion 142 to form a space to accommodate a portion from the outer wall of the light wall portion 122 to the annular groove 1231. The positioning of the clamping portion 123 and the matching portion 141 is further facilitated by the arrangement of the second wrapping portion 144. As shown in fig. 5, the second wrapping portion 144 wraps the outer wall portion of the light wall portion 122, and the outer wall of the light wall portion 122 can be at least close to the portion of the clamping portion 123 without rusting, so that the clamping portion 123 can be effectively protected, the clamping portion 123 and the matching portion 141 are prevented from being affected by rusting of the clamping portion 123, and the sealing effect of the blind hole 101 is improved. Of course, in other embodiments, the second wrapping portion 144 may wrap the entire outer wall of the light wall portion 122, and it is only necessary that the height of the second wrapping portion 144 is increased to be the same as the height of the light wall portion 122 or higher than the height of the light wall portion 122.

As shown in fig. 5, in some embodiments, the second wrapping portion 144 includes a body 1441 and a flange 1442, the flange 1442 is formed by the top of the body 1441 protruding to a direction close to the annular protrusion 142, and it should be noted that the top of the body 1441 is a free end of the body 1441, is an upper portion in the working state shown in fig. 5, and may be a lower portion if in other working states. A flange 1442 is provided on the inner side of the body 1441, circumferentially along the body 1441, for interference-fitting with the light wall portion 122 in a state where the blind hole 101 is sealed. In a state where the blind hole 101 is sealed, the second wrapping portion 144 is secured in close contact with the light wall portion 123 by the protruding arrangement of the flange 1442. Since the volume of the flange 1442 is small, the force required for tightly fitting the flange 1442 and the outer wall of the light wall part 122 is small, so that pressure can be applied to the flange 1442 under the condition that the body 1441 keeps the shape of the body almost unchanged, and the flange 1442 can be kept tightly fitted with the outer wall of the light wall part 122 for a long time, so that the clamping part 123 can be protected.

In some embodiments, as shown in fig. 3, the outer wall of the threaded portion 121 has a control portion 1221, and the control portion 1221 is used to obtain an external force to control the rotation of the protective cap 130. The external object applies a force to the control portion 1221 to provide a torque to the control portion 1221, so that the control portion 1221 can be rotated, and the threaded portion 121 can be screwed into the bolt 210.

Alternatively, the control portion 1221 has a hexagonal prism shape. The operation of the user can be convenient for manual operation or operation by tools. In other embodiments, the control portion 1221 may also be a rod protruding from the outer wall of the threaded portion 121, and the user may directly pull the rod to control the rotation of the protective cap 130. Or the control portion 1221 may be a groove, and a user may insert a rod into the groove and then pull the rod to control the rotation of the protective cap 130. It is only necessary that the control part 1221 can obtain an external force to control the rotation of the helmet 130.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims (10)

1. A protective structure for a threaded element comprising a bolt, characterized in that it comprises:

the protective cap comprises a bottom wall and a side wall, the bottom wall and the side wall are connected into a whole to form a blind hole, the side wall comprises a threaded portion connected with the bottom wall and a light wall portion connected with the threaded portion, threads used for being in threaded connection with the bolt are arranged on the inner wall surface of the threaded portion, and a clamping portion is arranged at the free end of the light wall portion;

the protection pad is provided with a center hole which is sleeved outside the threaded part, and is provided with a matching part used for being connected with the clamping part in a clamping manner so as to be connected and sealed with the light wall part.

2. The protective structure according to claim 1, wherein said protective pad is made of an elastic material, and said engaging portion presses said engaging portion in a state where said blind hole is sealed.

3. The protective structure according to claim 1 or 2, wherein the fitting portion has an annular projection, and the snap-in portion has an annular groove for fitting with the annular projection, and the annular projection is for interference fit with the annular groove in a state where the blind hole is sealed.

4. The shielding structure of claim 3, wherein the mating portion further has a first wrap portion defining the central aperture, the first wrap portion being spaced apart from the annular protrusion and located within the blind aperture, an outer wall of the first wrap portion being in close proximity to an inner wall of the light wall portion.

5. The shielding structure of claim 4, wherein the light wall portion is configured to be in interference fit with the first wrapping portion in a state that the blind hole is sealed so as to enable the inner wall of the first wrapping portion and the screw to be tightly attached.

6. The shielding structure of claim 4 or 5, wherein the threaded member further comprises a nut threadedly coupled to the bolt, the nut being located within the blind hole, the first wrapping portion being configured to wrap the nut.

7. The protective structure of claim 3, wherein the mating portion further has a second wrap portion spaced from the annular protrusion for wrapping at least a portion of the outer wall of the light wall portion.

8. The protective structure of claim 7, wherein the second wrapping portion comprises a body and a flange, the flange is formed by protruding from the top of the body in a direction close to the annular protrusion, the flange is circumferentially arranged along the body, and the flange is used for interference fit with the smooth wall portion in a sealing state of the blind hole.

9. The shielding structure of claim 1, wherein an outer wall of the threaded portion has a control portion for obtaining an external force to control the rotation of the helmet.

10. The protective structure of claim 9, wherein the control portion has a regular hexagonal prism shape.

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