A plugging structure for a cut of a pull screw

Abstract

The application relates to a plugging structure for a cutting position of a pull screw, which comprises a tapered hole, a first cover body, a second cover body, a guide cone and an annular plate. The tapered hole is arranged on a wall of an outer port of the pull screw. The middle part of the first cover body is sleeved on the outer end of the pull screw. The opening inner end of the second cover body is sleeved on the middle part of the first cover body. The guide cone is arranged on the front side of the inner port of the second cover body. The annular plate is sleeved on the outer side of the opening end of the second cover body. The outer expansion ring is arranged between the outer side wall of the annular plate and the first cover body. In the plugging structure for the cutting position of the pull screw, the first cover body is sleeved on the outer end of the pull screw and is matched with the inner wall of the tapered hole at the port to ensure the realization of the sealing structure. The second cover body, the annular plate and the outer expansion ring can limit the first cover body, further strengthen the sealing effect and ensure the quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical seal design, in particular to a plugging structure for a cutting position of a pull bolt. BACKGROUND

[0002] In engineering construction, after the disassembly of some building structures, the use of pull bolts installed in some parts will leave multiple pull bolt holes on the wall. For these multiple pull bolt holes, timely repair or plugging is needed to avoid wall damage leading to building damage and endangering public safety.

[0003] In the prior art, the pull bolt holes of the wall are usually sealed by applying polyurethane waterproof paint. Since there are many gaps in the bolt hole, and the polyurethane waterproof paint has a certain flowability before curing, the traditional application and injection form will produce slight flow during the curing process within a certain time, resulting in a lack of sealing effect or unevenness. The use of high-pressure injection form requires additional sealing structure, and the equipment cannot be quickly transferred, which is low in efficiency. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art and provide a plugging structure for a cutting position of a pull bolt to solve the problem of the lack of sealing effect and the low efficiency of the equipment that cannot be quickly transferred during the curing process within a certain time.

[0005] The technical solution to achieve the above-mentioned purpose is: a plugging structure for a cutting position of a pull bolt, characterized by comprising: a tapered hole, which is provided on the wall of the outer port of the pull bolt, and which accommodates the outer end of the pull bolt, with the opening of the tapered hole facing the outer side of the wall; a first cover body, the middle part of which is a columnar structure, which is vertically arranged on the outer side of the outer end of the pull bolt, the middle part of the first cover body is sleeved on the outer end of the pull bolt, and the outer side wall of the first cover body is in close contact with the inner wall of the tapered hole; a second cover body, which is in the shape of a circular tube with an open inner end and a closed outer end, the open inner end of the second cover body is sleeved on the middle part of the first cover body; a guide cone, which is arranged on the front side of the inner port of the second cover body, and which is sleeved on the first cover body; a ring-shaped plate, which is sleeved on the outer side of the open end of the second cover body; and an expanding ring, which is arranged between the outer side wall of the ring-shaped plate and the first cover body.

[0006] The application discloses a plugging structure of a pull screw cutting position, wherein a first cover is sleeved on the outer end of the pull bolt and is attached to the inner wall of the tapered hole at the port to ensure the realization of the sealing structure; the first cover is limited by a second cover, an annular plate and an outer expansion ring to further strengthen the sealing effect and avoid the flow of the waterproof material during solidification of the high-pressure injection, thereby improving the sealing effect and ensuring the quality.

[0007] The application further improves the plugging structure of the pull screw cutting position, wherein the outer end of the pull bolt is located on the inner side of the outer side of the wall.

[0008] The application further improves the plugging structure of the pull screw cutting position, wherein the first cover comprises a cap, the inner wall of the cap is attached to the pull bolt, and a tapered bowl is in a conical cylindrical structure with open ends and is fixed to the port of the cap.

[0009] The application further improves the plugging structure of the pull screw cutting position, wherein the tapered bowl comprises a connecting ring, the inner ring of the connecting ring is fixedly connected to the port of the cap, and the connecting ring is arranged in parallel with the annular plate.

[0010] The application further improves the plugging structure of the pull screw cutting position, wherein the outer wall of the cap is processed with an external thread structure, the inner wall of the second cover is processed with an internal thread structure, the second cover can be screwed on the cap, and the second cover is abutted against the outer end surface of the guide cone after being screwed.

[0011] The application further improves the plugging structure of the pull screw cutting position, wherein the inner diameter of the second cover is equal to the outer diameter of the cap, the inner diameter of the second cover is equal to the diameter of the outer end surface of the guide cone, and the inner diameter of the cap is smaller than the diameter of the pull bolt.

[0012] The application further improves the plugging structure of the pull screw cutting position, wherein the connecting ring and the annular plate are both provided with a communication port penetrating through the inner and outer walls.

[0013] The application further improves the plugging structure of the pull screw cutting position, and further comprises a high-pressure injection nozzle, the high-pressure injection nozzle can be inserted into the communication port and inject liquid material into the interior.

[0014] The application further improves the plugging structure of the pull screw cutting position, wherein the annular plate is screw-connected with the second cover, and the outer expansion ring is screw-connected with the annular plate.

[0015] The application further improves the plugging structure of the pull screw cutting position, wherein the first cover is an integral structure and is made of an elastic material. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the sealing structure of the present invention, which is fitted into the tie bolts inside the wall and seals the tapered holes at the ends of the tie bolts.

[0017] Figure 2 This is a cross-sectional view of the sealing structure of the present invention.

[0018] In the diagram: 10. Sealing structure; 101. Conical hole; 102. First cover; 1021. Cap; 1022. Conical bowl; 10221. Connecting ring; 103. Second cover; 104. Guide cone; 105. Annular plate; 106. Outer expansion ring; 107. High-pressure injection nozzle; 11. Wall; 12. Tie bolt; 13. Waterproof mortar layer. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] In an embodiment of the present invention, the tie bolt 12 forms a water-permeable gap on the inner and outer surfaces of the wall 11, and an inner waterproof mortar layer 13 is formed on the inner surface of the wall 11 by uniformly applying dry waterproof mortar, and the inner waterproof mortar layer 13 is used to form a waterproof seal for the gap on the inner surface of the wall 11.

[0021] See Figure 1 The image shows a cross-sectional view of the sealing structure of the present invention, which is fitted into the wall 11 to seal the tie bolt 12 and the conical hole 101 at the end of the tie bolt 12. The present invention provides a sealing structure for the cut end of a tie bolt, comprising: a conical hole 101, which is formed in the wall 11 at the outer end of the tie bolt 12, accommodates the outer end of the tie bolt 12, and the opening of the conical hole 101 faces outward from the wall 11.

[0022] Waterproof sealant is pre-applied to the inner wall of the conical hole 101.

[0023] The first cover 102 has a columnar structure in the middle. The first cover 102 is vertically arranged on the outside of the tie bolt 12. The inner wall of the first cover 102 is sleeved on the outer end of the tie bolt 12, and the outer wall of the first cover 102 is in contact with the inner wall of the conical hole 101.

[0024] The first cover 102 fits against the inner wall of the conical hole 101 to form a sealing structure.

[0025] The second cover 103 is a cylindrical structure with an open inner end and a closed outer end. The inner end of the opening of the second cover 103 is fitted onto the middle part of the outer wall of the first cover 102.

[0026] The second cover 103 is described in detail below, and thus is not described herein.

[0027] The guide cone 104 is arranged at the front side of the inner port of the second cover 103, and is sleeved on the first cover 102.

[0028] The guide cone 104 is in a circular truncated cone structure, the larger end face of the guide cone 104 is an outer end face, and the smaller end face is an inner end face.

[0029] The annular plate 105 is sleeved on the outer side of the second cover 103.

[0030] The annular plate 105 is perpendicular to the tension bolt 12.

[0031] The outer expansion ring 106 is arranged between the outer side wall of the annular plate 105 and the first cover 102.

[0032] The thickness of the outer expansion ring 106 is greater than the thickness of the annular plate 105.

[0033] The present application provides a sealing structure of a tension bolt cutting position.

[0034] The outer end of the tension bolt needs to be cut off, and the cutting length is greater than the total thickness of the first cover and the second cover 103.

[0035] Referring to Figure 2 , a cross-sectional view of the sealing structure of the present application is shown. The present application provides a sealing structure of a tension bolt cutting position, and the first cover 102 comprises: a cap 1021, the inner wall of the cap 1021 is in close contact with the outer end of the tension bolt 12.

[0036] The cap 1021 is in a circular tube structure with an open inner end and a closed outer end.

[0037] The cone bowl 1022 is in a circular truncated cone structure with open inner and outer ends, and the cone bowl 1022 is fixed to the port of the cap 1021.

[0038] In this embodiment, the outer side wall of the cone bowl 1022 is in close contact with the taper hole 101, and the outer side wall of the cone bowl 1022 is in contact with the waterproof sealant to form an airtight structure.

[0039] The present application provides a sealing structure of a tension bolt cutting position, and the cone bowl 1022 comprises: a connecting ring 10221, the inner ring port of the connecting ring 10221 is fixedly connected to the port of the cap 1021.

[0040] The connecting ring 10221 is vertically arranged on the port of the cap 1021.

[0041] The connecting ring 10221 is arranged in parallel with the annular plate 105.

[0042] In the embodiment, the connecting ring 10221 and the annular plate 105 are both vertically arranged with the tension bolt 12.

[0043] Referring to Figure 2 , a sectional view of the sealing structure of the present application is shown. The present application provides a sealing structure for the cut of the tension bolt, and the outer wall of the cap 1021 is provided with an external thread structure.

[0044] The diameter of the cap 1021 is greater than the diameter of the tension bolt 12.

[0045] The inner wall of the second cap 103 is provided with an internal thread structure.

[0046] The inner annular wall of the second cap 103 is in contact with the outer annular wall of the cap 1021.

[0047] The second cap 103 can be screwed onto the cap 1021.

[0048] In the embodiment, the internal thread structure of the second cap 103 is matched with the external thread of the cap 1021, so that the second cap 103 can be linearly adjusted relative to the cap 1021 when being rotated, and the second cap 103 is externally threaded on the cap 1021 based on the internal thread structure thereof.

[0049] The second cap 103 abuts against the outer end surface of the guide cone 104 after being screwed.

[0050] After the second cap 103 is screwed, the port of the second cap 103 exactly presses the guide cone 104.

[0051] The present application provides a sealing structure for the cut of the tension bolt, and the inner diameter of the second cap 103 is equal to the outer diameter of the cap 1021.

[0052] The second cap 103 is sleeved on the cap 1021.

[0053] The inner diameter of the second cap 103 is equal to the diameter of the outer end surface of the guide cone 104.

[0054] The inner diameter of the second cap 103 is less than the diameter of the inner end surface thereof.

[0055] The inner diameter of the cap 1021 is less than the diameter of the tension bolt 12.

[0056] In this embodiment, when the second cover 103 is screwed inward, due to the restriction and guidance of the guide cone 104, and the elasticity of the cap 1021 itself, the inner end of the cap 1021 deforms and converges under the squeezing action of the second cover 103, thereby clamping the tie bolt 12 with the cap 1021. This clamping method is mainly used to further fix the cap 1021 when there is a slight mismatch between the cap 1021 and the tie bolt 12. In fact, the inner diameter of the cap 1021 should be slightly smaller than that of the tie bolt 12. When the tie bolt 12 is inserted into the cap 1021, the rebound effect of the cap 1021 is used to clamp the tie bolt 12, and the screwing in of the second cover 103 makes this closing and clamping effect even better.

[0057] The present invention provides a sealing structure for the cut of the tie rod, wherein the connecting ring 10221 and the annular plate 105 are provided with through ports.

[0058] In this embodiment, the connecting ring 10221 and the connecting port on the annular plate 105 are on the same straight line.

[0059] See Figure 2 The image shows a cross-sectional view of the sealing structure of the present invention. The present invention provides a sealing structure for the cut portion of a tie rod, further comprising: a high-pressure injection nozzle 107, which can be inserted into a communication port to inject liquid material into the port.

[0060] In this embodiment, polyurethane waterproof material is selected as the liquid material. Due to the high pressure, the polyurethane waterproof material can be pressed into the gap and does not flow during subsequent curing, thereby producing a good sealing effect.

[0061] The high-pressure injection nozzle 107 is hollow, and its outer end is connected to an external pipe, allowing polyurethane waterproofing material to be injected.

[0062] See Figure 2 The image shows a cross-sectional view of the sealing structure of the present invention. The present invention provides a sealing structure for the cut of a tie rod, wherein an annular plate 105 is threadedly connected to a second cover 103; and an outer expansion ring 106 is threadedly connected to an annular plate 105.

[0063] Among them, after the outer expansion ring 106, the annular plate 105 and the second cover 103 are threaded together, the outer expansion ring 106, the annular plate 105 and the second cover 103 form a whole.

[0064] When the second cover 103 is linearly advanced, the outer expansion ring 106 contacts and expands the conical bowl 1022 outward until the conical bowl 1022 is tightly fitted with the inner surface of the conical hole 101, and of course the inner surface of the conical hole 101 is previously coated with waterproof sealant, at this time the conical bowl 1022 contacts and extrudes the waterproof sealant to form an airtight structure.

[0065] The application provides a plugging structure of a pull screw cutting part, the first cover 102 is an integral structure, and the first cover 102 is made of elastic material.

[0066] In the embodiment, the first cover 102 made of elastic material has a certain deformable property as a whole, and can be more fitted with each component.

[0067] The working process of the plugging structure of the pull screw cutting part is as follows:

[0068] The first cover 102 is sleeved on one end of the pull bolt 12 in the conical hole 101, wherein the outer conical surface of the conical bowl 1022 in the first cover 102 can be fitted with the inner wall of the conical hole 101 to form a seal;

[0069] The second cover 103 is screwed on the cap 1021 in the first cover 102, because of the limitation and guidance of the guide cone 104, and the cap 1021 itself has elasticity, the inner port of the cap 1021 is deformed and gathered under the extrusion of the second cover 103, so that the cap 1021 further clamps the end of the pull bolt 12;

[0070] When the second cover 103 is screwed, the outer expansion ring 106 contacts and expands the conical bowl 1022 outward until the conical bowl 1022 is tightly fitted with the inner wall of the conical hole 101, and the inner wall of the conical hole 101 is previously coated with waterproof sealant, and the conical bowl 1022 contacts and extrudes the waterproof sealant to form an airtight structure;

[0071] When the outer expansion ring 106 expands and tightens the conical bowl 1022, the high-pressure injection nozzle 107 is inserted from the outside to the inside based on the communication port, and the waterproof material is high-pressure injected into the conical hole 101 inside the cap 1021 based on the high-pressure injection nozzle 107 until solidification;

[0072] After the waterproof material solidifies, a waterproof mortar layer 13 is applied on the outer surface of the wall body 11 for protection.

[0073] The application is described in detail in combination with the embodiments of the drawings, and those skilled in the art can make various changes to the application according to the above description. Therefore, some details in the embodiments should not constitute a limitation on the application, and the protection scope of the application is defined by the appended claims.

Claims

1. A sealing structure for the cut section of a tie rod, characterized in that, include: A tapered hole is formed in the wall at the outer end of the tie bolt, the tapered hole accommodates the outer end of the tie bolt, and the opening of the tapered hole faces outward from the wall. The first cover has a columnar structure in the middle part. The first cover is vertically disposed on the outside of the outer end of the tie bolt. The inner wall of the middle part of the first cover is sleeved on the outer end of the tie bolt, and the outer wall of the first cover is in contact with the inner wall of the conical hole. The second cover is a cylindrical structure with an open inner end and a closed outer end, and the open inner end of the second cover is fitted onto the middle part of the first cover. A guide cone is disposed on the front side of the inner port of the second cover, and the guide cone is sleeved on the first cover; An annular plate, which is sleeved on the outside of the opening end of the second cover; An outer expansion ring is disposed between the outer wall of the annular plate and the first cover. The first cover includes: a cap, the inner wall of which is in contact with the outer end of the tie bolt; The conical bowl has a conical cylindrical structure with openings at both the inner and outer ends, and the conical bowl is fixed to the port of the cap; The conical cup includes: a connecting ring, the inner opening of which is fixedly connected to the port of the cap; The connecting ring is arranged parallel to the annular plate; The outer wall of the cap is machined with an external thread structure; The inner wall of the second cover is machined with an internal thread structure; The second cover can be screwed onto the cap; After the second cover is screwed on, it abuts against the outer end face of the guide cone; Both the connecting ring and the annular plate are provided with through ports that extend from the inside out. It also includes: a high-pressure injection nozzle, which can be inserted into the communication port and inject liquid material into it; The first cover is a one-piece structure and is made of an elastic material.

2. The sealing structure at the cut end of the tie rod according to claim 1, characterized in that, The inner diameter of the second cover is equal to the outer diameter of the cap; The inner diameter of the second cover is equal to the outer end face diameter of the guide cone; The inner diameter of the cap is smaller than the diameter of the tie bolt.

3. The sealing structure at the cut end of the tie rod according to claim 1, characterized in that, The annular plate is threadedly connected to the second cover body; The outer expansion ring is threadedly connected to the annular plate.

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