Telescopic embedded sleeve

Abstract

The utility model relates to the technical field of embedded casing pipes, and discloses a telescopic embedded casing pipe which comprises a first casing pipe body, a second casing pipe body and a connecting structure, fixing plates are fixedly arranged at the positions, close to the middle, of the upper side and the lower side of the first casing pipe body, and a fixing ring is fixedly arranged at the end, close to the first casing pipe body, of the second casing pipe body. Wherein a screw rod is rotationally arranged in one fixing plate close to the upper portion, a rotary button is fixedly arranged at one end of the screw rod, a limiting rod is fixedly arranged at one end of the other fixing plate close to the lower portion, the connecting structure comprises a first connecting ring and a second connecting ring, and four L-shaped grooves are formed in the periphery of the first connecting ring. According to the utility model, the first sleeve body and the second sleeve body are movably sleeved, the fixing ring is in threaded connection with the screw rod, the screw rod is rotated to realize movement between the sleeve bodies, the overlapping area is changed to realize expansion and contraction, the material waste is reduced, the connection structure is arranged to realize rapid splicing and disassembly, and the installation flexibility and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of pre-embedded sleeve technology, and in particular to a retractable pre-embedded sleeve. Background Technology

[0002] Pre-embedded conduit refers to a construction technique in which pipes, cables, optical fibers, and other facilities are pre-installed in concrete, walls, or other structures during the construction of buildings, bridges, tunnels, pipelines, and other projects. Its main purpose is to facilitate subsequent pipeline installation, maintenance, and replacement, avoiding the need for later trenching or drilling in the concrete structure, thereby protecting the integrity of the structure, improving construction efficiency, ensuring the stability of the pipeline, and preventing secondary damage to the structure.

[0003] Most existing embedded sleeves are integral, and the length of the embedded sleeve is difficult to match the construction distance, so the embedded sleeve needs to be cut, which is troublesome and wastes materials, increasing costs. Moreover, multi-section embedded sleeves are mostly connected by steel wire binding or welding, which makes the installation process complicated and wastes time.

[0004] Therefore, those skilled in the art have provided a retractable pre-embedded sleeve to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a retractable pre-embedded sleeve. This pre-embedded sleeve can be extended or retracted, thereby reducing material waste and transportation costs. It also features a connecting structure to facilitate the connection of multiple sleeve sections and improve installation efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A retractable pre-embedded sleeve includes a first sleeve body, a second sleeve body, and a connecting structure. The first sleeve body has a fixing plate fixedly installed on both the upper and lower sides near the middle. The second sleeve body has a fixing ring fixedly installed at one end near the first sleeve body. A screw is rotatably installed inside the fixing plate at the upper part of one of the fixing plates, and a knob is fixedly installed at one end of the screw. A limit rod is fixedly installed at one end of the fixing plate at the lower part of the other fixing plate.

[0008] The connection structure includes a first connecting ring and a second connecting ring. The first connecting ring has four L-shaped grooves around its perimeter and four inner grooves inside. A spring is fixedly installed on one side of each of the four inner grooves, and a plug is fixedly installed at one end of each of the four springs. The second connecting ring has four first grooves on one side of its perimeter. An L-shaped plate is hinged inside each of the four first grooves, and a slot is opened on one opposite side of each of the four L-shaped plates.

[0009] Furthermore, the first connecting ring and the second sleeve body are fixedly connected at one end, and the second connecting ring and the first sleeve body are fixedly connected at one end.

[0010] Furthermore, the screw and the fixing ring are threaded together, and one end of the limiting rod passes through the fixing ring.

[0011] Furthermore, a collar is rotatably provided at one end of the screw, and one end of the limiting rod is fixedly connected to the collar, with the collar and the second sleeve body being movably fitted together.

[0012] Furthermore, a plug ring is fixedly provided at one end of the first connecting ring, a ring groove is provided at one end of the second connecting ring, and a second groove is provided on the opposite side of one end of each of the four L-shaped plates.

[0013] Furthermore, the outer diameter of the first sleeve body at one end is smaller than the inner diameter of the second sleeve body, and the first sleeve body and the second sleeve body are movably fitted together.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model proposes a retractable pre-embedded sleeve, which consists of a first sleeve body and a second sleeve body that are movably fitted together. One end of the second sleeve body is fixedly provided with a fixing ring, which is also movably fitted with the first sleeve body. A fixing plate is fixedly provided on the upper side of the first sleeve body near the middle, and a screw is rotatably provided on it. The screw and the fixing ring are threaded together, so that the fixing ring can be moved in the direction of the screw by rotating the screw, thereby allowing the first sleeve body and the second sleeve body to move together. By changing the overlapping area of ​​the first sleeve body and the second sleeve body, the pre-embedded sleeve can be retracted, thereby reducing material waste and transportation costs.

[0016] 2. The present invention proposes a retractable pre-embedded sleeve. By setting a connection structure, the first connecting ring and the second connecting ring in the connection structure are connected to the first sleeve body and the second sleeve body, respectively. When splicing multiple pre-embedded sleeve sections, multiple L-shaped plates can be rotated into L-shaped grooves, and the two can be fixed by inserting the insert block into the slot. When disassembling, it is only necessary to press the insert block to remove the L-shaped plate from the L-shaped groove, thereby realizing the rapid splicing between multiple pre-embedded sleeve sections. Attached Figure Description

[0017] Figure 1 This is an isometric schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the orthographic section of this utility model;

[0019] Figure 3 This is an isometric view of the No. 1 connecting ring of this utility model;

[0020] Figure 4 This is an isometric view of the No. 2 connecting ring of this utility model;

[0021] Figure 5 This is a cross-sectional axonometric view of the connection structure of this utility model;

[0022] Figure 6 This is an enlarged schematic diagram of point A of this utility model.

[0023] Legend:

[0024] 1. Sleeve body No. 1; 2. Sleeve body No. 2; 3. Connecting structure; 4. Fixing plate; 5. Collar; 6. Screw; 7. Fixing ring; 8. Knob; 9. Limiting rod; 301. Connecting ring No. 1; 302. L-shaped groove; 303. Insert block; 304. Inner groove; 305. Spring; 306. Connecting ring No. 2; 307. Groove No. 1; 308. L-shaped plate; 309. Insert ring; 310. Ring groove; 311. Groove No. 2; 312. Slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 2 One embodiment provided by this utility model:

[0027] A retractable pre-embedded sleeve includes a first sleeve body 1, a second sleeve body 2, and a connecting structure 3. The first sleeve body 1 is fixedly provided with a fixing plate 4 at the middle of both the upper and lower sides. The second sleeve body 2 is fixedly provided with a fixing ring 7 at one end near the first sleeve body 1. A screw 6 is rotatably provided inside the upper fixing plate 4, and a knob 8 is fixedly provided at one end of the screw 6. A limit rod 9 is fixedly provided at one end of the lower fixing plate 4.

[0028] One end of the first connecting ring 301 is fixedly connected to one end of the second sleeve body 2, and one end of the second connecting ring 306 is fixedly connected to one end of the first sleeve body 1. The screw 6 is threaded around the fixed ring 7. One end of the limiting rod 9 passes through the fixed ring 7. One end of the screw 6 is rotatably provided with a collar 5. One end of the limiting rod 9 is fixedly connected to the collar 5. The collar 5 is movably fitted with the second sleeve body 2.

[0029] Specifically, by setting up a movable sleeve body 1 and a sleeve body 2, and by setting up a screw 6 and a fixing ring 7 for threaded connection, rotating the screw 6 causes the fixing ring 7 to move, thereby changing the overlapping area of ​​the sleeve body 1 and the sleeve body 2 to achieve expansion and contraction of the pre-embedded sleeve, thus reducing material waste and transportation costs. A knob 8 is set up to facilitate the rotation of the screw 6. A limiting rod 9 passes through the fixing ring 7 and connects to the collar 5. The limiting rod 9 makes the movement of the sleeve body 2 more stable. By setting up a movable sleeve body 2 with the collar 5, the collar 5 is connected to the screw 6 and the limiting rod 9, thereby supporting the screw 6 and the limiting rod 9. The first connecting ring 301 and the second connecting ring 306 in the connecting structure 3 are connected to the sleeve body 1 and the sleeve body 2 respectively, so that multiple sleeve sections can be spliced.

[0030] Reference Figures 3-6 The connecting structure 3 includes a first connecting ring 301 and a second connecting ring 306. The first connecting ring 301 has four L-shaped grooves 302 around its perimeter and four inner grooves 304 inside its interior. A spring 305 is fixedly installed on one side of the inner wall of each of the four inner grooves 304. A plug block 303 is fixedly installed at one end of each of the four springs 305. The second connecting ring 306 has four first grooves 307 on one side of its perimeter. An L-shaped plate 308 is hinged inside each of the four first grooves 307. A slot 312 is opened on one opposite side of each of the four L-shaped plates 308.

[0031] One end of the first connecting ring 301 is fixedly provided with a plug ring 309, one end of the second connecting ring 306 is provided with a ring groove 310, and the four L-shaped plates 308 are each provided with a second groove 311 on the opposite side of one end. The outer diameter of the first sleeve body 1 near one end is smaller than the inner diameter of the second sleeve body 2. The first sleeve body 1 and the second sleeve body 2 are movably fitted together.

[0032] Specifically, four L-shaped grooves 302 are formed around the first connecting ring 301. Four L-shaped plates 308, hinged to the second connecting ring 306, are inserted into these grooves. Because the upper side of the insert block 303 is sloped, the insert block 303 is compressed when the L-shaped plate 308 is inserted into the L-shaped groove 302. After the insert block 303 aligns with the slot 312, it is reset under the action of the spring 305 and inserted into the slot 312 to secure the L-shaped plate 308. 305 is compressed in the inner groove 304, so that the tension of the spring 305 pushes the insert block 303. By setting the insert ring 309 on one side of the first connecting ring 301 and opening the ring groove 310 on one side of the second connecting ring 306, the insertion ring 309 can be inserted into the ring groove 310 during splicing, which can make the connection part more stable. By opening the second groove 311 on one side of the L-shaped plate 308, it is convenient to open the L-shaped plate 308 by pressing the insert block 303 and then snapping the second groove 311.

[0033] Working principle: When using this pre-embedded sleeve, the length of the sleeve can be adjusted according to the construction position. By rotating the screw 6, the fixing ring 7 can be moved in the direction of the screw 6, thereby moving between the first sleeve body 1 and the second sleeve body 2. By changing the overlapping area of ​​the first sleeve body 1 and the second sleeve body 2, the pre-embedded sleeve can be expanded and contracted, thereby reducing material waste and transportation costs.

[0034] Secondly, when splicing multiple sleeve sections, by rotating multiple L-shaped plates 308 into L-shaped grooves 302, the insert block 303 can be compressed until the insert block 303 and the slot 312 are aligned. Then, under the action of spring 305, it is reset and inserted into the slot 312 to lock and fix the L-shaped plate 308. At the same time, the insertion ring 309 is inserted into the ring groove 310 to make the connection more stable. When disassembling, pressing the insert block 303 can activate the second groove 311 to open the L-shaped plate 308.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A retractable pre-embedded sleeve, comprising a first sleeve body (1), a second sleeve body (2), and a connecting structure (3), characterized in that: The first sleeve body (1) is fixedly provided with a fixing plate (4) on both the upper and lower sides near the middle. The second sleeve body (2) is fixedly provided with a fixing ring (7) near the end of the first sleeve body (1). A screw (6) is rotatably provided inside the fixing plate (4) at the upper part of one of them. A knob (8) is fixedly provided at one end of the screw (6). A limit rod (9) is fixedly provided at one end of the fixing plate (4) at the lower part of the other. The connecting structure (3) includes a first connecting ring (301) and a second connecting ring (306). The first connecting ring (301) has four L-shaped grooves (302) around its perimeter and four inner grooves (304) inside its interior. A spring (305) is fixedly installed on one side of the inner wall of each of the four inner grooves (304). A plug (303) is fixedly installed at one end of each of the four springs (305). The second connecting ring (306) has four first grooves (307) on one side of its perimeter. An L-shaped plate (308) is hinged inside each of the four first grooves (307). A slot (312) is opened on one side of each of the four L-shaped plates (308).

2. The retractable pre-embedded sleeve according to claim 1, characterized in that: The first connecting ring (301) and the second sleeve body (2) are fixedly connected at one end, and the second connecting ring (306) and the first sleeve body (1) are fixedly connected at one end.

3. The retractable pre-embedded sleeve according to claim 1, characterized in that: The screw (6) is threaded around its body and the fixing ring (7), and one end of the limiting rod (9) passes through the fixing ring (7).

4. The retractable embedded sleeve according to claim 1, characterized in that: One end of the screw (6) is rotatably provided with a collar (5), one end of the limiting rod (9) is fixedly connected to the collar (5), and the collar (5) and the second sleeve body (2) are movably sleeved.

5. A retractable pre-embedded sleeve according to claim 1, characterized in that: One end of the first connecting ring (301) is fixedly provided with a plug ring (309), one end of the second connecting ring (306) is provided with a ring groove (310), and the four L-shaped plates (308) are each provided with a second groove (311) on the opposite side of one end.

6. The retractable pre-embedded sleeve according to claim 1, characterized in that: The outer diameter of the first sleeve body (1) at one end is smaller than the inner diameter of the second sleeve body (2), and the first sleeve body (1) and the second sleeve body (2) are movably fitted together.

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