Embedded sleeve with multiple connection modes

Abstract

The utility model discloses an embedded sleeve with multiple connection modes. The sleeve comprises a sleeve body used for being pre-buried in a pipe piece, the sleeve body comprises a rod body and a sleeve head connected to the tail end of the sleeve, a threaded hole used for being connected with a connecting bolt in a screwed mode is formed in the head end of the rod body, a blind hole axially penetrating through the threaded hole is further formed in the rod body, and a remaining cavity is formed in the side wall close to the tail end of the blind hole. The blind hole and the remaining cavity jointly form a cavity, and when the threaded hole is blocked or damaged, an expansion bolt or a chemical anchor bolt can be installed in the cavity to replace a connecting bolt. The utility model has the advantages that when the thread cannot be used after being damaged or blocked and the sleeve is difficult to adjust due to deflection, the sleeve does not need to be adjusted, effective installation can be realized through the fasteners, in addition, even if the threaded hole is damaged or blocked, the construction operation can still be quickly and efficiently carried out, the labor intensity of workers is reduced, and the construction operation efficiency is greatly improved; and the construction flexibility and the environmental protection property are also obviously improved.

Description

Technical Field

[0001] The utility model relates to a shield embedded sleeve for urban rail transit, in particular to an embedded sleeve with multiple connection methods. Background Technique

[0002] With the continuous development of construction engineering and mechanical assembly technology, embedded sleeves are increasingly widely used in various structures. As a key component of connecting members, the role of the embedded sleeve is to provide a fixed position and stable support for subsequent installation and fastening. Conventional embedded sleeve structures often have disadvantages such as a single bolt installation method, inability to be used after thread damage or blockage, and difficulty in adjusting the skew of the sleeve. For example, a utility model patent with a publication number of CN 20901000 U and a name of "Rail Transit Segment Embedded Part" is disclosed in the Chinese patent. This utility model relates to an embedded part for rail transit segments, and its design purpose is to prevent the embedded sleeve from rotating in the precast concrete member through radial limiting ribs, thereby improving the safety of lifting and installation connection. However, this structure only has a single installation method of internal threads. In the case of internal thread damage, it will affect the use, and it is necessary to re-drill the hole, which is time-consuming and laborious. When the sleeve is skewed, the original connection method cannot be used, resulting in construction difficulties, thus limiting its adaptability under different construction conditions. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an embedded sleeve with multiple connection methods, and solve the problems of inability to be used after thread damage or blockage and difficulty in adjusting the skew of the sleeve.

[0004] To solve the above technical problem, the embedded sleeve with multiple connection methods of the utility model includes a sleeve main body for being embedded in the segment. The sleeve main body includes a rod body and a sleeve head connected to the end of the sleeve. The first end of the rod body is provided with a threaded hole for screwing and connecting a bolt, and a blind hole axially penetrating through the threaded hole is further provided on the rod body. A remaining cavity is provided on the side wall near the end of the blind hole. The blind hole and the remaining cavity together form a cavity, and when the threaded hole is blocked or damaged, an expansion bolt or a chemical anchor bolt can be installed in the cavity to replace the connecting bolt.

[0005] The remaining cavity is divided into two upper and lower sections. The lower section is an expansion cavity adapted to the expansion bolt, and the upper section is a movable cavity for reserving its activity space.

[0006] The length range of the sleeve main body is 90 - 150 mm.

[0007] The cross-sectional shapes of the rod body and the sleeve head are both square, triangular, hexagonal, octagonal or circular.

[0008] An external hanging channel for fitting and installing with the sleeve main body is provided outside the segment.

[0009] The inner diameter of the blind hole is smaller than that of the threaded hole.

[0010] Advantages of the present utility model: By providing a cavity on the sleeve that can accommodate expansion bolts or chemical anchor bolts, when the thread is damaged or blocked and cannot be used, and it is difficult to adjust the skew of the sleeve, there is no need to adjust the sleeve. Through these fasteners, effective installation can be achieved. In addition, it supports various connection methods such as expansion bolts and chemical anchor bolts. Even if the threaded hole is damaged or blocked, construction operations can still be carried out quickly and efficiently, reducing the labor intensity of workers, greatly improving the construction operation efficiency, significantly enhancing the flexibility and environmental friendliness of construction. Additionally, different shapes of the rod body and the sleeve head can be designed to adapt to different installation requirements and structural environments, thereby ensuring the stability and reliability of the sleeve and the connecting components. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional structure diagram of the embedded sleeve with multiple connection methods of the present utility model;

[0012] Figure 2 It is a schematic diagram of the first use state of the embedded sleeve with multiple connection methods of the present utility model;

[0013] Figure 3 It is a schematic diagram of the second use state of the embedded sleeve with multiple connection methods of the present utility model;

[0014] Figure 4 It is a schematic diagram of the embedded sleeve with multiple connection methods of the present utility model, where the cross-sectional shapes of both the rod body and the sleeve head are square;

[0015] Figure 5 It is a schematic diagram of the embedded sleeve with multiple connection methods of the present utility model, where the cross-sectional shapes of both the rod body and the sleeve head are triangular;

[0016] Figure 6 It is a schematic diagram of the embedded sleeve with multiple connection methods of the present utility model, where the cross-sectional shapes of both the rod body and the sleeve head are hexagonal;

[0017] Figure 7 It is a schematic diagram of the embedded sleeve with multiple connection methods of the present utility model, where the cross-sectional shapes of both the rod body and the sleeve head are octagonal;

[0018] Figure 8 It is a schematic diagram of the embedded sleeve with multiple connection methods of the present utility model, where the cross-sectional shapes of both the rod body and the sleeve head are circular. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further elaborates in detail on the embedded sleeve with multiple connection methods of the present utility model in conjunction with the drawings and specific embodiments. Embodiment

[0020] As Figure 1 shown, the embedded sleeve with multiple connection methods in this embodiment includes a sleeve body 1 for being embedded in the segment 6. There is an external hanging channel 5 fixedly installed with the sleeve body 1 outside the segment 6. From Figure 1 it can be seen that the said sleeve body 1 includes a rod body 9 and a sleeve head 8 connected to the end of the sleeve body 1. A threaded hole 3 for screwing a connecting bolt is provided at the head end of the rod body 9 (in this embodiment, Figure 1 the upper side shown is defined as the end, Figure 1 the lower side shown is defined as the end). A blind hole is also provided on the rod body 9. The blind hole is formed by extending along the central axis direction from the bottom of the threaded hole 3, so as to axially penetrate the threaded hole 3. A remaining cavity 4 is provided on the side wall near the end of the blind hole. The remaining cavity 4 is divided into an expansion cavity 10 and a movable cavity 11. The cross-sectional shape of the expansion cavity 10 can be adapted to the shape of the expansion bolt after expansion, while the movable cavity 11 provides a certain amount of movement space for the placement process of the expansion bolt. The blind hole and the remaining cavity 4 together form a cavity 2. Thus, when the threaded hole 3 is blocked or damaged, an expansion bolt or a chemical anchor bolt can be installed in the cavity 2 to replace the connecting bolt.

[0021] Furthermore, in order to meet the usage requirements of the expansion bolt or the chemical anchor bolt, the length of the embedded sleeve is designed to be 90 - 150 mm. In addition, in order to ensure that the sleeve body 1 has sufficient connection strength, corresponding reinforcing ribs can also be designed as in the utility model patent of the rail transit segment embedded parts mentioned in the background technology.

[0022] Still further, for the cross-sectional shapes of the rod body 9 and the sleeve head 8, the shapes shown in Figures 4 - 8 can be adopted. From Figure 4 it can be seen that the cross-sectional shapes of both the rod body 9 and the sleeve head 8 are square. From Figure 5 it can be seen that the cross-sectional shapes of both the rod body 9 and the sleeve head 8 are triangular. From Figure 6 it can be seen that the cross-sectional shapes of both the rod body 9 and the sleeve head 8 are hexagonal. From Figure 7 it can be seen that the cross-sectional shapes of both the rod body 9 and the sleeve head 8 are octagonal. From Figure 8 it can be seen that the cross-sectional shapes of both the rod body 9 and the sleeve head 8 are circular. In specific applications, various options can be provided by changing the shapes of the rod body 9 and the sleeve head 8 to adapt to different installation requirements and structural environments, so as to ensure the stability and reliability of the sleeve and the connecting components. In addition, different cross-sectional shapes can also optimize the force distribution and enhance the bearing capacity of the sleeve in a complex stress environment.

[0023] Its usage method is as follows:

[0024] When the sleeve body is intact, i.e., in the normal use state as Figure 2 shown. At this time, the sleeve body is embedded in the segment, and the external hanging channel 5 can be fixedly installed on the segment by screwing a connecting bolt into the threaded hole 3. For aesthetics and convenience of construction, an Allen bolt can be used as the connecting bolt.

[0025] When the threaded hole 3 is damaged, blocked or the sleeve body is tilted, there is no need to adopt the threaded connection method at this time, and the following two methods can be adopted: (1) Adopt the expansion bolt connection method shown in Figure 3 shown. It can be seen from Figure 3 that the sleeve body is also embedded in the segment. At this time, the expansion bolt can be extended into the cavity through the threaded hole so that the expansion end of the expansion bolt is in the remaining cavity 4. Since the remaining cavity 4 has two sections and provides a space for the expansion end to move, therefore, the pre-setting of the expansion bolt can be quickly realized. After pre-setting, the expansion end of the expansion bolt is operated to expand until the expansion cavity where the expansion end fills the movable cavity 11, thereby realizing the reliable fixation of the expansion bolt by using the designed expansion cavity; (2) The installation method of chemical bolts can also be adopted (not shown in the figure). At this time, the whole operation process is simpler, as long as the chemical bolt is placed in the cavity. At this time, the reserved cavity can adopt the reserved cavity structure of the expansion bolt or other structures. This embodiment does not limit it. By such a method, the problems of bolt blockage and damage affecting the use can also be solved.

[0026] Of course, the remaining cavity 4 mentioned in the present invention can also adopt other structural designs, such as the multi-stage expansion cavity design commonly seen in the market. Similarly, the cross-sectional shapes of the rod body 9 and the sleeve head 8 are not limited to square, triangular, hexagonal, octagonal or circular, and other applicable geometric shapes can also be adopted, such as oval or irregular polygon. The above structural changes are all within the protection scope of the present invention.

Claims

1. An embedded sleeve with multiple connection methods, comprising a sleeve body (1) for being embedded in a segment (6), characterized in that: The sleeve body (1) includes a rod body (9) and a sleeve head (8) connected to the end of the sleeve body (1). A threaded hole (3) for screwing and connecting a bolt is provided at the first end of the rod body (9). A blind hole axially penetrating the threaded hole (3) is further provided on the rod body (9). A remaining cavity (4) is provided on the side wall near the end of the blind hole. The blind hole and the remaining cavity (4) together form a cavity (2). When the threaded hole (3) is blocked or damaged, an expansion bolt or a chemical anchor bolt can be installed in the cavity (2) to replace the connecting bolt.

2. The embedded sleeve with multiple connection methods according to claim 1, characterized in that: The remaining cavity (4) is divided into two upper and lower sections. The lower section is an expansion cavity (10) adapted to the expansion bolt, and the upper section is a movable cavity (11) for reserving its movement space.

3. The embedded sleeve with multiple connection methods according to claim 1, characterized in that: The length range of the sleeve body (1) is 90 - 150 mm.

4. The embedded sleeve with multiple connection methods according to claim 1, characterized in that: The cross-sectional shapes of the rod body (9) and the sleeve head (8) are all square, triangular, hexagonal, octagonal or circular.

5. The embedded sleeve with multiple connection methods according to claim 1, characterized in that: An external hanging channel (5) for cooperating with the sleeve body (1) is provided outside the segment (6).

6. The embedded sleeve with multiple connection methods according to claim 1, characterized in that: The inner diameter of the blind hole is smaller than the inner diameter of the threaded hole (3).

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