Rail transit elbow joint

Abstract

The utility model discloses a rail transit elbow joint which comprises a connecting piece, a fixed pipe and a movable pipe, the fixed pipe is fixedly installed on the surface of one side of the connecting piece, an upper limiting block is movably installed on the upper surface of the connecting piece, and a lower limiting block is movably installed on the lower surface of the connecting piece. A movable pipe is movably installed between the upper limiting block and the lower limiting block and located at the edge position, and positioning blocks are movably installed on the surface of one side and the front surface of the upper limiting block. According to the rail transit elbow joint, when a line needs to penetrate through the elbow joint, the movable pipe is rotated to enable the movable pipe and the fixed pipe to form a straight line, at the moment, the line can conveniently penetrate through the fixed pipe, the connecting piece and the movable pipe, then the movable pipe is rotated, and the movable pipe is rotated to enable the line to penetrate through the elbow joint. The angle between the movable pipe and the fixed pipe is adjusted to 90 degrees, and finally, a line in the elbow joint penetrates into a pipeline to be butted.

Description

Technical Field

[0001] The utility model relates to the field of elbow joints, and particularly relates to an elbow joint for rail transit. Background Art

[0002] During the construction of urban rail transit, some lines will pass through pipelines, which can protect the lines.

[0003] Sometimes the laying path of the line is curved, while the pipelines are all straight. In order to connect two pipelines at both ends of the curved path, elbow joints are used to connect the two straight pipelines at the curved part. However, since the elbow joint is curved, it is not convenient for the line to pass through the elbow joint. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an elbow joint for rail transit, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An elbow joint for rail transit includes a connecting piece, a fixed pipe and a movable pipe. A fixed pipe is fixedly installed on one side surface of the connecting piece. An upper limit block is movably installed on the upper surface of the connecting piece, and a lower limit block is movably installed on the lower surface of the connecting piece. A movable pipe is movably installed between the upper limit block and the lower limit block and at the edge position. Positioning blocks are movably installed on one side surface and the front surface of the upper limit block.

[0007] Preferably, a through hole is opened inside the connecting piece, and lifting grooves are opened on one side surface and the front surface of the upper limit block.

[0008] Preferably, annular grooves are opened on the upper surface of the lower limit block and the lower surface of the upper limit block and close to the edge position.

[0009] Preferably, an arc-shaped baffle is fixedly installed on one side surface at the rear end of the movable pipe. Arc-shaped blocks are fixedly installed on the upper surface and the lower surface of the arc-shaped baffle. A positioning groove is opened on the upper surface at the rear end of the movable pipe.

[0010] Preferably, a plug post is fixedly installed on the lower surface at the front end of the positioning block, and a lifting block is fixedly installed on the rear surface of the positioning block. The lifting block is embedded in the lifting groove, and the positioning block is movably connected to the upper limit block through the lifting block.

[0011] Preferably, the plug post is embedded in the positioning groove, the arc-shaped block is embedded in the annular groove, and the movable pipe is movably installed between the upper limit block and the lower limit block through the arc-shaped block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by means of the mutual cooperation of a connecting piece, an upper limit block, a lower limit block, a fixed pipe, a movable pipe and a positioning block, when it is necessary to pass a line through the elbow joint, the movable pipe is rotated so that the movable pipe and the fixed pipe form a straight line. At this time, the line can be conveniently passed through the fixed pipe, the connecting piece and the movable pipe, and then the movable pipe is rotated so that the angle between the movable pipe and the fixed pipe is adjusted to 90 degrees. Then the positioning block is moved so that the insertion post of the positioning block is embedded in the positioning groove of the movable pipe, so that the movable pipe can be positioned. At this time, the arc-shaped baffle of the movable pipe blocks the exposed through-hole part of the connecting piece, and then the line in the elbow joint can be inserted into the pipeline to be butted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structure diagram of an elbow joint for rail transit of the utility model;

[0015] Figure 2 is the partial disassembly schematic diagram of an elbow joint for rail transit of the utility model;

[0016] Figure 3 is the structure diagram of the movable pipe of an elbow joint for rail transit of the utility model;

[0017] Figure 4 is the structure diagram of the positioning block of an elbow joint for rail transit of the utility model.

[0018] In the figure: 1, connecting piece; 101, through-hole; 102, rotating ring; 2, upper limit block; 201, lifting groove; 3, lower limit block; 301, rotating groove; 302, annular groove; 4, fixed pipe; 5, movable pipe; 501, positioning groove; 502, arc-shaped baffle; 503, arc-shaped block; 6, positioning block; 601, insertion post; 602, lifting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the technical means, creative features, achieving purposes and effects of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0020] As Figures 1-4 shown, an elbow joint for rail transit includes a connecting piece 1, a fixed pipe 4 and a movable pipe 5. A fixed pipe 4 is fixedly installed on one side surface of the connecting piece 1, an upper limit block 2 is movably installed on the upper surface of the connecting piece 1, a lower limit block 3 is movably installed on the lower surface of the connecting piece 1, a movable pipe 5 is movably installed between the upper limit block 2 and the lower limit block 3 and at the edge position, and positioning blocks 6 are movably installed on one side surface and the front surface of the upper limit block 2.

[0021] The interior of the connecting member 1 is provided with a through port 101. The one side surface and the front surface of the upper limit block 2 are provided with a lifting groove 201. The fixed pipe 4 and the movable pipe 5 are communicated with each other through the through port 101. The upper surface of the lower limit block 3 and the lower surface of the upper limit block 2 and near the edge positions are both provided with an annular groove 301. The cooperation of the annular groove 301 and the arc-shaped block 503 can assist the movable pipe 5 to rotate flexibly. One side surface of the rear end of the movable pipe 5 is fixedly installed with an arc-shaped baffle 502. The upper surface and the lower surface of the arc-shaped baffle 502 are fixedly installed with arc-shaped blocks 503. The upper surface of the rear end of the movable pipe 5 is provided with a positioning groove 501. The cooperation of the positioning groove 501 and the insertion post 601 can position the angle of the movable pipe 5. The front lower surface of the positioning block 6 is fixedly installed with an insertion post 601. The rear surface of the positioning block 6 is fixedly installed with a lifting block 602. The lifting block 602 is embedded in the lifting groove 201. The positioning block 6 is movably connected with the upper limit block 2 through the lifting block 602. There is a certain frictional force between the lifting block 602 and the lifting groove 201. The insertion post 601 is embedded in the positioning groove 501. The arc-shaped block 503 is embedded in the annular groove 301. The movable pipe 5 is movably installed between the upper limit block 2 and the lower limit block 3 through the arc-shaped block 503.

[0022] It should be noted that the present utility model is a bend pipe joint for rail transit. When in use, when it is necessary to pass a line through the bend pipe joint, rotate the movable pipe 5 so that the movable pipe 5 and the fixed pipe 4 form a straight line. At this time, the line can be conveniently passed through the fixed pipe 4, the connecting member 1 and the movable pipe 5. Then rotate the movable pipe 5 so that the angle between the movable pipe 5 and the fixed pipe 4 is adjusted to 90 degrees. Then move the positioning block 6 so that the insertion post 601 of the positioning block 6 is embedded in the positioning groove 501 of the movable pipe 5. In this way, the movable pipe 5 can be positioned. At this time, the arc-shaped baffle 502 of the movable pipe 5 blocks the exposed through port 101 part of the connecting member 1. At this time, the line in the bend pipe joint can be inserted into the pipeline to be butted.

[0023] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rail transit elbow joint, characterized in that: The invention comprises a connecting piece (1), a fixed tube (4) and a movable tube (5); the fixed tube (4) is fixedly mounted on one side surface of the connecting piece (1); an upper limit block (2) is movably mounted on the upper surface of the connecting piece (1); a lower limit block (3) is movably mounted on the lower surface of the connecting piece (1); a movable tube (5) is movably mounted between the upper limit block (2) and the lower limit block (3) and at an edge position; and positioning blocks (6) are movably mounted on one side surface and the front surface of the upper limit block (2).

2. A rail transit elbow joint according to claim 1, characterized in that: A through opening (101) is provided inside the connecting piece (1), and a lifting groove (201) is provided on a side surface and a front surface of the upper limit block (2).

3. A rail transit elbow joint according to claim 2, characterized in that: An annular groove (301) is provided on the upper surface of the lower limit block (3) and the lower surface of the upper limit block (2) near the edge.

4. A rail transit elbow joint according to claim 3, characterized in that: An arc-shaped baffle (502) is fixedly mounted on one side surface of the rear end of the movable tube (5), arc-shaped blocks (503) are fixedly mounted on the upper and lower surfaces of the arc-shaped baffle (502), and a positioning groove (501) is provided on the upper surface of the rear end of the movable tube (5).

5. A rail transit elbow joint according to claim 4, characterized in that: A plug post (601) is fixedly mounted on the lower front surface of the positioning block (6), a lifting block (602) is fixedly mounted on the rear surface of the positioning block (6), the lifting block (602) is embedded in the lifting slot (201), and the positioning block (6) is movably connected to the upper limit block (2) via the lifting block (602).

6. A rail transit elbow joint according to claim 5, characterized in that: The plug post (601) is embedded in the positioning groove (501), the arc block (503) is embedded in the annular groove (301), and the movable tube (5) is movably installed between the upper limit block (2) and the lower limit block (3) through the arc block (503).

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