Prestressed steel cylinder concrete pipe

Abstract

The utility model provides a prestress steel cylinder concrete pipe which comprises a pipe body, a steel lining is fixedly connected to the outer side of an opening in the right end of the pipe body in a sleeved mode, the outer side of the steel lining is connected with an inner thread sleeve through threads, four sealing strips are connected into the steel lining in a sliding mode, and the sealing strips make contact with the pipe body. The steel bushing is arranged at the end of the pipe body, the sealing strips which are stretched out and drawn back by the springs and are provided with the sliding pins are arranged in the steel bushing, the springs, the sliding pins and the sealing strips are combined into four groups, and in addition, the inner thread bushing which is in threaded connection with the steel bushing is arranged on the outer side of the steel bushing. Through transverse movement generated by thread movement between the internal thread sleeve and the steel lining, the sliding pin can be stressed to retract inwards, and then pressure acts on the sealing strip, so that after two pipe bodies are in butt joint, the sealing strip can be used for sealing the joint between the pipe bodies, and the possibility of leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the field of steel cylinder concrete pipes, and specifically relates to a prestressed steel cylinder concrete pipe. Background Technique

[0002] A prestressed steel cylinder concrete pipe is a concrete pipe that adopts prestress technology during the construction process. It consists of a steel cylinder and concrete. The steel cylinder is used to bear external loads and internal pressures, and the concrete is used to protect the steel cylinder and provide strength and durability.

[0003] In the invention application patent with the application publication number CN113483171A, it discloses a new type of prestressed steel cylinder concrete pipe, which includes a first steel ring, a second steel ring, a pipe body and a rubber ring; the first steel ring and the second steel ring are respectively arranged at both ends of the pipe body; the first steel ring includes a first wide ring section and a first narrow ring section that are connected to each other, and the first wide ring section is connected to the end of the pipe body; the second steel ring includes a second wide ring section and a second narrow ring section that are connected to each other, and the second wide ring section is connected to the end of the pipe body.

[0004] However, when the existing prestressed steel cylinder concrete pipes are butt-jointed, they are only sealed by the steel bushings at the ends of the pipe bodies, with insufficient sealing performance and easy leakage. Therefore, it needs to be improved. Content of the Utility Model

[0005] The purpose of the utility model is to provide a prestressed steel cylinder concrete pipe to solve the problem that when the existing prestressed steel cylinder concrete pipes are butt-jointed, they are only sealed by the steel bushings at the ends of the pipe bodies, with insufficient sealing performance and easy leakage.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prestressed steel cylinder concrete pipe includes a pipe body. A steel bushing is fixedly sleeved on the outer side of the right end opening of the pipe body. An internal thread sleeve is connected to the outer side of the steel bushing by threads. Four sealing strips are slidably connected inside the steel bushing. The sealing strips are in contact with the pipe body, and adjacent sealing strips are in contact with each other. A sliding pin is fixed on the sealing strip. The sliding pin penetrates through the steel bushing and is slidably connected to the steel bushing. The end of the sliding pin abuts against the internal thread sleeve. A first spring is sleeved on the outer side of the pin body of the sliding pin. A locking mechanism is arranged outside the steel bushing and on the left side of the internal thread sleeve.

[0008] Furthermore, one end of the first spring is fixedly connected to the sealing strip, and the other end of the first spring is fixedly connected to the inner surface of the steel bushing. Through the setting of the first spring, a reaction force can act on the sealing strip.

[0009] Further, the locking mechanism includes a hollow shell fixedly connected to the outer wall of the steel bushing. A locking pin is slidably connected inside the hollow shell. The locking pin is inserted into the internal thread sleeve. At the bottom of one end of the locking pin located inside the hollow shell, a guiding block is fixedly connected. A guiding rod is fixedly connected inside the hollow shell. The guiding rod passes through the guiding block and is slidably connected to the guiding block. A cushion block is fixedly connected to the end of the guiding rod. A second spring is sleeved on the outer side of the rod body of the guiding rod. Through the setting of the locking mechanism, the internal thread sleeve is locked.

[0010] Further, one end of the second spring is fixedly connected to the guiding block, and the other end of the second spring is fixedly connected to the cushion block. Through the setting of the second spring, the elastic force can act on the locking pin through the guiding block.

[0011] Further, balls are arranged at the bottom of the guiding block, and the balls are slidably connected to the inner surface of the hollow shell. Through the setting of the balls, the relative friction between the guiding block and the hollow shell can be reduced.

[0012] Further, a pressing rod is slidably connected inside the upper end of the hollow shell. One end of the pressing rod is slidably connected to the locking pin, and the other end of the pressing rod is fixedly connected to a button. A corrugated sleeve is fixedly connected between the button and the hollow shell. The button can press the pressing rod, and the pressing rod applies a downward thrust to the locking pin.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model sets a steel bushing at the end of the pipe body, and then sets a sealing strip with a sliding pin that can be telescoped by a spring inside the steel bushing, and there are four groups of combinations of the spring, the sliding pin and the sealing strip. In addition, an internal thread sleeve threadedly connected to the steel bushing is arranged outside the steel bushing. In this way, through the lateral movement generated by the threaded movement between the internal thread sleeve and the steel bushing, the sliding pin can be forced to contract inward, and then the pressure is applied to the sealing strip. After the two pipe bodies are butted, the sealing strip can be used to seal the connection between the pipe bodies and reduce the possibility of leakage.

[0015] 2. The present utility model sets a locking mechanism outside the steel bushing. The locking mechanism contains a locking pin elastically guided by components such as a spring, a guiding block and a guiding rod. The locking pin will be inserted laterally into the internal thread sleeve under the action of the spring, so that the internal thread sleeve can be locked and fixed, thereby preventing the loosening between the internal thread sleeve and the steel bushing and further ensuring the stability of the sealing performance between the pipe bodies. Description of the Drawings

[0016] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0017] Figure 1 is a schematic structural diagram of a prestressed concrete cylinder pipe of the present utility model;

[0018] Figure 2 is a schematic structural diagram of a sealing strip of the present utility model;

[0019] Figure 3 is a schematic sectional view of a prestressed concrete cylinder pipe of the present utility model;

[0020] Figure 4 is for the present utility model Figure 3 partial structural enlarged view;

[0021] Figure 5 is Figure 4 enlarged view of the structure of part A.

[0022] 1. Pipe body; 2. Steel lining sleeve; 3. Internal thread sleeve; 4. Sealing strip; 5. Slide pin; 6. First spring; 7. Locking mechanism; 71. Hollow shell; 72. Locking pin; 73. Guide block; 74. Guide rod; 75. Pad; 76. Ball; 77. Second spring; 78. Pressing rod; 79. Button; 710. Corrugated sleeve. Specific embodiments

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] As Figures 1-4 shown, a prestressed concrete cylinder pipe includes a pipe body 1. A steel bushing 2 is fixedly sleeved outside the right end opening of the pipe body 1. An internal thread sleeve 3 is connected to the outside of the steel bushing 2 by a thread. Four sealing strips 4 are slidably connected inside the steel bushing 2. The sealing strips 4 are in contact with the pipe body 1, and adjacent sealing strips 4 are in contact with each other. A sliding pin 5 is fixed on the sealing strip 4. The sliding pin 5 passes through the steel bushing 2 and is slidably connected to the steel bushing 2. The end of the sliding pin 5 abuts against the internal thread sleeve 3. A first spring 6 is sleeved outside the pin body of the sliding pin 5. One end of the first spring 6 is fixedly connected to the sealing strip 4, and the other end of the first spring 6 is fixedly connected to the inner surface of the steel bushing 2. Through the arrangement of the first spring 6, the reaction force can act on the sealing strip 4.

[0028] Please refer to Figures 4-5 , a locking mechanism 7 is arranged outside the steel bushing 2 and on the left side of the internal thread sleeve 3. Through the arrangement of the locking mechanism 7, the internal thread sleeve 3 can be locked. The locking mechanism 7 includes a hollow shell 71 fixedly connected to the outer wall of the steel bushing 2. A locking pin 72 is slidably connected inside the hollow shell 71. The locking pin 72 is inserted into the internal thread sleeve 3. A guide block 73 is fixedly connected to the bottom of the end of the locking pin 72 located inside the hollow shell 71. A guide rod 74 is fixedly connected inside the hollow shell 71. The guide rod 74 passes through the guide block 73 and is slidably connected to the guide block 73. A cushion block 75 is fixedly connected to the end of the guide rod 74. A second spring 77 is sleeved outside the rod body of the guide rod 74. One end of the second spring 77 is fixedly connected to the guide block 73, and the other end of the second spring 77 is fixedly connected to the cushion block 75. Through the arrangement of the second spring 77, the elastic force can act on the locking pin 72 through the guide block 73. A ball 76 is arranged at the bottom of the guide block 73, and the ball 76 is slidably connected to the inner surface of the hollow shell 71. Through the arrangement of the ball 76, the relative friction between the guide block 73 and the hollow shell 71 can be reduced.

[0029] Please refer to Figure 5, a pressure rod 78 is slidably connected inside the upper end of the hollow shell 71. One end of the pressure rod 78 is slidably connected to the locking pin 72, and the other end of the pressure rod 78 is fixedly connected to a button 79. A corrugated sleeve 710 is fixedly connected between the button 79 and the hollow shell 71. The pressure rod 78 can be pressed by the button 79, and the pressure rod 78 applies a downward thrust to the locking pin 72.

[0030] The specific implementation process of the present utility model is as follows: During use, first, the two pipe bodies 1 are butted, and the right pipe body 1 is inserted into the steel bushing 2 of the left pipe body 1. Subsequently, the pressure rod 78 is pushed by the button 79, and the pressure rod 78 applies a downward force to the locking pin 72. The locking pin 72 can move horizontally through the guiding of the guiding block 73 and the guiding rod 74 and the action of its internal inclined surface, and disengages from the internal thread sleeve 3, thereby releasing the restriction on the internal thread sleeve 3. Subsequently, the internal thread sleeve 3 is rotated. The internal thread sleeve 3 moves horizontally through the threaded movement between the steel bushings 2. Subsequently, the sliding pin 5 is retracted under force and applies pressure to the sealing strip 4. The sealing strip 4 seals the connection between the two pipe bodies 1 to reduce the possibility of leakage. Finally, the button 79 is released, and the locking pin 72 will reset under the action of the second spring 77 and horizontally insert into the internal thread sleeve 3 again, thereby preventing loosening between the internal thread sleeve 3 and the steel bushing 2 and further ensuring the stability of the sealing performance between the pipe bodies 1.

[0031] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A prestressed concrete cylinder pipe, characterized in that: It includes a pipe body (1). A steel bushing (2) is fixedly sleeved on the outer side of the right end opening of the pipe body (1). An internal thread sleeve (3) is connected to the outer side of the steel bushing (2) by threads. Four sealing strips (4) are slidably connected inside the steel bushing (2). The sealing strips (4) are in contact with the pipe body (1), and adjacent sealing strips (4) are in contact with each other. A sliding pin (5) is fixed on the sealing strip (4). The sliding pin (5) penetrates through the steel bushing (2) and is slidably connected to the steel bushing (2). The end of the sliding pin (5) abuts against the internal thread sleeve (3). A first spring (6) is sleeved on the outer side of the pin body of the sliding pin (5). A locking mechanism (7) is arranged on the outer part of the steel bushing (2) and on the left side of the internal thread sleeve (3).

2. A prestressed concrete cylinder pipe according to claim 1, characterized in that: One end of the first spring (6) is fixedly connected to the sealing strip (4), and the other end of the first spring (6) is fixedly connected to the inner surface of the steel bushing (2).

3. A prestressed concrete cylinder pipe according to claim 1, characterized in that: The locking mechanism (7) includes a hollow shell (71) fixedly connected to the outer wall of the steel bushing (2). A locking pin (72) is slidably connected inside the hollow shell (71). The locking pin (72) is inserted into the internal thread sleeve (3). A guide block (73) is fixedly connected to the bottom of the end of the locking pin (72) located inside the hollow shell (71). A guide rod (74) is fixedly connected inside the hollow shell (71). The guide rod (74) penetrates through the guide block (73) and is slidably connected to the guide block (73). A cushion block (75) is fixedly connected to the end of the guide rod (74). A second spring (77) is sleeved on the outer side of the rod body of the guide rod (74).

4. A prestressed concrete cylinder pipe according to claim 3, characterized in that: One end of the second spring (77) is fixedly connected to the guide block (73), and the other end of the second spring (77) is fixedly connected to the cushion block (75).

5. A prestressed concrete cylinder pipe according to claim 3, characterized in that: A ball (76) is arranged at the bottom of the guide block (73), and the ball (76) is slidably connected to the inner surface of the hollow shell (71).

6. A prestressed concrete cylinder pipe according to claim 3, characterized in that: A pressure rod (78) is slidably connected inside the upper end of the hollow shell (71). One end of the pressure rod (78) is slidably connected to the locking pin (72), and the other end of the pressure rod (78) is fixedly connected to a button (79). A corrugated sleeve (710) is fixedly connected between the button (79) and the hollow shell (71).

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