A kind of expansion joint device suitable for large amount of expansion and contraction deformation of hydraulic pressure steel pipe

Abstract

The utility model discloses a kind of expansion joint devices suitable for water conservancy pressure steel pipe relatively amount telescopic deformation, it is related to expansion joint device technical field, comprising: gland, set on the sealing strip;Telescopic cylinder, set in the main body, with main body sliding connection, and with the gland sliding connection;Fixed block, have multiple, and multiple fixed blocks symmetrically set on the telescopic cylinder, with telescopic cylinder fixed connection;By setting fixed mechanism and fixed block, the connection between telescopic cylinder and main body is more closely realized fixed, avoid telescopic cylinder when suffering greater pressure, cause the connection between telescopic cylinder and main body to produce slack, influence the transmission safety of object;By setting elastic mechanism, the connection of gland and main body is more closely realized, and the buffering of gland to a certain extent is carried out, avoid gland and produce greater extrusion damage to sealing strip.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint device technology, and in particular to an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes. Background Technology

[0002] Hydraulic pressure steel pipes are key load-bearing components in water conservancy projects, hydropower facilities, and water conveyance systems. They are widely used in dams, pumping stations, and pipeline transportation, responsible for transporting water or other fluid media under high pressure. Due to factors such as temperature changes, foundation settlement, and hydraulic impact, steel pipes often undergo axial expansion and contraction deformation. Without an effective compensation mechanism, stress concentration at joints, sealing failure, and even structural damage can easily occur, directly affecting project safety and operational efficiency. As a core component for compensating for deformation, the performance of expansion joint devices directly determines the reliability and service life of pressure steel pipes, making it a key area for technological innovation in the hydraulic engineering field.

[0003] Under high pressure or frequent expansion and contraction conditions, the sliding connection between the expansion cylinder and the main body of the existing expansion joint device is prone to loosening. This is because the traditional fixing method relies on simple bolts or welding and lacks a dynamic locking mechanism. When the system pressure increases suddenly, the connection is prone to micro-displacement, which leads to sealing failure and media leakage, seriously threatening the safety of transportation and environmental protection. Therefore, it is necessary to improve this. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, and to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes includes a main body and a sealing strip, wherein the sealing strip is disposed at one end of the main body; and further includes:

[0007] A pressure cap is provided on the sealing strip;

[0008] A telescopic cylinder is disposed inside the main body, slidably connected to the main body, and slidably connected to the pressure cap;

[0009] A fixing mechanism is provided on the telescopic cylinder to further fix the telescopic cylinder and prevent slippage between the telescopic cylinder and the main body;

[0010] The device has multiple fixing blocks, which are symmetrically arranged on the telescopic cylinder and fixedly connected to it.

[0011] An elastic mechanism is provided on the pressure cap to ensure a tighter connection between the pressure cap and the main body, preventing the connection between the pressure cap and the main body from becoming loose and causing the sealing strip to not seal tightly.

[0012] Preferably, the fixing mechanism includes:

[0013] A support block is disposed on the fixed block and is fixedly connected to the fixed block;

[0014] A fixed shaft is mounted on the support block and is rotatably connected to the support block;

[0015] A fixed disk is disposed on the fixed shaft and fixedly connected to the fixed shaft;

[0016] A sliding component is disposed on the support block.

[0017] Preferably, the sliding component includes:

[0018] A sliding groove is formed on the support block;

[0019] A sliding block is disposed in the sliding groove, slidably connected to the sliding groove, and threadedly connected to the fixed shaft;

[0020] A sliding plate is disposed on the sliding block and is fixedly connected to the sliding block.

[0021] Preferably, the elastic mechanism includes:

[0022] A spring shaft is disposed on the pressure cap and is rotatably connected to the pressure cap;

[0023] An elastic block is disposed on the elastic shaft and fixedly connected to the elastic shaft;

[0024] The elastic ring is fixedly connected to the pressure cap;

[0025] A rotating component is mounted on the elastic shaft.

[0026] Preferably, the rotating component includes:

[0027] The rotating screw is mounted on the elastic shaft and fixedly connected to the elastic shaft;

[0028] There are two rotating rods, which are symmetrically arranged on the elastic ring and fixedly connected to the elastic ring.

[0029] A rotating sleeve is threadedly connected to the rotating screw and slidably connected to the rotating rod;

[0030] The transmission component is mounted on the rotating sleeve.

[0031] Preferably, the transmission component includes:

[0032] The first transmission disc is disposed on the rotating sleeve and is fixedly connected to the rotating sleeve;

[0033] The second transmission disc is detachably and fixedly connected to the main body;

[0034] The transmission spring has one end fixedly connected to the first transmission disc and the other end fixedly connected to the second transmission disc.

[0035] Preferably, the elastic shaft is rotatably connected to the elastic ring.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0037] By setting up a fixing mechanism and fixing blocks, the connection between the telescopic cylinder and the main body is made tighter, preventing the connection between the telescopic cylinder and the main body from loosening when the telescopic cylinder is subjected to large pressure, which would affect the safety of object transmission. By setting up an elastic mechanism, the connection between the pressure cap and the main body is made tighter, and the pressure cap is buffered to a certain extent to prevent the pressure cap from causing large compression damage to the sealing strip. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A three-dimensional structural schematic diagram of an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes is shown.

[0040] Figure 2 A three-dimensional cross-sectional schematic diagram of an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes is shown.

[0041] Figure 3 An exploded perspective view of an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes is shown.

[0042] Figure 4 An exploded view of the fixing mechanism of an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes is shown.

[0043] Figure 5 An exploded view of the elastic mechanism of an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes is shown.

[0044] Legend:

[0045] 1. Main body; 2. Sealing strip; 3. Pressure cap; 4. Telescopic cylinder; 5. Fixing block; 6. Support block; 7. Fixing shaft; 8. Fixing disc; 9. Sliding groove; 10. Sliding block; 11. Sliding plate; 12. Elastic shaft; 13. Elastic block; 14. Elastic ring; 15. Rotating screw; 16. Rotating rod; 17. Rotating sleeve; 18. First transmission disc; 19. Second transmission disc; 20. Transmission spring. Detailed Implementation

[0046] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0047] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] Reference Figures 1 to 5 The present invention provides a further description of an embodiment of an expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes.

[0051] An expansion joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes includes a main body 1 and a sealing strip 2, with the sealing strip 2 disposed at one end of the main body 1; it also includes: a pressure cap 3 disposed on the sealing strip 2; an expansion cylinder 4 disposed inside the main body 1, slidably connected to the main body 1 and slidably connected to the pressure cap 3; a fixing mechanism disposed on the expansion cylinder 4 for further fixing the expansion cylinder 4 to prevent slippage between the expansion cylinder 4 and the main body 1; multiple fixing blocks 5 symmetrically disposed on the expansion cylinder 4 and fixedly connected to the expansion cylinder 4; and an elastic mechanism disposed on the pressure cap 3 for tighter connection between the pressure cap 3 and the main body 1 to prevent loosening of the connection between the pressure cap 3 and the main body 1, which would result in a loose seal of the sealing strip 2.

[0052] Reference Figure 4 In a preferred embodiment, the fixing mechanism includes: a support block 6, which is disposed on the fixing block 5 and fixedly connected to the fixing block 5; a fixing shaft 7, which is disposed on the support block 6 and rotatably connected to the support block 6; a fixing disc 8, which is disposed on the fixing shaft 7 and fixedly connected to the fixing shaft 7; and a sliding component, which is disposed on the support block 6.

[0053] During operation, rotating the fixed disk 8 causes the fixed shaft 7, which is fixedly connected to the fixed disk 8, to rotate on the support block 6.

[0054] Reference Figure 4 In a preferred embodiment, the sliding component includes: a sliding groove 9, which is formed on the support block 6; a sliding block 10, which is disposed in the sliding groove 9, slidably connected to the sliding groove 9, and threadedly connected to the fixed shaft 7; and a sliding plate 11, which is disposed on the sliding block 10 and fixedly connected to the sliding block 10.

[0055] During operation, the sliding block 10, which is threadedly connected to the fixed shaft 7, rotates, causing the sliding block 10 to slide within the sliding groove 9, so that the sliding plate 11, which is fixedly connected to the sliding block 10, moves closer to the main body 1 until the sliding plate 11 contacts one end of the main body 1.

[0056] Reference Figure 5 In a preferred embodiment, the elastic mechanism includes: an elastic shaft 12, which is disposed on the pressure cover 3 and rotatably connected to the pressure cover 3; an elastic block 13, which is disposed on the elastic shaft 12 and fixedly connected to the elastic shaft 12; an elastic ring 14, which is fixedly connected to the pressure cover 3 and is used to limit the elastic shaft 12; and a rotating component, which is disposed on the elastic shaft 12.

[0057] During operation, rotating the elastic block 13 causes the elastic shaft 12, which is fixedly connected to the elastic block 13, to rotate on the pressure cover 3.

[0058] Reference Figure 5In a preferred embodiment, the rotating component includes: a rotating screw 15, which is mounted on the elastic shaft 12 and fixedly connected to the elastic shaft 12; two rotating rods 16, which are symmetrically arranged on the elastic ring 14 and fixedly connected to the elastic ring 14; a rotating sleeve 17, which is threadedly connected to the rotating screw 15 and slidably connected to the rotating rods 16; and a transmission component, which is mounted on the rotating sleeve 17.

[0059] During operation, the rotating screw 15, which is fixedly connected to the elastic shaft 12, rotates, causing the rotating sleeve 17, which is threadedly connected to the rotating screw 15, to rotate, so that the rotating sleeve 17 slides on the rotating rod 16.

[0060] Reference Figure 5 In a preferred embodiment, the transmission component includes: a first transmission disc 18, which is disposed on the rotating sleeve 17 and fixedly connected to the rotating sleeve 17; a second transmission disc 19, which is detachably fixedly connected to the main body 1; a transmission spring 20, one end of which is fixedly connected to the first transmission disc 18 and the other end of which is fixedly connected to the second transmission disc 19; and a spring shaft 12 rotatably connected to a spring ring 14.

[0061] During operation, the first transmission disc 18, which is fixedly connected to the rotating sleeve 17, moves closer to the second transmission disc 19, thereby compressing the transmission spring 20 and generating elastic potential energy.

[0062] Working principle: In use, first place the sealing strip 2 at the edge of the main body 1, then press the sealing strip 2 with the pressure cap 3, and fix the pressure cap 3 and the main body 1 with the screw and nut. Then install and fix the second transmission plate 19 to the main body 1. Then rotate the elastic block 13, which drives the elastic shaft 12 fixedly connected to the elastic block 13 to rotate on the pressure cap 3, so that the rotating screw 15 fixedly connected to the elastic shaft 12 rotates, which drives the rotating sleeve 17 threadedly connected to the rotating screw 15 to rotate, so that the rotating sleeve 17 slides on the rotating rod 16, thereby driving the first transmission plate 18 fixedly connected to the rotating sleeve 17 to move closer to the second transmission plate 19, thereby compressing the transmission spring 20 and generating elastic potential energy, thereby strengthening the connection between the pressure cap 3 and the main body 1, and allowing the pressure cap 3 to be buffered to a certain extent when subjected to greater pressure, so as to avoid damage to the pressure cap 3 and the sealing strip 2.

[0063] Next, the telescopic cylinder 4 is placed inside the main body 1, allowing it to slide within the main body 1. Once the length of the telescopic cylinder 4 is determined, the telescopic cylinder 4 and the main body 1 are connected and fixed using screws and nuts. Then, the fixed plate 8 is rotated, causing the fixed shaft 7, which is fixedly connected to the fixed plate 8, to rotate on the support block 6. This causes the sliding block 10, which is threadedly connected to the fixed shaft 7, to rotate, sliding within the sliding groove 9. This causes the sliding plate 11, which is fixedly connected to the sliding block 10, to move closer to the main body 1 until the sliding plate 11 contacts one end of the main body 1. This achieves a more stable connection between the telescopic cylinder 4 and the main body 1, preventing the support cylinder from sliding.

[0064] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescoping joint device suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, comprising a main body (1) and a sealing strip (2), wherein the sealing strip (2) is disposed at one end of the main body (1); characterized in that, Also includes: A pressure cap (3) is disposed on the sealing strip (2); Telescopic cylinder (4) is disposed inside the main body (1), slidably connected to the main body (1), and slidably connected to the pressure cap (3); A fixing mechanism is provided on the telescopic cylinder (4) to further fix the telescopic cylinder (4) and prevent the connection between the telescopic cylinder (4) and the main body (1) from sliding. There are multiple fixing blocks (5), and the multiple fixing blocks (5) are symmetrically arranged on the telescopic cylinder (4) and fixedly connected to the telescopic cylinder (4); The elastic mechanism is provided on the cover (3) to make the connection between the cover (3) and the body (1) tighter, so as to avoid the connection between the cover (3) and the body (1) becoming loose, resulting in the sealing strip (2) not sealing tightly.

2. The expansion joint device according to claim 1, suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, is characterized in that, The fixing mechanism includes: A support block (6) is disposed on the fixing block (5) and is fixedly connected to the fixing block (5); A fixed shaft (7) is mounted on the support block (6) and is rotatably connected to the support block (6); A fixed disk (8) is disposed on the fixed shaft (7) and fixedly connected to the fixed shaft (7); A sliding component is disposed on the support block (6).

3. The expansion joint device according to claim 2, suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, is characterized in that, The sliding component includes: A sliding groove (9) is formed on the support block (6); A sliding block (10) is disposed in the sliding groove (9), is slidably connected to the sliding groove (9), and is threadedly connected to the fixed shaft (7); A sliding plate (11) is disposed on the sliding block (10) and is fixedly connected to the sliding block (10).

4. The expansion joint device according to claim 3, suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, characterized in that, The elastic mechanism includes: The elastic shaft (12) is disposed on the pressure cover (3) and is rotatably connected to the pressure cover (3); The elastic block (13) is disposed on the elastic shaft (12) and fixedly connected to the elastic shaft (12); The elastic ring (14) is fixedly connected to the pressure cap (3); A rotating component is mounted on the elastic shaft (12).

5. The expansion joint device according to claim 4, suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, characterized in that, The rotating component includes: Rotate the screw (15), which is mounted on the elastic shaft (12) and fixedly connected to the elastic shaft (12); Two rotating rods (16) are provided, and the two rotating rods (16) are symmetrically arranged on the elastic ring (14) and fixedly connected to the elastic ring (14); The rotating sleeve (17) is threadedly connected to the rotating screw (15) and slidably connected to the rotating rod (16); The transmission component is mounted on the rotating sleeve (17).

6. The expansion joint device according to claim 5, suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, is characterized in that, The transmission component includes: The first transmission disc (18) is disposed on the rotating sleeve (17) and is fixedly connected to the rotating sleeve (17); The second transmission disc (19) is detachably and fixedly connected to the main body (1); The transmission spring (20) is fixedly connected at one end to the first transmission disc (18) and at the other end to the second transmission disc (19).

7. The expansion joint device according to claim 6, suitable for large-scale expansion and contraction deformation of hydraulic pressure steel pipes, characterized in that, The elastic shaft (12) is rotatably connected to the elastic ring (14).

Images