A force transmitter

Abstract

This utility model relates to the field of expansion joint technology, providing a force-transmitting expansion joint, including a sleeve, with an inner tube disposed on one side inside the sleeve. Self-locking fixing structures are fixed to the outer walls of both the sleeve and the inner tube. Each self-locking fixing structure includes adjusting blocks uniformly fixed to the outer wall of the inner tube, and positioning blocks uniformly fixed to the outer wall of the sleeve. By providing self-locking fixing structures, this utility model facilitates precise connection between the sleeve and the inner tube under the connection and guidance of the screw. The dual locking action of the first and second self-locking bolts increases the stability of the connection between the sleeve and the inner tube. The limiting action of the limiting bolts facilitates control of the expansion distance between the sleeve and the inner tube. This device achieves the functions of easy self-locking, easy fixing, and easy adjustment of the distance between the sleeve and the inner tube, improving the working efficiency and convenience of the force-transmitting expansion joint during use.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, and in particular to a force-transmitting expansion joint. Background Technology

[0002] In engineering structures, such as bridges, high-rise buildings, and water conservancy facilities, it is necessary to ensure the stability and safety of the structure under various external forces. However, during the installation and maintenance of the project, due to changes in site dimensions or the need for equipment displacement, it is inconvenient to flexibly connect the equipment and pipelines. Therefore, it is necessary to design a force transmission expansion joint. To address this, patent CN210566867U discloses a double-flange force-transmitting expansion joint with a limiting component, comprising a sleeve and an inner tube. The end of the inner tube is inserted into the sleeve, and an intermediate tube is inserted at the connection between the inner tube and the sleeve. An inner rubber sleeve is bonded to the inner side wall of the intermediate tube. This utility model adds a limiting block connection structure to the side wall of the double-flange force-transmitting expansion joint composed of the sleeve, inner tube, and intermediate tube. A locking block is installed at the end of the limiting block, and a groove is pre-made on the inner side of the locking block. A locking strip structure is pre-formed on the outer side wall of the inner tube and the intermediate tube to cooperate with the locking block. When the sleeve, inner tube, and intermediate tube are connected and installed, the sleeve and intermediate tube are rotated appropriately so that the position of the limiting block moves to the corresponding position of the locking strip. The locking block installed at the end of the limiting block contacts the locking strip. When the locking strip moves to the middle of the opening of the locking block end, there will be a noticeable locking feeling, which facilitates limiting the corresponding positions of the sleeve, inner tube, and intermediate tube. Although the double-flange force-transmitting expansion joint with limiting components mentioned above is convenient for limiting the parts of the expansion joint during use, the sleeve and inner tube are not easy to self-lock during installation and connection, and are prone to loosening. Therefore, it is necessary to design a force-transmitting expansion joint. Utility Model Content

[0003] The purpose of this utility model is to provide a force-transmitting expansion joint to solve the defects of existing force-transmitting expansion joints where the sleeve and inner tube are inconvenient to self-lock during installation and connection, and are prone to loosening.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a force-transmitting expansion joint, including a sleeve; An inner tube is provided on one side of the casing. Self-locking structures are fixed on the outer walls of both the casing and the inner tube. The self-locking structures include adjusting blocks uniformly fixed on the outer wall of the inner tube and positioning blocks uniformly fixed on the outer wall of the casing. A screw rod passes through the interior of both the adjusting block and the positioning block. A second self-locking bolt is uniformly threaded on the outer wall of the screw rod near the positioning block. A first self-locking bolt is uniformly threaded on the outer wall of the screw rod near the adjusting block. A limit bolt is threaded on the outer wall of the screw rod on the side of the adjusting block away from the first self-locking bolt.

[0005] Furthermore, a sealing structure is provided at one end of the inner wall of the sleeve and at one end of the outer wall of the inner tube.

[0006] Furthermore, the sealing structure includes a first sealing groove, a second sealing groove, a first sealing ring, and a second sealing ring. The first sealing groove is evenly opened on the outer wall of one end of the inner tube, and a second sealing ring is provided inside each of the first sealing grooves. The second sealing groove is evenly opened on the inner wall of one end of the sleeve, and a first sealing ring is provided inside each of the second sealing grooves.

[0007] Furthermore, the first sealing ring and the sleeve are connected by an interference fit through the second sealing groove, and the second sealing ring and the inner tube are connected by an interference fit through the first sealing groove.

[0008] Furthermore, both the first and second sealing rings are hollow inside.

[0009] Furthermore, the inner wall of the first sealing ring and the outer wall of the inner tube abut against each other, and the outer wall of the second sealing ring and the inner wall of the sleeve abut against each other.

[0010] Furthermore, the adjusting blocks are evenly distributed on the outer wall of the inner tube, and the positioning blocks are evenly distributed on the outer wall of the sleeve.

[0011] The force-transmitting expansion joint provided by this utility model has the following advantages: With its self-locking fixing structure, the sleeve and inner tube can be precisely connected under the connection and guidance of the screw. The double locking action of the first and second self-locking bolts increases the stability of the connection between the sleeve and the inner tube. The limiting action of the limiting bolt makes it easy to control the telescopic distance between the sleeve and the inner tube. This device has the functions of easy self-locking, easy fixing, and easy adjustment of the distance between the sleeve and the inner tube, thus improving the working efficiency and convenience of the force transmission expansion joint during use. By incorporating an inner tube, the inner wall of the first sealing ring and the outer wall of the inner tube abut against each other, facilitating a seal between one end of the sleeve and the inner tube. Similarly, the outer wall of the second sealing ring and the inner wall of the sleeve abut against each other, facilitating a seal between one end of the inner tube and the sleeve. This achieves the sealing function of the device and improves the sealing performance of the force transmission expansion joint during use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 4 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model; Figure 5 This is a top-view cross-sectional three-dimensional structural diagram of the present invention. Figure 6 This is a side view sectional structural diagram of the present invention.

[0013] The reference numerals in the figure are as follows: 1. Sleeve; 2. Inner tube; 3. Sealing structure; 31. First sealing groove; 32. Second sealing groove; 33. First sealing ring; 34. Second sealing ring; 4. Self-locking fixing structure; 41. Adjusting block; 42. Screw; 43. Limiting bolt; 44. First self-locking bolt; 45. Second self-locking bolt; 46. Positioning block. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-6 The present invention provides a force-transmitting expansion joint, comprising a sleeve 1.

[0016] Reference Figures 1-6 An inner tube 2 is provided on one side inside the sleeve 1. Self-locking fixing structures 4 are fixed on the outer walls of both the sleeve 1 and the inner tube 2. The self-locking fixing structure 4 includes adjusting blocks 41 uniformly fixed on the outer wall of the inner tube 2 and positioning blocks 46 uniformly fixed on the outer wall of the sleeve 1. A screw 42 passes through the interior of both the adjusting block 41 and the positioning block 46. A second self-locking bolt 45 is uniformly threaded on the outer wall of the screw 42 near the positioning block 46. A first self-locking bolt 44 is uniformly threaded on the outer wall of the screw 42 near the adjusting block 41. A limit bolt 43 is threaded on the outer wall of the screw 42 on the side of the adjusting block 41 away from the first self-locking bolt 44. The adjusting blocks 41 are evenly distributed on the outer wall of the inner tube 2, and the positioning blocks 46 are evenly distributed on the outer wall of the sleeve 1.

[0017] In use, the screw 42 is passed through the adjusting block 41 and the positioning block 46. Then, the telescopic gap between the sleeve 1 and the inner tube 2 is adjusted. After adjusting to a suitable gap, the limiting bolt 43 is rotated to fix the limiting bolt 43 to the outside of the screw 42, thus limiting the inner tube 2. Then, the first self-locking bolt 44 and the second self-locking bolt 45 are rotated to fix them. There are two sets of the first self-locking bolt 44 and the second self-locking bolt 45. When rotating to fix them, the two sets of the first self-locking bolt 44 are continuously rotated until they fit tightly together. The two sets of the second self-locking bolt 45 are also rotated until they fit tightly together. The first self-locking bolt 44 and the second self-locking bolt 45 on the outside can prevent the first self-locking bolt 44 and the second self-locking bolt 45 on the inside from being reversed or loosened during use, thus playing a self-locking role.

[0018] Reference Figures 3-6 A sealing structure 3 is provided at one end of the inner wall of the sleeve 1 and one end of the outer wall of the inner tube 2. The sealing structure 3 includes a first sealing groove 31, a second sealing groove 32, a first sealing ring 33, and a second sealing ring 34. The first sealing groove 31 is evenly opened on the outer wall of one end of the inner tube 2. The second sealing ring 34 is provided inside the first sealing groove 31. The second sealing groove 32 is evenly opened on the inner wall of one end of the sleeve 1. The first sealing ring 33 is provided inside the second sealing groove 32. The first sealing ring 33 and the sleeve 1 are connected by interference fit through the second sealing groove 32. The second sealing ring 34 and the inner tube 2 are connected by interference fit through the first sealing groove 31. The interiors of the first sealing ring 33 and the second sealing ring 34 are hollow. The inner wall of the first sealing ring 33 abuts against the outer wall of the inner tube 2, and the outer wall of the second sealing ring 34 abuts against the inner wall of the sleeve 1.

[0019] The inner wall of the first sealing ring 33 and the outer wall of the inner tube 2 abut against each other to seal one end of the sleeve 1 and the inner tube 2. The outer wall of the second sealing ring 34 and the inner wall of the sleeve 1 abut against each other to seal one end of the inner tube 2 and the sleeve 1. Under the action of abutment, the first sealing ring 33 and the second sealing ring 34 are deformed by pressure, which can increase the contact area between the inner wall of the first sealing ring 33 and the outer wall of the inner tube 2, and between the outer wall of the second sealing ring 34 and the inner wall of the sleeve 1, thereby improving the sealing effect.

[0020] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A force-transmitting expansion joint, comprising a sleeve (1); Its features are: An inner tube (2) is provided on one side inside the sleeve (1). A self-locking fixing structure (4) is fixed on the outer wall of both the sleeve (1) and the inner tube (2). The self-locking fixing structure (4) includes an adjusting block (41) uniformly fixed on the outer wall of the inner tube (2). The self-locking fixing structure (4) also includes a positioning block (46) uniformly fixed on the outer wall of the sleeve (1). A screw (42) passes through the interior of both the adjusting block (41) and the positioning block (46). A second self-locking bolt (45) is uniformly threaded on the outer wall of the screw (42) near the positioning block (46). A first self-locking bolt (44) is uniformly threaded on the outer wall of the screw (42) near the adjusting block (41). A limit bolt (43) is threaded on the outer wall of the screw (42) on the side of the adjusting block (41) away from the first self-locking bolt (44).

2. The force-transmitting expansion joint according to claim 1, characterized in that: A sealing structure (3) is provided at one end of the inner wall of the sleeve (1) and at one end of the outer wall of the inner tube (2).

3. The force-transmitting expansion joint according to claim 2, characterized in that: The sealing structure (3) includes a first sealing groove (31), a second sealing groove (32), a first sealing ring (33), and a second sealing ring (34). The first sealing groove (31) is evenly opened on the outer wall of one end of the inner tube (2), and the second sealing ring (34) is provided inside the first sealing groove (31). The second sealing groove (32) is evenly opened on the inner wall of one end of the sleeve (1), and the first sealing ring (33) is provided inside the second sealing groove (32).

4. A force-transmitting expansion joint according to claim 3, characterized in that: The first sealing ring (33) and the sleeve (1) are connected by interference fit through the second sealing groove (32), and the second sealing ring (34) and the inner tube (2) are connected by interference fit through the first sealing groove (31).

5. A force-transmitting expansion joint according to claim 3, characterized in that: The interiors of the first sealing ring (33) and the second sealing ring (34) are both hollow.

6. A force-transmitting expansion joint according to claim 3, characterized in that: The inner wall of the first sealing ring (33) and the outer wall of the inner tube (2) abut against each other, and the outer wall of the second sealing ring (34) and the inner wall of the sleeve (1) abut against each other.

7. A force-transmitting expansion joint according to claim 1, characterized in that: The adjusting blocks (41) are evenly distributed on the outer wall of the inner tube (2), and the positioning blocks (46) are evenly distributed on the outer wall of the sleeve (1).

Images