Dangerous chemical substance loading quick coupling anti-drop safety locking device

Abstract

The utility model discloses an anti-disengagement safety locking device of a quick coupling for dangerous chemical substance loading, which relates to the technical field of dangerous chemical substance loading safety and comprises a locking block, the end face of the locking block is provided with a guide hole matched with a loading crane pipe body and a limiting groove matched with an arc-shaped buckle of the quick coupling, the guide hole penetrates through the locking block, and the limiting groove is matched with the arc-shaped buckle of the quick coupling. The limiting grooves are symmetrically formed in the two sides of the guide hole, and the two sides of the guide hole communicate with the limiting grooves correspondingly. A positioning hole communicated with the guide hole is formed in the side face of the locking block, and a positioning structure used for fixing the locking block to the loading crane pipe body is arranged in the positioning hole. According to the device, a locking structure matched with the quick connector is designed, the quick connector can be effectively locked during use, the quick connector can be limited to be not moved even if unforeseen circumstances such as pressure and vibration occur, safe and reliable locking of the quick connector is achieved, and the service life of the quick connector is prolonged. The technical problem that an existing quick connector is prone to loosening / falling off to cause safety accidents is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hazardous chemical loading safety, in particular to an anti-detachment safety locking device for a hazardous chemical loading quick connector. Background Art

[0002] With the development of the economy, the transshipment of hazardous chemicals has also become a huge transportation operation. In order to improve work efficiency, loading crane quick connectors came into being. Hazardous chemical loading accidents occur due to loose quick connectors or pressure spread, so it is particularly necessary to improve the safety performance of quick connectors.

[0003] At present, the most commonly used quick connectors for loading crane pipes are common snap-on quick connectors. These snap-on quick connectors typically include a male buckle and a female buckle. The male buckle has an arc-shaped groove, and the female buckle has an arc-shaped snap. The quick connector is fixed by the arc-shaped snap on the female buckle, which snaps into the arc-shaped groove on the male buckle after the arc-shaped snap on the female buckle is moved into place. For example, the quick connector disclosed in patent document No. CN215886358U. However, in actual use, this type of quick connector is prone to loosening of the arc-shaped snap due to the pressure and vibration caused by the rapid flow of products in the pipeline, as well as the reverse force caused by the liquid pressure on the quick connector. Alternatively, the arc-shaped snap can be suddenly pulled apart due to scratches on the clothes of workers, causing the quick connector to fall off and causing safety accidents. In addition, some quick connectors with spring self-locking functions have appeared on the market, but their spring force is relatively large, which makes it particularly laborious for workers to remove them after loading. They are also prone to getting stuck and elastic deformation. After repeated use, the self-locking components will be damaged, which is not conducive to high-frequency and high-efficiency loading work on site.

[0004] Therefore, it is necessary to develop a quick connector anti-loosening safety locking technology with simple structure and easy use. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical problems existing in the prior art and provide a safety locking device for preventing a quick connector from falling off for loading hazardous chemicals. The device is designed with a locking structure compatible with the quick connector, which can effectively lock the quick connector when in use. Even in the event of unexpected situations such as pressure and vibration, the quick connector can be restricted from moving, thereby achieving safe and reliable locking of the quick connector and solving the technical problem that the existing quick connector is prone to loosening / falling off and causing safety accidents.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] A safety locking device for preventing disengagement of a quick connector for loading hazardous chemicals comprises a locking block, wherein the end face of the locking block is provided with a guide hole adapted to the tube body of the loading crane and a limiting groove adapted to the arc-shaped buckle of the quick connector, the guide hole passes through the locking block, and the limiting grooves are symmetrically arranged on both sides of the guide hole, and the two sides of the guide hole are respectively communicated with the limiting grooves; a positioning hole communicated with the guide hole is provided on the side of the locking block, and a positioning structure for fixing the locking block to the tube body of the loading crane is provided in the positioning hole.

[0008] The positioning structure includes an internal threaded sleeve and a positioning bolt made of dissimilar metal materials respectively. The internal threaded sleeve is embedded in the positioning hole, and the positioning bolt is threadedly fixed in the internal threaded sleeve. The locking block can be fixed by controlling the end of the positioning bolt to extend into the guide hole and abut against the loading crane pipe body.

[0009] The positioning bolt is a butterfly bolt made of brass, and an electrostatic release connection point is provided on the butterfly bolt. The internal threaded sleeve is made of carbon steel with a harder hardness than the positioning bolt.

[0010] Both sides of the guide hole are communicated with the middle of the limiting groove respectively.

[0011] The limiting groove includes an upper part, a middle part and a lower part. The middle part of the limiting groove is a through groove that passes through the locking block, and the upper part and the lower part of the limiting groove are both half grooves that do not pass through the locking block.

[0012] The inner diameter of the guide hole is 1-2 mm larger than the outer diameter of the loading crane pipe body.

[0013] The cross section of the locking block is a polygonal structure.

[0014] The locking block is in an octagonal structure and sequentially comprises an upper horizontal side surface, an upper left oblique side surface, a left vertical side surface, a lower left oblique side surface, a lower horizontal side surface, a lower right oblique side surface, a right vertical side surface and an upper right oblique side surface.

[0015] In the locking block, the upper horizontal side surface is parallel to the lower horizontal side surface, the left vertical side surface is parallel to the right vertical side surface, the upper left oblique side surface is symmetrical to the upper right oblique side surface, and the lower left oblique side surface is symmetrical to the upper right oblique side surface.

[0016] The positioning structure is arranged on the upper lateral side.

[0017] The advantages of adopting the utility model are:

[0018] 1. The present invention provides a guide hole, a limiting groove and a positioning structure on the locking block. By using the guide hole, it is easy to push the locking block from the loading crane pipe body to the quick-release joint. The limiting groove can effectively limit the loosening and rebound of the arc buckle, as well as the possibility of the arc buckle wearing out and causing the fitting clearance to exceed the standard, thereby causing the rebound seal to fail. The positioning structure can stably fix the device on the loading crane pipe body, effectively preventing the device from loosening and falling off. In summary, the present invention adopts the aforementioned specific structure to achieve a simple and clear operation, convenient for operators to repeatedly load vehicles, and the device is lightweight and simple in structure, but its safety performance is irreplaceable.

[0019] 2. The brass butterfly bolt used in this utility model also serves as an electrostatic discharge point, further ensuring safe loading operations. Furthermore, the use of a carbon steel internally threaded sleeve in conjunction with the brass retaining bolt not only helps prevent thread adhesion but also prevents rapid wear of the sleeve caused by the reciprocating movement of the retaining bolt. Because the internally threaded sleeve is harder than the retaining bolt, any wear that occurs is primarily on the retaining bolt, facilitating quick replacement of the retaining bolt and maximizing the lifespan of the locking device.

[0020] 3. The utility model sets the middle part of the limiting groove as a through groove that passes through the locking block, and sets the upper and lower parts of the limiting groove as half grooves that do not pass through the locking block. During actual locking, the structure of the quick connector itself can be used to position the locking block, so that the locking block can be fixed to the loading crane pipe body in the best position.

[0021] 4. The inner diameter of the guide hole in this invention is set to be 1-2 mm larger than the outer diameter of the loading crane body. This facilitates the effective movement of the locking block within the loading crane body, thus facilitating the locking and unlocking of the quick connector. This also effectively addresses the physical dimensional incompatibilities of most commercial quick connectors due to manufacturing errors.

[0022] 5. The utility model sets the locking block as a regular octagonal structure, which is not only conducive to the movement control of the locking block on the loading crane pipe body, but also helps to reduce the influence of external factors on the locking block, so that the locking block has a better locking effect on the quick connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the locking block in the utility model.

[0025] The markings in the figure are: 1. locking block, 2. guide hole, 3. limiting groove, 4. positioning hole, 5. positioning bolt, 6. through groove, 7. half groove, 8. upper horizontal side, 9. lower horizontal side. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figure 1 、 2 As shown, this embodiment provides a safety locking device for preventing the quick connector from falling off when loading hazardous chemicals, including a locking block 1. The locking block 1 has two symmetrical end faces and multiple side faces. The end face of the locking block 1 is provided with a guide hole 2 that is compatible with the loading crane pipe body and a limiting groove 3 that is compatible with the quick connector arc buckle. The guide hole 2 passes through the locking block 1, and plays a guiding role in the installation of the device on the loading crane pipe body. The locking block 1 can slide on the loading crane pipe body through the guide hole 2. The limiting groove 3 is symmetrically arranged on both sides of the guide hole 2, and both sides of the guide hole 2 are respectively connected to the limiting groove 3. A positioning hole 4 that is connected to the guide hole 2 is provided on the side of the locking block 1. A positioning structure for fixing the locking block 1 to the loading crane pipe body is provided in the positioning hole 4. The locking block 1 can be fixed to the loading crane pipe body through the positioning structure.

[0028] According to a preferred implementation of this embodiment, Figure 1 、 2 As shown, the limiting groove 3 includes an upper portion, a middle portion, and a lower portion. The middle portion of the limiting groove 3 is a through groove 6 that penetrates the locking block 1. The upper and lower portions of the limiting groove 3 are both half grooves 7 that do not penetrate the locking block 1. The locking block 1 can be quickly positioned on the loading crane pipe body through the half grooves 7 and the male buckle of the quick connector. In addition, both sides of the guide hole 2 are connected to the middle portion of the limiting groove 3.

[0029] According to another preferred implementation of this embodiment, in order to facilitate the sliding of the locking block 1 on the loading crane pipe body, the inner diameter of the guide hole 2 is designed to be 1-2 mm larger than the outer diameter of the loading crane pipe body.

[0030] The locking block 1 in this embodiment can be made of polytetrafluoroethylene material. Polytetrafluoroethylene material has sufficient ductility to meet the matching variables caused by thermal expansion and contraction and processing progress. The material is easy to process and low in price.

[0031] This embodiment does not limit the positioning structure, and any conventional structure in the prior art that can fix the locking block 1 on the loading crane pipe body can be used.

[0032] The working process of this embodiment is as follows: first, the locking block 1 is pushed to the quick connector through the guide hole 2. Since the limiting groove 3 is compatible with the arc-shaped buckle of the quick connector, the arc-shaped buckle of the quick connector can be perfectly constrained within the limiting groove 3. Then, the locking block 1 is fixed to the loading crane pipe body using the positioning structure, which can ensure that the arc-shaped buckle of the quick connector cannot automatically pop open due to unexpected factors, thereby effectively improving the anti-detachment safety of the quick connector.

[0033] Example 2

[0034] Based on Example 1, this example further optimizes the positioning structure.

[0035] like Figure 1 、 2 As shown, the positioning structure includes an internally threaded sleeve and a positioning bolt 5, each made of dissimilar metal materials. The internally threaded sleeve is embedded in the positioning hole 4, and the positioning bolt 5 is threadedly fixed in the internally threaded sleeve. The length of the positioning bolt 5 is greater than the depth of the positioning hole 4. In actual use, the locking block 1 can be quickly fixed by twisting the end of the positioning bolt 5 to extend into the guide hole 2 and abut the loading crane pipe body. Conversely, the locking block 1 can be quickly unlocked.

[0036] According to a preferred embodiment of this embodiment, to facilitate control of the positioning bolt 5 and ensure the maximum service life of the positioning structure, the positioning bolt 5 is preferably a brass butterfly bolt, and the internally threaded sleeve is made of carbon steel with a harder hardness than the positioning bolt 5. Because the hardness of the internally threaded sleeve is greater than the hardness of the positioning bolt 5, if the positioning bolt 5 becomes worn, it only needs to be replaced for continued use.

[0037] In actual use, in order to further ensure the safety of loading operations, this embodiment is also directly provided with an electrostatic discharge connection point on the butterfly bolt to facilitate real-time discharge of static electricity.

[0038] The working process of this embodiment is as follows: during use, the locking block 1 is easily pushed from the loading crane tube body to the quick connector through the guide hole 2. The possibility of the arc buckle being loosened and rebounded is easily limited by pushing the arc buckle into the symmetrical and limited space of the limiting groove 3. The positioning bolt 5 is rotated to support the outer wall of the loading crane tube body, further securing the position of the device and preventing it from loosening and falling off. The internal threaded sleeve in the positioning hole 4 is made of carbon steel and embedded in the process, which prevents the positioning hole 4 on the locking block 1 from rapid wear caused by the back and forth rotation of the positioning bolt 5, thereby improving service life and reliability.

[0039] Example 3

[0040] Based on the embodiment 1 or embodiment 2, this embodiment provides further advantages for the structure of the locking block 1 .

[0041] like Figure 1 、 2 As shown, the cross section of the locking block 1 is a polygonal structure.

[0042] Furthermore, the locking block 1 has an octagonal structure and includes an upper horizontal side 8, an upper left oblique side, a left vertical side, a lower left oblique side, a lower horizontal side 9, a lower right oblique side, a right vertical side and an upper right oblique side in sequence, and the positioning structure is arranged on the upper horizontal side 8.

[0043] Furthermore, in the locking block 1, the upper horizontal side surface 8 is parallel to the lower horizontal side surface 9, the left vertical side surface is parallel to the right vertical side surface, the upper left oblique side surface is symmetrical to the upper right oblique side surface, and the lower left oblique side surface is symmetrical to the right upper right oblique side surface.

[0044] The above description is only a specific embodiment of the present invention. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes; all disclosed features, or all steps in the methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A quick connector anti-disengagement safety locking device for hazardous chemicals loading, characterized by: The invention comprises a locking block (1), wherein the end surface of the locking block (1) is provided with a guide hole (2) adapted to the loading crane pipe body and a limiting groove (3) adapted to the arc buckle of the quick connector, the guide hole (2) passes through the locking block (1), and the limiting grooves (3) are symmetrically arranged on both sides of the guide hole (2), and the two sides of the guide hole (2) are respectively communicated with the limiting grooves (3); the side surface of the locking block (1) is provided with a positioning hole (4) communicated with the guide hole (2), and a positioning structure for fixing the locking block (1) to the loading crane pipe body is provided in the positioning hole (4).

2. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 1 is characterized by: The positioning structure comprises an internal threaded sleeve and a positioning bolt (5) respectively made of different metal materials. The internal threaded sleeve is embedded in the positioning hole (4), and the positioning bolt (5) is threadedly fixed in the internal threaded sleeve. The locking block (1) can be fixed by controlling the end of the positioning bolt (5) to extend into the guide hole (2) and abut against the loading crane pipe body.

3. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 2 is characterized by: The positioning bolt (5) is a butterfly bolt made of brass, and an electrostatic release connection point is provided on the butterfly bolt. The internal threaded sleeve is made of carbon steel having a harder hardness than that of the positioning bolt (5).

4. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 1 is characterized by: Both sides of the guide hole (2) are respectively communicated with the middle of the limiting groove (3).

5. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 1 is characterized in that: The limiting groove (3) comprises an upper portion, a middle portion and a lower portion, the middle portion of the limiting groove (3) being a through groove (6) that passes through the locking block (1), and the upper portion and the lower portion of the limiting groove (3) being half grooves (7) that do not pass through the locking block (1).

6. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 1 is characterized by: The inner diameter of the guide hole (2) is 1-2 mm larger than the outer diameter of the loading crane pipe body.

7. A quick connector anti-disengagement safety locking device for hazardous chemicals loading according to any one of claims 1 to 6, characterized in that: The cross section of the locking block (1) is a polygonal structure.

8. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 7, characterized in that: The locking block (1) has an octagonal structure and comprises, in sequence, an upper horizontal side surface (8), an upper left oblique side surface, a left vertical side surface, a lower left oblique side surface, a lower horizontal side surface (9), a lower right oblique side surface, a right vertical side surface and an upper right oblique side surface.

9. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 8, characterized in that: In the locking block (1), the upper horizontal side surface (8) is parallel to the lower horizontal side surface (9), the left vertical side surface is parallel to the right vertical side surface, the upper left oblique side surface is symmetrical to the upper right oblique side surface, and the lower left oblique side surface is symmetrical to the lower right oblique side surface.

10. The anti-disengagement safety locking device for a quick connector for loading hazardous chemicals according to claim 8, characterized in that: The positioning structure is arranged on the upper transverse side surface (8).

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