A three-layer concentric sleeve type automobile sealing cap locking device

Abstract

The present invention discloses a three-layer concentric sleeve type automobile sealing cap locking device, comprising a liquid phase upper drop tube and a locking mechanism arranged on its outer side; the locking mechanism comprises a cylinder mounting plate on the outer wall surface of the liquid phase upper drop tube, the outer side of the liquid phase upper drop tube is located below the cylinder mounting plate and is sleeved with a sealing cap connecting plate, the sealing cap connecting plate is connected to the cylinder mounting plate via a fixing rod; driving cylinders are symmetrically arranged on the cylinder mounting plate, a transmission assembly is arranged at one end of the driving cylinder piston rod away from the driving cylinder, and a locking assembly is arranged at one end of the transmission assembly away from the driving cylinder for clamping or loosening the tank mouth. The three-layer concentric sleeve type automobile sealing cap locking device of the present invention improves the structure of automobile airtight locking, and the overall structure is exposed to the outside, which reduces the difficulty of daily maintenance for the operator; and the liquid phase upper drop tube is provided as a three-layer medium circulation pipeline, which has good heating effect, high reliability and strong stability for the whole process of heating and loading special media.

Description

Technical Field

[0001] The invention relates to the technical field of loading and unloading arms for oil depots and train tank cars in chemical plants, and in particular to a three-layer concentric sleeve type automobile sealing cap locking device. Background Art

[0002] In order to control the emission of air pollutants and improve the atmospheric environment, most oil storage and transportation depots will inevitably adopt closed loading cranes for gas trucks, and the sealing and pressing between the sealing cap and the tank mouth is one of the key technologies. At present, there are many types of sealing cap pressing devices commonly used in closed loading cranes on the market, but the structures are uneven and the failure rate is high. Please refer to Figure 1 The general automobile sealing cap locking mechanism has a sealed locking structure that is basically enclosed inside the sealing cap connector. Once the internal parts are damaged abnormally, it is not easy for the operator to quickly analyze and detect it, which adds many difficulties to daily maintenance. When the crane pipe requires special media to circulate, a heating coil is generally used. The manufacturing process is difficult and the heating effect is poor, causing the cooling pipe of the circulating medium to be blocked, and it also causes the operator to misjudge whether the sealing and locking are ineffective. The reliability is poor, especially when encountering special media such as liquid sulfur, fuel oil and other high-temperature media for loading, and when the fluid passes through the crane arm, heating is required throughout the process. This is particularly obvious. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a three-layer concentric sleeve type automobile sealing cap locking device.

[0004] The present invention provides a three-layer concentric sleeve type automobile sealing cap locking device, comprising a liquid phase upper vertical tube, wherein a locking mechanism is provided on the outer side of the liquid phase upper vertical tube; the locking mechanism comprises a cylinder mounting plate fixedly sleeved on the outer side wall surface of the liquid phase upper vertical tube, and a sealing cap connecting plate is sleeved on the outer side of the liquid phase upper vertical tube and located below the cylinder mounting plate, and the sealing cap connecting plate is connected to the cylinder mounting plate through a fixed rod in the vertical direction; driving cylinders are symmetrically provided on the cylinder mounting plate on both sides of the liquid phase upper vertical tube, and a transmission assembly is provided on the end of the piston rod of the driving cylinder away from the driving cylinder, and a locking assembly is provided on the end of the transmission assembly away from the driving cylinder, and the locking assembly is arranged on the outer side of the liquid phase upper vertical tube and located below the sealing cap connecting plate, for achieving clamping or loosening of the tank mouth.

[0005] Preferably, the transmission assembly includes a sliding sleeve which is sleeved on the outside of the liquid phase upper vertical tube and located below the cylinder mounting plate, and an annular mounting plate is integrally formed on the bottom of the sliding sleeve; a guide belt is embedded on the inner wall of the sliding sleeve, and the guide belt abuts against the outer wall of the liquid phase upper vertical tube; a connecting lock nut is provided on the upper part of the sliding sleeve, and lock nut ears are symmetrically provided on both sides of the connecting lock nut corresponding to the driving cylinder, and the hinge joint of the driving cylinder is connected to the corresponding lock nut ear through a first pin assembly.

[0006] Preferably, the locking assembly includes a cylindrical guide tube arranged on the bottom surface of the sealing cap connecting plate and sleeved on the outside of the sliding sleeve, and the bottom surface of the sealing cap connecting plate is located on the outside of the guide tube and is provided with an annular sealing rubber cap; strip slide grooves in the vertical direction are symmetrically provided on both sides of the guide tube, and two groups of claw assemblies are provided on the annular mounting plate corresponding to the strip slide grooves; each group of the claw assemblies includes two claw ears arranged on the plate surface of the annular mounting plate, and a claw is provided between the two claw ears through a second pin shaft assembly and a torsion spring.

[0007] Preferably, a sealing ring stop cover is provided between one end of the fixing rod located below the sealing cap connecting plate and the sealing cap connecting plate, and a first sealing ring is provided between the sealing ring stop cover and the sliding sleeve.

[0008] Preferably, a second sealing ring is provided between the connecting lock nut and the sliding sleeve.

[0009] Preferably, the liquid phase upper vertical pipe is configured as a three-layer concentric casing.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The three-layer concentric sleeve type automobile sealing cap locking device of the present invention improves the structure of automobile airtight locking, wherein the driving cylinder, connecting lock nut and sliding sleeve and other related structures are exposed to the outside. When the parts are damaged or abnormal, they can be quickly analyzed, inspected and repaired, reducing the difficulty of daily maintenance for the operator; and the liquid phase vertical pipe is provided as a three-layer medium circulation pipeline, wherein the innermost layer of the pipeline flows through the liquid (a liquid phase port), the outermost layer flows through the gas phase oil and gas recovery (b gas phase port), and the middle layer can circulate heating steam for the medium that needs heating (c inlet, d outlet). It is firm and reliable, and can heat the special medium during the whole process of loading, with good heating effect, high reliability and strong stability.

[0012] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0014] Figure 1 This is a schematic diagram of the cross-section of the sealing cap pressing device used in the closed loading crane pipe of automobiles commonly found on the market;

[0015] Figure 2 A schematic structural diagram of a three-layer concentric sleeve-type automobile sealing cap locking device provided by an embodiment of the present invention;

[0016] Figure 3 A schematic cross-sectional view of a three-layer concentric sleeve-type automobile sealing cap locking device provided by an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the assembled claw assembly;

[0018] Numbers in the figure: 1, liquid phase vertical pipe; 2, cylinder mounting plate; 3, sealing cap connecting plate; 4, fixing rod; 5, driving cylinder; 6, sliding sleeve; 7, annular mounting plate; 8, guide belt; 9, connecting lock nut; 10, lock nut lifting ear; 11, first pin assembly; 12, guide tube; 13, sealing rubber cap; 14, strip slide; 15, claw lifting ear; 16, second pin assembly; 17, torsion spring; 18, claw; 19, sealing ring cover; 20, first sealing ring; 21, second sealing ring; 22, drain plug;

[0019] 01. Locking cylinder; 02. Heating coil; 03. Sealing cap connector; 04. Cylinder rod hinge joint; 05. Pin; 06. Connecting rod; 07. Original design sealing rubber cap; 08. Clamping claw. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] refer to Figure 1-4This is a common automobile sealing cap locking mechanism. When the original design sealing cap 07 is tightly attached to the automobile tank mouth, the air source is started, and the locking cylinder 01 works, causing the cylinder rod to perform telescopic movement relative to the cylinder body. At the same time, the cylinder rod hinge joint 04, pin 05, connecting rod 06, and claw 08 are combined and linked to form a crank-connecting rod movement, ultimately achieving the phenomenon of making the claw 08 clamp or loosen the tank mouth.

[0023] However, the disadvantage of the above structure is that this closed locking structure, including the cylinder rod hinge joint 04, the pin shaft 05, the connecting rod 06 and other related structures, is basically enclosed in the sealing cap connector 03. Once the internal parts are damaged, it is not easy for the operator to quickly analyze and detect the abnormality, which adds many difficulties to daily maintenance. In addition, when the crane pipe circulation requires special media, a heating coil 02 is generally used. The manufacturing process is difficult and the heating effect is not good, resulting in blockage of the circulating medium cooling pipeline, and it also causes the operator to misjudge whether the closed locking is ineffective.

[0024] Please refer to Figures 2-4 The embodiment of the present invention provides a three-layer concentric sleeve-type automobile sealing cap locking device, including a liquid phase upper drop pipe 1, which is configured as a three-layer concentric sleeve. The innermost layer of the liquid phase upper drop pipe 1 flows through the liquid (a liquid phase port), the outermost layer flows through the gas phase oil and gas recovery (b gas phase port), and the middle layer can flow heating steam for the need of heating medium (c inlet, d outlet). A drain plug 22 is provided at the bottom of the middle layer, and the entire structure is firm and reliable.

[0025] A locking mechanism is provided on the outside of the liquid phase upper vertical pipe 1;

[0026] The locking mechanism includes a cylinder mounting plate 2 fixedly mounted on the outer wall of the liquid phase upper vertical tube 1, and a sealing cap connecting plate 3 is mounted on the outer side of the liquid phase upper vertical tube 1 below the cylinder mounting plate 2. The sealing cap connecting plate 3 is connected to the cylinder mounting plate 2 through a fixing rod 4 in the vertical direction. Both ends of the fixing rod 4 are provided with threads, so both ends can pass through the corresponding cylinder mounting plate 2 or the sealing cap connecting plate 3 and be fixed and installed through corresponding nuts; wherein, a sealing ring cover 19 is provided between the end of the fixing rod 4 located below the sealing cap connecting plate 3 and the sealing cap connecting plate 3, and a first sealing ring 20 is provided between the sealing ring cover 19 and the sliding sleeve 6.

[0027] The cylinder mounting plate 2 is symmetrically provided with driving cylinders 5 on both sides of the liquid phase upper vertical tube 1. A transmission assembly is provided at the end of the piston rod of the driving cylinder 5 away from the driving cylinder 5. A locking assembly is provided at the end of the transmission assembly away from the driving cylinder 5. The locking assembly is arranged on the outside of the liquid phase upper vertical tube 1 and below the sealing cap connecting plate 3, and is used to clamp or loosen the tank mouth.

[0028] In a preferred embodiment, the transmission assembly includes a sliding sleeve 6 that is sleeved on the outside of the liquid phase upper drop tube 1 and located below the cylinder mounting plate 2, and the bottom of the sliding sleeve 6 is integrally provided with an annular mounting plate 7; in order to prevent sliding wear between the sliding sleeve 6 and the liquid phase upper drop tube 1, a guide belt 8 with a guiding function is provided between the inner side of the sliding sleeve 6 and the outer side of the liquid phase upper drop tube 1, and the sliding sleeve 6 can be slidably arranged on the outside of the liquid phase upper drop tube 1 up and down; a connecting lock nut 9 is provided on the upper part of the sliding sleeve 6, and lock nut ears 10 are symmetrically provided on both sides of the connecting lock nut 9 corresponding to the driving cylinder 5, and the hinged joint of the driving cylinder 5 is connected to the corresponding lock nut ear 10 through a first pin shaft assembly 11.

[0029] The first pin assembly 11 includes a pin, a flat washer and a cotter pin, and is used to connect the hinge joint of the driving cylinder 5 with the lock nut lifting ear 10.

[0030] In a preferred embodiment, the locking assembly includes a cylindrical guide tube 12 arranged on the bottom surface of the sealing cap connecting plate 3 and sleeved on the outside of the sliding sleeve 6. The bottom surface of the sealing cap connecting plate 3 is located on the outside of the guide tube 12 and is provided with an annular sealing rubber cap 13; vertical strip grooves 14 are symmetrically provided on both side surfaces of the guide tube 12, and the annular mounting plate 7 is arranged inside the guide tube 12 and below the sealing rubber cap 13. Two groups of claw assemblies are provided on the annular mounting plate 7 corresponding to the strip grooves 14; each group of claw assemblies includes two claw ears 15 arranged on the plate surface of the annular mounting plate 7, and a claw 18 is provided between the two claw ears 15 through a second pin shaft assembly 16 and a torsion spring 17.

[0031] The second pin shaft assembly 16 includes a pin shaft, a flat washer and a cotter pin. The torsion spring 17 is sleeved on the outer side of the pin shaft in the second pin shaft assembly 16 and is located on the side away from the cotter pin in the corresponding second pin shaft assembly 16. One end of the torsion spring 17 is set on the annular mounting plate 7, and the other end is set on the claw 18.

[0032] In a preferred embodiment, a second sealing ring 21 is provided between the connecting lock nut 9 and the sliding sleeve 6 .

[0033] The working principle of the present invention is as follows: the air source is started to drive the piston rod of the cylinder 5 to extend relative to the cylinder body, and then the hinge joint of the piston rod of the cylinder 5, the first pin assembly 11, the connecting lock nut 9, and the sliding sleeve 6 are driven to move downward relative to the sealing cap connecting plate 3 and the sealing rubber cap 13 at the same time. When the claw 18 is pushed to the end k of the strip slide groove 14 on the guide tube 12, the claw 18 begins to retract and finally retracts completely into the guide tube 12. When the crane is operated to make its sealing rubber cap 13 fit tightly against the tank mouth of the automobile, the gas source is started to drive the piston rod of the air cylinder 5 to retract relative to the cylinder body, until the above movement is reversed and the claw 18 is extended, finally the claw 18 is clamped or loosened. The overall sealing cap locking device is embedded in the liquid phase vertical pipe 1 (comprising 3 layers of pipes). The innermost layer of the pipe flows through the liquid (a liquid phase port), the outermost layer flows through the gas phase oil and gas recovery (b gas phase port), and the middle layer can be used for the circulation of heating steam (c inlet, d outlet) for the need of heating medium. It is firm and reliable. The overall structure is easy to maintain without leakage.

[0034] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0035] Throughout this specification, terms such as "one embodiment" or "some embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A three-layer concentric sleeve type automobile sealing cap locking device, characterized in that: The cam is secured to the outside of the cylinder and has a locking mechanism which allows the cam to lock onto the outside of the cylinder and into position relative to the outside of the cylinder. The outer wall of the liquid phase upper vertical tube abuts against each other; a connecting lock nut is provided on the upper part of the sliding sleeve, and lock nut ears are symmetrically provided on both sides of the connecting lock nut corresponding to the driving cylinder, and the hinge joint of the driving cylinder is connected to the corresponding lock nut ears through a first pin shaft assembly; the locking assembly includes a cylindrical guide tube provided on the bottom surface of the sealing cap connecting plate and sleeved on the outside of the sliding sleeve, and the bottom surface of the sealing cap connecting plate is located on the outside of the guide tube and is provided with an annular sealing rubber cap; the guide tube There are symmetrical strip slides in the vertical direction on both sides, and two groups of claw assemblies are provided on the annular mounting plate corresponding to the strip slides; each group of the claw assemblies includes two claw ears arranged on the plate surface of the annular mounting plate, and a claw is provided between the two claw ears through a second pin assembly and a torsion spring; the liquid phase upper vertical pipe is configured as a three-layer concentric sleeve, wherein the innermost layer of the pipeline flows through the liquid, the outermost layer flows through the gas phase oil and gas recovery, and the middle layer can be used for heating steam that requires heating medium.

2. The three-layer concentric sleeve type automobile sealing cap locking device according to claim 1 is characterized in that: A sealing ring stop cover is provided between one end of the fixing rod located below the sealing cap connecting plate and the sealing cap connecting plate, and a first sealing ring is provided between the sealing ring stop cover and the sliding sleeve.

3. The three-layer concentric sleeve type automobile sealing cap locking device according to claim 2, characterized in that: A second sealing ring is provided between the connecting lock nut and the sliding sleeve.

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