Automatic connecting device for connecting flanges of fluid loading and unloading arms

Abstract

The utility model discloses an automatic connecting device of a fluid loading and unloading arm connecting flange, which comprises a plurality of guide plates and a plurality of locking mechanisms which are arranged along the circumferential direction of the loading and unloading arm connecting flange, and the guide plates are hinged on the loading and unloading arm connecting flange. The inner side of the guide plate is provided with a guide slope which guides flange butt joint and is suitable for flange calibers of different sizes; the lower end of the guide slope is provided with a limiting part; the locking mechanism comprises a support, a movable arm and a clamping jaw, the middle of the clamping jaw is hinged to the front end of the movable arm, the rear end of the clamping jaw is connected with the middle end of the movable arm through a linkage mechanism, and a clamping jaw driving mechanism connected with the linkage mechanism is installed on the loading and unloading arm. Through the arrangement of the hinged guide plate, rigid collision between the guide plate and the flange can be avoided, and the flange is guided; the flange butt joint device is suitable for butt joint of flanges with various calibers through the guide inclined face, rotation of the clamping jaws is achieved without occupying too much space through the linkage mechanism with the movable arm, and automatic connection of the flanges is achieved.

Description

Technical Field

[0001] The utility model relates to a quick connector, in particular to an automatic connecting device for a fluid loading and unloading arm connecting flange. Background Art

[0002] Before using a crane pipe to transport fluid media, the crane pipe joint flange and the tank truck joint flange must be docked. Traditional docking is manual docking, which is time-consuming and labor-intensive due to the heavy weight of the crane pipe. A variety of quick docking or connection devices are disclosed in the prior art. For example, an application number is 202122079894.6 and the name is a hydraulic quick connection device for loading and unloading arms. The guide plate and the clamping device in the device are fixed structures, which are only suitable for the docking of flanges of one radial size. The use range of the device is narrow and the flexibility is not strong. For example, an application number is 201410703642.8 and the name is a synchronous quick connection device. The guide plate in the device is a movable seat, which limits the range of flange diameters, and the claws rotate around the limiting shaft, which requires a large space during the rotation process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an automatic connection device for connecting flanges of fluid loading and unloading arms with reasonable design, convenient use, small activity space, strong use flexibility and high automation level in view of the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An automatic connection device for a connection flange of a fluid loading and unloading arm, the device comprises a plurality of guide plates and a plurality of locking mechanisms arranged along the circumference of the connection flange of the loading and unloading arm, wherein the guide plate is hinged on the connection flange of the loading and unloading arm, a guide slope is arranged on the inner side of the guide plate for guiding the flange to dock and is suitable for flanges of different sizes, and a limit portion is arranged at the lower end of the guide slope;

[0006] The locking mechanism includes a support fixed on the connecting flange of the loading and unloading arm, a movable arm hinged on the support and a claw pressed on the connecting flange of the loading and unloading arm. The middle part of the claw is hinged to the front end of the movable arm, and the rear end of the claw is connected to the middle end of the movable arm through a linkage mechanism. A claw driving mechanism connected to the linkage mechanism is installed on the loading and unloading arm. A travel switch for controlling the operation of the claw driving mechanism is also installed on the loading and unloading arm. The travel switch is connected to the claw driving mechanism signal through a controller to realize automatic control of the automatic loading and unloading arm to receive the vehicle.

[0007] The technical problem to be solved by the utility model can also be achieved through the following technical scheme, the linkage mechanism includes a movable seat fixed on the claw driving mechanism, and a first transmission rod and a second transmission rod hinged on the movable seat, the other end of the first transmission rod is hinged to the rear end of the claw, and the other end of the second transmission rod is hinged to the middle end of the movable arm.

[0008] The technical problem to be solved by the utility model can also be achieved through the following technical solution: the front end of the clamping claw is hinged with a clamping block pressed on the end face of the loading and unloading arm connecting flange, and the clamping block is in surface contact with the loading and unloading arm connecting flange.

[0009] The technical problem to be solved by the utility model can also be achieved through the following technical solution: a movable wheel arranged opposite to the root of the guide plate is installed on the top of the travel switch, and an eccentric wheel cooperating with the travel switch is provided at the root of the guide plate.

[0010] The technical problem to be solved by the utility model can also be achieved through the following technical solution: a sealing ring groove for installing a sealing ring is provided along the circumference of the connecting flange interface on the butt end face of the loading and unloading arm connecting flange.

[0011] The technical problem to be solved by the utility model can also be achieved through the following technical solution: at least two sealing ring grooves are provided to ensure double sealing, longer service life and higher sealing reliability.

[0012] The technical problem to be solved by the utility model can also be achieved through the following technical solution: the claw driving mechanism is provided with a driving cylinder arranged along the axis of the connecting flange of the loading and unloading arm, and the piston rod of the driving cylinder is connected to the linkage mechanism.

[0013] The technical problem to be solved by the utility model can also be achieved through the following technical solution: the guide plate and the locking mechanism are evenly arranged along the circumference of the loading and unloading arm connecting flange, and the guide plate and the locking mechanism are arranged at intervals.

[0014] The technical problem to be solved by the utility model can also be achieved through the following technical solution: the guide plates are provided with three pieces, and the locking mechanisms are provided with three sets.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] First, the guide plate is hingedly mounted on the connecting flange of the loading and unloading arm, which can avoid the rigid collision between the guide plate and the flange and guide the flange; by setting the guiding inclined surface, it is suitable for the docking of flanges with various calibers;

[0017] Secondly, by providing a linkage mechanism with a movable arm, the radial length of the rotation of the claw is controlled under the limit of the movable arm, so that the rotation of the claw is realized without occupying too much space. Under the transmission of the first transmission rod and the second transmission rod, the axial movement of the movable arm and the claw along the connecting flange of the loading and unloading arm is realized, thereby realizing the rapid connection of the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the automatic connection device of the fluid loading and unloading arm connecting flange of the utility model.

[0019] In the figure: 1-loading and unloading arm connecting flange, 2-guide plate, 3-limiting part, 4-guide inclined plane, 5-pressing block, 6-claw, 7-first transmission rod, 8-second transmission rod, 9-movable seat, 10-claw driving mechanism, 11-movable arm, 12-travel switch, 13-eccentric wheel, 14-support, 15-sealing ring groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Reference Figure 1 , an automatic connection device for a connection flange of a fluid loading and unloading arm, the device comprises a plurality of guide plates 2 and a plurality of locking mechanisms arranged along the circumference of the connection flange 1 of the loading and unloading arm, the guide plates 2 are hinged on the connection flange 1 of the loading and unloading arm, the inner side of the guide plates 2 is provided with a guide slope 4 which guides the flange to be docked and is suitable for flanges of different sizes, and a limit portion 3 is provided at the lower end of the guide slope 4; the guide plates 2 and the locking mechanisms are evenly arranged along the circumference of the connection flange of the loading and unloading arm, the guide plates 2 and the locking mechanisms are arranged at intervals, the guide plates 2 are provided with three pieces, and the locking mechanisms are provided in three sets;

[0023] The locking mechanism includes a support 14 fixed on the connection flange of the loading and unloading arm, a movable arm 11 hinged on the support 14, and a claw 6 pressed on the connection flange of the loading and unloading arm. The middle part of the claw 6 is hinged to the front end of the movable arm 11, and the rear end of the claw 6 is connected to the middle end of the movable arm 11 through a linkage mechanism. By providing the movable arm, the rotation range of the claw is limited when locking or unlocking, so as to avoid the claw from occupying too much space when rotating.

[0024] A claw driving mechanism 10 connected to the linkage mechanism is installed on the loading and unloading arm. The claw driving mechanism 10 is provided with a driving cylinder arranged along the axis of the connecting flange of the loading and unloading arm. The driving cylinder is preferably a single-acting air-closed driving cylinder. When used on site, the driving cylinder is ventilated and the piston rod is retracted. After the driving cylinder receives the signal of the stroke switch, the air circuit is closed and the piston rod is extended to press the flange surface to ensure sealing, and continue to press under the action of the single-acting spring; if a safety accident occurs on site and the air source and power supply are disconnected, the locking can still be ensured. The piston rod of the driving cylinder is connected to the linkage mechanism.

[0025] A travel switch 12 for controlling the operation of the claw driving mechanism is also installed on the loading and unloading arm. The travel switch is connected to the claw driving mechanism signal through a controller. A movable wheel arranged opposite to the root of the guide plate is installed on the top of the travel switch 12. An eccentric wheel 13 cooperating with the travel switch 12 is provided at the root of the guide plate 2. The controller adopts any system or structure with a control function disclosed in the prior art.

[0026] The linkage mechanism includes a moving seat 9 fixed on the claw driving mechanism, and a first transmission rod 8 and a second transmission rod 7 hinged on the moving seat 9, the other end of the first transmission rod 8 is hinged to the rear end of the claw 6, and the other end of the second transmission rod 7 is hinged to the middle end of the movable arm 11, the length of the first transmission rod is greater than the length of the second transmission rod, or the fixed position of the claw driving mechanism and the moving seat is set on the side of the moving seat close to the second transmission rod.

[0027] The front end of the clamping claw 6 is hinged with a clamping block 5 which is pressed on the end surface of the connecting flange of the loading and unloading arm, and the clamping block is in surface contact with the connecting flange of the loading and unloading arm.

[0028] A sealing ring groove 15 for installing a sealing ring is provided on the butt joint end surface of the loading and unloading arm connecting flange along the circumference of the connecting flange butt joint. There are at least two sealing ring grooves 15, which are coaxially arranged with the loading and unloading arm connecting flange.

[0029] When the crane pipe joint flange 1 is butted against the tank truck joint flange, the tank truck joint flange approaches the crane pipe joint flange 1 along the guide slope 4 of the guide plate 2. Under the action of the guide plate 2, the crane pipe joint flange 1 and the tank truck joint flange are quickly butted against each other. When the tank truck joint flange moves to the limiting portion 3 of the guide plate 2, the crane pipe joint flange 1 and the tank truck joint flange are butted against each other. At the same time, the eccentric wheel 13 of the guide plate 2 abuts against the movable wheel of the travel switch 12, triggering the travel switch 12, and then the controller controls the drive cylinder to work.

[0030] The piston rod of the driving cylinder extends toward the tank truck joint flange, and the moving seat 9 moves toward the tank truck joint flange. At the same time, the first transmission rod 8 pushes the claw 6 to rotate around the movable arm toward the center of the crane pipe joint flange 1, so that the clamping block 5, under the action of the claw 6, presses the crane pipe joint flange 1 and the tank truck joint flange, thereby completing the accurate docking of the crane pipe joint flange 1 and the tank truck joint flange.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automated connection device for a connection flange of a fluid loading and unloading arm, the device comprising a plurality of guide plates and a plurality of locking mechanisms arranged along the circumference of the connection flange of the loading and unloading arm, characterized in that: The guide plate is hinged on the connection flange of the loading and unloading arm, and a guide inclined surface is provided on the inner side of the guide plate to guide the flange to dock and is suitable for flanges of different sizes, and a limit portion is provided at the lower end of the guide inclined surface; The locking mechanism includes a support fixed on the connecting flange of the loading and unloading arm, a movable arm hinged on the support and a claw pressed on the connecting flange of the loading and unloading arm, the middle part of the claw is hinged to the front end of the movable arm, and the rear end of the claw is connected to the middle end of the movable arm through a linkage mechanism. A claw driving mechanism connected to the linkage mechanism is installed on the loading and unloading arm, and a travel switch for controlling the operation of the claw driving mechanism is also installed on the loading and unloading arm, and the travel switch is connected to the claw driving mechanism signal through a controller.

2. The automatic connection device for connecting flanges of a fluid loading and unloading arm according to claim 1, characterized in that: The linkage mechanism includes a moving seat fixed on the claw driving mechanism, and a first transmission rod and a second transmission rod hinged on the moving seat, the other end of the first transmission rod is hinged to the rear end of the claw, and the other end of the second transmission rod is hinged to the middle end of the movable arm.

3. The automatic connection device for connecting flanges of a fluid loading and unloading arm according to claim 2, characterized in that: A pressing block is hinged at the front end of the clamping claw and is pressed on the end surface of the connecting flange of the loading and unloading arm, and the pressing block is in surface contact with the connecting flange of the loading and unloading arm.

4. The automatic connection device for connecting flanges of a fluid loading and unloading arm according to claim 1, characterized in that: A movable wheel arranged opposite to the root of the guide plate is installed on the top of the travel switch, and an eccentric wheel matched with the travel switch is arranged at the root of the guide plate.

5. The automatic connection device for connecting flanges of fluid loading and unloading arms according to claim 1, characterized in that: A sealing ring groove for installing a sealing ring is arranged along the circumference of the connecting flange butt interface on the butt end surface of the loading and unloading arm connecting flange.

6. The automatic connection device for connecting flanges of a fluid loading and unloading arm according to claim 5, characterized in that: There are at least two sealing ring grooves.

7. The automatic connection device for connecting flanges of a fluid loading and unloading arm according to claim 1, characterized in that: The claw driving mechanism is provided with a driving cylinder arranged along the axis of the connecting flange of the loading and unloading arm, and the piston rod of the driving cylinder is connected with the linkage mechanism.

8. The automatic connection device for connecting flanges of a fluid loading and unloading arm according to claim 1, characterized in that: The guide plates and the locking mechanisms are evenly arranged along the circumference of the connecting flange of the loading and unloading arm, and the guide plates and the locking mechanisms are arranged at intervals.

9. An automated connection device for a fluid loading and unloading arm connecting flange according to claim 1 or 8, characterized in that: The guide plates are provided in three pieces, and the locking mechanisms are provided in three sets.

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