Emergency pull-off system

Abstract

This disclosure relates to an emergency break-off system. The emergency break-off system includes a motion device, a support, a guide drive shaft, an engagement drive mechanism, a break-off rope, and a break-off device. The support is configured to be supported on the ground; the guide drive shaft is driven to the support and configured to be controlled by the rotation of the motion device relative to the support; the engagement drive mechanism includes a driven component and an active component driven to the guide drive shaft; the driven component is configured to move relative to the active component between an engaged position and a disengaged position; one end of the break-off rope is fixed and wound around the driven component, and the other end is fixed to the break-off device. The emergency break-off system of this disclosure enables the operator to easily adjust the relative position of the emergency break-off system to the tanker truck during the preparatory stage before the loading and unloading of liquefied petroleum gas tankers begins, adapting to different tanker truck parking situations, by having the driven component in the disengaged position readily available.

Description

Technical Field

[0001] This disclosure relates to the field of liquefied gas loading operation technology, and in particular to an emergency break-off system. Background Technology

[0002] Liquefied petroleum gas (LPG) tank trucks are equipped with emergency shut-off valves. These valves are closed when not loading or unloading. However, during LPG loading and unloading, workers must open the emergency shut-off valves and continuously monitor the process. If a leak occurs in the tank truck's pipeline, workers must quickly disconnect the emergency shut-off valve to prevent serious accidents.

[0003] However, when the leakage of liquefied petroleum gas (LPG) is large, the air will mix with the LPG to form an explosive mixture, making it impossible for workers to approach the emergency shut-off valve when the leak is detected. Therefore, it is necessary to develop a tank truck emergency shut-off system that allows workers to remotely operate the emergency shut-off valve to prevent accidents. Summary of the Invention

[0004] This disclosure provides an emergency pull-out system to address the problems existing in the prior art.

[0005] According to a first aspect of this disclosure, an emergency pull-out system is provided, comprising:

[0006] A support frame, configured to be supported on the ground;

[0007] A guide drive shaft is rotatably connected to the bracket and configured to be controlled by a motion device to rotate relative to the bracket.

[0008] A meshing transmission device includes a driven component and a driving component that is drivenly connected to the guide drive shaft; the driven component is configured to move relative to the driving component between an engaged position and a disengaged position; when in the engaged position, the driven component is configured to be engaged and drivenly connected to the driving component; when in the disengaged position, the driven component is configured to be disengaged from the driving component.

[0009] A break rope is provided, one end of which is fixed and wrapped around the driven assembly, and the other end is configured to be fixed to the break device.

[0010] In one embodiment of this disclosure, the active component includes an active transmission sleeve configured to drively connect with the guide drive shaft, the active transmission sleeve being provided with active engagement teeth; the driven component includes a driven disc, the driven disc being provided with driven engagement teeth; when the driven component is in the engaged position, the active engagement teeth engage with the driven engagement teeth; when it is in the disengaged position, the active engagement teeth separate from the driven engagement teeth and rotate freely relative to the guide drive shaft.

[0011] In one embodiment of this disclosure, the active component includes a first fixed base, the active transmission sleeve is configured to be rotatably connected to the first fixed base, and the guide transmission shaft passes through the active transmission sleeve and is throttle connected to the active transmission sleeve.

[0012] The driven component includes a second fixed base and a driven transmission sleeve rotatably connected to the second fixed base. The driven disk is rotatably connected to the driven transmission sleeve. The driven transmission sleeve is configured to be sleeved on the outside of the guide transmission shaft and is configured to move along the axial direction of the guide transmission shaft to an engagement position and a disengagement position.

[0013] In one embodiment of this disclosure, the meshing transmission device further includes a clutch elastic component; when the driven component is in the meshing position, the driven disc is meshed and connected to the driving transmission sleeve under the elastic force of the clutch elastic component; when in the disengaged position, the clutch elastic component is compressed, and the driving transmission sleeve separates from the driven disc.

[0014] In one embodiment of this disclosure, the engagement transmission device further includes a manual clutch assembly configured to move the driven disc to a disengaged position.

[0015] In one embodiment of this disclosure, the active engagement tooth has an active disengagement ramp, and the driven engagement tooth has a driven disengagement ramp, the active disengagement ramp and the driven disengagement ramp cooperate with each other; when the driven component is in the engagement position and the rotational torque on the driven disk is greater than a threshold, it moves away from the active component to the disengagement position.

[0016] In one embodiment of this disclosure, the driven assembly further includes a driven wheel configured to be fixedly connected to the driven disc; one end of the pull rope is configured to be fixed and wound around the driven wheel.

[0017] In one embodiment of this disclosure, a limiting locking device is further included, which includes a limiting rod and a locking slider; the limiting rod is configured to be fixedly connected to the bracket and arranged parallel to the guide transmission shaft; one end of the locking slider is configured to be fixedly connected to the meshing transmission device, and the other end is configured to be sleeved on the limiting rod; the locking slider is configured to lock with the limiting rod after moving to a predetermined position with the meshing transmission device.

[0018] In one embodiment of this disclosure, a reset device is also included; the guide drive shaft is configured to drive the reset device to store energy when rotated in the direction of breakage by an external force, and the reset device is configured to drive the guide drive shaft to reset after the external force is removed.

[0019] In one embodiment of this disclosure, the motion device includes a motor and a drive rope, the drive rope being configured to drive the motor and the guide drive shaft; the motor is configured to drive the guide drive shaft to rotate via the drive rope during rotation.

[0020] In one embodiment of this disclosure, a remote control frame is further included, the remote control frame being disposed at a location remote from the support and configured to be supported on the ground; the drive rope is configured to extend from the location of the motor through the remote control frame to a connection with the guide drive shaft; a slider is slidably connected to the remote control frame, and a manual pull ring is also included, the manual pull ring being configured to pull the slider to move along the height direction on the remote control frame; a guide wheel is provided on the slider, and the drive rope is configured to extend toward the guide drive shaft after passing over the guide wheel.

[0021] One beneficial effect of this disclosure is that, during the preparation phase before the loading and unloading of liquefied petroleum gas tank trucks begins, the driven component in the disengaged position allows operators to easily adjust the relative position of the emergency disconnect system to the tank truck, thus adapting to different tank truck parking situations. Using the emergency disconnect system of this disclosure to control the emergency shut-off valve better protects operators, preventing them from close direct contact with the valve and allowing for a safer disconnection operation from a distance.

[0022] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0024] Figure 1This is a partial structural diagram of the emergency pull-off system disclosed herein;

[0025] Figure 2 This is a schematic diagram of the overall structure of the emergency pull-off system disclosed herein;

[0026] Figure 3 This is an exploded view of the meshing transmission device disclosed herein;

[0027] Figure 4 This is a cross-sectional view of the meshing transmission device disclosed herein;

[0028] Figure 5 This is a cross-sectional view of a portion of the active component disclosed herein;

[0029] Figure 6 This is a cross-sectional view of a portion of the driven component of this disclosure;

[0030] Figure 7 This is a schematic diagram of the active transmission sleeve disclosed in this paper;

[0031] Figure 8 This is a schematic diagram of the driven disk structure disclosed in this publication;

[0032] Figure 9 This is a schematic diagram of the structure of the active transmission sleeve and the driven disc disclosed in this paper;

[0033] Figure 10 This is a schematic diagram of the manual clutch assembly disclosed herein;

[0034] Figure 11 This is a schematic diagram of the structure of the guide drive shaft disclosed herein;

[0035] Figure 12 This is a schematic diagram of the structure of the limit locking device disclosed herein;

[0036] Figure 13 This is a cross-sectional view of the limiting and locking device disclosed herein;

[0037] Figure 14 This is a schematic diagram of the structure of the reset device disclosed herein;

[0038] Figure 15 This is a cross-sectional view of the reset device disclosed herein;

[0039] Figure 16 This is a schematic diagram of the structure of the tension-breaking device disclosed herein;

[0040] Figure 17 This is a schematic diagram of the structure of the motion device disclosed herein;

[0041] Figure 18 This is a schematic diagram of the internal structure of the motion device disclosed herein;

[0042] Figure 19This is a partial structural schematic diagram of the motion device disclosed herein.

[0043] Figures 1 to 19 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0044] 1. Motion device; 11. Motor; 111. Motor drive wheel; 12. Drive rope; 121. Horizontal protective sleeve; 13. Manual assembly; 131. Manual pull ring; 132. Manual rope; 133. Manual rope guide wheel; 134. Manual rope breakage protection sleeve; 135. Slider; 136. Guide wheel; 137. Manual pull ring hanging rod; 14. Remote control frame;

[0045] 2. Bracket; 21. Small drive wheel; 22. Vertical protective sleeve;

[0046] 3. Guide drive shaft; 31. Drive shaft spline;

[0047] 4. Meshing transmission device, 41. Driving component, 411. Driving transmission sleeve, 4111. Driving engagement tooth, 4112. Driving disengagement ramp, 4113. Driving transmission sleeve spline, 412. Thrust bearing, 413. Bearing cover, 414. First fixed seat, 42. Driven component, 421. Driven disc, 4211. Driven engagement tooth, 4212. Driven disengagement ramp, 422. Driven wheel, 4221. Driven wheel groove, 423. Driven transmission sleeve, 4231. Driven transmission sleeve spline, 424. Second fixed seat, 43. Bearing, 44. Connecting bracket, 45. Manual clutch component, 451. Clutch handle, 452. Shift fork, 453. Shift fork shaft, 454. Shift fork wheel, 46. Clutch elastic component, 47. Spring adjusting nut;

[0048] 5. Limit locking device; 51. Locking slider; 511. Limit pin; 512. Locking spring; 513. Limit locking handle; 52. Limit rod.

[0049] 6. Reset device; 61. Reset spring; 62. Valve core rod; 63. Spring outer cylinder; 64. Spring adjusting sleeve; 65. Extrusion piece; 66. Energy storage rope.

[0050] 7. Break the rope;

[0051] 8. Breaking device; 81. Breaking sleeve; 82. Locking screw. Detailed Implementation

[0052] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0053] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0054] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0055] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0056] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0057] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0058] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0059] This disclosure provides an emergency break-off system, including a motion device, a support, a guide drive shaft, a meshing drive mechanism, a break-off rope, and a break-off device. The support is supported on the ground, and the guide drive shaft is rotatably connected to the support. Driven by the motion device, the guide drive shaft can rotate relative to the support and, through the meshing drive mechanism, drives the break-off rope. The break-off device breaks the emergency shut-off valve under the tension of the break-off rope.

[0060] The meshing transmission device includes a driving component and a driven component. The driving component is drivenly connected to a guide drive shaft. When the guide drive shaft rotates relative to the support, the driving component rotates in the same direction as the guide drive shaft. The driven component can move relative to the driving component between an engaged position and a disengaged position. When the driven component is in the engaged position, it is drivenly connected to the driving component, and rotates in the same direction as the driving component rotates with the guide drive shaft. When the driven component is in the disengaged position, it separates from the driving component, and no longer rotates with the driving component when the driving component rotates with the guide drive shaft.

[0061] One end of the break rope is wrapped around the driven assembly, and the other end is fixed to the break-off device. After the tanker truck stops, the break-off device needs to be fixed to the emergency break-off wrench of the emergency shut-off valve. At this time, the driven assembly is in the disengaged position and does not rotate with the driving assembly and the guide drive shaft, so it will not pull the break-off rope. This makes it very convenient to adjust the relative position of the emergency break-off system and the tanker truck, as well as to adjust the tension of the break-off rope.

[0062] When the tanker truck begins loading and unloading, the driven component is in the engaged position. In the event of a liquefied petroleum gas leak, the motion device is quickly activated, and the guide drive shaft drives the active and driven components to rotate together. The pull rope is pulled, and the pull device, driven by the pull rope, pulls off the emergency shut-off valve.

[0063] This disclosure enables the operator to easily adjust the relative position of the emergency disconnect system and the tank truck during the preparation phase before loading and unloading begins, with the driven component in the disengaged position allowing for easy adjustment to accommodate different tank truck parking situations.

[0064] The specific embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0065] refer to Figure 1 and Figure 2 This disclosure provides an emergency breakage system, including a motion device 1, a support 2, a guide drive shaft 3, a meshing drive device 4, a breakage rope 7, and a breakage device 8. For example... Figure 1 As shown, the support 2 can be a frame-like steel frame that can be stably supported on the ground, and the guide drive shaft 3 is configured to be rotatably connected to the support 2 and parallel to the ground. Figure 2 As shown, under the driving action of the motion device 1, the guide drive shaft 3 can rotate relative to the bracket 2. The meshing drive device 4 is sleeved on the guide drive shaft 3. When the guide drive shaft 3 drives the meshing drive device 4 to rotate together, the meshing drive device 4 can pull the break rope 7. The break device 8 breaks the emergency shut-off valve under the pulling force of the break rope 7.

[0066] refer to Figure 4 and Figure 5The meshing transmission device 4 includes a driving component 41 and a driven component 42. The driving component 41 is drivenly connected to the guide drive shaft 3. When the guide drive shaft 3 rotates relative to the bracket 2, the driving component 41 rotates in the same direction as the guide drive shaft 3. The driven component 42 can move relative to the driving component 41 between an engaged position and a disengaged position. When the driven component 42 is in the engaged position, it is drivenly connected to the driving component 41, and rotates in the same direction as the driving component 41. When the driven component 42 is in the disengaged position, it separates from the driving component 41, and no longer rotates when the driving component 41 rotates with the guide drive shaft 3.

[0067] refer to Figure 2 One end of the pull rope 7 is wrapped around the driven component 42, and the other end is fixed to the pull-off device 8. After the tanker truck stops, the pull-off device 8 needs to be fixed to the emergency pull-off wrench of the emergency shut-off valve. At this time, the driven component 42 is in the disengaged position and does not rotate with the driving component 41 and the guide drive shaft 3, so it will not pull the pull rope 7. This makes it very convenient to adjust the relative position of the emergency pull-off system and the tanker truck, as well as to adjust the tension of the pull rope 7.

[0068] When the tanker truck begins loading and unloading, the driven component 42 is in the engaged position. In the event of a liquefied petroleum gas leak, the motion device 1 is activated quickly, and the guide drive shaft 3 drives the active component 41 and the driven component 42 to rotate together. The pull rope 7 is pulled, and the pull-off device 8 is pulled by the pull rope 7, which in turn pulls off the emergency shut-off valve.

[0069] In one embodiment of this disclosure, reference is made to Figures 3 to 9 The active component 41 includes a first fixed base 414, an active transmission sleeve 411, a bearing 43, a thrust bearing 412, and a bearing cover 413. The active transmission sleeve 411 is rotatably connected to the first fixed base 414 via the bearing 43 and the thrust bearing 412, meaning that the active transmission sleeve 411 can rotate relative to the first fixed base 414. The guide transmission shaft 3 is configured to pass through the active transmission sleeve 411, and the active transmission sleeve 411 is drively connected to the guide transmission shaft 3, meaning that when the guide transmission shaft 3 rotates, the active transmission sleeve 411 will rotate with the guide transmission shaft 3.

[0070] A thrust bearing 412 is sleeved on the outside of the drive sleeve 411. The drive sleeve 411 may have a flange structure on its outer side, and the thrust bearing 412 abuts against this flange structure. A bearing cap 413 abuts against the thrust bearing 412. The bearing cap 413 is used to fix the thrust bearing 412, and the thrust bearing 412 allows the drive sleeve 411 to rotate freely relative to the first fixed block 414 while simultaneously pressing it against the drive sleeve 411. The thrust bearing 412 and bearing cap 413 prevent the drive sleeve 411 from moving axially relative to the first fixed block 414.

[0071] The driven assembly 42 includes a driven disk 421. The driving transmission sleeve 411 has multiple driving engagement teeth 4111, and the driven disk 421 has multiple driven engagement teeth 4211. When the driven assembly 42 is in the engaged position, the driving engagement teeth 4111 and the driven engagement teeth 4211 can cooperate, meaning that the driven disk 421 can rotate with the driving transmission sleeve 411 when in the engaged position. When the driven assembly 42 is in the disengaged position, the driving engagement teeth 4111 and the driven engagement teeth 4211 separate, meaning that the driven disk 421 separates from the driving transmission sleeve 411 when in the disengaged position and no longer rotates with the driving transmission sleeve 411.

[0072] The driven assembly 42 also includes a second fixed seat 424 and a driven transmission sleeve 423. The second fixed seat 424 has a through hole into which the driven transmission sleeve 423 passes. The driven transmission sleeve 423 is rotatable relative to the second fixed seat 424 and can also slide axially relative to the second fixed seat 424. The guide drive shaft 3 is configured to pass through the driven transmission sleeve 423, and the driven transmission sleeve 423 is driveably connected to the guide drive shaft 3. That is, when the guide drive shaft 3 rotates, the driven transmission sleeve 423 rotates with the guide drive shaft 3. Furthermore, the driven transmission sleeve 423 can also move between an engaged position and a disengaged position along the axial direction of the guide drive shaft 3.

[0073] The driven assembly 42 also includes a driven wheel 422 and a bearing 43. The driven wheel 422 is fixedly connected to the driven disk 421, and the driven wheel 422 can rotate together with the driven disk 421. Figure 6 As shown, the driven wheel 422 is rotatably connected to the driven transmission sleeve 423 via the bearing 43, meaning that the driven wheel 422 can rotate freely relative to the driven transmission sleeve 423. When the driven disc 421 is in the disengaged position, the driven disc 421 and the driven wheel 422 rotate freely together relative to the driven transmission sleeve 423, meaning that the driven disc 421 is rotatably connected to the driven transmission sleeve 423.

[0074] In this embodiment, the driven wheel 422 has a driven wheel groove 4221, and one end of the breakable rope 7 is fixed and wound around the driven wheel groove 4221. When the driven assembly 42 is in the disengaged position, the driven wheel 422 can rotate freely, making it very convenient to adjust the length and tension of the breakable rope 7. When the driven assembly 42 is in the engaged position, the driven wheel 422 rotates together with the guide drive shaft 3, thereby pulling the breakable rope 7 and driving the breakable device 8 to break the emergency shut-off valve.

[0075] The meshing transmission device 4 also includes a connecting bracket 44, which can be an arched fixed bracket, with one end for connecting to the first fixed seat 414 and the other end for connecting to the second fixed seat 424. In this embodiment, there are two connecting brackets 44, one at the top and one at the bottom, and they do not rotate with the guide transmission shaft 3. The connecting bracket 44 can keep the first fixed seat 414 and the second fixed seat 424 in a relatively stationary state at all times.

[0076] In one embodiment of this disclosure, reference is made to Figures 5 to 7 and Figure 11 The guide drive shaft 3 has a drive shaft spline 31 arranged axially on its outer surface, a drive sleeve spline 4113 arranged axially on its inner surface, and a driven sleeve spline 4231 arranged axially on its inner surface. The drive shaft spline 31 can mate with both the drive sleeve spline 4113 and the driven sleeve spline 4231. The drive sleeve 411 is connected to the guide drive shaft 3 via the drive sleeve spline 4113 and rotates with the guide drive shaft 3. The driven sleeve 423 is connected to the guide drive shaft 3 via the driven sleeve spline 4231 and rotates with the guide drive shaft 3. Furthermore, since the drive shaft spline 31, the drive sleeve spline 4113, and the driven sleeve spline 4231 are all axially arranged splines, both the drive sleeve 411 and the driven sleeve 423 can move along the axial direction of the guide drive shaft 3.

[0077] This allows the driven component 42 to move between the engaged and disengaged positions. During the preparation phase before loading and unloading begins, the driven component 42 in the disengaged position has a freely rotating driven wheel 422. By adjusting the length of the pull rope 7 wound around the driven wheel 422, the operator can easily adjust the relative position of the emergency pull system and the tank truck to adapt to different tank truck parking situations.

[0078] In one embodiment of this disclosure, reference is made to Figure 3 and Figure 4The engagement transmission device 4 also includes a clutch elastic component 46. The clutch elastic component 46 can be a spring sleeved on the outside of the driven transmission sleeve 423. The outer surface of the driven transmission sleeve 423 can have a flange structure, and the clutch elastic component 46 abuts against the flange structure. When the driven component 42 is in the disengaged position, the driven disc 421 separates from the driving transmission sleeve 411, and the driven transmission sleeve 423 moves to the disengaged position along the axial direction of the guide transmission shaft 3. The clutch elastic component 46 is compressed under the thrust of the flange of the driven transmission sleeve 423. When the driven component 42 is in the engaged position, the elastic force of the clutch elastic component 46 is released, and the driven transmission sleeve 423 moves to the engaged position along the direction of the guide transmission shaft 3 under the action of the elastic force. The driven disc 421 engages with the driving transmission sleeve 411 under the action of the elastic force and remains in the engaged position.

[0079] In one embodiment of this disclosure, reference continues to be made to... Figure 3 and Figure 4 The engagement transmission device 4 also includes a spring adjusting nut 47, which is sleeved on the outside of the clutch elastic component 46 and connected to the second fixed seat 424. Tightening the spring adjusting nut 47 adjusts the tightness of the clutch elastic component 46, thus adjusting the engagement axial force between the driven component 42 and the driving component 41. Furthermore, the driven transmission sleeve 423 extends beyond the second fixed seat 424, and the extended portion of the driven transmission sleeve 423 is rotatably sleeved within the spring adjusting nut 47 via a bearing 43. The driven transmission sleeve 423 can rotate freely relative to the spring adjusting nut 47, and turning the spring adjusting nut 47 will not cause the driven transmission sleeve 423 to rotate together.

[0080] In one embodiment of this disclosure, reference is made to Figure 3 , Figure 4 and Figure 10 The engagement transmission device 4 also includes a manual clutch assembly 45, which can drive the driven disc 421 to move towards the disengaged position. In this embodiment, the manual clutch assembly 45 can drive the driven assembly 42 from the engaged position to the disengaged position.

[0081] The manual clutch assembly 45 includes a shift fork shaft 453 that passes through the second fixed base 424 and is rotatable relative to the second fixed base 424. A shift fork 452 is fixedly connected to the shift fork shaft 453 and is rotatable with the shift fork shaft 453. The driven transmission sleeve 423 has two flange structures on its outer surface, and the free end of the shift fork 452 is located between the two flange structures. When the shift fork 452 rotates with the shift fork shaft 453, the free end of the shift fork 452 pushes the flange structure of the driven transmission sleeve 423, thereby causing the driven transmission sleeve 423 to move along the axial direction of the guide transmission shaft 3. A clutch handle 451 is fixed to one end of the shift fork shaft 453. The operator can control the rotation of the shift fork shaft 453 by simply moving the clutch handle 451, thereby causing the driven transmission sleeve 423 to move from the engaged position to the disengaged position. When the operator releases the clutch handle 451, the driven transmission sleeve 423 will move to the engagement position under the elastic force of the clutch elastic component 46, and drive the manual clutch component 45 to reset.

[0082] The manual clutch assembly 45 may also include a shift fork wheel 454, which is rotatably connected to the free end of the shift fork 452. Since the path of the shift fork 452 during movement is curved, while the driven transmission sleeve 423 it pushes moves linearly along the axial direction, significant resistance is generated during the pushing process. However, when the shift fork 452 pushes the driven transmission sleeve 423 through the shift fork wheel 454, the shift fork wheel 454 can rotate, thereby reducing resistance and making it easier to control the manual clutch assembly 45.

[0083] This allows for manual control of the driven component 42 from the engaged position to the disengaged position. The operator only needs to operate the clutch handle 451 to move the driven component 42 to the disengaged position. When it is necessary to adjust the relative position of the emergency disconnect system and the tank truck, or the tension of the disconnect rope 7, the operator only needs to operate the clutch handle 451 to move the driven component 42 to the disengaged position. Then, the driven wheel 422 can be rotated to adjust the length of the disconnect rope 7, adapting to different tank truck parking situations. After adjustment, simply releasing the clutch handle 451 will allow the driven component 42 to move and remain in the engaged position, thus enabling the subsequent disconnect operation.

[0084] In one embodiment of this disclosure, reference is made to Figures 7 to 9The active engagement tooth 4111 has an active disengagement ramp 4112, meaning that the active engagement tooth 4111 is a trapezoidal tooth, and the side surface of each active engagement tooth 4111 is constructed as an active disengagement ramp 4112. The driven engagement tooth 4211 has a driven disengagement ramp 4212, meaning that the driven engagement tooth 4211 is a trapezoidal tooth, and the side surface of each driven engagement tooth 4211 is constructed as a driven disengagement ramp 4212. When the driven assembly 42 is in the engagement position, the active disengagement ramp 4112 and the driven disengagement ramp 4212 cooperate with each other.

[0085] When the driven disc 421 is in the engaged position and experiences a rotational force exceeding a threshold, the driven component 42 can move away from the driving component 41 to the disengaged position. During the actual operation of the emergency disconnect system, the driving torque provided by the motion device 1 may be excessive, causing the guide drive shaft 3 to rotate excessively, thereby causing the driving drive sleeve 411 to rotate excessively. At this time, the driven disc 421 in the engaged position will experience excessive rotational force. If the driven component 42 is not moved to the disengaged position in time, the disconnect device 8 may experience excessive tension, further causing the emergency shut-off valve to continue to be pulled even after it has reached the shut-off position, resulting in damage to the emergency shut-off valve. To avoid affecting the normal operation of the emergency shut-off valve, the driven component 42 needs to be able to automatically move to the disengaged position when subjected to excessive rotational torque.

[0086] The active disengagement ramp 4112 and the driven disengagement ramp 4212 facilitate the separation of the engaging connection between the active component 41 and the driven component 42, because the ramps can convert part of the rotational force they receive into an axial component. When the driven component 42 is subjected to a rotational force greater than a threshold, the driven disengagement ramp 4212 and the active disengagement ramp 4112 generate a large axial component, and the driven disengagement ramp 4212 and the active disengagement ramp 4112 begin to slide relative to each other; the driven component 42 begins to move away from the active component 41 to the disengagement position, and under the action of the driven transmission sleeve 423, the clutch elastic component 46 is compressed. Only when the active transmission sleeve 411 stops rotating will the driven component 42 move back to the engaging position under the elastic force of the clutch elastic component 46.

[0087] This prevents the emergency break-off wrench from being damaged by excessive tension. When the emergency shut-off valve has reached the shut-off position and the driving torque provided by the motion device 1 is too large, the active component 41 and the driven component 42 can automatically separate under the interaction of the active release ramp 4112 and the driven release ramp 4212, thereby preventing the break-off device 8 from being subjected to excessive tension and damaging the emergency shut-off valve.

[0088] In one embodiment of this disclosure, reference is made to Figure 1 , Figure 2, Figure 12 and Figure 13 The emergency pull-out system also includes a limit locking device 5, which includes a limit rod 52 and a locking slider 51. Figure 1 As shown, the limiting rod 52 is fixedly connected to the bracket 2 and is arranged parallel to the guide transmission shaft 3. In this embodiment, the limiting rod 52 is fixed below the guide transmission shaft 3, the upper end of the locking slider 51 is fixedly connected to the meshing transmission device 4, and the lower end has a through hole, which is slidably sleeved on the limiting rod 52. The locking slider 51 can drive the meshing transmission device 4 to slide together along the axial direction of the guide transmission shaft 3.

[0089] like Figure 12 and Figure 13 As shown, the limiting rod 52 has multiple limiting holes, and the locking slider 51 has a limiting pin 511. The outer diameter of the end of the limiting pin 511 is smaller than the inner diameter of the limiting hole, and the end of the limiting pin 511 can be inserted into and locked in the limiting hole. When the meshing transmission device 4 moves to the predetermined position, the locking slider 51 and the limiting rod 52 are locked in this position, that is, the limiting pin 511 is inserted into and locked in the corresponding limiting hole. It should be noted that the predetermined position mentioned above refers to the position reached by the operator after adjusting the position of the meshing transmission device 4 to achieve the most suitable tension and length for breaking the rope 7.

[0090] The locking slider 51 may also include a locking spring 512 and a limiting locking handle 513. The limiting locking handle 513 is fixedly connected to the limiting pin 511, and the locking spring 512 is sleeved on the outside of the limiting pin 511. When no external force is applied, the limiting pin 511 can remain in the position inserted into the locking limiting hole under the elastic force of the locking spring 512, and the locking slider 51 will not slide on the limiting rod 52. When it is necessary to change the position of the locking slider 51 on the limiting rod 52, the locking handle 513 is pulled. The locking handle 513 will cause the limiting pin 511 to disengage from the limiting hole, and the locking spring 512 will deform. At this time, the locking slider 51 can slide freely on the limiting rod 52 until the locking slider 51 slides to a new predetermined position. Then, the locking handle 513 is released, and the limiting pin 511 will be inserted into the limiting hole corresponding to the new position under the elastic force of the locking spring 512.

[0091] This aligns the emergency break wrench on the tank truck with the engagement transmission device 4. The tank truck's parking position is often not fixed. If the emergency break wrench and engagement transmission device 4 are not aligned, the tension of the break rope 7 will be dispersed in other directions, affecting the speed at which the emergency shut-off valve is broken. To ensure the breaking speed, the work done by the tension of the break rope 7 needs to be maximized, which requires aligning the emergency break wrench with the engagement transmission device 4. After the tank truck stops, the operator pulls the locking handle 513, allowing the locking slider 51 to slide on the limit rod 52. The locking slider 51 will cause the engagement transmission device 4 to slide together. When the engagement transmission device 4 slides to the position aligned with the emergency break wrench, the operator releases the locking handle 513, locking the locking slider 51 onto the limit rod 52, thus fixing the engagement transmission device 4 in the aligned position.

[0092] In one embodiment of this disclosure, reference is made to Figure 1 , Figure 2 , Figure 17 and Figure 18 The motion device 1 includes a motor 11 and a drive rope 12, which is connected between the motor 11 and the guide shaft 3. The support 2 includes a small drive wheel 21, which is fixedly connected to the guide shaft 3. When the small drive wheel 21 is subjected to external force, it drives the guide shaft 3 to rotate. The motor 11 includes a motor drive wheel 111, which rotates when the motor 11 is working. One end of the drive rope 12 is wound around the motor drive wheel 111, and the other end is fixed to the small drive wheel 21. When the motor 11 starts working, the motor drive wheel 111 rotates and pulls the drive rope 12, which in turn drives the small drive wheel 21 to rotate, which in turn drives the guide shaft 3 to rotate. The operator can control the emergency pull-out system simply by starting the motor 11. This achieves electric control of the emergency pull-out system.

[0093] In one embodiment of this disclosure, the emergency disconnection system further includes a remote control unit capable of wirelessly communicating with the motor 11. That is, the remote control unit can remotely send operating commands to the motor 11. An operator can stand within the remote control range around the motor 11 and control the motor 11 via the remote control unit, thereby controlling the operation of the emergency disconnection system. This achieves remote control of the emergency disconnection system.

[0094] In one embodiment of this disclosure, reference is made to Figure 2 and Figure 17The emergency pull-out system also includes a remote control frame 14. The remote control frame 14 is supported on the ground and positioned away from the support 2. A motor 11 is fixedly connected to the remote control frame 14, and a drive rope 12 extends from the motor 11 through the remote control frame 14 to connect with the guide drive shaft 3. The distance between the remote control frame 14 and the support 2 is adjustable, with its maximum distance depending on the length of the drive rope 12. This allows the moving device 1 to be moved away from the support 2, enabling the operator to activate the moving device 1 from a position away from the support 2; in other words, it achieves remote control of the emergency pull-out system.

[0095] In one embodiment of this disclosure, reference is made to Figures 17 to 19 The motion device 1 also includes a manual component 13, which includes a manual pull ring 131, a manual rope 132, a manual rope guide wheel 133, a slider 135, a guide wheel 136, and a manual pull ring hanging rod 137. The slider 135 is slidably connected to the remote control frame 14. One end of the manual rope 132 is fixedly connected to the top of the slider 135, and the other end of the manual rope 132 is fixedly connected to the manual pull ring 131. When the manual pull ring 131 is pulled, the slider 135 moves upward along the height direction of the remote control frame 14. The guide wheel 136 is fixedly connected to the slider 135. The drive rope 12 extends past the guide wheel 136 towards the guide drive shaft 3. When the slider 135 slides upward, the guide wheel 136 can pull the drive rope 12. This allows the drive rope 12 to be controlled by pulling the manual pull ring 131, thereby controlling the rotation of the guide drive shaft 3, thus enabling manual control of the emergency pull-off system.

[0096] like Figure 19 As shown, in this embodiment, there are three guide wheels 136 arranged in a triangular planar distribution. The middle guide wheel 136 is fixedly connected to the slider 135, and the other two guide wheels 136 are fixedly connected to the remote control frame 14. The drive rope 12 is configured to first pass over the nearest guide wheel 136 from below, then pass over the guide wheel 136 fixed to the slider 135 from above, and finally pass over the farthest guide wheel 136 from below. That is, only the middle guide wheel 136 can pull the drive rope 12, while the other two guide wheels 136 only serve to limit the movement of the drive rope 12. The guide wheels 136 that can pull the drive rope 12 can also be arranged in many other ways; this disclosure does not impose specific limitations on the specific arrangement of the guide wheels 136.

[0097] like Figure 17 and Figure 18As shown, the manual rope guide wheel 133 and the manual pull ring rod 137 are fixedly connected to the remote control frame 14. The manual rope 132 is configured to pass around the manual rope guide wheel 133, which converts the horizontal tension applied by the manual pull ring 131 to the manual rope 132 into a vertical tension applied by the manual rope 132 to the slider 135. The manual pull ring rod 137 can be a vertical rod with a hook at the top for holding the manual pull ring 131.

[0098] This enables remote control of the emergency shut-off system via electric, remote, and manual methods, allowing operators to choose the appropriate control method based on the situation. The remote shut-off method enhances the operator's working environment, allowing them to control the emergency shut-off valve from a distance from the tank truck. In the event of a leak, the operator is away from the fire or explosion center. Furthermore, operators require a high degree of concentration during loading and unloading, and errors are more likely to occur under stress. The multiple shut-off methods make operation easier; even if the operator fails to pull the manual pull ring 131 due to stress during a leak, they can immediately switch to remote or electric control to shut off the emergency shut-off valve.

[0099] In one embodiment of this disclosure, reference is made to Figure 1 , Figure 2 , Figure 14 and Figure 15 The emergency breakage system also includes a reset device 6. When the guide drive shaft 3 is subjected to an external force from the motion device 1 and rotates in the breakage direction, the guide drive shaft 3 can drive the reset device 6 to store energy; after the external force is removed, the reset device 6 will release the stored energy and drive the guide drive shaft 3 to rotate in the opposite direction. The reset device 6 can be a coil spring, a spring, or other device that can realize the energy storage and reset function, and this disclosure does not limit it.

[0100] In practical applications, when the motor 11 of the motion device 1 rotates forward, it pulls the guide drive shaft 3 to rotate in the breaking direction. After the breaking operation is completed, the motor 11 reverses, and the drive rope 12 is released from the motor drive wheel 111. The guide drive shaft 3 then needs to re-tighten this part of the drive rope 12. The reset device 6 can enable the guide drive shaft 3 to automatically rotate and tighten the drive rope 12 when the motor 11 reverses, and no additional power system is required throughout the process.

[0101] The reset device 6 may include a reset spring 61, a valve core rod 62, a spring outer cylinder 63, a spring adjusting sleeve 64, a pressing element 65, and an energy storage rope 66. One end of the energy storage rope 66 is wound around a small drive wheel 21, and the other end is fixedly connected to the upper end of the valve core rod 62. When the guide drive shaft 3 rotates in the direction of breakage, the small drive wheel 21 rotates accordingly and tightens the energy storage rope 66 upward, causing the energy storage rope 66 to drive the valve core rod 62 upward. The lower end of the valve core rod 62 is fixed to the pressing element 65, which is slidably disposed in the spring outer cylinder 63. The reset spring 61 is sleeved on the outside of the valve core rod 62, located inside the spring outer cylinder 63, above the upper surface of the pressing element 65, and below the lower surface of the spring adjusting sleeve 64. The upper opening of the spring outer cylinder 63 is sleeved on the lower end of the spring adjusting sleeve 64. By changing the length of the spring adjusting sleeve 64 extending into the spring outer cylinder 63, the energy storage intensity of the reset spring 61 can be changed. When the extrusion member 65 is driven upward by the valve core rod 62, it will squeeze the return spring 61, causing the return spring 61 to compress. When the energy storage rope 66 is no longer acted upon by the guide drive shaft 3, the return spring 61 releases the elastic force stored during its compression, the extrusion member 65 moves downward, driving the valve core rod 62 to move downward together. The valve core rod 62 pulls the energy storage rope 66 and drives the small drive wheel 21 to rotate in the opposite direction. The guide drive shaft 3 rotates to reset, thereby tightening the drive rope 12 released by the motor 11 in reverse.

[0102] In one embodiment of this disclosure, reference is made to Figure 1 , Figure 2 , Figure 17 and Figure 18 Protective sleeves can be provided on the outer side of all ropes. Specifically, a horizontal protective sleeve 121 is provided on the outer side of the drive rope 12 located between the remote control frame 14 and the support 2, a vertical protective sleeve 22 is provided on the outer side of the drive rope 12 extending vertically along the support 2, and a manual breakage rope protective sleeve 134 is provided on the outer side of the manual rope 132. The horizontal protective sleeve 121 can be installed on the ground or buried underground, and this disclosure does not impose any restrictions on this. The vertical protective sleeve 22 can be fixedly connected to the support 2, and the manual breakage rope protective sleeve 134 can be fixedly connected to the remote control frame 14.

[0103] In one embodiment of this disclosure, reference is made to Figure 16The breakaway device 8 includes a breakaway sleeve 81 and a locking screw 82. The breakaway sleeve 81 can be fitted onto the emergency breakaway wrench, and the locking screw 82 can lock the breakaway sleeve 81 and the emergency breakaway wrench together. The locking screw 82 can be a screw that penetrates the outer wall of the breakaway sleeve 81. By tightening the locking screw 82, the locking screw 82 can be tightly pressed against the emergency breakaway wrench, thereby achieving the locking function. The breakaway sleeve 81 is controlled by the breakaway rope 7. When the breakaway rope 7 is pulled, the breakaway sleeve 81 will move in the breakaway direction, thereby driving the emergency breakaway wrench to move in the breakaway direction, thereby breaking the emergency shut-off valve.

[0104] The following section will describe in detail how operators can use the emergency pull-off system provided in this disclosure in real-world application scenarios.

[0105] After the LPG tanker truck stops at the loading / unloading position, the operator pulls the limit locking handle 513, causing the locking slider 51 to move the engagement transmission device 4 until the driven wheel 422 in the engagement transmission device 4 aligns with the emergency break wrench on the tanker truck. Then, the operator releases the limit locking handle 513, locking the locking slider 51 onto the limit rod 52, fixing the engagement transmission device 4 in the aligned position. Next, the operator pulls the clutch handle 451, moving the driven component 42 to the disengaged position. Based on the distance between the driven wheel 422 and the emergency break wrench, the operator releases the break rope 7 wrapped around the driven wheel 422 and then releases the clutch handle 451, moving the driven component 42 to the engaged position. Finally, the operator places the break sleeve 81 onto the emergency break wrench and tightens the locking screw 82, fixing the break device 8 onto the emergency break wrench. Finally, the operator pulls the clutch handle 451 again, causing the driven component 42 to move to the disengaged position. The operator then rotates the driven wheel 422 to tighten the snap rope 7 and releases the clutch handle 451, causing the driven component 42 to move to the engaged position. This completes the preparatory work before loading and unloading.

[0106] When the tanker begins loading and unloading liquefied petroleum gas, the operator needs to closely monitor the loading and unloading process. In case of a leak, the operator must immediately activate the motion device 1. The operator can start the motor 11 by pressing the electronic control button, the remote control button, or by pulling the manual pull ring 131. All three methods can activate the drive rope 12. The drive rope 12 will drive the guide drive shaft 3 to rotate, which in turn drives the active drive sleeve 411 to rotate. The driven wheel 422, located in the meshing position, will also rotate, causing the pull rope 7 to snap, which in turn pulls the pull-off device 8 to activate the emergency pull-off wrench, stopping the loading and unloading. Afterwards, the operator controls the motor 11 to reverse, releasing the drive rope 12 from the motor drive wheel 111. The guide drive shaft 3, under the action of the reset device 6, rotates in the reset direction, tightening the drive rope 12.

[0107] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. An emergency breakage system, characterized in that, include: The support (2) is configured to be supported on the ground; A guide drive shaft (3) is rotatably connected to the bracket (2) and is configured to be controlled by the motion device (1) to rotate relative to the bracket (2); A meshing transmission device (4) includes a driven component (42) and a driving component (41) that is drivenly connected to the guide transmission shaft (3). The driving component (41) includes a driving transmission sleeve (411) configured to be drivenly connected to the guide transmission shaft (3), and the driving transmission sleeve (411) is provided with driving engagement teeth (4111). The driven component (42) includes a driven disc (421), and the driven disc (421) is provided with driven engagement teeth (4211). When the driven component (42) is in the meshing position, the driving component... The active engagement tooth (4111) engages with the driven engagement tooth (4211); when in the disengaged position, the active engagement tooth (4111) separates from the driven engagement tooth (4211) and rotates freely relative to the guide drive shaft (3); the driven component (42) is configured to move relative to the active component (41) between the engagement position and the disengaged position; when in the engagement position, the driven component (42) is configured to engage and drive with the active component (41); when in the disengaged position, the driven component (42) is configured to separate from the active component (41); The rope (7) is pulled apart, one end of which is fixed and wrapped around the driven assembly (42), and the other end is configured to be fixed to the pull-off device (8); The limiting locking device (5) includes a limiting rod (52) and a locking slider (51); the limiting rod (52) is configured to be fixedly connected to the bracket (2) and arranged parallel to the guide transmission shaft (3); one end of the locking slider (51) is configured to be fixedly connected to the meshing transmission device (4), and the other end is configured to be sleeved on the limiting rod (52); the locking slider (51) is configured to lock with the limiting rod (52) after moving to a predetermined position with the meshing transmission device (4).

2. The emergency pull-off system according to claim 1, characterized in that, The active component (41) includes a first fixed base (414), the active transmission sleeve (411) is configured to be rotatably connected to the first fixed base (414), and the guide transmission shaft (3) passes through the active transmission sleeve (411) and is connected to the active transmission sleeve (411) in a transmission connection. The driven assembly (42) includes a second fixed seat (424) and a driven transmission sleeve (423) rotatably connected to the second fixed seat (424). The driven disk (421) is rotatably connected to the driven transmission sleeve (423). The driven transmission sleeve (423) is configured to be sleeved on the outside of the guide transmission shaft (3) and is configured to move along the axial direction of the guide transmission shaft (3) to an engagement position and a disengagement position.

3. The emergency pull-off system according to claim 1, characterized in that, The meshing transmission device (4) further includes a clutch elastic component (46); when the driven component (42) is in the meshing position, the driven disc (421) is meshed and connected to the driving transmission sleeve (411) under the elastic force of the clutch elastic component (46); when it is in the disengaged position, the clutch elastic component (46) is compressed, and the driving transmission sleeve (411) separates from the driven disc (421).

4. The emergency pull-off system according to claim 3, characterized in that, The engagement transmission device (4) further includes a manual clutch assembly (45) configured to drive the driven disc (421) to the disengagement position.

5. The emergency pull-off system according to claim 3, characterized in that, The active engagement tooth (4111) has an active disengagement ramp (4112), and the driven engagement tooth (4211) has a driven disengagement ramp (4212). The active disengagement ramp (4112) and the driven disengagement ramp (4212) cooperate with each other. When the driven component (42) is in the engagement position and the rotational torque on the driven disk (421) is greater than a threshold, it moves away from the active component (41) to the disengagement position.

6. The emergency pull-off system according to claim 1, characterized in that, The driven assembly (42) further includes a driven wheel (422) configured to be fixedly connected to the driven disc (421); one end of the pull rope (7) is configured to be fixed and wound around the driven wheel (422).

7. The emergency pull-off system according to claim 1, characterized in that, It also includes a reset device (6); the guide drive shaft (3) is configured to drive the reset device (6) to store energy when it is rotated in the direction of breakage by an external force, and the reset device (6) is configured to drive the guide drive shaft (3) to reset after the external force is removed.

8. The emergency pull-out system according to any one of claims 1 to 7, characterized in that, The motion device (1) includes a motor (11) and a drive rope (12), the drive rope (12) being configured to be connected between the motor (11) and the guide drive shaft (3); the motor (11) is configured to drive the guide drive shaft (3) to rotate via the drive rope (12) during rotation.

9. The emergency pull-off system according to claim 7, characterized in that, It also includes a remote control frame (14) located away from the support (2) and configured to be supported on the ground; a drive rope (12) is configured to extend from the location of the motor (11) through the remote control frame (14) and to connect with the guide drive shaft (3); a slider (135) is slidably connected on the remote control frame (14), and a manual pull ring (131) is also included, which is configured to pull the slider (135) to move along the height direction on the remote control frame (14); a guide wheel (136) is provided on the slider (135), and the drive rope (12) is configured to extend toward the guide drive shaft (3) after passing around the guide wheel (136).

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