Interlock protection system for loading and unloading equipment of trestle

Abstract

The application provides a trestle oil unloading equipment interlocking safety system and relates to the technical field of trestle oil unloading, which comprises a first detection device, a first warning device and a railway car blocking device. The first detection device is arranged on one side of a pedestrian ladder and is used for detecting the reset state of the pedestrian ladder. The first warning device is arranged on the trestle and is signal connected with the first detection device. The railway car blocking device is arranged on the railway and is signal connected with the first detection device and / or the first warning device. The reset state of the pedestrian ladder on the trestle is detected by the first detection device to determine whether the pedestrian ladder is in the retracted state or the used state. When the pedestrian ladder is not reset, it is determined that the oil unloading process has not been completely finished, so the first warning device is controlled to keep warning and reminding the safety personnel, and the railway car blocking device is synchronously controlled to be locked and unable to be lifted, thereby preventing the tank car from moving in advance and avoiding the risk of damaging the trestle and the oil unloading equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of trestle unloading, in particular to a trestle unloading equipment interlocking safety system. BACKGROUND

[0002] The transit oil depot is a railway unloading station for ensuring airport aviation oil supply, and is a key unit for ensuring normal operation of the aviation oil supply chain. The oil unloading mode of the transit oil depot of a certain company is to unloading through railway trestle unloading equipment (piping crane, oil pump, oil collecting pipe, etc.). In the unloading process, the trestle foot ladder, the unloading piping crane and the tank car are in contact, and after the unloading operation is completed, the above-mentioned equipment must be recovered to the position; if the equipment is not effectively returned to the position and is in contact with the tank car, the equipment will be pulled off or even the trestle will be pulled off during the movement of the tank car, which will cause the risk of personnel injury or oil leakage.

[0003] In order to effectively control this risk and avoid abnormal events, according to the actual working condition of the unloading operation, a trestle unloading equipment interlocking safety system is designed. SUMMARY

[0004] The purpose of the present application is to provide a trestle unloading equipment interlocking safety system, which can ensure that various unloading equipment is effectively reset and ensure that the tank car can safely drive away.

[0005] The present application provides a trestle unloading equipment interlocking safety system, which comprises a first detection device, a first warning device and a railway car stopping device, the first detection device is arranged on one side of the foot ladder, and is used for detecting the reset state of the foot ladder; the first warning device is arranged on the trestle and is signal connected with the first detection device; the railway car stopping device is arranged on the railway and is signal connected with the first detection device and / or the first warning device.

[0006] Further, it further comprises a second detection device, the second detection device is arranged on one side of the unloading piping crane, and is used for detecting the reset state of the unloading piping crane; the first warning device is signal connected with the second detection device, and the railway car stopping device is signal connected with the second detection device.

[0007] Further, it further comprises a third detection device, the third detection device is arranged on one side of the anti-falling device, and is used for detecting the reset state of the anti-falling device; the first warning device is signal connected with the third detection device, and the railway car stopping device is signal connected with the third detection device.

[0008] Further, a stop device is arranged outside the trestle fence, and the stop device is arranged on one side of the foot ladder, and the stop device is signal connected with the railway car stopping device; when the stop device closes the foot ladder, the railway car stopping device opens the railway; when the stop device opens the foot ladder, the railway car stopping device closes the railway.

[0009] Further, the number of the first detection devices is two, which are respectively arranged on one side of the stairway ladder of the two side bars; the number of the stop devices is two, which are respectively arranged on one side of the stairway ladder of the two side bars; the number of the third detection devices is two, which are respectively arranged on one side of the anti-falling device of the two side bars.

[0010] Further, the two sides of the stairway are respectively provided with railways, the two ends of the two sides of the railways are respectively connected with the merging tracks through the turnout devices, and the stop devices are signal connected with the turnout devices; when the stop devices close the stairway ladder, the turnout devices open the railway on the side corresponding to the stop devices; when the stop devices open the stairway ladder, the turnout devices close the railway on the side corresponding to the stop devices.

[0011] Further, the first warning device comprises a collection box, the collection box is fixed on the side bar of the stairway, the collection box is provided with warning lights associated with the two first detection devices, the collection box is provided with warning lights associated with the second detection device, and the collection box is provided with warning lights associated with the two third detection devices.

[0012] Further, the first detection device and the second detection device respectively comprise a proximity switch, and the third detection device comprises a travel switch, and the contact of the travel switch is in contact with the steel cable of the anti-falling device.

[0013] Further, the second warning device is arranged in the central control room and is signal connected with the first detection device, the second detection device and the third detection device; the second warning device comprises a plurality of indicator lights, each of the indicator lights is associated with the first detection device, the second detection device and the third detection device on different stairways; when any detection target of the first detection device, the second detection device and the third detection device on the stairway is ectopic, the indicator light of the corresponding stairway on the second warning device is turned on.

[0014] Further, the railway car stopping device comprises a car stopping rod arranged in front and back doors, when the indicator light on the first warning device and / or the second warning device is turned on, the car stopping rod is locked in the state of not being lifted.

[0015] The technical scheme of the present application detects the reset state of the stairway ladder through the first detection device to determine whether the stairway ladder is in the state of being withdrawn or in the state of being used; when the stairway ladder is not reset, it is determined that the oil unloading process is not completely finished, so as to control the first warning device to keep warning and remind the safety personnel, and synchronously control the railway car stopping device to be locked and unable to be lifted, thereby preventing the tank car from moving in advance and avoiding the risk of damaging the stairway and the oil unloading equipment. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0017] Figure 1 Structure diagram of the non-working trestle in the embodiment 1 of the present application;

[0018] Figure 2 Structure diagram of the working trestle in the embodiment 1 of the present application; Figure 1

[0019] Figure 3 Structure diagram of the non-working trestle in the embodiment 1 of the present application;

[0020] Figure 4 Structure diagram of the working trestle in the embodiment 1 of the present application; Figure 3

[0021] Figure 5 Structure diagram of the first warning device of the present application;

[0022] Figure 6 Structure diagram of the second warning device of the present application;

[0023] Figure 7 Structure diagram of the first detection device and the reset of the pedestrian ladder of the present application;

[0024] Figure 8 Structure diagram of the first detection device and the abnormal position of the pedestrian ladder of the present application;

[0025] Figure 9 Structure diagram of the second detection device and the oil unloading crane of the present application;

[0026] Figure 10 Structure diagram of the third detection device and the anti-falling device of the present application;

[0027] Figure 11 Structure diagram of the switching of the turnout device to the trestle side railway in the embodiment 3 of the present application;

[0028] Figure 12 Structure diagram of the switching of the turnout device to the emergency railway in the embodiment 3 of the present application;

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] ​​1 - fence; 2 - trestle; 201 - side rail; 3 - control room; 4 - merging track; 5 - railway; 6 - tank car; 7 - railway car stop; 701 - car stop lever; 8 - first warning device; 801 - junction box; 802 - warning light; 9 - first detection device; 10 - pedestrian stairway; 11 - second detection device; 12 - oil unloading lance; 13 - third detection device; 14 - fall arrestor; 15 - stop device; 16 - turnout device; 17 - second warning device; 1701 - indicator light; 18 - emergency railway. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Example 1

[0035] As Figures 1-5 and Figures 7-8As shown, the present application provides a trestle oil unloading equipment interlocking safety system, which comprises a first detection device 9, a first warning device 8 and a railway car blocking device 7. The first detection device 9 is arranged on one side of a pedestrian ladder 10 and is used to detect the reset state of the pedestrian ladder 10. The first warning device 8 is arranged on the trestle 2 and is signal connected with the first detection device 9. The railway car blocking device 7 is arranged on the railway 5 and is signal connected with the first detection device 9 and / or the first warning device 8.

[0036] Specifically, the trestle 2 is arranged at an oil unloading site position, and the oil unloading site is surrounded by a fence 1. A central control room 3 is built in a certain place in the fence 1. The railway 5 passes through the position where the fence 1 on both sides is opened, and the railway car blocking device 7 is installed on the front and rear doors respectively. The railway car blocking device 7 can be a car blocking rod 701 (up and down rotation for release) arranged on the front and rear doors, or a telescopic door stop arranged on the front and rear doors.

[0037] The trestle 2 is a high-rise building built in the fence 1, and the trestle 2 is connected to the ground by stairs at both ends to go up and down the trestle 2. The trestle 2 is provided with an exit on the side, and the exit is provided with a pedestrian ladder 10. The pedestrian ladder 10 can be rotated to extend or retract, and the extension and retraction of the pedestrian ladder 10 is controlled by a chain (similar to the action of a winch) or other mechanisms. When the tank car 6 travels along the railway 5 to the side of the trestle 2, the pedestrian ladder 10 is lowered to be connected with the corresponding position on the tank car 6. The operator moves between the tank car 6 and the trestle 2 through the pedestrian ladder 10 to connect the oil unloading equipment with the tank car 6 for oil unloading work. When the oil unloading is completed and the tank car 6 is about to leave, the pedestrian ladder 10 needs to be retracted and the oil unloading equipment needs to be disconnected, otherwise the movement of the tank car 6 will damage these structures.

[0038] In the present application, the first detection device 9 is arranged near the pedestrian ladder 10 on the trestle 2 to detect the reset state of the pedestrian ladder 10. When the pedestrian ladder 10 is not extended / retracted, it is considered as the initial position state. At this time, the first detection device 9 is considered as the reset of the pedestrian ladder 10, and the first warning device 8 signal connected therewith (electrical signal or wireless network signal) does not issue warning information. The railway car blocking device 7 is opened, and the tank car 6 can smoothly drive away from the oil unloading site. When the pedestrian ladder 10 is extended / has not been retracted, it is considered as the initial position state. At this time, the first detection device 9 is considered as the dislocation of the pedestrian ladder 10, and the oil unloading work is not completely finished. The first warning device 8 signal connected therewith issues warning information to prompt safety personnel, the railway car blocking device 7 remains closed, and the tank car 6 cannot drive away from the oil unloading site, thereby ensuring the safety of personnel and equipment.

[0039] The control button of the railway car stop device 7 can be arranged in the central control room 3 or arranged at the door side, and the control button is logically associated with the first warning device 8 and the first detection device 9, when the first warning device 8 is in a warning state or the first detection device 9 detects that the personnel ladder 10 is in an abnormal position, the control button is locked and cannot be pressed, and the railway car stop device 7 cannot be lifted.

[0040] The first detection device 9 can be a proximity switch or a travel switch, when the personnel ladder 10 approaches or a certain travel is judged to be reset, otherwise it is judged to be abnormal.

[0041] Embodiment 2

[0042] As Figures 9-10 shown, it also includes a second detection device 11 arranged on one side of the oil unloading crane pipe 12 for detecting the reset state of the oil unloading crane pipe 12; the first warning device 8 is signal connected with the second detection device 11, and the railway car stop device 7 is signal connected with the second detection device 11. It also includes a third detection device 13 arranged on one side of the fall arrestor 14 for detecting the reset state of the fall arrestor 14; the first warning device 8 is signal connected with the third detection device 13, and the railway car stop device 7 is signal connected with the third detection device 13.

[0043] Specifically, during the oil unloading process, the oil unloading crane pipe 12 is adjusted to be connected with the oil tank truck 6 unloading pipeline, if the oil unloading crane pipe 12 is not reset when the oil tank truck 6 drives away, it will cause damage to the crane pipe.

[0044] The oil depot railway unloading area is a special elevated work site, and high-altitude falling accidents are prone to occur. The fall arrestor 14 is a high-altitude falling prevention device, which can help the operator to stand stably when unloading oil, has the functions of positioning and two-hand operation, and can avoid high-altitude falling accidents and protect the operator from injury in case of sudden abnormality or operation error.

[0045] In the present application, the second detection device 11 is arranged near the oil unloading crane pipe 12 on the trestle 2 for detecting the reset state of the oil unloading crane pipe 12, and when the oil unloading crane pipe 12 is not in the unloading position, it is the initial position state, at this time the second detection device 11 is considered as the reset of the oil unloading crane pipe 12; when the oil unloading crane pipe 12 is in the unloading position, it is an abnormal position, at this time the second detection device 11 is considered as the abnormal position of the oil unloading crane pipe 12;

[0046] The third detection device 13 is arranged near the steel cable of the fall arrestor 14 on the trestle 2 for detecting the safety state of the fall arrestor 14, and when the steel cable of the fall arrestor 14 is normal without change, it is the initial position state, at this time the third detection device 13 is considered as the reset of the fall arrestor 14; when the steel cable of the fall arrestor 14 is suddenly tightened and changed, it is an abnormal action, at this time the third detection device 13 is considered as the start of the fall arrestor 14, and the elevated work is abnormal;

[0047] If the first detection device 9, the second detection device 11 and the third detection device 13 detect that the target is reset at the same time, the first warning device 8 connected to the signal (electrical signal or wireless network signal) does not issue a warning message, the railway vehicle blocking device 7 opens, and the tank truck 6 can smoothly leave the oil unloading site.

[0048] If any of the first detection device 9, the second detection device 11 and the third detection device 13 detects that the target is out of position, it is deemed that the oil unloading work has not been completely completed. The first warning device 8 connected to its signal (electrical signal or wireless network signal) sends a warning message to alert the safety personnel, the railway vehicle blocking device 7 remains closed, and the tank truck 6 cannot leave the oil unloading site, thereby ensuring the safety of personnel and equipment.

[0049] Example 3

[0050] like Figures 11-12 As shown, a stopper 15 is provided on the side rails 201 of the trestle 2, and the stopper 15 is located on one side of the pedestrian ladder 10. The stopper 15 is signal-connected to the railway vehicle stopper 7. When the stopper 15 closes the pedestrian ladder 10, the railway vehicle stopper 7 opens the railway 5. When the stopper 15 opens the pedestrian ladder 10, the railway vehicle stopper 7 closes the railway 5. There are two first detection devices 9, one on each side of the pedestrian ladder 10 on the side rails 201 of the trestle 2; there are two stopper devices 15, one on each side of the pedestrian ladder 10 on the side rails 201 of the trestle 2; and there are two third detection devices 13, one on each side of the fall arrester 14 on the side rails 201 of the trestle 2. Railways 5 are provided on both sides of the trestle 2, and the two ends of the railways 5 on both sides are connected to the merged track 4 through a switch device 16, and the stop device 15 is signal-connected to the switch device 16; when the stop device 15 closes the pedestrian ladder 10, the switch device 16 opens the railway 5 on the side corresponding to the stop device 15; when the stop device 15 opens the pedestrian ladder 10, the switch device 16 closes the railway 5 on the side corresponding to the stop device 15.

[0051] Specifically, in some cases, such as when the pedestrian ladder 10 needs to be extended during maintenance work, if the oil tanker 6 enters the oil unloading site at this time, it may also cause a dangerous situation.

[0052] In this embodiment, a stop device 15 is provided at the pedestrian ladder 10 outside the side railing 201 of the pier 2. The stop device 15 can specifically be an L-shaped structure barrier rod (similar to a door lock) that is automatically rotated by a motor or hydraulic drive. When the barrier rod is rotated to the outside of the pedestrian ladder 10, it blocks and closes the pedestrian ladder 10 so that it cannot be released. Conversely, when the barrier rod is rotated to leave the outside of the pedestrian ladder 10, the pedestrian ladder 10 is opened and can be released.

[0053] The switch device 16 is commonly seen on the railway 5 and is used to switch the train to different tracks. The switch device 16 can be an automatic switch device 16 controlled by an electric motor or hydraulic pressure, and is provided with a controller which is logically associated with the stop device 15.

[0054] When the tank car 6 travels along the combined track 4 to the vicinity of the oil unloading station, the switch device 16 needs to choose to divert the tank car 6 to the left or right railway 5 of the trestle 2. At this time, if the stop device 15 on the right side of the trestle 2 is in the position to open the pedestrian ladder 10, it is considered that the right railway 5 already has a tank car 6 or is under maintenance. Then, the railway car stop device 7 corresponding to the right railway 5 closes the railway 5, and the switch device 16 stops switching to the right railway 5, diverting the incoming tank car 6 to the railway 5 on the left side of the trestle 2 to avoid collision or injury to staff. Conversely, if the stop device 15 on the left side of the trestle 2 is in the position to open the pedestrian ladder 10, the switch device 16 stops switching to the left railway 5, diverting the incoming tank car 6 to the railway 5 on the right side of the trestle 2.

[0055] In addition, in this embodiment, an emergency railway 18 can also be set between the two inner railways 5 in the station. The emergency railway 18 is generally vacant. Only when the stop devices 15 on the left and right sides of the trestle 2 are in the position of opening the pedestrian steps 10, it means that the railways 5 on the left and right sides of the trestle 2 are inaccessible. The switch device 16 closes the function of switching to the left and right side railways 5, and the upcoming tank truck 6 is cut onto the emergency railway 18. After the left and right side tank trucks 6 have finished unloading the oil, the tank truck 6 on the emergency railway 18 reverses and then cuts into the left and right side railways 5 to unload the oil.

[0056] Example 4

[0057] like Figures 1-5 As shown, the first warning device 8 includes a junction box 801, which is fixed on the siderail 201 of the pier 2. The junction box 801 is provided with a warning light 802 associated with the two first detection devices 9, the junction box 801 is provided with a warning light 802 associated with the second detection device 11, and the junction box 801 is provided with a warning light 802 associated with the two third detection devices 13.

[0058] Specifically, five warning lights 802 are provided on the junction box 801. A wiring port is provided at the bottom of the junction box 801 to access the signal lines of each detection device, two of which are respectively associated with the first detection device 9 on both sides of the trestle 2, two of which are respectively associated with the second detection device 11 on both sides of the trestle 2, and the remaining one is associated with the third detection device 13 on the trestle 2. When any warning light 802 is on, it is determined that the work on the trestle 2 is not completed, and the railway car blocking device 7 remains closed; when all warning lights 802 are off, it is determined that the work on the trestle 2 is completed, and the railway car blocking device 7 can be opened.

[0059] Embodiment 5

[0060] The first detection device 9 and the second detection device 11 respectively comprise proximity switches, and the third detection device 13 comprises a travel switch, the contact of the travel switch being in contact with a steel cable of the fall arrestor 14.

[0061] Specifically, the first detection device 9 is a proximity switch, and whether the pedestrian ladder 10 is reset is determined by judging the distance between the detection target pedestrian ladder 10 and the proximity switch. The second detection device 11 is a travel switch, the contact of which is in direct contact with the steel cable of the fall arrestor 14. When the fall arrestor 14 does not act, the tension and posture of the steel cable remain unchanged, and the travel of the travel switch contact is unchanged. When the fall arrestor 14 acts, the tension and posture of the steel cable change, and the travel of the travel switch contact changes suddenly, so as to be regarded as an abnormal situation, and the corresponding warning light 802 of the first warning device 8 lights up.

[0062] Embodiment 6

[0063] As shown in Figures 1-6 The second warning device 17 is further included, which is arranged in the control room 3 and is in signal connection with the first detection device 9, the second detection device 11 and the third detection device 13. The second warning device 17 comprises a plurality of indicator lights 1701, each of which is associated with the first detection device 9, the second detection device 11 and the third detection device 13 on a different stack bridge 2. When any detection target of the first detection device 9, the second detection device 11 and the third detection device 13 on the stack bridge 2 is abnormal, the indicator light 1701 corresponding to the stack bridge 2 on the second warning device 17 is turned on.

[0064] Specifically, the second warning device 17 is arranged in the control room 3 of the oil unloading site, and the difference between the second warning device 17 and the first warning device 8 is that the second warning device 17 directly displays whether there is abnormal information on different stack bridges 2. For example, when there is a warning light 802 on the first warning device 8 on the first stack bridge 2, and there is no warning light 802 on the second stack bridge 2, the indicator light 1701 corresponding to the first stack bridge 2 on the second warning device 17 lights up, and the indicator light 1701 corresponding to the second stack bridge 2 is extinguished, and then the railway car stop device 7 at both ends of the first stack bridge 2 is kept closed, and the railway car stop device 7 at both ends of the second stack bridge 2 can be normally opened.

[0065] When the indicator light 1701 on the second warning device 17 lights up, the staff in the control room 3 can inform the staff on the corresponding stack bridge 2 to observe the warning light 802 on the first warning device 8, and then judge and eliminate the abnormal situation.

[0066] Working mode and principle of the application:

[0067] The first detection device 9 detects the reset state of the foot ladder 10, the second detection device 11 detects the reset state of the oil unloading crane 12, and the third detection device 13 detects the reset state of the anti-falling device 14. When any detection device detects that the target is not reset, the first warning device 8 and the second warning device 17 are lighted to warn, the railway car stop device 7 is locked to prevent release, and the safety of the trestle 2 and the oil unloading equipment is ensured. The stop device 15 judges the retracting and releasing state of the foot ladder 10, and then the associated pull-off device 16 cuts the incoming tank car 6 to the side of the trestle 2.

[0068] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An interlocking safety system for trestle oil unloading equipment, characterized in that: It includes a first detection device, a first warning device and a railway vehicle blocking device, wherein the first detection device is arranged on one side of the pedestrian ladder and is used to detect the reset state of the pedestrian ladder; The first warning device is arranged on the trestle and is signal-connected to the first detection device; The railway vehicle blocking device is arranged on the railway and is signal-connected to the first detection device and the first warning device; The system further includes a second detection device, which is arranged on one side of the oil unloading crane pipe and is used to detect the reset state of the oil unloading crane pipe; the first warning device is connected to the second detection device by signal, and the railway vehicle blocking device is connected to the second detection device by signal; The invention also includes a third detection device, which is arranged on one side of the anti-fall device and is used to detect the reset state of the anti-fall device; the first warning device is connected to the third detection device by signal, and the railway vehicle blocking device is connected to the third detection device by signal; A stop device is provided outside the trestle side railing, and the stop device is provided on one side of the pedestrian ladder, and the stop device is connected to the railway car blocking device by signal; when the stop device closes the pedestrian ladder, the railway car blocking device opens the railway; when the stop device opens the pedestrian ladder, the railway car blocking device closes the railway; There are railways on both sides of the trestle, and the two ends of the railways on both sides are connected to the merged track through a switch device, and the stop device is signal-connected to the switch device; when the stop device closes the pedestrian ladder, the switch device opens the railway to the side corresponding to the stop device; when the stop device opens the pedestrian ladder, the switch device closes the railway to the side corresponding to the stop device.

2. The interlocking safety system for trestle oil unloading equipment according to claim 1 is characterized in that: There are two first detection devices, which are respectively arranged on one side of the pedestrian ladder on both side rails of the pier; there are two stop devices, which are respectively arranged on one side of the pedestrian ladder on both side rails of the pier; there are two third detection devices, which are respectively arranged on one side of the fall arrester on both side rails of the pier.

3. The interlocking safety system for trestle oil unloading equipment according to claim 1, characterized in that: The first warning device includes a junction box, which is fixed on the side rail of the pier. The junction box is provided with warning lights associated with the two first detection devices, the junction box is provided with warning lights associated with the second detection device, and the junction box is provided with warning lights associated with the two third detection devices.

4. The interlocking safety system for trestle oil unloading equipment according to claim 1, characterized in that: The first detection device and the second detection device respectively include a proximity switch, and the third detection device includes a travel switch, wherein the contact of the travel switch is in contact with the steel cable of the fall arrester.

5. The interlocking safety system for trestle oil unloading equipment according to claim 1, characterized in that: Also included is a second warning device, which is disposed in the central control room and is signal-connected to the first detection device, the second detection device, and the third detection device; The second warning device includes a plurality of indicator lights, each of which is respectively associated with the first detection device, the second detection device and the third detection device on a different trestle; When any detection target of the first detection device, the second detection device and the third detection device on the trestle is out of position, the indicator light of the corresponding trestle on the second warning device is turned on.

6. The interlocking safety system for trestle oil unloading equipment according to claim 5, characterized in that: The railway vehicle blocking device includes a vehicle blocking rod arranged at the front and rear gates. When the indicator light on the first warning device and / or the second warning device is turned on, the vehicle blocking rod is locked in a non-lifted state.

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