Interlocking safety system of trestle oil discharge equipment

Abstract

The invention provides a trestle oil discharge equipment interlocking safety system, and relates to the technical field of trestle oil discharge, the trestle oil discharge equipment interlocking safety system comprises a first detection device, a first warning device and a railway vehicle stopping device, the first detection device is arranged on one side of a pedestrian step ladder and is used for detecting the reset state of the pedestrian step ladder; the first warning device is arranged on a trestle and is in signal connection with the first detection device; and the railway vehicle stopping device is arranged on the railway and is in signal connection with the first detection device and / or the first warning device. The first detection device is used for detecting the reset state of the pedestrian step ladder on the trestle so as to judge whether the pedestrian step ladder is in a retracted state or a used state; when the pedestrian step ladder is not reset, it is judged that the oil discharging process is still not completely finished, and therefore the first warning device is controlled to keep warning to remind safety personnel, the railway vehicle stopping device is synchronously controlled to be locked and cannot be lifted, an oil tank vehicle can be prevented from moving in advance, and the risk event that a trestle and oil discharging equipment are damaged is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of trestle oil unloading, in particular to an interlocking insurance system for trestle oil unloading equipment. Background Art

[0002] The transfer oil depot is a railway oil unloading station that guarantees the supply of aviation fuel to the airport, and is a key unit to ensure the normal operation of the aviation fuel supply chain. The oil loading and unloading method of a company's transfer oil depot is to load and unload through the railway trestle oil unloading equipment (crane pipe, oil pump, oil collecting pipe, etc.). During the loading and unloading process, the trestle pedestrian ladder, oil unloading crane pipe and tank truck are in contact. After the unloading operation is completed, the above equipment must be recovered in place; if the equipment is not effectively in place and is in contact with the tank truck, it will cause damage to the equipment or even the trestle during the movement of the tank truck, resulting in risks such as personal injury or oil leakage.

[0003] In order to effectively manage this risk and avoid the occurrence of abnormal events, an interlocking insurance system for the pier oil unloading equipment was designed based on the actual working conditions of the oil unloading operation. Summary of the invention

[0004] The purpose of the present invention is to provide an interlocking safety system for trestle oil unloading equipment, which can ensure that various oil unloading equipment can be effectively reset and that tank trucks can safely leave.

[0005] The present invention provides an interlocking insurance system for trestle oil unloading equipment, comprising a first detection device, a first warning device and a railway car blocking device, wherein the first detection device is arranged on one side of a 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 connected to the first detection device by signal; the railway car blocking device is arranged on the railway and is connected to the first detection device and / or the first warning device by signal.

[0006] Furthermore, it also 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.

[0007] Furthermore, it also includes a third detection device, which is arranged on one side of the fall arrester and is used to detect the reset state of the fall arrester; 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.

[0008] Furthermore, a stop device is provided outside the trestle side railing, and the stop device is arranged on one side of the pedestrian ladder, and the stop device is signal-connected with the railway car blocking device; 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.

[0009] Furthermore, the number of the first detection devices is two, which are respectively arranged on one side of the pedestrian ladder on both side rails of the pier; the number of the stop devices is two, which are respectively arranged on one side of the pedestrian ladder on both side rails of the pier; the number of the third detection devices is two, which are respectively arranged on one side of the fall arrester on both side rails of the pier.

[0010] Furthermore, railways are provided on both sides of the trestle, and both ends of the railways on both sides are connected to the merged track through a switch device, and the stop device is signal-connected with 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.

[0011] Furthermore, the first warning device includes a junction box, which is fixed on the side rail of the pier, and is provided with warning lights associated with the two first detection devices, the junction box is provided with a warning light associated with the second detection device, and the junction box is provided with warning lights associated with the two third detection devices.

[0012] Furthermore, the first detection device and the second detection device include proximity switches respectively, and the third detection device includes a travel switch, and the contact of the travel switch is in contact with the steel cable of the fall arrester.

[0013] Furthermore, it also includes a second warning device, which 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 includes multiple indicator lights, each of which is respectively associated with the first detection device, the second detection device and the third detection device on different piers; when any detection target of the first detection device, the second detection device and the third detection device on the pier is out of position, the indicator light corresponding to the pier on the second warning device is turned on.

[0014] Furthermore, the railway vehicle blocking device includes a vehicle blocking rod arranged on the front and rear gates, and when an 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.

[0015] The technical solution of the present invention detects the reset state of the pedestrian ladder on the trestle through a first detection device to determine whether the pedestrian ladder is in a retracted state or in use state; when the pedestrian ladder is not reset, it is determined that the oil unloading process has not yet been completely completed, thereby controlling the first warning device to keep warning and reminding the safety personnel, and synchronously controlling the railway car blocking device to be locked and unable to be lifted, thereby preventing the oil tank truck from moving prematurely and avoiding the risk of damaging the trestle and the oil unloading equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the trestle not working in embodiment 1 of the present invention;

[0018] Figure 2 For the present invention Figure 1 A magnified image of point A;

[0019] Figure 3 It is a structural schematic diagram of the operation of the trestle in embodiment 1 of the present invention;

[0020] Figure 4 For the present invention Figure 3 A magnified view of point B;

[0021] Figure 5 is a schematic diagram of a first warning device of the present invention;

[0022] Figure 6 is a schematic diagram of a second warning device of the present invention;

[0023] Figure 7 It is a schematic diagram of the first detection device and the reset of the pedestrian ladder of the present invention;

[0024] Figure 8 It is a schematic diagram of the first detection device and the pedestrian ladder misalignment of the present invention;

[0025] Fig. 9 It is a schematic diagram of the second detection device and the oil unloading crane pipe of the present invention;

[0026] Fig.10 It is a schematic diagram of a third detection device and a fall arrester of the present invention;

[0027] Fig.11 This is a schematic diagram of the switch device switching to the railway on the side of the trestle in Example 3 of the present invention;

[0028] Fig.12 This is a schematic diagram of the switch device switching to the emergency railway in Example 3 of the present invention;

[0029] Description of reference numerals:

[0030] 1-wall; 2-trestle; 201-siderail; 3-control room; 4-merged track; 5-railway; 6-tank car; 7-railway car blocking device; 701-car blocking rod; 8-first warning device; 801-junction box; 802-warning light; 9-first detection device; 10-pedestrian step ladder; 11-second detection device; 12-oil unloading crane pipe; 13-third detection device; 14-fall arrester; 15-stop device; 16-switch device; 17-second warning device; 1701-indicator light; 18-emergency railway. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] like Figure 1-Figure 5 and Figure 7-Figure 8As shown, the present invention provides an interlocking safety system for trestle oil unloading equipment, comprising a first detection device 9, a first warning device 8 and a railway car blocking device 7, wherein the first detection device 9 is arranged on one side of the 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 connected to the first detection device 9 by signal; the railway car blocking device 7 is arranged on the railway 5, and is connected to the first detection device 9 and / or the first warning device 8 by signal.

[0036] Specifically, the trestle 2 is arranged at the oil unloading site, and the oil unloading site is surrounded by a wall 1, and the central control room 3 is built somewhere inside the wall 1. The oil tanker 6 rail 5 passes through the wall 1 on both sides and has a door, and the front and rear doors are respectively equipped with a rail car blocking device 7. The rail car blocking device 7 can be a car blocking rod 701 (rotated up and down to release) arranged at the front and rear gates, or a telescopic door block arranged at the front and rear gates.

[0037] The trestle 2 is a high platform building, built inside the enclosure 1, and the two ends of the trestle 2 are connected to the ground through stairs. An exit is provided on the side of the trestle 2, and a pedestrian step ladder 10 is provided at the exit. The pedestrian step ladder 10 can be rotated to extend or retract, and the retraction and extension of the pedestrian step ladder 10 is controlled by a chain (similar to the action of a winch) or other machinery. When the tank truck 6 travels along the railway 5 to the side of the trestle 2, the pedestrian step ladder 10 is put down and overlapped with the corresponding position on the tank truck 6. The operator moves between the tank truck 6 and the trestle 2 through the pedestrian step ladder 10, and connects the oil unloading equipment with the tank truck 6 to unload the oil; when the tank truck 6 is about to leave after unloading the oil, it is necessary to put away the pedestrian step ladder 10 and disconnect the oil unloading equipment, otherwise the movement of the tank truck 6 will damage these structures.

[0038] In the present invention, a first detection device 9 is provided near the pedestrian ladder 10 on the trestle 2 to detect the reset state of the pedestrian ladder 10. The pedestrian ladder 10 is not extended / retracted as the initial position state. At this time, the first detection device 9 regards the pedestrian ladder 10 as reset, and the first warning device 8 connected to it by signal (electric signal or wireless network signal) does not send out a warning message. The railway car blocking device 7 is opened, and the tank truck 6 can smoothly leave the oil unloading site. The pedestrian ladder 10 is extended / not retracted as the initial position state. At this time, the first detection device 9 regards the pedestrian ladder 10 as out of position, and the oil unloading work has not been completely completed. The first warning device 8 connected to it by signal sends out a warning message to remind the safety personnel, the railway car blocking device 7 remains closed, and the tank truck 6 cannot leave the oil unloading site, thereby ensuring the safety of personnel and equipment.

[0039] The control button for controlling the railway car blocking device 7 can be set in the central control room 3 or at the doorside. 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 pedestrian step 10 is out of position, the control button is locked and cannot be pressed, and the railway car blocking device 7 cannot be lifted.

[0040] The first detection device 9 may be a proximity switch or a travel switch. When the pedestrian ladder 10 approaches or reaches a certain travel distance, it is determined to be reset, otherwise it is determined to be out of position.

[0041] Example 2

[0042] like Figure 9-10 As shown, it also includes a second detection device 11, which is arranged on one side of the oil unloading crane pipe 12 and is used to detect the reset state of the oil unloading crane pipe 12; the first warning device 8 is connected to the second detection device 11 by signal, and the railway vehicle blocking device 7 is connected to the second detection device 11 by signal. It also includes a third detection device 13, which is arranged on one side of the anti-fall device 14 and is used to detect the reset state of the anti-fall device 14; the first warning device 8 is connected to the third detection device 13 by signal, and the railway vehicle blocking device 7 is connected to the third detection device 13 by signal.

[0043] Specifically, during the oil unloading process, the oil unloading crane pipe 12 is adjusted to be connected to the oil unloading pipeline of the tank truck 6. If the oil unloading crane pipe 12 is not reset when the tank truck 6 leaves, the crane pipe will be damaged.

[0044] The railway loading and unloading area of ​​the oil depot is a special high-altitude operation site, which is prone to high-altitude falling accidents. The fall arrester 14 is a high-altitude falling prevention device that can help operators stand firmly when loading and unloading oil products, has the functions of positioning and two-hand operation, and can avoid high-altitude falling accidents in the event of sudden abnormalities or operating errors, so that operators are protected from injury.

[0045] In the present invention, a second detection device 11 is arranged near the oil unloading crane pipe 12 on the trestle 2 to detect the reset state of the oil unloading crane pipe 12. When the oil unloading crane pipe 12 is not in the oil unloading position, it is the initial position state. At this time, the second detection device 11 regards the oil unloading crane pipe 12 as reset; when the oil unloading crane pipe 12 is in the oil unloading position, it is the out-of-position state. At this time, the second detection device 11 regards the oil unloading crane pipe 12 as out-of-position.

[0046] A third detection device 13 is provided near the steel cable of the fall arrester 14 on the trestle 2 to detect the safety state of the fall arrester 14. The steel cable of the fall arrester 14 is normal and unchanged as the initial position state, at which time the third detection device 13 regards the fall arrester 14 as reset; the steel cable of the fall arrester 14 is suddenly tightened as an out-of-position action, at which time the third detection device 13 regards the fall arrester 14 as activated, and the climbing operation 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 send out 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 one 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 Figure 11-Figure 12 As shown, a stopper 15 is provided outside the side rails 201 of the trestle 2, and the stopper 15 is arranged on one side of the pedestrian step ladder 10, and the stopper 15 is connected to the railway car blocking device 7 by signal; when the stopper 15 closes the pedestrian step ladder 10, the railway car blocking device 7 opens the railway 5; when the stopper 15 opens the pedestrian step ladder 10, the railway car blocking device 7 closes the railway 5. The number of the first detection device 9 is two, which are respectively arranged on one side of the pedestrian step ladder 10 of the two side rails 201 of the trestle 2; the number of the stopper 15 is two, which are respectively arranged on one side of the pedestrian step ladder 10 of the two side rails 201 of the trestle 2; the number of the third detection device 13 is two, which are respectively arranged on one side of the fall arrester 14 of the two side rails 201 of the trestle 2. Railways 5 are provided on both sides of the trestle 2, and both 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 with 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 maintenance work, the pedestrian ladder 10 needs to be extended. At this time, if the oil tanker 6 enters the oil unloading site, 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 rail 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, the pedestrian ladder 10 is blocked and closed 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 a motor or hydraulic pressure, and a controller is provided thereon and is logically associated with the stop device 15 .

[0054] When the tank car 6 travels along the merged track 4 to the vicinity of the oil unloading site, the switch device 16 needs to choose to cut the tank car 6 to the left railway 5 or the 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 of opening the pedestrian step 10, it is considered that the right railway 5 has a tank car 6 or is in a maintenance working state, then the railway car blocking device 7 corresponding to the right railway 5 closes the railway 5, and the switch device 16 closes the function of switching to the right railway 5, and the upcoming tank car 6 is cut to the railway 5 on the left side of the trestle 2 to avoid collision or injury to staff. On the contrary, if the stop device 15 on the left side of the trestle 2 is in the position of opening the pedestrian step 10, the switch device 16 closes the function of switching to the left railway 5, and the upcoming tank car 6 is cut to the railway 5 on the right side of the trestle 2.

[0055] In addition, in the present embodiment, an emergency railway 18 can also be provided between the two inner railways 5 in the station. The emergency railway 18 is generally vacant. Only when, for example, 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 tank trucks 6 on the left and right sides have finished unloading the oil, the tank trucks 6 on the emergency railway 18 reverse and then cut into the left and right side railways 5 to unload the oil.

[0056] Example 4

[0057] like Figure 1-Figure 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 arranged on the junction box 801, and a wiring port is arranged 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, the other two 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 judged that the work on the trestle 2 is not finished, and the railway car blocking device 7 remains closed; when all warning lights 802 are off, it is judged that the work on the trestle 2 is finished, and the railway car blocking device 7 can be opened.

[0059] Example 5

[0060] The first detection device 9 and the second detection device 11 include proximity switches respectively, and the third detection device 13 includes a travel switch, the contact of which is in contact with the steel cable of the fall arrester 14 .

[0061] Specifically, the first detection device 9 is a proximity switch, which determines whether the pedestrian step 10 is reset by determining the distance between the detection target pedestrian step 10 and the proximity switch. The second detection device 11 is a travel switch, whose contact is in direct contact with the steel cable of the anti-fall device 14. When the anti-fall device 14 is not in effect, the tension and posture of the steel cable are maintained, and the travel change of the contact of the pressure travel switch remains unchanged; when the anti-fall device 14 is in effect, the tension and posture of the steel cable change, and the travel of the contact of the pressure travel switch changes suddenly, which is regarded as an abnormal situation, and the corresponding warning light 802 on the first warning device 8 lights up.

[0062] Example 6

[0063] like Figure 1-Figure 6 As shown, it also includes a second warning device 17, which is arranged in the central control room 3 and is signal-connected with the first detection device 9, the second detection device 11 and the third detection device 13; the second warning device 17 includes a plurality of indicator lights 1701, and each indicator light 1701 is respectively associated with the first detection device 9, the second detection device 11 and the third detection device 13 on different piers 2; when any detection target of the first detection device 9, the second detection device 11 and the third detection device 13 on the pier 2 is out of position, the indicator light 1701 corresponding to the pier 2 on the second warning device 17 is turned on.

[0064] Specifically, the second warning device 17 is arranged in the central control room 3 of the oil unloading station. Different from the first warning device 8, the second warning device 17 directly displays whether there are abnormal information on different multiple trestle bridges 2. For example, when there is a lighted warning light 802 on the first warning device 8 on the No. 1 trestle bridge 2, and there is no lighted warning light 802 on the No. 2 trestle bridge 2, the indicator light 1701 on the second warning device 17 corresponding to the No. 1 trestle bridge 2 is lit, and the indicator light 1701 corresponding to the No. 2 trestle bridge 2 is extinguished, and then the railway car blocking device 7 at both ends of the No. 1 trestle bridge 2 is controlled to remain closed, while the railway car blocking device 7 at both ends of the No. 2 trestle bridge 2 can be opened normally.

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

[0066] Working mode and principle of the present invention:

[0067] The reset state of the pedestrian step ladder 10 is detected by the first detection device 9, the reset state of the oil unloading crane pipe 12 is detected by the second detection device 11, and the reset state of the fall arrester 14 is detected by the third detection device 13. When any detection device detects that the target has not been reset, the first warning device 8 and the second warning device 17 light up to warn, and the railway vehicle blocking device 7 is locked and cannot be released, thereby ensuring the safety of the trestle 2 and the oil unloading equipment. The retracted state of the pedestrian step ladder 10 is determined by the stop device 15, and then the associated switch device 16 cuts the incoming oil tanker 6 to make it cut into the idle 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 invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

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 step ladder and is used to detect the reset state of the pedestrian step ladder; The first warning device is arranged on the trestle and is connected to the first detection device by signal; The railway vehicle blocking device is arranged on the railway and is connected to the first detection device and / or the first warning device by signal.

2. The interlocking safety system for pier oil unloading equipment according to claim 1 is characterized in that: It also 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.

3. The interlocking safety system for pier oil unloading equipment according to claim 2 is characterized in that: It also includes a third detection device, which is arranged on one side of the fall arrester and is used to detect the reset state of the fall arrester; 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.

4. The interlocking safety system for pier oil unloading equipment according to claim 2 is characterized in that: A stop device is provided outside the trestle side railing, and the stop device is arranged on one side of the pedestrian step ladder, and the stop device is connected to the railway vehicle blocking device by signal; When the stop device closes the pedestrian ladder, the railway vehicle blocking device opens the railway; When the stop device opens the pedestrian ladder, the railway vehicle blocking device closes the railway.

5. The interlocking safety system for pier oil unloading equipment according to claim 4 is characterized in that: There are two first detection devices, which are respectively arranged on one side of the pedestrian ladder of the two side rails of the pier; there are two stop devices, which are respectively arranged on one side of the pedestrian ladder of the two side rails of the pier; there are two third detection devices, which are respectively arranged on one side of the fall arrester of the two side rails of the pier.

6. The interlocking safety system for pier oil unloading equipment according to claim 5 is characterized in that: Railways are provided on both sides of the trestle, and both ends of the railways on both sides are connected to the merging track through switch devices, and the stop device is connected to the switch device by signal; 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.

7. The interlocking safety system for pier oil unloading equipment according to claim 4 is 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.

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

9. The interlocking safety system for pier oil unloading equipment according to claim 4, characterized in that: It also includes a second warning device, which is arranged 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 different trestles; When any detection target of the first detection device, the second detection device and the third detection device on the pier is out of position, the indicator light corresponding to the pier on the second warning device is turned on.

10. The interlocking safety system for pier oil unloading equipment according to claim 9, characterized in that: The railway vehicle blocking device comprises a vehicle blocking rod arranged at the front and rear gates. When the indicator lights on the first warning device and / or the second warning device are turned on, the vehicle blocking rod is locked in a non-lifted state.

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