CN205998899U - Mobile prestowage safety guard for light tender - Google Patents

Abstract

The utility model discloses a kind of mobile prestowage safety guard for light tender, belong to a kind of light tender and move prestowage matched with devices device, including brake track and brake module, brake track is located on the bottom structure between mobile prestowage running track；Brake module includes backing plate, and backing plate is provided with support, support is provided with two the first bearings, described two first bearings, and two the first bearings are separately installed with the structures such as two mutually corresponding brake oil cylinders；By increasing brake track and brake module on the basis of the mobile prestowage apparatus structure of light tender, for auxiliary brake during mobile prestowage plant running, effectively lift the brake force of whole device, improve the self-lock force only by running motor for the very big inertia force under the conditions of severe stormy waves to lead to brake the inadequate problem of strength, prevent from running that tooth jumped by tooth bar, sliding, even prestowage case such as topple at the generation of rough sledding, thus the safety sailed under the conditions of ensureing severe stormy waves.

Description

Mobile prestowage safety guard for light tender

Technical field

This utility model is related to a kind of light tender and moves prestowage matched with devices device, in particular, this utility model master It is related to a kind of mobile prestowage safety guard for light tender.

Background technology

The Changjiang river light tender is navigation mark in Yangtze River waterway, repairing, moves mark, cloth target main force ship type, most important thereon Production equipment is rotary-arm type loop wheel machine, and the indispensable auxiliary supporting device of this loop wheel machine is exactly mobile prestowage device.Mobile prestowage device is former Reason is when loop wheel machine hoisting operation, moves backward the object of constant weight on beam direction, offsets during loop wheel machine lifting work Moment, reduces ship's heeling angle, keeps the balance of ship.But this device is in orbit by four rollers when aboard ship using Run movement, its brake unit is that the electromagnetism brake holding self-locking device of the motor by travelling mechanism to complete brake force.In river During upper stormy waves inclement condition, ship can produce the motion such as violent rolling, pitching, heave, and the inertia force of generation may make shifting Dynamic prestowage case produces jumps tooth, sliding, or even topples and wait possibility, and prestowage installation weight reaches more than 5t, after the problems referred to above Fruit is very serious.This problem exists always for a long time, more than crewman's strong breeze just dare not sail, and the low work of rate of sailing is imitated Rate is low；Thus it is necessary that the safety device of the mobile prestowage device for light tender is studied and improved.

Utility model content

One of the purpose of this utility model is for above-mentioned deficiency, provides a kind of mobile prestowage safety for light tender Protection device is during expecting to solve mobile prestowage plant running on light tender in prior art, very big under the conditions of severe stormy waves Inertia force only by running the brake force as whole device for the self-lock force of motor, strength is inadequate and unreliable, mobile prestowage Inertia force would potentially result in running that tooth jumped by tooth bar, sliding, even prestowage case such as topple at the technical problem.

For solving above-mentioned technical problem, this utility model employs the following technical solutions：

A kind of mobile prestowage safety guard for light tender provided by the utility model, described safety device Including brake track and brake module, described brake track is located on the bottom structure between mobile prestowage running track；Described Brake module includes backing plate, and described backing plate is provided with support, and described support is provided with two the first bearings, and described two Two mutually corresponding brake oil cylinders are separately installed with one bearing, and described two first bearing, two brake oil cylinders defeated Rod all on brake shoes is installed, and two brake shoes are located at the both sides of brake track；Described brake oil cylinder also by pipeline with Hydraulic power unit is connected；Described hydraulic power unit includes fuel tank, motor and hydraulic pump, and described hydraulic pump is arranged on fuel tank and brake On pipeline between oil cylinder, and accumulator, reversal valve and check valve are also equipped with the pipeline between fuel tank and brake oil cylinder；With In hydraulic pump draw oil from fuel tank is driven by motor, and export to brake oil cylinder through check valve and reversal valve, thus Driving brake cylinder action.

Preferably, further technical scheme is：Described brake track is two, and is both secured on bottom structure, Two brake modules are mounted on every brake track.

Further technical scheme is：Prestowage device is provided with described dolly, described hydraulic power unit is installed on prestowage The top of device.

Further technical scheme is：It is mounted on spring, for driving under decompression state on described brake oil cylinder The take-off lever of brake oil cylinder is return.

Further technical scheme is：The outside of described brake module is equipped with horizontal roller, and described horizontal roller is put Outside in mobile prestowage running track.

Further technical scheme is：Described brake track insertion is arranged on the Os Draconis of hull bottom, and the rail that brakes The both sides in road are also encrypted and are provided with bracket.

Further technical scheme is：The inside of described first bearing is additionally provided with the second bearing, described brake oil cylinder peace It is contained in the second bearing.

Further technical scheme is：Described safety device also includes control system, and described control system includes controlling Device processed, electromotor brake catalyst, electromagnetic valve catalyst, two pressure switches of pressure gauge, described electromotor brake catalyst, electricity Magnet valve catalyst, pressure gauge and the equal access controller of two pressure switches；Described pressure gauge is installed in two pressure switches On pipeline between fuel tank and brake oil cylinder；For by pressure gauge collection when in preceding pipeline pressure transmission to controller, by Controller according to the closure of current pressure controlled motor Stopper contact device, electromagnetic valve catalyst and two pressure switches with disconnected Open.

Compared with prior art, one of the beneficial effects of the utility model are：By in light tender mobile prestowage device knot Increase brake track and brake module, for auxiliary brake during mobile prestowage plant running, effectively on the basis of structure The brake force of lifting whole device, improves the self-lock force only by running motor for the very big inertia force under the conditions of severe stormy waves and leads to The braking inadequate problem of strength, prevents from running that tooth jumped by tooth bar, sliding, even prestowage case such as topple at the generation of rough sledding, thus The safety sailed under the conditions of ensureing severe stormy waves, a kind of mobile prestowage for light tender simultaneously provided by the utility model Safety guard structure is simple, can be directly based upon existing mobile prestowage plant modification, and improved ship can be in strong wind Emergent under conditions of wave move mark, repairing, war flood etc., it takes short, efficiency high, thus by considerable indirect economic effect and society Benefit.

Brief description

Fig. 1 is the structural representation for one embodiment of this utility model is described；

Fig. 2 is for the brake module structural representation in one embodiment of this utility model is described；

Fig. 3 is for the hydraulic system structure schematic diagram in one embodiment of this utility model is described；

Fig. 4 is for the control system schematic diagram in another embodiment of this utility model is described；

Fig. 5 is the control system hardware configuration schematic block diagram for another embodiment of this utility model is described；

In figure, 1 is brake track, 2 is brake module, 21 is backing plate, 22 is the first bearing, 23 is brake oil cylinder, 24 are Brake shoes, 25 be support, 26 second bearings, 3 be dolly, 4 be mobile prestowage running track, 5 be hydraulic power unit, 51 be electronic Machine, 52 be hydraulic pump, 53 be accumulator, 54 be reversal valve, 55 be check valve, 56 be pressure gauge, 57 be relief valve, 6 be prestowage Device, 7 be horizontal roller, 8 be bracket, 9 be run motor, 10 be decelerator, 11 be rack gear arrangement, 12 be geared system, 13 For mobile prestowage safety guard.

Specific embodiment

Below in conjunction with the accompanying drawings this utility model is further elaborated.

This utility model is directed to the potential safety hazard described in background technology, improves the rate of sailing of ship.A set of peace is provided Reliable safety system entirely, carries out dynamic and static protection to mobile prestowage device.First beat before mobile prestowage plant running Open safety system, after prestowage device quits work, follow braking locking, this device moves prestowage device phase with former ship Mutually coordinate, work in order, do not interfere with each other.

With reference to shown in Fig. 1, a kind of mobile prestowage safeguard protection dress for light tender of an embodiment of the present utility model Put, this safety device includes brake track 1 and brake module 2, wherein brake track 1 is located between mobile prestowage running track 4 Bottom structure on；And brake module 2 then needs dolly 3 bottom being installed in mobile prestowage running track 4；

What is more important, in conjunction with shown in Fig. 2, aforesaid brake module 2 should include backing plate 21, backing plate 21 is provided with and props up Frame 25, support 25 is provided with two the first bearings 22, two the first bearings 22 is respectively mounted two again and mutually corresponding stops Car oil cylinder 23, the take-off lever of two brake oil cylinders 23 is all upper to install brake shoes 24, and two brake shoes 24 are located at brake track 1 Both sides；Brake oil cylinder 23 is connected with hydraulic power unit 5 also by pipeline；

In conjunction with shown in Fig. 3, above-mentioned hydraulic power unit 5 includes fuel tank, motor 51 and hydraulic pump 52, and wherein hydraulic pump 52 is pacified It is contained on the pipeline between fuel tank and brake oil cylinder 23, and be also equipped with accumulator on the pipeline between fuel tank and brake oil cylinder 23 53rd, reversal valve 54 and check valve 55；For hydraulic pump 52 draw oil from fuel tank is driven by motor 51, and through check valve 55 are exported to brake oil cylinder 23 with reversal valve 54, thus driving brake oil cylinder 23 action, and then by brake shoes 24 and brake rail Frictional force between road 1 realizes brake；The moment of torsion that brake produces, by brake gear support 25 and brake track 24 shared；

Meanwhile, hydraulic system to accumulator fill can, after accumulator is full of pressure, will continue to system punching press, from And ensure that system pressure maintains range of set value so that brake gear can be in 24h stops tight state.Additionally, setting at accumulator Put a road relief valve 57, when accumulator completes to fill energy, system pressure reaches setting value（4.0MPa）Afterwards, relief valve 57 is opened, liquid Force feed is back to hydraulic oil container.

As above-described embodiment is previously mentioned, above-mentioned brake module may be configured as four, and then forms skidding dress Put, specifically brake track 1 can be set to two, and be both secured on bottom structure, every brake track 1 is mounted on two Individual brake module 2；And under the auxiliary of hydraulic power unit 5 and matched hydraulic system, can achieve four brake modules Synchronization is braked and is unclamped.

In the present embodiment, by increasing brake track 1 and brake on the basis of the mobile prestowage apparatus structure of light tender Module 2, for auxiliary brake during mobile prestowage plant running, effectively lifts the brake force of whole device, improves Under the conditions of severe stormy waves, the very big inertia force only self-lock force by running motor leads to brake the inadequate problem of strength, prevents from running Tooth jumped by tooth bar, sliding, even prestowage case such as topple at the generation of rough sledding, thus the safety sailed under the conditions of ensureing severe stormy waves Property.

According to another embodiment of the present utility model, for ease of the structural integrity of device, inventor moves with reference to spot ship The structure of dynamic prestowage device, above-mentioned hydraulic power unit 5 is installed on the top of prestowage device 6, and go out as shown in Figure 1, join Carry and put 6 tops being placed in dolly 3；On the other hand, stretch out for ease of the take-off lever pressurization of brake oil cylinder 23, the work(that decompression is return Can, also can be respectively mounted spring on above-mentioned brake oil cylinder 23, brake oil cylinder 23 can be driven under decompression state by this spring Take-off lever return, brake shoes 24 unclamps.

Further, also can be equipped with horizontal roller 7 in the outside of brake module 2, and make this horizontal roller 7 be placed in movement The outside of prestowage running track 4；Horizontal roller 7 can play the effect sharing longitudinal moment, mitigates prestowage device dolly both sides Horizontally-guided roller and running track 4 channel-section steel between friction, thus play protection running track 4 channel-section steel effect.Herein It should be noted that the gap of installing between horizontal roller and running track 4 is less than the friction plate moving prestowage device and operation Gap between track 4, so that when mobile prestowage device work and ship produce trim, prevent its friction plate and fortune Row track 4 contacts, thus affecting the normal work of mobile prestowage device, and plays a protective role.

And, horizontal roller device is mainly made up of parts such as upper undersetting, support, bearing pin, gland and back-up rings.Wherein The parts such as upper undersetting, gland adopt Q235-B steel plate to make, and support and bearing pin are all made using 45# forged steel pieces.

Simultaneously in order to increase the stability of above-mentioned brake track 1, preferably with steel plate as above-mentioned brake track 1, and It is inserted on the Os Draconis being arranged on hull bottom, and the both sides of the track 1 that brakes also need encryption to be provided with bracket 8, aforesaid steel Plate can be selected for the thickness of 40mm, to increase the safety of its use, thus making up the weaker defect of running track 4 rigidity.

In addition, for ease of changing the brake shoes 24 in above-mentioned brake module 2, also the can be set up in the inside of the first bearing 22 Two bearings 26, above-mentioned brake oil cylinder is installed 23 in the second bearing 26.

With reference to shown in Fig. 4, it is used for solving in a more preferred embodiment of technical problem in this utility model, inventor On the basis of mobile prestowage safety guard also described in above-described embodiment, increased the control system for controlling its hydraulic system System, this control system includes controller, electromotor brake catalyst, electromagnetic valve catalyst, 56 two pressure switches of pressure gauge, electricity Brake catalyst, electromagnetic valve catalyst, pressure gauge 56 and the equal access controller of two pressure switches；Pressure gauge 56 and two Pressure switch is installed on the pipeline between fuel tank and brake oil cylinder 23；For being gathered when pressure in preceding pipeline by pressure gauge 56 Power is transmitted to controller, by controller according to current pressure controlled motor Stopper contact device, electromagnetic valve catalyst and two The closure of individual pressure switch and disconnection；

Than that described above, also in conjunction with the principle of control chamber, controller can be installed on pumping plant control in above-mentioned practical application In case, with reference to shown in Fig. 5, in this utility model practical application, the hardware composition of control system is as follows：

(1) pumping plant control chamber 1, including manual/auto permutator, starts stop button, unclamps the display lamp that puts in place, stops Car puts in place display lamp, chopper, catalyst, transformator, rectifier bridge, fuse etc..It is arranged on down the stairs port in cabin.Permissible Realize pumping plant power supply, pumping plant starts, stops, observation is brake or the state unclamped.

(2) remote signal indication box 1, including power supply, runs, brakes, unclamping signal lamp.It is arranged on prestowage cabinet attached Closely, it is easy to the state that operator observe pumping plant and system nearby near prestowage device.

(3) pumping plant remote control button box 1, including pumping plant startup, stop button.It is arranged near prestowage cabinet, be easy to operate Personnel leave startup and the stopping that prestowage device controls pumping plant at a distance.

(4) signal connector 1 on the spot, is mainly used in external 1 oil circuit manifold pressure switch, 1 automatic start-stop pressure Switch, 1 electromagnetic valve, 1 0.75kW Electric Machine at Pumping Station power supply.It is arranged on mobile prestowage dolly, be mainly used in all power supplys Holding wire and control line concentrate on one, attractive in appearance neat, easy-to-connect.

With reference to shown in Fig. 4, the application of a preferred control mode of control system described in the present embodiment is as follows：

Original mobile prestowage vehicle motor power is 5.5kW, in original mobile prestowage device frequency-conversion control cabinet Prestowage electromotor brake catalyst KM1 picks out a normally opened contact, the 1KA in the pumping plant control chamber increasing newly to the system（Electromagnetic valve Catalyst）, the brake of the system and unclamp signal and be taken from 2 pressure switches on hydraulic system oil circuit：

Total oil circuit pressure switch：

1. KM1 disconnects, electromagnetic valve dead electricity, total oil circuit upward pressure switch 1PK closure, produces pressure reduction, brake puts in place, signal When red on indication box and pumping plant control chamber；

2. KM1 adhesive, solenoid valves, total oil circuit upward pressure switch 1PK opens, and carries out emptying, unclamps and put in place, signal Green light on indication box and pumping plant control chamber；

Pumping plant start and stop pressure switch：

1. when fuel tank is less than 2Mpa, the normally opened contact 1P closure of pumping plant start and stop pressure switch, hydraulic power unit motor opens automatically Dynamic.

2., when fuel tank reaches 4Mpa, the normally opened contact 2P of pumping plant start and stop pressure switch disconnects, and hydraulic power unit motor is stopped automatically Only.

Prestowage motor power-off, shuts down, the prestowage electromotor brake in original mobile prestowage device frequency-conversion control cabinet Catalyst KM1 disconnects, and the 1KA in newly-increased pumping plant control chamber disconnects, and now electric wiring is off-state, electromagnetic valve dead electricity, Then pressure reduction is produced on main oil pipe, now the brake gear on four feet will be checked.At this time due to total oil circuit mechanically The intrinsic characteristic of selected pressure switch determines：Electromagnetic valve dead electricity, total oil circuit upward pressure switch closure（1PK）, after 1PK closure, Stop and tight loose drive catalyst（2KA）Closure, its auxiliary contact（2KA1）Closure, the then 4HL1 red light on remote signal indication box Bright, on pumping plant control chamber 4HL when red, display brake puts in place.

Prestowage electrical power, starts running, the prestowage electromotor brake in original mobile prestowage device frequency-conversion control cabinet Catalyst KM1 adhesive, the 1KA in newly-increased pumping plant control chamber also follows adhesive（We select 1KA model JZX-22F/4Z, More advanced, sucting speed is faster than original KM1）, the control system electric wiring now increasing newly is prior to original control system line Road closes, and solenoid valves open oil circuit, the oil pressure unloading on oil circuit, and the brake gear on four feet will first unclamp, then Prestowage motor brake then unclamps.At this time because the intrinsic characteristic of the pressure switch selected by total oil circuit mechanically determines：Electricity Magnet valve is energized, and total oil circuit upward pressure switch is opened（1PK）, carry out emptying, main oil pipe pressure is zero.After 1PK opens, stop tight loose Drive catalyst（2KA）Open, its auxiliary contact（2KA1）Open, then the 5HL1 green light on remote signal indication box, pumping plant 5HL green light on control chamber, display is unclamped and is put in place.

In addition, this control system also can achieve automatic/hand distant control function：It is provided with pumping plant control chamber 1 automatic/hand permutator（ZHKG2）, generally, beat in auto state.

Electric Machine at Pumping Station braking contactor from newly-increased pumping plant control chamber（1KM）Draw normally opened contact and newly-increased pumping plant Control the start button on casing（1SQ）And stop button（1ST）Reciprocal interlocking, can get to the manual shape of pumping plant by ZHKG2 State.

Electric Machine at Pumping Station braking contactor from newly-increased pumping plant control chamber（1KM）Draw normally opened contact and newly-increased remote control Start button on button box（2SQ）And stop button（2ST）Reciprocal interlocking, can get to pumping plant remote state by ZHKG2.

Pumping plant start and stop pressure switch 1 is additionally provided with hydraulic power unit oil circuit house steward, due to the intrinsic spy of this pressure switch Property：

When oil pressure is for 4Mpa（By calculating the setting value determining）, the high spacing pressure switch normally-closed contact of pumping plant fuel tank （2P）Disconnect, the normally-closed contact K2 of auxiliary reclay disconnects therewith, now circuit is open circuit, realizes pumping plant and is automatically stopped.

When oil pressure is less than 2Mpa（By calculating the setting value determining）, pumping plant fuel tank lower bound position pressure switch normally opened contact （1P）Closure, the normally-closed contact K1 closure of auxiliary reclay therewith, now circuit is closed circuit, realizes pumping plant automatic.

As described by above-described embodiment, the preferred embodiment of this utility model in actual use, works as pumping plant After control chamber switches on power, motor 51 starts, and drives gear pump by shaft coupling（I.e. hydraulic pump 52）Rotate to system fuel feeding, Now also to accumulator 53 pressurising, system oil pressure quickly raises system, when brake oil cylinder oil pressure reaches setting maximum, oil pump Out of service；When brake oil cylinder oil pressure is less than and sets minimum, motor pump starts again to start pump oil；When mobile prestowage During walking, when brake oil cylinder oil pressure is zero, motor 51 and hydraulic pump 52 should normally run, when pressure exceedes setting pressure, Unnecessary fluid is through relief valve oil sump tank.When brake electricity commutation magnet valve（I.e. reversal valve 54）During dead electricity, system pressure oil enters brake Oil cylinder, brake gear is stopped tightly；When the solenoid directional control valve that brakes obtains electric, oily in-cylinder pressure oil through electromagnetic valve oil return case, in oil cylinder bullet The lower brake gear of spring effect unclamps.

By the solenoid directional control valve in above-mentioned hydraulic system, when on ship, loop wheel machine and mobile prestowage device need work, electricity Magnetic reversal valve obtains electric and connects return line, and system pressure unloads, and hydraulic oil is back to hydraulic oil container, now hydraulic cylinder piston Bar rebounds rapidly under the action of the spring, realizes brake gear and unclamps action；When loop wheel machine and mobile prestowage device quit work, Solenoid directional control valve dead electricity, now no pressure in fluid pressure line, motor starts automatically, drives hydraulic pump works, now brake fluid Cylinder piston rod ejects under oil pressure effect, realizes brake work.Now motor and gear pump work on, until whole hydraulic pressure The pressure of system reaches setting value（Preferably 4.0MPa）, motor autostop, now hydraulic oil is in check valve and electromagnetic switch It is impossible to backflow in the presence of valve cuts out, maintain the oil pressure at brake oil cylinder so that brake gear can be continuously in tight state of stopping.

And whole brake module 2 all parts form all with bolts direct or indirect be connected to backing plate On 21, backing plate 21 is welded on prestowage dolly 3 bottom.Brake shoes 24 and matched adjustment block, it is arranged on the first bearing 22 Interior brake oil cylinder 23 is connected with support 25 by the second bearing 26（Every module totally 12 bolt）, when need change brake shoes When 24, cut off oil circuit, turn on above-mentioned 12 bolts, the second bearing 26 positioned at brake track 1 both sides and brake shoes 24 can be automatically Fall within maintenance groove（Ship Structure is reserved）, now i.e. replaceable brake shoes.

Than that described above in addition it is also necessary to explanation is in " embodiment " spoken of in this manual, " another reality Apply example ", " embodiment " etc., refer to the specific features with reference to the description of this embodiment, structure or feature include general in the application In at least one embodiment of including property description.In the description multiple local occur statement of the same race be not necessarily refer to same Embodiment.Furthermore, it is understood that when describing specific features, structure or feature with reference to any embodiment, to be advocated is To realize this feature, structure or feature in conjunction with other embodiment also to fall in the range of this utility model.

Although reference be made herein to multiple explanatory embodiment of the present utility model is described to this utility model, but, It should be understood that those skilled in the art can be designed that a lot of other modifications and embodiment, these are changed and embodiment To fall within spirit disclosed in the present application and spirit.More specifically, in disclosure, drawings and claims In the range of, multiple modifications and improvement can be carried out to the building block of theme composite configuration and/or layout.Except to building block And/or the modification that layout is carried out is with improvement outward, to those skilled in the art, other purposes also will be apparent from.

Claims (8)

1. a kind of mobile prestowage safety guard for light tender it is characterised in that：Described safety device includes braking Track（1）With brake module（2）, described brake track（1）It is located at mobile prestowage running track（4）Between bottom structure on； Described brake module（2）It is installed on mobile prestowage running track（4）On dolly（3）Bottom；

Described brake module（2）Including backing plate（21）, described backing plate（21）On support is installed（25）, described support（25）Upper peace Equipped with two the first bearings（22）, described two first bearings（22）, and described two first bearing（22）On be separately installed with Two mutually corresponding brake oil cylinders（23）, two brake oil cylinders（23）Take-off lever all on brake shoes is installed（24）, and two Individual brake shoes（24）It is located at brake track（1）Both sides；Described brake oil cylinder（23）Also by pipeline and hydraulic power unit（5）It is connected Logical；

Described hydraulic power unit（5）Including fuel tank, motor（51）With hydraulic pump（52）, described hydraulic pump（52）Be arranged on fuel tank with Brake oil cylinder（23）Between pipeline on, and fuel tank and brake oil cylinder（23）Between pipeline on be also equipped with accumulator（53）、 Reversal valve（54）With check valve（55）；For by motor（51）Drive hydraulic pump（52）Draw oil from fuel tank, and warp Check valve（55）With reversal valve（54）Export to brake oil cylinder（23）, thus driving brake oil cylinder（23）Action.

2. the mobile prestowage safety guard for light tender according to claim 1 it is characterised in that：Described brake Track（1）For two, and it is both secured on bottom structure, every brake track（1）On be mounted on two brake modules（2）.

3. the mobile prestowage safety guard for light tender according to claim 1 it is characterised in that：Described dolly （3）On prestowage device is installed（6）, described hydraulic power unit（5）It is installed on prestowage device（6）Top.

4. the mobile prestowage safety guard for light tender according to claim 1 it is characterised in that：Described brake Oil cylinder（23）On be mounted on spring, under decompression state drive brake oil cylinder（23）Take-off lever return.

5. the mobile prestowage safety guard for light tender according to claim 1 it is characterised in that：Described brake Module（2）Outside be equipped with horizontal roller（7）, described horizontal roller（7）It is placed in mobile prestowage running track（4）Outside.

6. according to claim 1 or 5 be used for light tender mobile prestowage safety guard it is characterised in that：Described Brake track（1）Insertion is arranged on the Os Draconis of hull bottom, and the track that brakes（1）Both sides also encrypt and be provided with bracket（8）.

7. according to claim 1 or 5 be used for light tender mobile prestowage safety guard it is characterised in that：Described First bearing（22）Inside be additionally provided with the second bearing（26）, described brake oil cylinder（23）It is arranged on the second bearing（26）Interior.

8. the mobile prestowage safety guard for light tender according to claim 1 it is characterised in that：Described peace Full device also includes control system, and described control system includes controller, electromotor brake catalyst, electromagnetic valve catalyst, pressure Power table（56）Two pressure switches, described electromotor brake catalyst, electromagnetic valve catalyst, pressure gauge（56）Open with two pressure Close equal access controller；Described pressure gauge（56）It is installed in fuel tank and brake oil cylinder with two pressure switches（23）Between On pipeline；For by pressure gauge（56）Collection when in preceding pipeline pressure transmission to controller, by controller according to current pressure The closure of controlled motor Stopper contact device, electromagnetic valve catalyst and two pressure switches and disconnection.