CN106586858B - A kind of maritime platform large-sized steel drag chain system performance test traction device - Google Patents

Abstract

The invention discloses a kind of maritime platform large-sized steel drag chain system performance test traction devices, including power side unit, support Follow-up vehicle unit, drag chain pedestal, top end holder unit and end support unit, drag chain pedestal is equipped with drag chain, wirerope is wound on power side unit, wirerope after the fixed pulley on top end holder unit with support Follow-up vehicle unit side by connecting, support Follow-up vehicle unit is connect with drag chain, the other side of support Follow-up vehicle unit is also connect with wirerope, and wirerope is connect after sequentially passing through fixed pulley and the company's of dragging pedestal with power side unit.The present invention is driven using wirerope, has the characteristics that forward driving and reverse driving, starting and stopping stable buffering；Both ends bracket and drag chain pedestal lateral connection realize internal force transmitting by steel construction, so that entire chassis is not necessarily to and ground is anchored；Support Follow-up vehicle to connect drag chain motion top, can guarantee the height of end, it can be achieved that any position locking function, and each unit assembly is convenient.

Description

A kind of maritime platform large-sized steel drag chain system performance test traction device

Technical field

The present invention relates to maritime platform large-sized steel drag chain system performance test traction devices, belong to ocean platform production Field.

Background technique

With marine resources development flourish, the medium-and-large-sized steel pull chain system of maritime platform be typically employed in cable, Oil pipe, water pipe, on air hose, plays the role of traction and protection, is widely used on marine worker job platform at present, not only tracheae Cable, oil pipe etc. are protected, and marine worker job platform is made integrally to seem cleaner and tidier, beautiful.

It is dedicated since the particular row and ocean platform of ocean operation condition are to the complexity and randomness of drag chain system demand In the research and development of traction device of the multilayer multi-line large-sized steel drag chain system of maritime platform, there are many difficulties.Currently on the market Widely used is all that traction drive is carried out with driving, and hitch structure design is not ingenious, and flexibility is not high, structure size It is excessively huge and not easy to install, due to ocean operation have the characteristics that it is high-intensitive, highly difficult, uncertain, currently on the market Drag chain trailer system dimensionally and installs the requirement for being all unable to satisfy maritime platform to drag chain trailer system.

Summary of the invention

Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of maritime platform large-sized steel Drag chain system performance test traction device, is driven using wirerope, is had the characteristics that forward driving and reverse driving, is started, stops Vehicle stable buffering, and each unit assembly is convenient.

Technical solution: to achieve the above object, maritime platform large-sized steel drag chain system performance test of the invention is with leading Leading-in device, including power side unit, support Follow-up vehicle unit, drag chain pedestal, top end holder unit and end support unit, it is described Drag chain pedestal is equipped with drag chain, and dynamic side unit is installed on drag chain pedestal, and wirerope is wound on power side unit, and wirerope is logical It being connect after the fixed pulley crossed on top end holder unit with support Follow-up vehicle unit side, support Follow-up vehicle unit is connect with drag chain, The other side of support Follow-up vehicle unit is also connect with wirerope, and wirerope sequentially passes through fixed pulley and drag chain base on end support unit It is connect after seat with power side unit.

Preferably, the power side unit includes driving wheel, driven wheel and motor, the motor drives driving rotation Dynamic, one end of wirerope spiral winding on driving wheel and driven wheel, wirerope is connect with support Follow-up vehicle unit side, is sequentially passed through It is connect after fixed pulley and drag chain pedestal on end support unit with driving wheel, on driving wheel and driven wheel after spiral winding, By being connect after the fixed pulley on top end holder unit with the support Follow-up vehicle unit other side.

Preferably, the top end holder unit be steel frame construction, top end holder unit top be equipped with fixed pulley and At least two directive wheels, the angle of the axis of the axis and directive wheel of fixed pulley are 90 °, and it is fixed that wirerope enters after being pierced by from driven wheel In the groove of pulley, directive wheel is then passed through.

Preferably, the driving wheel include first bearing seat, first bearing, the one or five slot reel, the first key, first from Split nut and drive shaft, drive shaft are connected to motor, and are equipped with first bearing at the both ends of drive shaft, first bearing is mounted on In first bearing seat, it is cased with the one or five slot reel on the driving shaft, the one or five slot reel is fixed on the driving shaft by the first key, The first self-locking nut is cased with outside the first key, the driven wheel includes second bearing seat, driven shaft, the second key, the two or five slot volume Cylinder, the second self-locking nut, second bearing, are equipped with second bearing at the both ends of driven shaft, second bearing is mounted on second bearing On seat, the two or five slot reel is cased on driven shaft, the two or five slot reel is fixed on driven shaft by the second key, in the second key It is cased with the second self-locking nut, wirerope spiral winding on the one or five slot volume and the two or five slot reel outside.

Preferably, the support Follow-up vehicle unit is steel frame construction, two sides are equipped with 2n+1 thread, and n is positive Integer, the thread include nut, pull rod and pulling buckle, and pull rod is connect after passing through support Follow-up vehicle unit with nut, pull rod End is connect with pulling buckle, and wirerope is mounted in pulling buckle.

Preferably, the drag chain includes several outer link units, several internal chaining units and a pair of base unit, The two sides of the internal chaining unit are hinged with outer link unit respectively, and the outer link unit at both ends is cut with scissors with a base unit respectively It connects；The outer link unit includes a pair of of outer plate and exterior chain guide plate, and two outer plates pass through a pair of of exterior chain guide plate connection, a pair of Exterior chain guide plate and a pair of of outer plate are sheet metal designing, several the first lateral chains are connected separately between a pair of of outer plate Bar is mounted on articulated shaft in the two sides of each outer plate, is equipped with pin shaft along hingedly axisymmetric；The internal chaining unit packet Containing chain guide plate in a pair of of inner plate and one pair, for a pair of of inner plate by chain guide plate connection in one pair, inner plate and interior chain guide plate are equal For sheet metal designing, several the second lateral chain bars are installed between a pair of of inner plate, the two sides of inner plate be equipped with hingedly The corresponding hinge hole of axis, set on inner plate there are two with pin shaft cooperation arc groove, circle of two arc grooves about hinge hole Heart central symmetry, pin shaft are inserted into arc groove.

Preferably, the outer plate includes exterior chain outside plate and exterior chain inner panel, installed between exterior chain outside plate and exterior chain inner panel There is fixture block, for the inner plate between exterior chain outside plate and exterior chain inner panel, articulated shaft sequentially passes through exterior chain outside plate, inner plate and outer Chain inner panel, pin shaft sequentially pass through exterior chain outside plate, inner plate and exterior chain inner panel, and pin shaft is located in arc groove.

Preferably, a pair of of exterior chain guide plate is connected by several first vertical chain bars, chain guide plate passes through second in one pair Vertical chain bar connection, the first vertical chain bar, the second vertical chain bar, the first lateral chain bar and the second lateral chain bar by exterior chain guide plate and The space that interior chain guide plate is formed is divided into several grids.

Preferably, the base unit includes a pair of base plate, two base plates are connected by several pedestal guide plates, The waist-shaped hole of several losss of weight is equipped on pedestal guide plate.

The utility model has the advantages that maritime platform large-sized steel drag chain system performance test traction device of the invention, using wirerope Driving has the characteristics that forward driving and reverse driving, starting and stopping stable buffering；Both ends bracket laterally connects with drag chain pedestal It connects, internal force transmitting is realized by steel construction, so that entire chassis is not necessarily to and ground is anchored；Support Follow-up vehicle connection drag chain movement top Portion, can guarantee the height of end, it can be achieved that any position locking function, and each unit assembly is convenient.

Detailed description of the invention

Fig. 1 is overall structure diagram of the invention.

Fig. 2 is power side unit structural schematic diagram of the invention.

Fig. 3 is power side unit wirerope spiral winding structure schematic diagram of the invention.

Fig. 4 is driving wheel perspective view of the explosion of the invention.

Fig. 5 is driven wheel perspective view of the explosion of the invention.

Fig. 6 is power side unit wheel design schematic diagram of the invention.

Fig. 7 is leading block assembly explosive view of the invention.

Fig. 8 is support Follow-up vehicle cellular construction schematic diagram of the invention.

Fig. 9 is thread structural schematic diagram of the invention.

Figure 10 is drag chain base part structural schematic diagram of the invention.

Figure 11 is end support cellular construction schematic diagram of the invention.

Figure 12 is the overall structure diagram of drag chain in Fig. 1.

Figure 13 is that the exterior chain in Figure 12 connects cellular construction schematic diagram.

Figure 14 is the perspective view of the explosion of the outer link unit outer plate in Figure 12.

Figure 15 is the outer link unit transverse direction chain bar structural schematic diagram in Figure 12.

Figure 16 is the internal chaining cellular construction schematic diagram in Figure 12.

Figure 17 is the inner plate key geometric dimension analysis chart in Figure 12.

Figure 18 is the base unit structural schematic diagram in Figure 12.

Figure 19 is the drag chain system scale diagrams in Figure 12.

Specific embodiment

The present invention will be further explained with reference to the accompanying drawing.

As shown in Fig. 1 to 11, a kind of maritime platform large-sized steel drag chain system performance test traction device, comprising: dynamic Power side unit 1, support Follow-up vehicle unit 2, drag chain pedestal 3, top end holder unit and end support unit 4.The power side is single In member 1, driving wheel 11, driven wheel 16 and motor 12 are mounted on the base, and directive wheel 13 and fixed pulley 14 are mounted on top end holder On the top plate of unit, wirerope 15 passes through directive wheel 13 and fixed pulley 14 enters driven wheel 16, in driving wheel 11 and driven wheel 16 Upper spiral winding；In the support Follow-up vehicle unit 2, universal wheel 23 is mounted on the crossbeam of bottom end, and thread 21 is installed respectively In top plate two sides, centre is main tie, and the right and left pull rod prevents wheel sideslip, by adjust thread nut 211 into It gives to adjust the elastic of wirerope, guarantees support Follow-up vehicle traveling comfort, it is logical that four drag chains are respectively set in two sides on top plate Hole 22, for fixing drag chain；In the drag chain pedestal 3, drag chain pedestal 3 is welded by drag chain track 31 and crossbeam 32, each Through-hole 33, the transmission for wirerope is arranged in 32 center of crossbeam.In the end support unit 4, fixed pulley 41 is separately mounted to bottom On end and top plate, wirerope 15 is connected on the thread 21 of support Follow-up vehicle 2 after passing through two fixed pulleys 41, ultimately forms one A complete transmission chain.

As shown in Figure 3-4.The driving wheel 11 includes first bearing seat 111, first bearing 112, the one or five slot reel 113, the first key 114, the first self-locking nut 115 and drive shaft 116, driven wheel 16 include second bearing seat 161, driven shaft 162, Second key 163, the two or five slot reel 164, the second self-locking nut 165, bearing 166 are fixed on the base after successively installing；It is described Wirerope 15 is spirally wound on driving wheel 11 and driven wheel 16, and wirerope 15 starts to wind in 16 bottom end side of driven wheel, is being driven The disengaging of 11 bottom end sides is taken turns, contact angle is increased by spiral winding, so that drag chain be driven to move back and forth, meets wanting for drag chain traction It asks.

As seen in figs. 5-6.The directive wheel 13 includes guiding axis 131, spacer 132,3rd bearing 133, the self-locking spiral shell of third Mother 134 and pulley 135, are mounted on top plate, the directive wheel 13 and 14 setoff installation of fixed pulley make steel on top plate after assembling Cable 15 passes through 14 groove center of fixed pulley after passing through directive wheel 13, plays the guiding role of wirerope, wirerope is avoided to job-hop.

As shown in Figure 7.Thread 21 includes nut 211, pull rod 212, pulling buckle 213 in the support Follow-up vehicle unit 2, Spanner slot is set on pull rod 212, and thread 21 is fixed on top plate two sides, after wirerope 15 is installed or after long-time use, needs The elastic of wirerope 15 is controlled by adjusting the feeding of thread 21, avoid causing under driving capability because of wirerope relaxation Drop guarantees the continuity and stationarity of support Follow-up vehicle operation.

As shown in Figure 12 to Figure 19, drag chain includes outer link unit 51, internal chaining unit 52 and base unit 53.Exterior chain Order member 51 is successively spaced in sequence with internal chaining unit 52 by the pin shaft 1015 and articulated shaft 10111 of outer link unit 51 Hingedly, when drag chain system is bent, the pin shaft 1015 of outer link unit 51 is pressed in the hinged arc groove 2011 of interior link unit 52 The radius of gyration 2014 of 400mm, the inside and outside link angle of revolution 2013 of the carrier bar pitch 2015 and 30 ° of 500mm link constraint, chain Plate pitch 2015 forms half of dodecagon 2018, and the limit angle of symmetrical hinged arc groove 2011 is half positive 12 In the while corresponding central angle of shape 2018, also referred to as in outer link maximum relative rotating angle 2013, the radius of gyration 2014 is half The circumradius of a dodecagon 2018, drag chain system both ends link a base unit 53 respectively, pass through both ends respectively Outer link unit 51 pin shaft 1015 and articulated shaft 10111 linked with it, one end is fixed on platform, and the other end is fixed on shifting In dynamic equipment, the base unit 53 being fixed in mobile device drives entire drag chain system back and forth to transport under the drive of mobile device It is dynamic.

In the present embodiment, outer link unit 51 includes exterior chain guide plate 102 and a pair of of outer plate 101, and a pair of of outer plate 101 is logical The connection of exterior chain guide plate 102 is crossed, outer plate 101 includes the exterior chain outside plate 1011 and exterior chain inner panel 1017 of sheet metal designing, exterior chain outside plate 1011 it is upper below by metal plate bending, the left and right sides is equipped with pin shaft 1015 between exterior chain outside plate 1011 and exterior chain inner panel 1017 With articulated shaft 10111, it is respectively set on pin shaft 1015 and articulated shaft 10111 there are two Tetrafluoro spacer 1013, outside is respectively set There is axle bumper plate 10110 and be connected and fixed by fastener 1012 and 1016, installation is logical there are two being provided between upper and lower ends The fixture block 1014 in hole, under the premise of not reducing drag chain system bearing capacity, structural rigidity, exterior chain outside plate 1011 is set by metal plate Meter reduces self weight and the consumptive material of drag chain system, and the strength and stiffness of exterior chain outside plate 1011 are improved using metal plate bending.

Exterior chain guide plate 102 is to be provided with some through-holes by sheet metal designing bending and above, is equipped with one above through-hole A little the first vertical chain bars 106 that tapped through hole is provided with by the both ends that fastener 107 is connected and fixed, 102 both ends of exterior chain guide plate It is welded with exterior chain guide plate end plate 105, setting is equipped with end on two through-holes and sets there are two through-hole on exterior chain guide plate end plate 105 It is equipped with the first lateral chain bar 103 of tapped through hole, the first lateral chain bar 103 includes transverse link axis 1051 and covers in set above Cylinder 1052, can make the medium pipeline to shuttle in drag chain system separate space become rolling friction from sliding friction in this way, make The frictional force that medium pipeline is subject to is reduced, and improves medium pipeline service life, 1017 upper end of exterior chain outside plate 1011 and exterior chain inner panel It is respectively set with lower end there are two through-hole 1018, the first lateral chain bar 103 is connected and fixed by fastener 107 in exterior chain inner panel 1017, on fixture block 1014 and exterior chain outside plate 1011, under the premise of not reducing drag chain system bearing capacity, structural rigidity, exterior chain Guide plate 102 reduces self weight and the consumptive material of drag chain system by sheet metal designing, and the intensity of exterior chain guide plate 102 is improved using metal plate bending And rigidity, two rows of symmetrical through-holes 1019 are provided among exterior chain outside plate 1011 and exterior chain inner panel 1017, through-hole 1019 is pacified above Equipped with the first lateral chain bar 104 being connected and fixed by fastener 108.

Internal chaining unit 52 includes interior chain guide plate 202 and a pair of of inner plate 201, and a pair of of inner plate 201 passes through interior chain guide plate 202 connect, and hinged arc groove 2011, hinge hole 2012 are provided on inner plate 201, and centre is provided with two rows of symmetrical through-holes 208, the articulated shaft 10111 of outer link unit 51 is mounted in hinge hole 2012, and pin shaft 1015 is mounted on hinged arc groove 2011 In, when drag chain is at horizontal position, pin shaft 1015 of the pin shaft 1015 in interior acromere relative horizontal position 2016, i.e., above hinge hole 1015 center of circle of pin shaft is located at another arc groove with the pin shaft 1015 below hinge hole when positioned at 2011 left-most position of arc groove 1015 circle center line connecting of pin shaft passes through the hinge hole center of circle when 2011 right-most position, and the line in three centers of circle is vertical direction, this In position of left and right side when being face maritime platform multilayer multi-line large-sized steel drag chain system, or it is hinged When the articulated shaft center of circle is located at left-most position with the articulated shaft below hinge hole when articulated shaft above hole is located at right-most position Articulated shaft circle center line connecting passes through the hinge hole center of circle, and when drag chain system bending, pin shaft 1015 slides into opposite rotary position 2017, pin Axis 1015 is from the inside and outside link angle of revolution 2013 that interior acromere relative horizontal position 2016 slides into opposite rotary position 2017 30 °, the radius of gyration 2014 is 400mm, and carrier bar pitch 2015 is 500mm, and carrier bar pitch 2015 forms half of dodecagon 2018, the limit angle of symmetrical hinged arc groove 2011 is the corresponding central angle in side of half of dodecagon 2018, also referred to as For interior outer link maximum relative rotating angle 2013, the radius of gyration 2014 is the circumradius of half of dodecagon 2018, When drag chain system bending, pin shaft 1015 moves back and forth between relative horizontal position 2016 and opposite rotary position 2017.

Interior chain guide plate 202 is to be equipped with some two to be connected and fixed by fastener 206 above by sheet metal designing bending End is provided with the second vertical chain bar 205 of tapped through hole, and the both ends of interior chain guide plate 202 are welded with interior chain guide plate end plate 204, end plate Setting is there are two through-hole on 204, is equipped with the second lateral chain bar 203 that end is provided with tapped through hole on two through-holes, and second Lateral chain bar 203 is connected and fixed on inner plate 201 by fastener 206, is provided among inner plate 201 two rows of symmetrical logical Hole 208, through-hole 208 are equipped with the lateral chain bar 209 being connected and fixed by fastener 206 and fastener 207 above.

Drag chain system both ends link a base unit 53, recessed hinge 307 and through-hole 308 difference of base unit 53 respectively It is fixed on the pin shaft 1015 and articulated shaft 10111 of the outer link unit 51 at both ends, drag chain base is fixed in 53 one end of base unit On seat 3, the other end is fixed on support Follow-up vehicle unit 2, and the base unit 53 being fixed on support Follow-up vehicle unit 2 is supporting Entire drag chain system is driven to move back and forth under the drive of Follow-up vehicle unit 2.The both ends of base unit 53 are by pedestal guide plate 302 The base plate 301 of connection, base plate 301 are by sheet metal designing and side bending, and there are four through-holes for the part setting of bending 306, it is fixed in fixed platform and mobile device, centre setting is fluted, and base plate 301 is provided with some through-holes 305.

302 both ends of pedestal guide plate are welded with end connecting plate 304, and connecting plate 304 both ends in end are provided with through-hole, and pedestal is led Plate 302 is by sheet metal designing bending, and middle section is provided with waist-shaped hole 303, in the intensity for guaranteeing entire drag chain system In the case where rigidity, self weight and the consumptive material of drag chain system can be reduced, pedestal guide plate 302 is fixed on base plate 301 Some through-holes 305 on.

When using maritime platform multilayer multi-line large-sized steel drag chain system, medium pipeline is passed through by lateral chain bar and is erected The separate space formed to chain bar, when medium pipeline deploys, according to operation needs, mobile device dragging is fixed in the above Base unit 53, therefore, medium pipeline achieve the purpose that it is mobile, entire drag chain system dragging during, due to structure Ingenious in design, even if the active length requirement of drag chain system is too long, receiving pressure is excessive inside drag chain, the drag chain system working time Too long, the pendency degree L of the case where drag chain system in horizontal ends is all not in bending deformation, i.e. drag chain suspension section is zero, Entire drag chain system is in stable operating status always.

The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (7)

1. a kind of maritime platform large-sized steel drag chain system performance test traction device, it is characterised in that: including power side list Member, support Follow-up vehicle unit, drag chain pedestal, top end holder unit and end support unit, the drag chain pedestal are equipped with drag chain, Dynamic side unit is installed on drag chain pedestal, wirerope is wound on power side unit, wirerope passes through on top end holder unit It is connect after fixed pulley with support Follow-up vehicle unit side, support Follow-up vehicle unit is connect with drag chain, supports the another of Follow-up vehicle unit Side is also connect with wirerope, and wirerope connects after sequentially passing through fixed pulley and the company's of dragging pedestal on end support unit with power side unit It connects；The power side unit includes driving wheel, driven wheel and motor, and the motor drives driving wheel rotation, and wirerope is in driving wheel It connect, sequentially passes through on end support unit with support Follow-up vehicle unit side with one end of spiral winding on driven wheel, wirerope Fixed pulley and drag chain pedestal after connect with driving wheel, on driving wheel and driven wheel after spiral winding, pass through top end holder list It is connect after fixed pulley in member with the support Follow-up vehicle unit other side；The driving wheel includes first bearing seat, first bearing, First Five-Year Plan slot reel, the first key, the first self-locking nut and drive shaft, the drive shaft are connected to motor, and pacify at the both ends of drive shaft Equipped with first bearing, first bearing is mounted in first bearing seat, is cased with the one or five slot reel, the one or five slot volume on the driving shaft Cylinder is fixed on the driving shaft by the first key, and the first self-locking nut is cased with outside the first key, and the driven wheel includes second bearing Seat, driven shaft, the second key, the two or five slot reel, the second self-locking nut, second bearing are equipped with second at the both ends of driven shaft Bearing, second bearing are mounted in second bearing seat, are cased with the two or five slot reel on driven shaft, and the two or five slot reel passes through the Two keys are fixed on driven shaft, and the second self-locking nut is cased with outside the second key, and wirerope is rolled up in the one or five slot reel and the two or five slot Spiral winding on cylinder.

2. maritime platform large-sized steel drag chain system performance test traction device according to claim 1, feature exist In: the top end holder unit is steel frame construction, is equipped with fixed pulley and at least two directive wheels on top end holder unit top, The angle of the axis of the axis and directive wheel of fixed pulley is 90 °, and wirerope enters in the groove of fixed pulley after being pierced by from driven wheel, so Directive wheel is passed through afterwards.

3. maritime platform large-sized steel drag chain system performance test traction device according to claim 1, feature exist In: the support Follow-up vehicle unit is steel frame construction, and two sides are equipped with 2n+1 thread, and n is positive integer, and the screw thread is drawn Bar includes nut, pull rod and pulling buckle, and pull rod is connect after passing through support Follow-up vehicle unit with nut, and tie rod end is connect with pulling buckle, Wirerope is mounted in pulling buckle.

4. maritime platform large-sized steel drag chain system performance test traction device according to claim 1, feature exist In: the drag chain includes several outer link units, several internal chaining units and a pair of base unit, the internal chaining unit Two sides it is hinged with outer link unit respectively, the outer link unit at both ends is hinged with a base unit respectively；The outer link Unit includes a pair of of outer plate and exterior chain guide plate, and two outer plates pass through a pair of of exterior chain guide plate connection, a pair of of exterior chain guide plate and one It is sheet metal designing part to outer plate, several the first lateral chain bars is connected separately between a pair of of outer plate, each outer The two sides of carrier bar are mounted on articulated shaft, are equipped with pin shaft along hingedly axisymmetric；The internal chaining unit includes chain in one pair Chain guide plate in plate and one pair, for a pair of of inner plate by chain guide plate connection in one pair, inner plate and interior chain guide plate are sheet metal designing Part is equipped with several the second lateral chain bars between a pair of of inner plate, is equipped in the two sides of inner plate corresponding with articulated shaft Hinge hole, set on inner plate there are two with pin shaft cooperation arc groove, center of circle center pair of two arc grooves about hinge hole Claim, pin shaft is inserted into arc groove.

5. maritime platform large-sized steel drag chain system performance test traction device according to claim 4, feature exist In: the outer plate includes exterior chain outside plate and exterior chain inner panel, and fixture block, the interior chain are equipped between exterior chain outside plate and exterior chain inner panel Plate is between exterior chain outside plate and exterior chain inner panel, and articulated shaft sequentially passes through exterior chain outside plate, inner plate and exterior chain inner panel, and pin shaft is successively Across exterior chain outside plate, inner plate and exterior chain inner panel, pin shaft is located in arc groove.

6. maritime platform large-sized steel drag chain system performance test traction device according to claim 4, feature exist In: the pair of exterior chain guide plate is connected by several first vertical chain bars, and chain guide plate is connected by the second vertical chain bar in one pair It connects, the first vertical chain bar, the second vertical chain bar, the first lateral chain bar and the second lateral chain bar are by exterior chain guide plate and interior chain guide plate shape At space be divided into several grids.

7. maritime platform large-sized steel drag chain system performance test traction device according to claim 4, feature exist In: the base unit includes a pair of base plate, and two base plates are connected by several pedestal guide plates, set on pedestal guide plate There is the waist-shaped hole of several losss of weight.