CN105129642B - A kind of Lever Blocks structure - Google Patents

Abstract

The present invention relates to technical field of crane equipment, specially a kind of Novel lever block structure, the front wallboard and rear wall plate being oppositely arranged including time interval, chain hoist wheel is provided between front wallboard and rear wall plate, the major axis stretched out in front-rear direction is connected with chain hoist wheel, on major axis arrangement of clutch is connected with the position of the front side of front wallboard, arrangement of clutch is externally provided with the wrench device for being connected and coordinating with arrangement of clutch with front wallboard, it is located between front wallboard and rear wall plate above chain hoist wheel and is connected with upper support bar, hook is connected with upper support bar, the sagging hoisting chain of down either side to the left and right is wound with chain hoist wheel, wherein one end of side is connected with suspension hook as load end in the hoisting chain left and right sides and one end of opposite side is used as loose end to connect limited location draw ring, chain guide device is additionally provided between front wallboard and rear wall plate, use safety and stability, load capacity is strong, it is not easily damaged, the high guide effect again of fluency is good.

Description

A kind of Lever Blocks structure

Technical field

The present invention relates to technical field of crane equipment, specially a kind of Novel lever block structure.

Background technology

Lever Blocks is to pull spanner by manpower manual, and by lever principle, so as to obtain what is matched with load Straight line tractive force, is moved up and down so as to drive weight to realize.Due to Lever Blocks small volume, lightweight, therefore carry and operate It is all very convenient, it is adaptable to the weight of smaller tonnage, existing Lever Blocks, due to the relation of this body structure, distribution of force is also not Enough optimization, load capacity is strong not enough, stablizes also smooth not enough during operation not enough, running is easily to load or hand Pull cucurbit and easily cause damage in itself, service life is long not enough, and structure is typically more complicated, operate more time-consuming, work The switching underaction of state, braking effect is not good, and the wherein distribution of force such as chain guide device also optimizes not enough, and load capacity is also It is not strong enough, stablize also smooth not enough during operation not enough, running is easily easily made in itself to load or Lever Blocks Into damage, service life is long not enough, and guidance quality is poor, and guide effect is not good, easily occur increase beat, not only influence operation and And there is potential safety hazard.

The content of the invention

It is an object of the present invention to provide one kind using safety and stability, load capacity be strong, not easily damaged, fluency is high again The good Novel lever block structure of guide effect.

The present invention above-mentioned technical purpose technical scheme is that：A kind of Novel lever block knot Structure, including the front wallboard and rear wall plate that time interval is oppositely arranged, are provided with chain hoist wheel, institute between the front wallboard and rear wall plate State and connected on the major axis for being connected with and stretching out in front-rear direction on chain hoist wheel, the major axis on the position of the front side of front wallboard There is arrangement of clutch, the arrangement of clutch is externally provided with the wrench device for being connected and coordinating with the arrangement of clutch with front wallboard, described It is located to be connected with upper support bar, the upper support bar above chain hoist wheel between front wallboard and rear wall plate and is connected with hook, It is wound with the chain hoist wheel wherein one in the sagging hoisting chain of down either side to the left and right, the hoisting chain left and right sides One end of side is connected with suspension hook as load end and one end of opposite side as loose end connects limited location draw ring, and arrangement of clutch includes The brake seat being connected is installed with the major axis of Lever Blocks, the major axis passes through the front wallboard of Lever Blocks, the brake seat Positioned at the front side of front wallboard, brake seat includes bottom disk and extends the installation disk formed, the peace from bottom disk to front side The periphery of disk is filled from bottom disk to front side to being arranged with the first friction plate, ratchet and the second friction plate, the major axis successively On be also equipped with being located on front side of the second friction plate and with the braking spiral shell against plane that can lean with second friction plate Corresponding annular groove is offered on mother, the sidepiece for installing disk and stop-nut opposite side and is respectively implanted a clutch bullet The termination of the rear and front end of spring, stop-nut periphery position is arranged in the wrench device of Lever Blocks and its front end position Handwheel is also associated with, handwheel is provided with the protruding reinforcing rib for being used for being connected with the front end position of stop-nut, and arrangement of clutch is also wrapped Include two by detent pin be arranged on front wallboard on the ratchet being meshed with ratchet, two detent pins using major axis as Central shaft is centrosymmetric, and has multiple thread on the surface of major axis, and bottom disk is opened vertically with the centre for installing disk The confession major axis being communicated with passes through and is arranged on the center mounting hole on the multiple thread of major axis, the centre edge of stop-nut Axially offer can be set on the multiple thread of major axis and along major axis by spinning movement can before and after retreat center move Hole, the forward end of major axis is provided with channel nut, and handwheel, which is set on major axis, to be located between channel nut and stop-nut On position, channel nut by the way that on split pin fixation and major axis, the outside dimension of bottom disk is more than the diameter dimension for installing disk, Chain guide device is additionally provided between front wallboard and rear wall plate, the chain guide device includes the front wallboard and rear wall for being arranged on Lever Blocks The first guider for being used to be oriented to the Song Duan sides of the hoisting chain of Lever Blocks between plate, for opponent pull calabash The second guider and coordinate the first guider to Lever Blocks that the load end side of the hoisting chain of reed is oriented to The 3rd guider that the Song Duan sides of hoisting chain are oriented to, first guider is arranged on the front wall of Lever Blocks The place at the loose end positioned at hoisting chain of chain hoist wheel that is being provided between plate and rear wall plate and being wound with the hoisting chain Side, the second guider is arranged on the side of the load end positioned at hoisting chain of chain hoist wheel, the 3rd guider The position being located between front wallboard and rear wall plate below chain hoist wheel is arranged on, the first guider includes rotatable be oriented to Wheel, forms the guiding clearance for being available for hoisting chain to pass through, the peripheral part of the directive wheel between the directive wheel and chain hoist wheel On offer for hoisting chain by the sidepiece on the outside of chain hoist wheel by and the annular that is oriented to it is oriented to groove, annular Be oriented to groove in for hoisting chain pass through region upper-lower height difference more than hoisting chain link length 1/5th to 3/4ths, the second guider includes guide pad, is formed between the guide pad and chain hoist wheel and is available for hoisting chain to pass through Guiding clearance, the guide pad is provided with for hoisting chain by the sidepiece on the outside of chain hoist wheel by simultaneously by hoisting chain side The guiding groove up and down for being oriented to and being opened up along above-below direction to it, is oriented to the area passed through in groove for hoisting chain up and down Domain upper-lower height difference more than hoisting chain link length 4/5ths, the 3rd guider include to hoisting chain around The deflector apron that the sidepiece in chain hoist wheel side is oriented to is made, the two ends of the deflector apron are in semicircle shape and middle part In isosceles trapezoid shape, in the two ends of the semicircle shape of the deflector apron wherein the radius of one end be more than the other end radius and this two The radius at end is equal with the base of the length of the middle part in isosceles trapezoid shape and short base respectively, and the half of the deflector apron The direction of the big one end in footpath to the small one end of radius sets along oblique upper and points to hoisting chain.

In above-mentioned technical proposal, more preferably, distribution of force is more superior, and structural strength is higher for integrally-built connectivity, fortune Row is more stablized, and is easy to the progress of the load lift work of efficient stable, and load capacity is stronger, and security is higher, also more not Easily impaired, and guidance quality is more preferably, more preferably, wrench device can use structure of the prior art to guide effect, by from The cooperation put with wrench device is attached together, drives the operating of chain hoist wheel to come the final lift work for realizing hoisting chain, spacing drawing Ring not only can carry out the position adjustments of hoisting chain in zero load, while can prevent that hoisting chain is pulled through head, and by with Preferable position-limiting action is played in the effect of front and rear wallboard, and more preferably, structure is relatively easy, and part is few for braking effect, operates more square Just quick, the switching of working condition is more flexible, and arrangement of clutch when in use, rotates in an anti-clockwise direction handwheel, hand when empty Wheel drive stop-nut rotate, make stop-nut produce axial movement, due to placed between brake seat and stop-nut from Spring is closed, the spring is compression spring, brake seat, first, second friction plate, ratchet, braking spiral shell in the presence of elastic force Occur in that and be not in contact with each other between gap, each friction surface between mother, now drop hoisting chain, due to the elasticity of brake spring Power is more than major axis because of axial force formed by rotation so that between being still had between each friction surface of first, second friction plate Gap is not contacted, and such hoisting chain just can be pulled freely, when hoisting chain is loaded, because load acts on the axial direction so that major axis Power is more than the elastic force of brake spring, and brake spring is compressed, brake seat, first, second friction plate, ratchet, stop-nut Between gap would not occur, each rubbing surface abuts against each other braking, prevents hoisting chain from moving, load has been supported, when unloaded Arrestment mechanism can arbitrarily drop hoisting chain in releasing state, once load, arrestment mechanism braking operation immediately, drag chain and work Make the switching simple and flexible between two states, when load operation, hoisting chain pine end each chain link with chain hoist wheel annular groove Engagement operating in can produce inside and outside beat, each chain link and sprocket wheel annular groove are influenced whether if this beat is excessive engages fortune Turn, when the outside beat in the loose end of hoisting chain, the first guider can be controlled accordingly, and the 3rd is oriented to dress during inside beat Put to be controlled accordingly, and the second guider set should be compacter and coordinate chain hoist wheel at any time to hoisting chain Load end carry out the guiding operation without nutation type, the structure is located between front and rear wallboard, not exposed, compact, good concealment, also compared with To be attractive in appearance.

As to the preferred of the present invention, suspension hook is located at the left side of chain hoist wheel, and spacing draw ring is located at the right side of sprocket wheel, front wall Plate is identical with the exterior contour of rear wall plate and includes the minor arc shape edge of the peripheral close hook for being respectively provided with arc-shaped side, positioned at institute State the first left arc edge of minor arc shape edge lower left, the first right arc edge positioned at the minor arc shape edge lower right, Positioned at the second left arc edge of the described first left arc edge lower right and positioned at the described first right arc edge lower right Second right arc edge, the second right arc-shaped side portion be located at the described second left arc edge upper right side, minor arc shape edge and It is connected and the peripheral straight flange in the first left straight flange portion by first left straight flange portion of the periphery with straight flange between first left arc edge Arc-shaped side of the two respectively with minor arc shape edge and the first left arc edge periphery is connected, minor arc shape edge and the first right arc-shaped side Be connected between portion by first right straight flange portion of the periphery with straight flange and the first right straight flange portion periphery straight flange two respectively with master Arc edge is connected with the arc-shaped side of the first right arc edge periphery, leads between the first left arc edge and the second left arc edge Cross second left straight flange portion of the periphery with straight flange be connected and the second left straight flange portion periphery straight flange two respectively with the first left arc Edge is connected with the arc-shaped side of the second left arc edge periphery, by outer between the first right arc edge and the second right arc edge Enclose the second right straight flange portion with straight flange be connected and the second right straight flange portion periphery straight flange two respectively with the first right arc edge It is connected with the arc-shaped side of the second right arc edge periphery, passes through periphery tool between the second left arc edge and the second right arc edge Have straight flange bottom straight flange portion be connected and bottom straight flange portion periphery straight flange two respectively with the second left arc edge and the second right arc The arc-shaped side of edge periphery is connected, and two detent pins are separately positioned at the position in the first left straight flange portion and the second right arc At the position of edge, the first guider is arranged at the position of the second right straight flange portion on the lower, and the second guider is arranged on At the position of first left arc edge, the 3rd guider is arranged at the position of the second left arc edge.Further optimization is tied Structure, connectivity is more preferable so that structural strength is higher, and distribution of force more optimizes, and load capacity is stronger, and braking effect more preferably, is transported Row more safety and stability, is also not easy to cause damage to itself and load, more preferably, guide effect is more preferably for guidance quality.

It is used as preferred, the arc of the first left arc edge, the first right arc edge and the second left arc edge to the present invention The radian and radius on shape side be equal and radian and radius of arc-shaped side of respectively less than minor arc shape edge, the minor arc shape edge The radian and radius of arc-shaped side are respectively less than the radian and radius of the arc-shaped side of the second right arc edge.Further optimize structure, make Structural strength is higher, distribution of force more optimizes, and load capacity is stronger, operation more safety and stability, is also not easy to itself Damage is caused with load.

As to the preferred of the present invention, the length of straight flange in bottom straight flange portion, the length of straight flange in the second right straight flange portion, first left side are straight The length of straight flange of the length of straight flange of edge, the length of straight flange in the first right straight flange portion and the second left straight flange portion becomes larger successively.Enter One-step optimization structure so that structural strength is higher, distribution of force more optimizes, and load capacity is stronger, operation more safety and stability, Also it is not easy to cause itself and load damage.

As to the preferred of the present invention, the first left arc edge, the first right arc-shaped side are located between front wallboard and rear wall plate Portion and the region of the second left arc edge are respectively equipped with the locking device locked along fore-and-aft direction, and the locking device includes spiral shell Bolt and nut.Further optimize structure so that structural strength is higher, distribution of force more optimizes, load capacity is stronger, operation is more Plus safety and stability, also it is not easy to cause itself and load damage.

As to the present invention it is preferred, chain hoist wheel rearward beyond rear wall plate periphery be provided with spline gear, it is described after The region that wallboard is located behind is provided with two short axles with keyway coordinated with the spline gear, the short axle and long axis view Band moving gear and mutually ratcheting connection are rearward carried beyond spline gear one end in chain hoist wheel.So that chain hoist wheel Operating it is more smooth, stably with ensure hoisting chain band dynamic load be more effectively carried out lift work.

Extend as to the preferred of the present invention, being connected with rear side of rear wall plate from minor arc shape edge to the second right arc edge Rear outer cover.One is to play protective action, and two be further optimization structure so that structural strength is higher, and distribution of force is more excellent Change, load capacity is stronger, operation more safety and stability, be also not easy to cause damage to itself and load.

Led as being provided with to the preferred of the present invention, between front wallboard and the first left arc edge of rear wall plate for hoisting chain To guide pad.Effective guiding is carried out to hoisting chain, larger beat is prevented and causes the interruption even safety of operating Problem etc..

As to the preferred of the present invention, guide pad is arranged between front wallboard and rear wall plate positioned at the first left arc edge On the bolt for the locking device that region is provided with.Further optimize structure so that structural strength is higher, distribution of force more optimizes, Load capacity is stronger, operation more safety and stability, is also not easy to cause damage to itself and load.

As to the preferred of the present invention, the reinforcement protective jacket being directly socketed for guide pad is arranged with bolt.Improve assembling The degree of reliability, further optimize structure so that structural strength is higher, distribution of force more optimizes, load capacity is stronger, run More safety and stability, is also not easy to cause damage to itself and load.

Beneficial effects of the present invention：More preferably, distribution of force is more superior, and structural strength is higher for integrally-built connectivity, Operation is more stablized, and is easy to the progress of the load lift work of efficient stable, and load capacity is stronger, and security is higher, also more It is not easy to be damaged, more preferably, structure is relatively easy, and part is few for braking effect, and operation is more convenient, and the switching of working condition is more Plus flexibly, operation fluency is higher, more preferably, guide effect is more preferably for guidance quality.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram of the embodiment of the present invention；

Fig. 2 is the front view of the main part of the embodiment of the present invention；

Fig. 3 is the rearview of the main part of the embodiment of the present invention；

Fig. 4 is the cut-away illustration when main part of the embodiment of the present invention is faced；

Fig. 5 is the dimensional structure diagram of the fractionation in the chain hoist wheel region of the embodiment of the present invention；

Cut-away illustration when Fig. 6 is the side view of the main part of the embodiment of the present invention；

Fig. 7 is the dimensional structure diagram after the arrangement of clutch fractionation of the embodiment of the present invention；

Fig. 8 is that Fig. 7 carries out the schematic diagram after reference again；

Fig. 9 is that Fig. 6 carries out the schematic diagram after reference again；

Figure 10 is that Fig. 5 carries out the schematic diagram after reference again；

Figure 11 is that Fig. 4 carries out the schematic diagram after reference again；

Figure 12 is that Fig. 1 carries out the schematic diagram after reference again.

In figure：1st, front wallboard, 2, rear wall plate, 3, chain hoist wheel, 4, major axis, 5, arrangement of clutch, 6, wrench device, 11, on Support bar, 12, hook, 31, hoisting chain, 32, suspension hook, 33, spacing draw ring, 101, minor arc shape edge, the 102, first left arc Edge, the 103, first right arc edge, the 104, second left arc edge, the 105, second right arc edge, the 106, first left straight flange Portion, the 107, first right straight flange portion, the 108, second left straight flange portion, the 109, second right straight flange portion, 100, bottom straight flange portion, 131, bolt, 132nd, nut, 133, strengthen protective jacket, 14, spline gear, 15, short axle, 16, band moving gear, 17, rear outer cover, 18, guide pad, 51st, brake seat, 511, bottom disk, 512, disk is installed, the 521, first friction plate, 53, ratchet, the 522, second friction plate, 54, Stop-nut, 55, annular groove, 56, brake spring, 57, handwheel, 58, ratchet, 581, detent pin, 5120, center mounting hole, 540th, center moving hole, 59, channel nut, 591, split pin, 71, directive wheel, 710, annular be oriented to groove, 720, be oriented to up and down Groove, 73, deflector apron.

Embodiment

Specific examples below is only explanation of the invention, and it is not limitation of the present invention, art technology Personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but as long as All protected in scope of the presently claimed invention by Patent Law.

Embodiment, as shown in Fig. 1,2,3,4,5,6,7,8,9,10,11,12, a kind of Novel lever block structure, including it is preceding The front wallboard 1 and rear wall plate 2 being oppositely arranged are spaced afterwards, and chain hoist wheel 3, described are provided between the front wallboard 1 and rear wall plate 2 It is connected with the major axis 4 stretched out in front-rear direction, the major axis 4 and is connected on the position of the front side of front wallboard 1 on heavy chain wheel 3 There is arrangement of clutch 5, the arrangement of clutch 5 is externally provided with the wrench device 6 for being connected and coordinating with the arrangement of clutch 5 with front wallboard 1, Top between the front wallboard 1 and rear wall plate 2 positioned at chain hoist wheel 3 is connected with upper support bar 11, the upper support bar 11 It is connected with hook 12, the chain hoist wheel 3 and is wound with the sagging hoisting chain 31 of down either side to the left and right, the hoisting chain Wherein one end of side is connected with suspension hook 32 as load end in 31 left and right sides and one end of opposite side is connected with as loose end Spacing draw ring 33, arrangement of clutch 5 includes installing the brake seat 51 being connected with the major axis 4 of Lever Blocks, and the major axis 4 passes through hand The front wallboard 1 of cucurbit is pulled, the brake seat 51 is located at the front side of front wallboard 1, and brake seat 51 includes bottom disk 511 and the bottom of by Disk 511 extends the installation disk 512 to be formed to front side, the periphery for installing disk 512 from bottom disk 511 to front side to It is arranged with successively on the first friction plate 521, the friction plate 522 of ratchet 53 and second, the major axis 4 and is also equipped with being located at the second friction The front side of piece 522 simultaneously has the stop-nut 54 against plane that can be leant with second friction plate 522, installs disk 512 With offer corresponding annular groove 55 on the sidepiece of the opposite side of stop-nut 54 and be respectively implanted a brake spring 56 The termination of rear and front end, the periphery position of stop-nut 54 is arranged in the wrench device 6 of Lever Blocks and its front end position Handwheel 57 is also associated with, handwheel 57 is provided with the protruding reinforcing rib for being used for being connected with the front end position of stop-nut 54, clutch dress Putting 5 also includes two ratchets 58 being meshed with ratchet 53 by detent pin 581 on front wallboard 1, two institutes State the axle centered on major axis 4 of detent pin 581 to be centrosymmetric, there is multiple thread, bottom disk 511 and peace on the surface of major axis 4 During the confession major axis 4 that the centre of dress disk 512 offers connection vertically is passed through and is arranged on the multiple thread of major axis 4 Heart mounting hole 5120, the centre of stop-nut 54 offer vertically can be set on the multiple thread of major axis 4 and along Major axis by spinning movement can before and after the center moving hole 540 retreated, the forward end of major axis 4 is provided with channel nut 59, hand Wheel 57, which is set on major axis 4, to be located on the position between channel nut 59 and stop-nut 54, and channel nut 59 passes through split pin In 591 fixations and major axis 4, the outside dimension of bottom disk 511 is more than the diameter dimension for installing disk 512, front wallboard 1 and rear wall plate Chain guide device is additionally provided between 2, the chain guide device includes the use being arranged between the front wallboard 1 of Lever Blocks and rear wall plate 2 The first guider for being oriented in the Song Duan sides of the hoisting chain 31 to Lever Blocks, for the lifting to Lever Blocks Hoisting-chain of the second guider and the first guider of cooperation that the load end side of chain 31 is oriented to Lever Blocks The 3rd guider that articles 31 Song Duan sides are oriented to, first guider is arranged on the front wallboard 1 of Lever Blocks The loose end positioned at hoisting chain 31 of chain hoist wheel 3 that is being provided between rear wall plate 2 and being wound with the hoisting chain 31 Side, the second guider is arranged on the side of the load end positioned at hoisting chain 31 of chain hoist wheel 3, and the 3rd leads The position for being located at the lower section of chain hoist wheel 3 between front wallboard 1 and rear wall plate 2 is arranged on to device, the first guider includes rolling Dynamic directive wheel 71, forms the guiding clearance for being available for hoisting chain 31 to pass through between the directive wheel 71 and chain hoist wheel 3, described The sidepiece by the outside of chain hoist wheel 3 offered on the peripheral part of directive wheel 71 for hoisting chain 31 passes through and it is oriented to Annular be oriented to groove 710, annular be oriented to groove 710 in for hoisting chain 31 pass through region upper-lower height difference be more than lifting 3rd/to four/5th of the link length of chain 31, the second guider includes guide pad 18, the He of guide pad 18 The guiding clearance for being available for hoisting chain 31 to pass through is formed between chain hoist wheel 3, the guide pad 18 is set by the side of hoisting chain 31 Have for hoisting chain 31 by the outside of chain hoist wheel 3 sidepiece by and it is oriented to and along above-below direction open up it is upper Lower guiding groove 720, the upper-lower height difference that the region passed through in groove 720 for hoisting chain 31 is oriented to up and down is more than hoisting chain 4/5ths of 31 link length, the 3rd guider includes the side for being wound on the side of chain hoist wheel 3 to hoisting chain 31 The deflector apron 73 that portion is oriented to, the two ends of the deflector apron 73 are in semicircle shape and middle part is in isosceles trapezoid shape, institute Wherein the radius of one end is more than the radius of the other end and the radius difference at the two ends in the two ends for the semicircle shape for stating deflector apron 73 It is equal with the base of the length of the middle part in isosceles trapezoid shape and short base, the big one end of the radius of the deflector apron 73 Set to the direction of the small one end of radius along oblique upper and point to hoisting chain 31.

Suspension hook 32 is located at the left side of chain hoist wheel 3, and spacing draw ring 33 is located at the right side of sprocket wheel, front wallboard 1 and rear wall plate 2 Exterior contour is identical and includes the minor arc shape edge 101 of the peripheral close hook 12 for being respectively provided with arc-shaped side, positioned at the minor arc First left arc edge 102 of the lower left of shape edge 101, the first right arc-shaped side positioned at the lower right of minor arc shape edge 101 Portion 103, the second left arc edge 104 positioned at the described first left lower right of arc edge 102 and positioned at the described first right arc Second right arc edge 105 of the lower right of edge 103, the second right arc edge 105 is located at the described second left arc edge There is the first left straight flange of straight flange between 104 upper right side, the left arc edge 102 of minor arc shape edge 101 and first by periphery Portion 106 be connected and the periphery of the first left straight flange portion 106 straight flange two respectively with the left arc edge of minor arc shape edge 101 and first The arc-shaped sides of 102 peripheries are connected, and pass through the of periphery with straight flange between the right arc edge 103 of minor arc shape edge 101 and first One right straight flange portion 107 be connected and the periphery of the first right straight flange portion 107 straight flange two respectively with the right arc of minor arc shape edge 101 and first The arc-shaped side of the periphery of shape edge 103 is connected, and passes through periphery tool between the first left arc edge 104 of left arc edge 102 and second The the second left straight flange portion 108 for having straight flange be connected and the periphery of the second left straight flange portion 108 straight flange two respectively with the first left arc-shaped side Portion 102 is connected with the arc-shaped side of the second left periphery of arc edge 104, the first right arc edge 105 of right arc edge 103 and second Between be connected by second right straight flange portion 109 of the periphery with straight flange and straight flange two of the periphery of the second right straight flange portion 109 is distinguished It is connected with the arc-shaped side of the periphery of the right arc edge of the first right arc edge 103 and second 105, the second left arc edge 104 and the It is connected and the peripheral straight flange two in bottom straight flange portion 100 by bottom straight flange portion 100 of the periphery with straight flange between two right arc edge 105 Arc-shaped side of the head respectively with the second left right periphery of arc edge 105 of arc edge 104 and second is connected, two detent pins 581 are separately positioned at the position in the first left straight flange portion 106 and at the position of the second right arc edge 105, the first guider It is arranged at the position of the second right straight flange portion 109 on the lower, the second guider is arranged on the position of the first left arc edge 102 Place, the 3rd guider is arranged at the position of the second left arc edge 104.

The radian of first left arc edge 102, the arc-shaped side of the first left arc edge 104 of right arc edge 103 and second The radian and radius of equal with radius and respectively less than minor arc shape edge 101 arc-shaped side, the arc of the minor arc shape edge 101 The radian and radius on side are respectively less than the radian and radius of the arc-shaped side of the second right arc edge 105.The straight flange in bottom straight flange portion 100 is long Degree, the length of straight flange in the second right straight flange portion 109, the length of straight flange in the first left straight flange portion 106, the straight flange in the first right straight flange portion 107 Length and the length of straight flange in the second left straight flange portion 108 become larger successively.

It is located at the first left arc edge 102, the first left arc of right arc edge 103 and second between front wallboard 1 and rear wall plate 2 The region of shape edge 104 is respectively equipped with the locking device locked along fore-and-aft direction, and the locking device includes bolt 131 and spiral shell Cap 132.Chain hoist wheel 3 is rearward provided with spline gear 14, the area that the rear wall plate 2 is located behind beyond the periphery of rear wall plate 2 Domain is located at hoisting-chain provided with two short axles 15 with keyway coordinated with the spline gear 14, the short axle 15 and major axis 4 The one end of spline gear 14 that rearward exceeds of wheel 3 carries band moving gear 16 and mutually ratcheting connection.

The rear side of rear wall plate 2 is connected with the rear outer cover 17 extended from minor arc shape edge 101 to the second right arc edge 105. The guide pad 18 being oriented to for hoisting chain 31 is provided between front wallboard 1 and the first left arc edge 102 of rear wall plate 2.Guide pad 18 are arranged on the bolt for the locking device being provided between front wallboard 1 and rear wall plate 2 positioned at the region of the first left arc edge 102 On 131.The reinforcement protective jacket 133 being directly socketed for guide pad 18 is arranged with bolt 131.

Claims (4)

1. a kind of Lever Blocks structure, it is characterised in that：The front wallboard being oppositely arranged including time interval（1）And rear wall plate（2）, The front wallboard（1）And rear wall plate（2）Between be provided with chain hoist wheel（3）, the chain hoist wheel（3）On be connected with front-rear direction The major axis of stretching（4）, the major axis（4）It is upper to be located at front wallboard（1）Front side position on be connected with arrangement of clutch（5）, it is described Arrangement of clutch（5）It is externally provided with and front wallboard（1）Connect and with the arrangement of clutch（5）The wrench device of cooperation（6）, the front wall Plate（1）And rear wall plate（2）Between be located at chain hoist wheel（3）Top be connected with upper support bar（11）, the upper support bar（11） On be connected with hook（12）, the chain hoist wheel（3）On be wound with the sagging hoisting chain of down either side to the left and right（31）, it is described Hoisting chain（31）Wherein one end of side is connected with suspension hook as load end in the left and right sides（32）And one end of opposite side is made Limited location draw ring is connected for loose end（33）, arrangement of clutch（5）Including the major axis with Lever Blocks（4）The brake seat of connection is installed （51）, the major axis（4）Through the front wallboard of Lever Blocks（1）, the brake seat（51）Positioned at front wallboard（1）Front side, Brake seat（51）Including bottom disk（511）With by bottom disk（511）Extend the installation disk to be formed to front side（512）, it is described Disk is installed（512）Periphery by bottom disk（511）To front side to being arranged with the first friction plate successively（521）, ratchet（53） With the second friction plate（522）, the major axis（4）On be also equipped be located at the second friction plate（522）Front side and with can with it is described Second friction plate（522）The stop-nut against plane leant（54）, disk is installed（512）And stop-nut（54）Relatively Corresponding annular groove is offered on the sidepiece of side（55）And it is respectively implanted a brake spring（56）Rear and front end end Head, the stop-nut（54）Periphery position is arranged at the wrench device of Lever Blocks（6）Upper and its front end position is also associated with Handwheel（57）, handwheel（57）Being provided with is used for and stop-nut（54）Front end position connection protruding reinforcing rib, arrangement of clutch （5）Also pass through detent pin including two（581）Installed in front wallboard（1）On and ratchet（53）The ratchet being meshed （58）, two detent pins（581）With major axis（4）Centered on axle be centrosymmetric, major axis（4）Surface on have bull spiral shell Line, bottom disk（511）With installation disk（512）Centre offer the confession major axis of connection vertically（4）Pass through and install In major axis（4）Multiple thread on center mounting hole（5120）, stop-nut（54）Offer vertically can in centre It is set in major axis（4）Multiple thread on and along major axis by spinning movement can before and after retreat center moving hole（540）, it is long Axle（4）Forward end channel nut is installed（59）, handwheel（57）It is set in major axis（4）It is upper to be located at channel nut（59）And system Dynamic nut（54）Between position on, channel nut（59）Pass through split pin（591）It is fixed on major axis（4）On, bottom disk（511） Outside dimension be more than install disk（512）Diameter dimension, front wallboard（1）And rear wall plate（2）Between be additionally provided with chain guide device, The chain guide device includes the front wallboard for being arranged on Lever Blocks（1）And rear wall plate（2）Between be used for Lever Blocks is risen Heavy chain bar（31）Song Duan sides be oriented to the first guider, for the hoisting chain to Lever Blocks（31）Load Hoisting chain of the second guider and the first guider of cooperation that end side is oriented to Lever Blocks（31）Loose end The 3rd guider that side is oriented to, first guider is arranged on the front wallboard of Lever Blocks（1）And rear wall plate （2）Between be provided with and be wound with the hoisting chain（31）Chain hoist wheel（3）Be located at hoisting chain（31）Loose end Side, the second guider is arranged on chain hoist wheel（3）Be located at hoisting chain（31）Load end side, Three guiders are arranged on front wallboard（1）And rear wall plate（2）Between be located at chain hoist wheel（3）The position of lower section, first is oriented to dress Put including rotatable directive wheel（71）, the directive wheel（71）And chain hoist wheel（3）Between formed be available for hoisting chain（31） The guiding clearance of process, the directive wheel（71）Peripheral part on offer and supply hoisting chain（31）Lean on chain hoist wheel（3）Outside The annular that the sidepiece of side passes through and is oriented to it is oriented to groove（710）, annular guiding groove（710）Interior confession hoisting chain （31）The upper-lower height difference in the region of process is more than hoisting chain（31）Link length 3/1sts to four/5th, second Guider includes guide pad（18）, the guide pad（18）And chain hoist wheel（3）Between formed be available for hoisting chain（31）Through The guiding clearance crossed, the guide pad（18）By hoisting chain（31）Side is provided with and supplies hoisting chain（31）Lean on chain hoist wheel （3）The guiding groove up and down that the sidepiece in outside passes through and is oriented to and opened up along above-below direction to it（720）, it is oriented to up and down Groove（720）Interior confession hoisting chain（31）The upper-lower height difference in the region of process is more than hoisting chain（31）Link length five / tetra-, the 3rd guider is included to hoisting chain（31）Be wound on chain hoist wheel（3）What the sidepiece of side was oriented to Deflector apron（73）, the deflector apron（73）Two ends in semicircle shape and middle part be in isosceles trapezoid shape, the guiding gear Plate（73）Semicircle shape two ends in wherein one end radius be more than the other end radius and the two ends radius respectively with etc. The base of the length of the middle part of waist trapezoidal shape and short base are equal, the deflector apron（73）The big one end of radius to half The direction of the small one end in footpath sets along oblique upper and points to hoisting chain（31）, suspension hook（32）Positioned at chain hoist wheel（3）A left side Side, spacing draw ring（33）Positioned at the right side of sprocket wheel, front wallboard（1）And rear wall plate（2）Exterior contour it is identical and include periphery It is respectively provided with the close hook of arc-shaped side（12）Minor arc shape edge（101）, positioned at the minor arc shape edge（101）The of lower left One left arc edge（102）, positioned at the minor arc shape edge（101）First right arc edge of lower right（103）, positioned at described First left arc edge（102）Second left arc edge of lower right（104）With positioned at the described first right arc edge（103）It is right Second right arc edge of lower section（105）, the second right arc edge（105）Positioned at the described second left arc edge（104） Upper right side, minor arc shape edge（101）With the first left arc edge（102）Between pass through periphery have straight flange the first left straight flange Portion（106）It is connected and the first left straight flange portion（106）Periphery straight flange two respectively with minor arc shape edge（101）With the first left arc Edge（102）The arc-shaped side of periphery is connected, minor arc shape edge（101）With the first right arc edge（103）Between pass through periphery tool There is the first right straight flange portion of straight flange（107）It is connected and the first right straight flange portion（107）Periphery straight flange two respectively with main arc-shaped side Portion（101）With the first right arc edge（103）The arc-shaped side of periphery is connected, the first left arc edge（102）With the second left arc Edge（104）Between pass through periphery have straight flange the second left straight flange portion（108）It is connected and the second left straight flange portion（108）Periphery Straight flange two respectively with the first left arc edge（102）With the second left arc edge（104）The arc-shaped side of periphery is connected, and first is right Arc edge（103）With the second right arc edge（105）Between pass through periphery have straight flange the second right straight flange portion（109）It is connected And the second right straight flange portion（109）Periphery straight flange two respectively with the first right arc edge（103）With the second right arc edge （105）The arc-shaped side of periphery is connected, the second left arc edge（104）With the second right arc edge（105）Between pass through periphery tool There is the bottom straight flange portion of straight flange（100）It is connected and bottom straight flange portion（100）Periphery straight flange two respectively with the second left arc edge （104）With the second right arc edge（105）The arc-shaped side of periphery is connected, two detent pins（581）It is separately positioned on first Left straight flange portion（106）Position at and the second right arc edge（105）Position at, it is right straight that the first guider is arranged on second Edge（109）At position on the lower, the second guider is arranged on the first left arc edge（102）Position at, the 3rd leads The second left arc edge is arranged on to device（104）Position at, the first left arc edge（102）, the first right arc edge （103）With the second left arc edge（104）Arc-shaped side radian and radius is equal and respectively less than minor arc shape edge（101）'s The radian and radius of arc-shaped side, the minor arc shape edge（101）Arc-shaped side radian and radius be respectively less than the second right arc-shaped side Portion（105）Arc-shaped side radian and radius, bottom straight flange portion（100）Length of straight flange, the second right straight flange portion（109）Straight flange it is long Degree, the first left straight flange portion（106）Length of straight flange, the first right straight flange portion（107）Length of straight flange and the second left straight flange portion（108） Length of straight flange become larger successively, front wallboard（1）And rear wall plate（2）Between be located at the first left arc edge（102）, it is first right Arc edge（103）With the second left arc edge（104）Region be respectively equipped with the locking device locked along fore-and-aft direction, institute Stating locking device includes bolt（131）And nut（132）, chain hoist wheel（3）Rearward exceed rear wall plate（2）Periphery provided with flower Key teeth wheel（14）, the rear wall plate（2）The region being located behind is provided with two and the spline gear（14）What is coordinated carries key The short axle of groove（15）, the short axle（15）And major axis（4）Positioned at chain hoist wheel（3）Rearward exceed spline gear（14）One end Carry band moving gear（16）And mutually ratcheting connection, front wallboard（1）And rear wall plate（2）The first left arc edge（102）It Between provided with supplying hoisting chain（31）The guide pad of guiding（18）.

2. a kind of Lever Blocks structure according to claim 1, it is characterised in that：Rear wall plate（2）Rear side be connected with by Minor arc shape edge（101）To the second right arc edge（105）The rear outer cover of extension（17）.

3. a kind of Lever Blocks structure according to claim 1, it is characterised in that：Guide pad（18）It is arranged on front wallboard （1）And rear wall plate（2）Between be located at the first left arc edge（102）The bolt of locking device that is provided with of region（131）On.

4. a kind of Lever Blocks structure according to claim 3, it is characterised in that：Bolt（131）On be arranged with for be oriented to Block（18）The reinforcement protective jacket being directly socketed（133）.