CN204917783U - Novel lever block structure - Google Patents

Abstract

(B, ) the utility model relates to a hoisting equipment technical field, specifically be a novel lever block structure, including relative preceding wallboard that sets up in front and back interval and back wallboard, be equipped with hoisting chain wheel between preceding wallboard and the back wallboard, the last major axis that stretches out to the fore -and -aft direction that is connected with of hoisting chain wheel, be connected with clutch on the major axis before lieing in on the position of front side of wallboard, clutch be equipped with outward with preceding wallboard be connected and with clutch complex wrench device, the top that lies in hoisting chain wheel between preceding wallboard and the back wallboard is connected with the bracing piece, upward be connected with the couple on the bracing piece, the flagging load chain in the oriented left and right sides of the last coiling of hoisting chain wheel below, in the load chain left and right sides wherein the one end of one side be connected with the lifting hook as the load end and the one end of opposite side is connected with spacing pull ring as the pine end, still be equipped with chain guard device between preceding wallboard and the back wallboard, stability safe in utilization, bearing force is strong, be difficult for impairedly, smoothness degree height guiding effect again is good. (B, )

Description

A kind of Novel lever block structure

Technical field

the utility model relates to technical field of crane equipment, is specially a kind of Novel lever block structure.

Background technology

lever Blocks pulls spanner by manpower manual, and by lever principle, thus obtain the straight line tractive force matched with load, thus drive weight to realize moving up and down.Because Lever Blocks volume is little, lightweight, therefore carry and operate all very convenient, be applicable to the weight of less tonnage, existing Lever Blocks, due to the relation of this body structure, distribution of force is optimized not enough, load-carrying capacity is strong not enough, stable not enough also smooth and easy not enough during operation, operational process easily easily causes damage to load or Lever Blocks itself, service life is long not enough, structure is general more complicated, operation is compared wastes time and energy, the switching underaction of mode of operation, braking effect is not good, wherein the distribution of force such as chain guide device is also optimized not enough, load-carrying capacity is strong not enough, stable not enough also smooth and easy not enough during operation, operational process easily easily causes damage to load or Lever Blocks itself, service life is long not enough, guidance quality is poor, guide effect is not good, easy appearance strengthens beat, not only affect operation but also there is potential safety hazard.

Utility model content

an object of the present utility model is to provide that a kind of use safety is stablized, load-carrying capacity by force, the Novel lever block structure that not easily damaged, the high guide effect again of fluency is good.

above-mentioned technical purpose of the present utility model is achieved by the following technical programs: a kind of Novel lever block structure, comprise front wallboard and the rear wall plate that interval, front and back is oppositely arranged, chain hoist wheel is provided with between described front wallboard and rear wall plate, described chain hoist wheel is connected with the major axis stretching out in front-rear direction, described major axis is positioned on the position of front side of front wallboard and is connected with arrangement of clutch, described arrangement of clutch is provided with the wrench device that is connected with front wallboard and coordinates with described arrangement of clutch outward, the top that is positioned at chain hoist wheel between described front wallboard and rear wall plate is connected with upper support bar, described upper support bar is connected with hook, described chain hoist wheel is wound with the sagging hoisting chain of down either side to the left and right, in the described hoisting chain left and right sides, wherein one end of side is connected with suspension hook as load end and one end of opposite side is connected with spacing draw ring as pine end, the major axis that arrangement of clutch comprises with Lever Blocks is installed the brake seat being connected, described major axis is through the front wallboard of Lever Blocks, described brake seat is positioned at the front side of front wallboard, the installation disk that brake seat comprises end disk and extended to form to front side by end disk, the periphery of described installation disk by end disk to front side to being arranged with the first friction plate successively, ratchet and the second friction plate, described major axis is also provided with and is positioned at the second friction plate front side and there is the stop-nut against plane that can lean with described the second friction plate, disk and stop-nut are installed relative to offering corresponding annular groove on the sidepiece of side and inserting respectively the termination of rear and front end of a brake spring, position, described stop-nut periphery is arranged in the wrench device of Lever Blocks and its position, front end is also connected with handwheel, handwheel is provided with the protruding reinforcing rib for being connected with the position, front end of stop-nut, arrangement of clutch also comprises two ratchets that are all meshed with ratchet that are all arranged on by detent pin on front wallboard, two described detent pin axle centered by major axis is centrosymmetric, the surface of major axis has multiple thread, end disk and install that the centre of disk offers connection vertically pass and be arranged on the center mounting hole on the multiple thread of major axis for major axis, the centre of stop-nut offer vertically on the multiple thread that major axis can be set in and along major axis by spinning movement can before and after the center moving hole of advance and retreat, the forward end of major axis is provided with channel nut, handwheel sleeve is located on major axis on the position between channel nut and stop-nut, channel nut is fixed on major axis by split pin, the outside dimension of end disk is greater than the diameter dimension that disk is installed, chain guide device is also provided with between front wallboard and rear wall plate, described chain guide device comprises the first guider leading in the Song Duan side for the hoisting chain to Lever Blocks between the front wallboard and the rear wall plate that are arranged on Lever Blocks, for the second guider being led in the load end side of the hoisting chain of Lever Blocks and the 3rd guider that coordinates the first guider to lead to the Song Duan side of the hoisting chain of Lever Blocks, described the first guider is arranged on the side of the pine end that is positioned at hoisting chain of chain hoist wheel that is that be provided with and that be wound with described hoisting chain between the front wallboard of Lever Blocks and rear wall plate,The second guider is arranged on the side of the load end that is positioned at hoisting chain of chain hoist wheel, 3rd guider is arranged on the position that is positioned at chain hoist wheel below between front wallboard and rear wall plate, the first guider comprises rotatable directive wheel, between described directive wheel and chain hoist wheel, forming can for the guiding clearance of hoisting chain process, the peripheral part of described directive wheel offers for the sidepiece process by chain hoist wheel outside of hoisting chain the annular direction recess that it is led, upper-lower height difference for the region of hoisting chain process in annular direction recess be greater than hoisting chain link length 1/5th to 3/4ths, the second guider comprises guide pad, between described guide pad and chain hoist wheel, forming can for the guiding clearance of hoisting chain process, described guide pad is provided with for the sidepiece process by chain hoist wheel outside of hoisting chain the direction recess up and down that it is led and is offered along above-below direction by hoisting chain side, up and down in direction recess the upper-lower height difference for the region of hoisting chain process be greater than hoisting chain link length 4/5ths, 3rd guider comprises the deflector apron that the sidepiece that is wound on chain hoist wheel side to hoisting chain leads, the two ends of described deflector apron in semicircle shape and middle part in isosceles trapezoid shape, in the two ends of the semicircle shape of described deflector apron wherein the radius of one end to be greater than the radius of the other end and the radius at this two ends equal with the base of the length of the middle part in isosceles trapezoid shape and short base respectively, the direction of one end to little one end of radius that the radius of described deflector apron is large arranges and points to hoisting chain along oblique upper.

in technique scheme, integrally-built connectivity is better, distribution of force is more superior, structural strength is higher, run more stable, be convenient to the carrying out of the load lift work of efficient stable, load-carrying capacity is stronger, safety is higher, also be more not easy impaired, and guidance quality is better, guide effect is better, wrench device can adopt structure of the prior art, by the cooperation of arrangement of clutch and wrench device, the running of chain hoist wheel is driven finally to realize the lift work of hoisting chain, spacing draw ring not only can carry out the position adjustments of hoisting chain when zero load, hoisting chain can be prevented to be pulled through head simultaneously, and by playing good position-limiting action with the effect of front and back wallboard, braking effect is better, structure is relatively simple, part is few, faster and more convenient operation, the switching of mode of operation is more flexible, arrangement of clutch in use, anticlockwise direction rotates handwheel when empty, handwheel drives stop-off nut to rotate, stop-off nut is produced move axially, owing to placed brake spring between brake seat and stop-off nut, this spring is Compress Spring, brake seat under the effect of elastic force, first, second friction lining, ratchet, gap has all been there is between stop-off nut, be not in contact with each other between each friction surface, now drop hoisting chain, elastic force due to brake spring is greater than the axial force that major axis is formed because of rotation, make first, still there is gap between each friction surface of the second friction lining not contact, such hoisting chain just can freely pull, when hoisting chain load, because load effect makes the axial force of major axis be greater than the elastic force of brake spring, brake spring is compressed, brake seat, first, second friction lining, ratchet, gap would not be there is between stop-off nut, each friction face abuts against each other braking, hoisting chain is stoped to move, support load, time unloaded, stop mechanism is in the state of getting loose, arbitrarily can drop hoisting chain, once load, stop mechanism is braking operation immediately, drag the switching simple and flexible between chain and work two states, when load operation, hoisting chain pine end each chain link with chain hoist wheel annular groove engage operate in can produce inside and outside beat, each chain link will be had influence on operate if this beat is excessive with engaging of sprocket wheel annular groove, when the hoisting chain pine outside beat of end, the first guide piece can control accordingly, during inside beat, the 3rd guide piece can control accordingly, and the second guide piece is arranged should be compacter and coordinate chain hoist wheel to carry out the guiding operation without nutation type to the load end of hoisting chain at any time, this structure is positioned between the wallboard of front and back, do not expose, compact, good concealment, also comparatively attractive in appearance.

as to preferably of the present utility model, suspension hook is positioned at the left side of chain hoist wheel, spacing draw ring is positioned at the right side of sprocket wheel, front wallboard is identical with the exterior contour of rear wall plate and include the peripheral minor arc shape edge near hook all with arc-shaped side, be positioned at the first left arc edge of described minor arc shape edge lower left, be positioned at the bottom-right first right arc edge of described minor arc shape edge, be positioned at the bottom-right second left arc edge of described first left arc edge and be positioned at the bottom-right second right arc edge of described first right arc edge, described second right arc-shaped side portion is positioned at the upper right side of described second left arc edge, to be connected by the peripheral first left straight flange portion with straight flange between minor arc shape edge and the first left arc edge and straight flange two of the first periphery, left straight flange portion is connected with the arc-shaped side of minor arc shape edge with the first left arc edge periphery respectively, to be connected by the peripheral first right straight flange portion with straight flange between minor arc shape edge and the first right arc edge and straight flange two of the first periphery, right straight flange portion is connected with the arc-shaped side of minor arc shape edge with the first right arc edge periphery respectively, be connected by the peripheral second left straight flange portion with straight flange between first left arc edge and the second left arc edge and straight flange two of the second periphery, left straight flange portion respectively arc edge left with first be connected with the arc-shaped side of the second left arc edge periphery, be connected by the peripheral second right straight flange portion with straight flange between first right arc edge and the second right arc edge and straight flange two of the second periphery, right straight flange portion respectively arc edge right with first be connected with the arc-shaped side of the second right arc edge periphery, be connected by the peripheral straight flange portion, the end with straight flange between second left arc edge and the second right arc edge and straight flange two of periphery, straight flange portion, the end respectively arc edge left with second be connected with the arc-shaped side of the second right arc edge periphery, two described detent pin are separately positioned on the position in the first left straight flange portion and the position of the second right arc edge, first guide piece is arranged on the second position on the lower, right straight flange portion, second guide piece is arranged on the position of the first left arc edge, 3rd guide piece is arranged on the position of the second left arc edge.Optimize structure further, connectivity is better, and make structural strength higher, distribution of force is optimized more, and load-carrying capacity is stronger, and braking effect is better, runs safety and stability more, and be also not easy to cause damage to itself and load, guidance quality is better, and guide effect is better.

as to preferably of the present utility model, the radian of the arc-shaped side of the first left arc edge, the first right arc edge and the second left arc edge is all equal with radius and be all less than radian and the radius of the arc-shaped side of minor arc shape edge, and the radian of the arc-shaped side of described minor arc shape edge and radius are all less than radian and the radius of the arc-shaped side of the second right arc edge.Optimize structure further, make structural strength higher, distribution of force is optimized more, and load-carrying capacity is stronger, runs safety and stability more, is also not easy to cause damage to itself and load.

as to preferably of the present utility model, the length of straight flange in the length of straight flange in straight flange portion, the end, the length of straight flange in the second right straight flange portion, the length of straight flange in the first left straight flange portion, the length of straight flange in the first right straight flange portion and the second left straight flange portion becomes large successively gradually.Optimize structure further, make structural strength higher, distribution of force is optimized more, and load-carrying capacity is stronger, runs safety and stability more, is also not easy to cause damage to itself and load.

as to preferably of the present utility model, the region being positioned at the first left arc edge, the first right arc edge and the second left arc edge between front wallboard and rear wall plate is respectively equipped with the latching device of locking along fore-and-aft direction, and described latching device comprises bolt and nut.Optimize structure further, make structural strength higher, distribution of force is optimized more, and load-carrying capacity is stronger, runs safety and stability more, is also not easy to cause damage to itself and load.

as to preferably of the present utility model, the periphery that chain hoist wheel rearward exceeds rear wall plate is provided with spline gear, the region that described rear wall plate is positioned at rear is provided with two minor axises with keyway coordinated with described spline gear, and what described minor axis and major axis were positioned at chain hoist wheel rearward exceeds spline gear one end all with driven gear and mutual meshing connection.Make the running of chain hoist wheel more smooth, stable to ensure that the dynamic load of hoisting chain band more effectively carries out lift work.

as to preferably of the present utility model, the rear side of rear wall plate is connected with the rear outer cover extended to the second right arc edge by minor arc shape edge.One is play protective action, and two is optimize structure further, and make structural strength higher, distribution of force is optimized more, and load-carrying capacity is stronger, runs safety and stability more, is also not easy to cause damage to itself and load.

as to preferably of the present utility model, between front wallboard and the first left arc edge of rear wall plate, be provided with the orienting lug for hoisting chain guiding.Actv. guiding is carried out to hoisting chain, prevents larger beat and cause interruption even safety problem etc. of running.

as to preferably of the present utility model, orienting lug is arranged on the bolt of the latching device that the region that is positioned at the first left arc edge between front wallboard and rear wall plate is provided with.Optimize structure further, make structural strength higher, distribution of force is optimized more, and load-carrying capacity is stronger, runs safety and stability more, is also not easy to cause damage to itself and load.

as to preferably of the present utility model, bolt is arranged with the reinforcement protecting jacket be directly socketed for orienting lug.Improve the degree of reliability of assembling, optimize structure further, make structural strength higher, distribution of force is optimized more, and load-carrying capacity is stronger, runs safety and stability more, is also not easy to cause damage to itself and load.

the beneficial effects of the utility model: integrally-built connectivity is better, and distribution of force is more superior, and structural strength is higher, run more stable, be convenient to the carrying out of the load lift work of efficient stable, load-carrying capacity is stronger, safety is higher, and be also more not easy impaired, braking effect is better, structure is relatively simple, and part is few, faster and more convenient operation, the switching of mode of operation is more flexible, run fluency higher, guidance quality is better, and guide effect is better.

Accompanying drawing explanation

fig. 1 is the perspective view of the utility model embodiment;

fig. 2 is the front elevation of the base portion of the utility model embodiment;

fig. 3 is the back view of the base portion of the utility model embodiment;

fig. 4 is the cut-away illustration of the base portion of the utility model embodiment when facing;

fig. 5 is the perspective view of the fractionation in the chain hoist wheel region of the utility model embodiment;

cut-away illustration when Fig. 6 is the side-looking of the base portion of the utility model embodiment;

fig. 7 is the perspective view after the arrangement of clutch of the utility model embodiment splits;

fig. 8 is the schematic diagram after Fig. 7 carries out again Reference numeral;

fig. 9 is the schematic diagram after Fig. 6 carries out again Reference numeral;

figure 10 is the schematic diagram after Fig. 5 carries out again Reference numeral;

figure 11 is the schematic diagram after Fig. 4 carries out again Reference numeral;

figure 12 is the schematic diagram after Fig. 1 carries out again Reference numeral.

in figure: 1, front wallboard, 2, rear wall plate, 3, chain hoist wheel, 4, major axis, 5, arrangement of clutch, 6, wrench device, 11, upper support bar, 12, hook, 31, hoisting chain, 32, suspension hook, 33, spacing draw ring, 101, minor arc shape edge, 102, first left arc edge, 103, first right arc edge, 104, second left arc edge, 105, second right arc edge, 106, first left straight flange portion, 107, first right straight flange portion, 108, second left straight flange portion, 109, second right straight flange portion, 100, straight flange portion, the end, 131, bolt, 132, nut, 133, strengthen protecting jacket, 14, spline gear, 15, minor axis, 16, driven gear, 17, rear outer cover, 18, orienting lug, 51, brake seat, 511, end disk, 512, disk is installed, 521, first friction lining, 53, ratchet, 522, second friction lining, 54, stop-off nut, 55, annular groove, 56, brake spring, 57, handwheel, 58, ratchet, 581, detent pin, 5120, center mounting hole, 540, center moving hole, 59, throttled nut, 591, spring cotter, 71, track adjusting wheel, 710, annular direction recess, 720, upper and lower direction recess, 73, deflector apron.

Detailed description of the invention

following specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification sheets, as long as but be all subject to the protection of patent law in right of the present utility model.

embodiment, as Fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, shown in 12, a kind of Novel lever block structure, comprise front wallboard 1 and rear wall plate 2 that time interval is oppositely arranged, chain hoist wheel 3 is provided with between described front wallboard 1 and rear wall plate 2, described chain hoist wheel 3 is connected with the major axis 4 stretched out in front-rear direction, the position described major axis 4 being positioned at the front side of front wallboard 1 is connected with arrangement of clutch 5, be provided with outside described arrangement of clutch 5 and be connected and the wrench device 6 coordinated with described arrangement of clutch 5 with front wallboard 1, the top being positioned at chain hoist wheel 3 between described front wallboard 1 and rear wall plate 2 is connected with upper support bar 11, described upper support bar 11 is connected with hook 12, described chain hoist wheel 3 is wound with the sagging hoisting chain of down either side to the left and right 31, one end that in described hoisting chain 31 left and right sides, wherein one end of side is connected with suspension hook 32 and opposite side as load end is connected with spacing draw ring 33 as pine end, arrangement of clutch 5 comprises installs with the major axis 4 of Lever Blocks the brake seat 51 be connected, described major axis 4 is through the front wallboard 1 of Lever Blocks, described brake seat 51 is positioned at the front side of front wallboard 1, the installation disk 512 that brake seat 51 comprises end disk 511 and extended to form to front side by end disk 511, the periphery of described installation disk 512 by end disk 511 to front side to being arranged with the first friction lining 521 successively, ratchet 53 and the second friction lining 522, described major axis 4 is also provided with and is positioned on front side of the second friction lining 522 and there is the stop-off nut 54 against plane that can lean with described second friction lining 522, the sidepiece of installation disk 512 side relative to stop-off nut 54 offers the termination that corresponding annular groove 55 also inserts the rear and front end of a brake spring 56 respectively, in the wrench device 6 that position, described stop-off nut 54 periphery is arranged at Lever Blocks and its position, front end is also connected with handwheel 57, handwheel 57 is provided with the protruding reinforcing rib for being connected with the position, front end of stop-off nut 54, arrangement of clutch 5 also comprises two ratchets 58 be all meshed with ratchet 53 be all arranged on by detent pin 581 on front wallboard 1, two described detent pin 581 axle centered by major axis 4 is centrosymmetric, the surface of major axis 4 has multiple screw thread, the centre of end disk 511 and installation disk 512 offers the major axis 4 that supplies be communicated with vertically and passes and be arranged on the center mounting hole 5120 on the multiple screw thread of major axis 4, the centre of stop-off nut 54 offer vertically can be set in major axis 4 multiple screw thread on and along major axis by spinning movement can before and after retreat center moving hole 540, the forward end of major axis 4 is provided with throttled nut 59, handwheel 57 is set on the position on major axis 4 between throttled nut 59 and stop-off nut 54, throttled nut 59 is fixed on major axis 4 by spring cotter 591, the outside dimension of end disk 511 is greater than the diameter dimension installing disk 512, also chain guide device is provided with between front wallboard 1 and rear wall plate 2, described chain guide device comprises the first guide piece led for the Song Duan side of the hoisting chain 31 to Lever Blocks be arranged between the front wallboard 1 of Lever Blocks and rear wall plate 2, the second guide piece led for the load end side of the hoisting chain 31 to Lever Blocks and the 3rd guide piece coordinating the Song Duan side of the first guide piece to the hoisting chain 31 of Lever Blocks to lead, described first guide piece be arranged on be provided with between the front wallboard 1 of Lever Blocks and rear wall plate 2 and be wound with the chain hoist wheel 3 of described hoisting chain 31 be positioned at hoisting chain 31 pine end side, second guide piece is arranged on the side being positioned at the load end of hoisting chain 31 of chain hoist wheel 3, 3rd guide piece is arranged on the position be positioned between front wallboard 1 and rear wall plate 2 below chain hoist wheel 3, first guide piece comprises rotatable track adjusting wheel 71, being formed between described track adjusting wheel 71 and chain hoist wheel 3 can for the guiding clearance of hoisting chain 31 process, the peripheral part of described track adjusting wheel 71 offers passing through and the annular direction recess 710 that it is led by the sidepiece outside chain hoist wheel 3 for hoisting chain 31, upper-lower height difference for the region of hoisting chain 31 process in annular direction recess 710 is greater than 3/1 to four/5ths of the link length of hoisting chain 31, second guide piece comprises orienting lug 18, being formed between described orienting lug 18 and chain hoist wheel 3 can for the guiding clearance of hoisting chain 31 process, described orienting lug 18 is provided with passing through by the sidepiece outside chain hoist wheel 3 and leading to it and the direction recess up and down 720 offered along above-below direction for hoisting chain 31 by hoisting chain 31 side, upper-lower height difference for the region of hoisting chain 31 process in upper and lower direction recess 720 is greater than 4/5ths of the link length of hoisting chain 31, 3rd guide piece comprises the deflector apron 73 led to the sidepiece being wound on chain hoist wheel 3 side of hoisting chain 31, the two ends of described deflector apron 73 are semicircle shape and middle part is isosceles trapezoid shape, in the two ends of the semicircle shape of described deflector apron 73, wherein the radius of one end is greater than the radius of the other end and the radius at these two ends is equal with short base with the base of the length of the middle part in isosceles trapezoid shape respectively, the direction of the large one end of the radius of described deflector apron 73 to little one end of radius arranges along oblique upper and points to hoisting chain 31.

suspension hook 32 is positioned at the left side of chain hoist wheel 3, spacing draw ring 33 is positioned at the right side of sprocket wheel, front wallboard 1 is identical with the exterior contour of rear wall plate 2 and include the peripheral minor arc shape edge 101 near hook 12 all with arc-shaped side, be positioned at the first left arc edge 102 of described minor arc shape edge 101 lower left, be positioned at the bottom-right first right arc edge 103 of described minor arc shape edge 101, be positioned at the bottom-right second left arc edge 104 of described first left arc edge 102 and be positioned at the bottom-right second right arc edge 105 of described first right arc edge 103, described second right arc edge 105 is positioned at the upper right side of described second left arc edge 104, to be connected by the peripheral first left straight flange portion 106 with straight flange between minor arc shape edge 101 and the first left arc edge 102 and straight flange two of the first periphery, left straight flange portion 106 is connected with the arc-shaped side of minor arc shape edge 101 with the first left arc edge 102 periphery respectively, to be connected by the peripheral first right straight flange portion 107 with straight flange between minor arc shape edge 101 and the first right arc edge 103 and straight flange two of the first periphery, right straight flange portion 107 is connected with the arc-shaped side of minor arc shape edge 101 with the first right arc edge 103 periphery respectively, be connected by the peripheral second left straight flange portion 108 with straight flange between first left arc edge 102 and the second left arc edge 104 and straight flange two of the second periphery, left straight flange portion 108 respectively arc edge 102 left with first be connected with the arc-shaped side of the second left arc edge 104 periphery, be connected by the peripheral second right straight flange portion 109 with straight flange between first right arc edge 103 and the second right arc edge 105 and straight flange two of the second periphery, right straight flange portion 109 respectively arc edge 103 right with first be connected with the arc-shaped side of the second right arc edge 105 periphery, be connected by the peripheral straight flange portion, the end 100 with straight flange between second left arc edge 104 and the second right arc edge 105 and straight flange two of periphery, straight flange portion 100, the end respectively arc edge 104 left with second be connected with the arc-shaped side of the second right arc edge 105 periphery, two described detent pin 581 are separately positioned on the position in the first left straight flange portion 106 and the position of the second right arc edge 105, first guide piece is arranged on the second position on the lower, right straight flange portion 109, second guide piece is arranged on the position of the first left arc edge 102,3rd guide piece is arranged on the position of the second left arc edge 104.

the radian of the arc-shaped side of the first right arc edge 103 of left arc edge 102, first and the second left arc edge 104 is all equal with radius and be all less than radian and the radius of the arc-shaped side of minor arc shape edge 101, and the radian of the arc-shaped side of described minor arc shape edge 101 and radius are all less than radian and the radius of the arc-shaped side of the second right arc edge 105.The length of straight flange in the length of straight flange in straight flange portion, the end 100, 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 length of straight flange in the first right straight flange portion 107 and the second left straight flange portion 108 becomes large successively gradually.

the region being positioned at the first right arc edge 103 of left arc edge 102, first and the second left arc edge 104 between front wallboard 1 and rear wall plate 2 is respectively equipped with the latching device of locking along fore-and-aft direction, and described latching device comprises bolt 131 and nut 132.The periphery that chain hoist wheel 3 rearward exceeds rear wall plate 2 is provided with spline gear 14, the region that described rear wall plate 2 is positioned at rear is provided with two minor axises 15 with keyway coordinated with described spline gear 14, and what described minor axis 15 and major axis 4 were positioned at chain hoist wheel 3 rearward exceeds spline gear 14 one end all with driven gear 16 and mutual meshing connection.

the rear side of rear wall plate 2 is connected with the rear outer cover 17 extended to the second right arc edge 105 by minor arc shape edge 101.The orienting lug 18 led for hoisting chain 31 is provided with between front wallboard 1 and the first left arc edge 102 of rear wall plate 2.Orienting lug 18 is arranged on the bolt 131 of the latching device that the region that is positioned at the first left arc edge 102 between front wallboard 1 and rear wall plate 2 is provided with.Bolt 131 is arranged with the reinforcement protecting jacket 133 be directly socketed for orienting lug 18.

Claims (10)

1. a Novel lever block structure, it is characterized in that: comprise front wallboard (1) and the rear wall plate (2) that interval, front and back is oppositely arranged, chain hoist wheel (3) is provided with between described front wallboard (1) and rear wall plate (2), described chain hoist wheel (3) is connected with the major axis (4) stretching out in front-rear direction, described major axis (4) is positioned on the position of front side of front wallboard (1) and is connected with arrangement of clutch (5), the outer wrench device (6) that is connected with front wallboard (1) and coordinates with described arrangement of clutch (5) that is provided with of described arrangement of clutch (5), the top that is positioned at chain hoist wheel (3) between described front wallboard (1) and rear wall plate (2) is connected with upper support bar (11), described upper support bar (11) is connected with hook (12), described chain hoist wheel (3) is wound with the sagging hoisting chain of down either side to the left and right (31), in described hoisting chain (31) left and right sides, wherein one end of side is connected with suspension hook (32) as load end and one end of opposite side is connected with spacing draw ring (33) as pine end, the major axis (4) that arrangement of clutch (5) comprises with Lever Blocks is installed the brake seat (51) being connected, described major axis (4) is through the front wallboard (1) of Lever Blocks, described brake seat (51) is positioned at the front side of front wallboard (1), the installation disk (512) that brake seat (51) comprises end disk (511) and extended to form to front side by end disk (511), the periphery of described installation disk (512) by end disk (511) to front side to being arranged with the first friction plate (521) successively, ratchet (53) and the second friction plate (522), described major axis (4) is also provided with and is positioned at the second friction plate (522) front side and there is the stop-nut against plane (54) that can lean with described the second friction plate (522), the termination that disk (512) and the sidepiece of the relative side of stop-nut (54) offers the rear and front end that corresponding annular groove (55) is also inserted respectively a brake spring (56) is installed, described stop-nut (54) position, periphery is arranged at upper and its position, front end of the wrench device (6) of Lever Blocks and is also connected with handwheel (57), handwheel (57) is provided with the protruding reinforcing rib being connected for the position, front end with stop-nut (54), arrangement of clutch (5) also comprises two ratchets (58) that are all meshed with ratchet (53) that are all arranged on by detent pin (581) on front wallboard (1), two described detent pin (581) axle centered by major axis (4) is centrosymmetric, the surface of major axis (4) has multiple thread, what end disk (511) and the centre that disk (512) is installed offered connection vertically passes and is arranged on the center mounting hole (5120) on the multiple thread of major axis (4) for major axis (4), the centre of stop-nut (54) offer vertically on the multiple thread that major axis (4) can be set in and along major axis by spinning movement can before and after the center moving hole (540) of advance and retreat, the forward end of major axis (4) is provided with channel nut (59)Handwheel (57) is set on the position being positioned on major axis (4) between channel nut (59) and stop-nut (54), channel nut (59) is fixed on major axis (4) by split pin (591), the outside dimension of end disk (511) is greater than the diameter dimension that disk (512) is installed, chain guide device is also provided with between front wallboard (1) and rear wall plate (2), described chain guide device comprises the first guider leading in the Song Duan side for the hoisting chain to Lever Blocks (31) between the front wallboard (1) and the rear wall plate (2) that are arranged on Lever Blocks, for load end side the second guider leading and the 3rd guider that coordinates the Song Duan side of the hoisting chain (31) of the first guider to Lever Blocks to lead of the hoisting chain (31) to Lever Blocks, described the first guider is arranged on the side of the pine end that is positioned at hoisting chain (31) of chain hoist wheel that is that be provided with and that be wound with described hoisting chain (31) (3) between the front wallboard (1) of Lever Blocks and rear wall plate (2), the second guider is arranged on the side of the load end that is positioned at hoisting chain (31) of chain hoist wheel (3), 3rd guider is arranged on the position that is positioned at chain hoist wheel (3) below between front wallboard (1) and rear wall plate (2), the first guider comprises rotatable directive wheel (71), the guiding clearance that hoisting chain (31) process can be supplied is formed between described directive wheel (71) and chain hoist wheel (3), the peripheral part of described directive wheel (71) offers for the sidepiece process by chain hoist wheel (3) outside of hoisting chain (31) the annular direction recess (710) that it is led, upper-lower height difference for the region of hoisting chain (31) process in annular direction recess (710) be greater than hoisting chain (31) link length 1/5th to 3/4ths, the second guider comprises guide pad (18), the guiding clearance that hoisting chain (31) process can be supplied is formed between described guide pad (18) and chain hoist wheel (3), described guide pad (18) is provided with for the sidepiece process by chain hoist wheel (3) outside of hoisting chain (31) the direction recess up and down (720) that it is led and is offered along above-below direction by hoisting chain (31) side, up and down in direction recess (720) the upper-lower height difference for the region of hoisting chain (31) process be greater than hoisting chain (31) link length 4/5ths, 3rd guider comprises the deflector apron (73) that the sidepiece that is wound on chain hoist wheel (3) side to hoisting chain (31) leads, the two ends of described deflector apron (73) in semicircle shape and middle part in isosceles trapezoid shape, in the two ends of the semicircle shape of described deflector apron (73) wherein the radius of one end to be greater than the radius of the other end and the radius at this two ends equal with the base of the length of the middle part in isosceles trapezoid shape and short base respectively, the direction of one end to little one end of radius that the radius of described deflector apron (73) is large arranges and points to hoisting chain (31) along oblique upper.

2. a kind of Novel lever block structure according to claim 1, it is characterized in that: suspension hook (32) is positioned at the left side of chain hoist wheel (3), spacing draw ring (33) is positioned at the right side of sprocket wheel, front wallboard (1) is identical with the exterior contour of rear wall plate (2) and include the peripheral minor arc shape edge (101) near hook (12) all with arc-shaped side, be positioned at the first left arc edge (102) of described minor arc shape edge (101) lower left, be positioned at the bottom-right first right arc edge (103) of described minor arc shape edge (101), be positioned at the bottom-right second left arc edge (104) of described first left arc edge (102) and be positioned at the bottom-right second right arc edge (105) of described first right arc edge (103), described second right arc edge (105) is positioned at the upper right side of described second left arc edge (104), to be connected by the peripheral first left straight flange portion (106) with straight flange between minor arc shape edge (101) and the first left arc edge (102) and the peripheral straight flange two of the first left straight flange portion (106) is connected with the arc-shaped side of minor arc shape edge (101) and the first left arc edge (102) periphery respectively, to be connected by the peripheral first right straight flange portion (107) with straight flange between minor arc shape edge (101) and the first right arc edge (103) and the peripheral straight flange two of the first right straight flange portion (107) is connected with the arc-shaped side of minor arc shape edge (101) and the first right arc edge (103) periphery respectively, to be connected by the peripheral second left straight flange portion (108) with straight flange between first left arc edge (102) and the second left arc edge (104) and the arc-shaped side of the peripheral straight flange two of the second left straight flange portion (108) arc edge (102) left with first and the second left arc edge (104) periphery is respectively connected, to be connected by the peripheral second right straight flange portion (109) with straight flange between first right arc edge (103) and the second right arc edge (105) and the arc-shaped side of the peripheral straight flange two of the second right straight flange portion (109) arc edge (103) right with first and the second right arc edge (105) periphery is respectively connected, to be connected by the peripheral straight flange portion, the end (100) with straight flange between second left arc edge (104) and the second right arc edge (105) and the arc-shaped side of peripheral straight flange two, straight flange portion, the end (100) arc edge (104) left with second and the second right arc edge (105) periphery is respectively connected, two described detent pin (581) are separately positioned on the position of the first left straight flange portion (106) and the position of the second right arc edge (105), first guide piece is arranged on the second right straight flange portion (109) position on the lower, second guide piece is arranged on the position of the first left arc edge (102), 3rd guide piece is arranged on the position of the second left arc edge (104).

3. a kind of Novel lever block structure according to claim 2, it is characterized in that: the radian of the arc-shaped side of the first left arc edge (102), the first right arc edge (103) and the second left arc edge (104) is all equal with radius and be all less than radian and the radius of the arc-shaped side of minor arc shape edge (101), the radian of the arc-shaped side of described minor arc shape edge (101) and radius are all less than radian and the radius of the arc-shaped side of the second right arc edge (105).

4. a kind of Novel lever block structure according to claim 3, is characterized in that: the length of straight flange of the length of straight flange in straight flange portion, the end (100), the length of straight flange of the second right straight flange portion (109), the length of straight flange of the first left straight flange portion (106), the length of straight flange of the first right straight flange portion (107) and the second left straight flange portion (108) becomes large successively gradually.

5. a kind of Novel lever block structure according to claim 4, it is characterized in that: be positioned at the first left arc edge (102) between front wallboard (1) and rear wall plate (2), the region of the first right arc edge (103) and the second left arc edge (104) is respectively equipped with latching device along fore-and-aft direction locking, described latching device comprises bolt (131) and nut (132).

6. a kind of Novel lever block structure according to Claims 2 or 3 or 4 or 5, it is characterized in that: the periphery that chain hoist wheel (3) rearward exceeds rear wall plate (2) is provided with spline gear (14), the region that described rear wall plate (2) is positioned at rear is provided with two minor axises with keyway coordinated with described spline gear (14) (15), and what described minor axis (15) and major axis (4) were positioned at chain hoist wheel (3) rearward exceeds spline gear (14) one end all with driven gear (16) and mutual meshing connection.

7. a kind of Novel lever block structure according to claim 6, is characterized in that: the rear side of rear wall plate (2) is connected with the rear outer cover (17) extended to the second right arc edge (105) by minor arc shape edge (101).

8. a kind of Novel lever block structure according to Claims 2 or 3 or 4 or 5, is characterized in that: be provided with the orienting lug (18) led for hoisting chain (31) between front wallboard (1) and the first left arc edge (102) of rear wall plate (2).

9. a kind of Novel lever block structure according to claim 8, is characterized in that: orienting lug (18) is arranged on the bolt (131) of the latching device that the region that is positioned at the first left arc edge (102) between front wallboard (1) and rear wall plate (2) is provided with.

10. a kind of Novel lever block structure according to claim 9, is characterized in that: bolt (131) is arranged with the reinforcement protecting jacket (133) be directly socketed for orienting lug (18).