CN208578311U - A kind of constriction and do not influence the catching device that scaffold above mentions - Google Patents

Abstract

The catching device that scaffold above mentions is not influenced the utility model discloses a kind of constriction and, the constriction includes flipping block, scotch and triggering block, and the scotch and triggering block are both secured on flipping block；It further include third shaft, the triggering block is connected by third shaft with flipping block, and triggering block can be rotated by shaft of third shaft；Further include block, when the block is for limiting triggering block around the rotation of third shaft, rotate the position of stop, the rotation stop are as follows: block is that triggering block or third shaft apply constraint and triggering block avoided further to rotate, the point that triggering block is stopped.The catching device includes the constriction.This constriction and catching device structure are simple, and falling for realizing scaffold, maximum speed is controllable, and the structure design of constriction may make scaffold not trigger catching device locking scaffold during above mentioning in catching device, to achieve the purpose that improving scaffold above proposes efficiency.

Description

A kind of constriction and do not influence the catching device that scaffold above mentions

Technical field

The utility model relates to construction equipment technology fields, do not influence more particularly to a kind of constriction and foot hand The catching device mentioned on frame.

Background technique

Lifting scaffold equipment is the new type scaffold that beginning of this century fast development is got up, and is had to China's construction technology progress It has a major impact.

Elevating scaffold, which refers to, to be set up certain altitude and is attached in engineering structure, by itself lifting device and dress It sets, successively can climb or decline with engineering structure, the external scaffolding with overturn-preventing, falling proof device, wherein falling proof device Or catching device is the important safety attachment on raise scaffold, it, can be to scaffold when improper whereabouts occurs for scaffold It is constrained, achievees the purpose that avoid that accident occurs.

In the prior art, such as application No. is 201020668449.2 utility model patent disclose it is a kind of specific for The anti-falling device for adhesive elevating scaffold applied of construction also has on the basis of performance prevents scaffold from falling extremely Have the characteristics that structure is simple, sensitive reliable, fall arrest is apart from short.

Further structure optimization is made to the catching device for being currently used for scaffold fall arrest, further to develop building for China Construction level is built, is those skilled in the art's technical problem urgently to be resolved.

Utility model content

Further structure optimization is made to the catching device for being currently used for scaffold fall arrest for set forth above, with into one The problem of construction that step develops China is horizontal, is those skilled in the art's technical problem urgently to be resolved, this is practical new Type provides a kind of constriction and does not influence the catching device that scaffold above mentions, this constriction and catching device structure are simple, for real Existing scaffold falls, and maximum speed is controllable, and the structure design of constriction may make scaffold not trigger during above mentioning in catching device Catching device locking scaffold, to achieve the purpose that improving scaffold above proposes efficiency.

It a kind of constriction provided by the utility model and does not influence the catching device that scaffold above mentions and passes through following technical essential To solve the problems, such as: a kind of constriction, including flipping block, scotch and triggering block, the scotch are both secured to turn over triggering block On switch block；

It further include third shaft, the triggering block is connected by third shaft with flipping block, and triggering block can be turned with third Axis is shaft rotation；

Further include block, when the block is for limiting triggering block around the rotation of third shaft, rotates the position of stop, it is described Rotate stop are as follows: block is that triggering block or third shaft apply constraint and triggering block avoided further to rotate, what triggering block was stopped Point.

Be provided with runner specifically, this programme is fitted thereon when in use, be provided with trunnion on runner, trunnion be used for The cross bar phase separation of scaffold, during cross bar is with scaffold guide rail ascending, descending, runner is under the action of cross bar to not Tongfang To on the catching device of rotation: since catching device and guide rail have relative motion on the length direction along guide rail, in the above phase To in motion process, when the trunnion on guide rail cross tube and runner interacts, cross bar driving runner is with first rotating shaft Shaft rotation, i.e. elevating scaffold lifting speed is faster, and runner rotates faster around first rotating shaft.This programme when specifically used Assembly method on catching device are as follows: flipping block is connected by the second shaft with the rack of catching device, and flipping block can be around second turn Axis rotation, scotch is located at the not ipsilateral of the second shaft with triggering block, and flipping block, scotch, triggering block, runner satisfaction are as follows Relationship:

Between constriction and runner under contactless state, flipping block is caused by both scotch and the triggering block gravity Under torque, using the second shaft as shaft, to following replying state: triggering block is located in the motion profile of trunnion, scotch Other than the motion profile of trunnion；

It falls and is driven in runner rotation process in scaffold, when triggering block is constrained by any trunnion, triggering block is right Answer under the active force of trunnion with block phase separation, and by block transmission force to drive flipping block to rotate around the second shaft, stop Block turns in the motion profile of trunnion with flipping block, at this point, due to passing through block transmission force between triggering block and flipping block, So when triggering block under the action of trunnion, force flipping block to rotate, so that scotch is fallen into the rotary motion trace of trunnion；

Rise in driving runner rotation process in scaffold, when triggering block is constrained by any trunnion, triggering block is right It answers and is rotated under the active force of trunnion around third shaft, so that corresponding trunnion is mutually staggered with triggering block, at this point, due to triggering block Realize being staggered for triggering block and trunnion relative position by rotating around third shaft, so when triggering block not by block to turning over Transmitting forces flipping block to rotate on switch block, so that the power of scotch and trunnion phase separation.

Working principle of this programme when using are as follows: flipping block is using the second shaft as rotation center on constriction, scotch It is equivalent to triggering block to be in not ipsilateral clump weight on described rotation center a pair of opposite side, constraints above portion and runner are de- From the state under state being the torque that runner and constriction are contactless, and flipping block is only generated in two sides clump weight gravity Under.In this way, when runner is in the servo-actuated rotation process of scaffold decline process, when any trunnion streaks triggering block position, Corresponding trunnion applies thrust to triggering block, and triggering block promotes flipping block with the second shaft for rotation by block to flipping block transmitting Center, the power of scotch side to overturn to where entering runner rotary motion trace；It is removed in the constraint relationship of corresponding trunnion and triggering block Afterwards, flipping block rotates under the action of the clump weight of two sides around the second shaft to restore state.And since the track that trunnion streaks is solid It is fixed, in this way, each triggering block and the position of the fulcrum that scotch can move to are more solid when each trunnion is successively acted on triggering block Fixed, the turnaround time of flipping block is relatively fixed, in this way, whether scotch when next trunnion turns at scotch position Via deviating from the motion profile of trunnion, determine that can scotch realize the locking to runner, and next trunnion turns to Whether scotch is determined by deviating from the motion profile of trunnion by the velocity of rotation of runner when scotch position, and the above runner turns Dynamic speed determines by the decrease speed of guide rail, in this way, when the revolving speed of runner is beyond certain revolving speed, due to scotch have little time by The interior abjection of the motion profile of trunnion is had an effect with trunnion, in this way, by the radial direction setting in runner for being and branch The scotch that ear is in contact condition provides the support portion of support, or directly by flipping block, the transmitting of the second shaft for locking The locking to runner rotation can be realized, after the above runner is locked, by the trunnion on runner, it can be achieved that right in the power of runner The locking of guide rail cross tube, to reach anti-fall purpose.As those skilled in the art, as scotch is used to contact with trunnion Side is leading portion, and support portion is arranged in the rear end of scotch, but needs to consider that directly with trunnion phase cannot occur for support portion Interaction when specific setting, may be configured as support zone in having the sky for crossing support portion on the side of trunnion or trunnion Gap, the setting direction or form of scotch meet scotch when contacting with trunnion, and scotch is as between trunnion and support portion Force transmission member.Preferably, the support portion can directly adopt rack.As those skilled in the art, touched in above procedure The locking that the transitive dependency of power rotates triggering block around third shaft in block between hair block and flipping block, while as this field Technical staff, since triggering block needs to rotate by shaft of third shaft at work, and in the prior art, realize triggering block with Flipping block by the specific implementation that third shaft is rotatably connected can be used triggering block rotation when third shaft itself not around Own axis: it if one end of third shaft and flipping block are welded to connect, is provided in triggering block between third shaft The hole of gap cooperation；Also may be configured as: third shaft itself is around own axis when triggering block is rotated using third shaft as axis: If one end of third shaft is fixedly connected or triggering block is an integral structure with third shaft with triggering block, it is provided on flipping block For the hole with third shaft clearance fit.So, block specific implementation to triggering block rotational restraint when, if third shaft with Triggering block rotates simultaneously, then may be configured as block and be fixed in rack, and when third shaft goes to setting position, block is directly about Beam triggering block or third shaft, as those skilled in the art, when using the implementation of constraint third shaft, can by Blocking portion, the above blocking portion is arranged in the side of third shaft in the blocking portion of end face setting with the block phase separation of third shaft It can be for relative to the end face or side convex block outstanding, i.e. block realizes the timing of triggering block rotation lock, and convex block is contacted with block Convex block is avoided further to rotate；Third shaft in triggering block rotation process itself not around the block constraint the of own axis The way of realization of three shafts directly hinders triggering block to rotate further around third shaft by block.

As those skilled in the art, for above scheme when realizing, actually triggering block cannot be around under the action of block Third shaft does 360 ° of rotations, and this programme needs to meet after completing the assembly with catching device: runner declines in scaffold When rotating in the process, trunnion can trigger triggering block and directly or indirectly be constrained by block；Runner is in scaffold uphill process transfer When dynamic, during the entire process of trunnion and triggering block phase separation, triggering block is not constrained by block directly or indirectly.

To sum up, the catching device structure including constraints above portion is simple, and scaffold maximum speed of falling is controllable；Meanwhile it comparing In the prior art, as application No. is: scheme provided by the utility application of CN201020668449.2 directly utilizes The trunnion with cross bar phase separation itself is used on to existing runner as the component with constriction phase separation, in this way, can simplify anti- The structure design for falling device itself, simultaneously as not needing to design the structures such as anti-fall card wheel, therefore aloows runner integrally formed Or realize that the transfer route upper connector of the power of runner locking or joint face are less, in this way conducive to the reliable of catching device mechanical property Property；Meanwhile compared to the prior art, the installation of constriction on the rack uses the outside for being installed on runner radial direction, In this way, being designed for the structure to catching device entirety, the rotaring wheel structure that not only runner can be servo-actuated using existing satisfaction with scaffold Design, while rack is conveniently passed through to the both ends of first rotating shaft on catching device and is constrained, to promote first rotating shaft Bending resistance, so that catching device performance is more reliable.

Simultaneously in the present solution, the triggering block set above is connected by third shaft with flipping block, while passing through design gear Block, so that this programme, under the premise of meeting scaffold decline lock function, constriction does not influence to turn during mentioning on scaffold The maximum speed of rotation is taken turns, therefore the catching device of this programme is used not will cause on scaffold when scaffold arbitrary speed is promoted The efficiency by catching device locking, when conducive to raising hoisting scaffold is proposed, simultaneously because scaffold, when above being mentioned, each trunnion is successively When acting on triggering block, only triggering block is rotated around third shaft on constriction, therefore is occurred under trunnion effect compared to flipping block The case where overturning, this programme may make that bring the resistance that scaffold above mentions by catching device smaller.

Meanwhile this programme also disclose it is a kind of do not influence the catching device that scaffold above proposes, including rack, pass through first rotating shaft The runner being installed in rack, the runner can be rotated around the axis of first rotating shaft, and multiple trunnions are provided in the outer rim of runner, The trunnion is annularly evenly distributed with distribution relation between each other, further includes constriction as provided above, further includes the second shaft, described Flipping block is connected by the second shaft with rack, and flipping block can be rotated around the axis of the second shaft, and the second shaft is on flipping block Cooperation position between scotch and triggering block；

Under constriction and runner disengaged position, flipping block torque caused by both scotch and triggering block gravity is made Under, using the second shaft as shaft, to following replying state: triggering block is located in the motion profile of trunnion, and scotch is located at branch Other than the motion profile of ear；

It falls and is driven in runner rotation process in scaffold, when triggering block is constrained by any trunnion, triggering block is right Answer under the active force of trunnion with block phase separation, and by block transmission force to drive flipping block to rotate around the second shaft, stop Block turns in the motion profile of trunnion with flipping block；

Rise in driving runner rotation process in scaffold, when triggering block is constrained by any trunnion, triggering block is right It answers and is rotated under the active force of trunnion around third shaft, so that corresponding trunnion is mutually staggered with triggering block.The above catching device scheme It is the technical solution for including above-described constriction, the program not only anti-fall reliable performance, while catching device structure design knot Structure is simple, mentioned on scaffold during the resistance that is introduced by catching device it is small.

Preferably, the axis direction for being set as first rotating shaft, the second shaft and third shaft is parallel to each other, in this way, stop For block by the radial direction of shaft into and out of the motion profile of trunnion, trunnion can trigger triggering block easily very to drive flipping block Rotation.As those skilled in the art, also may be configured as scotch by shaft axis direction into and out of trunnion motion profile, But it is increasingly complex using the corresponding structure design of this form.

Further technical solution as above-described catching device:

As the specific installation and setting form of constriction, setting are as follows: second shaft is located at trunnion rotary motion trace Top, flipping block is in a strip shape, and scotch is located at the different ends of flipping block from triggering block.Using this programme, overturning is utilized as far as possible The length of block come serve as gravity generate torque the arm of force.

For convenience of constriction is changed in a free state, i.e., without under runner restrained condition, scotch is by trunnion motion profile The time of interior abjection, to control the triggering speed that this catching device realizes the rotation of runner locking runner, setting are as follows: scotch and triggering In block the two, the connection relationship of at least one and flipping block is to be detachably connected relationship.It can be removable with flipping block in this way, adjusting The quality for unloading the clump weight of connection, can be realized above-mentioned purpose.

For convenience of constriction is changed in a free state, i.e., without under runner restrained condition, scotch is by trunnion motion profile The time of interior abjection, to control the triggering speed that this catching device realizes the rotation of runner locking runner, setting are as follows: second shaft Link position on flipping block is adjustable on the length direction of flipping block, and the length direction is scotch and triggering block Line direction.Using this programme, i.e., by adjusting the means of torque arm length, realize above-mentioned purpose.

As the specific implementation for adjusting torque arm length, multiple hinge holes are provided on the flipping block, it is multiple hinged Hole is arranged along the length direction, and the second shaft is fixedly connected with rack, and flipping block passes through any hinge hole and the second shaft It is connected.

To avoid because flipping block position change on the second shaft axis influences trunnion triggering and touches block or influence stop Block causes the anti-fall performance of this programme unreliable with trunnion interaction, is arranged are as follows: and it further include limiting device, the limiting device For limiting position of the flipping block on the second shaft axis.

As the specific implementation of limiting device, external screw thread is provided in second shaft, the limiting device is Two nuts being threadedly connected in the second shaft.This limit device structure is simple, easy to manufacture.

As the specific implementation of runner, the runner includes shell portion and header portion, and the shell portion is in Tubular, the header portion quantity is two pieces, and shell portion is respectively held and is respectively and fixedly provided with one piece of header portion, and header portion is in flat Plate；

N number of ear block is provided in each header portion, and the trunnion in each header portion is annularly uniformly distributed between each other；

Trunnion on two end plates part and is formed along the axis direction face one by one of runner in two ear blocks of face relationship One trunnion.Using this programme, it may make that each trunnion overlay area not only can be wider, meanwhile, runner material is few, light-weight.

It is easily achieved as a kind of connection, while can avoid such as introducing welding heat affected material mechanical performance, making each group At the detachable technical solution to maintain easily and replace, reduce maintenance or use cost in part, each header portion and barrel Divide and is bolted.

The utility model has the following beneficial effects:

Catching device structure including constraints above portion is simple, and scaffold maximum speed of falling is controllable；Meanwhile compared to existing Technology, as application No. is: scheme provided by the utility application of CN201020668449.2 directly uses existing The trunnion with cross bar phase separation itself is used on runner as the component with constriction phase separation, in this way, catching device sheet can be simplified The structure of body designs, simultaneously as not needing to design the structures such as anti-fall card wheel, therefore aloows runner integrally formed or realizes The transfer route upper connector or joint face of the power of runner locking are less, are conducive to the reliability of catching device mechanical property in this way；Together When, compared to the prior art, the installation of constriction on the rack uses the outside for being installed on runner radial direction, in this way, For the structure design to catching device entirety, the rotaring wheel structure design that not only runner can be servo-actuated using existing satisfaction with scaffold is Can, while rack is conveniently passed through to the both ends of first rotating shaft on catching device and is constrained, to promote the bending resistance energy of first rotating shaft Power, so that catching device performance is more reliable.

Simultaneously in the present solution, the triggering block set above is connected by third shaft with flipping block, while passing through design gear Block, so that this programme, under the premise of meeting scaffold decline lock function, constriction does not influence to turn during mentioning on scaffold The maximum speed of rotation is taken turns, therefore the catching device of this programme is used not will cause on scaffold when scaffold arbitrary speed is promoted The efficiency by catching device locking, when conducive to raising hoisting scaffold is proposed, simultaneously because scaffold, when above being mentioned, each trunnion is successively When acting on triggering block, only triggering block is rotated around third shaft on constriction, therefore is occurred under trunnion effect compared to flipping block The case where overturning, this programme may make that bring the resistance that scaffold above mentions by catching device smaller.

Detailed description of the invention

Fig. 1 is making for one specific embodiment of catching device that one kind described in the utility model does not influence that scaffold above mentions With the schematic perspective view under state, the schematic diagram broken section；

Fig. 2 is the partial enlarged view of A portion shown in Fig. 1.

Number in figure is successively are as follows: 1, rack, 2, flipping block, and 3, scotch, 4, triggering block, 5, runner, 51, trunnion, 6, Guide rail, 7, first rotating shaft, the 8, second shaft, 9, cross bar, 10, block, 11, third shaft.

Specific embodiment

Below with reference to embodiment, the utility model is described in further detail, but the structure of the utility model is not only It is limited to following embodiment.

Embodiment 1:

As depicted in figs. 1 and 2, a kind of constriction, including flipping block 2, scotch 3 and triggering block 4, the scotch 3 with Triggering block 4 is both secured on flipping block 2；

It further include third shaft 11, the triggering block 4 is connected by third shaft 11 with flipping block 2, and triggering block 4 can be with Third shaft 11 is shaft rotation；

Further include block 10, when the block 10 is rotated for limiting triggering block 4 around third shaft 11, rotates the position of stop It sets, the rotation stop are as follows: block 10 is that triggering block 4 or third shaft 11 apply constraint and triggering block 4 avoided further to rotate, touching The point that hair block 4 is stopped.

It is provided with runner 5 specifically, this programme is fitted thereon when in use, is provided with trunnion 51, trunnion 51 on runner 5 For 9 phase separation of cross bar with scaffold, during cross bar 9 is with scaffold 6 ascending, descending of guide rail, work of the runner 5 in cross bar 9 With on the lower catching device rotated to different directions: since catching device and guide rail 6 have relatively on the length direction along guide rail 6 Movement, in the above relative movement, when 6 cross tube 9 of guide rail interacts with the trunnion 51 on runner 5, cross bar 9 is driven Turn wheel 5 is shaft rotation with first rotating shaft 7, i.e. elevating scaffold lifting speed is faster, and runner 5 is got over around the rotation of first rotating shaft 7 Fastly.Assembly method of this programme when specifically used on catching device are as follows: the machine that flipping block 2 passes through the second shaft 8 and catching device Frame 1 is connected, and flipping block 2 can be rotated around the second shaft 8, and scotch 3 is located at the not ipsilateral of the second shaft 8 with triggering block 4, and turns over Switch block 2, scotch 3, triggering block 4, runner 5 meet following relationship:

Between constriction and runner 5 under contactless state, flipping block 2 is produced in both scotch 3 and triggering block 4 gravity It is shaft with the second shaft 8 under raw torque, is located at the motion profile of trunnion 51 to following replying state: triggering block 4 Interior, scotch 3 is located at other than the motion profile of trunnion 51；

It falls and is driven in 5 rotation process of runner in scaffold, when triggering block 4 is constrained by any trunnion 51, triggering block 4 Under the active force of corresponding trunnion 51 with 10 phase separation of block, and by 10 transmission force of block to drive flipping block 2 around second turn Axis 8 rotates, and scotch 3 is turned to flipping block 2 in the motion profile of trunnion 51, at this point, due to triggering block 4 and flipping block 2 Between by 10 transmission force of block, so when triggering block 4 under the action of trunnion 51, force flipping block 2 to rotate, so that stop Block 3 is fallen into the rotary motion trace of trunnion 51；

Rise in driving 5 rotation process of runner in scaffold, when triggering block 4 is constrained by any trunnion 51, triggering block 4 It is rotated under the active force of corresponding trunnion 51 around third shaft 11, so that corresponding trunnion 51 is mutually staggered with triggering block 4, this When, since triggering block 4 realizes being staggered for triggering block 4 and 51 relative position of trunnion by rotating around third shaft 11, so when touch Hair block 4, which is transmitted not by block 10 on flipping block 2, forces flipping block 2 to rotate, so that scotch 3 and 51 phase separation of trunnion Power.

Working principle of this programme when using are as follows: flipping block 2 is rotation center, stop with the second shaft 8 on constriction Block 3 and triggering block 4 are equivalent to be in not ipsilateral clump weight on described rotation center a pair of opposite side, constraints above portion with turn Taking turns under 5 disengaged positions is that runner 5 and constriction are contactless, and flipping block 2 is only in the torque of two sides clump weight gravity generation In the state of.In this way, any trunnion 51 streaks 4 institute of triggering block when runner 5 is in the servo-actuated rotation process of scaffold decline process At position, corresponding trunnion 51 applies thrust to triggering block 4, and triggering block 4 promotes flipping block to the transmitting of flipping block 2 by block 10 2 with the second shaft 8 be center of rotation, the power of the side to overturn to where entering 5 rotary motion trace of runner of scotch 3；In corresponding trunnion 51 After removing with the constraint relationship of triggering block 4, flipping block 2 rotates under the action of the clump weight of two sides around the second shaft 8 to restore shape State.And since the track that trunnion 51 streaks is fixed, in this way, when each trunnion 51 is successively acted on triggering block 4, each triggering block 4 with The position of the fulcrum that scotch 3 can move to is relatively fixed, and the turnaround time of flipping block 2 is relatively fixed, in this way, at next When ear 51 is turned at 3 position of scotch, whether scotch 3 deviate from the motion profile via trunnion 51, determines scotch 3 It can realize the locking to runner 5, and whether scotch 3 is by trunnion 51 when next trunnion 51 turns to 3 position of scotch Abjection is determined that the velocity of rotation of the above runner 5 is determined by the decrease speed of guide rail 6 by the velocity of rotation of runner 5 in motion profile, In this way, when the revolving speed of runner 5 exceeds certain revolving speed, since scotch 3 has little time to deviate from i.e. in the motion profile by trunnion 51 It has an effect with trunnion 51, in this way, by the radial direction setting in runner 5 for being to be in stopping for contact condition with trunnion 51 Motion block 3 provides the support portion of support, or directly transmits the power for locking runner 5, Ji Keshi by flipping block 2, the second shaft 8 The locking that now runner 5 is rotated, after the above runner 5 is locked, by the trunnion 51 on runner 5, it can be achieved that 6 cross tube of guide rail 9 locking, to reach anti-fall purpose.As those skilled in the art, the side as scotch 3 is used to contact with trunnion 51 is Support portion is arranged in the rear end of scotch 3 in leading portion, but needs to consider that directly with trunnion 51 phase interaction cannot occur for support portion When with, specific setting, support zone may be configured as in having the sky for crossing support portion on the side of trunnion 51 or trunnion 51 Gap, the setting direction or form of scotch 3 meet scotch 3 when contacting with trunnion 51, and scotch 3 is as trunnion 51 and support Force transmission member between portion.Preferably, the support portion can directly adopt rack 1.As those skilled in the art, the above mistake The locking that the transitive dependency of power rotates triggering block 4 around third shaft 11 in block 10 between triggering block 4 and flipping block 2 in journey, It is used as those skilled in the art simultaneously, since triggering block 4 is needed at work with third shaft 11 for shaft rotation, and existing skill In art, realize that triggering block 4 can be used by the specific implementation that third shaft 11 is rotatably connected in triggering block 4 and flipping block 2 Third shaft 11 itself is not around own axis when rotation: if one end of third shaft 11 and flipping block 2 are welded to connect, triggering It is provided on block 4 for the hole with 11 clearance fit of third shaft；Also may be configured as: triggering block 4 is with third shaft 11 for axis Third shaft 11 itself is around own axis when rotation: as one end of third shaft 11 is fixedly connected or triggers with triggering block 4 Block 4 is an integral structure with third shaft 11, is provided on flipping block 2 for the hole with 11 clearance fit of third shaft.So, Block 10, if third shaft 11 rotates simultaneously with triggering block 4, may be configured as when specific implementation is to 4 rotational restraint of triggering block Block 10 is fixed in rack 1,10 immediate constraint triggering block 4 of block or third shaft when third shaft 11 goes to setting position 11, it can be by the end of third shaft 11 when using the implementation of constraint third shaft 11 as those skilled in the art Blocking portion is arranged with the blocking portion of 10 phase separation of block or in the side of third shaft 11 in face setting, and the above blocking portion can be opposite In the end face or side convex block outstanding, i.e. block 10 realizes the timing of 4 rotation lock of triggering block, and convex block is contacted with block 10 and avoided Convex block further rotates；Third shaft 11 itself does not constrain in 4 rotation process of triggering block around the block of own axis 10 The way of realization of third shaft 11 directly hinders triggering block 4 to rotate further around third shaft 11 by block 10.

As those skilled in the art, for above scheme when realizing, actually triggering block 4 cannot under the action of block 10 360 ° of rotations are done around third shaft 11, and this programme is after completing the assembly with catching device, need to meet: runner 5 is in foot hand When rotating during frame decline, trunnion 51 can trigger triggering block 4 and directly or indirectly be constrained by block 10；Runner 5 is in scaffold When being rotated in uphill process, in trunnion 51 and during the entire process of 4 phase separation of triggering block, triggering block 4 not directly or indirectly by It is constrained to block 10.

To sum up, the catching device structure including constraints above portion is simple, and scaffold maximum speed of falling is controllable；Meanwhile it comparing In the prior art, as application No. is: scheme provided by the utility application of CN201020668449.2 directly utilizes The trunnion 51 with 9 phase separation of cross bar itself is used on to existing runner 5 as the component with constriction phase separation, in this way, can letter The structure design for changing catching device itself, simultaneously as not needing to design the structures such as anti-fall card wheel, therefore aloows runner 5 whole The transfer route upper connector or joint face of power that is body formed or realizing the locking of runner 5 are less, are conducive to catching device mechanical property in this way The reliability of energy；Meanwhile compared to the prior art, installation of the constriction in rack 1, which uses, is installed on 5 radial direction of runner Outside, in this way, designing for the structure to catching device entirety, not only runner 5 can be servo-actuated using existing satisfaction and scaffold The design of 5 structure of runner, while rack 1 is conveniently passed through to the both ends of first rotating shaft 7 on catching device and is constrained, to mention The bending resistance for rising first rotating shaft 7, so that catching device performance is more reliable.

Simultaneously in the present solution, the triggering block 4 set above is connected by third shaft 11 with flipping block 2, while by setting Block 10 is counted, constriction is not so that this programme is under the premise of meeting scaffold decline lock function, during mentioning on scaffold The maximum speed that runner 5 rotates is influenced, therefore the catching device of this programme is used not will cause when scaffold arbitrary speed is promoted It mentions on scaffold by catching device locking, conducive to efficiency when improving hoisting scaffold, simultaneously because scaffold is when above being mentioned, respectively When trunnion 51 is successively acted on triggering block 4, only triggering block 4 is rotated around third shaft 11 on constriction, therefore is existed compared to flipping block 2 The case where being flipped under trunnion 51 acts on, this programme may make that bring the resistance that scaffold above mentions by catching device smaller.

Embodiment 2:

As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1: present embodiment discloses one Kind the catching device that scaffold above proposes, including rack 1 are not influenced, the runner 5 in rack 1 is installed on by first rotating shaft 7, described turn Wheel 5 can be rotated around the axis of first rotating shaft 7, multiple trunnions 51 are provided in the outer rim of runner 5, the trunnion 51 is between each other The uniformly distributed distribution relation of ring-type, further includes the constriction as provided by embodiment 1, further includes the second shaft 8, and the flipping block 2 is logical It crosses the second shaft 8 to be connected with rack 1, flipping block 2 can be rotated around the axis of the second shaft 8, and the second shaft 8 is on flipping block 2 Cooperation position is between scotch 3 and triggering block 4；

Under constriction and 5 disengaged position of runner, flipping block 2 turns in scotch 3 with caused by 4 the two gravity of triggering block It is shaft with the second shaft 8, to following replying state: triggering block 4 is located in the motion profile of trunnion 51, stop under square effect Block 3 is located at other than the motion profile of trunnion 51；

It falls and is driven in 5 rotation process of runner in scaffold, when triggering block 4 is constrained by any trunnion 51, triggering block 4 Under the active force of corresponding trunnion 51 with 10 phase separation of block, and by 10 transmission force of block to drive flipping block 2 around second turn Axis 8 rotates, and scotch 3 is turned to flipping block 2 in the motion profile of trunnion 51；

Rise in driving 5 rotation process of runner in scaffold, when triggering block 4 is constrained by any trunnion 51, triggering block 4 It is rotated under the active force of corresponding trunnion 51 around third shaft 11, so that corresponding trunnion 51 is mutually staggered with triggering block 4.More than Catching device scheme is the technical solution for including above-described constriction, the program not only anti-fall reliable performance, while catching device Structure design structure is simple, mentioned on scaffold during the resistance that is introduced by catching device it is small.

Preferably, the axis direction for being set as first rotating shaft 7, the second shaft 8 and third shaft 11 is parallel to each other, in this way, Scotch 3 by shaft radial direction into and out of trunnion 51 motion profile, trunnion 51 can easily trigger very much triggering block 4 with Flipping block 2 is driven to rotate.As those skilled in the art, scotch 3 also may be configured as by the axis direction of shaft into and out of trunnion 51 motion profile, but it is increasingly complex using the corresponding structure design of this form.

Embodiment 3:

As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 2: as the specific of constriction Installation and setting form, setting are as follows: second shaft 8 is located at the top of 51 rotary motion trace of trunnion, and flipping block 2 is in a strip shape, only Motion block 3 is located at the different ends of flipping block 2 from triggering block 4.Using this programme, weight is served as using the length of flipping block 2 as far as possible The arm of force of power generation torque.

For convenience of constriction is changed in a free state, i.e., without under 5 restrained condition of runner, scotch 3 is moved by trunnion 51 The time deviate from track, to control the triggering speed that this catching device realizes the rotation of 5 locking runner 5 of runner, setting are as follows: scotch 3 with 4 the two of triggering block, and the connection relationship of at least one and flipping block 2 is to be detachably connected relationship.It can be in this way, adjusting The quality for the clump weight that flipping block 2 is detachably connected, can be realized above-mentioned purpose.

For convenience of constriction is changed in a free state, i.e., without under 5 restrained condition of runner, scotch 3 is moved by trunnion 51 The time deviate from track, to control the triggering speed that this catching device realizes the rotation of 5 locking runner 5 of runner, setting are as follows: described the Two shafts 8 are adjustable on the length direction of flipping block 2 in the link position on flipping block 2, and the length direction is scotch 3 With the line direction of triggering block 4.Using this programme, i.e., by adjusting the means of torque arm length, realize above-mentioned purpose.

As the specific implementation for adjusting torque arm length, multiple hinge holes are provided on the flipping block 2, it is multiple hinged Hole is arranged along the length direction, and the second shaft 8 is fixedly connected with rack 1, and flipping block 2 passes through any hinge hole and second turn Axis 8 is connected.

To avoid because the position change on 8 axis of the second shaft of flipping block 2, which influences the triggering of trunnion 51, touches block or influence Scotch 3 causes the anti-fall performance of this programme unreliable with the interaction of trunnion 51, is arranged are as follows: and it further include limiting device, it is described Limiting device is for limiting position of the flipping block 2 on 8 axis of the second shaft.

As the specific implementation of limiting device, external screw thread is provided in second shaft 8, the limiting device is Two nuts being threadedly connected in the second shaft 8.This limit device structure is simple, easy to manufacture.

As the specific implementation of runner 5, the runner 5 includes shell portion and header portion, the shell portion It is cylindrical in shape, the header portion quantity is two pieces, and shell portion is respectively held and is respectively and fixedly provided with one piece of header portion, and header portion is in Tabular；

N number of ear block is provided in each header portion, and the trunnion 51 in each header portion is annular in shape uniformly distributed between each other；

Trunnion 51 on two end plates part and is in two ear blocks of face relationship along the axis direction face one by one of runner 5 Form a trunnion 51.Using this programme, it may make that each 51 overlay area of trunnion not only can be wider, meanwhile, runner 5 is few with material, It is light-weight.

It is easily achieved as a kind of connection, while can avoid such as introducing welding heat affected material mechanical performance, making each group At the detachable technical solution to maintain easily and replace, reduce maintenance or use cost in part, each header portion and barrel Divide and is bolted.

The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical In novel protection scope.

Claims (10)

1. a kind of constriction, which is characterized in that including flipping block (2), scotch (3) and triggering block (4), the scotch (3) It is both secured on flipping block (2) with triggering block (4)；

It further include third shaft (11), the triggering block (4) is connected by third shaft (11) with flipping block (2), and triggering block It (4) can be shaft rotation with third shaft (11)；

Further include block (10), when the block (10) rotates for limiting triggering block (4) around third shaft (11), rotates stop Position, the rotation stop are as follows: block (10) is that triggering block (4) or third shaft (11) apply constraint and avoid triggering block (4) Further rotation, the point that triggering block (4) is stopped.

2. one kind does not influence the catching device that scaffold above proposes, including rack (1), it is installed on rack (1) by first rotating shaft (7) Runner (5), the runner (5) can rotate around the axis of first rotating shaft (7), be provided with multiple trunnions in the outer rim of runner (5) (51), the trunnion (51) is annularly evenly distributed with distribution relation between each other, which is characterized in that further includes as described in claim 1 Constriction, further include the second shaft (8), the flipping block (2) is connected by the second shaft (8) with rack (1), flipping block (2) it can be rotated around the axis of the second shaft (8), cooperation position of the second shaft (8) on flipping block (2) is located at scotch (3) Between triggering block (4)；

Under constriction and runner (5) disengaged position, flipping block (2) is produced by the gravity of both scotch (3) and triggering block (4) Torque under, with the second shaft (8) be shaft, be located at the movement rail of trunnion (51) to following replying state: triggering block (4) In mark, scotch (3) is located at other than the motion profile of trunnion (51)；

It falls and is driven in runner (5) rotation process in scaffold, when triggering block (4) is constrained by any trunnion (51), triggering Block (4) under the active force of corresponding trunnion (51) with block (10) phase separation, and by block (10) transmission force to drive overturning Block (2) is rotated around the second shaft (8), and scotch (3) turns in the motion profile of trunnion (51) with flipping block (2)；

Rise in driving runner (5) rotation process in scaffold, when triggering block (4) is constrained by any trunnion (51), triggering Block (4) rotates under the active force of corresponding trunnion (51) around third shaft (11), so that corresponding trunnion (51) and triggering block (4) It mutually staggers.

3. one kind according to claim 2 does not influence the catching device that scaffold above mentions, which is characterized in that second shaft (8) it is located at the top of trunnion (51) rotary motion trace, flipping block (2) is in a strip shape, and scotch (3) and triggering block (4) are located at flipping block (2) different ends.

4. one kind according to claim 2 does not influence the catching device that scaffold above mentions, which is characterized in that scotch (3) with In triggering block (4) the two, the connection relationship of at least one and flipping block (2) is to be detachably connected relationship.

5. one kind according to claim 3 does not influence the catching device that scaffold above mentions, which is characterized in that second shaft (8) link position on flipping block (2) is adjustable on the length direction of flipping block (2), and the length direction is scotch (3) with the line direction of triggering block (4).

6. one kind according to claim 5 does not influence the catching device that scaffold above mentions, which is characterized in that the flipping block (2) multiple hinge holes are provided on, multiple hinge holes are arranged along the length direction, and the second shaft (8) and rack (1) are fixed Connection, flipping block (2) are connected by any hinge hole with the second shaft (8).

7. one kind according to claim 6 does not influence the catching device that scaffold above mentions, which is characterized in that further include limit dress It sets, the limiting device is for limiting position of the flipping block (2) on the second shaft (8) axis.

8. one kind according to claim 7 does not influence the catching device that scaffold above mentions, which is characterized in that second shaft (8) external screw thread is provided on, the limiting device is two nuts being threadedly connected on the second shaft (8).

9. one kind according to claim 2 does not influence the catching device that scaffold above mentions, which is characterized in that the runner (5) Including shell portion and header portion, the shell portion is cylindrical in shape, and the header portion quantity is two pieces, and shell portion is each End is respectively and fixedly provided with one piece of header portion, and header portion is in tabular；

N number of ear block is provided in each header portion, and the trunnion in each header portion is annularly uniformly distributed between each other；

Trunnion on two end plates part and is formed along the axis direction face one by one of runner (5) in two ear blocks of face relationship One trunnion (51).

10. one kind according to claim 9 does not influence the catching device that scaffold above mentions, which is characterized in that each header portion It is bolted with shell portion.