CN201539542U - Transmission tightening mechanism - Google Patents
Transmission tightening mechanism Download PDFInfo
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- CN201539542U CN201539542U CN2009202367880U CN200920236788U CN201539542U CN 201539542 U CN201539542 U CN 201539542U CN 2009202367880 U CN2009202367880 U CN 2009202367880U CN 200920236788 U CN200920236788 U CN 200920236788U CN 201539542 U CN201539542 U CN 201539542U
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Abstract
The utility model discloses a transmission tightening mechanism comprising a fixed plate, a sliding block, a check block and an adjusting screw, wherein the fixed plate is provided with a straight guide slot, an opening of which is arranged at one side of the fixed plate; the sliding block and the straight guide slot are clamped and connected in a sliding manner; the sliding block is provided with a support shaft extending out of the straight guide slot; the support shaft is provided with a tightening wheel; the check block is fixedly connected at the opening of the straight guide slot; and the check block is provided with a check block adjusting screw hole matched with the adjusting screw which penetrates through the check block adjusting screw hole in a screwing manner and contacted with the sliding block. The adjusting screw is screwed into the check block, thus pushing the sliding block, leading the sliding block to do linear motion along the straight guide slot, and further enlarging the axial distance of the tightening wheel; the adjusting screw is screwed out of the check block, and the tightening wheel moves along the screwing-out direction of the adjusting screw under the acting force of a chain or a belt, thus shortening the axial distance of the tightening wheel, and having convenient operation and strong practicability.
Description
Technical field
The utility model relates to mechanical field, particularly a kind ofly makes belt or chain keep the transmission tightening mechanism of certain tension force by position regulation.
Background technique
In the modern production field, carrying out smoothly of chain-driven, band transmission need be to chain or the certain tension force of belt maintenance.The too small meeting of pretightening force reduces the ability of transmitted load and efficient, and pretightening force is excessive, and the load of axle and bearing increases, and the wearing and tearing of aggravation bearing can make band or chain life-span reduce.No matter pretightening force is excessive or too small, all can have influence on the precision of transmission, efficient, or even the machining accuracy of product and quality.As seen, whether whether tightening mechanism designs reasonable, good, is a key factor of band transmission or chain-driven proper functioning.
Current tightening mechanism is divided into Idle wheel adjustment type and adjusting axle spacing type.Idle wheel type tightening mechanism is divided into manual tune and regulates two big classes automatically, and Idle wheel type tightening mechanism can not rotate by anti-phase, and there is the structure relative complex in the adjustment type tensioner apparatus automatically, and manufacture cost is corresponding too high; And use the Idle wheel of manual tune inefficiency can occur, the uppity problem of tightness.The tightening mechanism of adjusting axle spacing type, wherein the application of automatic type tightening mechanism generally is by driven by motor, has complex structure, the higher problem of cost; And the tightening mechanism of type hand adjusting axle spacing generally uses bolt and nut to regulate or directly carries out manual adjusting by rule of thumb, and the above-mentioned method of tightening can't guarantee the precision of regulating and the size of tension force.
At above problem, be badly in need of a kind of simple in structurely, cheap, regulate transmission tightening mechanism stable, reliable and easy to maintenance.
The model utility content
The purpose of this utility model provides a kind of simple in structure, cheap, regulates transmission tightening mechanism stable, reliable and easy to maintenance.
To achieve these goals, the technical solution of the utility model is: a kind of transmission tightening mechanism is provided, comprise fixed plate, slide block, block and adjusting screw, described fixed plate has directly to guide groove, a described side of directly being located at described fixed plate to the opening of guide groove, described slide block directly engages and is slidingly connected to guide groove with described, described slide block is equipped with and stretches out described straight fulcrum to guide groove, be equipped with on the described fulcrum and tighten wheel, described link stopper is fixedly connected on described straight opening to guide groove, offer the block that is complementary with described adjusting screw on the described block and regulate screw, described adjusting screw is revolved and is passed described block and regulate screw and contact with described slide block.
Preferably, describedly directly comprise rail portion and groove portion to guide groove, described slide block comprises two lateral mass and boss, two described lateral mass are positioned at the both sides of described boss top, two described lateral mass are fixedlyed connected with described boss, described boss is placed in the described groove portion, and two described lateral mass place on the described rail portion.
Preferably, described transmission tightening mechanism also comprises positioning screwn, has the location elongated slot on the two described lateral mass, and elongated slot place, the corresponding described location of described rail portion has through hole, and described positioning screwn passes described location elongated slot and is combined in the described through hole.It is described directly on guide groove that described positioning screwn is positioned described slide block slidably, avoids described slide block both sides to wave or directly come off to guide groove from described.
Preferably, the adjacent end with described block of described slide block is provided with the corresponding slide block of described adjusting screw and regulates screw.After described adjusting screw is screwed into described slide block and regulates the screw bottom, continue the described adjusting screw of precession and just can promote described slide block; After described adjusting screw screwed out described slide block fully and regulate screw, continue, thereby described slide block outwards moved under the active force of chain or belt and reduced the described axial distance that tightens wheel this moment toward the described adjusting screw of outward turning.
Preferably, the screw rod of described adjusting screw comprises external screw rod that cooperates with slide block adjusting screw and the inner screw that cooperates with described block adjusting screw, the diameter of described external screw rod is less than the diameter of described inner screw, and the pitch of described external screw rod is not equal to the pitch of described inner screw.The described slide block screw of described external screw rod precession, the described block screw of described inner screw precession, because the pitch of described external screw rod is not equal to the pitch of described inner screw, and block be fixed on described directly to the opening end of guide groove, so the turn of described adjusting screw makes slide block and block produce relative movement, thereby make described slide block do away from or near the straight line motion of described block, and then regulated the axial distance of described regulating wheel, reach the purpose that tightens or transfer loose drive chain or driving belt.
Preferably, described adjusting screw is a stainless steel screw.Described stainless steel screw comprehensive mechanical property is good, and distortion is difficult for getting rusty.
Preferably, described adjusting screw is a fine thread screw, and described block regulates screw and described slide block adjusting screw is the closely-pitched screw.Described fine thread strength is good, more is applicable to fine setting, and work takes up room little.
Preferably, described transmission tightening mechanism also comprises locking nut, and described locking nut is located between described adjusting screw and the described block.Described locking nut is used for the location to described slide block, prevents because reasons such as vibrations cause the loosening of described adjusting screw.
Preferably, described fixed plate is provided with the stroke cuing scale, and the corresponding described stroke cuing scale of described slide block is provided with the stroke pointer.The cooperation of described stroke cuing scale and stroke pointer utilization makes the precision of regulating the described axial distance that tightens wheel higher.
Preferably, described fixed plate is provided with proximity detector.Described proximity detector is used to detect described slide block, described fulcrum and describedly tightens the position of wheel and report to the police when described slide block and the improper motion of described fulcrum.
Compared with prior art, the utility model is by regulating the adjusting screw on the block, make in the described block of described adjusting screw precession, and then promote described slide block, make described slide block directly do straight line motion to guide rail along this, thereby increase the axial distance that tightens wheel, reach the purpose that tightens drive chain or driving belt; On the contrary, adjusting screw is screwed out from described block, the described wheel that tightens is under the active force of chain or belt, the direction of following described adjusting screw to screw out moves, thereby dwindle the axial distance that tightens wheel, reach the purpose of transferring loose drive chain or driving belt, easy to operate, practical.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is first embodiment's of the utility model transmission tightening mechanism a structural representation.
Fig. 2 is the partial exploded view of transmission tightening mechanism shown in Figure 1.
Structural representation when Fig. 3 assembles for transmission tightening mechanism shown in Figure 2.
Fig. 4 is second embodiment's of the utility model transmission tightening mechanism a partial exploded view.。
Fig. 5 is the 3rd embodiment's of the utility model transmission tightening mechanism a partial exploded view.
Fig. 6 is the 4th embodiment's of the utility model transmission tightening mechanism a partial exploded view.
Fig. 7 is the 5th embodiment's of the utility model transmission tightening mechanism a partial exploded view.
Fig. 8 is the 6th embodiment's of the utility model transmission tightening mechanism a partial exploded view.
Fig. 9 is the 7th embodiment's of the utility model transmission tightening mechanism a partial exploded view.
Embodiment
Fig. 1 is the structure principle chart of first embodiment's equipment 1000 of application the utility model transmission tightening mechanism, and as shown in Figure 1, described equipment 1000 comprises three fast pulleys 300, chain 200 and transmission tightening mechanism 100.In conjunction with Fig. 2, described transmission tightening mechanism 100 comprises fixed plate 10, slide block 20, block 30, adjusting screw 40 and positioning screwn 50, and in the present embodiment, the quantity of described adjusting screw 40 and described positioning screwn 50 is two.Described fixed plate 10 has directly to guide groove 11, a described side from described fixed plate 10 to the opening of guide groove 11 that directly be located at.Described slide block 20 directly engages and is slidingly connected to guide groove 11 with described, described slide block 20 is equipped with and stretches out described straight fulcrum 21 to guide groove 11, be equipped with on the described fulcrum 21 and tighten wheel 22, described link stopper 30 and described directly to the opening end of guide groove 11 corresponding respectively have a fixing threaded hole 61, thereby described block 30 and described slide block 20 achieve a fixed connection by set screw 60 and being connected of described fixing threaded hole.Offer the block that is complementary with described adjusting screw 40 on the described block 30 and regulate screw 31, in the present embodiment, the quantity that described block is regulated screw 31 is 2, and described adjusting screw 40 is revolved and passed described block and regulate screw 31 and contact with described slide block 20.Three described fast pulleys 300 are individually fixed in three corners of described fixed plate 10, and three described fast pulleys 300 and described transmission tightening mechanism 100 couple together by described chain 200.Have at least one to be driving wheel in the three described fast pulleys 300, other fast pulley is a follower, and described driving wheel drives described follower by described chain 200 under the coordination of described transmission tightening mechanism 100, realize chain transmission.
Particularly, describedly directly comprise rail portion 11a and the 11b of groove portion to guide groove 11, described slide block 20 comprises two lateral mass 20a and boss 20b, two described lateral mass 20a are positioned at the both sides of described boss 20b top, two described lateral mass 20a are fixedlyed connected with described boss 20b, in the present embodiment, two described lateral mass 20a and described boss 20b are one-body molded.Described boss 20b is placed in the described groove 11b of portion, and two described lateral mass 20a place on the described rail portion 11a.Described fulcrum 21 stretches out from described boss 20b, passes the described groove 11b of portion.Two lateral mass 20a of described slide block 20 have location elongated slot 23, and elongated slot 23 places, the corresponding described location of described rail portion 11a have through hole 12, and described positioning screwn 50 passes described location elongated slot 23 and is combined in the described through hole 12.It is described directly on guide groove 11 that described positioning screwn 50 is arranged in described slide block 20 slidably, avoids described slide block 20 both sides to wave even directly come off to guide groove 11 from described.
The preferably, described adjusting screw 40 is a fine thread screw, it is the closely-pitched screw that described block is regulated screw 31.The fine thread strength is good, thereby is applicable to that more fine setting guarantees the precision of regulating, and work takes up room little.
Better person, described adjusting screw 40 is the stainless steel fine thread screw.Described stainless steel fine thread screw comprehensive mechanical property is good, and distortion is difficult for getting rusty.
The preferably, described transmission tightening mechanism 100 also comprises locking nut 70, described locking nut 70 is located between described adjusting screw 40 and the described block 30, and described locking nut 70 is used for the location to described slide block 20, prevents because reasons such as vibrations cause the loosening of described adjusting screw 40.Described fixed plate 10 is provided with stroke cuing scale (figure does not show), and described slide block 20 corresponding described stroke cuing scales are provided with stroke pointer (figure does not show).Described stroke cuing scale makes the described axial distance that tightens wheel 22 of adjusting reach higher precision with the utilization that cooperates of described stroke pointer.Described fixed plate 10 is provided with proximity detector (figure does not show).Described proximity detector is used to detect described slide block 20, described fulcrum 21 and describedly tightens the position of wheel 22 and report to the police when described slide block 20 and the 21 improper motions of described fulcrum.
During assembling, earlier the block of the described block 30 of described adjusting screw 40 precessions is regulated screw 31, make the screw rod of described adjusting screw 41 stretch out described block 30, and described slide block 20 is contacted with described block 30, then described slide block 20 is placed described directly on guide groove 11, described positioning screwn 50 is combined in the described through hole 12, thereby realize described slide block 20 slidably is arranged in described directly on guide groove 11, at last described set screw 60 is screwed in the affiliated fixing threaded hole 61, thereby described block 30 is fixed on described directly to the opening of guide groove 11, when assembling is finished as shown in Figure 3.
When needs increase the axial distance that tightens wheel 22, in the described block 30 of described adjusting screw 40 precessions, make the screw rod of described adjusting screw 40 stretch out described block 30 and promote described slide block 20 and do straight line motion, described slide block 20 is shifted onto suitable position, described block screw thread 31 blocks described adjusting screw 40, thereby supports slide block 20, is unlikely to allow chain 200 that described slide block 20 is rebounded, and then make the chain 200 that tightens installation on the wheel 22 obtain tightening, increased the tension force of chain 200.When needs reduce the axial distance that tightens wheel 22, described adjusting screw 40 is screwed out from described block 30, under the tension of chain 200, the direction that described slide block 20 also follows described adjusting screw 40 to screw out moves, thereby make the chain 200 that tightens installation on the wheel 22 obtain transferring pine, reduced the tension force of described chain 200.In the adjustment process, described stroke cuing scale makes the described axial distance that tightens wheel 22 of adjusting reach higher precision with the utilization that cooperates of described stroke pointer.Described fixed plate 10 is provided with proximity detector, and described proximity detector detects described slide block 20, described fulcrum 21 and the described position that tightens wheel 22 on the one hand, reports to the police when described slide block 20 and the 21 improper motions of described fulcrum on the other hand.
Fig. 4 is second embodiment's of the utility model transmission tightening mechanism a partial exploded view, as shown in Figure 4, different with first embodiment is that described slide block 20 also is provided with described adjusting screw 40 corresponding slide blocks with described block 30 adjacent ends and regulates screw 24.In the present embodiment, the quantity that described slide block is regulated screw 24 is 2.
When needs increase the described axial distance that tightens wheel 22, at first adjusting screw 40 is screwed into the bottom that described slide block is regulated screw 24, continue the described adjusting screw 40 of inside precession then, described adjusting screw 40 promotes described slide block 20, thereby make the chain 200 that tightens installation on the wheel 22 obtain tightening, increased the tension force of chain 200; When needs reduce the described axial distance that tightens wheel 22, outwards described adjusting screw 40 is regulated the screw 24 from described slide block earlier and screw out fully, continue outwards to screw out described adjusting screw 40 afterwards, similarly, under the tension of chain 200, the direction that described slide block 20 also follows adjusting screw 40 to screw out moves, thereby it is loose to make the chain 200 that tightens installation on the wheel 22 obtain accent, has reduced the tension force of described chain 22.
Fig. 5 is the 3rd embodiment's of the utility model transmission tightening mechanism a partial exploded view, as shown in Figure 5, different with second embodiment is, the quantity that the block of offering on the described block 30 is regulated screw 31 is 4, the two second blocks adjusting screw 312 that is respectively the two first blocks adjusting screw 311 of described block 30 upsides and is located at the described first adjusting inboard, screw 311 below.Correspondingly, the quantity of described adjusting screw 40 also is 4, be located at first adjusting screw 401 in described first block adjusting screw 311 with being respectively rotatable adjusting, and rotatable adjusting be located at described second block and regulate second adjusting screw 402 in the screw 312, it is corresponding with two slide blocks adjusting screws 24 on the described slide block 20 that two first blocks of described block 30 upsides are regulated screw 311.
When needs increase the described axial distance that tightens wheel 22, on the one hand, two second blocks of two second described block 30 downsides of adjusting screw 402 precessions of described block 30 downsides are regulated in the screws 312, the screw rod of described second adjusting screw 402 is stretched out, thereby and contact with slide block 20 and to promote described slide block 20; On the other hand, two first adjusting screw 401 are passed first block of block 30 upsides and regulate screw 311, after described first adjusting screw 401 is screwed into described slide block and regulates the bottom of screw 24, thereby continue described first adjusting screw of precession 40 promotion slide blocks.Like this, do straight line motion, make the chain 22 that tightens installation on the wheel 22 obtain tightening, increased the tension force of chain 22 thereby selection adjusting first adjusting screw 401 or selection adjusting second adjusting screw 402 promote described slide block 20.
When needs reduce the described axial distance that tightens wheel 22, on the one hand, described first adjusting screw 401 is regulated back-out fully screw 311 described second screws from first block, continue outwards to screw out described first adjusting screw 401 afterwards, meanwhile, second adjusting screw 402, second block from described block 30 of block 30 downsides being regulated screw 311 screws out; At this moment, under the tension of chain 200, the direction that described slide block 20 also follows described second adjusting screw 402 to screw out moves, thereby makes the chain 200 that tightens installation on the wheel 22 obtain transferring pine, has reduced the tension force of described chain 200.
Fig. 6 is the 4th embodiment's of the utility model transmission tightening mechanism a partial exploded view.As shown in Figure 6, different with second embodiment is, the screw rod 412 of described adjusting screw 41 comprises external screw rod 412a that cooperates with slide block adjusting screw 24 and the inner screw 412b that cooperates with described block adjusting screw 31, and the diameter of described external screw rod 412a is less than the diameter of described inner screw 412b.In the present embodiment, the pitch of described external screw rod 412a is greater than the pitch of described inner screw 412b.
During assembling, earlier the block of the described block 30 of described adjusting screw 41 precessions is regulated screw 31, make the screw rod 412 of described adjusting screw 41 stretch out described block 30, make described external screw rod 412a be screwed into the bottom that respective slide is regulated screw 24 again, and described slide block 20 is contacted with described block 30, then described slide block 20 is placed described directly on guide groove 11, described positioning screwn 50 is passed described location elongated slot 23 to be combined in the described through hole 12, thereby described slide block 20 slidably in described directly on guide groove 11, described block 30 is fixed on by described set screw 60 describedly directly gets final product at last to the opening end of guide groove 11.
When needs increase the described axial distance that tightens wheel 22, the described adjusting screw 41 of outward turning, because the pitch of described external screw rod 412a is greater than the pitch of described inner screw 412b, described external screw rod 412a screws out described slide block and regulates the speed of screw 24 screws out described block adjusting screw 31 greater than described inner screw 412b speed, and described block 30 be fixed on described directly to the opening end of guide groove 11, thereby make described slide block 20 do straight line motion away from described block 30, realize promoting described slide block 20, thereby make the chain 200 that tightens installation on the wheel 22 obtain tightening, increased the tension force of chain 200; On the contrary, when needs reduce the described axial distance that tightens wheel 22, the described adjusting screw 41 of precession, make described slide block 20 do the straight line motion of close described block 30, realization retracts described slide block 20, thereby makes the chain 200 that tightens installation on the wheel 22 be transferred pine, reduces the tension force of chain 200.
Fig. 7 is the 5th embodiment's of the utility model transmission tightening mechanism 100 a partial exploded view.As shown in Figure 7, different with embodiment four is, the screw rod 422 of described adjusting screw 42 comprises external screw rod 422a and inner screw 422b, and the pitch of described external screw rod 422a is less than the pitch of described inner screw 422b.
When needs increase the described axial distance that tightens wheel 22, the described adjusting screw 42 of precession, because the pitch of described external screw rod 422a is less than the pitch of described inner screw 422b, the described slide block of described external screw rod 422a precession is regulated the speed of the speed of screw 24 less than the described block adjusting of described inner screw 422b precession screw 31, and block 30 be fixed on described directly to the opening of guide groove 11, thereby described slide block 20 is done the straight line motion away from described block 30, realize promoting described slide block 20, thereby make the chain 200 that tightens installation on the wheel 22 obtain tightening, increased the tension force of described chain 200; On the contrary, when needs reduce the described axial distance that tightens wheel 22, screw out described adjusting screw 42, described slide block 20 is done the straight line motion near described block 30, realization retracts described slide block 20, thereby makes the chain 200 that tightens installation on the wheel 22 be transferred pine, reduces the tension force of chain 200.
Fig. 8 is the 6th embodiment's of the utility model transmission tightening mechanism a partial exploded view, as shown in Figure 8, as different from Example 3, the quantity of described adjusting screw is 4, comprise with first block of described block 30 upsides and regulate first adjusting screw 401 that screw 311 cooperates, and second adjusting screw 402 that cooperates with second block adjusting screw 312 of described block 30 downsides, the screw rod 4012 of described first adjusting screw 401 comprises external screw rod 4012a and inner screw 4012b, and the pitch of described external screw rod 4012a is greater than the pitch of described inner screw 4012b.
During assembling, earlier described first block of described first adjusting screw 401 precessions is regulated screw 311, described second block of described second adjusting screw 402 precessions is regulated the block of screw 402 and regulated screw 312, make the screw rod 4012 of described first adjusting screw 401 stretch out described block 30, and be screwed into the bottom that respective slide is regulated screw 24, described slide block 20 is contacted with described block 30, described slide block 20 is placed described directly on guide groove 11, described positioning screwn 50 is passed described location elongated slot 23 be combined in the described through hole 12, at last described block 30 is fixed on described straight opening to guide groove 11 by described set screw 60 and gets final product.
When needs increase the described axial distance that tightens wheel 22, on the one hand, two second blocks of two second described block 30 downsides of adjusting screw 402 precessions of described block 30 downsides are regulated in the screws 31, the screw rod of described second adjusting screw 402 is stretched out, thereby and contact with slide block 20 and to promote described slide block 20; Meanwhile, screw out first adjusting screw 401 of described block 30 upsides, because the pitch of described external screw rod 4012a is greater than the pitch of described inner screw 4012b, described external screw rod 4012a screws out described slide block and regulates the speed of screw 24 screws out described first block adjusting screw 311 greater than described inner screw 4012b speed, and described block 30 be fixed on described directly to the opening end of guide groove 11, thereby described slide block 20 is done the straight line motion away from described block 30, i.e. the described slide block 20 of realization promotion.Like this, four adjusting screw are delivered to power on the slide block 20 by described block 30 and promote slide block 20 does straight line motion away from described block 30, tightens the chain of installing on the wheel 22 200 and has obtained tightening thereby make, and has increased the tension force of chain 200.
When needs reduce the described axial distance that tightens wheel 22, on the one hand second adjusting screw 402 is screwed out from described block 30, meanwhile, described first adjusting screw 401 of precession, at this moment, described slide block 20 is done the straight line motion near described block 30, thereby makes the chain 200 that tightens installation on the wheel 22 obtain transferring pine, has reduced the tension force of described chain 200.Because described first adjusting screw 401 still is combined in described first screw 24, do not need the pulling force of chain 200 that described slide block 20 is moved along the direction that second adjusting screw 402 screws out.
Fig. 9 is the 7th embodiment's of the utility model transmission tightening mechanism a partial exploded view, as shown in Figure 9, different with embodiment six is, described adjusting screw comprises with first block of described block 30 upsides regulates first adjusting screw 411 that screw 311 cooperates, and second adjusting screw 402 that cooperates with second block adjusting screw 312 of described block 30 downsides, the screw rod 4112 of described first adjusting screw 411 comprises external screw rod 4112a and inner screw 4112b, and the pitch of described external screw rod 4112a is less than the pitch of described inner screw 4112b.
During assembling, earlier described first block of described first adjusting screw 411 precessions is regulated screw 311, described second block of described second adjusting screw 402 precessions is regulated screw 312, make the screw rod 4112 of described first adjusting screw 411 just stretch out described block 30, the opening that makes described external screw rod 4112a portion and respective slide regulate screw 24 contacts, and described slide block 20 is contacted with described block 30, then described slide block 20 is placed described directly on guide groove 11, described positioning screwn 50 is passed described location elongated slot 23 be combined in the described through hole 12, at last described block 30 is fixed on described straight opening to guide groove 11 by described set screw 60 and gets final product.
When needs increase the described axial distance that tightens wheel 22, on the one hand, two second blocks of two second described block 30 downsides of adjusting screw 402 precessions of described block 30 downsides are regulated in the screws 31, the screw rod of described second adjusting screw 402 is stretched out, thereby and contact with slide block 20 and to promote described slide block 20; On the other hand, first adjusting screw 411 of described block 30 upsides of precession, because the pitch of described external screw rod 4112a is less than the pitch of described inner screw 4112b, the described slide block of described external screw rod 4112a precession is regulated the speed of the speed of screw 24 less than described first block adjusting of described inner screw 4112b precession screw 311, and described block 30 be fixed on described directly to the opening end of guide groove 11, thereby described slide block 20 is done the straight line motion away from described block 30, i.e. the described slide block 20 of realization promotion.Like this, do straight line motion, make the chain 22 that tightens installation on the wheel 22 obtain tightening, increased the tension force of chain 22 thereby selection adjusting first adjusting screw 411 or selection adjusting second adjusting screw 402 promote described slide block 20.
When needs reduce the described axial distance that tightens wheel 22, on the one hand second adjusting screw 412 is screwed out from described block 30; Meanwhile, screw out described first adjusting screw 411, at this moment, described slide block 20 is done the straight line motion near described block 30, thereby makes the chain 200 that tightens installation on the wheel 22 obtain transferring pine, has reduced the tension force of described chain 200.Because described first adjusting screw 411 still is combined in described first screw 24, do not need the pulling force of chain 200 that described slide block 20 is moved along the direction that second adjusting screw 412 screws out.
It should be noted that, thereby the mode that described slide block 20 can pass the described through hole 12 of described location elongated slot 23 precessions by described positioning screwn directly engages and is slidingly connected to guide groove 11 with described, also can directly engage and is slidingly connected to guide groove 11 with described by other modes.
Abovely the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to the essence of present embodiment in conjunction with most preferred embodiment.
Claims (10)
1. transmission tightening mechanism, it is characterized in that: comprise fixed plate, slide block, block and adjusting screw, described fixed plate has directly to guide groove, a described side of directly being located at described fixed plate to the opening of guide groove, described slide block directly engages and is slidingly connected to guide groove with described, described slide block is equipped with and stretches out described straight fulcrum to guide groove, be equipped with on the described fulcrum and tighten wheel, described link stopper is fixedly connected on described straight opening to guide groove, offer the block that is complementary with described adjusting screw on the described block and regulate screw, described adjusting screw is revolved and is passed described block and regulate screw and contact with described slide block.
2. transmission tightening mechanism as claimed in claim 1, it is characterized in that: describedly directly comprise rail portion and groove portion to guide groove, described slide block comprises two lateral mass and boss, two described lateral mass are positioned at the both sides of described boss top, two described lateral mass are fixedlyed connected with described boss, described boss is placed in the described groove portion, and two described lateral mass place on the described rail portion.
3. transmission tightening mechanism as claimed in claim 2, it is characterized in that: also comprise positioning screwn, have the location elongated slot on the two described lateral mass, elongated slot place, the corresponding described location of described rail portion has through hole, and described positioning screwn passes described location elongated slot and is combined in the described through hole.
4. transmission tightening mechanism as claimed in claim 1 is characterized in that: the adjacent end with described block of described slide block is provided with the corresponding slide block of described adjusting screw and regulates screw.
5. transmission tightening mechanism as claimed in claim 4, it is characterized in that: the screw rod of described adjusting screw comprises external screw rod that cooperates with slide block adjusting screw and the inner screw that cooperates with described block adjusting screw, the diameter of described external screw rod is less than the diameter of described inner screw, and the pitch of described external screw rod is not equal to the pitch of described inner screw.
6. transmission tightening mechanism as claimed in claim 4 is characterized in that: described adjusting screw is a stainless steel screw.
7. transmission tightening mechanism as claimed in claim 4 is characterized in that: described adjusting screw is a fine thread screw, and described block regulates screw and described slide block adjusting screw is the closely-pitched screw.
8. transmission tightening mechanism as claimed in claim 1 is characterized in that: described adjusting screw is provided with the locking nut to described slide block location.
9. transmission tightening mechanism as claimed in claim 1 is characterized in that: described fixed plate is provided with the stroke cuing scale, and the corresponding described stroke cuing scale of described slide block is provided with the stroke pointer.
10. transmission tightening mechanism as claimed in claim 1 is characterized in that: described fixed plate is provided with proximity detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202367880U CN201539542U (en) | 2009-09-30 | 2009-09-30 | Transmission tightening mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202367880U CN201539542U (en) | 2009-09-30 | 2009-09-30 | Transmission tightening mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539542U true CN201539542U (en) | 2010-08-04 |
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ID=42590994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202367880U Expired - Lifetime CN201539542U (en) | 2009-09-30 | 2009-09-30 | Transmission tightening mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672351B (en) * | 2009-09-30 | 2011-05-11 | 东莞宏威数码机械有限公司 | Tightening mechanism |
-
2009
- 2009-09-30 CN CN2009202367880U patent/CN201539542U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672351B (en) * | 2009-09-30 | 2011-05-11 | 东莞宏威数码机械有限公司 | Tightening mechanism |
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