CN201347207Y

CN201347207Y - Picking and laying belt device of tightener

Info

Publication number: CN201347207Y
Application number: CNU2008201990047U
Authority: CN
Inventors: 阮卜琴
Original assignee: Zhejiang Topsun Logistic Control Co Ltd
Current assignee: Zhejiang Topsun Logistic Control Co Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-11-18
Anticipated expiration: 2018-12-29

Abstract

The utility model provides a belt retracting and unwinding device of a tightener, which belongs to the technical field of machinery. It solves the problems of time-consuming and labor-intensive operation, inconvenient use, short service life and the like of the existing tightener. The belt retracting device of the tightener is connected with a rotatable belt shaft on the bracket of the tightener, and one end of the belt shaft protrudes from the bracket, including a casing fixedly connected to the side of the bracket and a worm screw arranged in the casing, The worm shaft and the worm wheel, the worm wheel is fixedly connected to the protruding end of the belt shaft, the worm shaft is arranged on the side of the worm wheel and can move in the housing along its axial direction, the worm is sleeved on the worm shaft and the two are fixed together, the device It also includes a positioning piece that is fixed inside the housing and can be embedded in the worm gear. The outer end of the worm shaft protrudes from the housing. When the worm shaft rotates, the worm shaft can move axially to engage the worm with the worm gear and disengage the worm. Positioner. The utility model has the advantages of simple and convenient operation, high use stability, high practical value and low cost.

Description

Twist the belt-retracting device of tight device

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of tight device of strand, capstan winch that is used in the restraint of loads of logistics transportation, particularly twists the belt-retracting device of tape spool in the tight device.

Background technology

In the vehicular transport goods process, goods needs binding usually, comes off when the running car or collides mutually and cause and lose or damage to prevent goods.Though the mode that directly bundlees with rope is in daily use, and wastes time and energy, and is difficult to the goods tighten.Twist the binding tools that tight device is a kind of advanced person.Adopt not only convenient but also safety of the tight device restraint of loads of strand, be subjected to the welcome of vast chaufeur deeply.

The tight device of existing strand is made up of support, tape spool and bundling belt usually.Tape spool is connected on the support and tape spool turns, and the binding roll coil of strip is on tape spool.The outer end of stretching out support at tape spool is provided with the crow bar hole.When needing restraint of loads, crow bar is inserted in the crow bar hole, rotate crow bar and can drive the tape spool rotation.But the moving certain angle of revolution all needs crow bar to be extracted and inserted again, obviously, makes that like this binding efficient is not high, wastes time and energy, and is difficult to goods is bound.

People have designed various quick binding apparatus for this reason, and the worm gear that for example is connected on tape spool connects the worm screw that can move along its axis on support.Worm and wheel engagement in the taut band process, this moment, worm gear can only unidirectional rotation, and obviously, tape spool also can only unidirectional rotation, thereby makes that bundling belt is tightened up, and goods is bundled firmly.

On the contrary, when needing quick pine to be with, the operator spurs worm screw, makes worm and wheel separate, the oppositely directed twirl of tape spool energy this moment, thus will ease out around the bundling belt fast speed on the tape spool.

Obviously, though above-mentioned binding apparatus can be realized the control of tape spool,, worm screw is by operator's pulling, complex operation.Simultaneously, after worm and wheel separates, because worm screw not location lives, worm screw can touch on worm gear, worm gear rotates the noise that can send " clatter clatter " sound with the worm screw touching in using the tight device process of strand, so not only make and twist in the tight device use and can make a noise, and the teeth of worm screw, worm gear are worn and torn too early.

Existing other twists tight device and also exists similar problem.

Summary of the invention

The purpose of this utility model is at existing in prior technology the problems referred to above, and providing a kind of does not need the operator to spur worm screw, uses simply, makes to twist the belt-retracting device of tight device stability in use than the higher tight device of strand.

The purpose of this utility model can realize by following technical proposal: a kind of belt-retracting device that twists tight device, twist on the support of tight device and be connected with the tape spool that can rotate, one end of tape spool stretches out support, this device comprises the housing that is connected in stent side portion and is located at the interior worm screw of housing, worm shaft and worm gear, worm gear is connected in the external part of tape spool, worm shaft is located at the sidepiece of worm gear and can be axially moved in housing along it, described worm screw is placed on the worm shaft and both are fixed together, it is characterized in that, this device also comprises a locations that is connected in the housing inboard and can be embedded in worm screw wrom tooth place, housing is stretched out in above-mentioned worm shaft outer end, when the worm shaft rotation, worm shaft can move axially and make the worm and wheel engagement and make worm screw break away from locations.

In the belt-retracting device of the above-mentioned tight device of strand, described hull outside axial restraint has pivoted housing, and pivoted housing and above-mentioned worm shaft outer end are circumferentially fixing.

Twist in the tape spool rotation process on the tight device and just bundling belt can be tightened up, thereby the goods on the automobile is firmly bundled by the bundling belt that tightens up.

When worm and wheel was in released state, the wrom tooth on the worm screw contacted with locations.Only otherwise the rotary worm axle, worm and wheel just can not mesh all the time.Obviously, this moment, worm gear energy backward rotation that is to say that tape spool is not locked, made bundling belt to ease out by fast speed.

In the restraint of loads process, rotary worm axle outer end, because locations is to be embedded on the wrom tooth of worm screw, and locations is fixed, so just makes can move along its axis in the worm shaft rotation process.Worm screw will mesh with worm gear after worm shaft moves a segment distance, and after worm and wheel meshed fully, the wrom tooth of worm screw was deviate from from locations.Because worm and gear has reverse auto-lock function, this moment, worm gear can only unidirectional rotation, and tape spool is along with just tightening up bundling belt in the unidirectional rotation process, owing to tape spool can't backward rotation, finally so just bundling belt was tightened up, and Goods binding is lived.

In the belt-retracting device of the above-mentioned tight device of strand, the sidepiece at place, described worm shaft outer end has teeth, and described pivoted housing inboard has the groove that is complementary with teeth, and above-mentioned teeth are embedded in groove.

After pivoted housing is enclosed within the worm shaft end, make between pivoted housing and the worm shaft to circumferentially fixing by teeth and groove.

In the belt-retracting device of the above-mentioned tight device of strand, described worm shaft moves the back worm and wheel to its outer end to be separated, and locations is embedded in the wrom tooth place of worm screw.

Obviously, during owing to the worm and wheel released state, locations contacts all the time with worm screw.The rotation pivoted housing just can make and make worm screw, worm shaft together move in the worm screw rotation process.

In the belt-retracting device of the above-mentioned tight device of strand, be provided with spring between described pivoted housing and the worm shaft.When worm shaft worm and wheel after move its outer end separates and the two ends of spring act on respectively on worm shaft and the pivoted housing, the wrom tooth of worm screw end is resisted against on the locations under the elastic force effect of spring.

When worm screw did not mesh with worm gear, the two ends of spring roof pressure respectively made wrom tooth of worm screw and locations remain contact condition on worm shaft and pivoted housing like this.Thereby make and rotate in the pivoted housing process and can worm screw be moved.

In the belt-retracting device of the above-mentioned tight device of strand, be fixed with adapter plate on the described housing, the described pivoted housing outside has the convex edge of protrusion, and above-mentioned pivoted housing passes adapter plate and the convex edge is between adapter plate and the housing.

Obviously, the convex edge that is between adapter plate and the housing just has been positioned at pivoted housing on the housing, and simultaneously, pivoted housing can rotate.

In the belt-retracting device of the above-mentioned tight device of strand, described locations is a locating dowel pin, and locating dowel pin is warhead shape and the less head of its size can contact with above-mentioned worm gear wrom tooth.Locating dowel pin directly is connected in the housing and gets final product.

In the belt-retracting device of the above-mentioned tight device of strand, described locations is locating dowel pin and screw, described housing be provided with run through and its sidepiece have the retaining rank connecting bore, the sidepiece of locating dowel pin one end has the shoulder block of protrusion, screw is between screw and the retaining rank by the shoulder block that is threadedly connected to connection hole and above-mentioned locating dowel pin, and the other end of locating dowel pin is positioned at enclosure interior.

After screw is connected the connection hole, just locating dowel pin can be pushed down,, so just make that locating dowel pin was that part is stretched in enclosure interior when locating dowel pin was fixed because the shoulder block of locating dowel pin is pressed in place, connecting bore retaining rank again simultaneously.

In the belt-retracting device of the above-mentioned tight device of strand, be provided with damper element between described locating dowel pin and the screw.Make that under the effect of damper element the displacement that locating dowel pin can trace in loading process is moving, make contact reliably between locating dowel pin and the worm screw.

In the belt-retracting device of the above-mentioned tight device of strand, described damper element is a rubber sheet gasket.

In the belt-retracting device of the above-mentioned tight device of strand, described damper element is a spring.

Make that under the effect of rubber sheet gasket or spring locating dowel pin can microdisplacement.

In the belt-retracting device of the above-mentioned tight device of strand, described housing has fixedly connected to the inner side pad, and pad is corresponding with the worm screw position.

Can contact with pad after worm screw is moved, obviously, can avoid worm screw directly to touch on the housing by pad.

In the belt-retracting device of the above-mentioned tight device of strand, described hull outside is provided with oil nozzle.Lubricating oil can be injected in the housing by oil nozzle, thereby the worm and worm wheel place is lubricated.

Compared with prior art, this belt-retracting device that twists tight device only need rotate pivoted housing, just can make the worm and wheel engagement under the effect of locations; The turn-back pivoted housing can also make worm and wheel separate.So just realized the control of tape spool, therefore, it is easy and simple to handle.

Simultaneously, in case after worm and wheel breaks away from, only otherwise rotate the pivoted housing worm and wheel and can not mesh all the time.Obviously, in pine band process, improve the stability in use that twists tight device, had the higher utility of ratio.

In addition, this device just is made up of worm screw, worm gear and locations and pivoted housing etc., and structure is also fairly simple, and cost is lower.

Description of drawings

Fig. 1 is the perspective view with tight device of strand of this belt-retracting device that twists tight device.

Fig. 2 is that this twists the structural representation when worm and wheel separates in the belt-retracting device of tight device.

Fig. 3 is this structural representation when twisting worm and wheel engagement in the belt-retracting device of tight device.

Among the figure, 1, support; 2, tape spool; 3, housing; 3a, connecting bore; 3b, retaining rank; 4, worm screw; 4a, teeth; 4b, worm shaft; 5, worm gear; 6, locations; 6a, screw; 6b, rubber sheet gasket; 6c, locating dowel pin; 6d, shoulder block; 7, pivoted housing; 7a, groove; 7b, convex edge; 8, adapter plate; 9, spring; 10, pad; 11, oil nozzle.

The specific embodiment

As shown in Figure 1, twisting tight utensil has a support 1, is connected with tape spool 2 on support 1, and an end of tape spool 2 stretches out support 1.

As shown in Figure 2, at the sidepiece of support 1 housing 3 that an inside is cavity that is being connected, this belt-retracting device that twists tight device just is arranged on housing 3 places.This device comprises parts such as worm screw 4, worm shaft 4b, worm gear 5, locations 6 and pivoted housing 7.

Worm screw 4 is socketed in that worm shaft 4b goes up and worm screw 4 and worm shaft 4b are fixed together.

Worm gear 5 is connected in the external part of tape spool 2, and worm shaft 4b also is located in the housing 3, and the end that worm shaft 4b is positioned at worm gear 5 sidepieces and worm shaft 4b passes housing 3, has some teeth 4a that axially are provided with along worm shaft 4b in the outside of worm shaft 4b.

Pivoted housing 7 inboards have the groove 7a that is complementary with teeth 4a, and the teeth 4a in worm gear 5 outsides is embedded in groove 7a place.After pivoted housing 7 is enclosed within worm shaft 4b end, make between pivoted housing 7 and the worm shaft 4b to circumferentially fixing by teeth 4a and groove 7a.

The end of pivoted housing 7 has the convex edge 7b that protrudes laterally, also is fixed with an adapter plate 8 on housing 3, and the convex edge 7b that pivoted housing 7 passes adapter plate 8 and pivoted housing 7 is between adapter plate 8 and the housing 3.That is to say that pivoted housing 7 can not move, but it can rotate.

Also be provided with locations 6 on housing 3, locations 6 is made up of screw 6a, rubber sheet gasket 6b and locating dowel pin 6c, and certainly according to actual conditions, it also is feasible adopting spring 9 to replace rubber sheet gasket 6b.Have a connecting bore 3a who runs through on housing 3, connecting bore 3a has the stepped hole that protrudes retaining rank 3b.The end of locating dowel pin 6c has the shoulder block 6d that is complementary with retaining rank 3b, and screw 6a is by after being threaded on the connecting bore 3a, and screw 6a is pressed on the locating dowel pin 6c, and above-mentioned rubber sheet gasket 6b just is provided with between screw 6a and the locating dowel pin 6c.And the other end of locating dowel pin 6c is that part is stretched in housing 3 in-to-ins.

In the present embodiment, between pivoted housing 7 and worm screw 4, be provided with spring 9.When worm screw 4 moves to a rear flank, spring 9 is strained conditiones, that is to say that the wrom tooth of worm screw 4 is resisted against on the locating dowel pin 6c under the elastic force effect of spring 9.And this moment, worm screw 4 did not mesh with worm gear 5.

After worm screw 4 moved to opposite side, spring 9 was strained conditiones not.Worm screw 4 and worm gear 5 engagements, and locating dowel pin 6c does not contact with the wrom tooth of worm screw 4.

As shown in Figure 2, the tight device of strand with this device is when pine is with, and worm screw 4 does not mesh with worm gear 5, and the wrom tooth on worm screw 4 under the elastic force effect of spring 9 is to be resisted against on the locating dowel pin 6c always.Only otherwise rotate pivoted housing 7, worm screw 4 just can or not contact with worm gear 5 engagements all the time.At this moment, worm gear 5 can freely rotate, and corresponding tape spool 2 has just been finished the purpose of unclamping bundling belt in free rotation process.

As shown in Figure 3, when needing restraint of loads, reverse pivoted housing 7, drive worm screw 4 in pivoted housing 7 rotation processes and together rotate, because the wrom tooth of worm screw 4 contacts with locating dowel pin 6c.So just make worm screw 4 in rotation process, can move along its axis.Worm screw 4 can mesh with worm gear 5 after moving a segment distance, and locating dowel pin 6c still contacts with the wrom tooth of worm screw 4 in this process.When worm screw 4 and worm gear 5 meshed fully, locating dowel pin 6c deviate from from the wrom tooth of worm screw 4.Under this state, worm gear 5 can only unidirectional rotation, oppositely has self-locking and can't rotate, and promptly drives tape spool 2 unidirectional rotation all the time in the worm gear 5 unidirectional rotation processes.Thereby the tape spool by unidirectional rotation 2 tightens up bundling belt, and goods is bundled firmly.In the present embodiment, fixedly connected to the inner side pad 10 at housing 3, pad 10 is corresponding with worm screw 4 end positions, avoids worm screw 4 directly to touch housing 3 inboards by pad 10.

In addition, for worm screw 4 and worm gear 5 places are lubricated, also be provided with the oil nozzle 11 that is used to inject lubricating oil in housing 3 outsides.

Claims

1. A belt retracting device for a tightener. The bracket (1) of the tightener is connected with a rotatable belt shaft (2), and one end of the belt shaft (2) extends out of the bracket (1). The device includes The casing (3) fixedly connected to the side of the bracket (1) and the worm (4), worm shaft (4b) and worm wheel (5) arranged in the casing (3), the worm wheel (5) is fixedly connected to the belt shaft The extended end of (2), the worm shaft (4b) is arranged on the side of the worm wheel (5) and can move in the housing (3) along its axial direction, and the worm (4) is sleeved on the worm shaft (4b ) and the two are fixed together, it is characterized in that the device also includes a positioning piece (6) that is fixed on the inner side of the housing (3) and can be embedded in the worm gear of the worm (4), the above-mentioned worm shaft (4b) The outer end protrudes from the casing (3), when the worm shaft (4b) rotates, the worm shaft (4b) can move axially to make the worm (4) mesh with the worm wheel (5) and make the worm (4) out of the positioning member (6).

2. The belt retracting device of the tightener according to claim 1, characterized in that, a rotary sleeve (7) is axially fixed on the outer side of the housing (3), and the rotary sleeve (7) is connected with the above-mentioned worm The outer end of the shaft (4b) is fixed circumferentially.

3. The take-up and release belt device of the winch according to claim 2, characterized in that, the side portion at the outer end of the worm shaft (4b) has teeth (4a), and the rotating sleeve (7 ) inside has a groove (7a) matching with the teeth (4a), and the above teeth (4a) are embedded in the groove (7a).

4. The belt take-up and release device of the winch according to claim 1, 2 or 3, characterized in that, after the worm shaft (4b) moves to its outer end, the worm (4) is separated from the worm wheel (5) , and the positioning piece (6) is embedded in the worm teeth of the worm (4).

5. The belt retracting device of the tightener according to claim 3, characterized in that a spring (9) is provided between the swivel sleeve (7) and the worm shaft (4b).

6. According to claim 1, 2 or 3, the belt retracting device of the tightener is characterized in that, the housing (3) is fixedly connected with a fixing plate (8), and the rotating sleeve ( 7) There is a protruding flange (7b) on the outside, the above-mentioned rotary sleeve (7) passes through the fixing plate (8) and the flange (7b) is between the fixing plate (8) and the housing (3).

7. The belt retracting device of the tightener according to claim 6, characterized in that, the positioning member (6) is a positioning pin (6c), and the positioning pin (6c) is bullet-shaped and its size is small The head can contact with above-mentioned worm gear (5) worm tooth.

8. The belt retracting device of the tightener according to claim 6, characterized in that, the positioning member (6) is a positioning pin (6c) and a screw (6a), and the casing (3) There is a through connecting hole (3a) with a step (3b) on its side, a protruding shoulder (6d) on the side of one end of the positioning pin (6c), and the screw (6a) is threaded into the connecting hole (3a) and the shoulder (6d) of the positioning pin (6c) is between the screw (6a) and the step (3b), and the other end of the positioning pin (6c) is located inside the housing (3).

9. The belt retracting device for a tightener according to claim 8, characterized in that a buffer is provided between the positioning pin (6c) and the screw (6a).

10. The belt take-up and release device of the tightener according to claim 9, characterized in that, the buffer member is a rubber gasket (6b) or a spring (9).