CN201347204Y - Tightener picking and laying belt device - Google Patents

Abstract

The utility model provides a tightener picking and laying belt device, and relates to a tightener, which solves the problems of the prior tightener picking and laying belt device that the tensile force of the binding belt cannot be detected, and the device is unstable, and the operation is complicated, and the structure is complex. A rotary tape spool is arranged on a bracket of the tightener, and one end of the tape spool extends out of the bracket, and the device comprises a box body, a worm, a worm shaft and a worm gear, wherein the worm is sleeved on the worm shaft and is fixedly connected with the worm shaft, and the device also comprises a sensor; after the worm shaft is moved away, the inner end surface of the worm shaft can be pushed against the sensor, so that the sensor produces a signal corresponding to the tensile force of the binding belt; and the sensor comprises a sheet compressed block, and one end surface of the compressed block faces towards the inner end surface of the worm shaft, and the other end surface faces towards the box body, and the end surface is provided with a plurality of resistance strain foils which are uniformly distributed. The tightener picking and laying belt device has the advantages of simple structure, convenient operation, intelligentization, safe application and the like.

Description

Belt-retracting device for tightener

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 shipping goods process, goods needs binding usually, the time comes off or collides mutually and cause and lose or damage in transportation 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 conveying people 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 for example, Chinese patent literature once disclosed a kind of boomer [Chinese patent application 91232922.X of bale cargo; Publication number CN2109989A], it is characterized in that: it is made up of support, solid rope device, tight rope device and crank, support is a U type body frame, in the support upper end, the solid rope device of being made up of strap, sliding clamp and screw shaft is housed, in the bottom of support, adorning the tight rope device, the tight rope device is made up of worm screw, worm gear, worm-wheel shaft, rolling wheel.This patent is mainly utilized the self-locking performance of worm and gear transmission, has solved the part technological deficiency that exists in the prior art.

But various quick binding apparatus of the prior art in use can't be known the tensile force size of bundling belt, usually can cause the bundling belt tensile force too small or excessive; Therefore cause bundling tension easily goods is caused damage, bundling belt fracture, perhaps goods transport is impacted because binding is tight inadequately.On the other hand, when restraint of loads, all can there be difference in the dynamics when binding in different positions for various goods or identical goods, and this has just increased the difficulty of controlling by manually more.In addition, in transportation, the bundling belt tensile force size of each binding apparatus also can change, and needs in time to find, in time handles.

Summary of the invention

The purpose of this utility model is at the problems referred to above, provides a kind of and can detect bundling belt tensile force size in real time in the tight device working process of strand, be convenient to the tight device of pair twist and control, and the high belt-retracting device for tightener of accuracy of detection.

For achieving the above object, the utility model has adopted following technical proposal: this belt-retracting device for tightener, on the support of the tight device of strand, be provided with the tape spool that can rotate, one end of tape spool stretches out support, this device comprises the casing that is connected in stent side portion and is located at the interior worm screw of casing, worm shaft and worm gear, worm gear is connected in the external part of tape spool, worm screw is placed on the worm shaft and both are fixed together, worm shaft is located at the sidepiece of worm gear and can be axially moved in casing along it, it is characterized in that, this device also comprises the sensor that is arranged between casing and the worm shaft inner end surface, the worm shaft inner end surface can lean and make sensor to produce and the corresponding signal of bundling belt tensile force size with sensor mutually after worm shaft moves, described sensor comprises the compression block of sheet, an end face of compression block is towards the worm shaft inner end surface, and the other end is provided with some well-distributed resistance strain gages towards casing and at this end face.

Because the tight device of strand is in when work, axial stressed of bundling belt tensile force and the tight device worm shaft of strand is corresponding, twists axial stressed big more of tight device worm shaft, and the bundling belt tensile force on the tape spool is also big more.For this reason, the utility model is arranged on sensor between housing and the worm shaft, can detect the size of bundling belt tensile force like this when the sensor pressurized easily, so that in time grasp the mode of operation of the tight device of strand.

The principle of work of resistance strain type sensor is as follows: elastic body produces elastic deformation under external force, make the resistance strain gage that sticks on his surface also in company with producing distortion, after the resistance strain gage distortion, its resistance will change (increase or reduce), through corresponding metering circuit this resistance variations is converted to electric signal (voltage or electric current) again, thereby has finished the process that external force is transformed to electric signal.In the utility model, under the effect of compression block at stressed member slight deformation can take place, rectangular distribution resistance strain gage thereon also can deform like this, thereby produces and the corresponding electric signal of pressure size.Because resistance strain gage is a well-distributed, can make measurement more accurate.

In above-mentioned belt-retracting device for tightener, be fixed with on the described casing that sensor stops up and both by being threaded, the end face that compression block is provided with resistance strain gage stops up and stops up inner end surface with sensor towards sensor and contacts.

Stop up easily by sensor that sensor is installed in the casing, make sensor can be subjected to the roof pressure power of worm shaft.Since sensor stop up with casing between by being threaded, can be convenient to debugging.

In above-mentioned belt-retracting device for tightener, described sensor stops up the inner and has groove, and the resistance strain gage on the above-mentioned compression block is arranged in groove.

Owing to be provided with groove, the part of compression block is subjected to the support that sensor stops up inner end surface, and another part is built on stilts.It is to produce deformation for the ease of compression block when stressed that groove is set.

In above-mentioned belt-retracting device for tightener, on stopping up, described sensor has the wire guide that connects with groove, be connected with lead on the described resistance strain gage, and above-mentioned lead passes wire guide and extends to outside the casing.Offer wire guide and be in order to realize wiring, be convenient to the signal that resistance strain gage produces sent out and handle.

In above-mentioned belt-retracting device for tightener, be provided with when worm shaft rotates between described casing and the worm screw or between casing and the worm shaft and can drive the guide that worm shaft moves along its axis.

In above-mentioned belt-retracting device for tightener, described guide is to be connected in box inside and can be embedded in locations in the worm screw wrom tooth, and worm and wheel engagement and worm screw break away from locations after worm shaft moves along its axis.

In the restraint of loads process, during the rotary worm axle, 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.

As another kind of scheme, in above-mentioned belt-retracting device for tightener, described guide is the section of being located on the worm shaft of being threaded and the threaded connection hole of being located on the casing, and the section of being threaded and threaded connection hole energy thread connection, the worm and wheel engagement and the section of being threaded break away from threaded connection hole after worm shaft moves along its axis.

When the section of being threaded connects with threaded connection hole, it is moved along screw thread.In case when the Duan Buyu threaded connection hole that is threaded of worm shaft connected, the worm and wheel engagement made that driving worm gear by worm screw when worm shaft rotates rotates.

In above-mentioned belt-retracting device for tightener, the outer end of described worm shaft is stretched out casing and is provided with pivoted housing in the worm shaft outer end, and described pivoted housing and worm shaft are circumferentially fixing, and pivoted housing is axially fixed in the casing outside.

Because pivoted housing is axially fixed in the casing outside and circumferentially fixing with the worm shaft outer end, when pivoted housing drives the worm shaft rotation, worm shaft just can be realized moving axially under the effect of guide automatically, and is very easy to use, need not manually worm shaft along its axial propelling movement.

In above-mentioned belt-retracting device for tightener, 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.

When worm screw during with the engagement of worm gear, the two ends of spring roof pressure respectively make 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 above-mentioned belt-retracting device for tightener, described casing is provided with actuating unit, described actuating unit links by speed reduction gearing and pivoted housing and can drive pivoted housing and rotates, described actuating unit is electrical motor or air motor, described speed reduction gearing is a reducing gearbox, and this reducing gearbox comprises gear case and is arranged on several interior intermeshing reducing gear of gear case.

Improved the degree of automation of twisting tight device use greatly by actuating unit, be convenient to control, time saving and energy saving.

Compared with prior art, the advantage of this belt-retracting device for tightener is: 1, can detect the tensile force size of bundling belt by sensor in real time, make the use of the tight device of strand more convenient and safe, bundling belt tensile force size appropriateness.2, only need to rotate pivoted housing, under the effect of locations, just can make the worm and wheel engagement; The backward rotation pivoted housing can also make worm and wheel separate.So just realized the control of tape spool, easy and simple to handle.In case after 3 worm and wheels broke away from, only otherwise rotate pivoted housing, worm and wheel can not mesh all the time, has improved the stability in use in pine band process.

Description of drawings

Fig. 1 is the block diagram that the utility model provides.

Fig. 2 is the cutaway view when worm screw does not act on sensor among the embodiment 1 that provides of the utility model.

Fig. 3 is the cutaway view when worm screw acts on sensor among the embodiment 1 that provides of the utility model.

Fig. 4 is the cutaway view when worm screw does not act on sensor among the embodiment 2 that provides of the utility model.

Fig. 5 is the cutaway view when worm screw acts on sensor among the embodiment 3 that provides of the utility model.

Fig. 6 is the enlarged drawing of the sensor that provides of the utility model.

Among the figure, sensor 12, compression block 12a, resistance strain gage 12b, sensor stop up 12c, groove 12d, wire guide 12e, lead 12f, actuating unit 13, support 2, tape spool 3, casing 5, worm screw 53, worm shaft 54, worm shaft inner end surface 54a, worm gear 55, locations 57, pivoted housing 58, spring 59, the section of being threaded 61, threaded connection hole 62.

The specific embodiment

Embodiment 1:

As shown in Figure 1, twisting tight utensil has a support 2, is connected with tape spool 3 on support 2, and an end of tape spool 3 stretches out support 2 and is connected with belt-retracting device.

As shown in Figures 2 and 3, this belt-retracting device for tightener comprises parts such as casing 5, worm screw 53, worm shaft 54, worm gear 55, sensor 12, locations 57, pivoted housing 58, spring 59.

At the sidepiece of support 2 casing 5 that an inside is cavity that is being connected, worm screw 53, worm shaft 54 and worm gear 55 are located in the casing 5.Worm screw 53 is placed on the worm shaft 54 and both are fixed together, certainly worm screw 53 here and worm shaft 54 structure that also can adopt the formula of fusing.Worm gear 55 is connected in the external part of tape spool 3, and worm shaft 54 is located at the sidepiece of worm gear 55 and can be axially moved in casing 5 along it.

Between casing 5 and worm screw 53, be provided with the guide that moves along its axis when worm shaft 54 rotation energys driving worm shaft 54.Guide is that to be connected in casing 5 inboard and can be embedded in locations 57 in worm screw 53 wrom tooths.Worm screw 53 breaks away from locations 57 with worm gear 55 engagements and worm screw 53 after worm shaft 54 moves along its axis.When worm screw 53 and worm gear 55 were in released state, the wrom tooth on the worm screw 53 contacted with locations 57.Only otherwise rotary worm axle 54, worm screw 53 just can not mesh all the time with worm gear 55.Obviously, this moment, worm gear 55 energy backward rotation that is to say that tape spool 3 is not locked, made bundling belt to ease out by fast speed.In the restraint of loads process, during rotary worm axle 54, because locations 57 is embedded on the worm screw wrom tooth, and locations 57 is fixed, so just makes can move along its axis in worm shaft 54 rotation processes.Worm screw 53 will mesh with worm gear 55 after worm shaft 54 moves a segment distance, and after worm screw 53 and worm gear 55 meshed fully, the wrom tooth of worm screw 53 was deviate from from locations 57.Because worm gear 55 worm screws 53 have reverse auto-lock function, this moment, worm gear 55 can only unidirectional rotation, and tape spool 3 is along with just tightening up bundling belt in the unidirectional rotation process, owing to tape spool 3 can't backward rotation, finally so just bundling belt was tightened up, and Goods binding is lived.

It is circumferentially fixing that casing 5 and worm shaft 54 outer ends and pivoted housing 58 are stretched out in the outer end of above-mentioned worm shaft 54, and pivoted housing 58 is axially fixed in casing 5 outsides.Between pivoted housing 58 and worm shaft 54, be provided with spring 59, when worm shaft 54 worm screw 53 after move its outer end separates with worm gear 55 and the two ends of spring 59 act on respectively on worm shaft 54 and the pivoted housing 58.Because pivoted housing 58 is axially fixed in casing 5 outsides and circumferentially fixing with worm shaft 54 outer ends, when pivoted housing 58 drives worm shaft 54 rotations, worm shaft 54 just can be realized moving axially under the effect of guide automatically, and is very easy to use, need not manually worm shaft 54 along its axial propelling movement.When worm screw 53 during with worm gear 55 engagements, the two ends of spring 59 roof pressure respectively make wrom tooth of worm screw 53 and locations 57 remain contact condition on worm shaft 54 and pivoted housing 58 like this.Thereby making to rotate in pivoted housing 58 processes to make worm screw 53 move smoothly.

As shown in Figure 1, in the present embodiment, be connected with the actuating unit 13 that is arranged on the casing 5 on the worm shaft 54, actuating unit 13 links by speed reduction gearing and pivoted housing 58 and can drive worm shaft 54 by pivoted housing 58 and rotates.Wherein, actuating unit 13 is electrical motor or air motor; Speed reduction gearing is a reducing gearbox.This reducing gearbox comprises gear case and is arranged on several interior intermeshing reducing gear of gear case.The input end of reducing gearbox and actuating unit 13 link, and mouth and pivoted housing 58 link.

Shown in Fig. 2 and 3, this installs this device and also comprises the sensor 12 that is arranged between casing 5 and the worm shaft inner end surface 54a.After worm shaft 54 moved, worm shaft inner end surface 54a can lean and make sensor 12 to produce and the corresponding signal of bundling belt tensile force size with sensor 12 mutually.As shown in Figure 6, this sensor 12 comprises the compression block 12a of sheet, and the end face of compression block 12a is towards worm shaft inner end surface 54a, and the other end is provided with some well-distributed resistance strain gage 12b towards casing 5 and at this end face.Be fixed with sensor on the casing 5 and stop up 12c and both by being threaded, by sensor stop up 12c easily sensor 12 be installed in the casing 5, make sensor 12 can be subjected to the roof pressure power of worm shaft 54.Because sensor stops up between 12c and the casing 5 by being threaded, and can be convenient to debug.The end face that compression block 12a is provided with resistance strain gage 12b contacts towards sensor obstruction 12c and with sensor obstruction 12c inner end surface.Sensor stops up 12c the inner and has groove 12d, and the resistance strain gage 12b on the above-mentioned compression block 12a is arranged in groove 12d.Sensor stops up and to have the wire guide 12e that connects with groove 12d on the 12c, is connected with lead 12f on the resistance strain gage 12b, and above-mentioned lead 12f passes wire guide 12e and extends to outside the casing 5.

Twist tight device in when work, axial stressed of the tight device worm shaft of bundling belt tensile force and strand 54 is corresponding, can detect the size of bundling belt tensile force easily when sensor 12 pressurizeds, so that in time grasp the mode of operation of the tight device of strand.

Embodiment 2:

In the present embodiment, shown in Figure 4 and 5, be provided with between casing 5 and the worm screw 53 when worm shaft 54 rotates and drive the guide that worm shaft 54 moves along its axis.Guide is the section of being located on the worm shaft 54 of being threaded 61 and the threaded connection hole of being located on the casing 5 62, and section of being threaded 61 and threaded connection hole 62 energy thread connection, worm screw 53 and worm gear 55 engagements and the section of being threaded 61 break away from threaded connection holes 62 after worm shaft 54 moves along its axis.All the other all with embodiment 1 roughly the same, do not do and give unnecessary details.

When the section of being threaded 61 connects with threaded connection hole 62, it is moved along screw thread.In case when the section of being threaded 61 of worm shaft 54 did not connect with threaded connection hole 62, worm screw 53 and worm gear 55 engagements made that driving worm gear 55 by worm screw 53 when worm shaft 54 rotates rotates.

Specific embodiment described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used sensor 12, compression block 12a, resistance strain gage 12b, sensor to stop up terms such as 12c, groove 12d, wire guide 12e, lead 12f, actuating unit 13, support 2, tape spool 3, casing 5, worm screw 53, worm shaft 54, worm shaft inner end surface 54a, worm gear 55, locations 57, pivoted housing 58, spring 59, the section of being threaded 61, threaded connection hole 62 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims (10)

1. belt-retracting device for tightener, on the support (2) of the tight device of strand, be provided with the tape spool (3) that can rotate, one end of tape spool (3) stretches out support (2), this device comprises the casing (5) that is connected in support (2) sidepiece and is located at the interior worm screw (53) of casing (5), worm shaft (54) and worm gear (55), worm gear (55) is connected in the external part of tape spool (3), worm screw (53) is placed in that worm shaft (54) is gone up and both are fixed together, worm shaft (54) is located at the sidepiece of worm gear (55) and can be axially moved in casing (5) along it, it is characterized in that, this device also comprises the sensor (12) that is arranged between casing (5) and the worm shaft inner end surface (54a), worm shaft inner end surface (54a) can lean and make sensor (12) to produce and the corresponding signal of bundling belt tensile force size with sensor (12) mutually after worm shaft (54) moves, described sensor (12) comprises the compression block (12a) of sheet, an end face of compression block (12a) is towards worm shaft inner end surface (54a), and the other end is provided with some well-distributed resistance strain gages (12b) towards casing (5) and at this end face.

2. belt-retracting device for tightener according to claim 1, it is characterized in that, be fixed with sensor on the described casing (5) and stop up (12c) and both by being threaded, the end face that compression block (12a) is provided with resistance strain gage (12b) stops up (12c) and stops up (12c) inner end surface with sensor towards sensor and contacts.

3. belt-retracting device for tightener according to claim 2 is characterized in that, described sensor stops up (12c) the inner and has groove (12d), and the resistance strain gage (12b) on the above-mentioned compression block (12a) is arranged in groove (12d).

4. belt-retracting device for tightener according to claim 3, it is characterized in that, described sensor stops up and has the wire guide (12e) that connects with groove (12d) on (12c), be connected with lead (12f) on the described resistance strain gage (12b), and above-mentioned lead (12f) passes wire guide (12e) and extends to outside the casing (5).

5. according to claim 1 or 2 or 3 or 4 described belt-retracting device for tightener, it is characterized in that, be provided with when worm shaft (54) rotates between described casing (5) and the worm screw (53) or between casing (5) and the worm shaft (54) and can drive the guide that worm shaft (54) moves along its axis.

6. belt-retracting device for tightener according to claim 5, it is characterized in that, described guide is inboard and can be embedded in locations (57) in worm screw (53) wrom tooth, worm screw (53) and worm gear (55) engagement and worm screw (53) disengaging locations (57) when worm shaft (54) moves along its axis after for being connected in casing (5).

7. belt-retracting device for tightener according to claim 5, it is characterized in that, described guide is for being located at the section of being threaded (61) on the worm shaft (54) and being located at threaded connection hole (62) on the casing (5), and section of being threaded (61) and threaded connection hole (62) energy thread connection, worm screw (53) meshes with worm gear (55) and the section of being threaded (61) disengaging threaded connection hole (62) after worm shaft (54) moves along its axis.

8. belt-retracting device for tightener according to claim 6, it is characterized in that, the outer end of described worm shaft (54) is stretched out casing (5) and is provided with pivoted housing (58) in worm shaft (54) outer end, described pivoted housing (58) is circumferentially fixing with worm shaft (54), and pivoted housing (58) is axially fixed in casing (5) outside.

9. belt-retracting device for tightener according to claim 8, it is characterized in that, be provided with spring (59) between described pivoted housing (58) and the worm shaft (54), when worm shaft (54) worm screw (53) after move its outer end separates with worm gear (55) and the two ends of spring (59) act on respectively on worm shaft (54) and the pivoted housing (58).

10. belt-retracting device for tightener according to claim 9, it is characterized in that, described casing (5) is provided with actuating unit (13), described actuating unit (13) links by speed reduction gearing and pivoted housing (58) and can drive pivoted housing (58) and rotates, described actuating unit (13) is electrical motor or air motor, described speed reduction gearing is a reducing gearbox, and this reducing gearbox comprises gear case and is arranged on several interior intermeshing reducing gear of gear case.

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