CN212638511U

CN212638511U - Tensioning belt with tightening device

Info

Publication number: CN212638511U
Application number: CN202020986412.8U
Authority: CN
Inventors: 童建军
Original assignee: Jiande City Dayang Family Expenses Facility Co ltd
Current assignee: Jiande City Dayang Family Expenses Facility Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-03-02
Anticipated expiration: 2030-06-02

Abstract

The utility model belongs to the technical field of straining device, concretely relates to straining belt with tightening means. Bind the not good not enough of effect to current taut area, the utility model discloses a following technical scheme: a tightening strap having a tightening device, the automatically stowable tightening strap comprising: a receiving barrel comprising a barrel body; the outer end of the binding band extends out of the barrel body, and the binding band can be automatically stored; the binding end hook is connected with the end part of the movable end of the binding band; the tightening belt is connected with the storage barrel; a tightening device connected to the tightening belt and capable of tightening the tightening belt; and the tightening end hook is connected with the tightening device. The utility model discloses a beneficial result of taut area is: after the binding end hook at the binding band is in place, the tightening band can be tightened by operating the tightening device, so that the binding band is tightened, and the binding effect is improved; the tightening device is not arranged at the position of the binding band, so that the binding band is easier to operate.

Description

Tensioning belt with tightening device

Technical Field

The utility model belongs to the technical field of straining device, concretely relates to straining belt with tightening means.

Background

Tightening straps are often used during the transportation, movement, shipment or storage of goods. The tightening belt has a fixing function, is safe and reliable, is simple and convenient to operate, and protects objects from being damaged.

However, the conventional tightening strap does not have a tightening device, cannot be tightened after the drawable binding band is fixed, and is poor in binding effect. Alternatively, there is room for improvement in the existing tightening device structures for tightening straps.

In addition, when being applied to the binding of objects such as the case in the vapour car trunk (vapour car trunk respectively has one to be used for the cyclic annular piece of hook about generally), because the stiff end of current taut band all only has a hook (two hooks in whole taut band) with the strap end, consequently can only treat to tie up the object and carry out the one side ligature, the ligature probably is firm inadequately, and it is not good to tie up the effect.

In addition, there is room for improvement in the structure of the spool that houses the binding band.

Disclosure of Invention

The utility model discloses bind the not good not enough of effect to current taut band, provide a taut band with tightening means, it is taut after the bandage locking to the effect is binded in the promotion.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a tightening strap having a tightening device, the automatically stowable tightening strap comprising:

a receiving barrel comprising a barrel body;

the outer end of the binding band extends out of the barrel body, and the binding band can be automatically stored;

the binding end hook is connected with the end part of the outer end of the binding band;

the tightening belt is connected with the storage barrel;

a tightening device connected to the tightening belt and capable of tightening the tightening belt;

and the tightening end hook is connected with the tightening device.

The binding band of the tensioning belt of the utility model can be automatically stored in the cylinder body, so that the use is more convenient; after the binding end hook at the binding band is in place, the tightening band can be tightened by operating the tightening device, so that the binding band is tightened, and the binding effect is improved. The tightening means that the distance between the tightening end hook and the barrel is shorter, namely the tightening end hook is closer to the barrel.

As an improvement, the tightening device comprises:

the first connecting frame is connected with the tightening end hook;

the second connecting frame can rotate relative to the first connecting frame;

the connecting shaft is respectively connected with the first connecting frame and the second connecting frame in a rotating mode, and the tightening belt is connected with the connecting shaft;

the ratchet piece can rotate along with the connecting shaft;

the first movable pawl is movably arranged on the first connecting frame;

the second movable pawl is movably arranged on the second connecting frame;

when the second movable pawl abuts against the ratchet piece and the second connecting frame rotates towards the containing barrel relative to the first connecting frame, the tightening belt is wound on the connecting shaft and tightened, and the first movable pawl abuts against the ratchet piece and the second connecting frame.

As an improvement, the first connecting frame is provided with two parallel slotted plates, the slotted plates are provided with claw grooves for the first movable pawls to move, and the first movable pawls are acted with springs.

As an improvement, the second connecting frame is provided with two parallel slotted plates, the slotted plates are provided with claw grooves for the second movable pawls to move, and the second movable pawls are acted with springs.

As an improvement, the connecting shaft comprises two connecting blocks, and the ratchet wheel sheet is provided with an anti-rotation hole matched with the ratchet wheel sheet.

As an improvement, the fluting board of second link is located the fluting board outside of first link, the ratchet piece is located between first link and the second link, the second link outside is equipped with the ring, the connecting block is located the second link outside portion and sets up the anticreep hole, be equipped with the anticreep silk in the anticreep hole.

As an improvement, the cartridge further comprises:

the bracket is arranged in the cylinder and fixedly connected with the cylinder;

the rotating frame can rotate relative to the bracket, and the binding band is wound on the rotating frame;

the rotating shaft is arranged in the rotating frame and rotates integrally with the rotating frame, and the inner end of the binding band is fixedly connected with the rotating shaft;

a reset piece connected with the rotating shaft and used for automatically receiving the binding belt;

the ratchet assembly is used for switching the rotating shaft between a locking state and an active state.

The rotating shaft can not rotate when being in a locking state, and meanwhile, the binding belt can not be pulled out. When the rotating shaft is in a movable state, the rotating shaft can rotate, and the binding band can be pulled out under the action of external force. The reset piece always provides acting force for accommodating the binding belt.

As an improvement, the ratchet wheel assembly comprises a ratchet wheel rotating along with the rotating shaft, a pawl matched with the ratchet wheel, an elastic piece acting on the pawl to enable the pawl to be in a locking position, and an operating piece enabling the pawl to be switched between the locking position and an active position. When the pawl is in the locking position, the pawl limits the rotation of the ratchet wheel; when the pawl is in the active position, the ratchet wheel is rotatable. By operating the operating element, the pawl can be switched between the locking position and the active position.

As an improvement, the bracket is provided with a first circular plate, a second circular plate and a U-shaped plate which connects the first circular plate and the second circular plate in parallel, the bracket also comprises an opening plate which is positioned at the inner side of the second circular plate and is adjacent to the second circular plate, the second circular plate and the opening plate are provided with movable grooves for the pawls to pass through and limit the pawls, and the opening plate is provided with a notch for the revolving rack to be placed in.

As an improvement, the rotating frame comprises a first inner circular plate, a second inner circular plate and a notch circular tube, the first inner circular plate and the second inner circular plate are parallel to each other, the outer ring of the second inner circular plate is provided with a tooth part and forms the ratchet wheel, the rotating shaft is located in the notch circular tube, the inner end of the binding band is wound on the rotating shaft, and the end part of the inner end of the binding band is also provided with an anti-falling rod.

As an improvement, the cylinder body is provided with a cylinder part and a positioning part, the positioning part is provided with a positioning hole, the U-shaped plate of the bracket is provided with a positioning hole, and the cylinder body and the bracket are fixedly connected through a rivet.

As an improvement, the elastic piece is formed by processing a thin steel wire, a through hole is formed in the pawl, one end of the elastic piece is wound on the pawl, the other end of the elastic piece is connected with the support, and a crack is formed in part of a second circular plate of the support to install the elastic piece.

As a modification, the operating member rotates about a rotation shaft, the operating member has an abutting portion, when the abutting portion abuts against the pawl, the pawl is in an active position, and the ratchet wheel is rotatable; when the abutting part does not abut against the pawl, the pawl is in a locking position under the action of the reset piece, and the ratchet wheel cannot rotate.

As a modification, the operating member has an annular groove in which a conical coil spring is disposed; the barrel is provided with a movable groove for moving the operating part, and the movable groove limits the displacement of the operating part.

As an improvement, the reset piece is a spring steel coil, one end of the spring steel coil is connected with the rotating shaft, an embedded groove is formed in the end, connected with the spring steel coil, of the rotating shaft, and a steel coil cover is fixedly connected to the outer side of the first circular plate of the rotating frame; and the second inner circular plate of the rotating frame is provided with an anti-rotating hole, and the rotating shaft is provided with an anti-rotating plane matched with the anti-rotating hole.

As an improvement, the containing barrel further comprises a safety recovery structure, a pressing piece is arranged at one end, located on the operating piece, of the barrel body of the containing barrel, the outer end of the pressing piece extends out of the barrel body, and the inner end of the pressing piece abuts against a second inner circular plate of the rotating frame. In the recovery process, friction force is generated between the pressing piece and the second inner circular plate by pressing the pressing piece, so that the recovery speed of the binding band is adjusted. The pressing piece forms the safe recovery structure.

The utility model discloses a beneficial result of taut area is: the binding band can be automatically stored in the cylinder body, so that the use is more convenient; after the binding end hook at the binding band is in place, the tightening band can be tightened by operating the tightening device, so that the binding band is tightened, and the binding effect is improved; the tightening device is not arranged at the position of the binding band, so that the binding band is easier to operate.

Drawings

Fig. 1 is a schematic structural view of a tension band according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a tightening device of a tightening strap according to a first embodiment of the present invention.

Fig. 3 is an exploded view of a tightening device for a tension band according to a first embodiment of the present invention.

Fig. 4 is a schematic structural view of a component of the tension band according to the first embodiment of the present invention, which is embedded in the tube.

Fig. 5 and 6 are schematic structural views of a bracket for tightening a strap according to a first embodiment of the present invention.

Fig. 7 is a schematic structural view of a pawl of a tension band according to a first embodiment of the present invention.

Fig. 8 is a schematic structural view of a rotating frame, a rotating shaft and an operating member of a tightening belt according to a first embodiment of the present invention.

Fig. 9 is a schematic structural view of a tension band rotating stand according to a first embodiment of the present invention.

Fig. 10 is a schematic structural view of a rotating shaft of a tension band according to a first embodiment of the present invention.

Fig. 11 is a schematic structural view of an operating member for a tension band according to a first embodiment of the present invention.

Fig. 12 is a schematic structural view of a reset structure of a strap for tightening a belt according to a first embodiment of the present invention.

Fig. 13 is a schematic structural view of an inner end of a strap retaining structure of a tension band according to a first embodiment of the present invention.

Fig. 14 is a schematic structural view of a tension band pressing member according to a second embodiment of the present invention.

Fig. 15 is a schematic structural view of a tension band according to the second embodiment of the present invention.

In the figure, 01, a storage cylinder; 1. a barrel; 2. a support; 21. a first circular plate; 22. a second circular plate; 23. a U-shaped plate; 24. an opening plate; 25. a movable groove; 26. performing crack filling; 3. rotating the frame; 31. a first inner circular plate; 32. a second inner circular plate; 33. a notched circular tube; 34. a tooth portion; 35. an anti-rotation hole; 4. a rotating shaft; 41. caulking grooves; 42. an anti-rotation plane; 5. a reset member; 6. a pawl; 61. a stopping part; 62. a connecting portion; 7. an elastic member; 8. an operating member; 81. an abutting portion; 82. an annular groove; 9. covering the steel coil; 10. an anti-drop rod; p, a pressing piece, 02 and a tightening end hook; 03. binding bands; 04. a binding end is hooked; 05. tightening the belt; 06. a tightening device; 11. a first connecting frame; 12. a second link frame; 13. a connecting shaft; 14. a ratchet plate; 15. a first movable pawl; 16. a second movable pawl.

Detailed Description

The technical solutions of the embodiments of the present invention will be explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and are not all embodiments. Other embodiments obtained by persons skilled in the art without any inventive work based on the embodiments in the embodiment belong to the protection scope of the invention.

Referring to fig. 1 to 15, a tightening strap with a tightening device, the automatically received tightening strap comprising:

a receiving barrel comprising a barrel body;

the tightening belt is connected with the storage barrel;

and the tightening end hook is connected with the tightening device.

The binding band of the tensioning belt of the utility model can be automatically stored in the cylinder body, so that the use is more convenient; after the binding end hook at the binding band is in place, the tightening band can be tightened by operating the tightening device, so that the binding band is tightened, and the binding effect is improved.

Example one

Referring to fig. 1 to 13, a tension strap with a tightening device 06 according to a first embodiment of the present invention, the automatically-stored tension strap includes:

a receiving barrel comprising a barrel body;

the tightening belt 05, the tightening belt 05 is connected with the storage barrel;

a tightening device 06, said tightening device 06 being connected to the tightening strap 05 and being able to tighten the tightening strap 05;

a tightening end hook, which is connected with the tightening device 06.

As a refinement, the tightening device 06 comprises:

the first connecting frame 11 is connected with the tightening end hook;

a second link frame 12, the second link frame 12 being rotatable with respect to the first link frame 11;

the connecting shaft 13 penetrates through the first connecting frame 11 and the second connecting frame 12, the connecting shaft 13 is respectively connected with the first connecting frame 11 and the second connecting frame 12 in a rotating mode, and the tightening belt 05 is connected with the connecting shaft 13;

the ratchet piece 14, the said ratchet piece 14 can rotate with connecting axle 13;

the first movable pawl 15 is movably arranged on the first connecting frame 11;

the second movable pawl 16 is movably arranged on the second connecting frame 12;

when the second movable pawl 16 abuts against the ratchet piece 14 and the second connecting frame 12 rotates relative to the first connecting frame 11 toward the storage barrel, the tightening belt 05 is wound on the connecting shaft 13 and tightened, and the first movable pawl 15 abuts against the ratchet piece 14 and the second connecting frame 12.

As an improvement, the first connecting frame 11 has two parallel slotted plates, the slotted plates are provided with claw grooves for moving the first movable pawls 15, and the first movable pawls 15 are acted with springs.

As a modification, the second connecting frame 12 has two parallel slotted plates, the slotted plates are provided with claw grooves for moving the second movable pawls 16, and the second movable pawls 16 are acted with springs.

As an improvement, the connecting shaft 13 comprises two connecting blocks, and the ratchet piece 14 is provided with an anti-rotation hole matched with the ratchet piece.

As an improvement, the fluting board of second link 12 is located the fluting board outside of first link 11, ratchet piece 14 is located between first link 11 and the second link 12, the second link 12 outside is equipped with the ring, the connecting block is located the outside portion of second link 12 and offers the anticreep hole, be equipped with the anticreep silk in the anticreep hole.

The utility model discloses operating principle when tightening up of tightening means 06 of embodiment one is: when the connecting shaft 13 needs to be tightened, the second connecting frame 12 is operated, the second movable pawl 16 abuts against the ratchet piece 14, the ratchet piece 14 pushes the first movable pawl 15, the spring on the first movable pawl 15 is compressed, the second connecting frame 12, the second movable pawl 16, the ratchet piece 14 and the connecting shaft 13 rotate towards the first direction of the barrel as a whole, and in the rotating process, the tightening belt 05 is wound on the connecting shaft 13 and tightened; after the second connecting frame 12, the second movable pawl 16, the ratchet piece 14 and the connecting shaft 13 are integrally rotated for a certain angle along the first direction, the second connecting frame 12 is reversely operated, because the ratchet piece 14 abuts against the first movable pawl 15, the second connecting frame 12 and the connecting shaft 13 are integrally rotated towards the second direction far away from the barrel body, and the ratchet piece 14 does not rotate; after such several operations, the tighter the tightening strap 05 is tightened.

The utility model discloses operating principle when tightening means 06 loosens is: when the binding needs to be released, the second movable pawl 16 is pressed, the spring on the second movable pawl 16 is compressed, the second movable frame is operated to rotate towards the first direction of the barrel body, and only the second movable frame and the second movable pawl 16 rotate because the first movable pawl 15 abuts against the ratchet piece 14; after the second movable frame and the second movable pawl 16 rotate for a certain angle along the first direction, the first movable pawl 15 is pressed, the spring on the first movable pawl 15 is compressed, the second movable frame is operated to rotate towards the second direction far away from the cylinder body at the moment, and the second connecting frame 12, the second movable pawl 16, the ratchet piece 14 and the connecting shaft 13 rotate towards the second direction far away from the cylinder body as a whole; after such several operations, the more loose the tightening strap 05 is.

As a modification, the cartridge 01 further includes:

the bracket 2 is arranged in the cylinder body 1 and fixedly connected with the cylinder body 1;

the rotating frame 3 can rotate relative to the bracket 2, and the binding band 03 is wound on the rotating frame 3;

the rotating shaft 4 is arranged in the rotating frame 3 and rotates integrally with the rotating frame 3, and the inner end of the binding band 03 is fixedly connected with the rotating shaft 4;

a reset piece 5 connected with the rotating shaft 4 and used for automatically receiving the binding band 03;

and a ratchet assembly for switching the rotating shaft 4 between a locking state and an active state.

The rotating shaft 4 cannot rotate when in a locked state, and the binding band 03 cannot be pulled out. When the rotating shaft 4 is in the movable state, the rotating shaft 4 can rotate, and the binding band 03 can be pulled out under the action of external force. The restoring member 5 always provides a force to store the binding band 03.

As a modification, the ratchet assembly includes a ratchet wheel rotating with the rotating shaft 4, a pawl 6 engaged with the ratchet wheel, an elastic member 7 acting on the pawl 6 to place the pawl 6 in a locking position, and an operating member 8 switching the pawl 6 between the locking position and an active position. When the pawl 6 is in the locking position, the pawl 6 limits the rotation of the ratchet wheel; when the pawl 6 is in the active position, the ratchet wheel is rotatable. By operating the operating element 8, the pawl 6 can be switched between the locking position and the active position.

As an improvement, the bracket 2 has two parallel first circular plates 21, second circular plates 22 and a U-shaped plate 23 connecting the first circular plates 21 and the second circular plates 22, the bracket 2 further includes an opening plate 24 located inside the second circular plate 22 and adjacent to the second circular plate 22, the second circular plate 22 and the opening plate 24 are provided with movable grooves 25 for the pawls 6 to pass through and limit the pawls 6, and the opening plate 24 is provided with a notch for the revolving rack 3 to be inserted.

As a modification, the rotating frame 3 includes two parallel first inner circular plates 31, second inner circular plates 32, and a notched circular tube 33 connecting the first inner circular plates 31 and the second inner circular plates 32, the outer ring of the second inner circular plate 32 has teeth 34 and forms the ratchet, the rotating shaft 4 is located in the notched circular tube 33, the inner end of the binding band 03 is wound around the rotating shaft 4, and the end of the inner end of the binding band 03 is further provided with the anti-falling rod 10.

As an improvement, the cylinder 1 is provided with a cylinder part and a positioning part, the positioning part is provided with a positioning hole, the U-shaped plate 23 of the bracket 2 is provided with a positioning hole, and the cylinder 1 and the bracket 2 are fixedly connected through a rivet.

As an improvement, the elastic member 7 is formed by processing a thin steel wire, a through hole is formed in the pawl 6, one end of the elastic member 7 is wound around the pawl 6, the other end of the elastic member is connected with the bracket 2, and a crack 26 is formed in part of the second circular plate 22 of the bracket 2 to mount the elastic member 7. The elastic piece 7 is formed by processing a thin steel wire, and compared with a torsional spring, the structure size is simpler.

The pawl 6 is provided with a stopping part 61 and a connecting part 62, an obtuse angle is formed between the stopping part 61 and the connecting part 62, and a through hole for installing the elastic piece 7 is formed in the connecting part 62. The connecting portion 62 is larger in size than the stopper portion 61 in the axial direction of the rotary shaft 4. In the locking position, the pawl 6 is acted by the elastic piece 7 to prevent the ratchet wheel from rotating; the abutting portion 61 of the pawl 6 is switched from the lock position to the active position by an urging force from the abutting portion 81 of the operating element 8, and the pawl 6 cannot prevent the ratchet from rotating in the active position.

The movable groove 25 of the second circular plate 22 is different from the movable groove 25 of the split plate 24, the stop portion 61 and the connecting portion 62 need to be inserted into the movable groove 25 of the second circular plate 22, and only the connecting portion 62 can be inserted into the movable groove 25 of the split plate. The second circular plate 22 and the movable groove 25 of the aperture plate 24 each have a convex portion, and when the contact portion 81 of the operating element 8 generates a biasing force against the abutting portion 61 of the pawl 6, the entire pawl 6 rotates about the convex portion as a fulcrum, and is switched from the lock position to the movable position.

As a modification, the operating member 8 rotates about the rotating shaft 4, the operating member 8 has an abutting portion 81, when the abutting portion 81 abuts against the pawl 6, the pawl 6 is in the active position, and the ratchet wheel is rotatable; when the abutment 81 does not abut against the pawl 6, the pawl 6 is in the locking position by the reset member 5, and the ratchet wheel is not rotatable.

As a modification, the side of the operating member 8 remote from the second circular plate 22 of the bracket 2 has an annular groove 82, and a conical coil spring is disposed in the annular groove 82. One side of the operating part 8 close to the second circular plate 22 of the bracket 2 is provided with a positioning groove, and the inner side of the second circular plate 22 of the bracket 2 is also provided with a positioning ring.

As an improvement, the cylinder 1 is provided with a movable groove 25 for moving the operating part 8, and the movable groove 25 limits the displacement of the operating part 8.

As an improvement, the reset piece 5 is a spring steel coil, one end of the spring steel coil is connected with the rotating shaft 4, an embedded groove 41 is formed at the end of the rotating shaft 4 connected with the spring steel coil, and a steel coil cover 9 is fixedly connected to the outer side of the first circular plate 21 of the rotating frame 3; the second inner circular plate 32 of the rotating frame 3 is provided with an anti-rotation hole 35, and the rotating shaft 4 is provided with an anti-rotation plane 42 matched with the anti-rotation hole 35.

In other embodiments, a second hook can be arranged outside the bandage, and the bandage penetrates through the second hook to bind the plurality of surfaces.

The utility model discloses tensioning belt's beneficial result is: the binding band 03 can be automatically stored in the cylinder body 1, so that the use is more convenient; after the binding end hook at the binding band 03 is in place, the tightening band 05 can be tightened by operating the tightening device 06, so that the tightening is tighter, and the binding effect is improved; the spring steel coil is used as the reset piece 5, and the reset force of the binding band 03 is relatively balanced; the tightening can be realized by rotating the second connecting frame 12 in the forward and reverse directions, and the operation is easy.

Example two

The difference between the second embodiment and the first embodiment is that the second embodiment also has a safe recycling structure.

Referring to fig. 14 and 15, in the present embodiment, the storage tube 01 further includes a safety recovery structure, and the safety recovery structure prevents the recovery speed of the binding band 03 from being too high.

In this embodiment, the barrel 1 of the storage barrel 01 is provided with a pressing member P at one end of the operating member 8, the outer end of the pressing member P extends out of the barrel 1, and the inner end of the pressing member P abuts against the second inner circular plate 32 of the rotating frame 3. During the recovery process, the pressing piece P is pressed, so that a frictional force is generated between the pressing piece P and the second inner circular plate 32, thereby adjusting the recovery speed of the band 03. The pressing piece P forms the safety recovery structure.

In this embodiment, the pressing member P is a single piece, and has a substantially convex shape, the small diameter section of the pressing member P extends out of the cylinder 1, and the large diameter section abuts against the second inner circular plate 32, so as to prevent the pressing member P from falling out. The second circular plate 22 of the bracket 2 is provided with a notch for the pressing piece P to pass through, and the notch can also be matched with the pressing piece P to guide the pressing piece P. The outer end of the pressing piece P is semicircular. The pressing member P may be a hard plastic member or a rubber member having a certain elasticity.

While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto but is intended to cover various modifications and changes, including but not limited to the details shown in the drawings and described in the foregoing detailed description. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the following claims.

Claims

1. A tension strap having a tightening mechanism, characterized in that: the tension strap with the tightening device (06) comprises:

a receiving cylinder (01), the receiving cylinder (01) comprising a cylinder body (1);

the outer end of the binding band (03) extends out of the barrel body (1), and the binding band (03) can be automatically stored;

the binding end hook (04) is connected with the end part of the outer end of the binding band (03);

the tightening belt (05), the tightening belt (05) is connected with the storage barrel (01);

a tightening device (06), which tightening device (06) is connected to the tightening strap (05) and can tighten the tightening strap (05);

a tightening end hook (02), wherein the tightening end hook (02) is connected with a tightening device (06).

2. The tightening strap with tightening device of claim 1, wherein: the tightening device (06) comprises:

the first connecting frame (11), the first connecting frame (11) is connected with the tightening end hook (02);

the second connecting frame (12), the second connecting frame (12) can rotate relative to the first connecting frame (11);

the connecting shaft (13), the connecting shaft (13) is respectively connected with the first connecting frame (11) and the second connecting frame (12) in a rotating mode, and the tightening belt (05) is connected with the connecting shaft (13);

the ratchet piece (14), the said ratchet piece (14) can rotate with connecting axle (13);

the first movable pawl (15), the first movable pawl (15) is movably arranged on the first connecting frame (11);

the second movable pawl (16), the said second movable pawl (16) is movably set in the second link span (12);

when the second movable pawl (16) abuts against the ratchet piece (14) and the second connecting frame (12) rotates towards the storage barrel (01) relative to the first connecting frame (11), the tightening belt (05) is wound on the connecting shaft (13) and tightened.

3. The tightening strap with tightening device according to claim 2, characterized in that: the first connecting frame (11) is provided with two parallel slotted plates, the slotted plates are provided with claw grooves for moving the first movable pawls (15), and springs act on the first movable pawls (15); the second connecting frame (12) is provided with two parallel slotted plates, the slotted plates are provided with claw grooves for the second movable pawls (16) to move, and springs act on the second movable pawls (16).

4. The tightening strap with tightening device according to claim 2, characterized in that: the connecting shaft (13) comprises two connecting blocks, and the ratchet plate (14) is provided with an anti-rotation hole matched with the ratchet plate.

5. The tightening strap with tightening device of claim 4, wherein: the grooving plate of second link (12) is located the grooving plate outside of first link (11), ratchet piece (14) are located between first link (11) and second link (12), the second link (12) outside is equipped with the ring, the connecting block is located second link (12) outside portion and offers the anticreep hole, be equipped with the anticreep silk in the anticreep hole.

6. The tightening strap with tightening device according to any one of claims 1 to 5, wherein: the cartridge (01) further comprises:

the bracket (2) is arranged in the cylinder body (1) and fixedly connected with the cylinder body (1);

the rotating frame (3) can rotate relative to the bracket (2), and the binding band (03) is wound on the rotating frame (3);

the rotating shaft (4) is arranged in the rotating frame (3) and rotates integrally with the rotating frame (3), and the inner end of the binding band (03) is fixedly connected with the rotating shaft (4);

a reset piece (5) which is connected with the rotating shaft (4) and is used for automatically receiving the binding belt (03);

a ratchet assembly for switching the rotary shaft (4) between a locked state and an active state.

7. The tightening strap with tightening device of claim 6, wherein: the ratchet wheel assembly comprises a ratchet wheel rotating along with the rotating shaft (4), a pawl (6) matched with the ratchet wheel, an elastic piece (7) acting on the pawl (6) to enable the pawl (6) to be in a locking position, and an operating piece (8) enabling the pawl (6) to be switched between the locking position and an active position.

8. The tightening strap with tightening device of claim 7, wherein: the support (2) is provided with a first circular plate (21), a second circular plate (22) and a U-shaped plate (23) for connecting the first circular plate (21) and the second circular plate (22), the support (2) further comprises an opening plate (24) which is located on the inner side of the second circular plate (22) and is adjacent to the second circular plate (22), a movable groove (25) for the pawl (6) to penetrate through and limit the pawl (6) is formed in the second circular plate (22) and the opening plate (24), and a notch for the rotary frame (3) to be placed in is formed in the opening plate (24).

9. The tension strap with tightening device of claim 8, wherein: the rotary frame (3) comprises a first inner circular plate (31), a second inner circular plate (32) and a notch circular tube (33) for connecting the first inner circular plate (31) and the second inner circular plate (32), the outer ring of the second inner circular plate (32) is provided with a tooth part (34) and forms the ratchet wheel, the rotating shaft (4) is located in the notch circular tube (33), the inner end of the binding band (03) is wound on the rotating shaft (4), and the inner end of the binding band (03) is further provided with an anti-falling rod (10).

10. The tightening strap with tightening device of claim 6, wherein: the storage barrel (01) further comprises a safety recovery structure, the safety recovery structure comprises a pressing piece (P), the inner end of the pressing piece (P) abuts against the rotating frame (3), and the outer end of the pressing piece (P) is exposed out of the barrel body (1).