CN111578015A

CN111578015A - Locking worm drive formula clamp

Info

Publication number: CN111578015A
Application number: CN202010318543.3A
Authority: CN
Inventors: 张其锋; 曹寅; 黄吕斌
Original assignee: Yuyao Hengwei Clamp Co ltd
Current assignee: Yuyao Hengwei Clamp Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-08-25
Anticipated expiration: 2040-04-21
Also published as: CN111578015B

Abstract

The invention discloses a locking worm transmission type clamp, which solves the problem that the locking effect of the existing worm transmission type clamp is not ideal. The technical scheme is that the anti-loosening worm transmission type hoop comprises a hoop shell, a steel belt, a first worm and a second worm which are rotatably installed on the hoop shell and arranged in parallel, wherein the thread direction of the first worm is opposite to the thread direction of the second worm; the steel belt is provided with a first tooth groove matched with the first worm and a second tooth groove matched with the second worm; the first worm has a first gear portion; the second worm has a second gear part having the same number of teeth as the first gear part; hoop shell still install simultaneously with first gear part with the locking gear spare of second gear part meshing, locking worm drive formula clamp has reduced the probability that takes place not hard up after the locking of worm drive formula clamp.

Description

Locking worm drive formula clamp

Technical Field

The invention relates to a clamp, in particular to a worm transmission type clamp.

Background

The worm drive type clamp is a commonly used clamp type, and the tightness degree of the worm drive type clamp is adjusted through the matching of a worm and a tooth groove on a steel belt.

The utility model discloses an authorization notice number is CN 207421040U's china utility model discloses a locking worm drive formula clamp, including hoop shell, worm and steel band, the worm includes the worm pole head, the spiral section and connect in my joint section of doing thoroughly and between the spiral section, be provided with the spacing turn-ups that restriction worm circumference slided and offset with the joint section on the hoop shell, the straight line annular knurl has been arranged to the surface circumference of joint section, spacing turn-ups have the card go into in the straight line annular knurl and the spacing dogtooth that the restriction worm reversed, cooperation through spacing dogtooth and straight line annular knurl, thereby realize the locking purpose of above-mentioned worm drive formula clamp.

The above prior art solutions have the following drawbacks: above-mentioned locking worm drive formula clamp leads to spacing dogtooth and straight line annular knurl to take place wearing and tearing easily at the locking in-process, causes above-mentioned locking worm drive formula clamp locking effect after the locking not ideal, still takes place to become flexible easily.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the anti-loosening worm transmission type hoop, so that the probability of loosening after the worm transmission type hoop is locked is reduced.

The above object of the present invention is achieved by the following technical solutions:

a locking worm drive type hoop comprises a hoop shell, a steel belt, a first worm and a second worm which are rotatably installed on the hoop shell and arranged in parallel, wherein the thread direction of the first worm is opposite to the thread direction of the second worm; the steel belt is provided with a first tooth groove matched with the first worm and a second tooth groove matched with the second worm; the first worm has a first gear portion; the second worm has a second gear part having the same number of teeth as the first gear part; the hoop housing is further mounted with a locking gear member simultaneously engaged with the first gear portion and the second gear portion.

According to the invention, the first worm and the second worm with opposite thread directions are set, and the steel belt is provided with the first tooth groove matched with the first worm and the second tooth groove matched with the second worm respectively, so that the worm transmission type hoop can realize locking and loosening only when the rotation directions of the first worm and the second worm are opposite. This emergence is still through setting up locking gear spare, and the first gear portion of locking gear spare and first worm meshes simultaneously with the second gear portion of second worm for first worm and the unable relative back of the body of second worm are rotatory mutually, thereby realize the locking effect of above-mentioned worm drive formula clamp.

Worm drive clamps, among other things, are commonly used in connection with hose-over-hard tubing. When the hose is locked on the hard tube by the worm-drive type clamp, the rotation angles of the first worm and the second worm can be finely adjusted simultaneously, so that the locking gear part can be installed between the first gear part and the second gear part and simultaneously meshed with the first gear part and the second gear part.

The invention is further provided that the hoop shell is provided with a sliding seat for installing the locking gear piece, and the sliding seat is slidably installed on the hoop shell and is provided with a locking position and an unlocking position; when the sliding seat is in the locking position, the locking gear piece is meshed with the first gear part and the second gear part; when the sliding seat is in the unlocking position, the locking gear piece is separated from the position between the first gear part and the second gear part.

Through adopting above-mentioned technical scheme, the operator can be through the seat that slides on the hoop shell that slides for the seat that slides from the unblock position displacement to lock the position, makes locking gear spare lock with first gear part and second gear part simultaneously, realizes the locking of above-mentioned worm drive formula clamp. When locking/unlocking is needed, the sliding seat can slide from the locking position to the unlocking position, so that the locking gear piece is separated from the first gear part and the second gear part, and the first worm and the second worm rotate oppositely/oppositely at the same time, and the locking/unlocking of the worm transmission type hoop can be realized.

The invention is further provided that the hoop housing is further provided with a locking spring, one end of the locking spring abuts against the sliding seat, the other end of the locking spring abuts against the hoop housing, and the locking spring drives the sliding seat to always have a tendency of sliding from the unlocking position to the locking position.

Through adopting above-mentioned technical scheme, locking spring makes the seat that slides have all the time for the trend of sliding to the lock position from the unblock, has reduced the probability that the seat that slides to the unblock position from the lock position under the vibration environment to the locking effect of above-mentioned worm drive formula clamp has further been promoted.

The invention is further provided that the hoop shell is provided with a slide rail, the slide rail is provided with a limiting chute along the length direction of the slide rail, and one end of the limiting chute far away from the hoop shell is provided with a limiting end face; the sliding seat is provided with a first sliding groove matched with the sliding rail, and the sliding seat is also provided with a limiting bolt with the end part inserted into the limiting sliding groove; when the end part of the limiting bolt abuts against the limiting end face, the sliding seat is located at the locking position.

Through adopting above-mentioned technical scheme, the seat that slides through the cooperation of first spout and slide rail and installs on the hoop shell, and can pass through spacing bolt butt on the spacing terminal surface of spacing spout for the seat that slides can not drop from the hoop shell under locking spring's pressure.

The invention is further provided that the sliding seat is also provided with a locking guide piece; when the sliding seat is in the locking position, the locking guide is abutted against the first gear part and the second gear part so that the worm section of the first worm and the worm section of the second worm are pressed on the steel belt.

In the production of worm-drive clamps, it is unavoidable that there is a fitting clearance between the worm and the clamp housing at the present stage. When the worm drive formula clamp with the hose locking on the hard tube and under the environment of vibration, because there is fit clearance between worm and the hoop shell, the worm drive formula clamp will take place to become flexible.

The locking guide part utilizes a fit clearance between the worm and the hoop shell, when the sliding seat in the worm transmission type hoop is in a locking position, the locking guide part abuts against the bottoms of the first gear part of the first worm and the second gear part of the second worm, so that the worm section of the first worm and the worm section of the second worm are both inclined downwards, the worm section of the first worm and the worm section of the second worm are both pressed on the first tooth groove and the second tooth groove of the steel belt, meshing among the first worm, the second worm and the steel belt is realized, the probability of loosening of the worm transmission type hoop is further reduced, and the anti-loosening effect of the worm transmission type hoop is improved.

The present invention is further configured such that the locking guide has a guide groove into which the convex teeth of the first gear part and the convex teeth of the second gear part are fitted, the guide groove having a guide slope that is inclined downward in a direction away from the ferrule case.

By adopting the technical scheme, the locking guide part is provided with the guide groove for the convex teeth of the first gear part and the second gear part to be clamped into, so that the convex teeth of the first gear part and the convex teeth of the second gear part are abutted against the guide inclined plane, and the first worm and the second worm are inclined. The guide effect of the locking guide piece is ideal. Compared with the direct adoption of the mode that the guide inclined surfaces abut against the first gear part and the second gear part, the damage of the locking guide to the first gear part and the second gear part is smaller.

The invention is further arranged that the sliding seat is also provided with a first gear transmission mechanism, the first gear transmission mechanism comprises an even number of first transmission gears which are sequentially connected with the first gear part and the second gear part, and the transmission ratio of the first gear transmission mechanism is 1; when the sliding seat is in the locking position, the first gear transmission mechanism is disengaged from the first gear part and the second gear part; when the sliding seat is located at the unlocking position, the first gear transmission mechanism is in transmission connection with the first gear part and the second gear part.

By adopting the technical scheme, when the worm transmission type hoop needs to be unlocked, the sliding seat slides to the unlocking position, and the first gear transmission mechanism is connected between the first gear part and the second gear part, so that an operator only needs to rotate the first worm or the second worm, and the rest of the worms can move oppositely/reversely, and the operation of locking and unlocking the worm transmission type hoop is facilitated.

The invention is further provided that the hoop shell can be also detachably provided with an unlocking seat, the unlocking seat is provided with a second sliding chute matched with the sliding rail, the top of the unlocking seat is also provided with a second hole communicated with the second sliding chute, a ball head spring plunger is arranged in the second hole, and the ball head spring plunger is positioned in the second sliding chute; when the unlocking seat is arranged on the sliding rail and the plunger ball is abutted against the limiting end face, the sliding seat is in an unlocking position.

Through adopting above-mentioned technical scheme, when needs lock or the unblock to above-mentioned worm transmission formula clamp, install the unblock seat on the slide rail of hoop shell to the seat that will slide removes towards the direction of hoop shell, when the plunger ball joint of unblock seat at the second spout and with spacing terminal surface butt, the seat that slides is in the unblock position, first gear drive connects in first gear portion and second gear portion, make only need rotate first worm or second worm, can accomplish the unblock or the locking of above-mentioned worm transmission formula clamp. The setting of above-mentioned unblock seat conveniently switches the seat that slides to unblock position to the operation of conveniently locking or unblock worm transmission formula clamp.

The invention is further provided that the worm head of the first worm and the worm head of the second worm each have a worm rotation hole; the unlocking seat is provided with a first end face facing the sliding seat and a second end face back to the sliding seat; the unlocking seat is provided with a first through hole opposite to the worm head of the first worm and a second through hole opposite to the worm head of the second worm, unlocking heads are rotatably arranged in the first through hole and the second through hole of the unlocking seat respectively, the two unlocking heads are provided with unlocking lugs matched with the worm rotating hole of the first worm or the worm rotating hole of the second worm respectively, and an unlocking hole is arranged at one end back to the unlocking lugs; the two unlocking heads are in transmission connection through a second gear transmission mechanism with the transmission ratio of 1.

Through adopting above-mentioned technical scheme, set up second gear drive on the unblock seat for the moment of torsion on the first worm can be transmitted through first gear drive and second gear drive simultaneously, has reduced the load capacity that first gear drive bore, helps increasing the locking power of above-mentioned worm transmission formula clamp.

The invention is further arranged that the unlocking seat is arranged in the second end surface and is uniformly provided with radial convex lines along the circumferential direction of the first through hole, and the unlocking head is provided with an indicating arrow on the end surface provided with the worm rotating hole; when the indication arrow points to the convex lines, the convex teeth of the locking gear piece are opposite to the tooth grooves of the first gear part and the second gear part, so that the locking gear piece is meshed with the first gear part and the second gear part simultaneously when the sliding seat slides from the unlocking position to the locking position.

By adopting the technical scheme, when the indication arrow points to the convex line on the unlocking seat, namely the convex teeth of the locking gear part are just opposite to the tooth grooves of the first gear part and the second gear part, when the sliding seat slides to the locking position from the unlocking position, the locking gear part can be meshed with the first gear part and the second gear part, so that the situation that the sliding seat cannot normally slide to the locking position due to interference of the locking gear part, the first gear part and the second gear part in the process that the sliding seat slides to the locking position from the unlocking position is avoided.

In summary, the invention includes at least one of the following beneficial technical effects:

1. a locking worm drive type hoop comprises a hoop shell and a steel belt, wherein a first worm and a second worm are arranged on the hoop shell in parallel, the steel belt is provided with a first tooth groove and a second tooth groove, the first worm is provided with a first gear part, the second worm is provided with a second gear part, the hoop shell is further provided with a locking gear part meshed with the first gear part and the second gear part, and the locking gear part is meshed with the first gear part of the first worm and the second gear part of the second worm simultaneously so that the first worm and the second worm cannot rotate oppositely/oppositely and accordingly the locking effect of the worm drive type hoop is achieved;

2. the hoop shell is provided with a sliding seat in a sliding manner, and the hoop shell is also provided with a locking spring which enables the sliding seat to always have the tendency of sliding from an unlocking position to a locking position, so that the anti-loosening effect of the worm transmission type hoop is improved, and the switching between the locking state and the unlocking state of the worm transmission type hoop is facilitated;

3. when the sliding seat is positioned at the locking position, the locking guide piece abuts against the first gear part and the second gear part so that the worm sections of the first worm and the second worm are pressed on the tooth grooves of the steel belt, and therefore the locking capacity of the worm transmission type hoop is improved;

4. through setting up the unblock seat for when needs unblock/lock above-mentioned worm transmission formula clamp, install the unblock seat on the slide rail of hoop shell, make the seat that slides to the unblock position from the lock position, thereby made things convenient for rotatory first worm or second worm, realized the locking or the unblock of above-mentioned worm transmission formula clamp.

Drawings

FIG. 1 is a schematic structural view of example 1.

Fig. 2 is a schematic structural view of the first worm and the second worm in embodiment 1.

Fig. 3 is a schematic view showing the fitting of the upper band housing, the lower band plate, the first worm, and the second worm in embodiment 1.

Fig. 4 is a schematic structural view of the upper hoop casing and the lower hoop plate in an explosive state in example 1.

Fig. 5 is a schematic view of the bottom structure of the upper shell in example 1.

Fig. 6 is a schematic view showing the fitting of the ferrule housing and the slide holder in embodiment 1.

Fig. 7 is a schematic structural view of the locking seat in embodiment 1.

Fig. 8 is a schematic cross-sectional view of the sliding seat and the slide rail in embodiment 1.

Fig. 9 is an enlarged view at a in fig. 8.

Fig. 10 is a schematic view showing the engagement of the locking gear member and the sliding seat in an explosive state in embodiment 1.

Fig. 11 is a schematic structural view of the locking gear member and the locking guide in embodiment 1.

FIG. 12 is a schematic structural view of embodiment 2.

Fig. 13 is a schematic bottom structure view of the slide seat in embodiment 2.

Fig. 14 is a schematic view of the sliding seat and the first gear transmission mechanism in an explosion state in the embodiment 2.

FIG. 15 is a schematic structural view of example 3.

Fig. 16 is a schematic view showing the engagement between the unlocking seat and the slide rail in embodiment 3.

Fig. 17 is a schematic structural view of the unlocking receptacle in an exploded state in embodiment 3.

Fig. 18 is a schematic structural view of an unlocking head in embodiment 3.

Fig. 19 is a schematic structural view of an unlocking seat in embodiment 3.

In the figure: 1. a ferrule housing; 11. an upper hoop shell; 111. a clip sheet; 112. a first mounting portion; 1121. a first card hole; 1122. a first accommodating cavity; 113. a second mounting portion; 1131. a second card hole; 1132. a second accommodating cavity; 12. a lower hoop plate; 121. a clamping hole; 13. installing a channel; 2. a steel belt; 21. a fixed section; 22. an active segment; 23. a fixed end; 24. a movable end; 25. a first tooth slot; 26. a second tooth slot; 3. a first worm; 31. a first stopper; 32. a first worm section; 33. a first connection section; 34. a first worm head; 35. a first ring groove; 36. a first gear portion; 37. a worm rotation hole; 4. a second worm; 41. a second limiting head; 42. a second worm section; 43. a second connection section; 44. a second worm head; 45. a second ring groove; 46. a second gear portion; 5. a locking seat; 51. a first caulking groove; 52. a second caulking groove; 53. a slide rail; 531. a limiting chute; 532. a limiting end face; 54. a locking spring; 6. a sliding seat; 61. a first chute; 62. a limit bolt; 63. a lock gear member; 631. locking the bottom plate; 632. locking the half gear; 6321. locking the convex teeth; 64. a locking groove; 65. a locking guide; 651. a guide groove; 66. a first drive gear; 661. a drive shaft; 67. a containing groove; 671. mounting grooves; 672. a rotating tank; 673. mounting a plate; 7. an unlocking seat; 71. a second chute; 72. a ball spring plunger; 721. a plunger housing; 722. a plunger spring; 723. a plunger ball; 73. a first end face; 74. a second end face; 741. a relief pattern; 751. a first through hole; 752. a second through hole; 753. a limit convex ring; 76. an unlocking head; 761. unlocking the bump; 762. unlocking the hole; 763. a limiting ring groove; 764. a third gear portion; 765. an arrow is indicated; 77. a second transmission gear; 78. an upper housing; 79. a lower housing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

referring to fig. 1, the anti-loose worm drive type hoop comprises a hoop shell 1, a steel belt 2, a first worm 3 and a second worm 4. Wherein, the first worm 3 and the second worm 4 are rotatably mounted on the hoop shell 1 and are arranged in parallel.

Referring to fig. 1 and 2, the first worm 3 includes a first stopper 31, a first worm section 32, a first connecting section 33, and a first worm head 34. The first limiting head 31 is conical, and the outer diameter of the first limiting head 31 gradually decreases along the direction away from the first worm section 32; the first worm 3 is provided with first ring grooves 35 at two ends of the first worm section 32, and the first worm 3 is clamped and mounted on the hoop shell 1 through the first ring grooves 35; the first worm 3 is coaxially provided with a first gear part 36 on the first connecting section 33, and the outer diameter of the first gear part 36 is larger than that of the first worm head 34; the first worm head 34 is provided with a worm rotation hole 37 at an end portion away from the first gear portion 36, and the worm rotation hole 37 is a hexagonal hole.

The second worm 4 has a similar structure to the first worm 3, and includes a second stopper 41, a second worm segment 42, a second connecting segment 43, and a second worm head 44. The second limiting head 41 is also conical, and the outer diameter of the second limiting head 41 gradually decreases in the direction away from the second worm section 42; the second worm 4 is provided with second ring grooves 45 at two ends of the second worm section 42, and the second worm 4 is clamped and mounted on the hoop shell 1 through the second ring grooves 45; the helical direction of the second worm section 42 is opposite to the direction of rotation of the first worm section 32; the second worm 4 is coaxially provided with a second gear part 46 on the second connecting section 43, the structure of the second gear part 46 is consistent with that of the first gear part 36, and the outer diameter of the second gear part 46 is larger than that of the second worm head 44; the second worm head 44 is also provided with a worm rotation hole 37 at an end remote from the second gear part 46.

Referring to fig. 1, the hoop housing 1 includes an upper hoop housing 11 and a lower hoop plate 12.

Referring to fig. 3 and 4, the upper hoop housing 11 is provided at both sides of the bottom thereof with snap pieces 111, respectively, and the lower hoop plate 12 is provided with snap holes 121 for the snap pieces 111 to correspond one-to-one and for the snap pieces 111 to be inserted. When the upper hoop shell 11 and the lower hoop plate 12 are installed, the clamping piece 111 of the upper hoop shell 11 is inserted into the corresponding clamping hole 121, and the clamping piece 111 is bent to lock the lower hoop plate 12 at the bottom of the upper hoop shell 11 by the bent clamping piece 111, so that the upper hoop shell 11 and the lower hoop plate 12 are matched. When the upper and

lower hoop shells

11 and 12 are completely assembled, a mounting passage 13 is formed between the upper and

lower hoop shells

11 and 12.

Referring to fig. 3 to 5, the upper hoop housing 11 is provided with a first mounting portion 112 for rotatably mounting the first worm 3 and a second mounting portion 113 for rotatably mounting the second worm 4. The two ends of the first mounting portion 112 are respectively provided with a first clamping hole 1121 matched with the two first ring grooves 35 of the first worm 3 and a first accommodating cavity 1122 for accommodating the first worm section 32 of the first worm 3; the second mounting portion 113 has second locking holes 1131 respectively matched with the two second annular grooves 45 of the second worm 4 and a second receiving cavity 1132 for rotatably receiving the second worm section 42 of the second worm 4.

After the first worm 3 and the second worm 4 are both rotatably mounted on the hoop housing 1, the first extended section of the first worm 3 and the first worm head 34 are both located outside the hoop housing 1, the second extended section of the second worm 4 and the second worm head 44 are also both located outside the hoop housing 1, the first gear portion 36 and the second gear portion 46 are arranged in parallel, and the first worm head 34 and the second worm head 44 are arranged in parallel. Due to the fit clearance between the first locking hole 1121 and the first ring groove 35, and the fit clearance between the second locking hole 1131 and the second ring groove 45, the first worm 3 and the second worm 4 can also slightly swing on the hoop housing 1.

Referring to fig. 1, a steel strip 2 includes a fixed segment 21 and a movable segment 22. The steel belt 2 is provided with a first tooth groove 25 matched with the first worm 3 and a second tooth groove 26 matched with the second worm 4 at intervals along the length direction of the movable section 22. Wherein, the first tooth groove 25 and the second tooth groove 26 are symmetrically arranged left and right.

The end part of the fixed section 21 in the steel belt 2 is a fixed end 23, and the end part of the movable section 22 in the steel belt 2 is a movable end 24. The fixed end 23 of the steel belt 2 is fixed on the bottom surface of the lower hoop plate 12 by welding, and the movable end 24 of the steel belt 2 can be inserted from the other end of the installation channel 13 after being bent, so that the first tooth groove 25 and the second tooth groove 26 on the steel belt 2 are respectively matched with the first worm section 32 of the first worm 3 and the second worm section 42 of the second worm 4. At this moment, the first worm 3 and the second worm 4 are simultaneously rotated, so that the first worm 3 and the second worm 4 rotate oppositely or oppositely, and the tightening and loosening of the worm transmission type hoop can be realized.

Referring to fig. 1, 6 and 7, the hoop housing 1 further includes a locking seat 5 welded and fixed to the top of the upper hoop housing 11. The lock holder 5 has a first caulking groove 51 into which the first mounting portion 112 of the upper hoop housing 11 is fitted and a second caulking groove 52 into which the second mounting portion 113 is fitted.

Referring to fig. 6 and 7, the locking seat 5 is further provided with a slide rail 53 at a side of the upper hoop shell 11 where the first worm head 34 is provided, and the cross section of the slide rail 53 is circular and parallel to the axial direction of the first worm 3. The top surface of the slide rail 53 is provided with a limiting sliding groove 531 along the length direction thereof, and one end of the limiting sliding groove 531, which is far away from the hoop housing 1, is provided with a limiting end surface 532. In the present embodiment, the locking seat 5 is provided with two sliding rails 53, and the two sliding rails 53 are respectively located directly above the first worm 3 and directly above the second worm 4.

Referring to fig. 6, 8 and 9, the hoop housing 1 is further provided with a sliding seat 6 slidably mounted on the sliding rail 53. The sliding seat 6 has a first sliding slot 61 which is matched with the sliding rail 53. The top of the sliding seat 6 is further provided with a threaded hole communicated with the first sliding groove 61, a limiting bolt 62 is mounted in the threaded hole, and the end of the limiting bolt 62 is inserted into the limiting sliding groove 531.

Referring to fig. 6 and 10, a locking gear member 63 is further mounted on the slide seat 6. The locking gear member 63 includes a locking base plate 631 and a locking half gear 632. The lock half gear 632 is perpendicular to the lock base plate 631, and has lock teeth 6321 capable of meshing with the first gear part 36 and the second gear part 46. In this embodiment, the lock half gear 632 and the lock base plate 631 are integrally provided. The bottom surface of the sliding seat 6 is provided with a locking groove 64 for the locking bottom plate 631 to be inserted into, and the locking point is fixed in the locking groove 64 by a screw.

Referring to fig. 6 and 10, the slide seat 6 is further provided with a locking guide 65. The lock guide 65 is provided at the bottom of the lock half gear 632 and is arranged vertically symmetrically with the lock half gear 632. In the present embodiment, the lock guide 65 is provided integrally with the lock gear member 63.

Referring to fig. 6 and 11, the locking guide 65 has a guide groove 651 into which the convex teeth of the first gear part 36 and the convex teeth of the second gear part 46 are caught, and a bottom surface of the guide groove 651 is arranged to be inclined downward away from the hoop housing 1.

The sliding seat 6 slides along the sliding rail 53, and has a locking position and an unlocking position.

When the slide holder 6 is in the locked position, the end of the limit bolt 62 in the slide holder 6 abuts on the limit end surface 532 of the slide rail 53, the lock gear 63 simultaneously meshes with the first gear part 36 and the second gear part 46, and the convex teeth of the first gear part 36 and the second gear part 46 are engaged in the guide groove 651. Under the guiding action of the guide groove 651 in the locking guide 65, the first worm section 32 of the first worm 3 and the second worm section 42 of the second worm 4 are inclined downward such that the first worm section 32 and the second worm section 42 are engaged with the first tooth groove 25 and the second tooth groove 26 of the steel strip 2, respectively.

When the sliding seat 6 is in the unlocked position, the locking gear member 63 and the locking guide member 65 are both disengaged from between the first gear portion 36 and the second gear portion 46, so that the first worm 3 and the second worm 4 can rotate oppositely/reversely, and the worm-drive type clamp can be tightened or loosened.

Referring to fig. 6, the locking seat 5 is sleeved with a locking spring 54 at both of the two guide rails, one end of the locking spring 54 abuts against the end surface of the locking seat 5, and the other end abuts against the end surface of the sliding seat 6. The locking spring 54 forces the slide shoe 6 to always have a tendency to slide from the unlocked position to the locked position.

With reference to fig. 1-11, the locking worm drive clamp locks the hose to the wand as follows:

1. pushing the sliding seat 6 from the locking position to the movable position;

2. inserting the movable end 24 of the steel strip 2 from the installation channel 13 of the hoop housing 1, so that the first worm 3 and the second worm 4 are engaged with the first tooth slot 25 and the second tooth slot 26 of the steel strip 2 respectively;

3. simultaneously rotating the first worm 3 and the second worm 4 so that the steel belt 2 inserted from the mounting channel 13 gradually protrudes from the other end of the mounting channel 13 so that the steel belt 2 is gradually pressed against the hose;

4. after the steel belt 2 presses the hose onto the hard pipe, the rotation angles of the first worm 3 and the second worm 4 are finely adjusted, so that the locking gear member 63 and the locking guide member 65 can smoothly slide between the first gear portion 36 and the second gear portion 46;

5. when the shoe 6 is released, the shoe 6 is slid from the unlock position to the lock position by the lock spring 54, the lock gear member 63 simultaneously meshes with the first gear part 36 and the second gear part 46, and the convex teeth of the first gear part 36 and the second gear part 46 are caught in the guide groove 651 of the lock guide 65.

Example 2:

the anti-loosening worm drive type clamp in the embodiment is the same as the anti-loosening worm drive type clamp in the embodiment 1 except that the first gear drive mechanism is further arranged on the sliding seat 6.

Referring to fig. 12, 13 and 14, the sliding seat 6 is further provided with a first gear transmission mechanism, and the transmission ratio of the first gear transmission mechanism is 1. The first gear transmission comprises two first transmission gears 66 in driving connection. Each of the first transmission gears 66 has a transmission shaft 661 at both ends. In the present embodiment, the structure of the first transmission gear 66 coincides with the structure of the first gear portion 36 of the first worm 3.

The bottom of the sliding seat 6 is provided with a containing groove 67 for placing the first gear transmission mechanism. The containing groove 67 has all seted up mounting groove 671 in the both sides of slide rail 53 glide direction, and has seted up the rotatory groove 672 that supplies the transmission shaft 661 to rotate to place at the bottom of mounting groove 671. The sliding seat 6 is further provided with a mounting plate 673 which is matched with the mounting groove 671 and limits the rotating shaft in the rotating groove 672.

When the slide bearing 6 is in the locked position, the first gear transmission mechanism is disengaged from the first gear part 36 and the second gear part 46. When the sliding seat 6 is in the unlocking position, the two transmission gears of the first gear transmission mechanism are respectively meshed with the first gear part 36 and the second gear part 46, and at this time, the first worm 3 or the second worm 4 is rotated to control the other worm to rotate oppositely/oppositely, so that the loosening-proof worm transmission type hoop is tightened and loosened.

Example 3:

the anti-loosening worm-drive clamp of the present embodiment has the same structure as the anti-loosening worm-drive clamp of embodiment 2, except that an unlocking seat 7 is provided.

Referring to fig. 15 and 16, the unlocking seat 7 has a second sliding groove 71 engaged with the sliding rail 53. The top of the sliding seat 6 is provided with a second hole communicated with the second chute 71, and a ball spring plunger 72 is installed in the second hole in a threaded manner. Ball spring plunger 72 includes a plunger housing 721, a plunger spring 722, and a plunger ball 723. A hexagonal hole is provided at the rear end of the plunger housing 721 to facilitate adjustment of the position of the ball spring plunger 72 within the second hole. After the sliding seat 6 is slidably mounted on the slide rail 53 of the hoop housing 1, the locking spring 54 is compressed to make the sliding seat 6 slide toward the hoop housing 1, and when the plunger ball 723 of the ball-end spring plunger 72 abuts against the limiting end surface 532 of the slide rail 53, the sliding seat 6 is in the unlocking position.

Referring to fig. 15 and 17, the unlocking seat 7 has a first end surface 73 facing the slide seat 6 and a second end surface 74 facing away from the slide seat 6, and has a first through hole 751 facing the first worm head 34 of the first worm 3 and a second through hole 752 facing the second worm head 44 of the second worm 4. The unlocking head 76 is rotatably mounted on the unlocking seat 7 in both the first through hole 751 and the second through hole 752.

Referring to fig. 17 and 18, the unlocking head 76 has an unlocking protrusion 761 inserted into the worm rotation hole 37 of the first worm 3 or the worm rotation hole 37 of the second worm 4, and the unlocking head 76 is provided with an unlocking hole 762 at an end facing away from the unlocking protrusion 761. The unlocking hole 762 is also a regular hexagonal hole. In this embodiment, a limiting ring groove 763 is circumferentially formed in the middle of the unlocking head 76, and a limiting protruding ring 753 that is matched with the limiting ring groove 763 is arranged in the first through hole 751 and the second through hole 752 of the unlocking seat 7.

Both unlocking sockets 7 have a third gear portion 764 arranged coaxially. The structure of the third gear 764 coincides with the structure of the first gear 36.

The unlocking seat 7 has a transmission cavity and a second gear transmission mechanism is arranged in the transmission cavity and is in transmission connection between the two third gear parts 764, the second gear transmission mechanism includes two second transmission gears 77, and the structure of the two second transmission gears 77 is consistent with that of the first transmission gear 66, so that the transmission ratio of the second gear transmission mechanism is 1. In the present embodiment, the housing of the unlocking seat 7 is composed of an upper case 78 and a lower case 79. The upper case 78 and the lower case 79 are welded and fixed to each other.

Referring to fig. 19, after the locking worm drive type band is locked, a locking gear member 63 (see fig. 11) is slid between the first gear portion 36 (see fig. 6) and the second gear portion 46 (see fig. 6) for convenience. The unlocking seats 7 are provided with radial ribs 741 uniformly distributed in the second end surface 74 along the circumference of the first through hole 751. The unlocking head 76 has an indicating arrow 765 at the end surface where the unlocking hole 762 is provided. When the indication arrow 765 points to the relief 741, the convex teeth of the locking gear member 63 are aligned with the tooth grooves of the first gear part 36 and the second gear part 46, so that the locking gear member 63 is simultaneously engaged with the first gear part 36 and the second gear part 46 when the sliding seat 6 is slid from the unlocking position to the locking position.

The locking step of the worm drive type locking hoop for locking the hose on the hard pipe is as follows:

1. mounting the unlocking seat 7 on the slide rail 53, so that the plunger ball 723 of the ball spring plunger 72 on the unlocking seat 7 abuts on the limiting end surface 532;

3. inserting a hexagonal wrench into the unlocking hole 762 of the unlocking head 76 of the unlocking seat 7, and rotating the unlocking head 76 so that the steel band 2 inserted from the installation channel 13 gradually protrudes from the other end of the installation channel 13, so that the steel band 2 is gradually pressed against the hose;

4. after the steel belt 2 presses the hose onto the hard pipe, the rotation angles of the first worm 3 and the second worm 4 are finely adjusted, so that the indication arrow 765 on the unlocking head 76 points to the convex ridge 741 on the second end face 74;

5. when the unlocking slide 7 is removed from the slide rail 53, the slide holder 6 is slid from the unlocking position to the locking position by the lock spring 54, the lock gear member 63 simultaneously meshes with the first gear part 36 and the second gear part 46, and the convex teeth of the first gear part 36 and the second gear part 46 are engaged in the guide groove 651 of the lock guide 65.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A locking worm drive type hoop comprises a hoop shell (1) and a steel belt (2), and is characterized by further comprising a first worm (3) and a second worm (4) which are rotatably mounted on the hoop shell (1) and arranged in parallel, wherein the thread direction of the first worm (3) is opposite to the thread direction of the second worm (4); the steel belt (2) is provided with a first tooth slot (25) matched with the first worm (3) and a second tooth slot (26) matched with the second worm (4); the first worm (3) has a first gear part (36); the second worm (4) has a second gear part (46) having the same number of teeth as the first gear part (36); the hoop housing (1) is further mounted with a locking gear piece (63) that meshes with both the first gear part (36) and the second gear part (46).

2. A locking worm-drive clamp according to claim 1, characterized in that the clamp housing (1) is provided with a slide seat (6) for mounting the locking gear member (63), the slide seat (6) being slidably mounted to the clamp housing (1) and having a locking position and an unlocking position; when the sliding seat (6) is in the locking position, the locking gear piece (63) is meshed with the first gear part (36) and the second gear part (46); when the sliding seat (6) is in the unlocking position, the locking gear piece (63) is separated from the position between the first gear part (36) and the second gear part (46).

3. An anti-loose worm-drive clamp according to claim 2, characterized in that the clamp housing (1) is further provided with a locking spring (54) abutting at one end against the slide seat (6) and at the other end against the clamp housing (1), the locking spring (54) urging the slide seat (6) to always have a tendency to slide from the unlocking position to the locking position.

4. The anti-loosening worm-drive type clamp according to claim 3, wherein the clamp shell (1) is provided with a slide rail (53), the slide rail (53) is provided with a limiting slide groove (531) along the length direction thereof, and the limiting slide groove (531) is provided with a limiting end surface (532) at one end far away from the clamp shell (1); the sliding seat (6) is provided with a first sliding groove (61) matched with the sliding rail (53), and the sliding seat (6) is also provided with a limiting bolt (62) of which the end part is inserted into the limiting sliding groove (531); when the end part of the limit bolt (62) abuts against the limit end surface (532), the sliding seat (6) is in the locking position.

5. A locking worm-drive clamp according to claim 2, characterized in that the slide shoe (6) is further fitted with a locking guide (65); when the sliding seat (6) is in the locked position, the locking guide (65) abuts against the first gear part (36) and the second gear part (46) so that the worm section of the first worm (3) and the worm section of the second worm (4) are pressed against the steel belt (2).

6. An anti-loosening worm-drive clamp according to claim 5, characterized in that the locking guide (65) has a guide groove (651) into which the teeth of the first gear part (36) and the teeth of the second gear part (46) are engaged, the guide groove (651) having a guide slope that is inclined downward in a direction away from the clamp housing (1).

7. A locking worm-drive clamp according to claim 4, characterised in that the slide shoe (6) is further provided with a first gear transmission comprising an even number of first transmission gears (66) connected in series to the first gear part (36) and the second gear part (46), the first gear transmission having a transmission ratio of 1; when the sliding seat (6) is in the locked position, the first gear transmission mechanism is disengaged from the first gear part (36) and the second gear part (46); when the sliding seat (6) is in the unlocking position, the first gear transmission mechanism is in transmission connection with the first gear part (36) and the second gear part (46).

8. The anti-loosening worm-drive type clamp according to claim 7, wherein the clamp shell (1) is also detachably provided with an unlocking seat (7), the unlocking seat (7) is provided with a second sliding slot (71) matched with the sliding rail (53), the top of the unlocking seat (7) is further provided with a second hole communicated with the second sliding slot (71), a ball spring plunger (72) is arranged in the second hole, and a plunger ball (723) of the ball spring plunger (72) is partially positioned in the second sliding slot (71); when the unlocking seat (7) is arranged on the sliding rail (53) and the plunger ball (723) abuts against the limiting end face (532), the sliding seat (6) is in an unlocking position.

9. An anti-loosening worm-drive clamp according to claim 8, characterized in that the worm head of the first worm (3) and the worm head of the second worm (4) each have a worm rotation hole (37); the unlocking seat (7) is provided with a first end surface (73) facing the sliding seat (6) and a second end surface (74) facing away from the sliding seat (6); the unlocking seat (7) is provided with a first through hole (751) opposite to the worm head of the first worm (3) and a second through hole (752) opposite to the worm head of the second worm (4), unlocking heads (76) are rotatably arranged in the first through hole (751) and the second through hole (752) of the unlocking seat (7), the two unlocking heads (76) are respectively provided with an unlocking lug (761) matched with the worm rotating hole (37) of the first worm (3) or the worm rotating hole (37) of the second worm (4), and one end back to the unlocking lug (761) is provided with an unlocking hole (762); the two unlocking heads (76) are in transmission connection through a second gear transmission mechanism with the transmission ratio of 1.

10. An anti-loosening worm-drive clamp according to claim 9, characterized in that the unlocking seat (7) is provided with radial ribs (741) in the second end face (74) and circumferentially distributed along the first through-hole (751), and the unlocking head (76) is provided with an indication arrow (765) in the end face provided with the worm rotation hole (37); when the indication arrow (765) points to the relief (741), the teeth of the locking gear member (63) are aligned with the teeth grooves of the first gear part (36) and the second gear part (46), so that the locking gear member (63) is simultaneously engaged with the first gear part (36) and the second gear part (46) when the sliding seat (6) is slid from the unlocking position to the locking position.