Novel hose clamp

Abstract

The utility model discloses a novel hose clamp which comprises a steel belt, a clamp shell and a screw rod, the combined height of the steel belt and the clamp shell is 11.2 + / -0.2 mm, one end of the steel belt is provided with a first arc-shaped groove, and the first arc-shaped groove is used for facilitating penetration and positioning of the steel belt and the clamp shell. The riveting height of a steel belt and a hoop shell is set to be 11.2 mm, under the riveting height, after a screw rod is assembled, the no-load torsion of the screw rod is lower than 0.1 N.m, after the screw rod is separated from the steel belt, the screw rod cannot retreat from the hoop shell even if the screw rod rotates reversely, and when the torsion of screwing the screw rod is within 1.35 N.m, the steel belt can be tightly attached to a detection jig without gaps.

Description

Technical field:

[0001] The utility model relates to the technical field of pipeline connection, in particular to a novel throat clamp. Background technology:

[0002] The throat clamp refers to the fastener used for the connection between soft and hard pipes. It is widely used in automobiles, tractors, forklifts, locomotives, ships, mines, petroleum, chemicals, pharmaceuticals, agriculture and other water, oil, gas, dust, etc. It is an ideal connection fastener. The throat clamp is relatively small and its value is very small, but the role of the throat clamp is huge. American throat clamp, also known as clamp. American stainless steel throat clamp: divided into small American throat clamp and large American throat clamp, the throat clamp width is 12.7mm and 14.2mm respectively. Using the through-hole process, the throat clamp has a wide range of applications, is torsion-resistant and pressure-resistant, has balanced torsional torque, is firmly and tightly locked, has a large adjustment range, and is suitable for fasteners for connecting soft and hard pipes above 30mm. It has a beautiful appearance after assembly. Features: The worm has low friction and is suitable for connecting mid-to-high-end models, pole-holding equipment, steel pipes and hoses or anti-corrosion materials.

[0003] For example, a Chinese patent application number 201721813217.X is an American-style throat clamp with strong sealing performance, comprising a hoop band (1), one end of the hoop band (1) is fixedly connected to a fixing sleeve (2), the top of the fixing sleeve (2) is fixedly connected to a hoop shell (3), the center of the hoop shell (3) is rotatably connected to a rotating shaft (4), the surface of the rotating shaft (4) is fixedly connected to a threaded sleeve (5), one end of the rotating shaft (4) located outside the hoop shell (3) is fixedly connected to a rotating block (6), one side of the rotating shaft (4) located on the inner surface of the hoop shell (3) is fixedly connected to a ratchet (7), one side of the inner wall of the hoop shell (3) and located at a position corresponding to the ratchet (7) is fixedly connected to a central shaft (8), the surface of the central shaft (8) is rotatably connected to a ratchet (9), one side of the ratchet (9) is fixedly connected to a release rod (10), and one side of the ratchet (9) is fixedly connected to one end of the central shaft through a torsion spring (11). In the assembly dimensions of the throat clamp, the combined height of the clamp band and the clamp shell is an important dimension. When the combined height of the clamp band and the clamp shell is less than 11.mm, the screw will be difficult to rotate and easily stuck. When the combined height of the clamp band and the clamp shell is greater than 11.4mm, the screw will rotate loose, resulting in a decrease in the maximum torque that the throat clamp can withstand. Due to the above-mentioned size issues, the throat clamp screws on the market cannot meet the requirement of a free torque lower than 0.1Nm.

[0004] In view of this, the inventor proposes the following technical solution. Utility model content:

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a novel throat clamp.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a new throat hoop, comprising: a steel belt, a hoop shell, and a screw. The combined height of the steel belt and the hoop shell is 11.2±0.2mm. A first arc-shaped groove is provided at one end of the steel belt, and the first arc-shaped groove is used to facilitate the insertion and positioning of the steel belt and the hoop shell.

[0007] Furthermore, in the above technical solution, the width of the steel strip is 12.7 mm and the thickness is 0.6 mm; the length of the hoop shell is 19.2 mm.

[0008] Furthermore, in the above technical solution, the outer diameter of the screw is 8.4±0.1mm, the thread pitch is 2.5±0.15mm, and the thread height is 1.4±0.1mm; the front and rear ends of the screw are respectively provided with a front locking groove and a rear locking groove for assembling with the hoop shell, wherein the outer diameter of the front locking groove is 5.1mm and the width is 2.5mm; the outer diameter of the rear locking groove is 5.4mm and the width is 2mm.

[0009] Furthermore, in the above technical solution, the length of the hoop shell is 19.2±0.2mm, and the height is 16.8±0.3mm. The hoop shell is provided with a first pressing claw portion and a second pressing claw portion for riveting and fixing with the steel strip, and the width of the first pressing claw portion and the second pressing claw portion is 9.5±0.2mm.

[0010] Furthermore, in the above technical solution, a screw hole portion with an inner diameter of 6.6 mm and used to cooperate with a screw rod is provided in the middle part of the hoop shell, and a left stamping arm and a right stamping arm are extended on both sides of the screw hole portion for holding and riveting the steel belt; the first pressing claw portion and the second pressing claw portion are respectively located at the ends of the left stamping arm and the right stamping arm, and the widest part between the left stamping arm and the right stamping arm is 17.4 mm, and the thickness of the left stamping arm and the right stamping arm is 0.9 mm.

[0011] Furthermore, in the above technical solution, a second arc-shaped groove corresponding to the first arc-shaped groove of the steel strip is provided at the joint between the screw hole portion and the left punching arm and the right punching arm, and the outer diameter of the screw hole portion is 12 mm.

[0012] Furthermore, in the above technical solution, the steel belt is provided with a plurality of crescent grooves spaced apart from each other, and the crescent grooves are distributed on the steel belt in an inclined shape; the end of the steel belt is also provided with a square slot hole for riveting and pressing with the hoop shell, and the square slot hole is located in the first arc-shaped groove.

[0013] Furthermore, in the above technical solution, the pitch between the crescent grooves is 2.5 mm, which matches the thread pitch of the screw of 2.5 mm; the width of the crescent groove is 1.2 mm, which matches the thread bottom width of the screw of 1 mm, and the length of the crescent groove is 6.1 mm.

[0014] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: in the utility model, the riveting height of the steel strip and the hoop shell is set to 11.2mm. At this riveting height, after the screw is assembled, its no-load torque is less than 0.1Nm, and after the screw is separated from the steel strip, the screw cannot exit the hoop shell even if it rotates in the opposite direction, and when the torque of tightening the screw is within 1.35Nm, the steel strip can fit tightly with the detection fixture without any gap. Description of the drawings:

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is the internal structure diagram of the utility model;

[0018] Figure 4 It is the front view of the screw in the utility model;

[0019] Figure 5 It is a schematic diagram of the local pitch of the screw in the utility model;

[0020] Figure 6 It is a side view of the screw in the utility model;

[0021] Figure 7 It is a front view of the hoop shell in the utility model;

[0022] Figure 8 It is a schematic diagram of the internal structure of the hoop shell in the utility model;

[0023] Fig. 9 It is the front view of the steel strip in the utility model;

[0024] Fig.10 It is a side view of the steel strip in the utility model. Specific implementation method:

[0025] The utility model is further described below in conjunction with specific embodiments and drawings.

[0026] See Figures 1 to 10As shown, a new type of throat clamp includes a steel band A, a hoop shell B, and a screw C. The combined height of the steel band A and the hoop shell B is 11.2±0.2 mm. A first arc groove A1 is provided at one end of the steel band A. The first arc groove A1 is used to facilitate the insertion and positioning of the steel band A and the hoop shell B. The riveting height of the steel band A and the hoop shell B is set to 11.2 mm. At this riveting height, after the screw C is assembled, its no-load torque is less than 0.1 Nm, and after the screw C is separated from the steel band A, the screw C cannot be withdrawn from the hoop shell B even if it rotates in the opposite direction, and when the torque of tightening the screw C is within 1.35 Nm, the steel band A can fit tightly with the detection fixture without gaps.

[0027] The outer diameter of the screw C is 8.4±0.1mm, the pitch of the thread is 2.5±0.15mm, and the height of the thread is 1.4±0.1mm; the front and rear ends of the screw C are respectively provided with a front snap-in groove C1 and a rear snap-in groove C2 for assembling and locking with the hoop shell B, wherein the outer diameter of the front snap-in groove C1 is 5.1mm and the width is 2.5mm; the outer diameter of the rear snap-in groove C2 is 5.4mm and the width is 2mm. The combined snap-in section length of the screw C and the hoop shell B is 20mm. The above dimensions are the combined snap-in dimensions of the screw C and the hoop shell B, which keep the screw C and the hoop shell B in close contact. Among them, the outer diameter of the front snap-in groove C1 is set to 5.1mm, and the outer diameter of the rear snap-in groove C2 is set to 5.4mm, so that the screw C can be easily rotated into the hoop shell B, but it cannot be withdrawn after reversing, which effectively prevents the screw from falling off. In addition, the surface of the screw C is passivated and waxed. Passivation can increase the salt spray test time of the product, and surface wax can improve the smoothness of the screws.

[0028] The outer diameter of screw C is 8.4±0.1mm, which is different from the outer diameter of the large American screw on the market, which is 8.6mm. The purpose is to keep the screw smooth for the combination of screw C, hoop shell B and steel belt A, so that the no-load torque of screw C is kept below 0.1Nm. A front clamping groove C1 is set at the front end of screw C, and the front clamping groove C1 is an annular groove. The annular groove is the limit outer diameter size of screw C introduced into hoop shell B and steel belt A. Its size is set to 5.1mm, so that screw C can be introduced into hoop shell B without wear, and after the introduction is completed, screw C cannot be reversed and withdrawn, ensuring that throat hoop B will not lose the screw. The throat hoop screw on the market cannot achieve this feature. The screw on the market is easy to introduce, but can be withdrawn by reversing, which has quality risks.

[0029] The length of the hoop shell B is 19.2±0.2mm, the height is 16.8±0.3mm, and the hoop shell B is provided with a first pressing claw portion B1 and a second pressing claw portion B2 for riveting and fixing with the steel strip A, and the width of the first pressing claw portion B1 and the second pressing claw portion B2 is 9.5±0.2mm. The first pressing claw portion B1 and the second pressing claw portion B2 are provided on both sides of the hoop shell B, and the first pressing claw portion B1 and the second pressing claw portion B2 are pressed and assembled with the square slot A3 of the steel strip A, which is different from the hoop shell and steel strip welding method on the market.

[0030] The middle part of the hoop shell B is provided with a screw hole portion B3 with an inner diameter of 6.6 mm and used for cooperating with the screw rod C. The left stamping arm B4 and the right stamping arm B5 for holding and riveting the steel strip A are extended on both sides of the screw hole portion B3; the first pressing claw portion B1 and the second pressing claw portion B2 are respectively located at the ends of the left stamping arm B4 and the right stamping arm B5, and the widest part between the left stamping arm B4 and the right stamping arm B5 is 17.4 mm, and the thickness of the left stamping arm B4 and the right stamping arm B5 is 0.9 mm.

[0031] The joints between the screw hole B3 and the left punch arm B4 and the right punch arm B5 are provided with a second arc groove B6 for matching with the first arc groove A1 of the steel strip A. The outer diameter of the screw hole B3 is 12 mm. The second arc groove B6 is provided on both sides of the inner side of the hoop shell C. The second arc groove B6 is the same as the first arc groove A1 on the steel strip A, so that the steel strip A is easy to introduce when combined with the hoop shell B, and the riveting height is stable.

[0032] The width of the steel strip A is 12.7mm and the thickness is 0.6mm; the steel strip A is provided with a plurality of crescent grooves A2 spaced at intervals, and the crescent grooves A2 are distributed on the steel strip A in an inclined shape; the end of the steel strip A is also provided with a square slot A3 for riveting and fitting with the hoop shell B, and the square slot A3 is located in the first arc groove A1. The square slot A3 is provided at one end of the steel strip A, and the left punching arm B4 and the right punching arm B5 are tightly held at the square slot A3 during riveting, and the first pressing claw part B1 and the second pressing claw part B2 are extended from both sides of the square slot A3, so as to realize the riveting and fixing of the hoop shell B and the steel strip A. Secondly, the first arc groove A1 in the shape of a concave arc is punched at the rectangular groove A3, which matches the second arc grooves B5 on both sides of the hoop shell B, so as to facilitate the steel strip A to penetrate the hoop shell B and position, and make the riveting dimensions of the steel strip A and the hoop shell B stable.

[0033] The pitch between the crescent grooves A2 is 2.5 mm, which matches the thread pitch of the screw C of 2.5 mm; the width of the crescent groove A2 is 1.2 mm, which matches the thread bottom width of the screw C of 1 mm, and the length of the crescent groove A2 is 6.1 mm.

[0034] To sum up, when the utility model is used, firstly, the first arc groove A1 end of the steel strip A is inserted into the second arc groove B6 on the hoop shell B, and then the left punching arm B4 and the right punching arm B5 are riveted by the riveting mechanism, so that the left punching arm B4 and the right punching arm B5 are bent and tightly embraced into the square slot A3, and during the riveting process, the first pressing claw part B1 and the second pressing claw part B2 are turned to both sides and inserted into the two sides of the square slot A3 to achieve positioning, thereby achieving the fixation of the steel strip A and the hoop shell B; further, the steel strip A is rolled so that the other end of the steel strip A is also inserted into the hoop shell B, and then the screw C is inserted into the screw hole part B3 of the hoop shell B, so that the threaded teeth of the screw C match the crescent groove A2 of the steel strip A, thereby combining into a complete throat hoop.

[0035] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, features and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A novel throat clamp, comprising a steel band (A), a clamp shell (B), and a screw (C), characterized in that: The combined height of the steel strip (A) and the hoop shell (B) is 11.2±0.2 mm, and a first arc-shaped groove (A1) is provided at one end of the steel strip (A), and the first arc-shaped groove (A1) is used to facilitate the insertion and positioning of the steel strip (A) and the hoop shell (B).

2. A novel throat clamp according to claim 1, characterized in that: The width of the steel strip (A) is 12.7 mm and the thickness is 0.6 mm; the length of the hoop shell (B) is 19.2 mm.

3. A novel throat clamp according to claim 1, characterized in that: The outer diameter of the screw (C) is 8.4±0.1mm, the thread pitch is 2.5±0.15mm, and the thread height is 1.4±0.1mm; the front end and the rear end of the screw (C) are respectively provided with a front locking groove (C1) and a rear locking groove (C2) for assembling with the hoop shell (B), wherein the outer diameter of the front locking groove (C1) is 5.1mm and the width is 2.5mm; the outer diameter of the rear locking groove (C2) is 5.4mm and the width is 2mm.

4. The novel throat clamp according to claim 1 is characterized in that: The length of the hoop shell (B) is 19.2±0.2mm, and the height is 16.8±0.3mm. The hoop shell (B) is provided with a first pressing claw portion (B1) and a second pressing claw portion (B2) for riveting and fixing with the steel strip (A), and the width of the first pressing claw portion (B1) and the second pressing claw portion (B2) is 9.5±0.2mm.

5. A novel throat clamp according to claim 4, characterized in that: The middle part of the hoop shell (B) is provided with a screw hole portion (B3) with an inner diameter of 6.6 mm and used for matching and connecting with the screw rod (C), and the left punching arm (B4) and the right punching arm (B5) are extended on both sides of the screw hole portion (B3) for holding and riveting the steel belt (A); the first pressing claw portion (B1) and the second pressing claw portion (B2) are respectively located at the ends of the left punching arm (B4) and the right punching arm (B5), and the widest part between the left punching arm (B4) and the right punching arm (B5) is 17.4 mm, and the thickness of the left punching arm (B4) and the right punching arm (B5) is 0.9 mm.

6. A novel throat clamp according to claim 5, characterized in that: A second arc-shaped groove (B6) is provided at the joint between the screw hole portion (B3) and the left punching arm (B4) and the right punching arm (B5) for matching with the first arc-shaped groove (A1) of the steel strip (A), and the outer diameter of the screw hole portion (B3) is 12 mm.

7. A novel throat clamp according to any one of claims 1 to 6, characterized in that: The steel strip (A) is provided with a plurality of spaced crescent grooves (A2), which are distributed on the steel strip (A) in an inclined manner; the end of the steel strip (A) is also provided with a square slot hole (A3) for riveting and pressing with the hoop shell (B), and the square slot hole (A3) is located in the first arc-shaped groove (A1).

8. The novel throat clamp according to claim 7 is characterized in that: The pitch between the crescent grooves (A2) is 2.5 mm, which matches the thread pitch of the screw (C) of 2.5 mm; the width of the crescent groove (A2) is 1.2 mm, which matches the thread bottom width of the screw (C) of 1 mm, and the length of the crescent groove (A2) is 6.1 mm.

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