CN210484338U

CN210484338U - T-shaped bolt assembly of high-temperature-resistant V-shaped clamp and V-shaped clamp thereof

Info

Publication number: CN210484338U
Application number: CN201921154017.7U
Authority: CN
Inventors: 夏念飞; 叶忠海; 陈国纯
Original assignee: Wenzhou Keboda Auto Parts Co ltd
Current assignee: Wenzhou Keboda Auto Parts Co ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-05-08
Anticipated expiration: 2029-07-22

Abstract

A T-shaped bolt component of a high-temperature-resistant V-shaped hoop comprises a T-shaped bolt and a lining; the T-shaped bolt comprises a cross rod and a vertical rod, one end of the vertical rod is connected with the cross rod, and the other end of the vertical rod is provided with an external thread; the T-shaped bolt is made of high-temperature alloy; the bush is sleeved outside the cross rod of the T-shaped bolt, and the vertical rod of the T-shaped bolt penetrates through the side face of the bush. The utility model also discloses a high temperature resistant V type clamp, it includes foretell T type bolt assembly. The utility model discloses a T type bolt assembly compares with current T type bolt, can satisfy the operation requirement of high temperature V type clamp under the condition that does not change T type bolt's overall dimension.

Description

T-shaped bolt assembly of high-temperature-resistant V-shaped clamp and V-shaped clamp thereof

Technical Field

The utility model relates to a clamp.

Background

In order to achieve the connection between two pipes with flange flanges on an automobile, a V-shaped clamp is usually used to clamp the flanges of the two pipes, so that the two flange planes are in close contact to achieve the purpose of sealing. V-clamps typically have a band, a plurality of liners, T-bolts, T-sleeves, and self-locking nuts. The band is bent into a C-shape. After the heads of the two ends of the strap are rolled up, a cross rod of the T-shaped bolt and a transverse pipe of the T-shaped sleeve are respectively penetrated, and the head of the strap is fixed by spot welding to ensure that the T-shaped bolt and the T-shaped sleeve are fixed and can bear tension or pressure. The lining plate is spot-welded on the hoop belt, the vertical rod of the T-shaped bolt penetrates through the vertical pipe of the T-shaped sleeve and then is in threaded connection with the self-locking nut, the hoop belt can be pre-tightened by rotating the self-locking nut, and finally the flange is tightened to achieve a sealing effect. Among them, T type bolt is the most important part in the V type clamp, plays the effect of connecting and fastening. The existing T-shaped bolt is made of carbon steel or stainless steel, the T-shaped bolt is formed through cold heading, and in order to ensure that the T-shaped bolt and a strap have enough contact surface area, the diameter of a cross rod of the T-shaped bolt is generally made to be 4-6mm larger than the diameter of an external thread of a vertical rod of the T-shaped bolt.

With the implementation of the national emission standard, the requirement on the high temperature resistance of the V-shaped clamp is higher and higher, and the highest requirement is 650 ℃. Because the high temperature resistance of the carbon steel or the stainless steel is not high, the T-shaped bolt made of the carbon steel or the stainless steel can creep at the temperature of more than 500 ℃, and the creep can cause the insufficient clamping force of the V-shaped clamp and the poor sealing performance. For a V-band that is required to meet high temperature resistance, it is preferable to use a high temperature alloy to manufacture the T-bolt in order to avoid creep of the T-bolt.

On the other hand, since the tensile strength of the steel material is reduced at high temperature, in order to ensure the tensile strength of the clamping band under high-temperature working conditions, the width of the clamping band needs to be increased, and correspondingly, the width of the cross bar of the existing T-shaped bolt needs to be increased, because if the width of the cross bar of the T-shaped bolt is inconsistent with the width of the clamping band, the T-shaped bolt and the clamping band are stressed unevenly. However, because the T-shaped bolt made of high-temperature alloy is subjected to the influence of the fluidity of the material and the process when the T-shaped bolt is manufactured by cold heading forming, the size of the cold heading is limited, so that only the T-shaped bolt with the diameter equal to the diameter of the external thread of the vertical rod can be manufactured, the length of the horizontal rod can not be lengthened, the requirement that the width of the horizontal rod of the T-shaped bolt is consistent with the width of the clamping band can not be met, meanwhile, the diameter of the horizontal rod can not meet the requirement, the contact area between the horizontal rod of the T-shaped bolt and the clamping band is insufficient, the stress of the T-shaped bolt and the clamping band is uneven, and.

Disclosure of Invention

The utility model aims to solve the technical problem that a T type bolt assembly of high temperature resistant V type clamp is provided, it compares with current T type bolt, can satisfy the operation requirement of high temperature V type clamp under the condition that does not change the overall dimension of T type bolt.

The utility model aims to solve still another technical problem provide a high temperature V type clamp.

The embodiment of the utility model provides a T-shaped bolt component of a high-temperature resistant V-shaped clamp, which comprises a T-shaped bolt and a bush; the T-shaped bolt comprises a cross rod and a vertical rod, one end of the vertical rod is connected with the cross rod, and the other end of the vertical rod is provided with an external thread; the T-shaped bolt is made of high-temperature alloy; the bush is sleeved outside the cross rod of the T-shaped bolt, and the vertical rod of the T-shaped bolt penetrates through the side face of the bush.

Another embodiment of the present invention provides a high temperature resistant V-shaped clamp, which includes a strap, a T-shaped sleeve and a nut; the strap is provided with a first winding head formed by outwards curling and extending the first end of the strap and a second winding head formed by outwards curling and extending the second end of the strap, and the first end and the second end of the strap are respectively connected with the strap body of the strap; a transverse pipe of the T-shaped sleeve penetrates into an inner hole of the second rolling head, and a vertical pipe of the T-shaped sleeve penetrates through the side wall of the second rolling head; the high-temperature-resistant V-shaped clamp is characterized by further comprising the T-shaped bolt assembly; the length of a bushing of the T-shaped bolt assembly is consistent with the width of the clamping band, and the bushing penetrates into an inner hole of the first rolling head; the vertical rod of the T-shaped bolt sequentially penetrates through the side wall of the first rolling head, the transverse pipe of the T-shaped sleeve and the vertical pipe of the T-shaped sleeve and is in threaded connection with the nut.

The utility model discloses following advantage and characteristics have at least:

in the embodiment, the bushing is sleeved on the cross rod part of the T-shaped bolt made of the high-temperature alloy material, the diameter of the cross rod part is increased, and the length of the bushing is easily kept consistent with the width of the strap, so that the T-shaped bolt can be guaranteed to bear 650 ℃ of high temperature, the T-shaped bolt and the strap are guaranteed to be stressed uniformly under the condition that the overall dimension of the T-shaped bolt is not changed compared with the existing T-shaped bolt, and the service temperature of the V-shaped clamp can reach 650 ℃.

Drawings

Fig. 1 to 3 respectively show a perspective structure diagram, a top view and a side view of a T-bolt assembly according to an embodiment of the present invention.

Fig. 4 is a schematic view showing an overall structure of a high-temperature V-band according to another embodiment of the present invention.

Fig. 5 shows an exploded view of a high temperature resistant V-band clamp according to another embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 to 3 respectively show a perspective structure diagram, a top view and a side view of a T-bolt assembly according to an embodiment of the present invention. As shown in fig. 1 to 3, a T-bolt assembly according to an embodiment of the present invention includes a T-bolt 1 and a bushing 2.

The T-shaped bolt 1 comprises a cross rod 11 and a vertical rod 12, one end of the vertical rod 12 is connected with the cross rod 11, and the other end of the vertical rod 12 is provided with an external thread 13. The T-shaped bolt is made of high-temperature alloy, optionally, the grade of the high-temperature alloy is A286, and the grade of the high-temperature alloy A286 is good in temperature resistance, so that high-temperature creep is avoided. In the present embodiment, the T-bolt 1 is formed by cold heading.

The bush 2 is sleeved outside the cross rod 11 of the T-shaped bolt 1, and the vertical rod 12 of the T-shaped bolt penetrates through the side face of the bush 2. Alternatively, the material of the bushing 2 is stainless steel, and the bushing 2 is formed by punching a stainless steel strip. The side of the bush 2 opposite the stem 12 is provided with an axial notch 22, the axial notch 22 extending in the axial direction of the bush 2 and passing through both ends of the bush 2 and the central hole 20 of the bush 2. The provision of the axial notches 22 makes the stamping manufacture easier.

Please refer to fig. 3 and 4. According to the utility model discloses a high temperature resistant V type clamp of an embodiment includes T type bolt 1, bush 2, strap 3, a plurality of welts 4, T type sleeve pipe 5 and nut 6.

The band 3 is bent into a C-shape. The band 3 has a first winding head 31 formed by extending the first end 3a of the band in an outward curling manner and a second winding head 32 formed by extending the second end 3b of the band in an outward curling manner, and the first end 3a and the second end 3b of the band are respectively connected with the band body of the band 3. The bushing 2 of the T-bolt assembly is inserted into the inner hole 310 of the first roller 31, and the length of the bushing 2 of the T-bolt assembly is identical to the width of the band 3, which means that the length of the bushing 2 is the same as the nominal size of the width of the band 3 with similar tolerance. The cross tube 51 of the T-shaped sleeve 5 penetrates the inner hole 320 of the second scroll head 32, and the vertical tube 52 of the T-shaped sleeve 5 penetrates the side wall of the second scroll head 32. The vertical rod 12 of the T-bolt 1 passes through the side wall of the first rolling head 31, the horizontal tube 51 of the T-shaped sleeve 5 and the vertical tube 52 of the T-shaped sleeve 5 in sequence, and is in threaded connection with the nut 6 to tighten the clamp. In this embodiment, the first end 3a and the second end 3b of the band 3 are respectively connected to the body of the band 3 by spot welding, so that the T-bolt 1 is fixed to the T-shaped sleeve 5 and can bear tension or pressure.

A plurality of backing plates 4 are attached to the inner wall of the band 3. In the present embodiment, the number of the lining plates 4 is three or more, the lining plates 4 are disposed at intervals, and the lining plates 4 are connected to the inner wall of the band 3 by spot welding.

In this embodiment, through establish the horizontal pole position at the T type bolt of making by the superalloy material with the bush cover, the diameter at horizontal pole position has been increaseed, and accomplish the length of bush and the width of strap keep unanimous easily (the length of bush can be according to strap width design), thereby compare with current T type bolt and do not change the condition of the overall dimension of T type bolt, can guarantee that T type bolt bears 650 ℃ of high temperature, can guarantee again that T type bolt and strap atress are even, make the service temperature of V type clamp can reach 650 ℃.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A T-shaped bolt component of a high-temperature-resistant V-shaped hoop is characterized by comprising a T-shaped bolt and a lining;

the T-shaped bolt comprises a cross rod and a vertical rod, one end of the vertical rod is connected with the cross rod, and the other end of the vertical rod is provided with an external thread; the T-shaped bolt is made of high-temperature alloy;

the bushing is sleeved outside the cross rod of the T-shaped bolt, and the vertical rod of the T-shaped bolt penetrates through the side face of the bushing.

2. A T-bolt assembly for a high temperature resistant V-clamp as claimed in claim 1 wherein the side of the bushing opposite the stem is provided with an axial notch extending axially of the bushing and through both ends of the bushing and the central bore of the bushing.

3. A T-bolt assembly for a high temperature resistant V-band clamp as claimed in claim 1 or claim 2, wherein the bushing is stainless steel.

4. A T-bolt assembly for a high temperature resistant V-band clamp as claimed in claim 3 wherein the bushing is stamped and formed from stainless steel strip.

5. A T-bolt assembly for a high temperature resistant V-band as claimed in claim 1, wherein the bushing has a thickness of 1mm to 2 mm.

6. A T-bolt assembly for a high temperature resistant V-band as claimed in claim 1 wherein the T-bolt is formed by cold heading.

7. A high-temperature-resistant V-shaped clamp comprises a strap, a T-shaped sleeve and a nut; the strap is provided with a first winding head formed by outwards curling and extending the first end of the strap and a second winding head formed by outwards curling and extending the second end of the strap, and the first end and the second end of the strap are respectively connected with the strap body of the strap; a transverse pipe of the T-shaped sleeve penetrates into an inner hole of the second rolling head, and a vertical pipe of the T-shaped sleeve penetrates through the side wall of the second rolling head; wherein the high temperature resistant V-band further comprises a T-bolt assembly as claimed in any one of claims 1 to 6;

the length of a bushing of the T-shaped bolt assembly is consistent with the width of the clamping band, and the bushing penetrates into an inner hole of the first rolling head; and the vertical rod of the T-shaped bolt sequentially penetrates through the side wall of the first rolling head, the transverse pipe of the T-shaped sleeve and the vertical pipe of the T-shaped sleeve and is in threaded connection with the nut.