Adjustable pre-tightening hoop

Abstract

The present invention provides an adjustable pre-tightening hoop, comprising a hoop main band, a first mounting hole, a second mounting hole, an M-shaped elastic bow band, a first auxiliary band, and a second auxiliary band; the hoop main band is an annular band structure comprising a notch, the first mounting hole is arranged at one end of the hoop main band, the second mounting hole is arranged at the other end of the hoop main band, and the first mounting hole and the second mounting hole are used for installing an adjusting bolt; the elastic bow band is located on the hoop main band, the first auxiliary band is used for forming a complete circular structure with the hoop main band, and the second auxiliary band is used for connecting with the inner side of the elastic bow band; the present invention can adjust the inner diameter of the hoop and increase or decrease the pre-tightening force by screwing the bolt, so that the hoop can match pipes with different outer diameters, and has a wide range of uses; the hoop main band and the auxiliary band form a complete ring, without a clamping blind area, and the clamping effect is good, and the problem of the hoop loosening can be effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hoop, and in particular to an adjustable pre-tightening hoop structure for automobile pipeline connection. Background Art

[0002] A hoop is a connecting device used for fastening and installing joints of gas, water, oil and other pipelines. It plays a role of fastening and sealing. It is widely used in household appliances, automobiles, engineering machinery and other industries. The pipes that can be connected with a hoop include ordinary hoses, plastic hoses, steel pipes and other types.

[0003] The existing various types of adjustable hoops have problems such as complex adjustment structure and inconvenient disassembly and installation. At the same time, the complex structure leads to high manufacturing process requirements, easy damage, easy loosening and other disadvantages. In addition, there are certain clamping blind spots during use, resulting in poor clamping effect and poor sealing effect. Summary of the invention

[0004] The invention aims to provide a hoop with adjustable inner diameter and pre-tightening force.

[0005] To achieve the above objectives, the technical solution of the present invention is:

[0006] An adjustable pre-tightening hoop comprises a hoop main band, a first mounting hole, and a second mounting hole. The hoop main band is an annular band structure including a notch. The first mounting hole is arranged at one end of the hoop main band, and the second mounting hole is arranged at the other end of the hoop main band. The first mounting hole and the second mounting hole are used for installing an adjusting bolt. The invention is characterized in that the pre-tightening hoop also comprises an elastic bow band, a first auxiliary band, and a second auxiliary band; the elastic bow band is located on the hoop main band, the first auxiliary band is used to form a complete circular structure with the hoop main band, and the second auxiliary band is used to connect with the inner side of the elastic bow band.

[0007] Furthermore, the elastic bow band is arranged opposite to the notch on the hoop main band.

[0008] Furthermore, the elastic bow band is an M-shaped band structure.

[0009] Furthermore, the first hoop sub-belt is an arc-shaped belt structure.

[0010] Furthermore, each of the four corners of the first hoop auxiliary belt is provided with a first clamping groove.

[0011] Furthermore, the first hoop auxiliary band is closely attached to the inner side of the notch of the hoop main band, and the side edges of the overlapping parts of the hoop main band and the first hoop auxiliary band are inserted into the four first slots.

[0012] Furthermore, the second hoop sub-belt is an arc-shaped belt structure.

[0013] Furthermore, the second hoop auxiliary belt is arranged on the inner side of the hoop main belt relative to the first hoop auxiliary belt.

[0014] Furthermore, the second hoop sub-band is closely attached to the inner side of the elastic bow band, and the middle point of the second hoop sub-band is fixed to the inner side of the elastic bow band.

[0015] Furthermore, the four corners of the second hoop auxiliary belt 3 are respectively provided with a second clamping groove, and the side edges of the overlapping parts of the elastic bow belt and the second hoop auxiliary belt are clamped into the four second clamping grooves.

[0016] The beneficial effects of the present invention are:

[0017] 1. The hoop of the present invention has a continuous adjustment function. Within a certain adjustment range, the inner diameter of the hoop can be continuously adjusted, so that the hoop can match pipes with different outer diameters and has a wide range of uses.

[0018] 2. After the hoop of the present invention is tightened, a higher pre-tightening force can be applied, the main belt and the auxiliary belt form a complete ring, there is no clamping blind area, the tightening effect is good, and the problem of the hoop loosening can be effectively avoided.

[0019] 3. The present invention arranges an elastic bow band on the hoop, and the elastic bow band is an M-shaped band structure. The elastic bow band has a certain elasticity and can produce adaptive deformation as the force changes. Compared with the ordinary annular structure, the M-shaped band structure is easier to adjust the inner diameter of the hoop when tightening.

[0020] 4. The present invention can adjust the inner diameter of the hoop and increase or decrease the pre-tightening force by twisting the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the adjustable pre-tightening hoop.

[0022] Figure 2 It is a schematic diagram of the overall structure of the adjustable pre-tightening hoop.

[0023] Figure 3 Schematic diagram of the main hoop belt structure.

[0024] Figure 4 Schematic diagram of the hoop sub-belt structure.

[0025] Figure 5 Schematic diagram of the adjusting bolt structure.

[0026] Figure 6 Implementation effect diagram of adjustable pre-tightened hoop structure.

[0027] Wherein: the main hoop belt 1; the first mounting hole 11; the second mounting hole 12; the elastic bow belt 13; the first hoop auxiliary belt 2; the first clamping groove 21; the second hoop auxiliary belt 3; the second clamping groove 31; the bolt 4; the first connecting pipe 5; the second connecting pipe 6. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the invention clearer, the present invention is further described below with reference to the accompanying drawings.

[0029] The technical solution adopted by the present invention is that the adjustable pre-tightening hoop structure specifically includes: a hoop main band 1, a first hoop auxiliary band 2, a second hoop auxiliary band 3, and an adjusting bolt 4; the hoop main band 1, the first hoop auxiliary band 2 and the second hoop auxiliary band 3 are generally made of spring steel or other elastic steel.

[0030] like Figures 1 to 3 As shown, the hoop main belt 1 is an annular belt structure including a notch. A first mounting hole 11 is provided at one end of the hoop main belt 1, and a second mounting hole 12 is provided at the other end. The first mounting hole 11 and the second mounting hole 12 are used to install the adjusting bolt 4. The adjusting bolt 4 is as shown in FIG. Figure 5 As shown; the threads of the first mounting hole 11 and the second mounting hole 12 are rotated in opposite directions. When the adjusting bolt is turned, the distance between the two mounting holes can be adjusted to achieve the adjustment of the inner diameter of the hoop and the preload force.

[0031] An elastic bow band 13 is arranged on the hoop main band 1, and the elastic bow band 13 is an M-shaped band structure. Specifically, a section of the hoop main band 1 opposite to the notch of the hoop main band 1 is arranged to be M-shaped; the elastic bow band 13 has a certain elasticity and can produce adaptive deformation as the force changes.

[0032] The main hoop band 1 is the main structure of the hoop, has a certain elasticity, and the inner diameter can produce adaptive deformation within a certain range according to different forces; when in use, the main hoop band 1 is sleeved on the outer wall of the pipe to play a role of fixed connection.

[0033] like Figure 4 As shown, the first hoop sub-band 2 and the second hoop sub-band 3 are both arc-shaped belt structures, and the four corners of the first hoop sub-band 2 are respectively provided with a first clamping groove 21; the four corners of the second hoop sub-band 3 are respectively provided with a second clamping groove 31.

[0034] The first hoop sub-belt 2 and the second hoop sub-belt 3 are both located on the inner side of the hoop main belt 1 .

[0035] like Figure 1 and Figure 2As shown, the first hoop sub-band 2 is tightly attached to the inner side of the hoop main band 1, specifically, on the inner side near the notch of the hoop main band 1. The first hoop sub-band 2 can be moved limitedly along the hoop main band 1 to adjust the relative position of the first hoop sub-band 2 and the hoop main band 1; the first hoop sub-band 2 and the hoop main band 1 are combined to form a complete circular structure to achieve the fastening effect of the hoop on the pipe; the four first clamping grooves 21 are used to fix the end of the first hoop sub-band 2 with the first hoop sub-band 2 together; the side edges of the overlapping parts of the hoop main band 1 and the first hoop sub-band 2 can be clamped into the four first clamping grooves 21.

[0036] The second hoop sub-band 3 is tightly attached to the inner side of the hoop main band 1 and is arranged opposite to the first hoop sub-band 2; the middle point of the second hoop sub-band 3 is welded to the inner side of the elastic bow band 13; the four second clamping grooves 31 are used to fix the end of the second hoop sub-band 3 and the elastic bow band 13 together; the side edges of the overlapping parts of the elastic bow band 13 and the second hoop sub-band 3 can be clamped into the four second clamping grooves 31.

[0037] The adjusting bolt 4 is a bolt structure, and the adjusting bolt 4 is installed on the hoop main belt 1 through the first mounting hole 11 and the second mounting hole 12 on the hoop main belt 1; by turning the bolt 4, the distance between the first mounting hole 11 and the second mounting hole 12 can be adjusted, so that the inner diameter of the hoop and the installation preload can be adjusted.

[0038] When the adjustable pre-tightening hoop is in use, the first connecting tube 5 and the second connecting tube 6 of the same diameter are aligned, and the hoop is sleeved outside the pipe, specifically, at the connection between the first connecting tube 5 and the second connecting tube 6; the hoop is in a loose state, so that the hoop is in an overlapping position between the two connecting tubes; tighten the adjusting bolt 4, and the distance between the first mounting hole 11 and the second mounting hole 12 is continuously reduced, so that the inner diameter of the hoop is continuously reduced until the hoop is completely fitted with the outer walls of the two connecting tubes; continue to tighten the bolt so that the elastic bow band 13 is in a stressed state, the hoop is tensioned, and has a certain pre-tightening force, and the hoop installation is completed.

[0039] When the adjustable pre-tightening hoop is disassembled, the adjusting bolt 4 is tightened in the reverse direction, and the elastic bow band 13 is continuously loosened until the hoop band is completely loosened, and the hoop band can be removed from the connecting pipe, and the hoop disassembly is completed.

[0040] Finally, it should be noted that the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The above description is only the preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions recorded in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable pre-tightening hoop, comprising a hoop main belt (1), a first mounting hole (11), and a second mounting hole (12), wherein the hoop main belt (1) is an annular belt structure including a notch, the first mounting hole (11) is arranged at one end of the hoop main belt (1), and the second mounting hole (12) is arranged at the other end of the hoop main belt (1), the first mounting hole (11) and the second mounting hole (12) are used to install an adjusting bolt (4), characterized in that: The pre-tightening hoop further comprises an elastic bow band (13), a first auxiliary band (2), and a second auxiliary band (3); the elastic bow band (13) is located on the hoop main band (1); the first hoop auxiliary band (2) is closely attached to the inner side of the notch of the hoop main band (1); the first auxiliary band (2) is used to form a complete circular structure with the hoop main band (1); The first mounting hole (11) and the second mounting hole (12) have opposite thread directions; A section of the main hoop band (1) opposite to the notch of the main hoop band 1 is arranged in an M shape, and the middle point of the second auxiliary hoop band (3) is welded to the inner side of the elastic bow band (13); A second clamping groove (31) is respectively arranged at four corners of the second hoop sub-band (3), and the four second clamping grooves (31) are used to fix the end of the second hoop sub-band (3) and the elastic bow band (13) together; the side edges of the overlapping portion of the elastic bow band (13) and the second hoop sub-band (3) can be clamped into the four second clamping grooves (31).

2. The adjustable pre-tightening hoop according to claim 1, characterized in that The elastic bow band (13) is an M-shaped band structure.

3. The adjustable pre-tightening hoop according to claim 1, characterized in that The first hoop auxiliary belt (2) is an arc-shaped belt structure.

4. The adjustable pre-tightening hoop according to claim 1, characterized in that The four corners of the first hoop auxiliary belt (2) are respectively provided with a first clamping groove (21).

5. The adjustable pre-tightening hoop according to claim 1, characterized in that The first hoop auxiliary belt (2) is closely attached to the inner side of the notch of the hoop main belt 1, and the side edges of the overlapping parts of the hoop main belt 1 and the first hoop auxiliary belt 2 are clamped into four first clamping grooves (21).

6. The adjustable pre-tightening hoop according to claim 1, characterized in that The second hoop auxiliary belt (3) is an arc-shaped belt structure.

7. The adjustable pre-tightening hoop according to claim 1, characterized in that The second hoop auxiliary belt (3) is arranged on the inner side of the hoop main belt (1) opposite to the first hoop auxiliary belt (2).

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