CN110864174A

CN110864174A - Rotary quick joint

Info

Publication number: CN110864174A
Application number: CN201911176940.5A
Authority: CN
Inventors: 陆忠跃
Original assignee: Jiangsu Nantong Longtao Hose Group Co Ltd
Current assignee: Jiangsu Nantong Longtao Hose Group Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-03-06

Abstract

The invention relates to a rotary quick joint in the technical field of fire fighting equipment, which comprises a quick joint and a roller; the end part of the quick connector, which is connected with the water hose and deviates from the water hose, is provided with a slide way, the slide way is an annular slide way arranged along the circumferential direction of the quick connector, and the slide way comprises a limiting ring and a slide surface; the roller is installed in on the slide, the interior roll surface of roller is in the running surface, the spacing ring is right the roller is in the axial position of slide is injectd. According to the invention, through the combination of the quick connector and the roller, the quick connector can rotate by taking the outer rolling surface of the roller as a fulcrum, and after the quick connector is connected with the fire hose, the quick connector and the fire hose can synchronously rotate, so that the problems that in the prior art, the shell is blocked and high-pressure fire-fighting emergency water cannot quickly reach the spraying device due to asynchronous rotation of the quick connector and the fire hose are solved, and the fire-fighting speed is improved.

Description

Rotary quick joint

Technical Field

The invention relates to the technical field of fire fighting equipment, in particular to a rotary quick connector.

Background

At present, the requirement of fire fighting troops or enterprises for fire fighting on waterproof belts is better, the lighter the waterproof belts are, so as to reduce the energy consumption of fire fighting personnel, various fire fighting water belts with light weight are available, for example, an invention patent with the publication number of CN107013764A discloses a high-pressure wear-resistant light fire fighting water belt which is woven by warps and wefts, wherein the warps and the wefts are made of high-strength high-modulus polyethylene fiber materials, and the main advantage of the fire fighting water belt is that the fire fighting water belt has the characteristic of light weight.

And the fire hose quick-operation joint that is using at present mainly uses convenient quick switch-on as research and development direction, consideration and research design to weight are less, make current light-duty fire hose insert current quick-operation joint after, at fire emergency rescue or rehearsal beginning back, high-pressure fire water makes the fire hose rotatory, in order to reach the state of adjusting to quick water-passing, but often appear the hose rotatory and quick-operation joint do not change or rotate the rotation rate that can not follow up the hose, the number of revolutions of hosepipe far above quick-operation joint appears, lead to blocking the shell, can not lead to the problem of water-passing.

The fire hose joint comprises a joint body with a hollow structure, wherein the joint body comprises an upper joint and a lower joint which are cylindrical, clamping grooves are formed in the upper end face of the upper joint at intervals along the axial direction, a sliding block is arranged in each clamping groove, a first magnet is arranged at the bottom end of each sliding block, a fixed seat is arranged at the bottom of the upper joint and below the clamping grooves, a second magnet is arranged on each fixed seat, magnetic poles of the first magnet and the second magnet are in a repellent state, and a hoop is matched with the lower joint in an upper shape. Although the invention is convenient for butt joint, the problem is solved when the invention is used with a portable fire hose.

Disclosure of Invention

In view of the shortcomings in the prior art, it is an object of the present invention to provide a rotary quick connector.

The invention provides a rotary quick joint, which comprises a quick joint and a roller;

the end part of the quick connector, which is connected with the water hose and deviates from the water hose, is provided with a slide way, the slide way is an annular slide way arranged along the circumferential direction of the quick connector, and the slide way comprises a limiting ring and a slide surface;

the roller is installed in on the slide, the interior roll surface of roller is in the running surface, the spacing ring is right the roller is in the axial position of slide is injectd.

In some embodiments, the roller is a needle bearing comprising a needle, a cage, and an outer race.

In some embodiments, the needle bearings are separate needle bearings, and a plurality of sets of the separate needle bearings are disposed on the slideway.

In some embodiments, the elastic ring is sleeved on the outer ring.

In some embodiments, the retainer ring extends radially of the quick connector to above the inner peripheral edge of the elastic ring.

In some embodiments, a cross-section of the resilient ring facing away from the outer circumferential surface of the outer ring is arcuate.

In some embodiments, the elastic ring is a rubber ring.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the combination of the quick connector and the roller, the quick connector can rotate by taking the outer rolling surface of the roller as a fulcrum, and after the quick connector is connected with the fire hose, the quick connector and the fire hose can synchronously rotate, so that the problems that in the prior art, the shell is blocked and high-pressure fire-fighting emergency water cannot quickly reach the spraying device due to asynchronous rotation of the quick connector and the fire hose are solved, and the fire-fighting speed is improved.

2. According to the invention, the roller is set as the needle roller bearing, so that the sliding surface can serve as the inner rolling surface of the roller, and the production cost is reduced on the basis of ensuring the rolling effect.

3. According to the invention, the elastic ring is arranged on the outermost layer of the rolling shaft, so that a good damping effect can be achieved for the quick connector in the collision or rolling process with the contact surface, a plurality of fixing links are saved, and the work efficiency is improved.

4. According to the invention, the outer circumferential surface of the elastic ring is arranged into the arch shape, and when the elastic ring is contacted with the contact surface, only the middle part of the arch is contacted with the contact surface, so that the friction resistance is reduced, and the rotation performance of the quick connector is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a cross-sectional view of a sliding end of a rotary quick connector according to the present invention;

FIG. 2 is a schematic view of the overall appearance structure of the present invention including an elastic ring;

FIG. 3 is a schematic view of the overall appearance of the quick coupling of the present invention;

fig. 4 is a sectional view of the divided rolling bearing.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

The quick connector of the fire hose is provided with a male quick connector and a female quick connector, when in use, the male quick connector is inserted into the female quick connector, the quick connector is in a butt joint type and also in a clamping type, the circumferential surface of the butt joint type male quick connector and the circumferential surface of the female quick connector of the clamping type male quick connector are generally flat, and the circumferential surface of the female quick connector of the clamping type male quick connector and the circumferential surface of the clamping type female quick connector are generally higher than that of the male quick connector, so that the structure and the corresponding effect of the quick connector are explained by taking the female quick connector in the clamping type male quick connector and the female:

as shown in fig. 1 to 4, the present invention provides a rotary quick coupling comprising a quick coupling 1 and a roller 2;

the end part of the quick connector 1, which is connected with the water hose and deviates from the water hose, is provided with a slideway 10, the slideway 10 is an annular slideway arranged along the circumferential direction of the quick connector 1, and the slideway 10 comprises a limiting ring 11 and a sliding surface 12;

the roller 2 is installed in on the slide 10, the interior rolling surface of roller 2 laminate in slide 12, the spacing ring 11 is right the roller 2 is in the axial position of slide 10 is injectd.

One end of the quick connector 1 is connected with a fire hose, an annular slide way 10 is arranged at the other end, namely in the circumferential direction of the end part connected with the male or female quick connector, the slide way 10 comprises limiting rings 11 and a slide surface 12, the slide surface 12 is positioned between the two limiting rings 11, the slide surface 12 is a part of the circumferential surface of the quick connector 1, and the two limiting rings 11 are parallel to each other. The slide way 10 can be integrally formed with the quick joint 1 body, two limiting rings 11 can be welded on the circular outer peripheral surface of the quick joint 1 to form the slide way 10, or an annular clamping groove is formed in the outer peripheral surface of the quick joint 1, one part of the limiting rings 11 is clamped into the annular clamping groove in a clamping mode, the part higher than the outer peripheral surface of the quick joint 1 can serve as a limiting function, the slide way 10 can also form the slide way 10 with the sliding surface 12, and other modes can also be adopted.

The roller 2 is a rolling bearing, the inner rolling surface of the roller 2 is attached to the sliding surface 12, the outer rolling surface is used as a surface which is in direct contact or indirect contact with the ground, two side surfaces of the outer rolling surface are positioned in the two limiting rings 11, and the circumferential surface of the top of each limiting ring 11 is higher than the inner rolling surface of the roller 2. When the slide way 10 and the quick connector 1 body are integrally formed, the roller 2 can be a separate roller and fixed by spot welding or bonding the side surface of the separate roller with the limiting ring 11; when the limiting ring 11 adopts a post-processing technology, the rolling shaft 2 can be an integral structure, and the outer circumferential surface of the quick connector 1 is sleeved with the limiting ring with a matched nominal diameter, and at the moment, the surface which is in contact with the inner rolling surface of the rolling shaft 2 is the sliding surface 12.

The quick connector 1 of the fire hose is combined with the roller 2, so that the quick connector 1 can rotate by taking the outer rolling surface of the roller 2 as a fulcrum, after the quick connector 1 is connected with the fire hose, when fire emergency rescue or fire training is carried out, after the thrown fire hose is in water, the hose needs to rotate rapidly and automatically due to unevenness so that high-pressure fire water can rapidly reach a spraying device at the front end to spray water for fire extinguishment, the problem that the fire hose cannot be rapidly rotated and adjusted to a smooth and rapid water passing state due to friction force with the ground or dead weight and the like in the prior art is solved, particularly, the existing light fire hose reduces the self weight due to the fact that the hose adopts a new process, and after high-pressure water is frequently introduced, the fire hose rotates and the quick connector does not rotate or the rotation speed cannot follow the dead weight to generate a shell clamping phenomenon due to the fact that the hose adopts friction force with the ground and the dead weight are added, causing the passageway of the fire fighting water to be blocked. The invention effectively solves the problem of synchronous rotation of the fire hose and the quick coupling after the fire hose is electrified, so that the fire water can quickly pass through the fire hose to reach the spray gun, thereby improving the fire fighting speed.

The roller 2 is a needle bearing, and the needle bearing includes a needle roller 20, a retainer 21, and an outer ring 23. The roller 2 adopts a needle bearing, an inner rolling surface of the roller can be effectively omitted, the sliding surface 10 is in contact with the needle roller 20 and serves as the inner rolling surface of the roller 2, the retainer ensures that the needle roller 20 rolls along the radial direction of the quick coupling 1, and the outer ring 23 serves as a rolling surface in direct contact or indirect contact with the ground.

The needle roller bearings are separated needle roller bearings, and a plurality of groups of the separated needle roller bearings are arranged on the slideway 10. The roller 2 is a separated needle roller bearing, so that the slideway 10 can be formed by being integrally formed with the quick connector 1, the subsequent welding or clamping connection and other forms of the limiting ring 11 are not needed, the working procedures are saved, the side surface of the separated needle roller bearing is fixed with the limiting ring 11 by welding or bonding process, and meanwhile, a plurality of groups of separated roller bearings are connected to the slideway 10, wherein the plurality of groups of separated roller bearings form a closed loop or a structure with a tiny gap, the closed loop structure can be formed by directly connecting every two groups of separated roller bearings, or an arc-shaped connecting piece with certain rigidity is arranged between every two groups of separated roller bearings, such as a steel sheet and an alloy sheet, and when the separated roller bearings are in a tiny gap structure, the gap between every two groups of separated roller bearings does not influence the rotation of the quick connector when contacting with the ground.

The elastic ring is sleeved on the outer ring 23 and further comprises an elastic ring 3. The elastic ring 3 can be a rubber ring. The internal surface of elastic ring 3 can contact with outer lane 23 with planar mode, make elastic ring 3 and roller bearing 2 produce static friction through the elastic action, but its static friction power ensures both relatively stable to a certain extent, and is preferred, offer on elastic ring 3's inner circumferential surface with outer lane 23 assorted recess, with outer lane 23 embedding recess in, greatly increased the power that both combine, not only contain the static friction power, also contain the elasticity tightening force of elastic ring 3, ensure both's combination firmness. The elastic ring 3 is sleeved on the outer ring 23, the elastic ring 3 can play a good shock absorption effect on the quick joint 1 in the process of collision or rolling with a contact surface, the service life of the quick joint 1 is prolonged, the elastic ring 3 integrally compresses the roller 2 on the sliding surface 12 of the slide way 10 through the elastic action of the elastic ring, the roller 2 is not required to be fixed by fixing measures of the roller 2 and the limiting ring 11, and particularly, when the slide way 10 and the quick joint 1 are integrally molded and a separated needle bearing is adopted, a plurality of fixing links are saved, the work efficiency is improved, and the production cost is reduced.

In addition, the elastic ring 3 is provided so that when the split needle roller bearing is used as a rotating member, the two split needle roller bearings may not be in contact with each other and the gap may be increased appropriately, thereby reducing the amount of the split needle roller bearing used and the production cost, and preferably 2 to 6 split needle roller bearings are used.

The limiting ring 11 extends to the upper part of the inner peripheral surface edge of the elastic ring 3 along the radial direction of the quick joint 1. That is, when the height of the outer peripheral surface of the retainer ring 11 is higher than the height of the inner periphery of the elastic ring 3, the retainer ring 11 limits the movement of the elastic ring 3 in the axial direction of the quick coupling 1, so that the elastic ring 3 does not fall off from the outer ring 23 of the roller 2 during the rolling process of the quick coupling 1, and the rotation effect of the quick coupling 1 is further improved. Preferably, the height of the stop collar 11 is set at 3-7 MM.

The section of the outer circumferential surface of the elastic ring 3 departing from the outer ring 23 is in an arch shape or a parabola shape. The cross section of the outer circumference of the elastic ring 3 is formed in an arch shape, or a parabolic shape, and is preferably symmetrical regardless of the arch shape or the parabolic shape. Because the elastic ring 3 is contacted with the contact surface, the contact area with the contact surface can be reduced when the section is in an arch shape, and only the middle part of the arch is contacted with the contact surface, thereby reducing the friction resistance and improving the rotation performance of the quick joint 1.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A rotary quick coupling is characterized by comprising a quick coupling (1) and a roller (2);

a slide way (10) is arranged at the end part of the quick connector (1) which is connected with and departs from the water hose, the slide way (10) is an annular slide way arranged along the circumferential direction of the quick connector (1), and the slide way (10) comprises a limiting ring (11) and a slide surface (12);

roller bearing (2) install in on slide (10), the interior rolling surface of roller bearing (2) laminate in slide (12), spacing ring (11) are right roller bearing (2) are in slide (10) axial position is injectd.

2. The rotary quick coupling according to claim 1, wherein the rollers (2) are needle bearings comprising a needle (20), a cage (21) and an outer race (23).

3. The rotary quick connector according to claim 2, wherein the needle bearings are split needle bearings, and a plurality of sets of the split needle bearings are provided on the slideway (10).

4. The rotary quick connector according to claim 1, further comprising an elastic ring (3) which is sleeved on the outer ring (23).

5. The rotary quick coupling according to claim 4, wherein the retainer ring (11) extends radially of the quick coupling (1) above the inner peripheral edge of the elastic ring (3).

6. The rotary quick-disconnect coupling according to claim 4, characterized in that the cross-section of the outer circumferential surface of the resilient ring (3) facing away from the outer ring (23) is arcuate.

7. The rotary quick coupling according to claim 4, wherein the resilient ring (3) is a rubber ring.