CN211289132U

CN211289132U - Rotary quick joint

Info

Publication number: CN211289132U
Application number: CN201922067661.7U
Authority: CN
Inventors: 陆忠跃
Original assignee: Jiangsu Province Nantong Longtao Fire Hose Group Co ltd
Current assignee: Guangda Fire Fighting Equipment (Nantong) Co.,Ltd.
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-08-18
Anticipated expiration: 2029-11-26

Abstract

The utility model relates to a rotary quick joint in the technical field of fire fighting equipment, which comprises a quick joint and a rolling shaft; 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. The utility model discloses a combination of quick-operation joint and roller bearing for the outer rolling surface of quick-operation joint accessible roller bearing rotates for the fulcrum, is being connected the back with the fire hose, can realize quick-operation joint and fire hose synchronous revolution, has solved among the prior art both rotatory asynchronous card shell that leads to, and the problem of high-pressure fire control emergency water can't reach injection apparatus department fast improves the speed that the fire control was put out a fire.

Description

Rotary quick joint

Technical Field

The utility model relates to a fire-fighting equipment technical field specifically, relates to a rotation type quick-operation joint.

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.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a rotation type quick-operation joint.

According to the utility model, the rotary quick connector comprises a quick connector and a rolling shaft;

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 utility model discloses following beneficial effect has:

1. the utility model discloses a combination of quick-operation joint and roller bearing for the outer rolling surface of quick-operation joint accessible roller bearing rotates for the fulcrum, is being connected the back with the fire hose, can realize quick-operation joint and fire hose synchronous revolution, has solved among the prior art both rotatory asynchronous card shell that leads to, and the problem of high-pressure fire control emergency water can't reach injection apparatus department fast improves the speed that the fire control was put out a fire.

2. The utility model discloses a set up the roller bearing into bearing for the sliding surface can act as the interior rolling surface of roller bearing, ensures on the basis of roll effect, has reduced manufacturing cost.

3. The utility model discloses an outmost elastic ring that sets up at the roller bearing not only can play good shock attenuation effect to quick-operation joint with the contact surface collision or roll in-process, has saved a plurality of fixed links moreover, has improved the work efficiency.

4. The utility model discloses a set the outer periphery of elastic ring to the arch, when the contact of elastic ring and contact surface, only the middle part of arch and contact surface contact to reduce frictional resistance, improve quick-operation joint's rotation performance.

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 schematic cross-sectional view of a sliding end of a rotary quick coupling according to the present invention;

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

FIG. 3 is a schematic view of the overall appearance structure 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 the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

The quick-operation joint of fire hose has public female quick-operation joint, inserts female quick-operation joint with public quick-operation joint during the use in, has the dock, also has the income formula of blocking, and the butt joint back periphery of the public female quick-operation joint of dock is generally flat mutually, and its female quick-operation joint's of the public female quick-operation joint of income formula periphery is generally higher than public quick-operation joint, and for this reason, from saving the consumptive material aspect, female quick-operation joint in the public female quick-operation joint of income formula of blocking is the example, right the utility model discloses a structure and corresponding effect explain:

as shown in fig. 1-4, the present invention provides a rotary quick coupling, which comprises 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 utility model discloses effectively solved the fire hose and lead to the water after, fire hose and quick-operation joint's synchronous revolution problem for the fire water can reach spray gun department through the fire hose fast, thereby improves the speed that the fire control was put out a fire.

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 the specific embodiments of the 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 those 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 2, 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.