CN2739451Y - Rapid joint with nut-locking and elbow - Google Patents

Abstract

The utility model discloses a rapid joint with nut-locking and elbow which is used for a hydraulic pipe system. The utility model comprises a rapid joint I and a rapid joint II which are matched in pairs. Each rapid joint comprises an upper joint body, a lower joint body, a locknut and a sealing ring. The rapid joint is easy and reliable to use by using the locknut to lock. The upper joint body and the lower joint body can relatively rotate after the locknut is tightly locked. So a burst resisting hose can be prevented from buckling and a joint screw can be prevented from freeing which is caused by the swinging of the pipe lines. An angle bend is arranged in the middle section of the lower joint body. The burst resisting hose being able to arranged on an equipment can be avoided from damages caused by an undersize bend radius and closing with the burst resisting hose adaptor when the burst resisting hose droops and contacts the ground so that service life is prolonged. The two lower joint bodies can also be connected together so that field transport of equipments is convenient and leakage is decreased.

Description

The rapid pipe joint of locknut locking and band elbow

Technical field the utility model relates to locknut locking in a kind of hydraulic plumbing system and the rapid pipe joint of being with elbow.

Background technique rapid pipe joint is the important component part of hydraulic plumbing system, is that a kind of tool using that do not need just can be realized the joint of mounting or dismounting rapidly, and it can reduce leakage, avoids dirt to enter pipe-line system, is applied in the hydraulic plumbing system of various device.In use the pressure because of pipeline is big in traditional steel ball locking rapid pipe joint, the extruded side of steel ball groove is usually got gross distortion by the steel ball roll extrusion, make fittings body pull out to come out when in use this pulls out, insert not enter again when this is slotting, the actual inconvenience on the contrary of using.Particularly the rapid pipe joint for the both ends open formula often causes serious leakage.Also have the formula rapid pipe joint in the ninth of the ten Heavenly Stems of a kind of oil now, easy accessibility, but in disassembly process, needing only locknut one pine, liquid will leak in the pipeline, and leakage rate is very big.

The standard code of HG4-406-75 wire braided hose: the bending radius when high-pressure rubber pipe is installed should be greater than 9 times of high-pressure rubber pipe external diameter, and the flexural center should be greater than 6 times of high-pressure rubber pipe external diameter apart from the distance of joint, and can not twist.But oil hydraulic motor on the field work machinery or oil hydraulic pump etc. overhead all have certain height, hydraulic line is pulled and hauled a man on the ground, after being bent downwardly, drags on the ground by the high-pressure rubber pipe that comes out from rapid pipe joint, the sebific duct crust is easy to damage, damage because of corrosion very soon in the steel wire lowered in field environment of exposing, an often whole high-pressure rubber pipe is only scrapped because of damaging in the joint, and is very unfortunate.

The summary of the invention the purpose of this utility model is to provide the rapid pipe joint of a kind of locknut locking and band elbow; mounting or dismounting in use are convenient, reach purpose fast, reduce the leakage rate in using; simultaneously hydralic hose there is good protective action, prolongs its working life.

For achieving the above object, rapid pipe joint of the present utility model is made up of rapid pipe joint I and rapid pipe joint II, be used in pairs, each rapid pipe joint all is made up of upper connection body, lower contact body, locknut and seal ring four parts, and upper connection body upper end is to be used for the screw thread that connects with hydraulic equipment.There is the two seals ring recess outside of the upper connection body lower end of rapid pipe joint I, lock sheath blocks at upper connection body middle part and by the boss on the upper connection body, there is the screw thread that cooperates with locknut outside, lower contact body upper end, inner porose, can cooperate with the seal ring on the upper connection body and form sealing, lower contact body middle part is an elbow, is useful on the screw thread that connects with high-pressure rubber pipe in the lower contact of lower end.In rapid pipe joint II, there is the screw thread that cooperates with locknut the outside of upper connection body lower end, and is inner porose; There is the two seals ring recess outside of lower contact body upper end, and there is elbow at the middle part, and has boss to block locknut, and the screw thread that connects with high-pressure rubber pipe is arranged in the lower contact of lower end.After rapid pipe joint I and the rapid pipe joint II locknut locking separately, lower contact body and upper connection body are around axially rotating, and the fit dimension of locknut, boss and seal combination is all identical.

Adopted after the said structure, locknut locking can not produce burr, and mounting or dismounting easily and fast; Seal ring is contained in fittings body outside and is convenient to wiping and replacing, the two seals circle, seal more guaranteed, even locknut is totally released when hydraulic equipment shuts down, as long as lower contact is not extracted liquid with regard to can not leaking; Elbow can reduce the degree of crook of high-pressure rubber pipe, prolongs its working life; Lower contact can be rotated, and can avoid the high-pressure rubber pipe distortion, can avoid joint loosening simultaneously when high-pressure rubber pipe is swung.

The utility model is described in more detail below in conjunction with the drawings and specific embodiments for description of drawings.

Accompanying drawing is the sectional view of rapid pipe joint I and rapid pipe joint II in the embodiment of rapid pipe joint of the utility model locknut locking and band elbow.

Embodiment is as shown in drawings: the inside, upper connection body 2 upper end of rapid pipe joint I is useful on and the joining screw thread 1 of relevant device, there is spanner side in the outside, can be used to tighten or dismantle screw thread, there is two seals ring recess 5 lower end of upper connection body 2, O RunddichtringO 4 is housed in the groove, locknut 3 is enclosed within the middle part of upper connection body 2, and is blocked by boss 6.There is the screw thread that matches with locknut 3 outside of lower contact body 7 upper ends, and inside can cooperate with the seal ring 4 of upper connection body 2 lower ends, guarantees sealing.After the screw thread on locknut 3 and the lower contact body 7 was tightened, lower contact body 7 and upper connection body 2 can relatively rotate, and can not produce leakage, thereby can avoid high-pressure rubber pipe distortion or dismantle joint screw thread because of the pipeline swing.The middle part of lower contact body 7 is elbows 8, and the lower end has lower contact 9 to be used for connecting with high-pressure rubber pipe, and there is spanner side in the outside of lower contact body 7, and elbow 8 can avoid high-pressure rubber pipe because of crooked damage the by force.

The inside of upper connection body 10 upper ends of rapid pipe joint II has and the joining screw thread 18 of relevant device, there is spanner side the outside, the internal holes of upper connection body 10 lower ends can cooperate with the seal groove 12 and the seal ring 11 on lower contact body 15 tops, guarantee sealing, there is the screw thread that cooperates with locknut 14 outside, locknut 14 is enclosed within the middle part of upper connection body 10 and is blocked by boss 13, and after the screw thread on locknut 14 and the upper connection body 10 was tightened, lower contact body 15 and upper connection body 10 can relatively rotate.Equally, there is elbow 16 at lower contact body 15 middle parts, and lower contact 17 is arranged at the bottom.

Rapid pipe joint I and rapid pipe joint II are used in pairs, locknut 3 and 14, seal groove 5 are identical with 12 and the fit dimension located of boss 6 and 13 etc., after so fittings body 7 and 15 is extracted from upper connection body separately instantly, lower contact body 15 can insert in the lower contact body 7, locking locknut 14 can seal the liquid in the pipeline.When the hydraulic equipment of field work needs converting field, the lower contact body can be extracted, and reconfigure, can guarantee that liquid does not leak and convenient transportation.

As another embodiment of the present utility model, lower contact can be and the corresponding fit system of other kind high-pressure rubber hose coupling, and the upper connection body also can be other connecting mode, and such variation is all within protection domain of the present utility model.

Claims (2)

1, the rapid pipe joint of a kind of locknut locking that is used for hydraulic plumbing system and band elbow, form by rapid pipe joint I and rapid pipe joint II, be used in pairs, each rapid pipe joint all is made up of upper connection body, lower contact body, locknut and seal ring, it is characterized in that: upper connection body upper end have can with the joining screw thread of relevant device; There is O RunddichtringO groove (5) outside, lower end of the upper connection body (2) of rapid pipe joint I, locknut (3) is enclosed within the middle part of upper connection body (2) and is blocked by boss (6), there is the screw thread that cooperates with locknut (3) outside of lower contact body (7) upper end, inner porose, can form sealing with the seal ring (4) on the fittings body (2), the lower end of lower contact body (7) is that the lower contact (9) that can connect screw thread with corresponding high-pressure rubber pipe is arranged, and the centre is elbow (8); There is the screw thread that can cooperate with locknut (14) outside of the lower end of the upper connection body (10) of rapid pipe joint II, there is seal groove (12) outside of lower contact body (15) upper end, the middle part is elbow (16), the lower end is that the lower contact (17) that can connect screw thread with corresponding high-pressure rubber pipe is arranged, locknut (14) is enclosed within on the lower contact body (15), and is blocked by boss (13); Locknut (3) is identical with fit dimension such as (12) place with locknut (14), boss (6) and boss (13) and seal groove (5); And after locknut locking, can relatively rotate between lower contact body and the upper connection body.

2, the rapid pipe joint of locknut locking according to claim 1 and band elbow is characterized in that: on upper connection body (2) and the lower contact body (15) 2 road seal grooves are arranged all.