CN201954170U

CN201954170U - Hydraulic rubber pipe assembly

Info

Publication number: CN201954170U
Application number: CN201120080176.4U
Authority: CN
Inventors: 李东
Original assignee: LIUZHOU RENHUA TUBE INDUSTRY Co Ltd
Current assignee: LIUZHOU RENHUA TUBE INDUSTRY Co Ltd
Priority date: 2011-03-24
Filing date: 2011-03-24
Publication date: 2011-08-31
Anticipated expiration: 2021-03-24

Abstract

A hydraulic rubber pipe assembly relates to an accessory of a prestressed tensioning apparatus and comprises a hydraulic rubber pipe and joints connected to two ends of the hydraulic rubber pipe. Each joint comprises a core bar, a jacket and a nut, wherein the jacket is in sleeve connection with the tail end of the core bar, the nut is clamped at the head end of the core bar, the core bar is inserted into a core portion of the hydraulic rubber pipe, the nut is provided with inner threads which are used for being connected with a hydraulic jack or a tensioning oil pump, the distance between opposite sides of the nut ranges from 22mm to 26mm, the total length of the nut ranges from 20mm to 26mm, the large diameter of the inner threads is 16mm, screw pitch is 1.5, and the length of the threads ranges from 10mm to 15mm. The length of the head end, which is clamped in an inner hole of each nut, of each core bar ranges form 6mm to 8mm, the diameter of a convex shoulder ranges from 11mm to 12mm, the large diameter of outer threads is 10mm, and screw pitch is 1. The strength of each nut and the strength of each core bar are improved, so that the nuts and the core bars are not easy to be damaged. The hydraulic rubber pipe assembly has the advantages of long service life, capability of saving service cost and the like, and is applicable to being used in tensioning apparatuses.

Description

The hydralic hose assembly

Technical field

The utility model relates to a kind of accessory of prestress tensioning equipment, particularly a kind of hydralic hose assembly that is used to connect between hydraulic jack and the stretch-draw oil pump.

Background technique

In the pre-stress construction process, hydraulic jack is a kind of requisite tensioning equipment, and the hydralic hose assembly then is a kind of connection pipe fitting that is used to connect between hydraulic jack and the stretch-draw oil pump.The nut size of existing ￠ 6mm hydralic hose assembly joint is less, and the internal thread size is also less, and generally speaking, the opposite side distance of nut is from being S=17mm, and total length is L=15mm, and the big footpath of internal thread is M1=14 mm, pitch P 1=1.5, and internal thread length is L1=8mm; The size of core bar is also less, and head end length is L2=5mm, and the convex shoulder diameter is D=9mm, and the big footpath of outside thread is M2=8 mm, and pitch is P2=1.Therefore, in the using process of hydralic hose assembly, because the stretching force of hydraulic jack is very big, joint strength is less, causes this joint ratio to be easier to be damaged, and its working life is shorter.

Summary of the invention

The technical problems to be solved in the utility model is: provide a kind of hydralic hose assembly, to overcome little, the easy impaired deficiency of above-mentioned joint strength that prior art exists.

The technological scheme that solves the problems of the technologies described above is: a kind of hydralic hose assembly, the joint that comprises hydralic hose and be connected the hydralic hose two ends, this joint comprises core bar, be socketed in overcoat on the core bar, be connected to the nut of core bar head end, described core bar inserts the core of hydralic hose, nut has the internal thread that is used to connect hydraulic jack or stretch-draw oil pump, the opposite side distance of described nut is from being 22～26mm, total length is 20～26mm, the big footpath of internal thread is 16 mm, pitch is 1.5, and internal thread length is 10～15mm.

Further technological scheme of the present utility model is: the head end length that described core bar is connected in the nut inner hole is 6～8 mm, and the convex shoulder diameter is 11～12mm, and the big footpath of outside thread is 10 mm, and pitch is 1.

Because adopt said structure, the hydralic hose assembly of the utility model is compared with existing hydralic hose assembly, has following beneficial effect:

Because the utility model has increased the size of the nut of joint, the opposite side distance that is about to nut is from increasing to S=22～26mm, total length increases to L=20～26mm, and the internal thread size changes M16 * 1.5 into, and reach increases to L1=10～15mm, therefore, the utility model can increase the intensity of nut greatly, promptly is used in the bigger hydraulic jack of stretching force, also is difficult for being damaged, thereby can prolong its working life, save user cost.

In addition, the utility model has also increased the core bar size of joint, is about to the head end length that core bar is connected in the nut inner hole and increases to 6～8 mm, convex shoulder increasing diameter to 11～12mm, the outside thread size increases to 10 mm * 1, thereby can further increase the intensity of joint, further prolongs its working life.

Below, the technical characteristics to the hydralic hose assembly of the utility model is further described in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1: the structural representation of the hydralic hose assembly of the utility model,

Fig. 2: the structural representation of the joint of this hydralic hose assembly,

Among the figure,

The 1-hydralic hose, 2-joint, 201-core bar, 202-overcoat, 203-nut;

The opposite side distance of S-nut is from, the total length of L-nut, the internal thread length of L1-nut,

The head end length of L2-core bar, the convex shoulder diameter of D-core bar, the big footpath of the internal thread of M1-nut,

The big footpath of the outside thread of M2-core bar, the pitch of P1-nut, the pitch of P2-core bar.

Embodiment

Embodiment one:

Disclosed among Fig. 1 is a kind of ￠ 6mm hydralic hose assembly, it is made of hydralic hose 1 and the joint 2 that is connected hydralic hose 1 two ends, described joint 2 comprises core bar 201, be socketed in the overcoat 202 on the core bar, the nut 203(that is connected to the core bar head end is referring to Fig. 2), described core bar 201 inserts the core of hydralic hose, overcoat 202 is interference fitted in the port of hydralic hose 1, nut 203 has the internal thread that is used to connect hydraulic jack or stretch-draw oil pump, the opposite side distance of described nut 203 is from being S=22mm, total length is L=20mm, the big footpath of internal thread is M1=16 mm, pitch P 1=1.5, internal thread length is L1=10mm; The head end length that described core bar 201 is connected in the nut inner hole is L2=6 mm, and the convex shoulder diameter is D=11mm, and the big footpath of outside thread is M2=10 mm, pitch P 2=1.

Embodiment two:

A kind of ￠ 6mm hydralic hose assembly, the basic structure of this hydralic hose assembly is with embodiment one, it constitutes by hydralic hose 1 and the joint 2 that is connected hydralic hose 1 two ends, described joint 2 comprises core bar 201, be socketed in overcoat 202 on the core bar, be connected to the nut 203 of core bar head end, institute's difference is: the opposite side distance of described nut 203 is from being S=24mm, and total length is L=22mm, and the big footpath of internal thread is M1=16 mm, pitch P 1=1.5, internal thread length is L1=12mm; The head end length that described core bar 201 is connected in the nut inner hole is L2=7 mm, and the convex shoulder diameter is D=11mm, and the big footpath of outside thread is M2=10 mm, pitch P 2=1.

Embodiment three:

A kind of ￠ 6mm hydralic hose assembly, the basic structure of this hydralic hose assembly is with embodiment one, it constitutes by hydralic hose 1 and the joint 2 that is connected hydralic hose 1 two ends, described joint 2 comprises core bar 201, be socketed in overcoat 202 on the core bar, be connected to the nut 203 of core bar head end, institute's difference is: the opposite side distance of described nut 203 is from being S=26mm, and total length is L=26mm, and the big footpath of internal thread is M1=16 mm, pitch P 1=1.5, internal thread length is L1=15mm; The head end length that described core bar 201 is connected in the nut inner hole is L2=8 mm, and the convex shoulder diameter is D=12mm, and the big footpath of outside thread is M2=10 mm, pitch P 2=1.

As a kind of conversion of embodiment one～embodiment three, the dimensional parameters in the head end length of described core bar 201, convex shoulder diameter, the big footpath of outside thread is the core bar size of ￠ 6mm hydralic hose assembly joint routinely also.

Another conversion as embodiment one～embodiment three, the size of described nut and core bar can also increase or reduce, generally speaking, nut is of a size of: opposite side distance is from being S=22～26mm, total length is L=20～26mm, the big footpath of internal thread is M1=16 mm, pitch P 1=1.5, and internal thread length is L1=10～15mm; Core bar 201 is of a size of: head end length is L2=6～8 mm, and the convex shoulder diameter is D=11～12mm, and the big footpath of outside thread is M2=10 mm, pitch P 2=1.

Claims

1. hydralic hose assembly, the joint (2) that comprises hydralic hose (1) and be connected hydralic hose (1) two ends, this joint (2) comprises core bar (201), be socketed in the overcoat (202) on the core bar, be connected to the nut (203) of core bar head end, described core bar (201) inserts the core of hydralic hose, nut (203) has the internal thread that is used to connect hydraulic jack or stretch-draw oil pump, it is characterized in that: the opposite side distance of described nut (203) is from being S=22～26mm, total length is L=20～26mm, the big footpath of internal thread is M1=16 mm, pitch P 1=1.5, internal thread length is L1=10～15mm.

2. hydralic hose assembly according to claim 1 is characterized in that: the head end length that described core bar (201) is connected in the nut inner hole is L2=6～8 mm, and the convex shoulder diameter is D=11～12mm, and the big footpath of outside thread is M2=10 mm, pitch P 2=1.