CN216405107U - Connecting device of PE (polyethylene) protective sleeve and waterproof cover for stay cable - Google Patents

Abstract

The utility model relates to a connecting device of a PE (polyethylene) protective sleeve and a waterproof cover for a stay cable, which comprises the PE protective sleeve, the waterproof cover, a locking sleeve and a contraction sleeve, wherein the contraction sleeve is a round sleeve with an opening, the outer circular surface is an outer circular conical surface, the inner circular surface is provided with inner sawtooth threads, the locking sleeve is a round sleeve with an inner conical hole and a round hole, the round hole is communicated with the large end of the inner conical hole, the round hole is internally provided with inner threads, the end part of the PE protective sleeve is sleeved on a PE protective sleeve mounting step of the waterproof cover, the contraction sleeve is sleeved at the end part of the PE protective sleeve, the locking sleeve is sleeved outside the contraction sleeve, the inner conical hole of the locking sleeve compresses the outer conical surface of the contraction sleeve, the inner sawtooth threads of the contraction sleeve are embedded into the PE protective sleeve, and the round hole of the locking sleeve connecting surface of the locking sleeve is in threaded connection with the waterproof cover of the waterproof cover. The PE protective sleeve is connected with the waterproof cover through the locking sleeve and the shrinkage sleeve, a short connecting pipe does not need to be additionally arranged, the structure is simple, the connection is reliable, the construction is convenient, and the installation efficiency is improved.

Description

Connecting device of PE (polyethylene) protective sleeve and waterproof cover for stay cable

Technical Field

The utility model relates to a connecting device, in particular to a connecting device of a PE (polyethylene) protective sleeve and a waterproof cover for a stay cable.

Background

The steel strand wires suspension cable all is provided with the buckler in bridge floor embedded pipe mouth department, and the buckler needs to be connected with the PE protecting pipe. The connected mode that uses at present all adopts PE pipe processing internal thread, and the buckler mouth of pipe processing external screw thread then assembles at the building site, installs again. There are 2 connection methods in the past.

A first connection is shown in fig. 1. The internal thread is processed to the PE connecting pipe of this kind of structure, need make the PE pipe than thicker, otherwise the lathe work screw thread can become too thin, and intensity receives the influence, and the general length of threaded connecting pipe is about 600mm, welds with PE protecting pipe again after the good screw thread of processing, screws up the buckler again. Because the PE pipe coefficient of expansion is big, receives the temperature influence to have expend with heat and contract with cold phenomenon, and the screw thread changes very easily, often can be because of weather becomes cold, and the screw thread is twisted and is not advanced the buckler, has now rarely had this kind of connected mode of engineering usefulness.

A second connection is shown in fig. 2-3. The structure is that a steel sleeve is firstly pressed into a PE connecting pipe with the length of about 600mm, then the pressed steel sleeve is processed with internal threads to ensure that the threads of the PE connecting pipe are not influenced by temperature, then the PE connecting pipe is assembled, a decorative sleeve is sleeved outside the PE connecting pipe after the PE connecting pipe is assembled to beautify a bulged connecting part, and the PE connecting pipe with the length of about 600mm is welded with the PE protecting pipe.

In both modes, a short connecting pipe with the length of 600mm needs to be added to process threads, and the connecting pipe needs to be welded with a PE (polyethylene) protective sleeve, so that the welding process is increased, the operation is troublesome, and the appearance is influenced by a welding port.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the utility model provides a PE protecting pipe and buckler connecting device for suspension cable is connected PE protecting pipe and buckler through lock sleeve and shrink sleeve, does not need to increase the connecting pipe of a lesson in addition and processes the screw thread, simple structure, connects reliably, and construction convenience, the installation effectiveness improves.

The technical scheme for solving the technical problems is as follows: a connecting device of a PE sheath pipe and a waterproof cover for a stay cable comprises the PE sheath pipe and the waterproof cover, and further comprises a locking sleeve and a contraction sleeve, wherein the contraction sleeve is a round sleeve with an opening, the outer circular surface of the contraction sleeve is an outer circular conical surface, the inner circular surface of the contraction sleeve is provided with inner sawtooth threads, the locking sleeve is a round sleeve with an inner conical hole and a round hole, the diameter of the round hole is larger than the diameter of the large end of the inner conical hole, the round hole is communicated with the large end of the inner conical hole, inner threads are arranged in the round hole, a PE sheath pipe mounting step and a locking sleeve mounting step are sequentially arranged at the end part of the waterproof cover connected with the PE sheath pipe from top to bottom, the outer circular surface of the waterproof cover between the PE sheath pipe mounting step and the locking sleeve mounting step is a locking sleeve connecting surface, and the locking sleeve connecting surface is provided with outer threads;

the utility model discloses a waterproof shield, including shrink sleeve, PE protecting sleeve, shrink sleeve, lock sleeve, the outer conical surface of shrink sleeve is compressed tightly to the interior taper hole of lock sleeve, and the internal sawtooth screw thread embedding PE protecting sleeve of shrink sleeve, the round hole of lock sleeve and the lock sleeve connection face threaded connection of buckler.

The width D of the opening of the shrink sleeve is 3-8 mm.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

1. according to the utility model, the PE sheath pipe is connected with the waterproof cover through the locking sleeve and the shrinkage sleeve, and a short connecting pipe is not required to be additionally arranged for processing threads, so that not only is the material saved, but also a welding joint of the connecting pipe and the PE sheath pipe is omitted, and the appearance is more attractive.

2. The utility model has simple structure, convenient construction, improved installation efficiency and reliable connection. As shown in fig. 11, the two ends of the PE sheath are connected by the connection method of the present invention, and a tensile test is performed by adding a connection pull rod, and the test result shows that the connection position of the locking sleeve and the shrinkage sleeve does not slip after the PE sheath is stretched and deformed. Tests prove that the pull-off strength of the connecting device is greater than the yield strength of the PE material by 15MPa, and the connection is firm.

The technical features of the present invention, which is a PE sheath tube and a waterproof cover connecting device for a stay cable, will be further described with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1: one of the connection structures of the existing waterproof cover and the PE protecting sleeve.

FIG. 2: the second connecting structure of the existing waterproof cover and PE sheath pipe.

FIG. 3: fig. 2 is an enlarged view of a portion a.

FIG. 4: the utility model discloses a structural schematic diagram of a connecting device of a PE (polyethylene) protective sleeve and a waterproof cover for a stay cable.

FIG. 5: fig. 4 is an enlarged view of part B.

FIG. 6: the structure of the waterproof cover of the present invention is schematically illustrated.

FIG. 7: the shrink sleeve of the present invention is a front cross-sectional view.

FIG. 8: fig. 7 is an enlarged view of the portion C.

FIG. 9: the top view of the shrink sleeve of the present invention.

FIG. 10: the structure of the locking sleeve of the present invention is schematically illustrated.

FIG. 11: the PE sheath pipe and the waterproof cover are connected in the mode of the utility model, and the tensile test is schematically shown.

In fig. 1-3: p1-a pre-buried pipe, P2-a waterproof cover, P3-a PE connecting pipe with threads, P4-a PE protecting sleeve, P5-a PE connecting pipe, P6-a steel thread sleeve and P7-a decorative sleeve.

In fig. 4-11: 1-a pre-buried pipe, 2-a waterproof cover, 3-a locking sleeve, 4-a shrinkage sleeve and 5-a PE protecting sleeve.

K1-connecting pull rod, K2-nut, K3-tensioning jack, K4-reaction frame and K5-force value sensor.

Detailed Description

Example 1: the utility model provides a PE protecting pipe and buckler connecting device for suspension cable, as shown in fig. 4-10, including PE protecting pipe 5 and buckler 2, still including lock sleeve 3 and shrink cover 4, the shrink cover is the round cover that has opening 42, and the outer disc of shrink cover is outer conical surface, and the interior disc of shrink cover is provided with interior sawtooth screw thread 41, the lock sleeve is the round cover that has interior taper hole 31 and round hole 32, and the round hole diameter is greater than interior taper hole main aspects diameter, and the round hole communicates with the main aspects of interior taper hole, is provided with the internal thread in the round hole, and the buckler tip of being connected with PE protecting pipe has down set gradually PE protecting pipe installation step 21 and lock sleeve installation step 23 from last, and the outer disc of the buckler between PE protecting pipe installation step and the lock sleeve installation step is connected face 22 for the lock sleeve, and this lock sleeve is connected the face and is provided with the external screw thread.

5 tip suits of PE protecting pipe are on the PE protecting pipe installation step 21 of buckler, and shrink sleeve 4 suits is at 5 tip of PE protecting pipe, and 3 suits of lock sleeve are outside shrink sleeve 4, and the interior taper hole 31 of lock sleeve compresses tightly the outer conical surface of shrink sleeve 4, and the interior sawtooth screw thread 41 embedding PE protecting pipe 5 of shrink sleeve, 22 threaded connection are connected with the lock sleeve of buckler to the round hole 32 of lock sleeve.

In this embodiment, the width D of the opening of the shrink sleeve is 3-8mm, preferably 5 mm.

The installation process of the utility model is as follows: the shrink sleeve is sleeved on the PE sheath pipe, the locking sleeve is sleeved in the shrink sleeve, the sheath pipe is inserted into the waterproof cover, the locking sleeve is screwed on the thread of the waterproof cover, the shrink sleeve shrinks through the taper of the locking sleeve, the shrink sleeve is embedded into the PE sheath pipe by means of the inner sawtooth thread of the shrink sleeve, and installation connection is completed.

Claims (2)

1. The utility model provides a PE protecting pipe and buckler connecting device for suspension cable, includes PE protecting pipe (5) and buckler (2), its characterized in that: the waterproof cover is characterized by further comprising a locking sleeve (3) and a contraction sleeve (4), wherein the contraction sleeve is a round sleeve with an opening (42), the outer circular surface of the contraction sleeve is an outer circular conical surface, the inner circular surface of the contraction sleeve is provided with inner sawtooth threads (41), the locking sleeve is a round sleeve with an inner conical hole (31) and a round hole (32), the diameter of the round hole is larger than the diameter of the large end of the inner conical hole, the round hole is communicated with the large end of the inner conical hole, inner threads are arranged in the round hole, a PE sheath pipe mounting step (21) and a locking sleeve mounting step (23) are sequentially arranged at the end part of a waterproof cover connected with the PE sheath pipe from top to bottom, the outer circular surface of the waterproof cover between the PE sheath pipe mounting step and the locking sleeve mounting step is a locking sleeve connecting surface (22), and the locking sleeve connecting surface is provided with outer threads;

the utility model discloses a waterproof shield, including shrink sleeve, PE protecting sleeve, shrink sleeve, lock sleeve, the outer conical surface of shrink sleeve is compressed tightly to the interior taper hole of lock sleeve, and the internal sawtooth screw thread embedding PE protecting sleeve of shrink sleeve, the round hole of lock sleeve and the lock sleeve connection face threaded connection of buckler.

2. The device for connecting the PE sheath pipe and the waterproof cover for the stay cable according to claim 1, characterized in that: the width D of the opening of the shrink sleeve is 3-8 mm.

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