CN116417191A - Load-bearing devices and load-bearing equipment for armored cables - Google Patents

Abstract

A load-bearing device and load-bearing equipment for armored cables, characterized in that the load-bearing device includes: a load-bearing body, the load-bearing body includes: a first glue injection cavity and a second glue injection cavity penetrating along the axial direction, Wherein, the second glue injection chamber forms a locking tapered surface at one end close to the first glue injection chamber; a locking assembly, the locking assembly includes a coaxially arranged sleeve, and one end of the sleeve is formed with a The other end of the tapered outer surface matched with the locking tapered surface is formed with an engaging groove along the circumferential direction on the inner surface; the core is sleeved in the sleeve, and the core of the core An accommodating space is formed between the outer surface and the inner surface of the sleeve; a cavity is penetrated through the core along the axial direction; one end of the core forms a limiting part matched with the engaging groove. The invention can realize the combination of two processes of mechanical locking and pouring, and effectively improves the body strength of the armored cable.

Description

Load-bearing devices and load-bearing equipment for armored cables

technical field

The invention relates to the technical field of marine exploration auxiliary tools, in particular to a load-bearing device and load-bearing equipment for armored cables.

Background technique

Armored cable is a solid combination of different cables and metal armored protective layers, including armored thermocouples, armored thermal resistors, armored heaters, armored leads, and armored optical cables. The armor protection layer of armored cable can be added to the cable of any structure to increase the mechanical strength of the cable, enhance the tensile strength and compressive strength. The following is an example of the application of armored optical cables in marine science.

In order to better utilize and manage the ocean, human beings use various modern technologies and sensors to investigate and detect the ocean environment. When marine scientific research ships are operating, it is necessary to use winches and steel wire armored optical cables to place underwater detection equipment in the depths of the ocean for near-sea detection or detection operations. The load-bearing device is the key docking device for connecting the steel wire armored optical cable with the underwater detection equipment.

The load-bearing device is a key system component supporting the use of armored photoelectric composite cables, and its strength is related to the safety of the entire detection system. Its function is to transmit the tensile force of each layer of tensile steel wire armor to the load-bearing connection plate completely and evenly. It is the link between the underwater detection equipment and the armored optical cable, and at the same time ensures that the optical unit and electrical unit inside the optical cable do not bear external loads. , which can ensure continuous photoelectric signal communication with underwater detection equipment during operation.

Steel wire armored optical cables are custom-made products. As the country’s ocean reconnaissance and detection operations have gradually shifted from shallow seas to deep seas in recent years, the design, production process, and test and detection of steel wire armored optical cables have gradually matured. However, the development of supporting key load-bearing devices There are few units, low level of supporting technology, and low utilization rate of the strength of the existing load-bearing devices, which to a certain extent leads to high redundant design of armored optical cables, which restricts the pace of deep sea exploration.

Load-bearing devices are mainly divided into two types: pouring type and wedge locking. Among them, there are usually two ways of casting: one is casting with molten metal, and the other is casting with epoxy resin. The watertight layer of the inner sheath poured with molten metal has high requirements on temperature, and it is necessary to cool down the inner sheath layer of the pouring part, and the assembly process is difficult. Because the anti-corrosion grease with high adhesion on the surface of the armor layer is difficult to clean completely, epoxy resin casting may be difficult to achieve the body strength of the steel wire armored optical cable due to insufficient friction between the resin and the steel wire. In addition, during the pouring process, the armored steel wires are broken and the winding angle of each layer of steel wires is changed, resulting in different forces on different steel wires in the same steel wire layer, and it is difficult for the load-bearing device to reach the body strength of the steel wire armored optical cable.

The installation process of the mechanical wedge locking method is complicated, and each layer needs to be locked separately, which has high requirements for the operator, and there is no standard type of operating hydraulic machine available. The locking tooling and wedge locking structural parts need to be armored according to different sizes. The cable diameter is designed and customized, and the prestress of each layer is different due to the layering operation during the locking process, and plastic deformation occurs in the radial direction of the steel wire, resulting in a single wedge locking structure that usually only reaches the steel wire armored optical cable body. About 80% of the strength.

Contents of the invention

In order to provide a new type of armored cable load-bearing device that has a large pulling load capacity, can adapt to various complex sea conditions, and can prevent excessive bending of the cable, the present invention provides a load-bearing device for armored cables. The load-bearing device includes: a load-bearing main body, the load-bearing main body includes: a first glue injection cavity and a second glue injection cavity penetrating along the axial direction, wherein the second glue injection cavity is close to the first glue injection cavity One end forms a locking conical surface, and the end of the locking conical surface close to the first glue injection chamber is set as a small end; and a locking assembly, which includes coaxially arranged:

A sleeve, one end of the sleeve is formed with a tapered outer surface that matches the locking tapered surface, and the other end of the sleeve is formed with an engaging groove along the circumferential direction on the inner surface; and

a core, the core is sleeved in the sleeve, and an accommodation space is formed between the outer surface of the core and the inner surface of the sleeve to allow the armored wire of the armored cable to pass; and, the The core is penetrated with a cavity along the axial direction to allow the cables of the armored cable to pass through; and, one end of the core forms a limiting part matched with the engaging groove.

The present invention also provides a load-bearing device for an armored cable, the load-bearing device for an armored cable includes: a bending protection assembly, and the bending protection assembly includes: a tubular protective sheath, the outer surface of the tubular protective sheath A plurality of ring-shaped protrusions are closely arranged along the axial direction; and, a third connecting piece fixedly arranged at one end of the tubular protective sheath; and, the load-bearing device for the armored cable, the load-bearing device passes through The first connecting piece is fixedly connected to the third connecting piece, wherein the first connecting piece is fixedly connected to one end of the load-bearing main body corresponding to the first glue injection chamber (that is, the small end of the tapered portion end).

Preferably, the load-bearing device for armored cables further includes a second connecting piece, one end of the second connecting piece is fixedly connected to the cylindrical portion, and the other end of the second connecting piece is connected to the swing connecting assembly ; Wherein, the swing connection assembly includes a universal joint and a load-bearing connecting plate, and the two ends of the universal joint are respectively hinged to the second connecting piece and the load-bearing connecting plate so that the load-bearing connecting plate It can swing with multiple degrees of freedom relative to the second connecting piece.

The beneficial effect of the present invention is that: the first glue injection cavity and the second glue injection cavity of the load-bearing device of the present invention cooperate with the locking assembly to realize the combination of mechanical locking and pouring, effectively improving the The body strength of the armored cable. Specifically, the locking assembly of the present invention enables the steel wires of the armored optical cable to be stressed evenly, making full use of its load-bearing capacity. On the other hand, glue filling after crimping is to further improve the load-bearing capacity of the load-bearing device. Combining the two can further improve the strength of the steel wire armored optical cable body without changing the armored optical cable and glue.

When the armored optical cable is being towed, under the action of seawater, the armored optical cable may bend along the joint of the load-bearing device. When the bending radius is too small, the inner cable of the armored optical cable will be damaged due to fatigue over time, reducing the armor. Install optical cable service life. The main purpose of the bending protection part of the present invention is to prevent the bending radius of the armored optical cable from being smaller than the allowable minimum bending radius when the armored optical cable is bent, so as to improve the working life of the armored optical cable.

To sum up, the load-bearing device and load-bearing equipment for armored cables of the present invention first crimp and lock the steel wire and then pour glue, the body strength utilization rate is high, and the overall benefit is high; excessive bending of the cable can be prevented, and the service life of the cable can be improved; The load-bearing device is equipped with a universal joint, which can offset part of the internal force caused by seawater disturbance and improve the reliability of the connection.

Description of drawings

Fig. 1 is the overall schematic diagram of load-bearing equipment of the present invention;

Fig. 2 is a three-dimensional schematic diagram of a load-bearing assembly of the present invention;

Fig. 3 is a sectional view of the load-bearing main body of the present invention;

Fig. 4 is a sectional view of the locking assembly of the present invention;

Fig. 5 is the front view of load-bearing equipment of the present invention;

Figure 6 is a top view of Figure 5;

Fig. 7 is a partially enlarged view of I of Fig. 5, which is used to illustrate the connection relationship between the third connecting member and the first connecting member;

Fig. 8 is a partial enlarged view of II of Fig. 5, which is used to show the connection relationship between the first connecting member and the tapered part;

Fig. 9 is a partial enlarged view of III in Fig. 5, which is used to show the cooperation relationship between the load-bearing body and the locking assembly;

Fig. 10 is a partial enlarged view of IV in Fig. 5, which is used to show the connection relationship between the second connecting piece and the swing connection assembly;

Fig. 11 is a partial schematic diagram of A direction in Fig. 6;

Fig. 12 is a schematic diagram of a bending protection component preventing excessive bending of an armored cable.

Reference signs:

Detailed ways

The load-bearing device and load-bearing equipment for armored cables provided by the present invention include three parts: the load-bearing device 1, the bending protection component 3 and the swing connection component 4, which are further described in conjunction with the accompanying drawings.

1. Load-bearing device

As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 9, the present invention provides a load-bearing device for armored cables, the load-bearing device 1 includes: a load-bearing body 11, and the load-bearing body 11 includes: a coaxial cable A tapered portion 111 and a cylindrical portion 112 are provided, wherein the large end of the tapered portion 111 is connected to the cylindrical portion 112; the tapered portion 111 and the cylindrical portion 112 are respectively penetrated along the axial direction The first glue injection chamber 113 and the second glue injection chamber 114, wherein, the second glue injection chamber 114 is formed with a locking tapered surface 115 at one end close to the first glue injection chamber 113, and the locking cone One end of the surface 115 close to the tapered portion 111 is set as a small end; and, the lock assembly 12, the lock assembly 12 includes a coaxial sleeve 121, one end of the sleeve 121 is formed with the lock The tapered outer surface 1211 matched with the tapered surface 115, the other end is formed with an engaging groove 1212 along the circumferential direction on the inner surface; and a core 122, the core 122 is sleeved in the sleeve 121, and the An accommodating space is formed between the outer surface of the core 122 and the inner surface of the sleeve 121 to allow the armor wire of the armored cable 2 to pass through; and, the core 122 is penetrated with a cavity along the axial direction to allow the armor The cable of the cable assembly 2 passes through; and, one end of the core 122 forms a limiting portion 1221 matched with the engaging groove 1212 . The first glue injection cavity 113 and the second glue injection cavity 114 of the load-bearing device of the present invention cooperate with the locking assembly 12 to realize the combination of mechanical locking and casting, effectively improving the armored cable 2 body strength.

As shown in FIG. 3 , preferably, at least one of the locking tapered surface 115 and the tapered outer surface 211 is provided with a connection connecting the first glue injection chamber 113 and the second glue injection chamber 114 . The groove 118 allows glue to pass through when the locking tapered surface 115 and the tapered outer surface 1211 are in tight fit.

Preferably, a plurality of glue filling grooves are arranged at intervals on the inner wall surface of the second glue injection chamber 114 to increase the contact area between the glue and the second glue injection chamber 114 to prevent degumming.

As shown in FIG. 4 , preferably, the locking assembly 12 includes a cylindrical bushing 123 sleeved in the accommodation space between the sleeve 121 and the core 122 , and the cylindrical bushing A spiral through-hole 1231 spirally extending in the axial direction is formed in the cylinder wall of 123, and the spiral manner of the spiral through-hole 1231 is set to be consistent with the spiral manner of the armor wire of the armored cable, so that each layer The winding angle of the steel wire remains unchanged, without damaging the torsional balance design of the armored optical cable body, so that the locking force of different steel wires in the same steel wire layer is the same, so as to ensure that the load-bearing device maintains the body of the steel wire armored optical cable to the greatest extent strength. Preferably, the cylindrical bush 123 is made of wear-resistant material. Preferably, the cylindrical bushing 123 is in a small interference state in the gap between the sleeve 121 and the core 122, and the armored wire of the armored cable passes through the cylindrical bushing 123 After passing through the spiral through hole in the cylinder wall, pressure is applied in the radial direction to squeeze the sleeve 121 , the core 122 and the cylindrical bushing 123 together. Preferably, at least one of the inner surface of the sleeve 121 and the outer surface of the core 122 is provided with saw-tooth-shaped protrusions along the circumferential direction, so as to enhance the bite force after the two are pressed together.

2. Bending protection components

As shown in Fig. 1, Fig. 5, Fig. 6 and Fig. 12, the load-bearing equipment for armored cables also includes a bending protection assembly 3, and the bending protection assembly 3 includes: a tubular protective sheath 31, and the tubular protective sheath 31 is closely arranged with a plurality of annular protrusions 311 along the axial direction, and when the armored cable 2 is bent, the plurality of annular protrusions 311 can interfere with each other to limit the bending of the armored cable 2 degree, preferably, the tubular protective cover 31 and its annular protrusion 311 are made of rubber; The connecting piece 32 is vulcanized as one with the tubular protective sheath 31; the load-bearing device for the armored cable also includes a first connecting piece 116 fixedly connected to the small end of the tapered portion 111, and the first connecting piece 116 is fixedly connected with the third connecting piece 32. Preferably, as shown in FIG. 7 and FIG. Cooperate, and connect and fasten the first connecting piece 116 and the third connecting piece 32 with two half hoops.

3. Swing connection components

As shown in Fig. 1, Fig. 5, Fig. 6, Fig. 9, Fig. 10 and Fig. 11, in order to counteract part of the internal force generated by seawater disturbance and improve connection reliability, the load-bearing equipment for armored cables also includes a swing connection Component 4. The load-bearing device for the armored cable also includes a second connector 117, one end of the second connector 117 is fixedly connected to the end corresponding to the second glue injection cavity 114 of the load-bearing main body 11 (i.e. column shaped part 112 away from the end of the tapered part 111), the other end of the second connecting piece 117 is connected to the swing connection assembly 4; wherein, the swing connection assembly 4 includes a universal joint 41 and a load-bearing connection plate 42 , the two ends of the universal joint 41 respectively hinge the second connecting piece 117 and the load-bearing connecting plate 42 so that the load-bearing connecting plate 42 can perform multiple degrees of freedom relative to the second connecting piece 117 swing.

Preferably, one end of the second connecting piece 117 is configured as a conical rotator structure, and the inner side near the end surface is provided with threads to connect with the load-bearing main body, and the interface at the other end of the second connecting piece 117 is set as Earrings. Preferably, the interfaces at both ends of the universal joint 41 are arranged as single clevises interlaced with each other, and are hinged to the second connecting member 117 through the pin shaft, the cotter nut, and the cotter pin. A spacer is respectively placed on both sides of the single clevis of the universal joint 41 . The interface at one end of the load-bearing connecting plate 42 is set as a double clevis, and is hinged to the universal joint 41 through the pin shaft, the hole nut, and the cotter pin, and the other end of the load-bearing connecting plate 42 is on the same straight line Five through holes are arranged in sequence to serve as interfaces connected with underwater detection equipment. Preferably, the sacrificial anode block is fixed at the position of the ears of the sleeve in a direction parallel to the axial direction of the ears.

Fourth, the assembly process of load-bearing equipment

The following describes the assembly process of the load-bearing equipment for the armored cable of the present invention, wherein the armored cable is a steel wire armored optical cable:

Before installation, disassemble the two half hoops, take off the tubular protective sleeve, and remove the first connecting piece 116 . The second connecting piece 117 is unscrewed, and the second connecting piece 117 maintains a connection relationship with the pin shaft, the gasket, the cotter nut, the cotter pin, the universal joint, the load-bearing connecting plate, and the sacrificial anode block. Pass the steel wire armored optical cable sequentially through the tubular protective sheath, the third connecting piece, the first connecting piece 116, the load-bearing body 11, and the sleeve 121, and protrude for an appropriate distance. Then follow the steps below:

(a) Steel wire armored optical cable

The outer layer steel wire and the inner layer steel wire of the steel wire armored optical cable are stripped a certain distance from the end of the cable, and the optical cable with a rubber sheath inside is passed through the middle of the cylindrical bushing 123 and the core 122 .

(b) Buckle and lock the steel wire

Pass the outer layer and inner layer steel wire of the steel wire armored optical cable through the spiral through hole of the barrel wall of the cylindrical bushing 123, then adjust the distance between the sleeve 121 and the core 122, and place the cylindrical bushing 123 with the steel wire on the sleeve Between the barrel 121 and the core 122. A hydraulic crimping machine is used to crimp the sleeve 121, the cylindrical bushing 123 threaded with steel wires, and the core 122 together to form a locking assembly.

(c) Infusion of resin glue

Tension the locking assembly to the locking tapered surface 115 so that the locking tapered surface 115 fits the tapered outer surface, tighten the first connecting part 116, and use adhesive tape to keep the first connecting part 116 away from One end of the load-bearing main body 11 is tightly wound to prevent the epoxy glue poured afterwards from flowing out. Clamp the load-bearing body 11 on the vise, pour epoxy glue from the opening of the cylindrical part 112 of the load-bearing body 11 (that is, the opening of the second glue injection chamber 114), and the inner circumference of the load-bearing body 11 is uniformly distributed with multiple communication grooves 118 to allow the glue to communicate with the first glue injection chamber 113 and the second glue injection chamber 114 when the locking tapered surface 115 and the tapered outer surface 1211 are tightly fitted. When the cylinder 121 is on the upper surface, stop pouring, and continue to pour cold sulfur glue after the epoxy glue is cured until it is flush with the end surface of the cylindrical part 112 of the load-bearing main body 11, and the filling operation is completed. The pouring of cold flow glue is used to isolate the seawater, protect the load-bearing part steel wires in the load-bearing body 11 from seawater corrosion, and at the same time isolate the poured epoxy resin from the seawater to improve the corrosion resistance. During the process of pouring the glue, the load-bearing main body 11 is continuously tapped to discharge air bubbles in the glue.

(d) Assembly completed

Tear off the adhesive tape wrapped around one end of the first connecting piece 116, connect one end of the third connecting piece 32 to one end of the first connecting piece 116, and tighten the third connecting piece 32 and the first connecting piece 116 with two half hoops. solid. The second connecting piece 117 is fixedly connected to the load-bearing main body 11 to complete the assembly, and the load-bearing device 1 can be used.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention. These simple modifications All belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be described separately.

In addition, various combinations of different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (8)

1. for the load-bearing device of armored cable, it is characterized in that, this load-bearing device (1) comprises: A load-bearing body (11), the load-bearing body (11) includes: A first glue injection chamber (113) and a second glue injection chamber (114) are provided through the axial direction, wherein the second glue injection chamber (114) is at one end close to the first glue injection chamber (113) Forming a locking taper (115), the end of the locking taper (115) close to the first glue injection cavity (113) is set as a small end; and A lock assembly (12), the lock assembly (12) includes coaxially arranged: A sleeve (121), one end of the sleeve (121) is formed with a tapered outer surface (1211) matching the locking tapered surface (115), and the other end is formed with an engaging groove along the circumferential direction on the inner surface (1212); and A core (122), the core (122) is sheathed in the sleeve (121), and an accommodation is formed between the outer surface of the core (122) and the inner surface of the sleeve (121). space to allow the armored wire of the armored cable (2) to pass through; and, the core (122) is penetrated with a cavity along the axial direction to allow the cable of the armored cable (2) to pass through; and, the core One end of (122) forms a limiting portion (1221) matched with the engaging groove (1212). 2. The load-bearing device for armored cables according to claim 1, wherein the load-bearing body (11) comprises a conical portion (111) and a cylindrical portion (112) coaxially arranged, wherein , the large end of the tapered portion (111) is connected to the cylindrical portion (112); and The first glue injection chamber (113) and the second glue injection chamber (114) are respectively located in the tapered portion (111) and the cylindrical portion (112). 3. The load-bearing device for armored cables according to claim 1, characterized in that at least one of the locking tapered surface (115) and the tapered outer surface (1211) is provided with a communicating The communication groove (118) of the first glue injection chamber (113) and the second glue injection chamber (114). 4. The load-bearing device for armored cables according to claim 1, characterized in that, a plurality of glue filling grooves are arranged at intervals on the inner wall surface of the second glue injection cavity (114). 5. The load-bearing device for armored cables according to claim 1, characterized in that at least one of the inner surface of the sleeve (121) and the outer surface of the core (122) is along the circumference Raise towards the setting zigzag. 6. The load-bearing device for armored cables according to claim 1, characterized in that, the locking component (12) comprises a joint sleeved between the sleeve (121) and the core (122). The cylindrical bushing (123) of the accommodating space between, the cylindrical bushing (123) is formed with a spiral through hole (1231) extending spirally in the axial direction, and the spiral through hole (1231) The helical manner is set to be consistent with the helical manner of the armored wire of the armored cable (2). 7. A load-bearing device for armored cables based on the load-bearing device described in claims 1-6, wherein the load-bearing device for armored cables also includes: A bending protection assembly (3), the bending protection assembly (3) comprising: a tubular protective sleeve (31), and a plurality of annular protrusions (311) are closely arranged on the outside of the tubular protective sleeve (31) along the axial direction; and a third connecting piece (32) fixedly arranged at one end of the tubular protective sleeve (31); The load-bearing device is fixedly connected to the third connecting member (32) through a first connecting piece (116), wherein the first connecting piece (116) is fixedly connected to the bearing main body (11) and the The corresponding end of the first glue injection cavity (113). 8. The load-bearing device for armored cables according to claim 7, characterized in that, the load-bearing device for armored cables also includes a second connector (117), the second connector (117) One end is fixedly connected to the corresponding end of the load-bearing main body (11) and the second glue injection chamber (114), and the other end is connected to the swing connection assembly (4); wherein, The swing connection assembly (4) includes a universal joint (41) and a load-bearing connecting plate (42), and the two ends of the universal joint (41) are respectively hinged to the second connecting member (117) and The load-bearing connecting plate (42) is configured so that the load-bearing connecting plate (42) can swing with multiple degrees of freedom relative to the second connecting piece (117).

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