CN111725768B

CN111725768B - Composite material cable protection pipe and preparation method thereof

Info

Publication number: CN111725768B
Application number: CN202010647798.4A
Authority: CN
Inventors: 刘清华; 刘庆
Original assignee: Ganzhou Aoxin New Building Materials Co Ltd
Current assignee: Ganzhou Aoxin New Building Materials Co Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-09-14
Anticipated expiration: 2040-07-07
Also published as: CN111725768A

Abstract

The invention provides a composite material cable protection pipe which comprises a matrix, wherein a cable pipe hole is formed in the matrix, and a lining sleeve is arranged in the cable pipe hole; the basal body consists of a shell and an inner core, the inner core is arranged in the shell, and the cable pipe hole is arranged in the inner core; the shell is provided with a front end face, a rear end face, a left end face, a right end face, a lower end face and an upper end face; the front end surface and the rear end surface are both provided with positioning joints; a sleeve male head is arranged at the position of a cable pipe hole on the front end surface, and a concave hole female head matched with the sleeve male head is arranged at the position, corresponding to the cable pipe hole, on the rear end surface; the left end face and the right end face are provided with draft angles; the intersection line of the upper end face and the left end face and the right end face is provided with a fillet. The invention also provides a die and a method for manufacturing the composite material cable protection pipe. The cable protection pipe is light in weight, strong in cable protection, easy to operate in the manufacturing method and capable of greatly improving the safety of the underground cable.

Description

Composite material cable protection pipe and preparation method thereof

Technical Field

The invention relates to a cable protection pipe, in particular to a composite material cable protection pipe, a preparation method thereof and a mold for manufacturing the composite material cable protection pipe.

Background

The cable protection tube prefabricated member is widely applied to underground laying of communication and power cables due to small construction difficulty, high mechanical strength, low construction cost and easy maintenance and management. Due to the manufacturing process and other reasons, the whole existing cable protection pipe is formed by pouring reinforced concrete, so that the existing cable protection pipe is heavy and inconvenient to transport and lay. The existing cable protection pipe body is not provided with a drawing die inclination and a fillet, and is not beneficial to demoulding. And no warning information for prompting 'cable exists below' is provided on the tube body of the existing cable protection tube, so that the existing cable protection tube is easy to be damaged due to mistaken digging. In addition, when a plurality of existing cable protection pipes are connected into an underground pipeline, because the existing cable protection pipes are only provided with mortise and tenon joints for butt joint of the pipes, accurate butt joint of each cable pipe hole at the pipe body connecting part cannot be guaranteed, and small dislocation is easy to occur between the pipe holes of two adjacent cable protection pipes, so that the cables in the pipe holes are easily scratched by the edges of hard pipe holes at the dislocated parts, and safety accidents are caused.

Disclosure of Invention

According to the reasons of the manufacturing process and the like, the whole existing cable protection pipe is formed by pouring reinforced concrete, so that the existing cable protection pipe is heavy and inconvenient to transport and lay; the existing cable protection pipe body does not have any warning information for prompting that a cable is laid down and excavation is strictly forbidden, so that the cable pipe is easy to damage due to mistaken excavation; when a plurality of existing cable protection pipes are connected into an underground pipeline, the existing cable protection pipes are only provided with mortise and tenon joints for pipe body butt joint, and accurate butt joint of each cable pipe hole at a pipe body connecting part cannot be guaranteed, so that small dislocation is easy to occur between pipe holes of two adjacent cable protection pipes, and therefore cables in the pipe holes are easy to scratch at the edges of hard pipe holes at the dislocated positions, and safety accidents are caused. The invention mainly utilizes the inner core made of light material and the shell made of high-strength material, thereby reducing the net weight of the whole cable protection pipe, reducing the transportation cost and simplifying the hoisting and installation procedures while ensuring the strength; the cable protection pipes are connected through the combined porous joints, so that the cable protection pipes can be accurately butted when being installed, meanwhile, the inner lining sleeves of different cable protection pipes are ensured to be stably excessive at the joints, the situation that cables in the cable pipe holes are scratched by hard edges of the pipe holes when the cables penetrate through the joints of the cable protection pipes due to micro dislocation of the pipe holes of the cables at the joints is prevented, obvious warning information of 'cable is arranged below and excavation is strictly forbidden' is engraved on the pipe bodies of the cable protection pipes, and the cable protection pipes can be effectively prevented from being dug by mistake; the body of the cable protection pipe is provided with a drawing slope and a fillet, so that the demoulding of the cable protection pipe in the manufacturing process is facilitated.

The technical means adopted by the invention are as follows:

a composite cable protection tube comprising: the cable tube comprises a base body, wherein cable tube holes with different apertures and variable numbers are arranged in the base body, and lining sleeves are arranged in the cable tube holes; the base body consists of an outer shell and an inner core, the outer shell is a closed structure body, the inner core is arranged in the outer shell and is in contact with the inner wall of the outer shell, and the cable pipe hole is arranged in the inner core;

the shell is provided with a front end face, a rear end face, a left end face, a right end face, a lower end face and an upper end face;

the outer edges of the front end face and the rear end face are respectively provided with a positioning joint, namely a first positioning joint arranged on the front end face and a second positioning joint arranged on the rear end face, and the first positioning joint and the second positioning joint are connected in a matched mode and used for mounting and positioning the two cable protection pipes;

the left end face and the right end face are provided with draft angles; the intersection line of the upper end face and the left end face and the right end face is provided with a fillet;

the positioning joint is a socket joint or a tongue-and-groove joint;

a convex sleeve male head is arranged at each cable pipe hole position of the front end face, a concave hole female head matched with the sleeve male head is arranged at the position, corresponding to the cable pipe hole, of the rear end face, and the lining sleeve, the sleeve male head and the concave hole female head are coaxial with the cable pipe holes; the lining sleeve and the male head of the sleeve have the same inner diameter.

Furthermore, at least one of the left end face, the right end face, the lower end face and the upper end face is engraved with nameplate information, and the nameplate information comprises text prompt information of 'cable excavation forbidden under the condition of the lower cable', or a trademark, or a product model, or a manufacturer contact way.

Further, the shell is made of a high-strength material, and the high-strength material is ultra-high performance concrete or fiber concrete; the inner core is made of lightweight materials, and the lightweight materials are foamed lightweight soil, or honeycomb fillers, or foamed plastic particles mixed lightweight soil.

Furthermore, two sections are the same type the back is connected to the combined material cable protection pipe, on the shell first location joint with second location joint, each the cable tube hole the public head of sleeve pipe with female the head of shrinkage pool docks simultaneously, realizes right the multiple protection of cable in the cable tube hole.

Furthermore, a reinforcing mesh is placed inside the shell of the shell; the reinforcing mesh consists of a plane reinforcing mesh and a U-shaped reinforcing mesh; the planar reinforcing mesh is placed in the shell corresponding to the lower end face; the U-shaped steel bar net is arranged inside the shell corresponding to the left end face, the right end face and the upper end face.

The invention also provides a die for manufacturing the composite material cable protection pipe, which is characterized by comprising an outer die, a die core, a transition male head, a transition female head, a cushion block and a fixing plate;

the mold core is arranged in the outer mold, the transition male head is arranged between one side of the outer mold and the mold core, and the transition female head is arranged between the other side of the outer mold and the mold core;

the cushion blocks are arranged between the lining sleeve and the shell at the bottommost layer and between two adjacent layers of lining sleeves and used for preventing the lining sleeves from being bent or broken greatly under the action of self gravity or buoyancy;

the cushion block is prism or cylinder in appearance;

the fixing plate is a plate with a concave middle part, and screw holes I for mounting and fixing are formed in two ends of the fixing plate; the fixing plates are installed on the edges of two sides of the main body mould of the outer mould through the screw holes I, so that the lining sleeve is prevented from being bent upwards due to buoyancy and broken in the preparation process.

Further, the outer die consists of a front end die, a main body die and a rear end die; the front end die is used for casting and molding the front end face, and the shape and the size of the front end die are consistent with those of the front end face; the rear end die is used for casting and molding the rear end face, and the shape and the size of the rear end die are consistent with those of the rear end face; the main body die is used for casting and molding the left end face, the right end face and the upper end face, and the shape and the size of the main body die are consistent with those of a curved surface formed by the left end face, the right end face and the upper end face;

the inner surface of the outer die is used for casting and molding the front end surface, the rear end surface, the left end surface, the right end surface and the upper end surface, so that the shape and the structural size of the inner surface of the outer die are the same as those of a curved surface formed by the front end surface, the rear end surface, the left end surface, the right end surface and the upper end surface;

the outer surface of the outer die is provided with a plurality of reinforcing ribs, and the reinforcing ribs are transverse reinforcing ribs or longitudinal reinforcing ribs;

the edges of the front end and the rear end of the main body die are respectively provided with a screw hole connected with the front end die and the rear end die; the edges of the left side and the right side of the main body mould are provided with a plurality of outer mould positioning holes for positioning connection with the mould cores;

the main body model is formed by an integral template or a plurality of detachable templates in a splicing way.

Further, the mold core comprises a front guide surface, a rear guide surface, a left guide surface, a right guide surface, a bottom guide surface and a plurality of support rib plates, the support rib plates are arranged inside the mold core and fixedly connected with the inner wall of the mold core, and the front guide surface, the rear guide surface, the left guide surface, the right guide surface and the bottom guide surface are respectively matched with the front end surface, the rear end surface, the left end surface, the right end surface and the upper end surface in shape;

mold core positioning holes used for being connected with the outer mold and positioning are formed in the edges of the left guide surface and the right guide surface;

the supporting rib plates are transverse reinforcing rib plates or longitudinal reinforcing rib plates;

the mold core is formed by an integral template or a plurality of detachable templates in a splicing way;

further, the transition male head is integrally cylindrical, and the shape and the size of the outer surface of the transition male head are consistent with those of the outer surface of the sleeve male head, so that a round hole embedded in the sleeve male head is formed in the shell;

the transition male head is arranged between the assembled front end die and the front guide surface of the die core, and the position of the transition male head is limited by the pipe hole on the front end die and the front guide surface;

the transition female head is integrally in a circular truncated cone shape, and the outer surface of the transition female head is the same as the female head of the concave hole in size so as to form the female head of the concave hole in the shell;

the transition female head is arranged between the assembled rear end die and the rear guide surface of the die core, and the position of the transition female head is limited by the pipe hole in the rear end die and the rear guide surface.

The invention also provides a preparation method of the composite material cable protection pipe, which comprises the following steps:

step one, assembling a front end die, a main body die and a rear end die of the outer die;

secondly, placing the U-shaped steel bar net inside the outer die;

thirdly, the mold core is arranged in the outer mold and is fixedly connected with the positioning hole of the mold core through the positioning hole of the outer mold, so that the relative position of the mold core and the outer mold is limited;

fourthly, mounting the transition male head and the transition female head between the outer die and the die core;

fifthly, casting a shell-shaped space between the outer mold and the mold core by using a high-strength material, taking out the mold core after the high-strength material is solidified to form the shell, and placing the lining sleeve and the sleeve male head into the cable duct hole;

sixthly, placing the cushion block between the inner lining sleeve at the bottommost layer and the shell, placing the cushion block between two adjacent layers of inner lining sleeves, and installing the fixing plate on the outer die;

seventhly, pouring or placing a light material into the shell, wherein the pouring height or the placing height of the light material needs to exceed all the lining sleeves to form the inner core, and waiting for the inner core to be solidified;

and step eight, after the inner core is solidified, detaching the fixing plate, placing the planar reinforcing mesh on the upper surface of the inner core, and sealing and covering the lower end face by using a high-strength material to form the complete composite material cable protection pipe.

Compared with the prior art, the invention has the following advantages:

1. the composite material cable protection pipe, the preparation method thereof and the mould for manufacturing the composite material cable protection pipe are easy to operate, and the safety of underground cables can be greatly improved.

2. The composite material cable protection pipe, the preparation method thereof and the die for manufacturing the composite material cable protection pipe are light in weight, have the inner core made of light materials and the shell made of high-strength materials, can reduce the net weight of the whole cable protection pipe while ensuring the strength, and have lighter weight compared with the existing cable protection pipe, thereby reducing the transportation cost and simplifying the hoisting and installation procedures.

3. According to the composite material cable protection pipe, the preparation method thereof and the die for manufacturing the composite material cable protection pipe, a plurality of cable protection pipes are connected through the combined porous joint, so that on one hand, accurate butt joint of the cable protection pipes during installation can be guaranteed, and meanwhile, stable transition of inner lining sleeves of different cable protection pipes at joints is guaranteed, and the cables in the cable pipe holes are prevented from being scratched by hard edges of the pipe holes when the cables penetrate through the joints of the cable protection pipes due to micro dislocation of the cable pipe holes at the joints.

4. According to the composite material cable protection pipe, the preparation method thereof and the die for manufacturing the composite material cable protection pipe, warning information for prompting that a cable exists is engraved on the pipe body of the cable protection pipe, so that the cable protection pipe can be effectively prevented from being dug by mistake.

5. According to the composite material cable protection pipe, the preparation method thereof and the die for manufacturing the composite material cable protection pipe, the drawing slope and the fillet are arranged on the pipe body of the cable protection pipe, so that the demoulding of the cable protection pipe can be facilitated, and the preparation of the cable protection pipe is facilitated.

In conclusion, the technical scheme of the invention can solve the problems that the existing cable protection pipe is integrally formed by pouring reinforced concrete due to the manufacturing process and the like in the prior art, so that the existing cable protection pipe is heavy and inconvenient to transport and lay; the existing cable protection pipe body does not have any warning information for prompting that a cable is laid down and excavation is strictly forbidden, so that the cable pipe is easy to damage due to mistaken excavation; in addition, the tube body of the conventional cable protection tube is not provided with a drawing slope and a fillet, so that the cable protection tube is difficult to demould and has high defective rate in the preparation process; in addition, when a plurality of existing cable protection pipes are connected into an underground pipeline, because the existing cable protection pipes are only provided with mortise and tenon joints for butt joint of the pipes, accurate butt joint of each cable pipe hole at the pipe body connecting part cannot be guaranteed, and small dislocation is easy to occur between the pipe holes of two adjacent cable protection pipes, so that the cables in the pipe holes are easily scratched by the edges of hard pipe holes at the dislocated parts, and safety accidents are caused.

For the reasons, the invention can be widely popularized in the fields of communication or power cable laying and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a composite cable protection tube according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Fig. 3 is a schematic structural view of a combined porous joint of a composite cable protection pipe according to an embodiment of the present invention.

Fig. 4 is a structural view of a reinforcing mesh inside a composite cable protection tube according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of an outer mold for manufacturing a composite cable protection pipe according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a mold core for manufacturing a cable protection tube according to an embodiment of the present invention.

Fig. 7 is a diagram showing the placement of U-shaped reinforcing meshes in the embodiment of the present invention.

Fig. 8 is a schematic view illustrating installation of an outer mold and a mold core for manufacturing a cable protection tube according to an embodiment of the present invention.

Fig. 9 is a schematic view illustrating a structure and an installation position of a transition joint for manufacturing a cable protection pipe according to an embodiment of the present invention.

Fig. 10 is a schematic view illustrating installation of a fixing plate for manufacturing a cable protection pipe according to an embodiment of the present invention.

Fig. 11 is a schematic view showing the placement of spacers for manufacturing a cable protection tube according to an embodiment of the present invention.

Fig. 12 is a diagram showing the placement of planar reinforcing mats according to the embodiment of the present invention.

In the figure: 1. a housing; 11. a front end face; 12. a rear end face; 13. a left end face; 14. a right end face; 15. a lower end face; 16. an upper end surface; 2. an inner core; 21. a transition male head; 22. a transition female head; 3. positioning the joint; 4. a cable tube hole; 41. a liner sleeve; 42. a sleeve male head; 43. female head of concave hole; 44. cushion blocks; 45. a fixing plate; 5. round corners; 6. nameplate information; 71. a planar reinforcing mesh; 72. a U-shaped steel bar net; 8. an outer mold; 81. a front end die; 82. a main body model; 83. a back end die; 84. reinforcing ribs; 85. a screw hole; 86. positioning holes of the outer mold; 9. a mold core; 91. a front guide surface; 92. a rear guide surface; 93. a left guide surface; 94. a right guide surface; 95. a bottom guide surface; 96. supporting the rib plate; 97. a mold core positioning hole;

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 4, the present invention provides a composite cable protection tube, including: the cable tube comprises a base body, wherein cable tube holes 4 with different apertures and variable numbers are arranged in the base body, and lining sleeves 41 and sleeve male heads 42 are arranged in the cable tube holes 4; the basal body consists of an outer shell 1 and an inner core 2, the outer shell 1 is a closed structure, the inner core 2 is arranged in the outer shell 1 and is in contact with the inner wall of the outer shell 1, and the cable tube hole 4 is arranged in the inner core 2; the shell 1 is made of a high-strength material, the inner core 2 is made of a light material, the high-strength material is ultra-high-performance concrete or fiber concrete, and the light material is foamed light soil or honeycomb filler or foamed plastic particle mixed light soil.

The size and the number of the apertures of the cable tube holes 4 are determined according to actual working conditions.

The cable duct holes 4 typically vary in length from 1 to 12 metres, the maximum length depending on the maximum loading length allowed for the truck and the maximum length allowed for the lifting installation.

The shell 1 is provided with a front end face 11, a rear end face 12, a left end face 13, a right end face 14, a lower end face 15 and an upper end face 16; the left end face 13 and the right end face 14 are provided with draft angles; and the intersection line of the upper end surface 16 and the left end surface 13 and the right end surface 14 is provided with a fillet 5, so that the demoulding is facilitated.

The outer surface of the shell is engraved with nameplate information 6, wherein the nameplate information 6 comprises but is not limited to text prompt information such as 'cable excavation is strictly prohibited' and the like, and can also be a trademark, a product model, a manufacturer contact way or other displayable contents; the nameplate information 6 may be engraved on any one or more of the left end face 13, the right end face 14, the lower end face 15, and the upper end face 16.

The cable pipe holes 4 are arranged between the lower end face 15 and the upper end face 16 in a layered mode, and the cable pipe holes arranged on the same layer or the same height have the same or similar hole diameters; for the determined number of cable holes, firstly, arranging a large number of cable holes with larger apertures, distributing the number of the cable holes with larger number and larger apertures in each layer to enable the number of the cable holes in each layer of the cable holes to be larger than 1 and equal as much as possible, if the number of the cable holes in each layer of the cable holes with larger number and larger apertures cannot be distributed to be equal, enabling the number of the cable holes in each layer of the cable holes with larger number and larger apertures to be gradually decreased from the lower end surface 15 to the upper end surface 16, and finally, placing the cable holes with smaller apertures between two adjacent cable holes with larger apertures.

The outer edges of the front end face 11 and the rear end face 12 are respectively provided with a positioning joint 3 which is respectively a first positioning joint arranged on the front end face 11 and a second positioning joint arranged on the rear end face 12, and the first positioning joint and the second positioning joint are connected in a matched mode and used for mounting and positioning the cable protection pipes.

The positioning joint 3 is a socket joint or a tongue-and-groove joint.

A convex sleeve male head 42 is arranged at the position of the cable tube hole 4 of the front end surface 11, and a concave hole female head 43 matched with the sleeve male head 42 is arranged at the position of the rear end surface 12 corresponding to the cable tube hole 4.

Each cable tube hole 4 is coaxial with the corresponding lining sleeve 41, the sleeve male head 42 and the concave hole female head 43; the sleeve male end 42 has the same inner diameter as the inner liner sleeve 41; two sections are the same type the back is connected to the combined material cable protection pipe, on shell (1) first registration joint with second registration joint, each cable tube hole (4) public head of sleeve pipe (42) with female head of shrinkage pool (43) dock simultaneously, realize right the multiple protection of cable in cable tube hole (4).

A reinforcing mesh is arranged in the shell of the shell 1, so as to increase the strength of the shell 1; the reinforcing mesh consists of a plane reinforcing mesh 71 and a U-shaped reinforcing mesh 72; the planar mesh reinforcement 71 is placed inside the casing corresponding to the lower end face 15, as shown in fig. 12; the U-shaped steel bar mesh 72 is placed inside the shell corresponding to the left end face 13, the right end face 14 and the upper end face 16.

As shown in fig. 5 to 12, the present invention further provides a mold for manufacturing a composite cable protection tube, which comprises an outer mold 8, a mold core 9, a transition male head 21, a transition female head 22, a spacer 44 and a fixing plate 45. The mold core 9 is arranged in the outer mold (8), the transition male head (21) is arranged between one side of the outer mold 8 and the mold core 9, and the transition female head 22 is arranged between the other side of the outer mold 8 and the mold core 9.

The outer die 8 consists of a front end die 81, a main body die 82 and a rear end die 83; the front end die 81 is used for casting and molding the front end face 11, and the shape and the size of the front end die are consistent with those of the front end face 11; the rear end die 83 is used for casting and molding the rear end face 12, and the shape and the size of the rear end die are consistent with those of the rear end face 12; the main body die 82 is used for casting and forming the left end face 13, the right end face 14 and the upper end face 16, and the shape and the size of the main body die 82 are consistent with a curved surface formed by the left end face 13, the right end face 14 and the upper end face 16.

The inner surface of the outer mold 8 is used for casting and molding the front end surface 11, the rear end surface 12, the left end surface 13, the right end surface 14 and the upper end surface 16, so that the shape and the structural size of the inner surface of the outer mold 8 are the same as those of a curved surface formed by the front end surface 11, the rear end surface 12, the left end surface 13, the right end surface 14 and the upper end surface 16.

The outer surface of the outer mould 8 is provided with a plurality of reinforcing ribs 84 for the purpose of increasing the overall strength of the outer mould 8, the reinforcing ribs 84 being in the form of transverse reinforcing ribs or longitudinal reinforcing ribs.

The edges of the front end and the rear end of the main body die 82 are respectively provided with a screw hole 85 connected with the front end die 81 and the rear end die 83; the edges of the left side and the right side of the main body mould 82 are provided with a plurality of outer mould positioning holes 86 for positioning connection with the mould core 9.

The main body model 82 can be formed by an integral template or by splicing a plurality of small detachable templates.

The mold core 9 comprises a front guide surface 91, a rear guide surface 92, a left guide surface 93, a right guide surface 94, a bottom guide surface 95 and a plurality of support rib plates 96, the support rib plates 96 are arranged inside the mold core 9, the support rib plates 96 are fixedly connected with the inner wall of the mold core 9, and the front guide surface 91, the rear guide surface 92, the left guide surface 93, the right guide surface 94 and the bottom guide surface 95 are respectively matched with the front end surface 11, the rear end surface 12, the left end surface 13, the right end surface 14 and the upper end surface 16 in shape.

The edges of the left guide surface 93 and the right guide surface 94 of the mold core 9 are provided with mold core positioning holes 97 for connecting and positioning with an external mold.

The support rib 96 functions to increase the strength of the mold core 9, and has both a transverse reinforcing rib and a longitudinal reinforcing rib.

The mold core 9 can be formed by an integral mold plate or by splicing a plurality of small detachable mold plates.

The transition male 21 is generally cylindrical and has an outer surface conforming in shape and size to the outer surface of the sleeve male 42, with the purpose of forming a circular hole in the housing 1 into which the sleeve male 42 can be inserted.

The transition male head 21 is installed between the assembled front end die 81 and the front guide surface 91 of the die core 9, and the position of the transition male head 21 is defined by the pipe hole on the front end die 81 and the front guide surface 91.

The transition female head 22 is integrally in a truncated cone shape, and the outer surface of the transition female head is the same as the female concave hole head 43 in size, so that the female concave hole head 43 is formed inside the shell 1.

The transition female head 22 is installed between the assembled rear end die 83 and the rear guide surface 92 of the die core 9, and the position of the transition female head 22 is defined by the pipe hole on the rear end die 83 and the rear guide surface 92.

The spacers 44 are disposed between the bottom inner bushing 41 and the outer shell 1 and between two adjacent layers of inner bushings 41, and are used for preventing the inner bushing 41 from bending or breaking greatly under the action of self gravity or buoyancy.

The pads 44 are prismatic or cylindrical in appearance.

The fixing plate 45 is a plate with a concave middle part, and screw holes I for mounting and fixing are arranged at two ends of the fixing plate.

The fixing plates 45 are mounted on both side edges of the main body mold (82) through screw holes i for the purpose of preventing the inner liner 41 from being broken due to upward bending by buoyancy during the manufacturing process.

step one, assembling a front end die 81, a main body die 82 and a rear end die 83 of the outer die 8;

step two, placing the U-shaped steel bar mesh 72 inside the outer die 8;

thirdly, the mold core 9 is arranged inside the outer mold 8 and is fixedly connected with the mold core positioning hole 97 through the outer mold positioning hole 86, so that the relative position of the mold core 9 and the outer mold 8 is limited;

fourthly, installing the transition male head 21 and the transition female head 22 between the outer die 8 and the die core 9;

fifthly, casting a shell-shaped space between the outer mold 8 and the mold core 9 by using a high-strength material, taking out the mold core 9 after the high-strength material is solidified to form the shell 1, and placing the lining sleeve 41 and the sleeve male head 42 in the cable tube hole 4;

sixthly, placing the cushion block 44 between the inner bushing 41 at the bottommost layer and the shell 1, placing the cushion block 44 between the two adjacent layers of inner bushings 41, and installing the fixing plate 45 on the outer die 8;

seventhly, pouring or placing a light material into the shell 1, wherein the pouring height or the placing height of the light material needs to exceed all the lining sleeves 41 to form the inner core 2, and waiting for the inner core 2 to be solidified;

and step eight, after the inner core 2 is solidified, detaching the fixing plate 45, placing a planar reinforcing mesh 71 on the upper surface of the inner core, and sealing and covering the lower end face 15 by using a high-strength material to form the complete cable protection pipe.

Example 1

As shown in fig. 1-2, in this embodiment, the composite cable protection tube provided by the present invention includes a substrate and an inner liner 41, the substrate includes a shell 1 and an inner core 2, cable tube holes 4 with different diameters are not completely equal and are not in definite quantity are provided in the substrate, the inner liner 41 and a male sleeve 42 are provided in the cable tube holes 4, the cable tube holes 4 have two sizes, four adjacent cable tube holes 4 with large sizes are provided at equal intervals, a small-sized cable tube hole 4 is provided at the center position of four adjacent cable tube holes 4 with large sizes, three layers of cable tube holes 4 are provided in this embodiment, the upper layer and the lower layer are the cable tube holes 4 with large sizes, and the middle layer is the cable tube hole 4 with small sizes. The outer shell 1 is a closed structure body, and the inner core 2 is arranged inside the outer shell 1 and is in contact with the inner wall of the outer shell 1. The outer shell 1 is made of a high-strength material, which is ultra-high performance concrete, and the inner core 2 is made of a light material, which is foamed lightweight soil. The outer shell 1 is prism-shaped, and the outer shell 1 is provided with a front end face 11, a rear end face 12, a left end face 13, a right end face 14, a lower end face 15 and an upper end face 16. The edges of the front end surface 11 and the rear end surface 12 are respectively provided with a positioning joint 3 for installing and positioning two cable protection pipe bodies, and the positioning joints 3 are socket joints. The left end face 13 and the right end face 14 are provided with draft angles, and the intersection line of the upper end face 16 and the left end face 13 and the right end face 14 is provided with a fillet 5. The outer surface of the shell 1 is engraved with nameplate information 6, and the nameplate information 6 is character prompt information of 'cable excavation is strictly forbidden' below the nameplate information. The nameplate information 6 is engraved on the upper face 16. Each cable tube hole 4 position on the preceding terminal surface 11 all is equipped with one section convex sleeve pipe public head 42, and the internal diameter of convex sleeve pipe public head 42 is unanimous with interior bushing pipe 41's internal diameter, and the cable tube hole position corresponding with preceding terminal surface 11 on the rear end face 12 is equipped with the female head 43 of shrinkage pool with convex sleeve pipe public head 42 matched with, realizes that every cable tube hole on two cable protection pipes connects. A steel bar mesh is arranged in the shell of the shell 1, the steel bar mesh is composed of a plane steel bar mesh 71 and a U-shaped steel bar mesh 72, and the plane steel bar mesh 71 is arranged in the shell corresponding to the lower end face 15, as shown in fig. 12; the U-shaped steel bar mesh 72 is placed inside the shell corresponding to the left end surface 13, the right end surface 14 and the upper end surface 16.

The mold for manufacturing the composite cable protection tube in this embodiment includes an external mold 8, a mold core 9, a transition male head 21, a transition female head 22, a cushion block 44 and a fixing plate 45, as shown in fig. 5 to 11, the external mold 8 is composed of a front end mold 81, a main body mold 82 and a rear end mold 83. The outer surface of the outer mold 8 is provided with a plurality of reinforcing ribs 84, and the edges of the front and rear ends of the main body mold 82 are respectively provided with screw holes 85 connected with the front end mold 81 and the rear end mold 83. The edges of the left side and the right side of the main body die 82 are provided with a plurality of outer die positioning holes 86 for positioning connection with the die cores. The mold core 9 comprises a front guide surface 91, a rear guide surface 92, a left guide surface 93, a right guide surface 94, a bottom guide surface 95 and a plurality of support rib plates 96. The supporting rib plate 96 is arranged inside the mold core 9, and the supporting rib plate 96 is fixedly connected with the inner wall of the mold core 9. The front guide surface 91, the rear guide surface 92, the left guide surface 93, the right guide surface 94 and the bottom guide surface 95 are similar in shape to the front end surface 11, the rear end surface 12, the left end surface 13, the right end surface 14 and the upper end surface 16, respectively. The edges of the left guide surface 93 and the right guide surface 94 of the mold core 9 are provided with mold core positioning holes 97 for connecting and positioning with the outer mold 8. The transition male 21 is generally cylindrical and has an outer surface conforming in shape and size to the outer surface of the sleeve male 42. The transition male head 21 is installed between the assembled front end die 81 and the front guide surface 91 of the die core 9, and the position of the transition male head 21 is defined by the pipe hole on the front end die 81 and the front guide surface 91. The transition female head 22 is integrally in a truncated cone shape, the outer surface of the transition female head is the same as the size of the concave hole female head 43, the transition female head 22 is installed between the assembled rear end die 83 and the rear guide surface 92 of the die core 9, and the position of the transition female head 22 is limited by the pipe hole on the rear end die 83 and the rear guide surface 92. As shown in fig. 11, a plurality of cushion blocks are arranged between the inner bushing 41 at the bottommost layer and the outer shell 1 and between two adjacent layers of inner bushings 41 to prevent the inner bushing 41 from bending or breaking greatly under the action of self gravity or buoyancy in the preparation process; the fixing plate 45 is installed on the outer mold 8 through a screw hole to prevent the inner liner 41 from being broken by being bent upward due to buoyancy during the manufacturing process.

The preparation method of the composite material cable protection tube in the embodiment comprises the following steps: firstly, assembling a front end die 81, a main body die 82 and a rear end die 83 of an outer die 8 (shown in FIG. 5); placing a U-shaped web of steel reinforcement 72 inside the outer mould 8 (as shown in figure 7); the mold core 9 is arranged inside the outer mold 8 and is fixedly connected with the mold core positioning hole 97 through the outer mold positioning hole 86, so that the relative position of the mold core 9 and the outer mold 8 is defined (shown in fig. 8); installing a transition male head 21 and a transition female head 22 between the outer die 8 and the die core 9 (as shown in fig. 9); pouring a shell-shaped space between the outer mold 8 and the mold core 9 by using a high-strength material, taking out the mold core 9 after the high-strength material is solidified to form the shell 1, and placing the lining sleeve 41 and the sleeve male head 42 in the cable tube hole 4 (as shown in fig. 10); a cushion block 44 is arranged between the inner bushing 41 at the bottommost layer and the shell 1, the cushion block 44 is arranged between the inner bushing 41 at two adjacent layers, and the fixing plate 45 is arranged on the outer die 8; pouring or placing a light material into the shell 1, wherein the pouring height of the light material needs to exceed all the lining sleeves 41 to form the inner core 2, and waiting for the inner core 2 to be solidified; after the core 2 is solidified, the fixing plate 45 is removed, a planar reinforcing mesh 71 (shown in fig. 12) is placed on the upper surface of the core, and the lower end surface 15 is sealed and covered with a high-strength material to form a complete cable protection pipe.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite cable protection tube, comprising: the cable tube comprises a base body, wherein cable tube holes (4) which are not equal in hole diameter and variable in number are formed in the base body, and lining sleeves (41) are arranged in the cable tube holes (4); the base body consists of an outer shell (1) and an inner core (2), the outer shell (1) is a closed structure body, the inner core (2) is arranged in the outer shell (1) and is in contact with the inner wall of the outer shell (1), and the cable pipe hole (4) is arranged in the inner core (2);

the shell (1) is provided with a front end face (11), a rear end face (12), a left end face (13), a right end face (14), a lower end face (15) and an upper end face (16);

the outer edges of the front end face (11) and the rear end face (12) are respectively provided with a positioning joint (3), namely a first positioning joint arranged on the front end face (11) and a second positioning joint arranged on the rear end face (12), and the first positioning joint and the second positioning joint are connected in a matched mode and used for mounting and positioning the two cable protection pipes;

the left end face (13) and the right end face (14) are provided with draft angles; the intersection line of the upper end face (16) and the left end face (13) and the right end face (14) is provided with a fillet (5);

the positioning joint (3) is a socket joint or a tongue-and-groove joint;

a section of convex sleeve male head (42) is arranged at each cable pipe hole (4) of the front end surface (11), a concave hole female head (43) matched with the sleeve male head (42) is arranged at the position, corresponding to the cable pipe hole (4), of the rear end surface (12), and the lining sleeve (41), the sleeve male head (42) and the concave hole female head (43) are coaxial with the cable pipe hole (4); the lining sleeve (41) and the sleeve male head (42) have the same inner diameter; the female head (43) of the concave hole is of a conical surface horn-shaped structure;

the composite material cable protection pipe is made of a mold, and the mold comprises an outer mold (8), a mold core (9), a transition male head (21), a transition female head (22), a cushion block (44) and a fixing plate (45);

the mold core (9) is arranged in the outer mold (8), the transition male head (21) is arranged between one side of the outer mold (8) and the mold core (9), and the transition female head (22) is arranged between the other side of the outer mold (8) and the mold core (9);

the cushion blocks (44) are placed between the bottommost lining sleeve (41) and the outer shell (1) and between two adjacent layers of lining sleeves (41) and used for preventing the lining sleeves (41) from being bent or broken greatly under the action of self gravity or buoyancy;

the cushion block (44) is prism or cylinder in appearance;

the fixing plate (45) is a plate with a concave middle part, and screw holes I for mounting and fixing are formed in two ends of the fixing plate; the fixing plates (45) are mounted on the edges of two sides of a main body mould (82) of the outer mould (8) through the screw holes I so as to prevent the lining sleeve (41) from being bent upwards due to buoyancy and broken in the preparation process.

2. The composite cable protection tube according to claim 1, wherein at least one of the left end face (13), the right end face (14), the lower end face (15) and the upper end face (16) is engraved with nameplate information (6) including a text prompt of "cable excavation is prohibited" or a trademark or a product model or a manufacturer contact.

3. The composite cable protection tube according to claim 1 or 2, wherein the outer shell (1) is made of a high-strength material, which is ultra-high performance concrete; the inner core (2) is made of light materials, and the light materials are foamed light soil or honeycomb fillers.

4. The composite cable protection tube according to claim 3, wherein after two sections of the same type of composite cable protection tube are connected, the first positioning connector and the second positioning connector on the housing (1), and the sleeve male head (42) and the female head (43) of the concave hole of each cable duct hole (4) are simultaneously butted, so that multiple protection of cables in the cable duct holes (4) is realized.

5. The composite cable protection tube according to claim 4, wherein inside the casing of the casing (1) a mesh of steel reinforcement is placed; the reinforcing mesh consists of a plane reinforcing mesh (71) and a U-shaped reinforcing mesh (72); the planar reinforcing mesh (71) is placed in the shell corresponding to the lower end face (15); the U-shaped steel bar net (72) is placed inside the shell corresponding to the left end face (13), the right end face (14) and the upper end face (16).

6. The composite cable protection tube according to claim 1, wherein the outer mold (8) is composed of a front end mold (81), a main body mold (82), and a rear end mold (83); the front end die (81) is used for casting and molding the front end face (11), and the shape and the size of the front end die are consistent with those of the front end face (11); the rear end die (83) is used for casting and molding the rear end face (12), and the shape and the size of the rear end die are consistent with those of the rear end face (12); the main body mould (82) is used for casting and molding the left end face (13), the right end face (14) and the upper end face (16), and the shape and the size of the main body mould are consistent with those of a curved surface formed by the left end face (13), the right end face (14) and the upper end face (16);

the inner surface of the outer die (8) is used for casting and molding the front end surface (11), the rear end surface (12), the left end surface (13), the right end surface (14) and the upper end surface (16), so that the shape and the structural size of the inner surface of the outer die (8) are the same as those of a curved surface formed by the front end surface (11), the rear end surface (12), the left end surface (13), the right end surface (14) and the upper end surface (16) together;

the outer surface of the outer die (8) is provided with a plurality of reinforcing ribs (84), and the reinforcing ribs (84) are transverse reinforcing ribs or longitudinal reinforcing ribs;

the edges of the front end and the rear end of the main body mould (82) are respectively provided with a screw hole (85) connected with the front end mould (81) and the rear end mould (83); the edges of the left side and the right side of the main body mould (82) are respectively provided with a plurality of outer mould positioning holes (86) used for positioning and connecting with the mould core (9);

the main body model (82) is formed by an integral template or formed by splicing a plurality of detachable templates.

7. The composite cable protection tube according to claim 6, wherein the mold core (9) comprises a front guide surface (91), a rear guide surface (92), a left guide surface (93), a right guide surface (94), a bottom guide surface (95) and a plurality of support rib plates (96), the support rib plates (96) are arranged inside the mold core (9) and are fixedly connected with the inner wall of the mold core (9), and the front guide surface (91), the rear guide surface (92), the left guide surface (93), the right guide surface (94) and the bottom guide surface (95) are respectively matched with the shapes of the front end surface (11), the rear end surface (12), the left end surface (13), the right end surface (14) and the upper end surface (16);

the edges of the left guide surface (93) and the right guide surface (94) are provided with mold core positioning holes (97) for connecting and positioning the outer mold (8);

the supporting rib plates (96) are transverse reinforcing rib plates or longitudinal reinforcing rib plates;

the mold core (9) is formed by an integral mold plate or a plurality of detachable mold plates in a splicing way.

8. The composite cable protection tube according to claim 6 or 7, wherein the transition male (21) is generally cylindrical, with an outer surface conforming in shape and size to the outer surface of the bushing male (42) to form a circular hole inside the casing (1) in which the bushing male (42) is embedded;

the transition male head (21) is arranged between the assembled front end die (81) and a front guide surface (91) of the die core (9), and the position of the transition male head (21) is limited by a pipe hole on the front end die (81) and the front guide surface (91);

the transition female head (22) is integrally in a circular truncated cone shape, and the outer surface of the transition female head is the same as the concave hole female head (43) in size so as to form the concave hole female head (43) in the shell (1);

the transition female head (22) is arranged between the assembled rear end die (83) and a rear guide surface (92) of the die core (9), and the position of the transition female head (22) is limited by a pipe hole in the rear end die (83) and the rear guide surface (92).

9. A method for preparing a composite cable protection tube according to any one of claims 1 to 8, comprising the steps of:

step one, assembling a front end die (81), a main body die (82) and a rear end die (83) of the outer die (8);

step two, placing a U-shaped steel bar net (72) in the outer die (8);

thirdly, the mold core (9) is arranged in the outer mold (8) and is fixedly connected with a mold core positioning hole (97) through an outer mold positioning hole (86), and the relative position of the mold core (9) and the outer mold (8) is limited;

fourthly, mounting the transition male head (21) and the transition female head (22) between the outer die (8) and the die core (9);

fifthly, pouring a shell-shaped space between the outer mold (8) and the mold core (9) by using a high-strength material, taking out the mold core (9) after the high-strength material is solidified to form the shell (1), and placing the lining sleeve (41) and the sleeve male head (42) into the cable tube hole (4);

sixthly, placing the cushion block (44) between the inner lining sleeve (41) at the bottommost layer and the shell (1), placing the cushion block (44) between two adjacent layers of inner lining sleeves (41), and installing the fixing plate (45) on the outer die (8);

seventhly, pouring or placing a light material into the outer shell (1), wherein the pouring height or placing height of the light material needs to submerge all the lining sleeves (41) to form the inner core (2), and waiting for the inner core (2) to be solidified;

and step eight, after the inner core (2) is solidified, detaching the fixing plate (45), placing a planar reinforcing mesh (71) on the upper surface of the inner core (2), and sealing and covering the lower end face (15) by using a high-strength material to form the complete composite material cable protection pipe.