A cable protection tube for cable laying

Abstract

The present invention relates to the technical field of cable protection, and specifically to a cable protection tube for cable laying, comprising a first tube segment and a second tube segment. The first tube segment and the second tube segment are both sleeved on the cable. The second tube segment can move to a side close to or away from the first tube segment, and is detachably connected to the first tube segment. A protection mechanism is arranged in the first tube segment. The protection mechanism comprises a plurality of support bars, and the support bars are elastic. In the process of connecting the first tube segment and the second tube segment, a cable protection tube for cable laying of the present invention squeezes the support bars located in the first tube segment, so that the squeezed support bars are elastically deformed and abut against the inner wall surface of the first tube segment, thereby realizing the support protection of the cable by the first tube segment, reducing the probability of the cable being damaged when subjected to a large external impact, and increasing the service life of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of cable protection, and in particular to a cable protection tube for cable laying. Background Art

[0002] The cable is made of one or more mutually insulated conductors and an outer insulating protective layer. It mainly includes four parts: conductive core, insulating layer, protective covering layer and sealing sheath. The main function of the cable is to transmit electricity or information from one place to another, realizing the transmission of energy and signals.

[0003] A cable protection tube is a protection tube with a certain mechanical strength that is laid on the outer layer of the cable to prevent the cable from being damaged. Most existing cable protection tubes have thin walls and low load-bearing capacity. When in use, there is no other support except the stress of the protection tube itself. When subjected to a large external impact, the cable protection tube is easily damaged, thereby affecting the normal operation of the cable and even causing safety accidents. Summary of the invention

[0004] The present invention provides a cable protection tube for cable laying to solve the problem that the existing cable protection tube has no other support mode except its own stress when in use, and the cable protection tube is easily damaged when subjected to a large external impact, thereby affecting the normal operation of the cable and even causing a safety accident.

[0005] A cable protection tube for cable laying of the present invention adopts the following technical scheme: a cable protection tube for cable laying, comprising a first tube section and a second tube section; the first tube section and the second tube section are both sleeved on the cable and arranged in sequence on the cable along a first direction, the first direction being the axial direction of the cable, the second tube section can move along the first direction toward or away from a side of the first tube section, and is detachably connected to the first tube section; a protection mechanism is arranged in the first tube section; the protection mechanism comprises a plurality of support bars, the support bars are elastic, and the plurality of support bars are all located on a side of the first tube section close to the cable in the second direction, the second direction being the radial direction of the cable, in an initial state, the support bars are arranged away from an inner wall surface of the first tube section in the second direction, and do not abut against an inner wall surface of the first tube section, and when the second tube section moves along the first direction toward a side close to the first tube section, the two ends of the support bar along the first direction can approach each other, and prompt the support bar to move along the second direction toward a side close to the first tube section, so that the inner wall surface of the first tube section of the support bar abuts.

[0006] Furthermore, the distance that the second pipe segment moves along the first direction toward the side close to the first pipe segment is positively correlated with the distance that the two ends of the support bar along the first direction approach each other in the first direction.

[0007] Further, both ends of the first pipe segment and the second pipe segment along the first direction are respectively referred to as the first end and the second end, and the second end of the first pipe segment and the first end of the second pipe segment are close to each other in the first direction and threadedly matched.

[0008] Furthermore, a thread groove is provided on the inner circumferential wall surface of the second end of the first pipe segment around the first direction, and a thread protrusion is provided on the outer circumferential wall surface of the first end of the second pipe segment around the first direction, and the thread protrusion is rotatably matched with the thread groove.

[0009] Furthermore, an optical axis segment is provided at the first end of the second tube segment, and the optical axis segment is coaxial with the second tube segment. The section on the second tube segment on which the threaded protrusion is provided is called the threaded segment. The optical axis segment and the threaded segment are arranged sequentially on the second tube segment along the first direction, and the optical axis segment is located on a side of the threaded segment close to the first tube segment in the first direction, and the size of the optical axis segment in the second direction is smaller than the size of the threaded segment in the second direction.

[0010] Furthermore, every two support bars are referred to as a support group, and multiple support groups are evenly distributed on the outer peripheral wall surface of the cable around the first direction, and the two support bars in each support group cross each other and are rotatably connected at their middle parts; the two ends of the support bar along the first direction are respectively referred to as the third end and the fourth end, and the third end is located on the side of the fourth end away from the second pipe segment in the first direction; the third end of the support bar is rotatably connected to the inner wall surface of the first pipe segment, and an active slider is rotatably provided on the fourth end of the support bar, and the active slider can slide along the first direction in the first pipe segment, and when the first end of the second pipe segment moves along the first direction toward the second end of the first pipe segment, the first end of the second pipe segment can abut against the active slider.

[0011] Furthermore, a first slide groove is provided on the inner peripheral wall surface of the first pipe section, the first slide groove is arranged along the first direction, and the active sliding block is movably installed in the first slide groove.

[0012] Furthermore, two mounting blocks are arranged on the inner wall surface of the first pipe section, and the third ends of the two support bars in the same support group are rotatably connected to the two mounting blocks respectively.

[0013] Furthermore, two support groups are provided, and the two support groups are evenly distributed around the first direction on the inner circumferential wall surface of the first pipe section.

[0014] Furthermore, the two support bars in each support group are respectively called the first bar segment and the second bar segment, the distance between the third end and the fourth end of the first bar segment in the circumferential direction of the cable is greater than half of the circumference of the cable, and the distance between the third end and the fourth end of the second bar segment in the circumferential direction of the cable is less than half of the circumference of the cable.

[0015] The beneficial effects of the present invention are as follows: a cable protection tube for cable laying of the present invention sets an elastic support strip between the cable and the first tube section, and during the process of connecting the first tube section and the second tube section, squeezes the support strip located in the first tube section, so that the two ends of the squeezed support strip in the first direction are close to each other and produce elastic deformation, and then the support strip moves along the second direction toward the side close to the first tube section until the support strip abuts against the inner wall surface of the first tube section, thereby providing an elastic supporting force for the first tube section. The installation and cooperation of the first tube section and the second tube section helps to improve the overall supporting effect, realize the support protection of the cable by the first tube section, reduce the probability of the cable being damaged when subjected to a large external impact, and improve the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the overall structure of an embodiment of a cable protection tube for cable laying of the present invention;

[0018] Figure 2 It is a disassembled view of the overall structure of an embodiment of a cable protection tube for cable laying of the present invention;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 A schematic diagram of a second pipe section of an embodiment of a cable protection pipe for laying cables according to the present invention;

[0021] Figure 5 A front view of a first pipe section of an embodiment of a cable protection pipe for cable laying of the present invention;

[0022] Figure 6 for Figure 5 Schematic diagram of the section along the middle edge BB;

[0023] Figure 7 The present invention is a schematic diagram of the installation of a support group and cables in an embodiment of a cable protection tube for laying cables according to the present invention.

[0024] In the figure: 100, installation pipe section; 110, first pipe section; 111, threaded groove; 112, first slide groove; 113, mounting block; 120, second pipe section; 121, threaded protrusion; 122, optical axis section; 200, cable; 300, support bar; 301, third end; 302, fourth end; 310, support group; 311, first bar section; 312, second bar section; 400, active slider; 401, sliding protrusion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] An embodiment of a cable protection tube for cable laying of the present invention is as follows Figures 1 to 7 shown.

[0027] A cable protection tube for cable laying includes an installation tube section 100, wherein two installation tube sections 100 are provided, and the two installation tube sections 100 are respectively a first tube section 110 and a second tube section 120. The first tube section 110 and the second tube section 120 are both sleeved on a cable 200 and are sequentially arranged on the cable 200 along a first direction, wherein the first direction is the axial direction of the cable 200, and the second tube section 120 can move along the first direction toward or away from a side of the first tube section 110, and is detachably connected to the first tube section 110.

[0028] A protection mechanism is provided in the first pipe section 110. The protection mechanism includes a plurality of support bars 300, which are elastic and are all located on the side of the first pipe section 110 close to the cable 200 in the second direction, the second direction being the radial direction of the cable 200. In the initial state, the support bars 300 are arranged away from the inner wall surface of the first pipe section 110 in the second direction and do not abut against the inner wall surface of the first pipe section 110. When the second pipe section 120 moves along the first direction toward the side close to the first pipe section 110, the two ends of the support bars 300 along the first direction can approach each other, and the support bars 300 are urged to move along the second direction toward the side close to the first pipe section 110, so that the support bars 300 abut against the inner wall surface of the first pipe section 110.

[0029] In this embodiment, two installation pipe sections 100 are provided, and an elastic support bar 300 is provided between the cable 200 and the first pipe section 110 of the installation pipe section 100. During the connection process between the first pipe section 110 and the second pipe section 120, the support bar 300 located in the first pipe section 110 is squeezed, so that the two ends of the squeezed support bar 300 in the first direction are close to each other and produce elastic deformation, and then the support bar 300 moves along the second direction toward the side close to the first pipe section 110 until the support bar 300 abuts against the inner wall surface of the first pipe section 110, providing an elastic supporting force for the first pipe section 110. The installation and cooperation of the first pipe section 110 and the second pipe section 120 helps to improve the overall supporting effect, realize the support protection of the cable 200 by the first pipe section 110, reduce the probability of damage of the cable 200 when subjected to a large external impact, and enable the cable 200 to work normally.

[0030] In this embodiment, the distance that the second tube section 120 moves along the first direction toward the first tube section 110 is positively correlated with the distance that the two ends of the support bar 300 along the first direction approach each other in the first direction.

[0031] Specifically, both ends of the first pipe segment 110 and the second pipe segment 120 along the first direction are respectively referred to as the first end and the second end. The second end of the first pipe segment 110 and the first end of the second pipe segment 120 are close to each other in the first direction and threadedly matched.

[0032] Specifically, a thread groove 111 is provided on the inner wall surface of the second end of the first pipe segment 110 around the first direction, and a thread protrusion 121 is provided on the outer wall surface of the first end of the second pipe segment 120 around the first direction. The thread protrusion 121 rotates with the thread groove 111 to achieve a detachable connection between the first pipe segment 110 and the second pipe segment 120.

[0033] In this embodiment, the first pipe section 110 and the second pipe section 120 are connected by setting a threaded fit. During installation, the first pipe section 110 remains stationary, and the second pipe section 120 rotates relative to the first pipe section 110 about the first direction while moving relative to the first pipe section 110 along the first direction, thereby realizing a detachable connection between the first pipe section 110 and the second pipe section 120, and the structure is simple and convenient to use. Moreover, by adjusting the distance that the first end of the second pipe section 120 moves toward the second end of the first pipe section 110 along the first direction, the deformation degree of the support bar 300 in the first pipe section 110 can be adjusted, and then the support force of the support bar 300 on the first pipe section 110 can be adjusted, so that the first pipe section 110 can better adapt to different conditions of external pressure, and further improve the protection effect of the first pipe section 110 on the cable 200.

[0034] In this embodiment, every two support bars 300 are referred to as a support group 310. The plurality of support groups 310 are evenly distributed on the outer peripheral wall surface of the cable 200 in the first direction. The two support bars 300 in each support group 310 cross each other and are rotatably connected in the middle thereof, so that the two support bars 300 in each support group 310 can be wound around the cable 200. The two ends of the support bar 300 along the first direction are referred to as the third end 301 and the fourth end 302, respectively. The third end 301 is located on the side of the fourth end 302 away from the second pipe section 120 in the first direction. The third end 301 of the support bar 300 is rotatably connected to the inner wall surface of the first pipe section 110. An active slider 400 is rotatably provided on the fourth end 302 of the support bar 300. The active slider 400 can slide in the first direction in the first pipe section 110, that is, two active sliders 400 are provided. When the first end of the second pipe segment 120 moves along the first direction toward the side close to the second end of the first pipe segment 110, the first end of the second pipe segment 120 can abut against the active slider 400, and the active slider 400 causes the fourth end 302 of the support bar 300 to move along the first direction toward the side close to the third end 301 of the support bar 300, thereby enabling the support bar 300 to abut against the inner wall surface of the first pipe segment 110.

[0035] Specifically, a first slide groove 112 is opened on the inner wall surface of the first pipe section 110, and the first slide groove 112 is arranged along the first direction. A sliding protrusion 401 is arranged on the active slider 400, and the sliding protrusion 401 is slidably installed in the first slide groove 112, so that the active slider 400 can slide along the first direction in the first pipe section 110.

[0036] Two mounting blocks 113 are disposed on the inner wall surface of the first pipe section 110 , and the third ends 301 of the two support bars 300 in the same support group 310 are rotatably connected to the two mounting blocks 113 , respectively.

[0037] Furthermore, an optical axis segment 122 is provided at the first end of the second tube segment 120, and the optical axis segment 122 is coaxial with the second tube segment 120. The section of the second tube segment 120 on which the threaded protrusion 121 is provided is called a threaded segment. The optical axis segment 122 and the threaded segment are arranged sequentially on the second tube segment 120 along the first direction, and the optical axis segment 122 is located on the side of the threaded segment close to the first tube segment 110 in the first direction, and the size of the optical axis segment 122 in the second direction is smaller than the size of the threaded segment in the second direction.

[0038] By setting the optical axis section 122 at the first end of the second tube section 120, when the first end of the second tube section 120 is extended into the first tube section 110, the optical axis section 122 will be able to pass through the thread groove 111 and abut against the active slider 400, so that when the second tube section 120 and the first tube section 110 are installed in cooperation, the optical axis section 122 can move synchronously with the second tube section 120 in the first direction, so that the distance that the second tube section 120 moves along the first direction toward the side close to the first tube section 110 is positively correlated with the distance that the two ends of the support bar 300 along the first direction approach each other in the first direction.

[0039] Specifically, two support groups 310 are provided, and the two support groups 310 are evenly distributed around the first direction on the inner wall surface of the first pipe section 110, and the two support bars 300 located at the third end 301 and adjacently arranged around the first direction can be rotatably installed on the same mounting block 113, and the two support bars 300 located at the fourth end 302 and adjacently arranged around the first direction can be rotatably installed on the same active slider 400.

[0040] In another possible embodiment, the two support bars 300 in each support group 310 are respectively referred to as a first bar segment 311 and a second bar segment 312, and the distance between the third end 301 and the fourth end 302 of the first bar segment 311 in the circumferential direction of the cable 200 is greater than half of the circumference of the cable 200, and the distance between the third end 301 and the fourth end 302 of the second bar segment 312 in the circumferential direction of the cable 200 is less than half of the circumference of the cable 200.

[0041] In this embodiment, by limiting the distance between the third end 301 and the fourth end 302 of the first segment 311 and the third end 301 and the fourth end 302 of the second segment 312 in each support group 310 in the circumferential direction of the cable 200, before installing the first pipe segment 110 and the second pipe segment 120, the cable 200 is first passed through the first pipe segment 110 and the second pipe segment 120 in sequence. When the cable 200 passes through the second segment 312 of the first pipe segment 110, the third end 301 and the fourth end 302 of the second segment 312 will abut against the surface of the cable 200 along the second direction and cause the cable 200 to deform, that is, cause the cable 200 to be slightly bent.

[0042] When the third end 301 and the fourth end 302 of the second segment 312 are in contact with the cable 200, during the process of the fourth end 302 of the second segment 312 moving along the first direction toward the third end 301 of the second segment 312, the fourth end 302 of the second segment 312 will prompt the cable 200 in contact therewith to move synchronously in the first direction. At this time, the third end 301 of the second segment 312 remains stationary, so that the cable 200 is in a relaxed state inside the first tube segment 110, leaving a certain margin, so as to prevent the cable 200 from being shortened due to thermal expansion and contraction or other situations during actual use, causing the cable 200 to be over-stretched and damaged.

[0043] In a further embodiment, a plurality of installation pipe segments 100 are provided, and the plurality of installation pipe segments 100 are all sleeved on the cable 200 and sequentially arranged on the cable 200 along the first direction. The plurality of installation pipe segments 100 have the same structure, and a threaded protrusion 121 is provided on the outer peripheral wall surface of the first end of each installation pipe segment 100 around the first direction, and a threaded groove 111 is provided on the inner peripheral wall surface of the second end of each installation pipe segment 100 around the first direction. And a protection mechanism is provided in each installation pipe segment 100. The plurality of installation pipe segments 100 are respectively the first pipe segment 110, the second pipe segment 120, the third pipe segment, ..., the N-1 pipe segment and the N-1 pipe segment, where N is a positive integer. The N-1 pipe segment can move along the first direction toward the side of the N-1 pipe segment adjacent to it, and is detachably connected to the N-1 pipe segment. When the Nth pipe segment moves along the first direction toward the side close to the N-1th pipe segment, the two ends of the support bar 300 in the N-1th pipe segment along the first direction can approach each other, and prompt the N-1th pipe segment support bar 300 to move along the second direction toward the side close to the N-1th pipe segment and abut against the inner wall surface of the N-1th pipe segment.

[0044] This embodiment can adapt to different installation situations by setting multiple installation pipe segments 100, which is convenient for increasing or decreasing the number of installation pipe segments 100 used. It should be particularly noted that during installation, with the N-1th pipe segment as a reference, the pipe segment remains relatively still, and the Nth pipe segment moves along the first direction toward the side close to the N-1th pipe segment, so that the protection mechanism in the N-1th pipe segment is effective, while the protection mechanism in the Nth pipe segment is in an invalid state, that is, the protection mechanism in the Nth pipe segment does not work.

[0045] In combination with the above embodiments, the specific working process is as follows:

[0046] Taking two installation pipe sections 100 as an example, before installing the first pipe section 110 and the second pipe section 120, the cable 200 is first passed through the first pipe section 110 and the second pipe section 120 in sequence, and then installed.

[0047] During installation, the first pipe section 110 remains stationary. When the first end of the second pipe section 120 is inserted into the first pipe section 110, the optical axis section 122 will be able to pass through the thread groove 111 and abut against the active slider 400. Then the operator rotates the second pipe section 120 relative to the first pipe section 110 about the first direction while moving relative to the first pipe section 110 along the first direction. At this time, the optical axis section 122 can move synchronously with the second pipe section 120 in the first direction and promote the active slider 400 to move. The movement of the active slider 400 in the first direction will promote the fourth end 302 of the support bar 300 to move closer to the support bar 30 along the first direction. 0 moves to one side of the third end 301 of the first pipe segment 110, and during the connection between the first pipe segment 110 and the second pipe segment 120, the support bar 300 located in the first pipe segment 110 is squeezed, so that the squeezed support bar 300 produces elastic deformation, and then the support bar 300 moves along the second direction to the side close to the first pipe segment 110 until the support bar 300 abuts against the inner wall surface of the first pipe segment 110, providing an elastic supporting force for the first pipe segment 110, and utilizing the first pipe segment 110 and the second pipe segment 120 to install and cooperate, which helps to improve the overall supporting effect and realize the support protection of the first pipe segment 110 for the cable 200.

[0048] Furthermore, by adjusting the distance that the first end of the second pipe segment 120 moves along the first direction toward the second end of the first pipe segment 110, the deformation degree of the support bar 300 in the first pipe segment 110 can be adjusted, and then the supporting force of the support bar 300 on the first pipe segment 110 can be adjusted, so that the first pipe segment 110 can better adapt to different conditions of external pressure, and further improve the protection effect of the first pipe segment 110 on the cable 200.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable protection tube for cable laying, characterized in that: The cable assembly comprises a first tube section and a second tube section; the first tube section and the second tube section are both sleeved on the cable and are arranged in sequence on the cable along a first direction, the first direction being the axial direction of the cable, the second tube section can move along the first direction toward or away from a side of the first tube section, and is detachably connected to the first tube section; a protection mechanism is arranged in the first tube section; the protection mechanism comprises a plurality of support bars, the support bars are elastic, the plurality of support bars are all located on a side of the first tube section that is close to the cable in the second direction, the second direction being the radial direction of the cable, in an initial state, the support bars are arranged in the second direction away from an inner wall surface of the first tube section and do not abut against an inner wall surface of the first tube section, and when the second tube section moves along the first direction toward a side that is close to the first tube section, two ends of the support bars along the first direction can approach each other and prompt the support bars to move along the second direction toward a side that is close to the first tube section, so that the inner wall surface of the first tube section of the support bars abuts against. Both ends of the first tube section and the second tube section along the first direction are They are respectively called the first end and the second end, the second end of the first tube segment and the first end of the second tube segment are close to each other in the first direction and threadedly matched; every two support bars are called a support group, and multiple support groups are evenly distributed around the first direction on the outer circumferential wall surface of the cable, and the two support bars in each support group cross each other and are rotatably connected in the middle; the two ends of the support bar along the first direction are respectively called the third end and the fourth end, and the third end is located on the side of the fourth end away from the second tube segment in the first direction; the third end of the support bar is rotatably connected to the inner wall surface of the first tube segment, and an active slider is rotatably provided on the fourth end of the support bar, the active slider can slide along the first direction in the first tube segment, and when the first end of the second tube segment moves along the first direction toward the side close to the second end of the first tube segment, the first end of the second tube segment can abut against the active slider; a first slide groove is opened on the inner circumferential wall surface of the first tube segment, the first slide groove is set along the first direction, and the active slider is movably installed in the first slide groove.

2. A cable protection tube for cable laying according to claim 1, characterized in that: The distance that the second pipe section moves along the first direction toward the side close to the first pipe section is positively correlated with the distance that the two ends of the support bar along the first direction approach each other in the first direction.

3. A cable protection tube for cable laying according to claim 2, characterized in that: A thread groove is provided on the inner circumferential wall surface of the second end of the first pipe segment around the first direction, and a thread protrusion is provided on the outer circumferential wall surface of the first end of the second pipe segment around the first direction, and the thread protrusion is rotatably matched with the thread groove.

4. A cable protection tube for cable laying according to claim 3, characterized in that: An optical axis segment is provided at the first end of the second tube segment, and the optical axis segment is coaxial with the second tube segment. The segment on the second tube segment where the threaded protrusion is provided is called the threaded segment. The optical axis segment and the threaded segment are arranged sequentially on the second tube segment along the first direction, and the optical axis segment is located on a side of the threaded segment close to the first tube segment in the first direction, and the size of the optical axis segment in the second direction is smaller than the size of the threaded segment in the second direction.

5. A cable protection tube for cable laying according to claim 1, characterized in that: Two mounting blocks are arranged on the inner wall surface of the first pipe section, and the third ends of the two support bars in the same support group are rotatably connected to the two mounting blocks respectively.

6. A cable protection tube for cable laying according to claim 1, characterized in that: Two support groups are provided, and the two support groups are evenly distributed around the first direction on the inner circumferential wall surface of the first pipe section.

7. A cable protection tube for cable laying according to claim 6, characterized in that: The two support bars in each support group are respectively called the first bar segment and the second bar segment. The distance between the third end and the fourth end of the first bar segment in the circumferential direction of the cable is greater than half of the circumference of the cable, and the distance between the third end and the fourth end of the second bar segment in the circumferential direction of the cable is less than half of the circumference of the cable.

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