Anti-deformation MPP power cable protection pipe

Abstract

The utility model discloses an anti-deformation MPP power cable protection tube, which relates to the technical field of power protection tubes, and comprises a built-in tube and an outer support plate, two opposite lantern rings are sleeved on the built-in tube, a support spring is fixedly arranged between the lantern rings, the support spring is sleeved on the built-in tube, and the outer support plate is fixed on the built-in tube. Four second rotating shafts in a circumferential array are fixedly arranged on the sides, close to the two ends of the built-in pipe, of the lantern rings, the positions of the four outer supporting plates correspond to the positions of the second rotating shafts, two opposite first rotating shafts are arranged on the inner walls of the outer supporting plates, supporting arms are rotationally arranged between the first rotating shafts and the second rotating shafts, and a connecting plate is slidably arranged between the two outer supporting plates. The compression-resistant spring is simple in structure, the compression-resistant mechanism is sleeved outside the compression-resistant spring, when the compression-resistant spring is extruded, the pressure can be transmitted to the transverse spring, and the compression-resistant spring is stable in structure, high in practicability and suitable for popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of power protection pipes, and particularly relates to an MPP power cable protection pipe resistant to deformation. Background Art

[0002] The MPP pipe, also known as the MPP power cable protection pipe, is divided into an excavation type and a non-excavation type. The MPP non-excavation pipe is also called the MPP pipe jacking or the dragging pipe. The MPP pipe uses modified polypropylene as the main raw material and has the characteristics of high temperature resistance and external pressure resistance. Since the MPP pipe uses modified polypropylene as the main raw material, it is prone to cracking when it is applied to non-excavation places and is subjected to external pressure. The currently common method for compressive deformation resistance is to thicken the MPP pipe, resulting in a heavy pipe and high cost. Content of the Utility Model

[0003] The purpose of the utility model is to provide an MPP power cable protection pipe resistant to deformation, which has a simple structure and is externally sleeved with a compressive mechanism. When being squeezed, the pressure received can be transmitted to the horizontal spring, with a stable structure and strong practicability, and is suitable for popularization.

[0004] The utility model provides the following technical solution: an MPP power cable protection pipe resistant to deformation, including an inner pipe and an outer support plate. Two opposite collars are sleeved on the inner pipe. A support spring is fixedly arranged between the collars and is sleeved on the inner pipe. Four circumferentially arrayed second rotating shafts are fixedly arranged on one side of each collar close to both ends of the inner pipe. The positions of the four outer support plates correspond to each second rotating shaft. Two opposite first rotating shafts are arranged on the inner wall of the outer support plate. A support arm is rotatably arranged between the first rotating shaft and the second rotating shaft. The support arm is in an up-and-down inclined state. An adapter plate is slidably arranged between the two outer support plates.

[0005] Preferably, the outer support plate and the adapter plate are semi-circular. An array of slide rail grooves are arranged on the outer wall of the adapter plate. Side grooves are arranged on both side walls of the slide rail grooves. A slider is fixedly arranged on the outer support plate at the position of the slide rail groove. Both sides of the slider extend into the side grooves and are slidably connected thereto.

[0006] Preferably, the inner pipe is an MPP pipe, the outer support plate and the adapter plate are hard plastic plates. Reinforcing plates are fixedly arranged on both sides of the first rotating shaft at the connection of the outer support plate.

[0007] Preferably, a flat plate is fixedly arranged on the outer wall of the outer support plate and is located on the center line of the outer support plate.

[0008] The beneficial effects of the utility model: simple structure, externally sleeved with a compressive mechanism. When being squeezed, the pressure received can be transmitted to the horizontal spring, with a stable structure and strong practicability. Specifically as follows:

[0009] (1) The utility model is provided with an outer support plate. When being extruded externally, the outer support plate provides support, and the four outer support plates close towards the center. During the process of the outer support plate moving towards the inner tube, the support arm gradually changes from an inclined state to being parallel to the inner tube. Since one end of the support arm is fixed in position on the outer support plate, during the rotation of the support arm, the other end thereof pushes the collar to slide, and the two collars move relatively closer, squeezing the middle support spring, so that the pressure received externally is transferred to the support spring, preventing the inner tube from deforming under pressure.

[0010] (2) The utility model is provided with an adapter plate. The outer support plate is buckled on the slide rail groove of the adapter plate through a slider. When the outer support plate is closed under pressure, the slider thereon slides on the slide rail groove. Since the four outer support plates are closed together, their moving speeds on the adapter plate are the same. The adapter plate plays a role in closing the gap of the outer support plate. Moreover, the outer support plate is provided with a flat plate which is placed on the ground. When receiving a downward pressure, the pressure acts directly on the outer support plate. When receiving a side pressure, if the pressure acts at the adapter plate, the adapter plate contracts inwards, and the slide rail groove thereon can also close the outer support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0012] Figure 1 is the overall schematic diagram of the utility model;

[0013] Figure 2 is the cross-sectional view of the utility model;

[0014] Figure 3 is the front view of the utility model;

[0015] Figure 4 is the internal structure diagram of the utility model;

[0016] Figure 5 is the enlarged view at A of the utility model;

[0017] The labels in the figure are: 1, inner tube; 2, outer support plate; 3, adapter plate; 4, slide rail groove; 5, support arm; 6, first rotating shaft; 7, second rotating shaft; 8, collar; 9, support spring; 10, side groove; 11, slider; 12, reinforcement plate; 13, flat plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] Now, in combination with the accompanying drawings of the specification, the structural features of the present utility model will be described in detail.

[0022] See Figures 1-4A deformation-proof MPP power cable protection tube comprises an inner tube 1 and an outer support plate 2. Two opposite sleeve rings 8 are sleeved on the inner tube 1. A support spring 9 is fixed between the sleeve rings 8. The support spring 9 is sleeved on the inner tube 1 and supported on the sleeve ring 8 by the support spring 9. Four second rotating shafts 7 in a circumferential array are fixed on one side of the sleeve ring 8 near the two ends of the inner tube 1. The positions of the four outer support plates 2 correspond to each second rotating shaft 7. Two opposite first rotating shafts 6 are arranged on the inner wall of the outer support plate 2. A support arm 5 is rotatably arranged between the first rotating shaft 6 and the second rotating shaft 7. The support arm 5 is in an up-and-down tilted state so that one end of the support arm 5 is fixed on the outer support plate 2. During the rotation of the support arm 5, the other end thereof pushes the sleeve ring 8 to slide. The two rings move relatively close to each other, squeezing the supporting spring 9 in the middle. A connecting plate 3 is slidably provided between the two outer supporting plates 2. The connecting plate 3 serves to seal the gap between the outer supporting plates 2. The inner tube 1 is an MPP pipe. The outer supporting plate 2 and the connecting plate 3 are hard plastic plates. A reinforcing plate 12 is fixedly provided at the connection between the first rotating shaft 6 and the outer supporting plate 2. The reinforcing plate 12 is fixed on both sides of the first rotating shaft 6, so that when the outer supporting plate 2 is subjected to pressure in different directions, the pressure output from the first rotating shaft 6 is shared. A flat plate 13 is fixedly provided on the outer wall of the outer supporting plate 2. The flat plate 13 is located on the center line of the outer supporting plate 2. Since the pressure mostly comes from above, the flat plate 13 is used to prevent the pipeline from rolling, and the pressure-receiving parts are avoided as much as possible from being structurally fragile parts.

[0023] See also Figure 1 , 3 5. The outer support plate 2 and the connecting plate 3 are semi-arc-shaped. An array of slide rail grooves 4 are provided on the outer wall of the connecting plate 3. Side grooves 10 are provided on both side walls of the slide rail grooves 4. The outer support plate 2 is fixedly provided with sliders 11 at the slide rail grooves 4. Both sides of the sliders 11 extend into the side grooves 10 and are slidably connected thereto. The sliders 11 are stuck in the side grooves 10 to prevent the sliders 11 from escaping from the slide rail grooves 4. When the arc-shaped connecting plate 3 is subjected to pressure, it shrinks inwardly, and the slide rail grooves 4 thereon can also be retracted to the outer support plate 2.

[0024] The utility model anti-deformation MPP power cable protection tube has a simple structure, and an external sleeve is provided with a pressure-resistant mechanism. When squeezed, the pressure can be transferred to the transverse spring. The tube has a stable structure, strong practicality, and is suitable for promotion.

[0025] When using it specifically, refer to Figures 1-3, when being externally squeezed, the outer support plate 2 provides support, and the four outer support plates 2 close towards the center. During the process of the outer support plate 2 moving towards the inner tube 1, the support arm 5 gradually changes from an inclined state to being parallel to the inner tube 1. Since one end of the support arm 5 is fixed in position on the outer support plate 2, during the rotation of the support arm 5, the other end thereof pushes the collar 8 to slide, and the two collars move relatively closer, squeezing the middle support spring 9, so that the externally applied pressure is transferred to the support spring 9;

[0026] See Figure 1 , 3 , 5, when the outer support plate 2 is pressured to fold inwards, the slider 11 thereon slides on the slide rail groove 4. Since the four outer support plates 2 fold inwards together, their moving speeds on the connecting plate 3 are the same. The flat plate 13 is placed on the ground. When receiving a downward pressure, the pressure directly acts on the outer support plate 2. When receiving a side pressure, if the pressure acts at the connecting plate 3, the connecting plate 3 contracts inwards, and the slide rail groove 4 thereon can fold inwards the outer support plate 2.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A deformation-resistant MPP power cable protection tube, comprising an inner tube (1) and an outer support plate (2), characterized in that: The inner tube (1) is sleeved with two opposite rings (8), a support spring (9) is fixedly arranged between the rings (8), and the support spring (9) is sleeved on the inner tube (1). Four second rotating shafts (7) in a circumferential array are fixedly arranged on one side of the ring (8) close to the two ends of the inner tube (1), and the positions of the four outer support plates (2) correspond to each second rotating shaft (7). Two opposite first rotating shafts (6) are arranged on the inner wall of the outer support plate (2), and a support arm (5) is rotatably arranged between the first rotating shaft (6) and the second rotating shaft (7), and the support arm (5) is in an up and down tilted state. A connecting plate (3) is slidably arranged between the two outer support plates (2).

2. The anti-deformation MPP power cable protection tube according to claim 1, characterized in that: The outer support plate (2) and the connecting plate (3) are semi-arc-shaped, and an array of slide rail grooves (4) are provided on the outer wall of the connecting plate (3). Side grooves (10) are provided on the two side walls of the slide rail groove (4). The outer support plate (2) is fixedly provided with a slider (11) at the slide rail groove (4), and the two sides of the slider (11) extend into the side grooves (10) and are slidably connected thereto.

3. The anti-deformation MPP power cable protection tube according to claim 1, characterized in that: The inner tube (1) is an MPP pipe, the outer support plate (2) and the connecting plate (3) are hard plastic plates, and a reinforcing plate (12) is fixedly provided at the connection between the first rotating shaft (6) and the outer support plate (2), and the reinforcing plate (12) is fixed on both sides of the first rotating shaft (6).

4. The anti-deformation MPP power cable protection tube according to claim 1, characterized in that: A plane plate (13) is fixedly provided on the outer wall of the outer support plate (2), and the plane plate (13) is located on the center line of the outer support plate (2).

Images