TH6929B - A set of conduits with at least one conduit made of thermally malleable plastic. - Google Patents

Abstract

Cable conduit assemblies with at least one cable conduit body made of thermostable plastic. This includes cable conduit with a cross-section of the inner wall of a circular conduit with an inner radius of the conduit and a slide molded from heat-reducing plastic of the plastic conduit. body on the inner wall The ridge extends out in such a way that it is related to the inner circumference by the angle of rotation a, as specified. In a straight cable conduit with the cable to be threaded A contact with a contact width b emerges at the point of contact between The ridge slides with the cable sheath to be threaded in. The ridges are undulating and form a reverse zone between the parts having a constant angle of rotation a, the contact width b of the ridge Z number of the ridges distributed evenly over the circumference of the wall. The inside of the conduit, the inner radius r of the conduit body and the length LK of the ridge contact between the return zones satisfy the following equation: Ar = 0.16 b2zLK angle g, measured in radians of the ridge conduction. The measured slide on the inner wall of the conduit will satisfy the following equation: g = ra/LK (to be published without figure).

Claims (6)

1. Cable laying device With at least one set of cable conduits. Which is produced from synthetic thermoplastic materials It consists of a cable duct with a inner wall of a pipe having a circular cross-section. And having a radius inside the pipe r and a sliding ridge placed on the wall inside the pipe It is made up of a single component from a synthetic thermoplastic material of a synthetic conduit. And which is performed with a predetermined angle of rotation In relation to the inner circumference Where in the cable conduit Which is arranged in a straight line with the cable to be threaded into The contact area where the tangent width of the ridge b occurs between the ridges. And the cable sheath of the cable to be threaded into The combination of the following characteristics produces the following results: 1) The ridges are arranged in a waveform. 2) The width of the contact of the ridge b, with the number Z, distributed evenly across the circumference of the inner wall of the pipe. The internal radius of the conduit r and the length of the contact of the ridge between the return zone. Which is denoted by LK according to the equation Ar = 0.16 b2ZLK, where A is the contact area of the cable sheath at the intersection with the ridge slider. In the contact of the ridge The numerical value falls within the range of 4.5 to 32 square millimeters. 3) The g-angle measured in radians. With the slope of the ridge measured on the wall inside the pipe conforms to the equation g = ra / LK and has a numerical value within the range 0.001 to 1.2 radians, where r is selectable within the range from 12 to 100 mm; and The LK can be selected within the range of 500 to 10000 mm and the cable to be threaded has an external radius within the range of 5 to 45 mm. 2. Cable laying equipment according to claim 1, where the wall inside the cable duct between the sliders is in the form of a recess inward toward the cable duct. And which extend to both sides into the line of the sliding 3. Cable laying device in accordance with claim 1 or 2. It provides a selectable rotation angle within the range between 45 degrees and 340 degrees and offers approximately 180 degrees. 4. Cable-laying device according to any claim 1 to 3, where the contact width of the ridge b travel has a number of Z, distributed at even intervals. Together across the circumference of the inner wall of the pipe. The internal radius of the pipe r, the angle of rotation a and the length LK of the contact of the ridge between the reverse zones conform to the equation Ar = 0.16 b2Z (0.0003 r2a2 + LK2) 1/2. 5. Cable-laying device according to any 1 to 4 claim, where the connection length Lv is between the two segments with a constant rotation angle. The ridges of the connection are continuous parallel to the axis of the conduit. And the tangent width of the ridge b, with the number Z, distributed evenly across the circumference of the inner wall of the pipe. Pipe inner radius The angle of rotation a LK length of the ridge contact between the reverse zone and the length Lv of the junction follows the equation Ar = 0.162Z (0.0003r2a2 + LK2) 1/2 + 4Lvbr. 6. Method for pulling the cable into the cable conduit according to one of the claims 1 to 5. Where there is a selection of the pulling rate of the cable to In order to melt the contact area due to friction heat And formed a position of lubricating friction Due to the flow of molten matter