Steel pipe protection horn mouth opener

Abstract

The utility model discloses a flared mouth opener for protecting a steel pipe, which belongs to the technical field of electric service engineering, and adopts the technical scheme that the flared mouth opener for protecting the steel pipe is characterized by comprising a holding rod and a trapezoidal opening arranged at one end of the holding rod, and the opening end of the trapezoidal opening is a small end. The utility model has the beneficial effects that the contact between the inclined surface of the trapezoidal opening and the side wall of the steel pipe in the pulling process can keep the opening degree of the horn mouth consistent, and the flatness of the horn mouth is ensured as much as possible; the width of the trapezoidal opening can be adjusted to adapt to the side walls with different thicknesses, and the opening degree of the trapezoidal opening can be increased to facilitate insertion into the circular side wall.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical engineering, and particularly relates to a steel pipe protective bell mouth opener. Background Art

[0002] In the construction of various electrical engineering projects, the optical cable is protected by a national standard galvanized steel pipe. When the optical cable passes through the steel pipe, the outer skin is easily scratched. In order to protect the optical cable, the outer mouth of the steel pipe is usually bent into a bell mouth. At present, the most common method is to manually use a wrench to bend the outer mouth of the steel pipe into a bell mouth, but because the two sides of the wrench opening are flat, the flatness of the bell mouth is affected. Utility Model Content

[0003] The utility model aims to provide a steel pipe protective bell mouth opener.

[0004] The utility model is realized by the following measures: a steel pipe protective bell mouth opener, characterized in that it comprises a gripping rod and a trapezoidal mouth arranged at one end of the gripping rod, wherein the opening end of the trapezoidal mouth is a small end.

[0005] Furthermore, two bosses are arranged at intervals on the side wall of one end of the gripping rod along the axis direction of the gripping rod, and the opposite surfaces of the two bosses are inclined planes, and the orthographic projections of the two inclined planes are the waists of the trapezoidal mouth. The trapezoidal mouth is an isosceles trapezoid. The angle between the two inclined planes and the axis of the gripping rod is generally 15-45 degrees.

[0006] Furthermore, one of the bosses is a fixed boss, and the other boss is a movable boss, and the movable boss moves along the axis of the gripping rod;

[0007] It also includes a locking piece for fixing the movable boss.

[0008] Furthermore, the movable boss is slidably sleeved on the holding rod via a sleeve, and the locking member is a screw that passes through the sleeve via a threaded connection.

[0009] Furthermore, the holding rod is penetrated by a strip-shaped opening, the movable boss is provided with a sliding rod sliding along the strip-shaped opening, the side wall of the holding rod is provided with a fixing rod corresponding to the sliding rod, the fixing rod is fixed with a screw rod facing the sliding rod, the screw rod penetrates the sliding rod, and nuts are provided on the screw rod and on both sides of the screw rod.

[0010] Furthermore, the cross-sectional shape of the gripping rod is a regular geometric shape.

[0011] Furthermore, a circular push rod is fixedly provided at the edge of the opening end of the trapezoidal opening.

[0012] Furthermore, the holding rod is a telescopic rod, the length of which can be adjusted to save the operator's physical strength. The telescopic rod adopts existing technology and will not be described in detail here.

[0013] Furthermore, a gripping portion is fixedly provided on the other end of the gripping rod, and a hand-held anti-slip groove is provided on the gripping portion.

[0014] How to use: insert the trapezoidal mouth into the side wall of one end of the steel pipe, then move the holding rod to deform the side wall of the steel pipe until the side wall contacts the inclined surface, so that the opening of the bell mouth can always maintain a certain degree of flatness, and move the position of the holding rod along the side wall until a complete bell mouth is formed;

[0015] In order to adapt to side walls of different thicknesses, the movable boss is arranged in an adjustable form. When in use, the distance between the movable boss and the fixed boss can be adjusted according to the thickness of the side wall.

[0016] In addition, since the pipeline is circular, the position of the movable boss can be adjusted to facilitate the insertion of the trapezoidal opening into the side wall of the steel pipe.

[0017] The technical solution provided by the embodiment of the utility model has the following beneficial effects: the contact between the inclined surface of the trapezoidal mouth and the side wall of the steel pipe during the bending process can keep the opening of the bell mouth consistent and ensure the flatness of the bell mouth as much as possible; the width of the trapezoidal mouth can be adjusted to adapt to side walls of different thicknesses and the opening of the trapezoidal mouth can be increased to facilitate insertion into the circular side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present utility model, a brief introduction will be given to the drawings used in the embodiments below. Obviously, the drawings listed below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the utility model;

[0021] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0022] Figure 4 It is a structural schematic diagram of the movable boss.

[0023] In the accompanying drawings, the components represented by each number are listed as follows: 1. holding rod; 2. fixed boss; 3. movable boss; 4. round top rod; 5. inclined surface; 6. holding part; 7. fixed rod; 8. screw rod; 101. strip mouth; 301. sliding rod; 601. anti-slip groove; 801. nut. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1 A steel pipe protective bell mouth opener, characterized in that it includes a gripping rod 1 and a trapezoidal mouth arranged at one end of the gripping rod 1, wherein the opening end of the trapezoidal mouth is a small end.

[0027] Two bosses are arranged at intervals on the side wall of one end of the gripping rod 1 along the axis direction of the gripping rod 1. The opposite surfaces of the two bosses are inclined planes 5. The orthographic projections of the two inclined planes 5 are the waists of the trapezoidal mouth. The trapezoidal mouth is an isosceles trapezoid. The angle between the two inclined planes 5 and the axis of the gripping rod 1 is generally 15-45 degrees.

[0028] The cross-sectional shape of the gripping rod 1 is a regular geometric shape.

[0029] A circular push rod 4 is fixedly arranged at the edge of the opening end of the trapezoidal opening. The axis of the circular push rod 4 is vertical to the axis space of the gripping rod 1.

[0030] The holding rod 1 is a telescopic rod.

[0031] A gripping portion 6 is fixedly provided at the other end of the gripping rod 1 , and a hand-gripping anti-slip groove 601 is provided on the gripping portion 6 .

[0032] Usage: insert the trapezoidal mouth into the side wall of one end of the steel pipe, then bend the holding rod 1 to deform the side wall of the steel pipe until the side wall contacts the inclined surface 5, so that the opening of the bell mouth can always maintain a certain degree of flatness, and move the holding rod 1 along the side wall until a complete bell mouth is formed;

[0033] Embodiment 2:

[0034] See also Figure 2-Figure 4 , on the basis of the first embodiment, one of the bosses is a fixed boss 2, and the other boss is a movable boss 3, and the movable boss 3 moves along the axis of the gripping rod 1;

[0035] It also includes a locking piece for fixing the movable boss 3.

[0036] The movable boss 3 is slidably connected to the holding rod 1 through a sliding sleeve, and the locking member is a screw that passes through the sliding sleeve through a threaded connection.

[0037] A strip-shaped opening 101 is provided through the holding rod 1, a sliding rod 301 sliding along the strip-shaped opening 101 is provided on the movable boss 3, a fixing rod 7 corresponding to the sliding rod 301 is provided on the side wall of the holding rod 1, a screw rod 8 facing the sliding rod 301 is fixed on the fixing rod 7, the screw rod 8 passes through the sliding rod 301, and nuts 801 are provided on the screw rod 8 and on both sides of the screw rod 8.

[0038] Usage: In order to adapt to side walls of different thicknesses, the movable boss 3 is set in an adjustable form. When in use, the distance between the movable boss 3 and the fixed boss 2 can be adjusted according to the thickness of the side wall. In addition, since the pipe is circular, adjusting the position of the movable boss 3 can facilitate the insertion of the trapezoidal port into the side wall of the steel pipe.

[0039] Embodiment three:

[0040] See also Figure 2-Figure 4 Based on the second embodiment, the cross-sections of the gripping rod 1 and the boss are both circular and partially overlap each other;

[0041] The inner surface of the movable boss 3 is a curved surface that fits the outer surface of the gripping rod 1 .

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel pipe protective bell mouth opener, characterized in that: The utility model comprises a holding rod and a trapezoidal opening arranged at one end of the holding rod, wherein the opening end of the trapezoidal opening is a small end.

2. The steel pipe protective bell mouth opener according to claim 1, characterized in that: Two bosses are arranged at intervals on the side wall of one end of the gripping rod along the axial direction of the gripping rod, the opposite surfaces of the two bosses are inclined surfaces, and the orthographic projections of the two inclined surfaces are the waist of the trapezoidal mouth.

3. The steel pipe protective bell mouth opener according to claim 2, characterized in that: One of the bosses is a fixed boss, and the other boss is a movable boss, and the movable boss moves along the axis of the holding rod; It also includes a locking piece for fixing the movable boss.

4. The steel pipe protective bell mouth opener according to claim 3, characterized in that: The movable boss is slidably sleeved on the holding rod via a sleeve, and the locking member is a screw that penetrates the sleeve via a threaded connection.

5. The steel pipe protective bell mouth opener according to claim 3, characterized in that: The holding rod is provided with a strip-shaped opening, the movable boss is provided with a sliding rod sliding along the strip-shaped opening, the side wall of the holding rod is provided with a fixing rod corresponding to the sliding rod, the fixing rod is fixed with a screw rod facing the sliding rod, the screw rod passes through the sliding rod, and nuts are provided on the screw rod and on both sides of the screw rod.

6. The steel pipe protective bell mouth opener according to claim 5, characterized in that: The cross-section of the gripping rod is a regular geometric shape.

7. The steel pipe protective bell mouth opener according to claim 1, characterized in that: A circular top rod is fixedly arranged at the edge of the opening end of the trapezoidal opening.

8. The steel pipe protective bell mouth opener according to claim 1, characterized in that: The holding rod is a telescopic rod.

9. The steel pipe protective bell mouth opener according to claim 1, characterized in that: The other end of the holding rod is fixedly provided with a holding portion, and the holding portion is provided with a hand-held anti-slip groove.

10. The steel pipe protective bell mouth opener according to claim 1, characterized in that: The cross-section of the gripping rod is circular, and the inner surface of the movable boss is a curved surface that fits the outer surface of the gripping rod.

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