Expanding structure of expanding machine

Abstract

The utility model relates to the technical field of machinery for processing and treating steel pipes, and discloses an expanding structure of an expanding mill, which comprises a rotating shaft, the left end of the rotating shaft is mounted on the right side of a rack, a rotating mechanism is arranged on the right side of the rotating shaft, and an expanding mechanism is fixedly connected to the right end of the rotating shaft; the gear motor is installed on the lower portion of the machine frame through a support, and the gear is meshed with the gear ring. According to the expanding structure of the expanding machine, the conveying pump is driven, hydraulic oil is injected into the limiting rod through the connecting pipe, the connecting rod is made to be far away from the pull rod, the expanding plate is pulled through the pull rod, the expanding plate is made to be far away from the connecting rod, and the expanding plate and the connecting rod are kept horizontal through the parallel rod set; and a gear motor is driven, so that the gear motor drives a gear to rotate, and then a rotating shaft is driven to rotate through a gear ring, so that the expanding mechanism rotates, and the expanding mechanism can expand the diameter of the steel pipe more uniformly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mechanical technical field of steel pipe processing and treatment, especially relates to a dilating structure of expander. BACKGROUND

[0002] The expander is a kind of mechanical equipment for eliminating steel pipe forming pressure and welding stress in the production process of large-diameter straight seam welded pipe, and the expander of present stage is mainly used to make the pipe end shape and circumference of two steel pipes to be welded identical, for example, one of the steel pipes is deformed due to pressure in transportation, i.e. the pipe end of the steel pipe is clamped to be consistent with the pipe end of another steel pipe to be welded by expander, and then the two steel pipes can be welded into one.

[0003] The dilating structure of the expander at present is mostly a fixed-size conical cylinder, and when dilating steel pipes of different sizes, different sizes of dilating structures need to be replaced, which is very inconvenient to use. UTILITY MODEL CONTENT

[0004] The utility model mainly aims at providing a dilating structure of expander, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model takes the technical scheme as follows: a dilating structure of expander, comprising a rotating shaft, the rotating shaft left end is installed on the right side of frame, the rotating shaft right side is provided with rotating mechanism, the rotating shaft right end is fixedly connected with dilating mechanism;

[0006] The rotating mechanism comprises a reduction motor, a gear and a gear ring, the gear ring middle part is fixedly connected to the right side outer periphery of rotating shaft, the gear middle part is fixedly connected to the right side output end of reduction motor, the reduction motor is installed on the lower part of frame through support, and the gear and the gear ring are engaged with each other.

[0007] Preferably, the dilating mechanism comprises a connecting rod, a parallel rod group, a dilating plate, a pull rod, a limiting rod, a piston and a hydraulic assembly, the pull rod left side is fixedly connected to the right end of rotating shaft, the limiting rod left end is fixedly connected to the right side of pull rod, the limiting rod outer periphery is slidably connected to the left side of connecting rod, the piston left side is fixedly connected to the right end of limiting rod, the piston outer periphery is slidably connected to the inside of connecting rod, one end of parallel rod group is rotatably connected to the outer periphery of connecting rod, the other end of parallel rod group is rotatably connected to one side of dilating plate, one end of pull rod is rotatably connected to the outer periphery of pull rod, the other end of pull rod is rotatably connected to the left end of dilating plate, and the hydraulic assembly is connected with rotating shaft.

[0008] Preferably, the dilating plate right end is inwardly bent.

[0009] Preferably, the hydraulic assembly comprises a cavity, a rotating disc, a connecting pipe and a hydraulic oil tank, the rotating shaft is peripherally connected to the middle part of the rotating disc, the cavity is arranged in the middle part of the rotating shaft, the cavity penetrates the middle part of the pull rod, the limiting rod and the piston, one end of the connecting pipe is fixedly connected to the outer side of the rotating disc, the other end of the connecting pipe penetrates the hydraulic oil tank and is connected with the delivery pump, the delivery pump is installed on the inner bottom wall of the hydraulic oil tank, and the hydraulic oil tank is internally provided with hydraulic oil.

[0010] Preferably, the middle part of the connecting pipe is provided with an electromagnetic valve.

[0011] Preferably, the outer periphery of the cavity is provided with a scale.

[0012] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0013] The delivery pump is driven, hydraulic oil is injected into the limiting rod through the connecting pipe, the connecting rod is away from the pull rod, the expansion plate is pulled by the pull rod, the expansion plate is away from the connecting rod, the parallel rod set is used to keep the expansion plate and the connecting rod horizontal, the diameter of the expansion mechanism is adjusted, the speed reducer motor is driven, the speed reducer motor drives the gear to rotate, the rotating shaft is driven to rotate through the gear ring, the expansion mechanism is rotated, and the expansion mechanism can uniformly expand the steel pipe. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the expansion structure of the diameter expansion machine.

[0015] Figure 2 It is a rotating mechanism structure schematic view of the expansion structure of the diameter expansion machine.

[0016] Figure 3 It is a hydraulic assembly structure schematic view of the expansion structure of the diameter expansion machine.

[0017] Figure 4 It is a limiting rod structure schematic view of the expansion structure of the diameter expansion machine.

[0018] In the drawing: 1, rotating shaft; 2, rotating mechanism; 201, speed reducer motor; 202, gear; 203, gear ring; 3, expansion mechanism; 301, connecting rod; 302, parallel rod set; 303, expansion plate; 304, pull rod; 305, limiting rod; 306, piston; 307, cavity; 308, rotating disc; 309, connecting pipe; 310, hydraulic oil tank; 311, electromagnetic valve. DETAILED DESCRIPTION

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-4 As shown, an expansion structure of an expansion machine includes a rotating shaft 1, the left end of which is mounted on the right side of the frame, a rotating mechanism 2 is provided on the right side of the rotating shaft 1, and an expansion mechanism 3 is fixedly connected to the right end of the rotating shaft 1.

[0021] In this embodiment, the rotating mechanism 2 includes a reduction motor 201, a gear 202, and a gear ring 203. The gear ring 203 is fixedly connected to the outer right side of the rotating shaft 1 at its center. The gear 202 is fixedly connected to the output end of the reduction motor 201 at its center. The reduction motor 201 is mounted on the lower part of the frame via a bracket. The gear 202 and the gear ring 203 mesh with each other.

[0022] Specifically, the drive gear motor 201 drives the gear 202 to rotate, which in turn drives the rotating shaft 1 to rotate through the gear ring 203, thereby causing the expansion mechanism 3 to rotate and enabling the expansion mechanism 3 to expand the diameter of the steel pipe more evenly.

[0023] In this embodiment, the expansion mechanism 3 includes a connecting rod 301, a parallel rod group 302, an expansion plate 303, a pull rod 304, a limiting rod 305, a piston 306, and a hydraulic assembly. The left side of the pull rod 304 is fixedly connected to the right end of the rotating shaft 1. The left end of the limiting rod 305 is fixedly connected to the right side of the pull rod 304, and the outer periphery of the limiting rod 305 is slidably connected to the left side of the connecting rod 301. The left side of the piston 306 is fixedly connected to the right end of the limiting rod 305, and the outer periphery of the piston 306 is slidably connected to the inside of the connecting rod 301. One end of the parallel rod group 302 is rotatably connected to the outer periphery of the connecting rod 301, and the other end of the parallel rod group 302 is rotatably connected to one side of the expansion plate 303. One end of the pull rod 304 is rotatably connected to the outer periphery of the pull rod 304, and the other end of the pull rod 304 is rotatably connected to the expansion plate 303. At the left end of 03, the hydraulic component is connected to the rotating shaft 1. The right end of the expansion plate 303 is bent inward. The hydraulic component includes a cavity 307, a rotating disk 308, a connecting pipe 309, and a hydraulic oil tank 310. The outer periphery of the rotating shaft 1 is rotatably connected to the middle of the rotating disk 308. The cavity 307 is opened in the middle of the rotating shaft 1 and passes through the middle of the pull rod 304, the limit rod 305, and the piston 306. One end of the connecting pipe 309 is fixedly connected to the outside of the rotating disk 308, and the other end of the connecting pipe 309 passes through the hydraulic oil tank 310 and is connected to the delivery pump. The delivery pump is installed on the inner bottom wall of the hydraulic oil tank 310. The hydraulic oil tank 310 is filled with hydraulic oil. A solenoid valve 311 is installed in the middle of the connecting pipe 309. The outer periphery of the cavity 307 is marked with graduations.

[0024] Specifically, the drive pump injects hydraulic oil into the inside of the limiting rod 305 through the connecting pipe 309, so that the connecting rod 301 is away from the pull rod 304, thereby pulling the expansion plate 303 through the pull rod 304, so that the expansion plate 303 is away from the connecting rod 301, and the expansion plate 303 is kept horizontal with the connecting rod 301 through the parallel rod group 302, thereby adjusting the diameter of the expansion mechanism 3, and the steel pipe of different sizes can be expanded in diameter.

[0025] Working principle:

[0026] The drive pump injects hydraulic oil into the inside of the limiting rod 305 through the connecting pipe 309, so that the connecting rod 301 is away from the pull rod 304, thereby pulling the expansion plate 303 through the pull rod 304, so that the expansion plate 303 is away from the connecting rod 301, and the expansion plate 303 is kept horizontal with the connecting rod 301 through the parallel rod group 302, thereby adjusting the diameter of the expansion mechanism 3, the drive speed reducer 201, so that the speed reducer 201 drives the gear 202 to rotate, and then drives the rotating shaft 1 to rotate through the gear ring 203, so that the expansion mechanism 3 rotates, so that the expansion mechanism 3 can more uniformly expand the steel pipe.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. Expanding structure of a diameter-expanding machine comprising a rotating shaft (1), characterized in that: The left end of the rotating shaft (1) is installed on the right side of the frame, the right side of the rotating shaft (1) is provided with a rotating mechanism (2), and the right end of the rotating shaft (1) is fixedly connected with an expansion mechanism (3). The rotating mechanism (2) comprises a speed reducer motor (201), a gear (202) and a gear ring (203), the middle part of the gear ring (203) is fixedly connected to the outer periphery of the right side of the rotating shaft (1), the middle part of the gear (202) is fixedly connected to the output end of the right side of the speed reducer motor (201), the speed reducer motor (201) is installed on the lower part of the frame through a support, and the gear (202) and the gear ring (203) are in meshing engagement.

2. The expansion structure of the expanding machine according to claim 1, wherein: The expansion mechanism (3) comprises a connecting rod (301), a parallel rod group (302), an expansion plate (303), a pull rod (304), a limiting rod (305), a piston (306) and a hydraulic assembly, the left side of the pull rod (304) is fixedly connected to the right end of the rotating shaft (1), the left end of the limiting rod (305) is fixedly connected to the right side of the pull rod (304), the outer periphery of the limiting rod (305) is slidably connected to the left side of the connecting rod (301), the left side of the piston (306) is fixedly connected to the right end of the limiting rod (305), the outer periphery of the piston (306) is slidably connected to the inside of the connecting rod (301), one end of the parallel rod group (302) is rotatably connected to the outer periphery of the connecting rod (301), the other end of the parallel rod group (302) is rotatably connected to one side of the expansion plate (303), one end of the pull rod (304) is rotatably connected to the outer periphery of the pull rod (304), and the other end of the pull rod (304) is rotatably connected to the left end of the expansion plate (303), and the hydraulic assembly is connected with the rotating shaft (1).

3. The expansion structure of a pipe expanding machine according to claim 2, wherein: The right end of the expansion plate (303) is inwardly bent.

4. The expansion structure of the expanding machine according to claim 2, wherein: The hydraulic assembly comprises a cavity (307), a rotating disc (308), a connecting pipe (309) and a hydraulic oil tank (310), the outer periphery of the rotating shaft (1) is rotatably connected to the middle part of the rotating disc (308), the cavity (307) is formed in the middle part of the rotating shaft (1), and the cavity (307) penetrates through the middle parts of the pull rod (304), the limiting rod (305) and the piston (306), one end of the connecting pipe (309) is fixedly connected to the outside of the rotating disc (308), the other end of the connecting pipe (309) penetrates through the hydraulic oil tank (310) and is connected with a delivery pump, the delivery pump is installed on the inner bottom wall of the hydraulic oil tank (310), and hydraulic oil is arranged in the inside of the hydraulic oil tank (310).

5. The expansion structure of a pipe expanding machine according to claim 4, wherein: An electromagnetic valve (311) is installed in the middle part of the connecting pipe (309).

6. The expansion structure of a pipe expanding machine according to claim 4, wherein: A scale is arranged on the outer periphery of the cavity (307).

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