Trolley device for drawing steel pipe

Abstract

The utility model discloses a trolley device for drawing a steel pipe. The trolley device comprises a base, two front clamping seats, two front driving cylinders, two rear clamping seats and two rear driving cylinders, the base is provided with an inserting cavity which is provided with a forward opening and is used for inserting a steel pipe, two front inclined surfaces and two rear inclined surfaces are arranged in the inserting cavity, and the two front inclined surfaces are opposite to each other and are opened in a splayed shape. The two front driving cylinders are used for driving the two front clamping seats to move back and forth along the two front inclined faces to be close to or far away from each other, and the two rear driving cylinders are used for driving the two rear clamping seats to move back and forth along the two rear inclined faces to be close to or far away from each other. The two front clamping seats or the two rear clamping seats or the two front clamping seats and the two rear clamping seats can be selected to be matched to automatically clamp the end of a steel pipe according to needs, after the steel pipe is drawn, the end of the steel pipe can be automatically loosened, manual operation is not needed, operation is quite easy, convenient and flexible, production efficiency can be improved, and production cost is reduced. And convenience is brought to production operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technology of steel pipe production and processing, especially a trolley device for steel pipe drawing. BACKGROUND

[0002] Steel pipe is steel material with hollow section, and its length is much larger than diameter or circumference. According to section shape, it is divided into round, square, rectangular and special-shaped steel pipe; according to material, it is divided into carbon structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe; according to use, it is divided into conveying pipeline, engineering structure, heat engineering equipment, petroleum and chemical industry, machinery manufacturing, geological drilling, high pressure equipment and so on; according to production process, it is divided into seamless steel pipe and welded steel pipe, wherein the seamless steel pipe is divided into hot rolling and cold rolling (drawing), and the welded steel pipe is divided into straight seam welded steel pipe and spiral seam welded steel pipe.

[0003] During production and processing of steel pipe, drawing treatment is often needed to change shape and size of the steel pipe. At present, slide plate device is usually connected with the end of steel pipe, and then traction device is used to drive the slide plate device to draw the steel pipe. However, in the prior art, the end of steel pipe needs to be manually locked on the slide plate device, and after drawing is completed, the end of steel pipe needs to be manually unlocked, which is very troublesome and low in efficiency. Therefore, it is necessary to study a scheme to solve the above problems. SUMMARY

[0004] Therefore, the utility model mainly aims at providing a trolley device for steel pipe drawing, which can effectively solve the problems of troublesome operation and low efficiency of existing steel pipe drawing.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A trolley device for steel pipe drawing, comprising a base, two front clamping seats, two front driving cylinders, two rear clamping seats and two rear driving cylinders; the base is provided with an insertion cavity with an opening facing forward for inserting a steel pipe, the insertion cavity is provided with two front inclined surfaces and two rear inclined surfaces, the two front inclined surfaces face each other and are spread in a mule's foot shape, the two rear inclined surfaces are located behind the two front inclined surfaces, the two rear inclined surfaces face each other and are spread in a mule's foot shape, the bottom of the base is provided with a plurality of rotatable pulleys; the two front clamping seats are located in the insertion cavity and are respectively slidably installed on the two front inclined surfaces, the two front clamping seats move back and forth along the two front inclined surfaces to approach or move away from each other, and a front clamping opening for clamping the steel pipe is formed between the two front clamping seats; the two front driving cylinders are symmetrically arranged in the insertion cavity, the rear ends of the two front driving cylinders are hinged to the base, the front ends of the two front driving cylinders each extend a front piston rod, and the front ends of the two front piston rods are respectively hinged to the two front clamping seats; the two rear clamping seats are located in the insertion cavity and are respectively slidably installed on the two rear inclined surfaces, the two rear clamping seats move back and forth along the two rear inclined surfaces to approach or move away from each other, and a rear clamping opening for clamping the steel pipe is formed between the two rear clamping seats; the two rear driving cylinders are symmetrically arranged in the insertion cavity, the rear ends of the two rear driving cylinders are hinged to the base, the front ends of the two rear driving cylinders each extend a rear piston rod, and the front ends of the two rear piston rods are respectively hinged to the two rear clamping seats.

[0007] Preferably, the base comprises a bottom plate, a rear seat plate, two front side plates, two rear side plates and two inner side plates; a plurality of rollers are arranged on the bottom plate, the rear seat plate is vertically arranged on the rear side of the bottom plate, the two front side plates are symmetrically arranged and spread in a mule's foot shape and are vertically arranged on the bottom plate, the two front inclined surfaces are respectively the inner side surfaces of the two front side plates, the two rear side plates are horizontally and vertically arranged on the bottom plate, the two rear side plates are respectively located behind the two front side plates, the two inner side plates are respectively located on the inner sides of the two rear side plates, the two inner side plates are symmetrically arranged and spread in a mule's foot shape and are vertically arranged on the bottom plate, and the two rear inclined surfaces are respectively the inner side surfaces of the two inner side plates.

[0008] Preferably, the outer sides of the two front side plates are each provided with a plurality of reinforcing plates.

[0009] Preferably, a plurality of reinforcing rods are connected between the two rear side plates and the two inner side plates.

[0010] Preferably, the front driving cylinders are gas cylinders or hydraulic cylinders.

[0011] Preferably, the rear driving cylinders are gas cylinders or hydraulic cylinders.

[0012] Preferably, the front clamping seat comprises a front main block and a front anti-skid block fixed on the front main block.

[0013] Preferably, the rear clamping seat comprises a rear main block and a rear anti-skid block fixed on the rear main block.

[0014] Preferably, the front inclined surface is provided with front guide rails on both upper and lower sides, and the two front guide rails extend obliquely, and the upper and lower sides of the front clamping seat are respectively slidably mounted on the two front guide rails.

[0015] Preferably, the rear inclined surface is provided with rear guide rails on both upper and lower sides, and the two rear guide rails extend obliquely, and the upper and lower sides of the rear clamping seat are respectively slidably mounted on the two rear guide rails.

[0016] The utility model discloses have obvious advantages and beneficial effects compared with prior art, specifically speaking, from the above technical scheme can know:

[0017] By utilizing two front drive cylinders to drive two front clamping seats to move back and forth along two front inclined surfaces and approach or move away from each other, and utilizing two rear drive cylinders to drive two rear clamping seats to move back and forth along two rear inclined surfaces and approach or move away from each other, the end of the steel pipe can be automatically clamped by selecting two front clamping seats or two rear clamping seats or both of them according to needs, and when the steel pipe is finished drawing, the end of the steel pipe can be automatically loosened, without manual operation, which is very simple and flexible, and is beneficial to improve production efficiency and bring convenience to production operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional schematic diagram of the preferred embodiment of the utility model;

[0019] Figure 2 It is the three-dimensional schematic diagram of another angle of the preferred embodiment of the utility model;

[0020] Figure 3 It is the three-dimensional schematic diagram of still another angle of the preferred embodiment of the utility model;

[0021] Figure 4 It is the sectional view of the preferred embodiment of the utility model;

[0022] Figure 5 It is another sectional view of the preferred embodiment of the utility model.

[0023] Explanation of figure mark:

[0024] 10, base 11, bottom plate

[0025] 12, rear seat plate 13, front side plate

[0026] 14, rear side plate 15, inner side plate

[0027] 16, reinforcing plate 17, reinforcing rod

[0028] 101, insertion cavity 102, front inclined surface

[0029] 103, rear inclined surface 104, connecting hole

[0030] 105, front guide rail 106, rear guide rail

[0031] 20, front clamping seat 21, front body block

[0032] 22, front anti-skid block 201, front clamping opening

[0033] 30, front drive cylinder 31, front piston rod

[0034] 40, rear clamping seat 41, rear body block

[0035] 42, rear anti-skid block 401, rear clamping opening

[0036] 50, rear drive cylinder 51, rear piston rod

[0037] 60, roller DETAILED DESCRIPTION

[0038] Please refer to Figures 1 to 5 The specific structure of the preferred embodiment of the utility model is shown, which comprises a base 10, two front clamping seats 20, two front drive cylinders 30, two rear clamping seats 40 and two rear drive cylinders 50.

[0039] The base 10 is provided with an insertion cavity 101 with an opening facing forward for inserting the steel pipe, the insertion cavity 101 is provided with two front inclined surfaces 102 and two rear inclined surfaces 103, the two front inclined surfaces 102 are opposite to each other and are spread in a spread shape, the two rear inclined surfaces 103 are located behind the two front inclined surfaces 102, and the two rear inclined surfaces 103 are opposite to each other and are spread in a spread shape, and the bottom of the base 10 is provided with a plurality of rotatable pulleys 60. Specifically, the base 10 comprises a bottom plate 11, a rear seat plate 12, two front side plates 13, two rear side plates 14 and two inner side plates 15; a plurality of pulleys 60 are arranged on the bottom plate 11, the rear seat plate 12 is vertically arranged on the rear side of the bottom plate 11, and the rear seat plate 12 is provided with a connecting hole 104 for connecting with an external traction device, the two front side plates 13 are symmetrically arranged and vertically arranged on the bottom plate 11 in a spread shape, the two front inclined surfaces 102 are respectively the inner side surfaces of the two front side plates 13, the two rear side plates 14 are horizontally and vertically arranged on the bottom plate 11, the two rear side plates 14 are respectively located behind the two front side plates 13, the two inner side plates 15 are respectively located on the inner side of the two rear side plates 14, the two inner side plates 15 are symmetrically arranged and vertically arranged on the bottom plate 11 in a spread shape, and the two rear inclined surfaces 103 are respectively the inner side surfaces of the two inner side plates 15. In addition, the outer sides of the two front side plates 13 are respectively provided with a plurality of reinforcing plates 16. The two rear side plates 14 and the two inner side plates 15 are connected by a plurality of reinforcing rods 17. In addition, the upper and lower sides of the front inclined surface 102 are respectively provided with front guide rails 105, and the two front guide rails 105 are inclinedly extended; the upper and lower sides of the rear inclined surface 103 are respectively provided with rear guide rails 106, and the two rear guide rails 106 are inclinedly extended.

[0040] The two front clamping seats 20 are located in the insertion cavity 101 and are respectively slidably mounted on the two front inclined surfaces 102, the two front clamping seats 20 are respectively moved back and forth along the two front inclined surfaces 102 to approach or move away from each other, and a front clamping opening 201 for clamping the steel pipe is formed between the two front clamping seats 20. In this embodiment, the upper and lower sides of the front clamping seat 20 are respectively slidably mounted on the two front guide rails 105, so that the front clamping seat 20 slides back and forth smoothly. In addition, the front clamping seat 20 comprises a front main body block 21 and a front anti-skid block 22 fixed on the front main body block 21, so as to more firmly clamp the steel pipe.

[0041] The two front drive cylinders 30 are symmetrically arranged in the insertion cavity 101, the rear ends of the two front drive cylinders 30 are hinged to the base 10, the front ends of the two front drive cylinders 30 are respectively provided with front piston rods 31, and the front ends of the two front piston rods 31 are respectively hinged to the two front clamping seats 20. In this embodiment, the front drive cylinder 30 is a gas cylinder or a hydraulic cylinder, which is not limited.

[0042] The two rear clamping seats 40 are located in the insertion cavity 101 and are respectively slidably mounted on the two rear inclined surfaces 103. The two rear clamping seats 40 move along the two rear inclined surfaces 103 to approach or move away from each other, and a rear clamping opening 401 for clamping the steel pipe is formed between the two rear clamping seats 40. In this embodiment, the upper and lower sides of the rear clamping seat 40 are respectively slidably mounted on the two rear guide rails 106, so that the rear clamping seat 40 slides smoothly back and forth. The rear clamping seat 40 includes a rear main block 41 and a rear anti-skid block 42 fixed to the rear main block 41, so as to more firmly clamp the steel pipe.

[0043] The two rear drive cylinders 50 are symmetrically arranged in the insertion cavity 101. The rear ends of the two rear drive cylinders 50 are hinged to the base 10, and the front ends of the two rear drive cylinders 50 each extend a rear piston rod 51. The front ends of the two rear piston rods 51 are respectively hinged to the two rear clamping seats 40. In this embodiment, the rear drive cylinder 50 is not limited to be a gas cylinder or a hydraulic cylinder.

[0044] The working principle of this embodiment is described in detail as follows:

[0045] In use, the two front clamping seats 20 or the two rear clamping seats 40 or the two front clamping seats 20 and the two rear clamping seats 40 can be selected to clamp and fix the steel pipe according to needs. The two front clamping seats 20 and the two rear clamping seats 40 are taken as an example to be described below:

[0046] First, the connecting hole 104 of the base 10 is connected with an external traction device. Then, the end of the steel pipe is inserted into the opening of the insertion cavity 101 after passing through the drawing die. Then, the two front drive cylinders 30 are operated to drive the two front clamping seats 20 to move along the front inclined surfaces 102 to approach each other to clamp and fix the front side position of the end of the steel pipe. At the same time, the two rear drive cylinders 50 are operated to drive the two rear clamping seats 40 to move along the rear inclined surfaces 103 to approach each other to clamp and fix the rear side position of the end of the steel pipe. Then, the traction device is operated to drive the base 10 to move backward, and the steel pipe moves backward with the base 10 and passes through the drawing die to realize drawing of the steel pipe, so as to change the size or shape of the steel pipe. When the drawing of the steel pipe is completed, the two front drive cylinders 30 and the two rear drive cylinders 50 are operated again to drive the two front clamping seats 20 to move in the reverse direction along the front inclined surfaces 102 to move away from each other, and at the same time, the two rear drive cylinders 50 drive the two rear clamping seats 40 to move in the reverse direction along the rear inclined surfaces 103 to move away from each other, so as to release the end of the steel pipe. At this time, the steel pipe can be taken down, and the base 10 is reset to the front to draw the next steel pipe.

[0047] The design emphasis of the utility model is: through the utilization of two front drive cylinders respectively drive two front clamping seats along two front inclined planes to and fro and each other close or far away, through the utilization of two rear drive cylinders respectively drive two rear clamping seats along two rear inclined planes to and fro and each other close or far away, can select two front clamping seats or two rear clamping seats or two front clamping seats and two rear clamping seats cooperation according to need to the end of steel pipe and carry out automatic clamping, when steel pipe completes drawing, can loosen the end of steel pipe automatically, need not manual operation, operation is very simple and flexible, be favorable to the improvement production efficiency, bring the convenience for production operation.

[0048] The technical principles of the utility model are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the utility model, and cannot be interpreted in any way as a limitation on the protection scope of the utility model. Based on the explanation here, those skilled in the art can think of other specific embodiments of the utility model without creative labor, and these embodiments will all fall within the protection scope of the utility model.

Claims

1. A trolley device for pulling steel pipes, characterized in that: The device includes a base, two front clamping seats, two front drive cylinders, two rear clamping seats, and two rear drive cylinders. The base has a forward-opening insertion cavity for inserting a steel pipe. The insertion cavity contains two front inclined surfaces and two rear inclined surfaces. The two front inclined surfaces face each other and open in a V-shape, while the two rear inclined surfaces are located behind the two front inclined surfaces and also face each other in a V-shape. The bottom of the base is equipped with multiple rolling pulleys. The two front clamping seats are located in the insertion cavity and are slidably mounted on the two front inclined surfaces. The two front clamping seats move back and forth along the two front inclined surfaces, moving closer to or further away from each other. A front clamping opening for clamping the steel pipe is formed between the two front clamping seats. The drive cylinders are symmetrically arranged in the insertion cavity. The rear ends of the two front drive cylinders are hinged to the base, and the front ends of the two front drive cylinders extend out to form front piston rods. The front ends of the two front piston rods are respectively hinged to the two front clamping seats. The two rear clamping seats are located in the insertion cavity and are slidably mounted on the two rear inclined surfaces. The two rear clamping seats move back and forth along the two rear inclined surfaces, moving closer or further away from each other. A rear clamping opening for clamping the steel pipe is formed between the two rear clamping seats. The two rear drive cylinders are symmetrically arranged in the insertion cavity. The rear ends of the two rear drive cylinders are hinged to the base, and the front ends of the two rear drive cylinders extend out to form rear piston rods. The front ends of the two rear piston rods are respectively hinged to the two rear clamping seats.

2. The trolley device for steel pipe pulling as described in claim 1, characterized in that: The base includes a base plate, a rear seat plate, two front side plates, two rear side plates, and two inner side plates. Multiple rollers are mounted on the base plate. The rear seat plate is vertically positioned on the rear side of the base plate. The two front side plates are symmetrically arranged left and right and vertically positioned on the base plate in a V-shape. The two front inclined surfaces are the inner surfaces of the two front side plates. The two rear side plates are parallel to each other and vertically positioned on the base plate. The two rear side plates are located behind the two front side plates. The two inner side plates are located inside the two rear side plates. The two inner side plates are symmetrically arranged left and right and vertically positioned on the base plate in a V-shape. The two rear inclined surfaces are the inner surfaces of the two inner side plates.

3. The trolley device for steel pipe pulling as described in claim 2, characterized in that: Multiple reinforcing plates are provided on the outer sides of both front side panels.

4. The trolley device for steel pipe pulling as described in claim 2, characterized in that: Multiple reinforcing rods are connected between the two rear side plates and the two inner side plates.

5. The trolley device for steel pipe pulling as described in claim 1, characterized in that: The front drive cylinder is either a pneumatic cylinder or a hydraulic cylinder.

6. The trolley device for steel pipe pulling as described in claim 1, characterized in that: The rear drive cylinder is either a pneumatic cylinder or a hydraulic cylinder.

7. The trolley device for steel pipe pulling as described in claim 1, characterized in that: The front clamping seat includes a front main body block and a front anti-slip block fixed on the front main body block.

8. The trolley device for steel pipe pulling as described in claim 1, characterized in that: The rear clamping seat includes a rear main body block and a rear anti-slip block fixed on the rear main body block.

9. The trolley device for steel pipe pulling as described in claim 1, characterized in that: The front inclined surface is provided with front guide rails on both the upper and lower sides. The two front guide rails extend at an angle, and the upper and lower sides of the front clamping seat are slidably mounted on the two front guide rails respectively.

10. The trolley device for steel pipe pulling as described in claim 1, characterized in that: The upper and lower sides of the rear inclined surface are provided with rear guide rails, which extend at an angle. The upper and lower sides of the rear clamping seat are slidably mounted on the two rear guide rails respectively.

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