Hydraulic pipe drawing machine

Abstract

The utility model discloses a hydraulic pipe drawing machine which comprises two gear seats which are distributed oppositely, the two gear seats are connected through adjusting bolts, a herringbone gear is installed in each gear seat in a rotating mode, a gap is formed between the two herringbone gears, a hydraulic motor on each gear seat is connected with a wheel shaft of the corresponding herringbone gear, and the herringbone gears are connected with the hydraulic motor. And the hydraulic motor drives the herringbone gear in the corresponding gear seat to rotate. According to the utility model, the continuous pulling function of metal pipes with different pipe diameters can be realized quickly, safely and efficiently, and the labor intensity of workers can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of pipe extracting machines, in particular to a hydraulic pipe extracting machine. Background Art

[0002] At present, the tube sheet replacement in engineering basically adopts manual clamping of the tube with pliers and the auxiliary hammering method to pull the metal tube out of the tube sheet. This tube extraction method is inefficient and labor-intensive, so it is difficult to apply to the tube replacement of a large number of tubes in large heat exchangers. Utility Model Content

[0003] The utility model provides a hydraulic pipe extracting machine to solve the problem of manual pipe extraction when replacing pipes on a pipe plate in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The hydraulic pipe extraction machine is characterized in that it includes two relatively distributed gear seats, the two gear seats are connected by an adjusting bolt, the spacing between the two gear seats is adjusted by the adjusting bolt, a herringbone gear is rotatably installed in each gear seat, the herringbone gears in the two gear seats are opposite and axially parallel to each other, there is a gap between the herringbone gears in the two gear seats, a hydraulic motor is installed on each gear seat, the output end of the hydraulic motor is connected to the axle of the herringbone gear in the corresponding gear seat, and the herringbone gear in the corresponding gear seat is driven by the hydraulic motor to rotate.

[0006] Furthermore, a protective cover covering the hydraulic motor is fixedly connected to one of the gear seats.

[0007] Furthermore, the shield is connected with a handrail.

[0008] Furthermore, a guide seat is provided in the gap between the two gear seats, and the two gear seats are respectively connected to two symmetrical surfaces of the guide seat through adjusting bolts.

[0009] Furthermore, it also includes a guide tube, one end of which is connected and fixed to the end of the guide seat.

[0010] The utility model clamps the tube of the tube sheet by two herringbone gears, and then uses a hydraulic motor to drive the herringbone gears to rotate, so as to extract the tube from the tube sheet. The distance between the two gear seats is adjustable, and the distance between the herringbone gears can be adjusted to be suitable for tubes of different specifications. When extracting the tube, the guide tube can guide the tube.

[0011] Compared with the prior art, the utility model drives a pair of herringbone gears through a hydraulic motor to rotate and engage pipes of different diameters, thereby being able to quickly, safely and efficiently realize the continuous extraction function of metal pipes of different diameters, having the advantages of high efficiency, labor saving and safety, without the need for manual direct pipe extraction, and being able to greatly reduce manual labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view of the structure of an embodiment of the utility model.

[0013] Figure 2 It is a front view of the structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] like Figure 1 , Figure 2 As shown, this embodiment discloses a hydraulic pipe extraction machine, including two gear seats 1 symmetrically distributed on the left and right, with a gap between the two gear seats 1, and guide seats 2 are respectively provided on the upper and lower sides of the gap, wherein the upper and lower parts of one gear seat 1 are respectively connected to the left side parts of the two guide seats 2 through axially horizontal adjustment bolts 3, and the upper and lower parts of the other gear seat 1 are respectively connected to the right side parts of the two guide seats 2 through axially horizontal adjustment bolts, thereby when the adjusting bolt 3 is rotated, the distance between the corresponding gear seat 1 and the guide seat 2 can be adjusted, thereby adjusting the distance between the two gear seats 1.

[0016] A herringbone gear 5 is rotatably mounted inside each gear seat 1 via an axially vertical gear shaft 4 . The herringbone gears 5 of the two gear seats 1 are bilaterally symmetrical, and there is a gap between the herringbone gears 5 in the two gear seats 1 .

[0017] A hydraulic motor 6 is fixed on the top of each gear seat 1, and the output shaft of the hydraulic motor 6 extends vertically downward into the corresponding gear seat 1 and is coaxially connected to the upper end of the corresponding gear shaft 4. The two hydraulic motors 6 are connected in parallel or in series through the oil pipeline 10 and then connected to an external oil source. The hydraulic motor 6 drives the herringbone gear 5 in the corresponding gear seat 1 to rotate.

[0018] A shield 7 is fixed on the right gear seat 1, and the shield 7 covers the hydraulic motor 6 on the corresponding gear seat 1, and the shield 7 also extends horizontally to cover the hydraulic motor on the other gear seat on the left. A handrail 9 is fixedly connected to the back of the shield 7.

[0019] The rear ends of the two guide seats 2 are connected with a guide pipe 8 , and the front end of the guide pipe 8 is connected with the area defined by the two guide seats 2 and the two herringbone gears 5 .

[0020] During operation, the staff holds the handrail 9, aligns the front end of the area determined by the two guide seats 2 and the two herringbone gears 5 with the pipe to be drawn, and adjusts the spacing of the two herringbone gears 5 to clamp the pipe. Then, when the output shafts of the two hydraulic motors 6 rotate, the two herringbone gears rotate, thereby pulling out the pipe from the tube sheet through the herringbone gears, and the pipe enters the guide pipe 8 from the area determined by the two guide seats 2 and the two herringbone gears 5. Due to the engagement and rotation of the left and right herringbone gears, the pipe can be continuously drawn out. The spacing of the gear seat 1 is adjusted by adjusting the bolt 3, and then the spacing of the two herringbone gears 5 is adjusted, so that it can be applied to pipes of different outer diameters.

[0021] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. The embodiments described in the present invention are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. The various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. Such combinations should also be regarded as the contents disclosed in the present disclosure as long as they do not violate the concept of the present invention. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0022] The present invention is not limited to the specific details in the above-mentioned embodiments. Within the technical concept of the present invention and without departing from the design concept of the present invention, various modifications and improvements made to the technical solution of the present invention by technical personnel in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. Hydraulic pipe extractor, characterized in that: It includes two gear seats that are relatively distributed. The two gear seats are connected by adjusting bolts. The spacing between the two gear seats can be adjusted by adjusting bolts. A herringbone gear is rotatably installed in each gear seat. The herringbone gears in the two gear seats are opposite to each other and axially parallel to each other. There is a gap between the herringbone gears in the two gear seats. A hydraulic motor is installed on each gear seat. The output end of the hydraulic motor is connected to the axle of the herringbone gear in the corresponding gear seat, and the herringbone gear in the corresponding gear seat is driven by the hydraulic motor to rotate.

2. The hydraulic pipe extractor according to claim 1, characterized in that: A protective cover for covering the hydraulic motor is fixedly connected to one of the gear seats.

3. The hydraulic pipe extractor according to claim 2, characterized in that: The shield is connected with an armrest.

4. The hydraulic pipe extractor according to claim 1, characterized in that: A guide seat is arranged in the gap between the two gear seats, and the two gear seats are respectively connected to two symmetrical surfaces of the guide seat through adjusting bolts.

5. The hydraulic pipe extractor according to claim 4, characterized in that: It also includes a guide tube, one end of which is connected and fixed to the end of the guide seat.

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