CN219387836U

CN219387836U - Fishing device for drill rod

Info

Publication number: CN219387836U
Application number: CN202320764666.9U
Authority: CN
Inventors: 郑江波; 金亮亮; 史博研; 马志凯
Original assignee: China Railway Liuyuan Group Co Ltd
Current assignee: China Railway Liuyuan Group Co Ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-07-21
Anticipated expiration: 2033-04-10

Abstract

The utility model provides a salvaging device for a drill rod, which belongs to the technical field of geotechnical engineering investigation and comprises a drill rod joint, a telescopic clamp rod and salvaging pliers, wherein the upper end of the telescopic clamp rod is fixed with the drill rod joint, the lower end of the telescopic clamp rod is fixed with the salvaging pliers, and the jaw caliber of the salvaging pliers is 1-2cm larger than the diameter of a left drill rod and smaller than the diameter of the drill rod joint. The length of the utility model can be adjusted, and the broken and falling drill rod can be salvaged under various conditions, thereby reducing the influence on subsequent construction and reducing unnecessary loss.

Description

Fishing device for drill rod

Technical Field

The utility model belongs to the technical field of geotechnical engineering investigation, and particularly relates to a fishing device for a drill rod.

Background

With the rapid development of urban construction in China, the geological conditions of various places in China are greatly different, and the phenomenon that a drill rod is broken off and falls off frequently occurs in the drilling process of a geotechnical engineering exploration site. The remained drill pipes and core pipes cause unnecessary trouble to subsequent construction, and especially the construction of underground intervals and pile foundations has larger influence. In addition, it is a property loss for the unit itself. Therefore, it is necessary to use a tool to salvage broken and dropped drill pipe.

The Chinese patent of the issued publication No. CN217712479U discloses a fisher for breaking a drill rod, which comprises a front section of a salvaging hook and a rear section of the salvaging hook, wherein the surface of the front section of the salvaging hook is fixedly connected with the surface of the rear section of the salvaging hook, the surface of the front section of the salvaging hook is provided with a clamping groove, the top surface of the front section of the salvaging hook is fixedly connected with a connecting column, the surface of the connecting column is provided with a male connector, and the surface of the male connector is fixedly connected with a drilling tool connecting rod. The broken drill rod is found in the hole, the drilling tool is slowly lifted until the position below the catcher of the broken drill rod enters the ten-centimeter clamping groove, and the salvaging drilling tool is lifted until the device is rotated, so that the salvaging is successful, the salvaging device is simple in structure, and the salvaging device of different types can be designed according to the diameter and the aperture of the drill rod conveniently. The length of the existing drill rod salvaging device is fixed and is short, the shorter drill rod salvaging device is more beneficial to being installed with a drilling machine, but in some cases, the operation difficulty of salvaging can be increased due to the shorter length, and at the moment, the longer length drill rod salvaging device is more beneficial to salvaging the drill rod which is left behind.

Disclosure of Invention

The utility model aims at the technical problems in the prior art, and provides a salvaging device for a drill rod, which can salvage broken and falling off residual drill rods under various conditions, reduce the influence on subsequent construction and reduce unnecessary loss.

The technical scheme adopted by the utility model is as follows: the utility model provides a fishing device of drilling rod, includes drilling rod joint, scalable pincers pole and salvage pincers, scalable pincers pole upper end is fixed with the drilling rod joint, and the lower extreme is fixed with salvage pincers, salvage pincers keep silent the bore and be greater than the diameter of leaving behind the drilling rod 1-2cm, just be less than the diameter of drilling rod joint.

Further, the telescopic clamp rod comprises an upper clamp rod and a lower clamp rod, the upper clamp rod is fixed with the drill rod joint, the lower clamp rod is fixed with the fishing clamp, and the upper clamp rod and the lower clamp rod are provided with bolt holes and are connected through bolts.

Further, the fishing pliers are perpendicular to the lower pliers leg.

Compared with the prior art, the utility model has the following beneficial effects: the telescopic clamp rod is used for connecting the drill rod joint and the salvaging clamp, so that the length of the telescopic clamp rod is adjustable, the requirements of different conditions can be met, the length can be adjusted according to actual requirements, the installation and salvaging operation are considered, the salvaging of broken and falling drill rods is realized, the influence on subsequent construction is reduced, and unnecessary loss is reduced. The telescopic clamp rod is designed to be an upper clamp rod and a lower clamp rod which are fixedly connected by bolts, and the length is convenient to adjust. The utility model has simple structure, convenient implementation and maintenance and strong practicability.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is a schematic structural view of a fishing clamp according to an embodiment of the present utility model.

In the figure: 1-drill rod joint, 2-upper clamp rod, 3-lower clamp rod, 4-bolt hole, 5-bolt and 6-fishing clamp.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and the specific embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model.

An embodiment of the present utility model provides a fishing apparatus for drill pipe, as shown in figures 1-2, comprising a drill pipe joint 1, a telescopic clamp rod and a fishing clamp 6. The upper end of the telescopic clamp rod is fixed with the drill rod joint 1, the lower end of the telescopic clamp rod is fixed with the fishing clamp 6, and the fishing clamp 6 is perpendicular to the telescopic clamp rod. The jaw caliber of the fishing pliers 6 is 1-2cm larger than the diameter of the left drill rod and smaller than the diameter of the drill rod joint 1.

In this embodiment, the telescopic clamp rod includes an upper clamp rod 2 and a lower clamp rod 3, the upper clamp rod 2 is fixed with the drill pipe joint 1, and the lower clamp rod 3 is fixed with the fishing clamp 6. The upper clamp rod 2 is provided with a plurality of bolt holes 4, and the lower clamp rod 3 is provided with a bolt hole 4. The upper clamp bar 2 and the lower clamp bar 3 are connected by bolts 5. The bolt 5 is connected with different bolt holes 4 of the upper clamp rod 2 to realize the adjustment of the length of the telescopic clamp rod.

The drill rod is broken, falls off and the like, and is left in the drilled hole. According to the field condition, whether the length of the telescopic clamp rod is adjusted is selected. By default, the telescoping clamp bar is the shortest length. The drill rod joint 1 of the device is connected to a drill rod of a drilling machine, the device is used for descending into the drilling hole, when the salvage clamp 6 bumps against a left drill rod, the salvage clamp is lowered by 30-40 cm again, then the upper drill rod is rotated to drive the salvage clamp 6 to rotate, so that the salvage clamp 6 buckles the left drill rod, then the drill rod is slowly lifted upwards, the jaw of the salvage clamp 6 is clamped at the head of the left drill rod, then the salvage clamp can be used for boosting the left drill rod upwards, and the left drill rod is slowly salvaged.

The present utility model has been described in detail by way of examples, but the description is merely exemplary of the utility model and should not be construed as limiting the scope of the utility model. The scope of the utility model is defined by the claims. In the technical scheme of the utility model, or under the inspired by the technical scheme of the utility model, similar technical schemes are designed to achieve the technical effects, or equivalent changes and improvements to the application scope are still included in the protection scope of the patent coverage of the utility model.

Claims

1. The utility model provides a fishing device of drilling rod, its characterized in that includes drilling rod joint, scalable pincers pole and salvage pincers, scalable pincers pole upper end is fixed with the drilling rod joint, and the lower extreme is fixed with salvage pincers, salvage pincers keep silent the bore and be greater than the diameter of leaving behind the drilling rod 1-2cm, just be less than the diameter of drilling rod joint.

2. The fishing device for drill pipes as recited in claim 1, wherein the telescopic clamp bar comprises an upper clamp bar and a lower clamp bar, the upper clamp bar is fixed with the drill pipe joint, the lower clamp bar is fixed with the fishing clamp, and bolt holes are formed in the upper clamp bar and the lower clamp bar and are connected through bolts.

3. A fishing device for drill pipe as claimed in claim 2, wherein the fishing clamp is perpendicular to the lower clamp rod.