CN202300242U - Orifice hydraulic clamping power assisting device - Google Patents

Abstract

The utility model relates to an orifice hydraulic clamping and boosting device, which comprises a hollow clamping body, the hollow part of the clamping body is provided with a slip seat, the slip seat is provided with slips, and the slips and the slip seat cooperate with each other. The surface is wedge-shaped, and the wedge-shaped surface is provided with rolling bodies. There are pin holes on the left and right sides of the holder body, and pin shafts are arranged in the pin holes. There is a hydraulic cylinder between the bottom ends of the front and rear connecting rods on the same side. The hydraulic cylinder includes a cylinder liner, a piston and a piston rod. A spring is provided on one side of the inner piston, an oil filling port is provided on the cylinder body on the other side of the piston, and the top of the connecting rod is connected with the slips. The utility model has the advantages of simple structure, convenient installation and disassembly, and low cost; the device can solve the problem of light weight of the drilling tool and relatively small clamping force when the self-weight clamper hole is shallow, which not only ensures clamping safety, but also meets Unscrew required.

Description

Orifice hydraulic clamping assist device

technical field

The utility model relates to a clamping booster device, which is an aperture clamping device for a rope core drilling rod, and belongs to the field of auxiliary tools for mechanical core drilling.

Background technique

At present, a kind of orifice holder commonly used in wireline core drilling is a self-weight holder, which has the characteristics of simple structure and convenient installation. Especially when the hole is deep, due to the effect of the weight of the drill string, the clamping effect is obvious. The structure of this kind of clamper is shown in Figure 3 and Figure 4. The slips move towards the center under the action of the inclined plane to clamp the drill pipe. The heavier the drill, the greater the friction between the drill pipe and the slips. The greater the distance the slips move downward, the greater the blessing force towards the center. However, when the hole depth of this kind of holder is shallow at the initial stage of drilling, the friction between the drill pipe and the slips is small due to the light weight of the drilling tool. Because there is no clamping, the drill pipe cannot be unscrewed quickly, and at the same time, the drill pipe rotates in the wedge-shaped slips and the surface is damaged by the hard slips, thereby seriously affecting the service life of the drill pipe.

Utility model content

The utility model is an orifice hydraulic clamping booster device provided in order to overcome the deficiencies of the prior art. It is safe and can meet the unscrewing requirements.

The technical scheme that the utility model adopts:

An orifice hydraulic clamping assist device, which includes a hollow clamper body, a slip seat is provided in the hollow part of the clamper body, a slip is provided in the slip seat, and the mating surface of the slip and the slip seat is a wedge-shaped surface , the wedge-shaped surface is provided with rolling bodies, the left and right sides of the holder body are provided with pin holes, and the pin holes are provided with pin shafts. Both ends of the pin shaft are located outside the holder body and are hinged with connecting rods. There is a hydraulic cylinder between the bottom ends of the rods. The hydraulic cylinder includes a cylinder liner, a piston and a piston rod. One end of the hydraulic cylinder is connected to the cylinder liner and the connecting rod, and the other end of the piston rod is connected to the connecting rod through pins. A spring is provided, an oil inlet is provided on the cylinder body on the other side of the piston, and the top of the connecting rod is connected with the slips.

The top of above-mentioned connecting rod is connected with slip through latch.

The technical effect that the utility model obtains:

1. The utility model has simple structure, convenient installation and disassembly, and low cost;

2. Using this device can solve the problem of small clamping force due to the light weight of the drilling tool when the self-weight clamper hole is shallow. It can not only ensure clamping safety, but also meet the requirements of unscrewing and unloading.

Description of drawings

Fig. 1 is existing self-weight gripper;

Fig. 2 is a top view of Fig. 1;

Fig. 3 is the structural representation of the utility model;

FIG. 4 is a top view of FIG. 3 .

Detailed ways

Embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

Referring to Fig. 1-4, an orifice hydraulic clamping booster device includes a hollow clamper body 1, a slip seat 2 is provided in the hollow part of the clamper body, and slips 4 are arranged in the slip seat, and the slips The mating surface with the slip seat is a wedge-shaped surface, and the wedge-shaped surface is provided with a rolling body 3, and a pin hole is provided on the left and right sides of the holder body, and a pin shaft 7 is arranged in the pin hole, and the two ends of the pin shaft are located outside the clamp body and are hinged. Connecting rod 6, a hydraulic cylinder is arranged between the bottom ends of the same side connecting rods at the front and rear of the holder body. The hydraulic cylinder includes a cylinder sleeve 10, a piston 12 and a piston rod 8. One end of the hydraulic cylinder is connected to the cylinder sleeve and the connecting rod, and the other end is the piston. The rod and the connecting rod are all connected by pins, a spring 9 is provided on one side of the piston in the cylinder liner, an oil inlet 11 is provided on the cylinder body on the other side of the piston, and the top of the connecting rod is connected with the slips. The top of the connecting rod is connected with the slips through the latch 5, and the latch extends on the front and back sides of the holder.

The utility model is a mechanical self-weight orifice clamping booster device, which is a set of hydraulically controlled connecting rod mechanism, and a set of hydraulically controlled connecting rod device is installed , the hydraulic cylinder adopts the method of spring tightening and hydraulic opening. When the hydraulic cylinder is supplied with pressure oil, under the action of pressure oil, the piston rod and the cylinder liner move in the opposite direction, and the connecting rod mechanism drives the latch to rotate at a certain angle, and the clamp is pressed. The shoe is forced to move down along the holder, and under the action of the slip wedge, the slip moves to the center, which can more effectively clamp the drill pipe in the center hole. In this system, the piston rod and the cylinder liner move in the opposite direction, and the force on the left and right slips is the same. Under the guarantee of the processing and installation accuracy of the connecting rod, the force on the left and right slips and the moving distance are even, and the drill pipe can be clamped more effectively. The holding force can better solve the problem that the drill pipe cannot be clamped due to the light weight of the drilling tool in the shallow hole stage. This structure is easy to modify the existing mechanical self-weight orifice holder, just drill a hole on the left and right sides of the existing orifice holder according to the position requirements, and install the hydraulic clamping device on it. When the drilling is deep, if the hydraulic auxiliary device is not needed, the whole device can be taken down by dismantling the long pin, and the holder can be used according to the original structure. The positive and negative forces of the holding force are both applied to the bolt, and the power utilization rate is high. When the pressure oil in the system is unloaded, under the action of the spring, the oil cylinder retracts, and the latch is opened through the connecting rod. At this time, the holder can be used in a purely mechanical way, and the slips can be easily raised to facilitate the lifting and lowering of the drilling tool. . The device is easy to install and easy to maintain.

The scope of protection of the utility model is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and deformations to the utility model without departing from the scope and spirit of the utility model. If these changes and deformations fall within the scope of the claims of the utility model and their equivalent technologies, the intent of the utility model is to include these changes and deformations.

Claims (2)

1. aperture hydraulic pressure clamping booster, it comprises hollow clamping body (1), clamping body cavity is provided with slip spider (2); Be provided with slips (4) in the slip spider, slips and slip spider fitting face are lozenges, and lozenges is provided with rolling element (3); It is characterized in that: respectively be provided with pin-and-hole about the clamping body, be provided with bearing pin (7) in the pin-and-hole, the bearing pin two ends are positioned at the cramping body outside and all are hinged with connecting rod (6); Be provided with hydraulic cylinder between the bottom of homonymy connecting rod before and after the clamping body; Hydraulic cylinder comprises cylinder sleeve (10), piston (12) and piston rod (8), and an end cylinder sleeve of hydraulic cylinder all is connected through pin with connecting rod with connecting rod, other end piston rod, and cylinder sleeve inner carrier one side is provided with spring (9); The cylinder body of piston opposite side is provided with oil-in (11), and the connecting rod top is connected with described slips.

2. hydraulic pressure clamping booster in aperture according to claim 1 is characterized in that: the top of said connecting rod is connected with slips through latch (5).

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