CN210622748U

CN210622748U - Drilling bucket and rotary drilling rig

Info

Publication number: CN210622748U
Application number: CN201921770882.4U
Authority: CN
Inventors: 孙玉杰; 孙国平; 王龙刚
Original assignee: Beijing Sany Intelligent Technology Co Ltd
Current assignee: Beijing Sany Intelligent Technology Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-05-26
Anticipated expiration: 2029-10-18

Abstract

The utility model provides a rig is dug with digging soon to rig relates to engineering machine tool technical field, include: the connecting part is connected with the drill rod; the cylinder body comprises a first half cylinder body and a second half cylinder body which are mutually involutory, the first half cylinder body is hinged with the connecting part, and the second half cylinder body is connected with the connecting part; the tip of head rod and second connecting rod links to each other, and simultaneously, the other end of head rod and the interior wall connection of first half barrel, the other end of second connecting rod can be connected with the unit head pressure disk. Through second connecting rod to the head rod and to first half barrel again and form lever structure promptly, when the power head pressure disk produced relative displacement for the drilling rod, the drive second connecting rod produced relative motion for the barrel, then drives the head rod motion, promotes first half barrel and rotates towards the direction of keeping away from second half barrel, accomplishes and unloads soil.

Description

Drilling bucket and rotary drilling rig

Technical Field

The utility model relates to an engineering machine tool technical field particularly, relates to a drilling bucket and dig rig soon.

Background

In the infrastructure construction process, drilling construction is usually required, and along with the progress of science and technology, the automation degree is improved, and drilling construction is generally completed by using a rotary drilling rig. The rotary drilling rig is a comprehensive drilling rig and can be matched with various drilling buckets of different types to meet the drilling requirements of different strata. Therefore, the rotary drilling rig is widely applied.

During the process that the drilling bucket continuously drills along with the rotation and the downward pressing of a driving drill rod of the rotary drilling rig, soil scraps are filled into the drilling bucket through a valve at the bottom of the drilling bucket. And after the hopper is full, the drill hole is moved out, the bottom door is opened, and the purpose of unloading soil is realized by the dead weight of the soil.

However, when drilling is performed in an area with high soil viscosity, the soil with high viscosity usually sticks to the inner wall of the drill bucket, so that the soil cannot completely fall off, and further the construction efficiency is affected. Although the drill rod can rotate at a high speed to achieve the aim of throwing soil, the high-speed rotation of the drilling bucket not only enables soil to be tightly attached to the inner wall of the drilling bucket due to centrifugal force, but also is limited by the rotating speed during soil unloading. The rotation speed is low, soil unloading can not be carried out, and the rotation speed is high, so that the drilling bucket can be repeatedly and rapidly rotated forwards and backwards to generate great impact damage to a motor of the power head due to the fact that the power head has great mass.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the not enough among the above-mentioned prior art, provide a drilling bucket and dig rig soon to solve current drilling bucket and be difficult to unload the problem of native operation to the great soil property of viscidity.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

the utility model discloses an aspect provides a drill bucket, include: the end parts of the first connecting rod and the second connecting rod are connected, the connecting part is connected with the cylinder; the connecting part is used for connecting with a drill rod; the barrel comprises a first half barrel and a second half barrel which are mutually involutory, the first half barrel is hinged with the connecting part, the second half barrel is connected with the connecting part, and the first half barrel can rotate towards the direction far away from the second half barrel; the other end of the first connecting rod is connected with the inner wall of the first half cylinder, the other end of the second connecting rod is used for connecting the power head pressure plate, and the second connecting rod drives the first connecting rod to push the first half cylinder to rotate under the driving of the power head pressure plate.

Optionally, the first half barrel includes the body and the fixed block of fixed setting on the inner wall of body, and the tip and the fixed block of first connecting rod are articulated.

Optionally, the end of the first connecting rod is welded to the first half cylinder.

Optionally, the first connecting rod is located inside the cylinder, a limiting hole is further formed in one end, close to the connecting portion, of the first half cylinder, and the second connecting rod penetrates through the limiting hole to be connected with the first connecting rod.

Optionally, a protrusion is further arranged on the second connecting rod, the protrusion is located outside the cylinder, an elastic piece is further sleeved on the second connecting rod, and the elastic piece is located between the protrusion and the cylinder.

Optionally, a limiting part is further arranged on the connecting part, and the limiting part abuts against the protrusion to limit the depth of the second connecting rod in the cylinder.

Optionally, the drilling bucket further comprises a third connecting rod and a fourth connecting rod, wherein the ends of the third connecting rod and the fourth connecting rod are connected; the second half cylinder body is hinged with the connecting part and can rotate towards the direction far away from the first half cylinder body; the other end of the third connecting rod is connected with the inner wall of the second half cylinder, and the other end of the fourth connecting rod is used for connecting a power head pressure plate.

Optionally, the drilling bucket further comprises a fifth connecting rod, and the second connecting rod and the fourth connecting rod are respectively connected with two end portions of the fifth connecting rod.

Optionally, bucket teeth are respectively arranged at one ends, far away from the connecting part, of the first half cylinder body and the second half cylinder body.

On the other hand, the embodiment of the utility model provides a rotary drilling rig, including drilling rod, unit head pressure plate and the above-mentioned drilling bucket of any kind; the connecting part of the drilling bucket is connected with the drill rod, and the end part of a second connecting rod of the drilling bucket is connected with the power head pressure plate; when the drilling bucket also comprises a fourth connecting rod, the end part of the fourth connecting rod is connected with the power head pressure plate.

The beneficial effects of the utility model include:

the utility model provides a drilling bucket, include: the connecting device comprises a first connecting rod, a second connecting rod, a connecting part and a barrel. The connecting part can be connected with the drill rod; the cylinder body comprises a first half cylinder body and a second half cylinder body which are mutually involutory, the first half cylinder body is hinged with the connecting part, and the second half cylinder body is connected with the connecting part; the tip of head rod and second connecting rod links to each other, and simultaneously, the other end of head rod and the interior wall connection of first half barrel, the other end of second connecting rod can be connected with the unit head pressure disk. Form lever structure through second connecting rod to head rod again to first half barrel promptly, when the unit head pressure disk produced relative displacement for the drilling rod, the relative barrel of drive second connecting rod produced relative motion, then drive the head rod motion, make the head rod can promote first half barrel to rotate towards the direction of keeping away from second half barrel under lever principle, make originally to form the opening between first half barrel and the second half barrel of closing formation complete barrel, at this moment, exist in the inside soil bits of barrel along with the rotation of first half barrel, its resultant force in the direction of gravity increases gradually, thereby can unload the great soil bits of viscidity. The problem that the opening and closing of the drilling bucket are easily restricted by the rotating speed, so that soil unloading is difficult to complete is avoided.

The utility model also provides a dig the rig soon, with foretell boring bucket use with dig the rig soon on, will bore the connecting portion and the drilling rod of fighting and link together. Correspondingly, the second connecting rod and the fourth connecting rod are respectively connected to the power head pressure plate, so that the rotary drilling rig can smoothly unload soil under the condition that the protection machinery is not damaged due to the rotating speed when the soil layer has large viscosity. And then the efficiency of operation has been improved for the progress of construction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a drilling bucket according to an embodiment of the present invention;

fig. 2 is a second schematic structural view of a drill bucket according to an embodiment of the present invention;

fig. 3 is a third schematic structural view of a drill bucket according to an embodiment of the present invention;

fig. 4 is a fourth schematic view of a structure of a drill bucket according to an embodiment of the present invention.

Icon: 100-a connecting part; 101-a cylinder body; 1011-first half cylinder; 1012-second half cylinder; 102-a second connecting rod; 103-a first connecting rod; 104-fixed block; 105-a limiting hole; 106-projection; 107-an elastic member; 108-a limiting part; 109-a fifth connecting rod; 110-a fourth connecting rod; 111-a third connecting rod; 112-bucket teeth.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention may be combined with each other, and the combined embodiments are still within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In actual drilling construction, regardless of the type of the drilling bucket, the drilling bucket is generally installed on a drill rod and driven by the drill rod to rotate along a predetermined drilling path while being pressed down. In the drilling process, soil scraps enter the interior of the drilling bucket through the valve, when the bucket is full, the valve is closed, the drilling bucket is moved out of the drilled hole to reach a soil unloading area, and soil unloading is carried out. When the conventional double-bottom sand bailing bucket is used, only a small part of soil can be unloaded for soil scraps with higher viscosity, and even the soil cannot be unloaded. When the body opening bucket is adopted for soil unloading, the aim of opening the drilling bucket for soil unloading is achieved by means of high-speed rotation, but the power motor is damaged by high rotating speed, and the service life of the power motor is shortened. Especially, the damage to the motor is larger when the soil unloading is completed through the high-speed forward and backward rotation. Therefore, the application provides a novel drilling bucket, and particularly, the novel drilling bucket can effectively unload soil with high viscosity.

An aspect of the embodiment of the present invention, referring to fig. 1 and 2, provides a drilling bucket, include: a first connecting rod 103 and a second connecting rod 102 which are connected at the ends, a connecting part 100 and a cylinder body 101; the coupling 100 is for coupling with a drill rod; the cylinder 101 comprises a first half cylinder 1011 and a second half cylinder 1012 which are mutually involutory, the first half cylinder 1011 is hinged with the connecting part 100, the second half cylinder 1012 is connected with the connecting part 100, and the first half cylinder 1011 can rotate in the direction away from the second half cylinder 1012; the other end of the first connecting rod 103 is connected with the inner wall of the first half cylinder 1011, the other end of the second connecting rod 102 is used for connecting a power head pressure plate, and the second connecting rod 102 drives the first connecting rod 103 to push the first half cylinder 1011 to rotate under the driving of the power head pressure plate.

For example, referring to fig. 1, a cylindrical body 101 is connected to one end of the connection portion 100, and in order to facilitate soil removal of soil with high viscosity, a structure in which the cylindrical body 101 is formed by aligning a first half cylindrical body 1011 and a second half cylindrical body 1012 may be adopted. The first half cylinder 1011 and the connecting portion 100 are connected in a hinged manner, and the second half cylinder 1012 can be connected with the connecting portion 100 in a connected manner. Meanwhile, an opening and closing mechanism is further arranged, so that the first half cylinder 1011 can be pushed to open or close towards the direction far away from or close to the second half cylinder 1012 under the driving of the opening and closing mechanism. When opening, first half barrel 1011 is kept away from relative second half barrel 1012, form the contained angle between the two, form an opening of unloading soil at bottom door end, along with open-ended increase, the soil bits that are close to the center in being located barrel 101 then can drop preferentially under the effect of gravity, be located the soil bits that are close to the inner wall in barrel 101, along with the increase of contained angle, hinder its power that drops, for example frictional force etc. can reduce gradually, the soil bits can crescent at the resultant force of direction of gravity promptly, thereby can be fine make it drop, make the rig fill do not rely on high rotational speed and accomplish smoothly and unload soil.

Referring to fig. 2, when the opening and closing mechanism includes a first connecting rod 103 and a second connecting rod 102, the ends of the two connecting rods are connected to each other, the other end of the first connecting rod 103 is connected to the inner wall of the first half cylinder 1011, and the other end of the second connecting rod 102 is connected to the power head pressure plate, that is, the power head pressure plate is used as the power source of the opening and closing mechanism. A lever-like structure is formed from the first connecting rod 103 to the second connecting rod 102. The power head pressure plate and the end of the second connecting rod 102 are used as force application ends, and the end of the first half cylinder 1011 and the end of the first connecting rod 103 are used as acted ends. When the power head pressure plate makes telescopic motion along the axial direction of the drill rod, in an initial state (the first half cylinder 1011 and the second half cylinder 1012 are closed), the included angle between the connected end parts of the first connecting rod 103 and the second connecting rod 102 is not equal to 90 degrees, that is, when the drilling bucket in the application is arranged along the vertical direction (the arrangement state of the drilling bucket in a vertical drilling hole), the axial length of the projection of the first connecting rod 103 on the horizontal plane is not more than the axial length of the body of the drilling bucket. Thereby ensuring that the first half cylinder 1011 can be driven by the power head pressure plate to push or pull the first half cylinder 1012 to rotate towards the direction far away from or close to the second half cylinder 1012 by the second connecting rod 102 based on the lever principle. The problem that the opening and closing of the drilling bucket are easily restricted by the rotating speed, so that soil unloading is difficult to complete is avoided. And then improve the efficiency of operation for the progress of construction. Meanwhile, the opening and closing mechanism is simple, the manufacturing cost is low, and the device is suitable for popularization and use.

The lever structure is exemplified in the following to open and close during the actual operation. After the first connecting rod 103 and the second connecting rod 102 are connected according to the mode in fig. 2, when soil is required to be unloaded, the power head pressure plate moves towards the direction of the drilling bucket along the axial direction of the drill rod, and the second connecting rod 102 is driven to move along the movement direction of the power head pressure plate, namely, the end part of the first connecting rod 103 connected with the second connecting rod 102 moves downwards along the axial direction of the drill rod or the cylinder 101. At this time, the axial length of the projection of the first connecting rod 103 in the horizontal direction gradually increases, and at the same time, the first half cylinder 1011 is pushed to rotate along the hinge portion in the direction away from the second half cylinder 1012, thereby completing the soil unloading. When the power head needs to be closed, the power head pressure plate is controlled to move towards the direction far away from the drilling bucket, the end part of the second connecting rod 102 connected with the power head pressure plate is driven to be far away from the drilling bucket, and the first connecting rod 103 is driven to pull the first half cylinder 1011 to be close to the second half cylinder 1012 until the two half cylinders are closed. First, the connection portion 100 may be connected to the drill rod in a detachable manner, such as a spline connection or a screw connection. Second, the first connecting rod 103 and the second connecting rod 102 may be bent rods or straight rods, and may be made of steel or iron. Thirdly, the opening and closing angle can be 45 degrees, and can also be 60 degrees and other reasonable values.

Optionally, the first half cylinder 1011 includes a body and a fixing block 104 fixedly disposed on an inner wall of the body, and an end of the first connecting rod 103 is hinged to the fixing block 104.

For example, in order to facilitate the stable connection between the first connecting rod 103 and the inner wall of the first half cylinder 1011, as shown in fig. 2, a fixing block 104 may be fixedly disposed on the inner wall of the body of the first half cylinder 1011, and the fixing block 104 and the end of the first connecting rod 103 may be connected together by a pin. Wherein, the fixed block 104 can be one, also can set up two as figure 2, sets up the tip of first connecting rod 103 between two fixed blocks 104, and the three uses the round pin axle to connect. The convenience of installation can be further improved, and the connection between the first connecting rod 103 and the inner wall of the body is more stable.

Optionally, the end of the first connecting rod 103 is welded to the first half cylinder 1011.

For example, the end of the first connecting rod 103 may be fixed to the inner wall of the first half cylinder 1011 by welding. The first half cylinder 1011 and the second half cylinder 1012 can be reliably opened and closed while the connection strength is improved. Meanwhile, the welding stability is higher, the process is mature, and the manufacturing cost can be reduced.

Optionally, the first connecting rod 103 is located inside the cylinder 101, a limiting hole 105 is further disposed at one end of the first half cylinder 1011 close to the connecting portion 100, and the second connecting rod 102 penetrates through the limiting hole 105 and is connected to the first connecting rod 103.

For example, in order to avoid as much as possible that external environments such as drilling interfere with the opening and closing machine to affect the opening and closing of the opening and closing machine during actual construction, as shown in fig. 2, the first connecting rod 103 moving horizontally may be disposed inside the cylinder 101, so that only a part of the second connecting rod 102 is located outside the cylinder, and since the second connecting rod 102 passes through the limiting hole 105 of the first half cylinder 1011 to be connected with the first connecting rod 103 inside the cylinder 101, and the size of the limiting hole 105 may be matched with the shaft diameter of the second connecting rod 102, so that it only moves linearly along the axial direction of the cylinder 101, the interference caused by the external environments to the opening and closing machine is small. The action effect of the opening and closing mechanism can be effectively guaranteed. In addition, the limiting hole 105 may also extend along the moving direction of the second connecting rod 102, so as to cooperate with the movement thereof along the non-vertical direction.

Optionally, a protrusion 106 is further disposed on the second connecting rod 102, the protrusion 106 is located outside the cylinder 101, an elastic member 107 is further sleeved on the second connecting rod 102, and the elastic member 107 is located between the protrusion 106 and the cylinder 101.

For example, a protrusion 106 may be further disposed on the second connecting rod 102, and the protrusion 106 may be an annular protrusion 106 that surrounds the second connecting rod 102 as shown in fig. 2, or may be a semi-annular protrusion 106 or an irregular protrusion 106, and so on. Meanwhile, the elastic part 107 can be sleeved on the second connecting rod 102, so that the second connecting rod 102 can be well buffered in the process of moving towards the direction of the cylinder 101, and damage to the opening and closing machine to a certain degree is avoided when the driving force is too large or changes suddenly. Therefore, the end of the elastic member 107 close to the cylinder 101 can abut against the cylinder 101, and when the elastic member 107 is a spring, i.e. the diameter of the limiting hole 105 should be smaller than the diameter of the spring, both ends of the spring can abut against the protrusion 106 and the cylinder 101, respectively, thereby achieving the buffering effect.

Optionally, a limiting portion 108 is further disposed on the connecting portion 100, and the limiting portion 108 abuts against the protrusion 106 to limit the depth of the second connecting rod 102 inside the barrel 101.

For example, when the second connecting rod 102 moves in a direction away from the cylinder 101, the first connecting rod 103 pulls the first half cylinder 1011 to approach the second half cylinder 1012, so as to avoid that the first half cylinder 1011 is damaged due to the continuous movement of the second connecting rod 102 after the first half cylinder 1011 has been aligned with the second half cylinder 1012, as shown in fig. 2, the connecting portion 100 may further be provided with a limiting portion 108, and when the protrusion 106 on the first half cylinder 1011 moves to the limiting portion 108 and forms an abutting relationship therewith, the trend of the continuous movement of the second connecting rod 102 may be stopped, that is, the first half cylinder 1011 and the second half cylinder 1012 are aligned. The specific operation mode may be various forms such as arranging a distance sensor or a pressure sensor on the limiting part 108 and the protrusion 106, or may be observed by an operator. Therefore, the barrel 101 or the opening and closing mechanism can be effectively protected from being damaged while the barrel 101 is stably closed. In addition, when the limiting portion 108 is a plate-shaped structure in fig. 2, and a through hole is formed in the plate-shaped structure, the second connecting rod 102 passes through the through hole, and the aperture of the through hole matches with the radial length of the second connecting rod 102, the limiting of the second connecting rod 102 in the horizontal direction can be completed, and the accuracy of the linear motion of the second connecting rod 102 is further improved.

Optionally, the drilling bucket further comprises a third connecting rod 111 and a fourth connecting rod 110 connected at the ends; the second half cylinder 1012 is hinged with the connecting part 100, and the second half cylinder 1012 can rotate in the direction away from the first half cylinder 1011; the other end of the third connecting rod 111 is connected with the inner wall of the second half cylinder 1012, and the other end of the fourth connecting rod 110 is used for connecting a power head pressure plate.

For example, when the opening and closing mechanism described above is applied to the second half cylinder 1012, that is, the drilling bucket further includes the third connecting rod 111 and the fourth connecting rod 110, as shown in fig. 3, one end of the third connecting rod 111 is connected to the inner wall of the second half cylinder 1012, the other end is connected to one end of the fourth connecting rod 110, and the other end of the fourth connecting rod 110 is connected to the power head pressure plate, corresponding to the arrangement of the opening and closing mechanism on the first half cylinder 1011. Thereby forming a symmetrical structure with the opening and closing mechanism on the first cylinder half 1011. The actual action process refers to the opening and closing process of the first half cylinder 1011. Meanwhile, it should be noted that, in the opening and closing process, since the second connecting rod 102 and the fourth connecting rod 110 are both connected to the same power head pressure plate, the actions of the second connecting rod 102 and the fourth connecting rod 110 are performed synchronously, that is, when the cylinder 101 is in the soil unloading opening state, the first half cylinder 1011 and the second half cylinder 1012 are driven by the power head pressure plate to respectively drive the first connecting rod 103 and the third connecting rod 111 to push the first half cylinder 1011 and the second half cylinder 1012 to respectively rotate towards the sides far away from each other through the second connecting rod 102 and the fourth connecting rod 110, so as to form a shape similar to a splayed opening shape. The arrangement can further improve the soil unloading capacity of the drilling bucket, so that soil scraps close to the second half cylinder 1012 can also have better dropping capacity, particularly for some soil layers with larger viscosity. Meanwhile, the opening and closing of the drilling bucket and the soil unloading are prevented from completely depending on the high rotating speed provided by the motor. In addition, the second half cylinder 1012 can also include a plurality of third half cylinders 101, fourth half cylinders 101, etc., that is, a plurality of half cylinders 101 are all hinged with the connecting part 100, and the inner wall of each half cylinder 101 is provided with the above-mentioned similar opening and closing mechanism, and then the opening of each half cylinder 101 is completed by driving the opening and closing mechanism under the driving of the power head pressure plate, and more effective soil unloading is performed. It should be noted that, the connection between the third connecting rod 111 and the second half cylinder 1012 may also refer to the arrangement between the first connecting rod 103 and the first half cylinder 1011, for example, the fixing block 104 may also be arranged on the inner wall of the second half cylinder 1012, or the third connecting rod 111 and the second half cylinder 1012 may be welded, the limiting hole 105 may also be formed on the second half cylinder 1012, the protrusion 106 may be formed on the fourth connecting rod 110, the limiting portion 108 may be formed at the corresponding position of the connecting portion 100, and so on.

Optionally, the drilling bucket further comprises a fifth connecting rod 109, and the second connecting rod 102 and the fourth connecting rod 110 are respectively connected to two ends of the fifth connecting rod 109.

For example, as shown in fig. 2, when the drilling bucket further includes the fifth connecting rod 109, the second connecting rod 102 and the fourth connecting rod 110 are respectively connected to two end portions (end surfaces or side walls close to the end surfaces) of the fifth connecting rod 109, so that the synchronous action capability of the first half cylinder 1011 and the second half cylinder 1012 can be further improved, opening and closing of the two half cylinders can be more harmoniously synchronized, and the stability after closing and the axial line of the cylinder 101 after closing the drilling bucket can be ensured to be always kept in the vertical direction during actual operation.

Optionally, the teeth 112 are respectively disposed at the ends of the first half cylinder 1011 and the second half cylinder 1012 far away from the connecting part 100.

For example, in order to improve the tunneling capability of the drilling bucket during drilling, the teeth 112 are arranged on the first half cylinder 1011 and the second half cylinder 1012 in the direction close to the bottom door. For example, as shown in FIG. 4, the teeth 112 are diagonally disposed. Regarding the specific arrangement shape of the teeth 112, the arrangement may be based on the property of the soil layer, such as a short auger bit or a rotary bucket bit, etc.

On the other hand, the embodiment of the utility model provides a rotary drilling rig, including drilling rod, unit head pressure plate and the above-mentioned drilling bucket of any kind; the connecting part 100 of the drilling bucket is connected with a drill rod, and the end part of the second connecting rod 102 of the drilling bucket is connected with a power head pressure plate; when the drill rig further includes a fourth connecting rod 110, the end of the fourth connecting rod 110 is connected with the power head pressure plate.

For example, as shown in fig. 4, the drilling bucket is applied to a rotary drilling rig, and the connecting part 100 of the drilling bucket and a drill rod are connected together. Correspondingly, the second connecting rod 102 and the fourth connecting rod 110 are respectively connected to the power head pressure plate. In actual operation, when the cylinder 101 needs to unload soil, an operator operating the rotary drilling rig controls the first half cylinder 1011 and the second half cylinder 1012 to respectively drive the first connecting rod 103 and the third connecting rod 111 to push the first half cylinder 1011 and the second half cylinder 1012 to respectively rotate towards one side far away from each other through the second connecting rod 102 and the fourth connecting rod 110 under the driving of the power head pressure plate, so that a shape similar to a splayed opening is formed, and soil unloading is completed. When the drilling machine needs to be closed, the operator controls the power head pressure plate to move reversely, so that the first half cylinder 1011 and the second half cylinder 1012 are driven to be close to each other and complete involution in the vertical line direction, the operator moves the drilling bucket into the drilling hole to perform the next circulation operation, and continuous drilling of the drilling hole is completed. By adopting the drilling bucket, the rotary drilling rig can smoothly unload soil under the condition that the protection machinery is not damaged due to the rotating speed when the soil layer has larger viscosity. And then the efficiency of operation has been improved for the progress of construction.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling bucket, comprising: the end parts of the first connecting rod and the second connecting rod are connected, the connecting part is connected with the cylinder; the connecting part is used for connecting with a drill rod; the cylinder body comprises a first half cylinder body and a second half cylinder body which are mutually involutory, the first half cylinder body is hinged with the connecting part, the second half cylinder body is connected with the connecting part, and the first half cylinder body can rotate towards the direction far away from the second half cylinder body; the other end of the first connecting rod is connected with the inner wall of the first half cylinder, the other end of the second connecting rod is used for connecting a power head pressure plate, and the second connecting rod drives the power head pressure plate to drive the first connecting rod to push the first half cylinder to rotate.

2. The drilling bucket of claim 1, wherein the first half cylinder comprises a body and a fixed block fixedly arranged on the inner wall of the body, and the end of the first connecting rod is hinged with the fixed block.

3. The drill bucket of claim 1, wherein an end of the first connecting rod is welded to the first half cylinder.

4. The drilling bucket of claim 1, wherein the first connecting rod is positioned inside the cylinder body, a limiting hole is further formed in one end, close to the connecting part, of the first half cylinder body, and the second connecting rod penetrates through the limiting hole to be connected with the first connecting rod.

5. The drilling bucket as claimed in claim 4, wherein a protrusion is further arranged on the second connecting rod, the protrusion is located outside the cylinder, an elastic member is further sleeved on the second connecting rod, and the elastic member is located between the protrusion and the cylinder.

6. The drilling bucket of claim 5, wherein a limiting part is further arranged on the connecting part, and the limiting part is abutted with the protrusion to limit the depth of the second connecting rod in the cylinder.

7. The drilling bucket of any one of claims 1 to 6, further comprising third and fourth connecting rods connected at their ends; the second half cylinder body is hinged with the connecting part and can rotate towards the direction far away from the first half cylinder body; the other end of the third connecting rod is connected with the inner wall of the second half cylinder, and the other end of the fourth connecting rod is used for being connected with the power head pressure plate.

8. The drilling bucket of claim 7, further comprising a fifth connecting rod, the second connecting rod and the fourth connecting rod being connected to both ends of the fifth connecting rod, respectively.

9. The drilling bucket according to claim 1, wherein teeth are respectively arranged at one ends of the first half cylinder and the second half cylinder, which are far away from the connecting part.

10. A rotary drilling rig comprising a drill pipe, a power head pressure plate and a drilling bucket according to any one of claims 1 to 9; the connecting part of the drilling bucket is connected with the drill rod, and the end part of a second connecting rod of the drilling bucket is connected with the power head pressure plate; when the drilling bucket also comprises a fourth connecting rod, the end part of the fourth connecting rod is connected with the power head pressure plate.