阅读说明：本技术 低净空搅拌桩钻杆节拼接装置 (Low-clearance stirring pile drill rod section splicing device ) 是由 毛忠良 宫能和 储海岩 刘好正 刘柏林 周建光 王长松 张华� 魏荣亮 魏琛宇 于 2018-07-24 设计创作，主要内容包括：本发明涉及桩基施工技术领域,具体涉及一种低净空搅拌桩钻杆节拼接装置。该装置包括与固定基础连接的外框,外框的顶部设有顶板,外框的内部上下滑动设置有底板,顶板与底板之间连接有纵向调节油缸,顶板和底板上均设有用于使待拼接钻杆节穿过的通孔；底板上设有用于夹持待拼接钻杆节的夹持部。在通过夹持部夹紧待拼接钻杆节后,通过纵向调节油缸来缓慢的调节待拼接钻杆节的高度,直至待拼接钻杆节的底端与既拼接钻杆节的顶端拼接,以备后续通过动力头进行螺栓紧固对接操作,整个拼接操作方便、高效,而且由于本装置相较于机械臂等设备结构简单,强度高,因此能够承受动力头所产生的较大冲击力,极大的提高了拼接操作的安全性。(The invention relates to the technical field of pile foundation construction, in particular to a splicing device for drill rod sections of a low-clearance mixing pile. The device comprises an outer frame connected with a fixed foundation, wherein a top plate is arranged at the top of the outer frame, a bottom plate is arranged in the outer frame in a vertically sliding mode, a longitudinal adjusting oil cylinder is connected between the top plate and the bottom plate, and through holes for enabling drill rod sections to be spliced to penetrate through are formed in the top plate and the bottom plate; the bottom plate is provided with a clamping part for clamping the drill rod section to be spliced. After the clamping part clamps and treats the concatenation drilling rod festival, the height of waiting to splice the drilling rod festival is come slow regulation through vertical adjusting cylinder, until the bottom of waiting to splice the drilling rod festival with the top concatenation of both splicing the drilling rod festival, carry out bolt-up butt joint operation through the unit head in order to follow-up, whole concatenation convenient operation, high efficiency, and because this device is compared in equipment structures such as arm simple, and intensity is high, consequently, can bear the produced great impact force of unit head, very big improvement the security of concatenation operation.)

1. The splicing device for the drill rod sections of the low-clearance mixing pile is characterized by comprising an outer frame connected with a fixed foundation, wherein a top plate is arranged at the top of the outer frame, a bottom plate is arranged in the outer frame in a vertically sliding mode, a longitudinal adjusting oil cylinder is connected between the top plate and the bottom plate, and through holes for the drill rod sections to be spliced to pass through are formed in the top plate and the bottom plate; and the bottom plate is provided with a clamping part for clamping the drill rod section to be spliced.

2. The low-clearance mixing pile drill pipe section splicing device as claimed in claim 1, wherein the clamping portion comprises a plurality of clamping assemblies uniformly arranged in the circumferential direction of the drill pipe section to be spliced, and each clamping assembly comprises a counter-force seat fixedly connected with a bottom plate and a horizontal adjusting oil cylinder arranged between the counter-force seat and the drill pipe section to be spliced.

3. The low-clearance mixing pile drill rod section splicing device as claimed in claim 2, wherein the horizontal adjusting oil cylinder is in contact with the drill rod section to be spliced through a clamping plate.

4. The apparatus of claim 3, wherein the shape of the contact portion of the clamping plate and the drill rod section to be spliced is adapted to the shape of the outer wall of the drill rod section to be spliced.

5. The low clearance mixing pile drill pipe section splicing device of claim 1, wherein the number of the longitudinal adjusting cylinders is multiple, and the multiple longitudinal adjusting cylinders are evenly distributed in the circumferential direction of the drill pipe section to be spliced.

6. The low clearance mixing pile drill pipe section splicing apparatus of claim 5, wherein the longitudinal adjustment cylinder is hinged to the top plate.

7. The low clearance mixing pile drill pipe section splicing apparatus of claim 5, wherein the longitudinal adjustment cylinder is hinged to the base plate.

8. The low clearance mixing pile drill pipe section splicing apparatus of claim 1, wherein the bottom of the outer frame is provided with an inwardly extending saddle for limiting the bottom plate to prevent the bottom plate from being removed from the outer frame.

Technical Field

The invention relates to the technical field of pile foundation construction, in particular to a splicing device for drill rod sections of a low-clearance mixing pile.

Background

In the existing pile foundation construction drilling process, low-clearance construction working conditions such as under a high-voltage line, a communication line network or below a bridge often exist, the construction height is limited, the length of a drill rod is long, when drilling vertically downwards, the drill rod and accessory equipment thereof need a high construction space, a power grid and a communication network circuit in the upper space can only be temporarily cut off, the drill rod and the accessory equipment thereof are connected after the drilling construction is finished, the drill rod and the accessory equipment thereof need to be in coordination with a power grid department for a long time, the construction period is often delayed, construction design can only be modified if the drill rod cannot be coordinated, and great waste of time, economy, labor cost and the like is caused.

The existing solution is to divide the drill rod into multiple sections, and splice the drill rod sections one by one along with the drilling depth.

In the low clearance stirring pile construction, when the drilling rod is spliced section by section, because the drilling rod weight is heavier, the manual work can not be accomplished. The existing method is to use a mechanical arm to assist in splicing a drill rod, the mechanical arm clamps the middle part of the drill rod and vertically transfers the drill rod to a pile position, a power head for fastening a bolt at the splicing position of the drill rod slowly descends, a lower joint at the lower part of the power head is aligned to an upper joint of the drill rod for butt joint, the descending speed of the power head is controlled by the action with high requirement, and the weight of the power head is loaded on the mechanical arm slightly carelessly to cause the damage of the mechanical arm. The rotary radius of the mechanical arm clamping the drill rod is large, the mechanical arm is designed to have strength enough to resist the weight of the power head, the geometric size and the weight of the mechanical arm are large, the strength requirement on the main tower is greatly improved, and the mechanical arm is difficult to realize. In addition, the position of the mechanical arm for clamping the drill rod is the middle part of the drill rod, and a space adjusting room is difficult to be formed due to the fact that the drill rod is clamped by the mechanical arm in a dead mode when the drill rod is in butt joint, so that the drill rod is difficult to butt joint.

Disclosure of Invention

The invention aims to provide a device capable of safely and efficiently completing splicing of drill rod sections of a low-clearance mixing pile.

In order to achieve the purpose, the invention provides a low-clearance stirring pile drill rod section splicing device which comprises an outer frame connected with a fixed foundation, wherein a top plate is arranged at the top of the outer frame, a bottom plate is arranged in the outer frame in an up-and-down sliding manner, a longitudinal adjusting oil cylinder is connected between the top plate and the bottom plate, and through holes for allowing drill rod sections to be spliced to pass through are formed in the top plate and the bottom plate; and the bottom plate is provided with a clamping part for clamping the drill rod section to be spliced.

Optionally, the clamping part includes a plurality of clamping components that treat the even setting in circumference of splicing the drilling rod festival, clamping component include with bottom plate fixed connection's counter-force seat with set up be in the counter-force seat with treat the horizontal adjustment hydro-cylinder between the splicing drilling rod festival.

Optionally, the horizontal adjusting oil cylinder is in contact with the drill rod section to be spliced through a clamping plate.

Optionally, the shape of the part of the clamping plate, which is in contact with the drill rod section to be spliced, is adapted to the shape of the outer wall of the drill rod section to be spliced.

Optionally, the number of the longitudinal adjusting oil cylinders is multiple, and the longitudinal adjusting oil cylinders are uniformly distributed in the circumferential direction of the drill rod section to be spliced.

Optionally, the longitudinal adjusting cylinder is hinged to the top plate.

Optionally, the longitudinal adjusting cylinder is hinged to the bottom plate.

Optionally, the bottom of the outer frame is provided with a supporting platform extending inwards, and the supporting platform is used for limiting the bottom plate to prevent the bottom plate from falling out of the outer frame.

The invention provides a low-clearance stirring pile drill rod section splicing device which comprises an outer frame connected with a fixed foundation, wherein the top of the outer frame is provided with a top plate, a bottom plate is arranged in the outer frame in a vertically sliding mode, a longitudinal adjusting oil cylinder is connected between the top plate and the bottom plate, and through holes for enabling drill rod sections to be spliced to penetrate through are formed in the top plate and the bottom plate; the bottom plate is provided with a clamping part for clamping the drill rod section to be spliced. After the clamping part clamps and treats the concatenation drilling rod festival, the height of waiting to splice the drilling rod festival is come slow regulation through vertical adjusting cylinder, until the bottom of waiting to splice the drilling rod festival with the top concatenation of both splicing the drilling rod festival, carry out bolt-up butt joint operation through the unit head in order to follow-up, whole concatenation convenient operation, high efficiency, and because this device is compared in equipment structures such as arm simple, and intensity is high, consequently, can bear the produced great impact force of unit head, very big improvement the security of concatenation operation.

Drawings

Fig. 1 is a schematic view of a splicing device for drill rod sections of a low clearance mixing pile provided by an embodiment of the invention.

Reference numerals:

1. the drill rod sections to be spliced; 2. a longitudinal adjusting oil cylinder; 3. an outer frame; 31. a top plate; 32. a saddle; 4. a clamping plate; 5. a horizontal adjusting oil cylinder; 6. a counter-force seat; 7. a base plate; 8. the drill rod sections are spliced.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1, the low clearance mixing pile drill rod section splicing device provided by the embodiment of the invention comprises an outer frame 3 connected with a fixed foundation, wherein the outer frame 3 can be an integral cylindrical structure formed by welding a plurality of rod profiles, a top plate 31 is arranged at the top of the outer frame 3, and the top plate 31 can be connected with the outer frame 3 through bolts or can be welded with the outer frame 3; a bottom plate 7 is arranged in the outer frame 3 in a vertically sliding manner, a longitudinal adjusting oil cylinder 2 is connected between the top plate 31 and the bottom plate 7, and when the longitudinal adjusting oil cylinder 2 stretches, the bottom plate 7 can slide vertically in the outer frame 3; the top plate 31 and the bottom plate 7 are provided with through holes for allowing the drill rod sections 1 to be spliced to pass through, and the bottom plate 7 is provided with a clamping part for clamping the drill rod sections 1 to be spliced.

When the splicing operation of the drill rod sections is carried out, the device is arranged above the spliced drill rod sections 8, the axle center of the through hole in the bottom plate 7 is opposite to the axle center of the spliced drill rod sections 8, and then the device is connected with a fixed foundation. The device is characterized in that the drill rod section 1 to be spliced is hung above the device through a crane or a mechanical arm, the drill rod section 1 to be spliced is placed down to pass through holes in the top plate 31 and the bottom plate 7, the clamping part on the bottom plate 7 clamps the drill rod section 1 to be spliced after the drill rod section 1 is placed down to a proper position, and the crane or the mechanical arm can be loosened. The height of the drill rod section 1 to be spliced is slowly adjusted through the longitudinal adjusting oil cylinder 2 until the bottom end of the drill rod section 1 to be spliced is spliced with the top end of the spliced drill rod section 8, so that the two drill rod sections are subjected to spiral fastening butt joint through the power head.

When the power head is used for butt joint operation, even if the power head is carelessly operated, the power head generates large impact force in a certain direction, the force can be transmitted and loaded on the device, and the device has a simple structure and high strength relative to equipment such as a mechanical arm and the like, does not have an adjusting rotating shaft with multiple degrees of freedom, can bear the large impact force and cannot cause damage to the device.

In some embodiments, the clamping portion includes a plurality of clamping assemblies evenly arranged in the circumferential direction of the drill rod joint 1 to be spliced, for example, two clamping assemblies are symmetrically arranged on both sides of the drill rod joint 1 to be spliced, or four clamping assemblies are arranged around the drill rod joint 1 to be spliced at equal intervals, and the like, as long as the plurality of clamping assemblies are avoided from the longitudinal adjusting cylinder 2 at the position of each quadrant point of the drill rod joint 1 to be spliced.

Every centre gripping subassembly all includes the counter-force seat 6 with bottom plate 7 fixed connection and sets up at counter-force seat 6 and the horizontal adjustment hydro-cylinder 5 of waiting between the concatenation drilling rod festival 1, and counter-force seat 6 can be through bolt and bottom plate 7 fixed connection, also can be through welding and bottom plate 7 fixed connection. The cylinder body part of horizontal adjustment hydro-cylinder 5 is connected with reaction seat 6, the telescopic link can directly contradict on treating the outer wall of concatenation drilling rod festival 1, and the telescopic link is preferred to be passed through grip block 4 and to be treated the contact of concatenation drilling rod festival 1 certainly, grip block 4 can increase and treat the area of contact of concatenation drilling rod festival 1, reduces the unit area pressure, avoids treating concatenation drilling rod festival 1 and causes the damage.

The plurality of clamping assemblies can clamp and fix the drill rod sections to be spliced 1, and can also finely adjust the horizontal positions of the drill rod sections to be spliced 1 through different stretching amounts of the respective horizontal adjusting oil cylinders 5, so that the drill rod sections to be spliced 1 can be more accurately butted with the spliced drill rod sections 8.

Further, the shape of the part of the clamping plate 4 contacting the drill rod section 1 to be spliced is preferably adapted to the shape of the outer wall of the drill rod section 1 to be spliced, so that the clamping plate 4 can be more closely contacted with the drill rod section 1 to be spliced.

In some embodiments, the number of the longitudinal adjusting cylinders 2 is multiple, and the multiple longitudinal adjusting cylinders 2 are uniformly distributed in the circumferential direction of the drill rod section 1 to be spliced. The plurality of longitudinal adjusting oil cylinders 2 work cooperatively to realize the rise and fall of the bottom plate 7, the rise and fall stability of the bottom plate 7 can be enhanced, and the device can bear larger impact force from the power head.

Furthermore, the longitudinal adjusting oil cylinder 2 can be hinged to the top plate 31, so that the longitudinal angle of the to-be-spliced drill rod section 1 can be adjusted through different telescopic amounts of the plurality of longitudinal adjusting oil cylinders 2, and the to-be-spliced drill rod section 1 can be more accurately butted with the spliced drill rod section 8.

In other embodiments, the longitudinal adjusting cylinder 2 may also be hinged to the bottom plate 7, so that the longitudinal angle of the drill rod section 1 to be spliced may be adjusted by different expansion amounts of the plurality of longitudinal adjusting cylinders 2, and it is preferable that the upper end and the lower end of the longitudinal adjusting cylinder 2 are hinged to the top plate 31 and the bottom plate 7, respectively.

In some embodiments, the bottom of the outer frame 3 is provided with an inwardly extending saddle 32, and the saddle 32 is used for limiting the bottom plate 7 to prevent the bottom plate 7 from being removed from the outer frame 3. Therefore, the bottom plate 7 can be prevented from being separated from the outer frame 3 due to misoperation or the out-of-control of the longitudinal adjusting oil cylinder 2, and the safety of the device is further improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.