WO2023138386A1

WO2023138386A1 - Guide rod type grab

Info

Publication number: WO2023138386A1
Application number: PCT/CN2023/070605
Authority: WO
Inventors: 于帅; 马文宝; 张世平; 王浩
Original assignee: 北京三一智造科技有限公司
Priority date: 2022-01-19
Filing date: 2023-01-05
Publication date: 2023-07-27

Abstract

The present application relates to the technical field of operation machinery. Provided is a guide rod type grab. The guide rod type grab comprises: a guide frame provided with a through hole; reels which are rotatably connected to the guide frame; a guide rod which passes in a slidable mode through the through hole, protection grooves extending in the axial direction of the guide rod being formed in side walls of the guide rod; a hydraulic grab which is connected to the guide rod; and hydraulic pipes which are wound on the reels, first ends of the hydraulic pipes protruding out of the reels, passing through the protection grooves and being connected to the hydraulic grab. In the guide rod type grab provided in the present application, the protection grooves are formed in the guide rod, and the hydraulic pipes on the reels can pass through the protection grooves in the guide rod so that the protection grooves can restrict the hydraulic pipes and reduce the swing amplitude of the hydraulic pipes, thus solving the problem in the prior art that since a hydraulic pipe swings greatly, the hydraulic pipe is liable to be scratched against and collide with a grab trenching inner wall and thus get damaged.

Description

Guide rod grab

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202220143158.4 submitted on January 19, 2022 and the title of the invention is "Guide Rod Grab", and the priority of the Chinese patent application with the application number 202222918575.4 submitted on November 2, 2022 and the title of the invention is "Rotary Drilling Rig", which are fully incorporated herein by reference.

technical field

The present application relates to the technical field of working machinery, in particular to a guide rod type grab.

Background technique

At present, during the working process of the rotary digging guide rod grab, the hydraulic oil of the main pump is transferred to the oil cylinder on the grab through the hydraulic hose wound on the reel to drive the oil cylinder to expand and contract, and the grab function is realized through the oil cylinder telescopic grab.

During the working process, as the construction depth continues to increase, the longer the length of the rubber hose is lowered, the greater the vibration of the rubber hose will be, regardless of the hydraulic shock generated by the system or the continuous shrinkage and stretching of the rubber hose length, causing the rubber hose and the inner wall of the grab groove to be scratched and damaged.

Contents of the invention

The present application provides a guide rod type grab, which is used to solve the defect that the rubber hose is easy to shake in the prior art, and realize the effect of preventing the rubber hose from shaking at least to a certain extent.

The application provides a guide rod grab, including:

The guide rod, the side wall is provided with a protective groove extending along the axial direction of the guide rod;

a guide frame slidably arranged on the guide rod;

The reel is connected with the guide frame, and the reel can rotate around the reel;

A hydraulic grab bucket is connected to the guide rod;

The hydraulic pipe is wound on the reel, and the first end of the hydraulic pipe passes through the reel, passes along the protection groove and is connected with the hydraulic grab.

The first end of the hydraulic pipe passes through the reel, and also includes a guide;

The first end of the hydraulic pipe passes through the reel, passes through the guide device and the protection groove in turn, and is connected with the grab bucket

According to a guide rod grab bucket provided by the present application, the guide device includes a guide pulley set arranged on the guide frame.

According to a guide rod grab bucket provided in the present application, the guide device further includes a mounting seat, the mounting seat is connected to the guide frame, and the guide pulley set is arranged on the mounting seat.

According to a guide rod grab bucket provided by the present application, the pulley block includes a first fixed pulley and a second fixed pulley, and the number of the first fixed pulley is set to two;

Wherein, the two first fixed pulleys are arranged opposite to each other, and an interval is provided between the outer circumferential surfaces of the two, so as to form a guide space for the hydraulic pipe to pass through;

The second fixed pulley is inserted into the protective groove;

The first end of the hydraulic pipe passes through the guide space and the second fixed pulley in sequence and enters the protection groove.

According to a guide rod grab bucket provided by the present application, the installation base includes two opposite support plates, both of which are connected to the guide frame, and a space is provided between the two support plates, and the guide pulley set is arranged between the two support plates.

According to a guide rod grab bucket provided by the present application, the reel is set as a single-row reel.

According to a guide rod grab bucket provided by the present application, the protection groove includes a groove provided on the outer circumferential surface of the guide rod.

According to the guide rod type grab provided by the present application, it further includes two guide plates, the two guide plates are arranged at intervals on the outer wall of the guide rod, and form the protective groove with the outer wall of the guide rod.

According to the guide rod type grab provided by the present application, it further includes a connecting plate, the two guide plates are respectively connected to both sides of the connecting plate, the connecting plate is connected to the guide rod, and the connecting plate and the two guiding plates form the protective groove.

According to a guide rod grab bucket provided by the present application, the cross section of the guide rod perpendicular to the axial direction is configured as a polygon.

The application also provides a rotary drilling rig, comprising:

main body of the drilling rig;

Rotary digging method components;

a grab assembly, including the guide bar grab;

The pulley frame includes a frame body, a first pulley and a second pulley, the frame body is arranged on the top of the mast of the drilling rig main body, and the first pulley and the second pulley are arranged on the frame body;

Wherein, a steel wire rope is wound on the pulley frame, and the steel wire rope is connected to the rotary excavation method assembly or the grab bucket assembly after passing around the first pulley and the second pulley in turn; a space is left between the steel wire rope and the mast to prevent mutual interference;

Along the length direction of the frame body, the position of the second pulley is adjustable.

According to a rotary drilling rig provided by the present application, the frame is provided with:

At least two mounting holes are distributed along the length direction of the frame, and the mounting holes are used for mounting the second pulley.

According to a rotary drilling rig provided by the present application, the rotary drilling method component includes:

A round drill pipe, the top end of which is connected to the wire rope;

a drill bucket, arranged at the bottom end of the circular drill rod;

The drill bit is used to drive the circular drill to rotate, and the drill bit is provided with a circular hole matching the circular drill.

According to a rotary drilling rig provided by the present application, the grab assembly further includes:

A square guide rod, the top of which is connected to the steel wire rope;

A grab bucket is arranged at the bottom end of the square guide rod;

The guide rotation device is used to drive the rotation of the square guide rod, and the guide rotation device is provided with a square hole matching the square guide rod.

According to a rotary drilling rig provided by the present application, the guide rotation device includes:

a guide frame body, which is slidably connected with the mast;

The power head sleeve is rotatably connected with the guide frame body, and the power head sleeve is provided with the square hole;

A rotary driving device is arranged on the guide frame body, and the rotary driving device is used to drive the power head sleeve to rotate.

According to a rotary drilling rig provided by the present application, the grab includes:

The grab frame body is connected with the bottom end of the square guide rod;

The bucket body includes two grab bucket petals, and the first ends of the two grab bucket petals are both rotatably connected to the grab frame body;

The grab driving device is used to drive the two grab bucket flaps to rotate, so that the second ends of the two grab bucket flaps are closed or separated.

According to a rotary drilling rig provided by the present application, the grab driving device includes:

Two grab cylinders are arranged on opposite sides of the grab frame, and the piston rods of the two grab cylinders are respectively rotatably connected to the two grab petals.

Two rubber hoses are respectively connected to the two grab cylinders;

Two hose reeling devices are arranged on the guide and rotation device, and the two reeling hose devices are respectively used for retracting and unwinding the two rubber hoses.

According to a rotary drilling rig provided by the present application, the grab bucket also includes:

The slider is slidably connected with the grab frame body;

Two push-pull rods, the first ends of the two push-pull rods are both rotatably connected with the slider, and the second ends of the two push-pull rods are rotatably connected with the two grab bucket petals respectively.

According to a rotary drilling rig provided in the present application, the grab assembly further includes a limiting device for limiting the rotation angle of the power head sleeve.

The guide rod type grab bucket provided by this application, by setting a protection groove on the guide rod, the hydraulic pipe on the reel can pass through the protection groove on the guide rod, so that the protection groove restricts the hydraulic pipe and reduces the swing range of the hydraulic pipe, thereby solving the problem in the prior art that the hydraulic pipe shakes greatly, which easily causes the hydraulic pipe and the inner wall of the grab groove to be scratched and damaged.

The rotary drilling rig provided by the application includes a drilling rig main body, a rotary drilling assembly, a grab assembly and a pulley frame. The pulley frame is arranged on the top of the mast of the drilling rig body, and the pulley frame can include a frame body, a first pulley and a second pulley. It can be switched with the grab assembly, so that the rotary drilling rig can realize the duplex method of rotary drilling and diaphragm wall.

Moreover, along the length direction of the frame body, the position of the second pulley is adjustable, so that the center distance of the rotary digging assembly or the grab assembly can be adjusted, so that the center distances of the two working devices of the rotary digging assembly and the grab assembly are different when implementing the two construction methods, so that the groove width of the grab assembly is not limited.

With such an arrangement, it is only necessary to adjust the installation position of the second pulley to meet the different requirements for the construction scope under different construction methods, and there is no need to replace the pulley frame, which is conducive to reducing the manufacturing cost of the rotary drilling rig.

Description of drawings

In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings without creative work.

Fig. 1 is a schematic structural view of a guide rod grab bucket in an embodiment provided by the present application;

Figure 2 is an enlarged view of the view shown in Figure 1;

Fig. 3 is A-A sectional view among Fig. 1;

Fig. 4 is a schematic structural view of the rotary drilling rig provided by the present application (the working device is a rotary drilling method assembly);

Fig. 5 is a schematic structural view of the rotary drilling rig provided by the present application (the working device is a grab assembly);

Fig. 6 is one of the structural representations of the pulley frame provided by the application (when the second pulley is installed in the first mounting hole);

Fig. 7 is the second structural representation of the pulley frame provided by the application (when the second pulley is installed in the second mounting hole);

Fig. 8 is a front view of the guiding rotation device and the coiling device of the rotary drilling rig provided by the present application;

Fig. 9 is a cross-sectional view of the guiding rotation device and the coiling device of the rotary drilling rig provided by the present application;

Fig. 10 is a top view of the guiding rotation device and the coiling device of the rotary drilling rig provided by the present application;

Fig. 11 is a schematic structural view of the grab bucket provided by the present application.

Reference signs:

100. guide frame; 200. reel; 300. guide rod; 400. hydraulic grab; 5. hydraulic pipe; 6. first fixed pulley; 7. second fixed pulley; 8. support plate; 9. guide plate; 10. connecting plate;

1. The main body of the drilling rig; 11. The mast; 2. The pulley frame;

21. The first pulley; 22. The frame; 23. The second pulley;

24. The first installation hole; 25. The second installation hole; 26. Steel wire rope;

3. Rotary digging method components; 31. Round drill pipe; 32. Drill pipe power head;

33. Drilling bucket; 34. Rotary digging follower frame; 4. Grab bucket assembly;

41. Square guide rod; 42. Guide rotation device; 43. Grab bucket;

44. Grab follower frame; 45. Rubber hose; 46. Roller hose device;

421, slide frame; 422, guide frame body; 423, power head sleeve;

424, rotary drive device; 425, slewing bearing; 426, limit device;

461, coil coil; 462, second motor; 431, grab frame body;

432, connection seat; 433, grab bucket valve; 434, grab cylinder;

435, slide block; 436, push-pull bar; 437, chute.

Detailed ways

In order to make the purpose, technical solutions and advantages of the application clearer, the technical solutions in the application will be clearly and completely described below in conjunction with the accompanying drawings in the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The guide rod type grab in the embodiment of the present application will be described below with reference to FIGS. 1 to 3 .

Specifically, the guide rod grab includes a guide frame 100 , a reel 200 , a guide rod 300 , a hydraulic grab 400 and a hydraulic pipe 5 .

Wherein, the side wall of the guide rod 300 is provided with a protective groove 12 extending along the axial direction of the guide rod 300 . Further, the guide rod 300 is usually raised and lowered under the action of the winch through the wire rope.

The guide frame 100 is slidably disposed on the guide rod 300 .

The reel 200 is connected to the guide frame 100 . And the reel can rotate around the reel. The reel can be rotated by hydraulic motor.

The hydraulic grab bucket 400 is connected with the guide rod 300 . The hydraulic grab includes a cylinder and is driven to open and close by the cylinder.

The hydraulic tube 5 is wound on the reel 200 . And the first end of the hydraulic pipe 5 passes through the reel 200 , travels along the protection groove 12 and connects with the hydraulic grab 400 . The connection between the hydraulic pipe and the hydraulic grab means that the hydraulic pipe is connected to the cylinder of the hydraulic grab.

There are two hydraulic pipes 5 , reels 200 and protection grooves 12 , and the three are in one-to-one correspondence. Two hydraulic pipes are used as oil supply pipe and oil return pipe respectively.

The guide rod grab bucket provided by the present application, by setting the protection groove 12 on the guide rod 300, the hydraulic pipe 5 on the reel 200 can pass through the protection groove 12 on the guide rod 300, so that the protection groove 12 restricts the hydraulic pipe 5 and reduces the swing range of the hydraulic pipe 5, thereby solving the problem that the hydraulic pipe 5 in the prior art shakes greatly, which easily causes the hydraulic pipe 5 to scrape against the inner wall of the grab bucket and be damaged.

In some embodiments provided in the present application, the guide rod grab bucket further includes a guide device for guiding the first end of the hydraulic pipe 5 from the reel 200 to the protection groove 12 .

The first end of the hydraulic pipe 5 passes through the reel 200 , passes through the guide device and the protection groove 12 in turn, and is connected with the grab bucket.

The hydraulic pipe 5 passing through the reel 200 is close to the guide rod 300 through the guide device and enters the protection groove 12, so that the hydraulic pipe 5 between the reel 200 and the protection groove 12 can be kept stretched to avoid knuckles.

In some embodiments provided in the present application, the guiding device includes a set of guiding pulleys disposed on the guiding frame 100 .

The first end of the hydraulic pipe 5 passes through the reel 200, passes through the guide pulley block and the protection groove 12 in turn, and is connected with the grab bucket.

With such arrangement, the hydraulic pipe 5 is guided by the guide pulley block, which can reduce the resistance of the guide device to the hydraulic pipe 5 and make the operation of the hydraulic pipe 5 smoother. At the same time, the structure of the guide device can be simplified, which is convenient for processing and production.

In some embodiments provided in the present application, the guide device further includes a mounting seat 110 connected to the guide frame 100 , and the guide pulley set is disposed on the mounting seat 110 .

For example, the mounting seat 110 may be connected to the guide frame 100 by welding or threaded connection. It is more convenient to install and arrange the guide pulley block by providing the mounting seat 110 .

Further, the mounting base 110 includes two opposite supporting plates 8 . The two support plates 8 are connected with the guide frame 100 , and there is a space between the two support plates 8 , and the guide pulleys are arranged between the two support plates 8 . With such arrangement, the structure of the mounting seat 110 is simple.

In some embodiments provided in this application, the pulley block includes a first fixed pulley 6 and a second fixed pulley 7 . The quantity of the first fixed pulley 6 is set to two.

Wherein, the two first fixed pulleys 6 are arranged opposite to each other, and a space is provided between the outer circumferential surfaces of the two, so as to form a guiding space for the hydraulic pipe 5 to pass through.

The second fixed pulley 7 is inserted into the protection groove 12 .

The first end of the hydraulic pipe 5 sequentially passes through the guide space and the second fixed pulley 7 and enters the protection groove 12 .

Referring to FIG. 2 , the first end of the hydraulic pipe 5 passes through the reel 200 , passes through the guiding space between the two first fixed pulleys 6 , and then enters the protection groove 12 through the guidance of the second fixed pulley 7 .

In some embodiments provided in the application, the reel 200 is configured as a single-row reel. Such arrangement can prevent the hydraulic pipes 5 in the reel 200 from being arranged in confusion. The distance between the limiting plates on both sides of the single reel, that is, the reel 200, is equal to or slightly larger than the diameter of the hydraulic pipes 5, so that the hydraulic pipes 5 can only be arranged in a single row.

In some embodiments provided in the application, the protection groove 12 includes a groove provided on the outer circumferential surface of the guide rod 300 , and the hydraulic pipe passes through the groove on the surface of the guide rod 300 so that the groove restricts the swing of the hydraulic pipe.

Of course, the form of the protection groove 12 is not limited to the form of the above-mentioned groove.

For example, in some embodiments provided in the present application, the guide rod type grab includes two guide plates 9 , and the two guide plates 9 are arranged at intervals on the outer wall of the guide rod 300 , and form a protective groove 12 with the outer wall of the guide rod 300 .

In some embodiments provided in the present application, the guide bar grab is also connected to the plate 10 . The connecting plate 10 is connected to the guide rod 300 , and the two guiding plates 9 are respectively connected to both sides of the connecting plate 10 and form a protective groove 12 with the connecting plate 10 .

For example, the guide plate 9 and the connection plate 10 may be provided as an integrated structure, or the guide plate 9 may be connected to the connection plate 10 by welding.

Further, the connecting plate 10 can be connected with the guide rod 300 by welding or threaded connection.

In some embodiments provided by the present application, the cross section of the guide rod perpendicular to the axial direction is configured as a polygon. For example, the cross-section of the guide rod perpendicular to the axial direction is configured as a rectangle.

The rotary drilling rig of the present application will be described below with reference to FIGS. 4 to 11 .

As shown in FIG. 4 and FIG. 5 , a rotary drilling rig provided by the present application includes a drilling rig main body 1 , a rotary drilling method component 3 , a grab bucket component 4 and a pulley frame 2 .

Wherein, the drilling rig main body 1 may include a chassis, an upper carriage and a mast 11, the upper carriage is rotatably arranged on the chassis, and the mast 11 is arranged on the upper carriage.

The pulley frame 2 can be arranged on the top of the mast 11 of the rig main body 1, and the pulley frame 2 can include a frame body 22, a first pulley 21 and a second pulley 23, the frame body 22 is arranged on the top of the mast 11, and the first pulley 21 and the second pulley 23 are arranged on the frame body 22.

In addition, the pulley frame 2 can be wound with a wire rope 26, and the wire rope 26 can be connected with the rotary construction method assembly or the grab bucket assembly 4 after going around the first pulley 21 and the second pulley 23 in turn. In this way, the rotary construction method assembly and the grab bucket assembly 4 can be switched for use, so that the rotary drilling rig can realize the rotary excavation and the diaphragm wall duplex method.

And, along the length direction of the frame body 22, the position of the second pulley 23 is adjustable, like this, can adjust the distance between the second pulley 23 and the mast 11, thereby can adjust the center distance of the rotary excavation method assembly 3 or the grab assembly 4, so that the center distance of the two kinds of working devices of the rotary excavation method assembly 3 and the grab assembly 4 is different when realizing the two methods, so that the groove width of the grab assembly 4 is not limited.

Here, the second pulley 23 is detachably connected to the pulley frame 2 so as to adjust the position of the second pulley 23 .

In addition, there is a space between the wire rope 26 and the mast 11 to prevent the wire rope 26 from interfering with the mast 11 and affecting the normal operation of the rotary drilling rig. Specifically, along the direction in which the first pulley 21 is perpendicular to the length direction of the mast 11, there is a space between the first pulley 21 and the mast 11; along the direction in which the second pulley 23 is perpendicular to the length direction of the mast 11, there is a space between the second pulley 23 and the mast 11. Digging rigs work fine.

In this way, by adjusting the installation position of the second pulley 23 of the pulley frame 2, the center distance can be adjusted, so that the different requirements for the construction range under different construction methods can be realized; Connect with the wire rope 26, and adjust the installation position of the second pulley 23, so that the second pulley 23 is set away from the mast 11, the increase of the center distance can be realized, thereby meeting the large center distance requirement of the continuous wall construction method. It is only necessary to adjust the installation position of the second pulley 23 to meet the requirements of the two construction methods, and there is no need to replace the pulley frame 2, which is beneficial to reduce the manufacturing cost of the rotary drilling rig.

In an optional embodiment of the present application, the frame body 22 may be provided with at least two mounting holes for mounting the second pulley 23 ; and the mounting holes may be distributed along the length direction of the frame body 22 . In this way, by installing the second pulley 23 in different mounting holes, the distance between the second pulley 23 and the mast 11 can be adjusted, thereby realizing the adjustment of the center distance of the rotary digging method assembly 3 or the grab bucket assembly 4 .

In this embodiment, as shown in FIG. 6 and FIG. 7 , the frame body 22 can be provided with two mounting holes, the two mounting holes are respectively a first mounting hole 24 and a second mounting hole 25, the first mounting hole 24 can be disposed close to the mast 11, and the second mounting hole 25 can be disposed away from the mast 11.

Moreover, when the second pulley 23 is installed in the first installation hole 24 , the installation of the rotary drilling method assembly 3 can be adapted so that the distance between the second pulley 23 and the mast 11 meets the requirement of the center distance of the rotary drilling method assembly 3 .

When the second pulley 23 is installed in the second mounting hole 25 , the installation of the grab assembly 4 can be adapted so that the distance between the second pulley 23 and the mast 11 meets the requirement of the center distance of the grab assembly 4 .

Here, the second pulley 23 can be detachably connected to the installation hole through a pin shaft.

In an optional embodiment of the present application, the rotary drilling assembly 3 may include a circular drill rod 31, a drill bucket 33 and a drill head 32, wherein the top end of the circular drill rod 31 may be connected to the wire rope 26, specifically, the top end of the circular drill rod 31 may be connected to the wire rope 26 through a puller. The drill bucket 33 can be arranged at the bottom end of the circular drill rod 31 , and the drill rod head 32 is used to drive the circular drill rod 31 to rotate, so as to be able to drive the drill bucket 33 for drilling operations.

Here, the drill head 32 may be provided with a round hole, and the round hole is adapted to the round drill rod 31 . In this way, the drilling head 32 can drive the circular drilling rod 31 to rotate.

In an optional embodiment, the rotary drilling assembly 3 may also include a rotary drilling follower 34, one end of the rotary drill follower 34 is slidably connected to the mast 11, and the other end of the rotary drill follower 34 is rotationally connected with the circular drill rod 31 through a bearing, so as to guide and support the circular drill rod 31.

In an optional embodiment of the present application, as shown in FIG. 5 , the grab assembly 4 may include a square guide rod 41 , a grab 43 and a guiding and rotating device 42 .

Wherein, the top end of the square guide rod 41 can be connected with the wire rope 26, specifically, the top end of the square guide rod 41 can be connected with the wire rope 26 through a lifter.

Grab bucket 43 can be arranged on the bottom end of square guide rod 41, so that carry out grooving operation.

The guide rotation device 42 is used to drive the rotation of the square guide rod 41 to be able to drive the grab bucket 43 to rotate, so that the direction of the grab bucket 43 can be changed to meet the construction requirements of grooving and repairing at different angles.

Here, the guiding and rotating device 42 can be provided with a square hole, and the square hole can be matched with the square guide rod 41 . In this way, the guide rotation device 42 can drive the square drill rod to rotate.

In this way, the grab bucket 43 is connected through the square guide rod 41, and the guide and rotation device 42 is matched with the square guide rod 41. During the construction of the grab groove, the radial limit to the grab bucket 43 can be improved, and the shaking of the grab bucket 43 can be reduced or eliminated. The dual guidance of the grab bucket follower frame 44 and the guide and rotation device 42 effectively improves the verticality of the groove.

In an optional embodiment, the grab assembly 4 may also include a grab follower 44, one end of the grab follower 44 is slidingly connected to the mast 11, and the other end of the grab follower 44 is rotationally connected to the square guide rod 41 through a bearing, so as to support and guide the square guide rod 41.

In an optional embodiment of the present application, as shown in FIGS. 8-10 , the guiding and rotating device 42 may include a guiding frame body 422 , a power head sleeve 423 and a rotating driving device 424 .

Wherein, the guide frame body 422 can be slidably connected with the mast 11, and the power head sleeve 423 can be rotatably connected with the guide frame body 422, and the power head sleeve 423 is provided with a square hole for fixing the square guide rod 41; the rotation drive device 424 can be arranged on the guide frame body 422, and the rotation drive device 424 is used to drive the power head sleeve 423 to rotate to drive the square guide rod 41 to rotate, and the angle of the grab bucket 43 is adjusted so that the grab bucket 43 meets different angles to form a groove 1. The construction requirement of repairing the groove, realizing the multi-angle construction of the working device (ie grab bucket 43) when the rotary drilling rig performs the diaphragm wall construction method.

In an optional embodiment, the guide frame body 422 can be slidably connected with the mast 11 of the drilling rig main body 1 through the sliding frame 421 , so as to realize the up and down movement of the guide frame body 422 , thereby realizing the up and down movement of the grab bucket assembly 4 .

In an optional embodiment, the power head sleeve 423 and the guide frame body 422 can be rotatably connected through the slewing support 425. Specifically, the outer ring of the slewing support 425 is installed on the power head sleeve 423, and the inner ring of the slewing support 425 is installed on the guide frame body 422, and the rotation drive device 424 drives the outer ring and the inner ring of the slewing support 425 to rotate relatively, and then drives the power head sleeve 423 to rotate, thereby driving through the square hole of the power head sleeve 423 The square guide rod 41 rotates, realizes being installed in the rotation of the grab bucket 43 of square guide rod 41 bottoms.

In an optional embodiment, the rotation driving device 424 may be a first motor, the first motor is installed on the guide frame body 422 , and the first motor drives the outer ring of the slewing bearing 425 to rotate.

In an optional embodiment of the present application, as shown in FIG. 11 , the grab 43 may include a grab frame body 431 , a bucket body and a grab driving device.

Wherein, the grab frame body 431 can be connected with the bottom end of the square guide rod 41, the bucket body can include two grab bucket petals 433, the first ends of the two grab bucket petals 433 can be rotatably connected with the grab frame body 431, and the second ends of the two grab bucket petals 433 can be closed or separated, so as to be able to carry out trenching operations.

The grab driving device is used to drive the two grab bucket petals 433 to rotate, so that the second ends of the two grab bucket petals 433 are closed or separated. In this way, the grab bucket 43 can be driven by the grab bucket driving device to carry out the digging operation.

In an optional embodiment, the grab frame body 431 can be fixedly connected to the bottom end of the square guide rod 41 through the connecting seat 432 .

In an optional embodiment, the grab driving device may include two grab cylinders 434, and the two grab cylinders 434 may be arranged on opposite sides of the grab frame body 431, and the piston rods of the two grab cylinders 434 may be rotationally connected to the two grab petals 433, respectively. In this way, the expansion and contraction of the piston rods of the two grab cylinders 434 can respectively drive the two grab bucket petals 433 to rotate, so that the second ends of the two grab bucket petals 433 can be closed or separated, so that the grab bucket 43 can realize the grooving operation.

Here, the cylinder bodies of the two grab cylinders 434 can be fixedly connected with the grab frame body 431 through fixing bolts.

In an optional embodiment, the grab 43 can also include a slide block 435 and two push-pull rods 436, the slide block 435 can be slidably connected with the grab frame body 431, the first ends of the two push-pull rods 436 can be rotatably connected with the slide block 435, and the second ends of the two push-pull rods 436 can be rotatably connected with the two grab bucket petals 433 respectively. Moreover, the second ends of the two push-pull rods 436 can be rotatably connected with the two grab cylinders 434 respectively.

When the piston rod of the grab cylinder 434 stretches out, the grab bucket petal 433 rotates downward, and the grab bucket cylinder 434 can drive the push-pull rod 436 to move downward, thereby driving the slide block 435 to slide downward relative to the grab frame body 431, so that both the grab bucket cylinder 434 and the push-pull rod 436 can push the grab bucket petal 433 to push the second ends of the two grab bucket petals 433 to close, thereby realizing the closure of the grab bucket 43;

When the piston rod of the grab cylinder 434 shrinks, the grab bucket petals 433 rotate upwards, and the grab bucket cylinders 434 can drive the push-pull rod 436 to move upward, and then drive the slider 435 to slide upward relative to the grab frame body 431, so that both the grab bucket cylinder 434 and the push-pull rod 436 can pull the grab bucket petals 433 to separate the second ends of the two grab bucket petals 433, thereby realizing the opening of the grab bucket 43.

In an optional embodiment, a chute 437 may be provided on the grab frame body 431, the chute 437 is vertically arranged, and the slider 435 is slidably disposed in the chute 437, so as to realize the sliding connection between the slider 435 and the grab frame body 431.

Here, the chute 437 can be located in the middle of the grab frame body 431 to ensure the force balance of the two push-pull rods 436 , thereby ensuring the force balance of the two grab bucket petals 433 .

In an optional embodiment of the present application, as shown in FIG. 9 , the grab assembly 4 can also include two rubber hoses 45, and the two rubber hoses 45 can be respectively connected to the two grab cylinders 434, and the two rubber hoses 45 can be connected to the hydraulic system of the rotary drilling rig, so that the two grab cylinders 434 can be supplied with hydraulic oil through the two rubber hoses 45, respectively.

The grab bucket assembly 4 can also include two hose reeling devices 46 , and the two hose reeling devices 46 can be respectively used for retracting the two rubber hoses 45 , so that the two rubber hoses 45 can be lifted and lowered synchronously with the grab bucket 43 .

In addition, the two coiling devices 46 can be located on opposite sides of the guiding and rotating device 42, specifically, the two coiling devices 46 can be located on opposite sides of the power head sleeve 423, so that the rubber tube 45 can be prevented from being twisted and affecting oil supply or being damaged.

In an optional embodiment, the two reeling devices 46 can be arranged on the power head sleeve 423, so that the rotation of the power head sleeve 423 can drive the two reeling devices 46 to rotate synchronously, thereby driving the two rubber hoses 45 to rotate synchronously, so as to prevent the rubber hoses 45 from being twisted and damaged.

In an optional embodiment, the rolling tube 46 may include the rolling tube 461 and the second motor 462, the duct 461 can be installed on the power head sleeve 423, the rubber pipe 45 is wrapped on the rolled tube plate 461, and the second motor 462 can drive the rolling tube 461 to rotate, and then drives the positive reaction of the roll pipe plate 461. Put, and then realize the glue pipe 45 follow -up guide rod 41 and the grab 43 to run up and down simultaneously.

It should be noted that both the above-mentioned first motor and the second motor 462 may be geared motors.

In an optional embodiment of the present application, the grab assembly 4 may further include a limiting device 426 for limiting the rotation angle of the power head sleeve 423 .

In an optional embodiment, the limiting device 426 can include a limiting block and a limiting baffle, the limiting block can be arranged on the power head sleeve 423, the limiting baffle can be arranged on the guide frame body 422, and the limiting block can be opposed to the limiting baffle.

Specifically, the limit device 426 can include two limit baffles and one limit block, and the positions of the two limit baffles can be set according to the actual required angles. For example, if the grab bucket 43 is required to rotate between 90 degrees, the angle between the positions of the two limit baffles can be 90 degrees.

In another optional embodiment, the limiting device 426 may be an angle measuring device, and the angle measuring device may measure the rotation angle of the power head sleeve 423 .

Here, the angle measuring device may be an infrared angle measuring instrument, or an angle sensor, or other devices capable of detecting angles. The angle measuring device is not specifically limited, as long as it can detect the rotation angle.

In an optional embodiment, wear-resistant keys may be provided on the outer wall of the square guide rod 41 to improve the wear resistance of the square guide rod 41 and the vertical accuracy of the groove.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may also be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application.

Claims

A guide rod grab, comprising:

The guide rod, the side wall is provided with a protective groove extending along the axial direction of the guide rod;

a guide frame slidably arranged on the guide rod;

The reel is connected with the guide frame, and the reel can rotate around the reel;

A hydraulic grab bucket is connected to the guide rod;

The hydraulic pipe is wound on the reel, and the first end of the hydraulic pipe passes through the reel, passes along the protection groove and is connected with the hydraulic grab.
The guide rod grab bucket according to claim 1, further comprising a guide device;

The first end of the hydraulic pipe passes through the reel, passes through the guiding device and the protection groove in turn, and is connected with the grab bucket.
The guide rod grab bucket according to claim 2, wherein the guide device comprises a guide pulley set arranged on the guide frame.
The guide rod grab bucket according to claim 3, wherein the guiding device further comprises a mounting seat, the mounting seat is connected to the guide frame, and the guide pulley set is arranged on the mounting seat.
The guide rod grab bucket according to claim 3, wherein the pulley set includes a first fixed pulley and a second fixed pulley, and the number of the first fixed pulleys is set to two;

Wherein, the two first fixed pulleys are arranged opposite to each other, and an interval is provided between the outer circumferential surfaces of the two, so as to form a guide space for the hydraulic pipe to pass through;

The second fixed pulley is inserted into the protective groove;

The first end of the hydraulic pipe passes through the guide space and the second fixed pulley in sequence and enters the protection groove.
The guide rod grab bucket according to claim 4, wherein the mounting base includes two opposite support plates, both of which are connected to the guide frame, and a space is provided between the two support plates, and the guide pulley set is arranged between the two support plates.
The guide rod grab according to claim 1, wherein the reel is configured as a single row of reels.
The guide bar grab according to claim 1, wherein the protection groove includes a groove provided on an outer circumferential surface of the guide bar.
The guide rod grab bucket according to claim 1, further comprising two guide plates, the two guide plates are arranged at intervals on the outer wall of the guide rod, and form the protective groove with the outer wall of the guide rod.
The guide rod grab bucket according to claim 9, further comprising a connecting plate, the two guiding plates are respectively connected to two sides of the connecting plate, the connecting plates are connected to the guiding rod, and the connecting plate and the two guiding plates form the protective groove.
A rotary drilling rig, comprising:

main body of the drilling rig;

Rotary digging method components;

Grab bucket assembly, comprising the guide rod type grab bucket according to any one of claims 1-10;

The pulley frame includes a frame body, a first pulley and a second pulley, the frame body is arranged on the top of the mast of the drilling rig main body, and the first pulley and the second pulley are arranged on the frame body;

Wherein, a steel wire rope is wound on the pulley frame, and the steel wire rope is connected to the rotary excavation method assembly or the grab bucket assembly after passing around the first pulley and the second pulley in turn; a space is left between the steel wire rope and the mast to prevent mutual interference;

Along the length direction of the frame body, the position of the second pulley is adjustable.
The rotary drilling rig according to claim 11, wherein, the frame is provided with:

At least two mounting holes are distributed along the length direction of the frame, and the mounting holes are used for mounting the second pulley.
The rotary drilling rig according to claim 11, wherein the rotary drilling method assembly comprises:

A round drill pipe, the top end of which is connected to the wire rope;

a drill bucket, arranged at the bottom end of the circular drill rod;

The drill bit is used to drive the circular drill to rotate, and the drill bit is provided with a circular hole matching the circular drill.
The rotary drilling rig according to claim 11, wherein the grab assembly further comprises:

A square guide rod, the top of which is connected to the steel wire rope;

A grab bucket is arranged at the bottom end of the square guide rod;

The guide rotation device is used to drive the rotation of the square guide rod, and the guide rotation device is provided with a square hole suitable for the square guide rod.
The rotary drilling rig according to claim 14, wherein said guiding rotation device comprises:

a guide frame body, which is slidably connected with the mast;

The power head sleeve is rotatably connected with the guide frame body, and the power head sleeve is provided with the square hole;

A rotary driving device is arranged on the guide frame body, and the rotary driving device is used to drive the power head sleeve to rotate.
The rotary drilling rig according to claim 14 or 15, wherein the grab comprises:

The grab frame body is connected with the bottom end of the square guide rod;

The bucket body includes two grab bucket petals, and the first ends of the two grab bucket petals are both rotatably connected to the grab frame body;

The grab bucket driving device is used to drive the two grab bucket flaps to rotate, so that the second ends of the two grab bucket flaps are closed or separated.
The rotary drilling rig according to claim 16, wherein the grab driving device comprises:

Two grab cylinders are arranged on opposite sides of the grab frame, and the piston rods of the two grab cylinders are respectively rotatably connected to the two grab petals.
The rotary drilling rig according to claim 17, wherein the grab assembly further comprises:

Two rubber hoses are respectively connected to the two grab cylinders;

Two hose reeling devices are arranged on the guide and rotation device, and the two reeling hose devices are respectively used for retracting and unwinding the two rubber hoses.
The rotary drilling rig according to claim 16, wherein the grab bucket further comprises:

The slider is slidably connected with the grab frame body;

Two push-pull rods, the first ends of the two push-pull rods are both rotatably connected with the slider, and the second ends of the two push-pull rods are rotatably connected with the two grab bucket petals respectively.
The rotary drilling machine according to claim 15, wherein the grab assembly further comprises a limiting device for limiting the rotation angle of the power head sleeve.