CN116201120A - Pile casing lifting device and piling machinery - Google Patents

Abstract

The invention relates to the technical field of engineering machinery, and provides a pile casing lifting device and a pile engineering machine, wherein the pile casing lifting device comprises a mast, a movable clamp holder and a hoisting mechanism, a first pulley is arranged at a first end of the mast, the movable clamp holder comprises a movable clamp holder body and a second pulley, the movable clamp holder body is in sliding connection with the mast, the sliding direction is parallel to the extending direction of the mast, the second pulley is in rotary connection with the movable clamp holder body, and the rotation axis of the first pulley and the rotation axis of the second pulley are perpendicular to the extending direction of the mast; the hoisting mechanism comprises a winding drum and a traction rope, the first end of the traction rope is connected with the winding drum, the second end of the traction rope is fixedly connected with the mast after sequentially winding around the first pulley and the second pulley, and the distance between the second end of the traction rope and the first end of the mast is smaller than that between the second pulley and the first end of the mast. So set up, solved among the prior art to have complex operation, the low problem of work efficiency when promoting and lowering the great protective casing of length.

Description

Pile casing lifting device and piling machinery

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a pile casing lifting device and pile engineering machinery.

Background

The anchor rod is generally used for foundation pit support, anti-floating piles, side slope treatment and the like, and when the anchor rod is constructed, the anchor rod is required to be perforated at a target position, then the anchor rod, the anchor rope and the like are inserted into a hole, and then concrete is poured into the hole to strengthen the anchor rod. For softer soil, after punching, a casing is placed in the hole, then the anchor rod is inserted into the casing, and the casing is taken out after concrete is poured. The hole wall is supported by the pile casing, so that the collapse problem can be prevented.

When the protective cylinder is put into the hole or taken out from the hole, the protective cylinder needs to be clamped by the movable clamp holder, and the lifting and the lowering of the protective cylinder can be realized by driving the movable clamp holder to lift. For a larger length casing, it is necessary to mate the stationary holder with the movable holder. Taking the process of lowering the pile casing into the hole as an example, the static clamp clamps the lower end of the pile casing, the movable clamp is adjusted to the highest position point which can be reached by the static clamp, the pile casing is clamped by the movable clamp, and a larger distance exists between the movable clamp and the upper end of the pile casing. And then the static clamp holder releases the protective cylinder, and the protective cylinder can be lowered by driving the movable clamp holder to descend. When the movable clamp holder descends to the lowest position point reached by the movable clamp holder, the movable clamp holder and the upper end of the protective cylinder have a larger distance, namely the protective cylinder is not completely placed in the hole, at the moment, the static clamp holder is required to clamp the protective cylinder, the movable clamp holder is enabled to release the protective cylinder, the movable clamp holder is lifted again, and the movable clamp holder is used for clamping the protective cylinder again and is placed downwards.

In the prior art, a hydraulic cylinder is generally arranged on a mast, and the hydraulic cylinder is used for driving the movable clamp holder to lift, so that the movable clamp holder needs to be lifted repeatedly when the length of a single-section pile casing is large due to the small stroke of the hydraulic cylinder, the operation is complex, and the working efficiency is low. If an ultra-large stroke hydraulic cylinder is designed for the movable clamp, the cost is excessive.

Therefore, how to solve the problems of complicated operation and low working efficiency when lifting and lowering the pile casing with larger length in the prior art becomes an important technical problem to be solved by the technicians in the field.

Disclosure of Invention

The invention provides a pile casing lifting device and a pile driver machine, which are used for solving the defects of complicated operation and low working efficiency in the prior art when a pile casing with a large length is lifted and lowered.

The invention provides a pile casing lifting device, comprising:

the first end of the mast is provided with a first pulley capable of rotating in a fixed shaft manner, and the rotating axis of the first pulley is perpendicular to the extending direction of the mast;

the movable clamp holder comprises a movable clamp holder body and a second pulley, the movable clamp holder body is in sliding connection with the mast, the sliding direction of the movable clamp holder body is parallel to the extending direction of the mast, the second pulley is in rotary connection with the movable clamp holder body, and the rotary axis of the second pulley is perpendicular to the extending direction of the mast;

the hoisting mechanism comprises a winding drum arranged on the mast and a traction rope with a first end connected with the winding drum, wherein a second end of the traction rope sequentially bypasses the first pulley and the second pulley and is fixedly connected with the mast, and the distance between the second end of the traction rope and the first end of the mast is smaller than that between the second pulley and the first end of the mast.

According to the invention, the pile casing lifting device further comprises:

the static clamp holder is arranged at the second end of the mast, the static clamp holder and the movable clamp holder are respectively provided with a clamping space, and a straight line where the center of the clamping space of the static clamp holder and the center of the clamping space of the movable clamp holder are is parallel to the extending direction of the mast.

According to the invention, the movable clamp holder comprises:

the fixed frame is connected with the mast in a sliding manner, and the second pulley is arranged on the fixed frame;

the rotating frame is provided with a clamping space, the rotating frame is rotationally connected with the fixing frame, the rotating axis is parallel to the extending direction of the mast and coincides with the central line of the clamping space, and the rotating frame is provided with a clamping mechanism for clamping the protective cylinder;

the first driving piece is arranged to drive the rotating frame to rotate relative to the fixed frame.

According to the invention, the rotating frame comprises:

the rotating frame body is rotationally connected with the fixing frame, and a notch which can enable the protective cylinder to enter and exit the clamping space is formed in one end, away from the mast, of the rotating frame body;

the connecting frame is arranged at one end of the rotating frame body, which is far away from the mast, and both ends of the connecting frame are connected with the rotating frame body so as to seal the notch, and the connecting frame is detachably connected with the rotating frame body.

According to the pile casing lifting device provided by the invention, the rotating frame is connected with the fixed frame through the slewing mechanism, and the slewing mechanism comprises:

a rotary groove which is in a circular arc shape extending along the circumferential direction of the clamping space;

the rotary block is in sliding fit with the rotary groove, the rotary block is in a circular arc shape extending along the circumferential direction of the clamping space, one of the rotary groove and the rotary block is arranged on the fixing frame, and the other rotary block is arranged on the rotary frame.

According to the invention, the fixing frame comprises:

the rotary frame comprises a mast, a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are relatively fixed and are distributed at intervals along the extending direction of the mast, the rotary frame is arranged between the first fixing plate and the second fixing plate, a slewing mechanism is arranged between the first fixing plate and the rotary frame, and a slewing mechanism is arranged between the second fixing plate and the rotary frame.

According to the pile casing lifting device provided by the invention, the first wear-resisting plate and the second wear-resisting plate are arranged between the fixed frame and the rotating frame, the first wear-resisting plate is relatively fixed with the fixed frame, the second wear-resisting plate is relatively fixed with the rotating frame, and the first wear-resisting plate is in sliding contact with the second wear-resisting plate.

According to the invention, the clamping mechanism comprises:

the clamping blocks are arranged, each clamping block is distributed along the circumferential direction of the clamping space, the clamping blocks are connected with the rotating frame in a sliding manner, and the sliding direction of the clamping blocks is arranged along the radial direction of the clamping space;

the second driving parts are arranged to drive the clamping blocks to slide relative to the rotating frame, and each clamping block is correspondingly connected with one second driving part.

According to the invention, the pile casing lifting device comprises:

the clamping part is provided with two clamping surfaces which are arranged at an angle;

the sliding part is arranged on one side, far away from the clamping space, of the clamping part, a sliding channel for the sliding part to slide back and forth is arranged on the rotating frame, a third wear-resisting plate is arranged on the outer side wall of the sliding part, a fourth wear-resisting plate is arranged on the side wall of the sliding channel, and the third wear-resisting plate is in sliding contact with the fourth wear-resisting plate.

The invention also provides a piling machine, which comprises the pile casing lifting device.

The invention provides a pile casing lifting device which comprises a mast, a movable clamp holder and a hoisting mechanism, wherein a first pulley is arranged at the first end of the mast, the first pulley is rotationally connected with the mast, and the rotating axis of the first pulley relative to the mast is vertical to the extending direction of the mast. The movable clamp holder comprises a movable clamp holder body and a second pulley, the movable clamp holder body is connected with the mast in a sliding manner, and the sliding direction is parallel to the extending direction of the mast. The second pulley is rotationally connected with the movable clamp holder body, and the rotation axis of the second pulley relative to the mast is perpendicular to the extending direction of the mast. When the pile casing lifting device works, the extending direction of the mast is generally along the vertical direction, at this moment, the first end of the mast is the top end of the mast, the first pulley is positioned at the top end of the mast, the movable clamp holder can slide along the vertical direction, the rotating axis of the first pulley and the rotating axis of the second pulley are both along the horizontal direction, and the height of the first pulley is larger than that of the second pulley. The winding mechanism comprises a winding drum and a traction rope, the winding drum is arranged on the mast, the first end of the traction rope is connected with the winding drum, and the winding drum rotates to wind or release the traction rope. The second end of the traction rope is fixedly connected with the mast after sequentially bypassing the first pulley and the second pulley. The distance between the second end of the hauling rope and the first end of the mast is smaller than the distance between the second pulley and the first end of the mast, i.e. the height of the second pulley is always lower than the height of the second end of the hauling rope in the lifting process of the movable clamp holder. The mast is erected, the winding drum is controlled to rotate positively, the winding drum is wound with the traction rope, and the second pulley slides upwards relative to the mast under the action of the traction rope, so that the movable clamp holder body is driven to slide upwards, namely the movable clamp holder integrally rises. The winding drum is controlled to rotate reversely, so that the winding drum releases the traction rope, and the second pulley and the movable clamp holder body slide downwards relative to the mast under the action of the gravity of the second pulley and the movable clamp holder body, namely, the movable clamp holder integrally descends. The lifting distance of the movable clamp holder is determined by the length of the traction rope wound or released by the winding drum, if the movable clamp holder slides in a larger distance range, for example, the movable clamp holder can slide in the whole process between the two ends of the mast, only the sufficient length of the traction rope is required to be ensured, the cost of the traction rope is lower, and the influence on the cost of the pile casing lifting device is smaller. After the movable clamp holder can slide in a larger distance range, the times of lifting the movable clamp holder can be effectively reduced in the lifting or lowering process for the protective cylinder with larger single-section length, so that the operation steps are simplified, the working efficiency is improved, and the problems of complex operation and low working efficiency in the process of lifting and lowering the protective cylinder with larger length in the prior art are solved.

Further, the pile machine according to the present invention includes the pile casing lifting device as described above, and thus has various advantages as described above.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a pile casing lifting device according to the present invention;

fig. 2 is a schematic diagram of a connection structure between a second pulley and a hoisting mechanism (a movable gripper body is not shown);

FIG. 3 is a schematic view of a movable holder according to the present invention;

FIG. 4 is a schematic diagram of a second embodiment of the movable holder according to the present invention;

FIG. 5 is an enlarged view of I in FIG. 3;

fig. 6 is a schematic structural view of the piling machine provided by the present invention.

Reference numerals:

1. a mast; 2. a first pulley; 3. a movable clamp holder; 4. a second pulley; 5. a reel; 6. a traction rope; 7. a static clamp holder; 8. a clamping space; 9. a fixing frame; 10. a first driving member; 11. a rotating frame body; 12. a connecting frame; 13. a slewing mechanism; 14. a rotary groove; 15. a swivel block; 16. a first fixing plate; 17. a protective barrel; 18. a first wear plate; 19. a second wear plate; 20. clamping blocks; 21. a second driving member; 22. and a guide pulley.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The pile casing lifting device of the present invention is described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the pile casing lifting device provided by the embodiment of the invention comprises a mast 1, a movable clamp holder 3 and a hoisting mechanism.

Specifically, the first end of the mast 1 is provided with a first pulley 2, the first pulley 2 is rotatably connected with the mast 1, and the rotation axis of the first pulley 2 relative to the mast 1 is perpendicular to the extending direction of the mast 1.

The movable gripper 3 comprises a movable gripper body and a second pulley 4, the movable gripper body is in sliding connection with the mast 1, and the sliding direction is parallel to the extending direction of the mast 1. The second pulley 4 is rotatably connected with the movable holder body, and the rotation axis of the second pulley 4 relative to the mast 1 is perpendicular to the extending direction of the mast 1.

When the pile casing lifting device works, the extending direction of the mast 1 is generally along the vertical direction, at this time, the first end of the mast 1 is the top end of the mast 1, the first pulley 2 is located at the top end of the mast 1, the movable gripper 3 can slide along the vertical direction, the rotation axis of the first pulley 2 and the rotation axis of the second pulley 4 are both along the horizontal direction, and the height of the first pulley 2 is greater than that of the second pulley 4, referring to fig. 1.

The winding mechanism comprises a winding drum 5 and a traction rope 6, the winding drum 5 is arranged on the mast 1, a first end of the traction rope 6 is connected with the winding drum 5, and the winding drum 5 rotates to wind or release the traction rope 6. The second end of the hauling rope 6 is fixedly connected with the mast 1 after sequentially bypassing the first pulley 2 and the second pulley 4, as shown in fig. 2. The distance between the second end of the hauling rope 6 and the first end of the mast 1 is smaller than the distance between the second pulley 4 and the first end of the mast 1, i.e. the height of the second pulley 4 is always lower than the height of the second end of the hauling rope 6 during the lifting of the movable gripper 3.

To ensure stability of the casing lifting device, a reel 5 may be provided at the second end of the mast 1. In order to avoid interference between the hauling rope 6 and the components such as the mast 1, a guide pulley 22 can be arranged on the mast 1, the guide pulley 22 is positioned between two ends of the mast 1, and the hauling rope 6 is supported by the guide pulley 22 so as to increase the distance between the hauling rope 6 and the mast 1.

The mast 1 is erected, the winding drum 5 is controlled to rotate positively, the winding drum 5 winds the traction rope 6, the second pulley 4 slides upwards relative to the mast 1 under the action of the traction rope 6, and accordingly the movable clamp holder body is driven to slide upwards, namely the movable clamp holder 3 integrally ascends.

The reel 5 is controlled to rotate reversely, so that the reel 5 releases the traction rope 6, and the second pulley 4 and the movable clamp body slide downwards relative to the mast 1 under the action of self gravity, namely, the movable clamp 3 descends integrally.

The lifting distance of the movable clamp holder 3 is determined by the length of the traction rope 6 wound or released by the winding drum 5, if the movable clamp holder 3 is required to slide within a larger distance range, for example, the movable clamp holder 3 can slide in the whole process between two ends of the mast 1, only the sufficient length of the traction rope 6 is required to be ensured, the cost of the traction rope 6 is lower, and the influence on the cost of the pile casing lifting device is smaller.

After the movable clamp holder 3 is ensured to slide in a larger distance range, the times of lifting the movable clamp holder 3 can be effectively reduced in the lifting or lowering process for the protective cylinder 17 with larger single-section length, so that the operation steps are simplified, the working efficiency is improved, and the problems of complex operation and low working efficiency in the process of lifting and lowering the protective cylinder 17 with larger length in the prior art are solved.

In addition, the traction rope 6 of the hoisting mechanism winds below the second pulley 4 from top to bottom and winds above the second pulley 4 from bottom to top, so that double lifting force can be provided for the second pulley 4 and the movable clamp holder 3, and the requirement on the bearing capacity of the hoisting mechanism is reduced.

In the embodiment of the invention, the pile casing lifting device further comprises a static clamp 7, and the static clamp 7 is arranged at the second end of the mast 1. When the pile casing lifting device is in operation, the second end of the mast 1 is the bottom end of the mast 1.

The static clamp 7 and the movable clamp 3 are provided with clamping spaces 8, and a straight line where the center of the clamping space 8 of the static clamp 7 and the center of the clamping space 8 of the movable clamp 3 are positioned is parallel to the extending direction of the mast 1. When the pile casing 17 is lifted and lowered, the pile casing 17 is passed through the holding space 8, so that the movable holder 3 or the stationary holder 7 clamps and fixes the pile casing 17.

The movable holder 3 in this embodiment includes a fixed frame 9, a rotary frame, and a first driving member 10, referring to fig. 3 to 5.

The fixed frame 9 is slidably connected to the mast 1, and specifically, a guide rail is provided on the mast 1, and the extending direction of the guide rail is identical to the extending direction of the mast 1. A carriage body is arranged on the fixing frame 9 and is in sliding fit with the guide rail. Be used for on the balladeur train body with guide rail sliding fit's the surface be provided with the antifriction plate, antifriction plate replaces mount 9 and guide rail sliding fit, can avoid the wearing and tearing to mount 9, the maintenance of conveniently maintaining reduces maintenance cost.

The second pulley 4 is arranged on the fixed frame 9, so that the second pulley 4 is rotationally connected with the fixed frame 9, and the rotation axis of the second pulley 4 relative to the fixed frame 9 is perpendicular to the extending direction of the mast 1. Specifically, a bearing may be provided between the second pulley 4 and the fixed frame 9 such that the axis of the bearing is perpendicular to the extending direction of the mast 1.

The clamping space 8 is arranged on the rotating frame, a clamping mechanism is arranged on the rotating frame, after the pile casing 17 passes through the clamping space 8, the pile casing 17 is clamped by the clamping mechanism, the pile casing 17 and the rotating frame are relatively fixed, and the central axis of the pile casing 17 is overlapped with the central axis of the clamping space 8.

The rotating frame is rotationally connected with the fixed frame 9, the rotating axis of the rotating frame relative to the fixed frame 9 is parallel to the extending direction of the mast 1, and the center line of the clamping space 8 is overlapped with the rotating axis of the rotating frame relative to the fixed frame 9. When the rotary frame rotates relative to the fixed frame 9, the casing 17 rotates about its own central axis.

The first driving member 10 is disposed between the rotating frame and the fixed frame 9, and is used for driving the rotating frame to rotate relative to the fixed frame 9.

Specifically, a hydraulic cylinder may be selected as the first driving member 10. The cylinder barrel of the hydraulic oil cylinder is rotationally connected with the fixing frame 9, and the piston rod of the hydraulic oil cylinder is rotationally connected with the rotating frame. The axes of rotation of the cylinder barrel of the hydraulic cylinder with respect to the fixed frame 9 and of the rotating frame with respect to the piston rod of the hydraulic cylinder are mutually parallel and both are parallel to the axis of rotation of the rotating frame with respect to the fixed frame 9. The rotating frame body 11 can rotate relative to the fixed frame 9 by controlling the expansion and contraction of the hydraulic oil cylinder.

The structure of the static gripper 7 is similar to that of the movable gripper 3, but the static gripper 7 does not have a rotating frame and a first driving piece 10, and the static gripper 7 only needs to clamp and release the protective cylinder 17 and does not need to drive the protective cylinder 17 to rotate relative to the mast 1. Specifically, the static gripper 7 comprises a support frame fixedly connected to the second end of the mast 1. The support frame is provided with a clamping space 8, a clamping mechanism is arranged on the support frame, after the pile casing 17 passes through the clamping space 8, the pile casing 17 is clamped by the clamping mechanism, the pile casing 17 and the support frame are relatively fixed, and the central axis of the pile casing 17 coincides with the central axis of the clamping space 8.

When the anchor rod is operated, if the anchoring depth of the anchor rod is large, a deep hole needs to be machined. When the depth of the hole is greater than the length of the casing 17, multiple sections of casing 17 need to be spliced together. When connecting two segments 17 together, it is necessary to rotate the two segments 17 relative to one another. In this embodiment, the static holder 7 can be made to hold and fix one section of the protection tube 17, the movable holder 3 is made to hold and fix another section of the protection tube 17, the first driving member 10 drives the rotating frame body 11 to drive the protection tube 17 to rotate relative to the fixing frame 9, and thus the relative rotation of the two sections of protection tubes 17 can be realized, and the automatic disassembly and assembly of the two sections of protection tubes 17 can be realized.

When the two segments 17 are connected to or disconnected from each other, the two segments 17 are moved toward or away from each other while rotating relative to each other. Therefore, at this time, the first driving member 10 is used to drive the rotating frame body 11 to rotate, and the hoisting mechanism is used to drive the movable holder 3 to lift, so as to avoid a force generated between the rotating frame body 11 and the casing 17 along the axial direction of the casing 17.

In the present embodiment, the rotating frame includes a rotating frame body 11 and a connecting frame 12.

The rotating frame body 11 is rotationally connected with the fixing frame 9, a notch is formed in one end, far away from the mast 1, of the rotating frame body 11, and the notch can enable the protective cylinder 17 to enter and exit the clamping space 8.

The connecting frame 12 is disposed at one end of the rotating frame body 11 far away from the mast 1, two ends of the connecting frame 12 are connected with the rotating frame body 11, and the connecting frame 12 is matched with the rotating frame body 11 to seal the gap.

The connecting frame 12 is detachably connected with the rotating frame body 11, and when the protective cylinder 17 needs to be installed in the clamping space 8, the connecting frame 12 needs to be detached from the rotating frame body 11, so that the protective cylinder 17 can conveniently enter the clamping space 8. After the pile casing 17 is installed in the clamping space 8 and the pile casing 17 is clamped and fixed by the clamping mechanism, the two ends of the connecting frame 12 are respectively connected with the rotating frame body 11, so that the rigidity and strength of the rotating frame body 11 are improved.

Specifically, both ends of the connection frame 12 may be connected to the rotating frame body 11 in a hinge manner. When the protective tube 17 is to be fitted into the holding space 8, only one end of the link 12 may be detached from the rotary frame body 11, and the link 12 may be rotated relative to the rotary frame body 11. The arrangement is simple to operate without completely disassembling the connecting frame 12, and the loss of parts can be avoided.

In the embodiment of the invention, the rotating frame is connected with the fixed frame 9 through the slewing mechanism 13.

Specifically, the swing mechanism 13 includes a swing groove 14 and a swing block 15, the swing block 15 is embedded in the swing groove 14, and the swing block 15 is slidably fitted with the swing groove 14.

The turning block 15 and the turning groove 14 are both arc-shaped, and the arc-shaped extends along the circumferential direction of the clamping space 8. The extension length of the swivel groove 14 in the circumferential direction of the clamping space 8 is longer than the extension length of the swivel block 15 in the circumferential direction of the clamping space 8. The difference between the extension length of the swivel groove 14 in the circumferential direction of the clamping space 8 and the extension length of the swivel block 15 in the circumferential direction of the clamping space 8 corresponds to the swivel space of the swivel block 15 within the swivel groove 14.

One of the rotation groove 14 and the rotation block 15 is provided in the fixed frame 9, and the other is provided in the rotating frame. As shown in fig. 5, the swivel groove 14 is provided in the swivel frame, and the swivel block 15 is provided in the fixed frame 9. For easy installation, the swivel block 15 is detachably connected to the fixing frame 9 by a plurality of bolts.

In this embodiment, the fixing frame 9 includes a first fixing plate 16 and a second fixing plate.

The first fixing plate 16 and the second fixing plate are relatively fixed and are distributed at intervals along the extending direction of the mast 1. A certain space is reserved between the first fixing plate 16 and the second fixing plate, and the rotating frame is positioned between the first fixing plate 16 and the second fixing plate. The two oppositely disposed surfaces of the swivel mount cooperate with the first and second fixed plates 16, respectively. The rotation mechanism 13 is provided between the first fixing plate 16 and the rotating frame, the rotation mechanism 13 is also provided between the second fixing plate and the rotating frame, the rotation grooves 14 of the two rotation mechanisms 13 are provided on the rotating frame, and the rotation blocks 15 of the two rotation mechanisms 13 are provided on the first fixing plate 16 and the second fixing plate of the fixing frame 9, respectively.

The two slewing mechanisms 13 are matched, so that the relative stability of the rotating frame and the fixed frame 9 can be ensured, and the rotating frame and the fixed frame are jointly guided in a rotating way.

In this embodiment, a first wear-resistant plate 18 and a second wear-resistant plate 19 are disposed between the fixing frame 9 and the rotating frame, the first wear-resistant plate 18 is relatively fixed with the fixing frame 9, the second wear-resistant plate 19 is relatively fixed with the rotating frame, and the first wear-resistant plate 18 is in sliding contact with the second wear-resistant plate 19 during the rotation of the rotating frame relative to the fixing frame 9. The first wear-resisting plate 18 and the second wear-resisting plate 19 replace the fixed frame 9 and the rotating frame to be contacted, so that the abrasion to the fixed frame 9 and the rotating frame can be avoided, and when the abrasion between the first wear-resisting plate 18 and the second wear-resisting plate 19 is serious, the new first wear-resisting plate 18 and the new second wear-resisting plate 19 can be directly replaced. The second wear-resistant plate 19 and the first wear-resistant plate 18 are formed by processing wear-resistant materials, so that the wear rate is low, the number of times of replacing the wear-resistant plates can be reduced, and the maintenance frequency of the pile casing lifting device is reduced.

In this embodiment, the clamping mechanism comprises a clamping block 20 and a second driving member 21.

The clamping blocks 20 are provided in at least two, and each clamping block 20 is distributed along the circumferential direction of the clamping space 8. The clamping blocks 20 are in sliding connection with the rotating frame, and the sliding direction is arranged along the radial direction of the clamping space 8.

The clamping mechanism comprises two clamping blocks 20, the two clamping blocks 20 are oppositely arranged, the two clamping blocks 20 correspond to the same cross section of the casing 17, and the two clamping blocks 20 are symmetrical about the center line of the clamping space 8.

Each clamping block 20 is correspondingly connected with a second driving piece 21, and the second driving piece 21 is arranged between the clamping block 20 and the rotating frame and is used for driving the clamping block 20 to slide relative to the rotating frame.

Specifically, a hydraulic cylinder may be selected as the second driving member 21, a cylinder barrel of the hydraulic cylinder may be connected to the rotating frame, and a piston rod of the hydraulic cylinder may be connected to the clamping block 20. The hydraulic cylinder is controlled to stretch and retract, so that the clamping block 20 can be driven to slide relative to the rotating frame.

In a preferred embodiment, the cylinder barrel of the hydraulic cylinder can be rotationally connected with the rotating frame, and the piston rod of the hydraulic cylinder is rotationally connected with the clamping block 20. The axes of rotation of the cylinder barrel of the hydraulic cylinder with respect to the swivel mount and of the clamping block 20 with respect to the piston rod of the hydraulic cylinder are mutually parallel and both parallel to the axis of rotation of the swivel mount with respect to the fixed mount 9. Therefore, the stress of the hydraulic oil cylinder can be optimized, and the requirement on the bearing capacity of the hydraulic oil cylinder is reduced.

The clamp block 20 includes a clamp portion and a slide portion. The clamping part has two clamping surfaces, and two clamping surfaces angulation setting is the V type promptly, and clamping part promptly can be applicable to the pile casing 17 of centre gripping different diameters, and clamping mechanism presss from both sides when tight pile casing 17 in addition, two clamping surfaces all interact with pile casing 17, have increased the area of contact of clamping part and pile casing 17, are favorable to improving clamping mechanism's reliability.

The anti-skid textures are arranged on each clamping surface of the clamping part, so that the friction force between the clamping surface and the pile casing 17 can be increased by utilizing the anti-skid textures, and the reliability of the clamping mechanism can be further improved.

The sliding part is arranged at one side of the clamping part far away from the clamping space 8, and the sliding part is used for being in sliding connection with the rotating frame.

The rotating frame is provided with a sliding channel, and the sliding channel can be used for the sliding part to extend into and allow the sliding part to slide back and forth. The sliding part is matched with the sliding channel and can guide the sliding part in a reciprocating sliding way.

The outer side wall of the sliding part is provided with a third wear-resistant plate, the side wall of the sliding channel is provided with a fourth wear-resistant plate, and the third wear-resistant plate is in sliding contact with the fourth wear-resistant plate. The third wear-resisting plate and the fourth wear-resisting plate replace the sliding part to be contacted with the rotating frame, so that the abrasion of the rotating frame and the sliding part can be avoided, and when the abrasion of the third wear-resisting plate and the fourth wear-resisting plate is serious, the new third wear-resisting plate and the new fourth wear-resisting plate can be directly replaced. The third wear-resisting plate and the fourth wear-resisting plate are formed by processing wear-resisting materials, the wear rate is low, the frequency of replacing the wear-resisting plates can be reduced, and the maintenance frequency of the pile casing lifting device is reduced.

The sliding part is arranged into a box-type structure with a hollow structure, so that the quality of the pile casing lifting device can be reduced, and the load of the hoisting mechanism can be reduced.

The hydraulic cylinder as the second driving member 21 may extend into the sliding portion so that one end of the sliding portion near the clamp block 20 is connected to the end of the piston rod of the hydraulic cylinder. When the piston rod of the hydraulic cylinder extends out and the clamping mechanism acts with the casing 17, the bending moment on the piston rod can be reduced.

The cross section of the sliding part and the cross section of the sliding channel are rectangular, corresponding third wear plates can be arranged on the four outer side surfaces of the sliding part, and corresponding fourth wear plates are arranged on the four side walls of the sliding channel.

On the other hand, the embodiment of the invention also provides a piling machine, which comprises the pile casing lifting device provided by any embodiment. The pile casing lifting device in the embodiment can slide in a larger distance range, and for the pile casing with larger single-section length, the number of times of lifting the movable clamp holder can be reduced, so that the operation steps are simplified, and the working efficiency is improved. Therefore, the piling machine in the embodiment has the advantages of simplicity in operation and high working efficiency. The development process of the beneficial effects of the pile driving machine in the embodiment of the present invention is substantially similar to that of the pile casing lifting device, and therefore will not be repeated here.

In an embodiment of the present invention, a piling machine includes a machine body and a pile casing lifting device, a mast of the pile casing lifting device being rotatably connected to the machine body about a horizontal axis, as shown in FIG. 6. A driving device is arranged between the mast of the pile casing lifting device and the machine body and is used for driving the mast to rotate relative to the machine body so as to erect or transversely put the mast.

It should be noted that, the pile casing lifting device and the working device of the rotary drilling rig in the embodiment of the invention can be integrated into a whole so as to realize the versatility of the piling machinery.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A casing lifting device, comprising:

the first end of the mast is provided with a first pulley capable of rotating in a fixed shaft manner, and the rotating axis of the first pulley is perpendicular to the extending direction of the mast;

the movable clamp holder comprises a movable clamp holder body and a second pulley, the movable clamp holder body is in sliding connection with the mast, the sliding direction of the movable clamp holder body is parallel to the extending direction of the mast, the second pulley is in rotary connection with the movable clamp holder body, and the rotary axis of the second pulley is perpendicular to the extending direction of the mast;

the hoisting mechanism comprises a winding drum arranged on the mast and a traction rope with a first end connected with the winding drum, wherein a second end of the traction rope sequentially bypasses the first pulley and the second pulley and is fixedly connected with the mast, and the distance between the second end of the traction rope and the first end of the mast is smaller than that between the second pulley and the first end of the mast.

2. The casing lifter of claim 1 further comprising:

the static clamp holder is arranged at the second end of the mast, the static clamp holder and the movable clamp holder are respectively provided with a clamping space, and a straight line where the center of the clamping space of the static clamp holder and the center of the clamping space of the movable clamp holder are is parallel to the extending direction of the mast.

3. A casing lifting device according to claim 1 or claim 2 wherein the movable holder comprises:

the fixed frame is connected with the mast in a sliding manner, and the second pulley is arranged on the fixed frame;

the rotating frame is provided with a clamping space, the rotating frame is rotationally connected with the fixing frame, the rotating axis is parallel to the extending direction of the mast and coincides with the central line of the clamping space, and the rotating frame is provided with a clamping mechanism for clamping the protective cylinder;

the first driving piece is arranged to drive the rotating frame to rotate relative to the fixed frame.

4. A casing lifting device according to claim 3 wherein the swivel mount comprises:

the rotating frame body is rotationally connected with the fixing frame, and a notch which can enable the protective cylinder to enter and exit the clamping space is formed in one end, away from the mast, of the rotating frame body;

the connecting frame is arranged at one end of the rotating frame body, which is far away from the mast, and both ends of the connecting frame are connected with the rotating frame body so as to seal the notch, and the connecting frame is detachably connected with the rotating frame body.

5. The cartridge cage lifting device of claim 4 wherein the swivel mount is coupled to the mount by a swivel mechanism comprising:

a rotary groove which is in a circular arc shape extending along the circumferential direction of the clamping space;

the rotary block is in sliding fit with the rotary groove, the rotary block is in a circular arc shape extending along the circumferential direction of the clamping space, one of the rotary groove and the rotary block is arranged on the fixing frame, and the other rotary block is arranged on the rotary frame.

6. The casing lifter of claim 5 wherein the mount comprises:

the rotary frame comprises a mast, a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are relatively fixed and are distributed at intervals along the extending direction of the mast, the rotary frame is arranged between the first fixing plate and the second fixing plate, a slewing mechanism is arranged between the first fixing plate and the rotary frame, and a slewing mechanism is arranged between the second fixing plate and the rotary frame.

7. A casing lifting device according to claim 3 wherein a first wear plate and a second wear plate are provided between the mount and the swivel mount, the first wear plate being relatively fixed to the mount, the second wear plate being relatively fixed to the swivel mount, the first wear plate being in sliding contact with the second wear plate.

8. A casing lifting device according to claim 3 wherein the clamping mechanism comprises:

the clamping blocks are arranged, each clamping block is distributed along the circumferential direction of the clamping space, the clamping blocks are connected with the rotating frame in a sliding manner, and the sliding direction of the clamping blocks is arranged along the radial direction of the clamping space;

the second driving parts are arranged to drive the clamping blocks to slide relative to the rotating frame, and each clamping block is correspondingly connected with one second driving part.

9. The casing lifter of claim 8 wherein the clamp block comprises:

the clamping part is provided with two clamping surfaces which are arranged at an angle;

the sliding part is arranged on one side, far away from the clamping space, of the clamping part, a sliding channel for the sliding part to slide back and forth is arranged on the rotating frame, a third wear-resisting plate is arranged on the outer side wall of the sliding part, a fourth wear-resisting plate is arranged on the side wall of the sliding channel, and the third wear-resisting plate is in sliding contact with the fourth wear-resisting plate.

10. A piling machine comprising a casing lifting device according to any one of claims 1 to 9.

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