Top winch of a pile driving machine

Abstract

A top winch of a pile-driving machine comprises a slewing table, a winch body, a pulley, and a sling lock. The winch body is installed on the top of the pile driver's secondary mast through the slewing table, the pulley is arranged at the front end of the winch body, and the wire rope on the winch body passes around the pulley to connect the sling lock. The beneficial effect of the present invention is that the top winch of a pile-driving machine can realize the automatic positioning of the mast swing of the crawler pile driver, ensure the construction accuracy and stability, reduce the labor intensity of the workers, improve the construction efficiency, and make the pile driver suitable for more working conditions.

Description

Technical Field

[0001] The invention relates to a pile driver, in particular to a top winch of a pile driving machine. Background Art

[0002] At present, the engineering machinery equipment used for piling operations mainly include hydraulic pile drivers, hydraulic vibrating hammers, hydraulic impact hammers, walking pile drivers, and crawler pile drivers. Among them, the crawler pile driver is a kind of engineering machinery that uses its own vibrating hammer or impact hammer to drive steel sheet piles into the ground. It is mainly composed of mechanical structure, power system, electro-hydraulic control system, working machine, etc., among which the mechanical structure includes luffing mechanism, tilting mechanism, swing mechanism, telescopic mast mechanism, winch mechanism, etc. The principle of its piling construction is to drive the steel piles into the ground through the weight of the pile driver itself and the vibration or hammering of the working machine. The principle of its pile pulling construction is to support the ground through the reaction seat at the bottom of the mast, and the oil cylinder of the secondary mast pushes the secondary mast upward, and drives the working machine upward through the pulley, so as to apply the pulling force to the pile. This machine has the advantages of high integration, small size, and high efficiency. It can not only realize the vibration pile sinking, impact piling, and static pressure pile planting of various steel piles, but also realize pre-drilling, continuous wall, deep mixing and other operations.

[0003] Construction work will put forward many requirements for crawler pile drivers, such as moving one or several piles, disassembling and installing its own counterweight, replacing the working machine, etc. The pile driver needs to be equipped with its own winch. The existing construction schemes are mostly implemented by using truck cranes or crawler cranes, which increases construction costs and reduces work efficiency. In some relatively narrow construction environments, it also brings safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a top winch of a pile driving machine, which can realize the rotation positioning of the top winch, reduce the time of auxiliary work, reduce the labor intensity of workers, improve the construction efficiency, and at the same time make the pile driver suitable for more working conditions.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A top winch of a pile driving machine comprises a slewing table, a winch body, a pulley, and a sling lock. The winch body is installed on the top of the pile driver's secondary mast through the slewing table. The pulley is arranged at the front end of the winch body. The winch body is provided with a hydraulic winch. The steel wire rope on the hydraulic winch passes around the pulley and is connected to the sling lock.

[0007] The turntable includes a slewing support, a hydraulic swing cylinder, a swing cylinder adapter plate, a winch adapter plate, and a torsion seat. The hydraulic swing cylinder is arranged at the bottom center of the winch body and is fixedly connected to the base of the winch body through the swing cylinder adapter plate. The winch adapter plate is fixedly connected to the secondary mast. The torsion seat is arranged at the center of the winch adapter plate and is fixedly connected to the winch adapter plate. A slewing support is arranged between the winch adapter plate and the base of the winch body. The output shaft of the hydraulic swing cylinder extends into the torsion seat and is fixedly connected to the torsion seat.

[0008] It also includes a pulley swing shaft and a pulley swing sleeve. The pulley swing shaft is fixed to the front of the winch. The pulley swing sleeve is sleeved on the pulley swing shaft and is slidably connected to the pulley swing shaft. The pulley frame is fixedly connected to the pulley swing sleeve.

[0009] It also includes a wire rope guide frame and a wire rope sleeve, wherein the wire rope sleeve is fixed to the bottom of the wire rope guide frame, the upper end of the wire rope guide frame is installed on the pulley shaft and can rotate around the pulley shaft, and the wire rope passes around the pulley and is connected to the wire rope sleeve.

[0010] The rear side of the hoisting body is connected with a pipe collector assembly through a cantilever rod.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1) The hydraulic swing cylinder is used as the driving device for the rotary motion, and has an automatic locking function when the motion stops. The top winch can be automatically positioned within the swing range, eliminating the need to install a brake. This simplifies the winch structure and reduces costs.

[0013] 2) The wire rope guide frame can swing around the pulley shaft, so that the impact force when lifting heavy objects cannot be directly loaded on the winch body, which increases the service life of the winch, reduces the failure rate, and improves stability. The pile driver is suitable for more working conditions and has greater construction flexibility.

[0014] 3) The rotation of the winch and the backward tilt of the mast can realize the installation and removal of the pile driver's own counterweight, eliminating the cost and waiting time of using a separate crane, reducing the labor intensity of workers, reducing the time of auxiliary work, and improving the efficiency of pile driving operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the present invention.

[0016] Figure 2 It is the front view of the present invention.

[0017] Figure 3 It is a schematic diagram of the rotary mechanism in the present invention.

[0018] Figure 4 It is a cross-sectional view of the pulley and pulley shaft structure.

[0019] Figure 5 It is a schematic diagram of the installation of the present invention on a pile driver.

[0020] In the figure: 1. winch body, 2. winch front, 3. winch adapter plate, 4. slewing support, 5. pulley frame, 6. pulley, 7. pulley sleeve, 8. wire rope guide frame, 9. connecting shaft, 10. pulley swing shaft, 11. pulley shaft, 12. pulley swing sleeve, 13. wire rope sleeve, 14. torsion seat, 15. hydraulic winch, 16. hydraulic winch roller, 17. hydraulic swing cylinder, 18. swing cylinder adapter plate, 19. header assembly, 20. cantilever rod, 21. sling lock, 22. pile driver sub-mast. DETAILED DESCRIPTION

[0021] The present invention is described in detail below, but the implementation scope of the present invention is not limited to the following embodiments.

[0022] like Figure 1-Figure 5 As shown, a top winch of a pile driving machine includes a slewing table, a winch body 1, a pulley 6, and a sling lock 21. The winch body 1 is installed on the top of the pile driver's secondary mast 22 through the slewing table. The pulley 6 is arranged at the front end of the winch body 1. The winch body 1 is provided with a hydraulic winch 15. The steel wire rope on the hydraulic winch 15 passes through the pulley 6 and connects to the sling lock 21. The hydraulic winch 15 rotates to retract and release the steel wire rope.

[0023] The turntable includes a slewing support 4, a hydraulic swing cylinder 17, a swing cylinder adapter plate 18, a winch adapter plate 3, and a torsion seat 14. The hydraulic swing cylinder 17 is arranged at the bottom center of the winch body 1 and is fixedly connected to the base of the winch body 1 through the swing cylinder adapter plate 18. The swing cylinder adapter plate 18 is connected to the base of the winch body 1 by bolts. The winch adapter plate 3 is fixedly connected to the secondary mast by bolts. The torsion seat 14 is arranged at the center of the winch adapter plate 3 and is fixedly connected to the winch adapter plate 3 by bolts. The winch adapter plate 3 is fixedly connected to the inner ring of the slewing support 4 by bolts. The base of the winch body 1 is fixedly connected to the outer ring of the slewing support 4 by bolts. The output shaft of the hydraulic swing cylinder 17 extends into the torsion seat 14 and is fixedly connected to the torsion seat 14.

[0024] The output shaft of the hydraulic swing cylinder 17 is in the form of a flat key, which is inserted into the torsion seat 14 to provide a rotation torque for the entire winch, so that the winch can rotate 90 degrees to the left and right relative to the mast. This structure is simple, has a strong load-bearing capacity, is simple and convenient to assemble, and improves the efficiency of assembly and maintenance.

[0025] By replacing different winch adapter plates 3, the top winch can be adapted to different pile driver models, thereby making the application range of the winch wider.

[0026] The slewing support 4 provides axial and radial positioning for the entire winch and bears the tipping moment during lifting.

[0027] It also includes a pulley swing shaft 10 and a pulley swing shaft sleeve 12. The pulley swing shaft 10 is fixed to the front part 2 of the winch. The pulley swing shaft sleeve 12 is sleeved on the pulley swing shaft 10 and is slidably connected to the pulley swing shaft 10. The pulley frame 5 is fixedly connected to the pulley swing shaft sleeve 12.

[0028] It also includes a wire rope guide frame 8 and a wire rope sleeve 13. The wire rope sleeve 13 is fixed to the bottom of the wire rope guide frame 8. The upper end of the wire rope guide frame 8 is installed on the pulley shaft 11 and can rotate around the pulley shaft 11. The wire rope passes around the pulley 6 and is connected to the wire rope sleeve 13 to play a wear-resistant role.

[0029] The rear side of the hoisting body 1 is connected to a pipe collector assembly 19 through a cantilever rod 20. The pipe collector assembly 19 is used to organize and bundle electrical lines and pipelines such as oil pipes.

[0030] The hoisting body 1 is connected to the hoisting front part 2 through the connecting shaft 9 and fixed with screws. The wire rope guide frame 8 and the pulley 6 are connected to the pulley frame 5 through the pulley shaft 11. The wire rope guide frame 8 can swing around the pulley shaft 11. The hydraulic winch 15 is connected to the hoisting body 1 through bolts. The hydraulic winch pressure roller 16 is connected to the hoisting body 1 through bolts to press the wire rope so that the wire rope is arranged in order. The sling lock 21 includes a rotating safety hook, a wedge joint, an anti-collision spring, etc. The wire rope passes through the wire rope sleeve 13 and the wire rope guide frame 8, bypasses the pulley 6, and is wound on the drum of the hydraulic winch 15. The hydraulic winch 15 provides lifting force.

[0031] The relative sliding part between the winch front part 2 and the pulley frame 5 is provided with a pulley swing sleeve 12, which can withstand radial force and axial force. There are two pulley sleeves 7 relatively installed between the pulley 6 and the pulley shaft 11, which can withstand radial force and axial force.

[0032] The hydraulic swing cylinder 17 has the ability to maintain the position after the rotation stops, so the angle can be kept unchanged without installing a brake.

[0033] The hoisting hydraulic winch 15 has a lifting capacity of 5t. A brake is installed at the input end of the winch reducer. The brake is opened when rising and falling, and closed when stopping to prevent the heavy object from falling.

[0034] The whole machine adopts a grease lubrication centralized lubrication system, and the lubricating oil circuits lead to the pulley sleeve 7, the pulley swing sleeve 12, and the hydraulic winch 15 respectively, which can provide sufficient lubrication when the equipment is working.

Claims

1. A top winch of a pile-driving machine, characterized in that: It includes a slewing table, a hoisting body, a pulley, and a sling lock. The hoisting body is installed on the top of the pile driver's secondary mast through the slewing table. The pulley is arranged at the front end of the hoisting body. The hoisting body is provided with a hydraulic winch. The steel wire rope on the hydraulic winch passes through the pulley and connects to the sling lock. The slewing platform includes a slewing support, a hydraulic swing cylinder, a swing cylinder adapter plate, a winch adapter plate, and a torsion seat. The hydraulic swing cylinder is arranged at the bottom center of the winch body and is fixedly connected to the base of the winch body through the swing cylinder adapter plate. The winch adapter plate is fixedly connected to the secondary mast. The torsion seat is arranged at the center of the winch adapter plate and is fixedly connected to the winch adapter plate. A slewing support is arranged between the winch adapter plate and the base of the winch body. The output shaft of the hydraulic swing cylinder extends into the torsion seat and is fixedly connected to the torsion seat. It also includes a pulley swing shaft and a pulley swing sleeve. The pulley swing shaft is fixed to the front of the winch. The pulley swing sleeve is sleeved on the pulley swing shaft and is slidably connected to the pulley swing shaft. The pulley frame is fixedly connected to the pulley swing sleeve.

2. The top winch of a pile driving machine according to claim 1, characterized in that: It also includes a wire rope guide frame and a wire rope sleeve, wherein the wire rope sleeve is fixed to the bottom of the wire rope guide frame, the upper end of the wire rope guide frame is installed on the pulley shaft and can rotate around the pulley shaft, and the wire rope passes around the pulley and is connected to the wire rope sleeve.

3. The top winch of a pile driving machine according to claim 1, characterized in that: The rear side of the hoisting body is connected with a pipe collector assembly through a cantilever rod.

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