A crane head for a pile driver

Abstract

The utility model relates to pile machine technical field, propose a kind of hoist head for pile machine for solving the problem of mutual abrasion of steel wire, including base, support, pulley block set in the cantilever end of support, the partition plate that the cantilever is separated into several wire channels is provided on the cantilever, the fixed end of the cantilever is provided with mounting shaft in the middle part of support, the mounting shaft is fixedly arranged in the middle part of support along the direction of vertical cantilever both ends, the channel mouth of the wire channel is rotatably provided with guide wheel on the mounting shaft, the threading groove for threading steel wire is opened in parallel on the inside of the mounting shaft in the middle part of support, the spacing between the plane along and the tangent plane of the outer diameter of guide wheel is less than the diameter of steel wire.

Description

Technical Field

[0001] This utility model relates to the field of pile driver technology, and in particular to a hoisting head for pile drivers. Background Technology

[0002] Figure 1 The existing cross-shaped lifting head mainly includes a base 1, a cross-shaped support 2, four sets of pulley blocks 3, and two sets of straight guide wheel blocks 4. Each end of a straight guide wheel block has a guide wheel, with each guide wheel corresponding to one opposite side of the cross-shaped support. The cross-shaped support is fixed to the base, and the pulley blocks are located at the four free ends of the cross-shaped support. The two sets of straight guide wheel blocks are located in the middle of the cross-shaped support and are perpendicular to each other. Steel wire passes sequentially through the base, the middle of the cross-shaped support, and the middle of the straight guide wheel blocks before winding around the guide wheels and pulley blocks. In the existing cross-shaped lifting head, the perpendicular guidance of the two sets of straight guide wheel blocks creates interference, causing mutual wear of the steel wires on adjacent pulley blocks, affecting the use of the lifting head.

[0003] This case arose in order to resolve the aforementioned issues. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes a hoisting head for pile drivers to solve the problem of mutual wear between steel wires.

[0005] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows: a hoisting head for a pile driver, including a base, a bracket, and a pulley group set at the end of the cantilever of the bracket, characterized in that: a partition plate is provided on the cantilever to divide the cantilever into several conductor channels; an installation shaft is provided in the middle of the bracket at the fixed end of the cantilever; the two ends of the installation shaft are fixedly set in the middle of the bracket along the direction perpendicular to the cantilever; a guide wheel is rotatably provided on the installation shaft at the channel opening of the conductor channel; a wire-passing groove for passing steel wire is opened parallel to the inner side of the installation shaft in the middle of the bracket; the distance between the plane of the inner edge of the wire-passing groove and the plane of the outer diameter tangent of the guide wheel is less than the diameter of the steel wire.

[0006] A further improvement is that: mounting lugs are fixedly provided on both ends of the mounting shaft on the bracket, and the mounting lugs are provided with U-shaped mounting grooves from top to bottom. The mounting shaft is movably disposed in the U-shaped mounting grooves. Both ends of the mounting shaft are threaded sections, and nuts are screwed onto the threaded sections at both ends. The nuts at both ends are tightened against the outer surface of the mounting lugs.

[0007] Further improvements include: the number of conductor channels is three; the pulley group includes a pulley shaft and six pulleys, the two ends of the pulley shaft are fixed to the cantilever, the end of the partition plate has an opening for the pulley shaft to pass through, and the pulleys are fixedly sleeved on the pulley shaft in pairs within the guide channel.

[0008] A further improvement is that an arc-shaped cover plate is fixedly installed at the end of the cantilever to cover the outside of the pulley and prevent the steel wire on the pulley from detaching.

[0009] By adopting the aforementioned technical solution, the beneficial effects of this utility model are: The existing cross-shaped lifting head has two sets of vertical guide wheels that interfere with each other, making it difficult to adjust the installation position of the guide wheels. This means that the steel wire can only be wound around the pulley on one side of the pulley block. When the pulley on that side is damaged, it cannot be replaced by pulleys in other positions, and the intersecting steel wires wear each other, which seriously affects the use of the lifting head.

[0010] In this case, guide wheels are mounted on mounting shafts, which are then installed on the fixed ends of each cantilever. The steel wires wound on different cantilever arms are separated to prevent wear. The mounting shaft has sufficient clearance at both ends for adjustment. The number of guide wheels on the mounting shaft corresponds to the number of wire channels on the cantilever. When a guide wheel is damaged, an adjacent guide wheel can be immediately replaced. Furthermore, the position of the corresponding guide wheel and wire channel can be adjusted by adjusting the position of the mounting shaft. For example, when the steel wire is looped onto the middle guide wheel, the middle guide wheel is aligned with the center of the middle wire channel; when the steel wire is wound onto a guide wheel on one side, the position of that guide wheel is adjusted by adjusting the position of the mounting shaft to align it with the center of the corresponding guide channel.

[0011] The steel wire is wound around the guide wheel via a threading groove, which is a strip-shaped groove parallel to the mounting shaft. This effectively restricts the position of the steel wire, preventing it from detaching from the guide wheel and ensuring that the steel wire always moves within a preset trajectory. This completely solves the problem of mutual wear between steel wires, significantly extends the service life of the steel wire, and reduces the cost and downtime caused by steel wire replacement due to wear. During operation, the steel wire is tautly wound around the guide wheel and, under the dual constraint of the guide wheel and the edge of the threading groove, will not actively detach from the guide wheel.

[0012] A further beneficial effect is that the mounting shaft is fixedly mounted on the mounting lug via a U-shaped mounting groove, and can be moved after loosening the nuts at both ends of the mounting shaft. When it is necessary to replace the guide wheel with the wire winding, the wire is loosened, the mounting shaft is released, the wire is wound onto the spare guide wheel, and then the mounting shaft is reinstalled onto the mounting lug. The strip-shaped wire-passing groove facilitates the lateral movement of the wire without the need to rewind the wire, thus improving replacement efficiency. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the prior art in the background art of this utility model.

[0014] Figure 2 This is a top view schematic diagram of a hoisting head for a pile driver according to an embodiment of the present invention.

[0015] Figure 3 yes Figure 2 Enlarged view of the local structure at point A in the middle. Detailed Implementation

[0016] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0017] refer to Figure 2 , 3 The present invention discloses a hoisting head for a pile driver, comprising a base 10, a support 11, and a pulley block 13 disposed at the end of a cantilever 12 of the support 11. The cantilever 12 is provided with a partition plate 14 that divides the cantilever 12 into several conductor channels 23. An installation shaft 15 is disposed in the middle of the support 11 at the fixed end of the cantilever 12. The two ends of the installation shaft 15 are fixedly disposed in the middle of the support 11 along the direction perpendicular to the cantilever 12. A guide wheel 16 is rotatably disposed on the installation shaft 15 at the channel opening of the conductor channel 23 by means of a bearing. A wire-passing groove 17 is provided parallel to the inner side of the installation shaft 15 in the middle of the support 11 for passing through a steel wire. The distance between the plane of the inner edge of the wire-passing groove 17 and the plane of the outer diameter tangent of the guide wheel 16 is less than the diameter of the steel wire, which helps to prevent the steel wire from detaching from the guide wheel 16.

[0018] Mounting lugs 18 are welded and fixed to both ends of the mounting shaft 15 on the bracket 11. Each mounting lug 18 has a U-shaped mounting groove 19 extending downwards. The mounting shaft 15 is movably disposed within the U-shaped mounting groove 19. Both ends of the mounting shaft 15 are threaded sections 20, and nuts 21 are screwed onto each threaded section 20. The nuts 21 at both ends abut against the outer surface of the mounting lugs 18. The mounting position of the mounting shaft 15 on the mounting lugs 18 is adjusted using the nuts 21 so that the guide wheel 16 is located at the end of the guide channel, reducing the precision requirements for the assembly of the guide wheel 16. After adjusting the position, the nuts 21 are tightened so that the nuts 21 at both ends are close together and abut against the mounting lugs 18, thus fixing the mounting shaft 15.

[0019] The number of conductor channels 23 is three; the pulley group 13 includes a pulley shaft 131 and six pulleys 132. The two ends of the pulley shaft 131 are fixed to the cantilever 12. The end of the partition plate 14 has an opening for the pulley shaft 131 to pass through. The pulleys 132 are arranged in pairs and fixedly sleeved on the pulley shaft 131 within the guide channel. An arc-shaped cover plate 22 is welded and fixed to the end of the cantilever 12 to cover the outside of the pulleys and prevent the steel wire on the pulleys from detaching. The two ends of the arc-shaped cover plate 22 are welded and fixed to the cantilever 12.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A hoisting head for a piling machine, comprising a base, a support, and a pulley block disposed at the cantilever end of the support, characterized in that: The cantilever is provided with a partition plate that divides the cantilever into several wire channels. The bracket is provided with a mounting shaft at the fixed end of the cantilever in the middle. The mounting shaft is fixed at both ends in the middle of the bracket along the direction perpendicular to the cantilever. A guide wheel is rotatably provided on the mounting shaft at the channel opening of the wire channel. A wire-passing groove for passing steel wire is opened parallel to the inner side of the mounting shaft in the middle of the bracket. The distance between the plane of the inner edge of the wire-passing groove and the plane of the outer diameter tangent of the guide wheel is less than the diameter of the steel wire.

2. The hoisting head for a pile driver according to claim 1, characterized in that: Mounting lugs are fixedly provided on both ends of the mounting shaft on the bracket. The mounting lugs have U-shaped mounting grooves from top to bottom. The mounting shaft is movably disposed in the U-shaped mounting grooves. Both ends of the mounting shaft are threaded sections, and nuts are screwed onto the threaded sections at both ends. The nuts at both ends are tightened against the outer surface of the mounting lugs.

3. A hoisting head for a piling machine according to claim 1, characterized in that: The number of conductor channels is three; the pulley group includes a pulley shaft and six pulleys, the two ends of the pulley shaft are fixed to the cantilever, the end of the partition plate has an opening for the pulley shaft to pass through, and the pulleys are fixedly sleeved on the pulley shaft in pairs in the guide channel.

4. A hoisting head for a piling machine according to claim 3, characterized in that: An arc-shaped cover plate is fixedly installed at the end of the cantilever to cover the outside of the pulley to prevent the steel wire on the pulley from detaching.

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