Hydraulic pile driver

Abstract

The utility model relates to the field of engineering machinery, in particular to a hydraulic pile driver. Comprising a chassis, a supporting cylinder, a loading device, a luffing mechanism, a mast assembly, a hydraulic hammer and an automatic righting device, the chassis is connected with the loading device through a supporting cylinder, the luffing mechanism and the mast assembly are mounted on the loading device, and the hydraulic hammer can reciprocate up and down along a guide rail on the mast; the automatic righting device is opened and closed through stretching and retracting of the oil cylinder.

Description

Technical Field

[0001] The utility model relates to the field of construction machinery, and particularly relates to a hydraulic pile driver. Background Art

[0002] The description of the background art of the present utility model belongs to the related art related to the present utility model, and is only used to explain and facilitate the understanding of the content of the present utility model, and should not be construed as the applicant clearly believing or presuming that the applicant believes it is the prior art on the application date of the first application of the present utility model.

[0003] Hydraulic pile hammers are widely used in the installation of bridges, buildings, port terminals, offshore wind power, and the foundation pile drivers of offshore platforms and deep-water marine structures. The main structures of traditional hydraulic pile hammers include a hammer body, a pile frame, a hydraulic power station, an electrical control system unit, etc., which are pile driving machines that use impact force to drive precast piles into the formation.

[0004] Particularly, in offshore construction, traditional pile drivers need to build an offshore platform to meet the construction requirements, which not only increases costs but also lacks flexibility and mobility. Summary of the Utility Model

[0005] The purpose of the embodiments of the present utility model is to design a hydraulic pile hammer that can be easily transferred and can also drive piles on the basis of a traditional rotary drilling rig to meet the construction conditions.

[0006] A hydraulic pile driver includes: a chassis, a support cylinder, an upper vehicle device, a luffing mechanism, a mast assembly, a hydraulic hammer, and an automatic centering device; the chassis is connected to the upper vehicle device through the support cylinder, the luffing mechanism and the mast assembly are installed on the upper vehicle device, and the hydraulic hammer can reciprocate up and down along the guide rail on the mast; the automatic centering device opens and closes by the telescopic movement of the oil cylinder.

[0007] Further, the chassis is a crawler chassis.

[0008] Further, the upper vehicle device includes: a vehicle frame, a driver's cab, an engine system, a hydraulic and electrical system, a slewing system, a counterweight, and a hood covering.

[0009] Further, the hydraulic hammer and the guide rail are detachably connected.

[0010] Further, the luffing mechanism includes: a connecting body, a boom, a small boom, and a luffing oil cylinder; among them, the connecting body, the boom, the small boom and the vehicle frame form a parallelogram structure. Under the telescopic drive of the luffing oil cylinder, the connecting body moves horizontally, and the position of the mast assembly relative to the vehicle body can be adjusted, thereby adjusting the size of the front working radius.

[0011] By means of the above solution, the present utility model has at least the following beneficial effects:

[0012] The present invention provides a hydraulic pile driver, which can not only realize high-platform offshore operation, has an automatic alignment device, can realize the clamping and alignment of precast piles, but also realize the switching between the dual working conditions of the pile driver and the rotary drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below:

[0014] Figure 1 is a schematic diagram of the overall structure of a hydraulic pile driver of the present utility model;

[0015] Figure 2 is a schematic diagram of the structure of the upper vehicle device in a hydraulic pile driver of the present utility model;

[0016] Figure 3 is a schematic diagram of the structure of the luffing mechanism of a hydraulic pile driver of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further introduced in detail below in conjunction with the embodiments. It should be understood that the embodiments are for those skilled in the art to more easily understand the technical solutions of the present utility model and cannot be used as a limitation on the protection scope of the present utility model.

[0018] In the following description, the terms "first" and "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance. The following description provides multiple embodiments of the present utility model. Different embodiments can be replaced or combined. Therefore, the present utility model can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then the present utility model should also be considered to include embodiments containing all other possible combinations of A, B, C, and D, even though such embodiments may not be explicitly described in the following content.

[0019] A hydraulic pile driver includes: a chassis 1, a support cylinder 2, an upper vehicle device 3, a luffing mechanism 4, a mast assembly 5, a hydraulic hammer 6, and an automatic alignment device 7; the chassis 1 is connected to the upper vehicle device 3 through the support cylinder 2, the luffing mechanism 4 and the mast assembly 5 are installed on the upper vehicle device, and the hydraulic hammer 6 can reciprocate up and down along the guide rail on the mast; the automatic alignment device realizes opening and closing through the telescopic movement of the oil cylinder.

[0020] In some embodiments of the present utility model, the chassis 1 is a crawler chassis. The crawler chassis 1 is connected to the upper vehicle device 3 through the support cylinder 2, which can not only realize the rotation of the upper vehicle but also increase the height of the upper vehicle, thus being beneficial for its operation at sea.

[0021] In some embodiments of the present utility model, the automatic alignment device includes: the hydraulic hammer 6 can reciprocate up and down along the mast guide rail, and the alignment device 7 fixed on the mast can be opened and closed by the telescopic movement of the oil cylinder, so as to realize the clamping and alignment of the precast pile, effectively ensuring the quality of the pile hole. The automatic alignment device can be completed by any automatic alignment device. In the present utility model, the automatic alignment device designed by the inventor himself before is used. The applicant has previously applied for a patent for this alignment device and has obtained authorization. The application number is: 202122409662.2, and the authorization announcement number is: CN215925972U. Here, the applicant will not elaborate on the structure of the automatic alignment device anymore.

[0022] Combined with Figure 2 , in some embodiments of the present utility model, the upper vehicle device includes: a vehicle frame 24, a driver's cab 23, an engine system 27, a hydraulic and electrical system 25, a slewing system 26, a counterweight 21, and a hood covering 22.

[0023] In some embodiments of the present utility model, the hydraulic hammer and the guide rail are detachably connected.

[0024] Combined with Figure 3 , in some embodiments of the present utility model, the luffing mechanism 4 and the mast assembly 5 are installed on the upper vehicle device 2 to form the main structure of the pile driver. The luffing mechanism includes: a connecting body 33, a boom 32, a small boom 34, and a luffing oil cylinder 35; among them, the connecting body 33, the boom 32, the small boom 34 are connected to the vehicle frame 31. Among them, the lower end of the boom 32 is connected to the vehicle frame 31 through a pin shaft; at the upper end of the boom 32, the upper end of the luffing oil cylinder 35 is connected to the connecting body 33 through a pin shaft; at the lower end of the small boom 34, the lower end of the luffing oil cylinder 35 is connected to the vehicle frame 31 through a pin shaft; the upper end of the small boom 34 is connected to the connecting body 33 through a pin shaft; the front end of the connecting body 33 is connected to the lower part of the mast assembly 5 through a pin shaft. The vehicle frame 31, the boom 32, the small boom 34 and the connecting body 33 together form a parallelogram structure. Under the telescopic drive of the luffing oil cylinder 35, the connecting body moves horizontally, and the position of the mast assembly relative to the vehicle body can be adjusted, so as to adjust the size of the front working radius.

[0025] In addition, this hydraulic pile driver is modified on the basis of a rotary drilling rig. By removing the support cylinder 2 and the centering device 7 and directly connecting the chassis 1 and the upper carriage device 3, and replacing the hydraulic hammer 6 with a drill pipe, it is the typical structure of a rotary drilling rig, thus not affecting the realization of the rig function. This type of hydraulic pile hammer can, after simple assembly, realize the interchange of the rig function and the pile hammer function, achieving the use of one machine with dual working conditions.

[0026] The above introduction is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hydraulic pile driver, characterized in that: include: A chassis, a support tube, a vehicle-mounted device, a luffing mechanism, a mast assembly, a hydraulic hammer and an automatic righting device; the chassis and the vehicle-mounted device are connected via the support tube, the luffing mechanism and the mast assembly are mounted on the vehicle-mounted device, the hydraulic hammer can achieve up and down reciprocating motion along the guide rail on the mast; the automatic righting device is opened and closed by the extension and retraction of the oil cylinder.

2. The hydraulic pile driver according to claim 1, characterized in that: The chassis is a crawler chassis.

3. The hydraulic pile driver according to claim 1, characterized in that: The vehicle mounting device comprises: a vehicle frame, a driver's cab, an engine system, a hydraulic and electrical system, a slewing system, a counterweight, and a hood cover.

4. The hydraulic pile driver according to claim 1, characterized in that: The hydraulic hammer is detachably connected to the guide rail.

5. The hydraulic pile driver according to claim 1, characterized in that: The luffing mechanism comprises: a connector, a boom, a small boom and a luffing cylinder; wherein the connector, the boom, the small boom and the vehicle frame form a parallelogram structure, and under the telescopic drive of the luffing cylinder, the connector moves in translation, which can adjust the position of the mast assembly from the vehicle body, thereby adjusting the size of the front working radius.

Images