Lower guide door device for gravel pile ship

Abstract

The utility model discloses a lower guide door device for a gravel pile ship. The lower guide door device comprises a cylinder body arranged between the lower end of a feed hopper and the upper end of a pile pipe. A horizontal door frame, an inclined door frame, an air-tight door and an air-tight door opening and closing mechanism are arranged in the cylinder body; the horizontal door frame is fixed to the upper portion of the inner surface of the barrel. The inclined door frame is fixed between the bottom surface of the horizontal door frame and the inner surface of the cylinder body; a sealing ring is arranged on the bottom surface of the inclined door frame; the airtight door is mounted on the barrel body through a hinge mechanism and is positioned at the bottom of the inclined door frame; the air-tight door opening and closing mechanism comprises a hydraulic oil cylinder installed on the outer surface of the barrel, an outer guide pulley installed on the upper portion of the outer surface of the barrel and an inner guide pulley installed on the top face of the horizontal door frame. The lug plate is fixed on the top surface of the airtight door; and the steel wire rope is connected between the lug plate and the end of a piston rod of the hydraulic oil cylinder and bypasses the inner guide pulley and the outer guide pulley. The air pressure in the pile pipe can be controlled in the charging process, and the air tightness in the pile pipe is ensured.

Description

Technical Field

[0001] The utility model relates to a lower guide door device for a gravel pile ship. Background Art

[0002] Gravel piles are composite foundation reinforcement piles made of crushed stone (pebbles) as the main material. Sandstone piles and gravel piles are collectively referred to as loose piles or coarse granular soil piles abroad. The so-called loose piles refer to piles without bonding strength. The composite foundation composed of loose piles such as sandstone columns or gravel piles and soil between piles can also be called loose pile composite foundation. The composite foundations such as sandstone piles, gravel piles, and slag piles widely used at home and abroad are all loose pile composite foundations.

[0003] During the piling process of gravel piles, compressed air needs to be added to the pile casing to increase the air pressure in the pile casing, thereby cooperating with the operation of the pile casing. The existing compacted gravel pile ship uses a single guide gate system. Before adding sand into the pile casing, the compressed air in the pile casing must be completely discharged before the guide gate can be opened. At this time, the sand in the lifting bucket can be put into the pile casing through the single guide gate system. Taking the single sand addition as an example, the compressed air in the pile casing is first discharged. When the air pressure inside and outside the pile casing is balanced, the guide gate is opened, and then sand is put into the pile casing. After the sand is put in, the guide gate is closed, and the required compressed air is injected into the pile casing. In this process, adding and releasing air requires compressing or releasing all the air in the internal space of the pile casing, which consumes a lot of time and compressed air, resulting in reduced work efficiency and waste of energy. In addition, the loss of pressure may cause the soil outside the pile casing to enter the pile casing, affecting the quality of the compacted gravel pile. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide a lower guide door device for a gravel pile ship, which can control the air pressure in the pile pipe during the material feeding process to ensure the air tightness in the pile pipe.

[0005] The purpose of the utility model is achieved as follows: a lower guide door device for a gravel pile ship, comprising a cylinder installed between the lower end of a feed hopper and the upper end of a pile pipe; wherein,

[0006] The cylinder is provided with a horizontal door frame, an inclined door frame, an airtight door and an airtight door opening and closing mechanism;

[0007] The horizontal door frame is fixed to the upper inner surface of the cylinder;

[0008] The inclined door frame is fixed between the bottom surface of the horizontal door frame and the inner surface of the cylinder in a manner of being inclined at 135° to the horizontal direction, and a sealing ring is provided on the bottom surface of the inclined door frame;

[0009] The outer contour of the airtight door is adapted to the inner cavity of the inclined door frame, and the airtight door is installed on the cylinder through a hinge mechanism and is located at the bottom of the inclined door frame;

[0010] The airtight door opening and closing mechanism includes a hydraulic cylinder installed on the outer surface of the cylinder, an outer guide pulley installed on the upper part of the outer surface of the cylinder, an inner guide pulley installed on the top surface of the horizontal door frame, an ear plate fixed on the top surface of the airtight door, and a steel wire rope connected between the ear plate and the end of the piston rod of the hydraulic cylinder and passing around the inner guide pulley and the outer guide pulley; the airtight door is opened and closed by controlling the extension and retraction of the piston rod of the hydraulic cylinder.

[0011] The above-mentioned lower guide door device for gravel pile ships, wherein an upper flange and a lower flange are fixed one-to-one at the upper end and the lower end of the cylinder, and a plurality of ribs are evenly fixed along the circumference on the outer surface of the cylinder; a first sand retaining plate that is adapted to the inclination angle of the inclined door frame and is in the same plane as the inclined door frame is connected between the upper flange and the top surface of the horizontal door frame; a second sand retaining plate is also horizontally fixed on the upper inner surface of the cylinder above the inner guide pulley.

[0012] In the above-mentioned lower guide door device for gravel pile ship, an airtight door limiting pile is also horizontally fixed in the middle of the inner surface of the cylinder.

[0013] The above-mentioned lower guide door device for gravel pile ships, wherein the lower guide door device also includes a radar probe box and an airtight door inspection port; the radar probe box is installed in the lower opening of the cylinder, and a radar detection hole is opened on the bottom plate of the radar probe box coaxially with the cylinder; the airtight door inspection port is opened on the upper part of the cylinder and faces the inclined door frame.

[0014] The lower guide door device for a gravel pile ship of the utility model is characterized by:

[0015] 1. By setting up an airtight door, the internal pressure of the pile pipe remains unchanged during the feeding process, omitting the process of discharging and re-adding the compressed air in the pile pipe, which not only saves the amount of compressed air, but also improves the construction efficiency. The speed of adding crushed stone can be controlled by adjusting the opening angle of the airtight door;

[0016] 2. By setting up a radar probe box, the gravel level and feeding speed in the pile pipe can be fed back in real time through the radar rangefinder, so as to effectively adjust the pipe pulling rate and better ensure the quality of the gravel pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an axial cross-sectional view of the lower guide door device for a gravel pile ship of the utility model (the airtight door is closed);

[0018] Figure 2 yes Figure 1 A-direction view in the figure;

[0019] Figure 3 It is an axial cross-sectional view of the lower guide door device for a gravel pile ship of the utility model (with the airtight door opened). DETAILED DESCRIPTION

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] See also Figures 1 to 3 The utility model of the lower guide door device for gravel pile ship comprises a cylinder 1 installed at the upper end of the pile pipe; a horizontal door frame 2, an inclined door frame 3, an airtight door 4, an airtight door opening and closing mechanism and a radar probe box 6 are arranged in the cylinder 1.

[0022] An upper flange 11 and a lower flange 12 are fixed to the upper and lower ends of the cylinder 1 in correspondence, and a plurality of ribs 13 are evenly fixed along the circumference on the outer surface of the cylinder 1 to strengthen the strength of the cylinder 1 and prevent stress deformation of the lower guide door device.

[0023] The horizontal door frame 2 is fixed to the upper inner surface of the cylinder 1 .

[0024] The inclined door frame 3 is fixed between the bottom surface of the horizontal door frame 2 and the inner surface of the cylinder body 1 at an angle of 135 degrees to the horizontal direction. A sealing ring 30 is provided on the bottom surface of the inclined door frame 3 through a sealing groove.

[0025] The outer contour of the airtight door 4 is adapted to the inner cavity of the inclined door frame 3. The airtight door 4 is installed on the cylinder 1 through a hinge mechanism 4A and is located at the bottom of the inclined door frame 3. The hinge mechanism 4A includes a middle hinge seat 41 fixed on the side wall of the cylinder 1, two side hinge seats 42 fixed on the airtight door 4 and located at both ends of the middle hinge seat 41 in a one-to-one correspondence, two shaft sleeves 43 coaxially inserted on the side wall of the cylinder 1, and a shaft inserted in two bearing sleeves 43, two bearings 44 installed in the two bearing sleeves 43 in a one-to-one correspondence, and a hinge shaft 45 inserted in the two bearings 44, the shaft holes of the two side hinge seats 42 and the shaft hole of the middle hinge seat 41, and an end cover 46 is fixed to each of the outer ends of the two bearing sleeves 43.

[0026] The airtight door opening and closing mechanism includes a hydraulic cylinder 50, an outer guide pulley 51, an inner guide pulley 52, an ear plate 53 and a steel wire rope 54; wherein, the hydraulic cylinder 50 is installed on the outer surface of the cylinder 1; the outer guide pulley 51 is installed on the upper outer surface of the cylinder 1; the inner guide pulley 52 is installed on the top surface of the horizontal door frame 2 at the same height as the outer guide pulley 51; the ear plate 53 is fixed on the top surface of the airtight door 4; the steel wire rope 54 is connected between the ear plate 53 and the end of the piston rod of the hydraulic cylinder 50 and bypasses the inner guide pulley 52 and the outer guide pulley 51; the airtight door 4 is opened and closed by controlling the extension and retraction of the piston rod of the hydraulic cylinder 50.

[0027] A first sand retaining plate 14 is connected between the upper flange 11 and the top surface of the horizontal door frame 2, which is adapted to the inclination angle of the inclined door frame 3 and is in the same plane as the inclined door frame 3; a second sand retaining plate 15 is also horizontally fixed above the inner guide pulley 52 on the upper inner surface of the cylinder 1.

[0028] An airtight door limit pile 40 is also fixed horizontally in the middle of the inner surface of the cylinder 1 in the travel trajectory of the airtight door 4 to prevent the airtight door 4 from opening excessively. Accordingly, an anti-collision block 4B is installed on the bottom surface of the airtight door 4. When the airtight door 4 is opened to the point where the anti-collision block 4B contacts the limit pile 40, the piston rod of the hydraulic cylinder 50 stops extending, causing the airtight door 4 to stop opening.

[0029] An airtight door inspection opening is also provided on the upper part of the cylinder body 1, on which an inspection door 16 is installed. If the airtight door 4 fails, it can be repaired through the airtight door inspection opening.

[0030] The radar probe box 6 is installed in the lower opening of the cylinder 1, and a radar mounting seat 60 is provided in the radar probe box 6. A radar detection hole 60 is provided on the bottom plate of the radar probe box 6 coaxially with the cylinder 1. The radar mounting seat 60 is used to install a radar rangefinder, which can reflect the height position of the crushed stone in the pile pipe in real time.

[0031] The utility model is used for the lower guide door device of the crushed stone pile ship. The upper guide door (not shown in the figure) is installed on the upper flange 11 of the cylinder 1; the lower flange 12 of the cylinder 1 is connected to the pile pipe (not shown in the figure); the first sand retaining plate 14 and the second sand retaining plate 15 enable the crushed stone to flow into the pile pipe below through the horizontal door frame 2 and the inclined door frame 3 better, and the second sand retaining plate 15 can also protect the inner guide pulley 52. ​​The airtight door 4 is opened and closed by the airtight door opening and closing mechanism to achieve the effect of ensuring the airtightness in the pile pipe.

[0032] Before adding crushed stone, close the upper guide door first, and close the airtight door 4 through the airtight door opening and closing mechanism, then discharge the compressed air in the upper inner cavity above the airtight door 4 of the cylinder 1, then open the upper guide door, put the crushed stone into the upper inner cavity of the cylinder 1, and then close the upper guide door, and add compressed air to the upper inner cavity of the cylinder 1. In this process, the airtight door 4 is made to be close to the inclined door frame 3 through the airtight door opening and closing mechanism, and the airtight performance of the upper inner cavity of the cylinder 1 can be ensured by the sealing ring 30; when the pressure in the upper inner cavity of the cylinder 1 is balanced with the internal pressure of the pile pipe, open the airtight door 4 to allow the crushed stone to enter the pile pipe, and complete one sand adding (see Figure 3 ), during this process, the internal pressure of the pile pipe remains unchanged, ensuring the quality of the gravel pile, omitting the process of discharging and refilling the compressed air in the pile pipe, and only the compressed air in the upper inner cavity of the cylinder 1 needs to be discharged and refilled. Since the space in the upper inner cavity of the cylinder 1 is much smaller than the internal space of the pile pipe, the amount of compressed air is saved and the construction efficiency is improved.

[0033] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Technicians in the relevant technical field can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A lower guide gate device for a gravel pile ship, comprising a cylinder installed between the lower end of a feed hopper and the upper end of a pile pipe; characterized in that: The cylinder is provided with a horizontal door frame, an inclined door frame, an airtight door and an airtight door opening and closing mechanism; The horizontal door frame is fixed to the upper inner surface of the cylinder; The inclined door frame is fixed between the bottom surface of the horizontal door frame and the inner surface of the cylinder in a manner of being inclined at 135° to the horizontal direction, and a sealing ring is provided on the bottom surface of the inclined door frame; The outer contour of the airtight door is adapted to the inner cavity of the inclined door frame, and the airtight door is installed on the cylinder through a hinge mechanism and is located at the bottom of the inclined door frame; The airtight door opening and closing mechanism comprises a hydraulic cylinder mounted on the outer surface of the cylinder, an outer guide pulley mounted on the upper portion of the outer surface of the cylinder, an inner guide pulley mounted on the top surface of the horizontal door frame, an ear plate fixed on the top surface of the airtight door, and a steel wire rope connected between the ear plate and the end of the piston rod of the hydraulic cylinder and passing around the inner guide pulley and the outer guide pulley; The airtight door is opened and closed by controlling the extension and retraction of the piston rod of the hydraulic cylinder.

2. The lower guide door device for a gravel pile ship according to claim 1, characterized in that: An upper flange and a lower flange are fixed to the upper and lower ends of the cylinder in a one-to-one correspondence, and a number of ribs are evenly fixed along the circumference on the outer surface of the cylinder; a first sand retaining plate that is adapted to the inclination angle of the inclined door frame and is in the same plane as the inclined door frame is connected between the upper flange and the top surface of the horizontal door frame; a second sand retaining plate is also horizontally fixed to the upper part of the inner surface of the cylinder above the inner guide pulley.

3. The lower guide door device for a gravel pile ship according to claim 1, characterized in that: An airtight door limiting pile is also horizontally fixed to the middle of the inner surface of the cylinder.

4. The lower guide door device for a gravel pile ship according to any one of claims 1 to 3, characterized in that: The lower guide door device also includes a radar probe box and an airtight door inspection port; the radar probe box is installed in the lower opening of the cylinder, and a radar detection hole is opened on the bottom plate of the radar probe box coaxially with the cylinder; the airtight door inspection port is opened at the upper part of the cylinder and faces the inclined door frame.

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