Novel automatic loading and unloading box for deep foundation pit stonework

Abstract

The utility model discloses a novel automatic loading and unloading box for deep foundation pit stonework, which relates to the technical field of earthwork excavation and comprises a side coaming, an upper cover plate, a lower cover plate and a lower cover plate. The two oppositely-opened bottom plates are hinged to the lower sides of the side surrounding plates; the first steel wire ropes are connected to the corners of the upper ends of the side coamings; the second steel wire ropes are connected to the end, away from the hinged position, of the bottom plate. The limiting rings are arranged on the outer sides of the corners of the upper ends of the side surrounding plates and correspond to the second steel wire ropes one to one; the second steel wire ropes extend upwards to penetrate through the corresponding limiting rings; the limiting rings are arranged at the corners of the upper ends of the side coamings, the second steel wire rope for controlling the bottom plate to be opened and closed penetrates through the limiting rings, force application points of the second steel wire rope to the loading and unloading box are dispersed, the loading and unloading box is hoisted more stably and prevented from inclining and toppling, and potential safety hazards are eliminated; meanwhile, opening and closing control of the second steel wire rope on the bottom plate is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to earthwork excavation technical field, especially in a novel deep foundation pit earthwork automatic loading and unloading box. BACKGROUND

[0002] In the traditional deep foundation pit earthwork excavation construction, the loading and unloading box mostly adopts semi-automatic loading and unloading and overturning type loading and unloading. The semi-automatic loading and unloading box improves the earthwork loading and unloading efficiency to a certain extent, but needs to be completed once in the process of using with manpower, and the personnel cooperation process must be under the crane boom, the loading and unloading process is high in danger coefficient, and the loading and unloading efficiency is low. The overturning type loading and unloading box does not need personnel cooperation, which reduces the personnel risk to a certain extent, but the stress is uneven in the process of dumping the stone block, the box body is easy to deform and damage, and the power required for turning the box body is high.

[0003] The patent with publication number CN214087310U is a deep foundation pit earthwork unloading and hoisting device, which realizes automatic loading and unloading of earthwork by using a funnel with an openable and closable bottom part, without manual intervention or tilting of the funnel. However, during the hoisting and moving process, the steel wire ropes for lifting the funnel and controlling the opening and closing of the bottom part need to be lifted synchronously. When operating, if the steel wire rope for controlling the bottom part is wound too much and rises too fast, the steel wire rope for lifting the funnel will not be stressed. Since the steel wire rope for controlling the bottom part needs to control the opening and closing of the bottom part, the force point is concentrated at the center of the funnel bottom, the center of gravity of the funnel filled with earthwork is high and in a moving state, and it is easy to tilt or even dump, which has certain safety hazards. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving at least one of the problems in the prior art, and provides a novel deep foundation pit earthwork automatic loading and unloading box.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A novel deep foundation pit earthwork automatic loading and unloading box comprises:

[0007] The side wall plate contains earthwork on the inside;

[0008] Two split bottom plates are hinged to the lower side of the side wall plate;

[0009] A plurality of first steel wire ropes are connected to the upper end corner of the side wall plate;

[0010] A plurality of second steel wire ropes are connected to the end part away from the hinge of the bottom plate;

[0011] Further comprising:

[0012] A plurality of limiting rings are arranged outside the upper end corner of the side wall plate and correspond to the second steel wire rope.

[0013] Further, the bottom plate edge is connected with a first L-shaped plate, one end of the first L-shaped plate is connected to the lower side of the bottom plate edge, and the other end is hingedly connected to the lower end outside of the side wall plate.

[0014] Further, the bottom plate end is connected with a second L-shaped plate, one end of the second L-shaped plate is connected to the lower side of the bottom plate end, and the other end is connected to the second steel wire rope.

[0015] Further, the lower end of the first steel wire rope is connected with a first lifting ring, and the first lifting ring is hingedly connected to the upper end of the side wall plate.

[0016] Further, the lower end of the second steel wire rope is connected with a second lifting ring, and the second lifting ring is hingedly connected to the bottom plate end.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model discloses a limiting ring is arranged on the upper end corner of the side wall plate, and the second steel wire rope that controls the opening and closing of the bottom plate passes through the limiting ring, so that the force point of the second steel wire rope on the loading and unloading box is dispersed, the loading and unloading box hoisting is more stable, the loading and unloading box is prevented from tilting and toppling, and the safety hidden danger is eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the first perspective three-dimensional structure schematic view of the utility model.

[0020] Figure 2 It is the second perspective three-dimensional structure schematic view of the utility model.

[0021] Figure 3 It is the side view structure schematic view of the utility model.

[0022] Figure 4 It is the bottom view structure schematic view of the utility model.

[0023] In the drawing: 1, side wall plate, 2, bottom plate, 3, first steel wire rope, 4, second steel wire rope, 5, limiting ring, 6, first L-shaped plate, 7, second L-shaped plate, 8, first lifting ring, 9, second lifting ring. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in combination with the drawings. The drawing is a simplified schematic view, and only the basic structure of the utility model is schematically shown, so it only shows the structure related to the utility model.

[0025] Specific embodiments of the novel automatic loading and unloading box for deep foundation pit rock provided by this utility model:

[0026] Please see Figures 1-4 The new type of automatic loading and unloading box for deep foundation pit rock includes side panels 1, two split bottom plates 2, several first steel wire ropes 3, several second steel wire ropes 4, and several limiting rings 5.

[0027] Side panel 1 is formed by bending a single piece of steel plate into a rectangular cylindrical structure, which accommodates excavated soil and rock. The steel plate is 20 mm thick, and the joints are welded on both the inner and outer sides to reduce weak points. Side panel 1 has openings on both the upper and lower sides. The upper opening is used to facilitate the excavation of excavated soil and rock at the bottom of the deep foundation pit. The lower opening is used to release the excavated soil and rock after it has been lifted out of the deep foundation pit.

[0028] Two hinged base plates 2 are symmetrically hinged to the underside of the side panel 1. The base plates 2 are made of 20 mm thick steel plates and are designed to open in opposite directions. When closed, they seal the opening on the underside of the side panel 1 and support the earthwork inside the side panel 1. When the base plates 2 are opened, they release the earthwork.

[0029] The use of thickened side panels 1 and bottom plates 2 can improve service life and reduce the need for deformation, replacement, and wear repair during loading and unloading; it can also prevent disruption to normal use during construction and increase the stability of the equipment during hoisting, thus ensuring construction safety.

[0030] Several first steel wire ropes 3 are connected to the upper corners of the side panel 1; in this embodiment, there are four first steel wire ropes 3, which are respectively connected to the four corners of the upper end of the side panel 1, and the diameter of the first steel wire rope 3 is twelve millimeters; the four first steel wire ropes 3 are driven by the same winch on the crane.

[0031] Several second wire ropes 4 are connected to the ends of the base plate 2 away from the hinge; in this embodiment, the diameter of the second wire rope 4 is twelve millimeters; there are four second wire ropes 4, which are respectively connected to the free corners of the two base plates 2. The four second wire ropes 4 are driven by the same winch on the crane.

[0032] The external crane uses two identical winches to drive the side panel 1 and the base plate 2 respectively. After loading earth and stone, the two winches are started simultaneously to lift the loading and unloading container. During the horizontal movement, the crane boom swings, eliminating the need to adjust the lifting speed of the two winches during the lifting process, thus reducing construction risks caused by insufficient human operation skills.

[0033] The base plate 2 is connected to the edge of a first L-shaped plate 6. One end of the first L-shaped plate 6 is welded to the lower edge of the base plate 2, and the other end is hinged to the lower outer side of the side panel 1. The first L-shaped plate 6 is made of 32 mm thick steel plate. Each base plate 2 is connected to two first L-shaped plates 6. The bottom of the side panel 1 is provided with four hinge seats that are hinged to the first L-shaped plates 6.

[0034] The bottom plate 2 is connected to a second L-shaped plate 7. One end of the second L-shaped plate 7 is welded to the lower side of the bottom plate 2, and the other end is connected to the second steel wire rope 4. The second L-shaped plate 7 is made of 20 mm thick steel plate. Each bottom plate 2 is connected to two second L-shaped plates 7. The two second L-shaped plates 7 connected to each bottom plate 2 are located on both sides of the side panel 1.

[0035] The lower ends of the first steel wire rope 3 are all connected to the first lifting ring 8, which is hinged to the upper end of the side panel 1. The lower ends of the second steel wire rope 4 are all connected to the second lifting ring 9. The second lifting ring 9 is hinged to the end of the base plate 2, specifically, the second lifting ring 9 is hinged to the upper end of the second L-shaped plate 7.

[0036] The upper end of the side panel 1 has a through hole for the first lifting ring 8 to pass through, and the upper end of the second L-shaped plate 7 has a through hole for the second lifting ring 9 to pass through. Both the first lifting ring 8 and the second lifting ring 9 include a U-shaped rod, which is made of 12 mm round steel. A bolt or pin passes through the open end of the U-shaped rod, and the bolt or pin passes through the aforementioned through hole to achieve the hinge connection of the lifting ring. The hinge seat, bolt, or pin should be made of wear-resistant, thickened steel.

[0037] Due to the large weight of the hoisted stones, the four first wire ropes 3 are controlled by the main hoist winch; the four second wire ropes 4 are controlled by the auxiliary hoist winch. During the lifting process, the loading and unloading box bottom plate 2 is in a closed state. The two winches lift simultaneously, so that the first wire ropes 3 and the second wire ropes 4 are under tension at the same time, ensuring that the bottom plate 2 remains closed. After the crane boom swings into position, the main hoist remains stationary while the auxiliary hoist is slowly lowered. Due to the gravity of the stones, the bottom plate 2 opens at a uniform speed, realizing the unloading of the stones.

[0038] Ideally, the first wire rope 3 and the second wire rope 4 operate at the same speed. If the upward speed of the first wire rope 3 is greater than that of the second wire rope 4, the bottom plate 2 will open, causing leakage or even complete unloading of the earth and rock during hoisting. This situation is unacceptable. Therefore, in actual operation, the upward speed of the first wire rope 3 cannot exceed that of the second wire rope 4; that is, the upward speed of the second wire rope 4 should be equal to or slightly greater than that of the first wire rope 3. However, the stress point of the second wire rope 4 is concentrated at the center of the bottom of the loading and unloading container. This concentration of stress can lead to the first wire rope 3 becoming unloaded if the second wire rope 4 is lifted too quickly during operation. This would result in the center of gravity of the loaded and unloading container, filled with earth and rock, being higher than the stress point of the second wire rope 4. Consequently, the container is prone to tilting or even tipping over during horizontal movement.

[0039] Therefore, in this embodiment, a number of limiting rings 5 ​​are provided on the outer side of the upper corner of the side panel 1. There are four limiting rings 5, and they correspond one-to-one with the second steel wire rope 4. The second steel wire rope 4 extends upward and passes through the corresponding limiting ring 5.

[0040] The limiting ring 5 located at the upper corner of the side panel 1 disperses the force application points of the second wire rope 4, ensuring independent and stable support for the hoisting and unloading container even when the second wire rope 4 rises too quickly, without causing the container to tilt or fall. Furthermore, it does not affect the control of the second wire rope 4 over the opening and closing of the base plate 2.

[0041] In some other embodiments, a fixed pulley with a wire rope anti-derailment structure can be used instead of the limiting ring 5 to reduce friction on the second wire rope 4.

[0042] The main body of the loading and unloading container is made of steel. During use, it should be inspected regularly to ensure that all parts are firmly connected. Since the rock excavation in the foundation pit contains cohesive soil, the cohesive soil adheres to the loading and unloading container and absorbs moisture, which can easily cause the container to rust. During long periods of downtime in earthwork excavation, the loading and unloading container should be derusted to extend its service life and avoid affecting its later use.

[0043] During the excavation of rock and soil, the loading and unloading of containers and the excavator at the bottom of the foundation pit work together to achieve fully mechanized construction. This avoids the risks of slowing down loading and unloading efficiency and causing safety accidents caused by manual labor. At the same time, the facility provides sufficient working space for subsequent sub-projects, further improving construction efficiency while ensuring safety, which is conducive to reducing project costs and increasing efficiency.

[0044] This utility model was tested in the excavation of the third basement level of the Shenzhen-Huizhou Intercity Railway (Qianhai Free Trade Zone to Pingdi Section) of the Shenzhen Metropolitan Area Intercity Railway in the Guangdong-Hong Kong-Macao Greater Bay Area. It reduced the difficulty of operation, eliminated safety hazards, and prevented tilting and tipping during the loading, unloading, and hoisting of containers.

[0045] This invention solves the shortcomings of traditional earthwork loading and unloading processes, such as slow loading and unloading speed and high construction risks. It can be used for a long time, stably and efficiently in large-volume earthwork loading and unloading, providing an effective working surface for subsequent sub-projects, thereby reducing risks, saving costs, improving efficiency, and shortening the overall construction cycle of the project.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel automatic loading and unloading box for earthwork in deep foundation pit, comprising: a side wall (1) containing earthwork on the inside; two opposite bottom plates (2) hinged to the lower side of the side wall (1); a plurality of first steel wires (3) connected to the upper end corner of the side wall (1); a plurality of second steel wires (4) connected to the end of the bottom plate (2) away from the hinge; characterized in that it further comprises: a plurality of limiting rings (5) arranged on the outside of the upper end corner of the side wall (1) and corresponding to the second steel wires (4); the second steel wires (4) extend upwards through the corresponding limiting rings (5).

2. The novel automatic loading and unloading box for deep foundation stone quantity according to claim 1, characterized in that, The edge of the bottom plate (2) is connected with a first L-shaped plate (6), one end of which is connected to the lower side of the edge of the bottom plate (2) and the other end is hinged to the lower end outside of the side wall (1).

3. The novel automatic loading and unloading box for deep foundation stone quantity according to claim 1, characterized in that, The end of the bottom plate (2) is connected with a second L-shaped plate (7), one end of which is connected to the lower side of the end of the bottom plate (2) and the other end is connected with the second steel wire (4).

4. The novel automatic loading and unloading box for deep foundation stone quantity according to claim 1, characterized in that, The lower end of the first steel wire (3) is connected with a first lifting ring (8), which is hinged to the upper end of the side wall (1).

5. The novel automatic loading and unloading box for deep foundation pit stone quantity according to claim 1 or 3, characterized in that, The lower end of the second steel wire (4) is connected with a second lifting ring (9), which is hinged to the end of the bottom plate (2).

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