An excavation operation device for foundation pits

Abstract

The present invention relates to an excavation operation device for a foundation pit, which includes a device support. A lifting mechanism for lifting a soil loading bucket by a steel wire rope is arranged on the device support. The soil loading bucket includes a handle and a hopper for loading soil. Both ends of the handle are hinged to the hopper through a handle hinge structure. The steel wire rope is connected to the handle. A hopper guiding structure is provided on the hopper. A hopper guiding track for guiding and cooperating with the hopper guiding structure to guide the hopper from the center of the foundation pit to the periphery of the foundation pit is arranged on the device support above the upper side of the foundation pit opening. During the process of the hopper being lifted by the steel wire rope, there is a lifting position where the hopper guiding structure is located above the handle hinge structure. During the process of the hopper being lifted by the steel wire rope, there is also a dumping position where the hopper guiding structure cooperates with the hopper guiding track to make the hopper guiding structure located below the handle hinge structure. The present invention solves the technical problem in the prior art that the operator manually unloads materials, with high working intensity and time-consuming and laborious.

Description

Technical Field

[0001] The present invention relates to a foundation pit excavation operation device in the field of foundation pit operation equipment. Background Art

[0002] In power construction projects, the operation of deep foundation pits for iron tower foundations is the most basic, largest in quantity, and highly dangerous important process. Since the foundation pit operation sites are usually in irregular areas such as mountains and hills, heavy earth excavation equipment is not easy to drive in place, and manual earth excavation still dominates. During operation, people dig soil at the bottom of the foundation pit. Due to the relatively deep depth of the foundation pit, how to transport the excavated soil to the ground on the upper side of the foundation pit has become the key to foundation pit operation.

[0003] Chinese Patent CN111851511A discloses "an integrated intelligent deep foundation pit operation machine", which includes a pit mouth support. An installation frame is arranged on the pit mouth support, and an electric hoist is installed on the installation frame. During use, a soil loading bucket is connected to the electric hoist, and the height of the soil loading bucket is lifted by the electric hoist. The operator stands beside the foundation pit. When the soil loading bucket reaches the upper end of the foundation pit, the operator manually drags the soil loading bucket to the side of the foundation pit and manually performs the unloading operation.

[0004] The existing method of transporting soil has the following problems: 1. The electric pulley lifts the soil loading bucket through a steel wire rope. During the lifting process of the soil loading bucket, it will rotate due to instability, resulting in the operator being unable to receive the material at a suitable angle; 2. The operator manually unloads the material, with low efficiency and high labor intensity, and there are great safety hazards. Slightly careless, the operator will be taken into the foundation pit by the soil loading bucket. Summary of the Invention

[0005] The purpose of the present invention is to provide a foundation pit excavation operation device to solve the technical problem of large labor intensity and time-consuming and laborious manual unloading by operators in the prior art.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows:

[0007] A foundation pit excavation operation device includes a device support. A lifting mechanism for lifting a soil loading bucket through a steel wire rope is arranged on the device support. The soil loading bucket includes a handle and a hopper for loading soil. Both ends of the handle are hinged to the hopper through a handle hinge structure. The steel wire rope is connected to the handle. A hopper guiding structure is arranged on the hopper. A hopper guiding track for guiding and cooperating with the hopper guiding structure to guide the hopper from the center of the foundation pit to the periphery of the foundation pit is arranged on the device support above the upper side of the foundation pit opening. During the lifting process of the hopper along with the steel wire rope, there is a lifting working position where the hopper guiding structure is located above the handle hinge structure. During the lifting process of the hopper along with the steel wire rope, there is also a dumping working position where the hopper guiding structure cooperates with the hopper guiding track to make the hopper guiding structure located below the handle hinge structure.

[0008] The foundation pit excavation device also includes a soil dumping guide plate whose upper end extends to the upper side of the foundation pit pit mouth, and the lower end of the soil dumping guide plate extends to the outside of the foundation pit pit mouth. The upper end of the soil dumping guide plate is used to receive the soil dumped downward by the hopper at the soil dumping station.

[0009] The lifting mechanism is an electric hoist lifting mechanism.

[0010] The hopper guide track is an arc-shaped track which gradually extends from bottom to top away from the center of the foundation pit.

[0011] The center of gravity of the hopper is located at the lower side of the handle hinge structure.

[0012] The hopper guide structure is distributed on two corresponding sides of the hopper where the handle hinge structure is located.

[0013] A bucket attitude adjuster is provided on the lower side of the bucket guide track. The bucket attitude adjuster includes an arc-shaped base which is located outside the bucket when in use. The lower end surface of the arc-shaped base is a guide surface which protrudes downward in the middle and gradually extends upward on both sides. The upper end of the guide surface is connected to the bucket guide track. During the bucket lifting process, the bucket guide structure contacts and guides the guide surface, so that the bucket rotates and the bucket guide structure can enter the bucket guide track.

[0014] When the hopper passes through the hopper posture adjuster, at least one hopper guide structure remains in contact with the corresponding guide surface.

[0015] The hopper guide structure is a rolling element structure.

[0016] The beneficial effects of the present invention are as follows: when in use, the steel wire rope is used to lift the bucket through the handle. When inside the foundation pit, the bucket guide structure does not cooperate with the bucket guide track. During this process, the bucket is in a lifting position where the bucket guide structure is located on the upper side of the handle hinged structure, so the soil at the bottom of the foundation pit can be smoothly lifted to a certain height; when the bucket is lifted to a certain height, the bucket guide structure cooperates with the bucket guide track on the upper side of the foundation pit, and under the guiding action of the bucket guide track, the bucket will move from the center of the foundation pit to the periphery of the foundation pit. At the same time, with the flipping of the handle, the handle hinged structure will move to the upper side of the bucket guide structure, and the bucket is in the soil pouring position, so the soil in the bucket can be automatically poured out without manual soil pouring. After the soil pouring is completed, the steel wire rope is lowered, and the bucket can automatically reset under the action of its own gravity.

[0017] Furthermore, when the hopper moves upward in the foundation pit, the hopper may rotate. To ensure that the hopper guiding structure can be smoothly docked with the hopper guiding track, a hopper attitude adjuster is provided on the lower side of the hopper guiding track. During the upward movement of the hopper, at least one side of the hopper guiding structure will contact the corresponding guiding surface. As the hopper continues to move upward, under the guiding action of the guiding surface, the hopper will rotate until the hopper guiding structure corresponds to the track opening of the hopper guiding track, ensuring that the hopper guiding structure can smoothly enter the hopper guiding track. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a diagram showing the usage state of an embodiment of the present invention;

[0019] Figure 2 is Figure 1 a schematic diagram showing the change of the hopper from the lifting station to the dumping station in;

[0020] Figure 3 is Figure 1 a schematic structural diagram of the soil loading hopper in

[0021] Figure 4 is Figure 3 a side view of;

[0022] Figure 5 is Figure 3 a top view of;

[0023] Figure 6 is a schematic layout diagram of the soil loading hopper and the hopper attitude adjuster;

[0024] Figure 7 is a schematic cooperation diagram when the hopper guiding structure just contacts the hopper attitude adjuster from a bottom-up view;

[0025] Figure 8 is a schematic diagram of the state of the hopper guiding structure after being guided by the hopper attitude adjuster from a bottom-up view;

[0026] Figure 9 is Figure 7 a side view of the cooperation between the hopper guiding structure and the hopper attitude adjuster in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The embodiment of the foundation pit excavation operation device in the present invention is as Figures 1-9 shown: It includes a device support for being placed at the foundation pit opening, and a lifting mechanism for lifting the soil loading hopper through a steel wire rope 12 is provided on the device support. The lifting mechanism in this embodiment is an electric hoist lifting mechanism 11.

[0028] The soil loading device includes a handle 5 and a hopper 2 for loading soil. The handle 5 is in the shape of a portal frame structure. The two ends of the handle 5 are hinged to the hopper 2 through a handle hinge structure 3. The steel wire rope 12 is connected to the upper end of the handle 5. In this embodiment, connecting plates 13 are provided on both sides of the hopper 2. The hopper hinge structure includes a hinge shaft connected between the connecting plate and the hopper and a hinge bearing sleeved on the hinge shaft. The hinge bearing is connected to the handle. A hopper guiding structure 4 is provided at the upper end of the connecting plate. In this embodiment, the hopper guiding structure 4 is a rolling body structure composed of bearings. The center of gravity of the hopper is located below the hopper hinge structure.

[0029] On the device support, above the upper side of the foundation pit opening, there is a hopper guiding track 10 for guiding and cooperating with the hopper guiding structure to guide the hopper from the center of the foundation pit to the periphery of the foundation pit. The hopper guiding track includes two track grooves arranged at intervals left and right. In this embodiment, the track grooves are arc-shaped track grooves that gradually extend away from the center position of the foundation pit from bottom to top.

[0030] During the process of the hopper being lifted by the steel wire rope, there is a lifting position where the hopper guiding structure 4 is located above the handle hinge structure 3. During the process of the hopper being lifted by the steel wire rope, there is also a dumping position where the hopper guiding structure 4 cooperates with the hopper guiding track to make the hopper guiding structure 4 located below the handle hinge structure 3. The foundation pit excavation device further includes a dumping guiding plate 8 whose upper end extends to the upper side of the foundation pit opening. The lower end of the dumping guiding plate 8 extends to the outside of the foundation pit opening. The upper end of the dumping guiding plate is used to receive the soil dumped by the hopper in the dumping position.

[0031] Below the hopper guiding track, there is a hopper attitude adjuster. The hopper attitude adjuster includes an arc-shaped base body 7 that is located outside the hopper during use. The arc-shaped base body means that when viewed from the top, the hopper attitude adjuster is an arc-shaped structure as a whole. The hopper can pass through the inside of the arc-shaped base body in the vertical direction. The lower end surface of the arc-shaped base body is a guiding surface 6 that protrudes downward in the middle and gradually extends upward on both sides. Item 15 in the figure represents the protruding structure at the lower end of the arc-shaped base body. The upper end of the guiding surface is connected to the hopper guiding track 10. Assuming that when the hopper rotates, the rotation trajectory of the hopper guiding structure is a circle, and the circumference of this rotation trajectory is L, then the circumferential length of the arc-shaped base body is not less than half of L, so that during the hopper lifting process, at least one hopper guiding structure is in contact guiding cooperation with the corresponding guiding surface.

[0032] During operation, the operator fills the excavated soil into the hopper at the bottom of the foundation pit. The electric hoist lifts the hopper 2 upward through the steel wire rope 12. During the lifting process, the hopper 2 may produce a certain deflection. However, no matter how the hopper deflects, when the hopper reaches the position of the arc-shaped base body 7, there will always be at least one hopper guiding structure 4 in contact with the corresponding guiding surface 6. As the hopper continues to be lifted, under the guiding action of the guiding surface, the hopper will gradually swing to Figure 8At this posture, the two hopper guiding structures 4 are arranged left and right, and can just smoothly enter the corresponding hopper guiding tracks 10. As the hopper is further lifted, the hopper guiding structure 4 moves outward along the hopper guiding track 10 towards the outside of the foundation pit. At the same time, the height of the hopper hinge structure is gradually higher than that of the hopper guiding structure, and the whole hopper is in a flipped state, so that the soil in the hopper can be dumped out. The soil dumping guide plate can guide the soil to the outside of the foundation pit edge. After the soil dumping is completed, the hopper is lowered, and the hopper can automatically reset under its own gravity. Figure 2 The arrow direction in Figure 2 indicates the process sequence of the lifting. The posture change of the hopper during the lifting process is shown from left to right in

[0033] In other embodiments of the present invention: the soil dumping guide plate may not be provided. At this time, the hopper guiding track needs to extend to the outside of the foundation pit edge; the hopper guiding track may also be an inclined track; the hopper posture adjuster may not be provided. At this time, the hopper can be manually straightened, or at least two lifting steel wires can be provided to reduce the deflection of the hopper; the hopper guiding structure may also be a fixed shaft.

[0034] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An excavation operation device for a foundation pit, comprising a device support, and a lifting mechanism for lifting a soil loading bucket by a steel wire rope is arranged on the device support, characterized in that: The soil loading bucket includes a handle and a bucket for loading soil. Both ends of the handle are hingedly connected to the bucket through a handle hinge structure. The wire rope is connected to the handle. A bucket guide structure is provided on the bucket. A bucket guide track is provided on the upper side of the pit opening of the foundation pit on the device bracket, which is used to cooperate with the bucket guide structure to guide the bucket along the center of the foundation pit to the periphery of the foundation pit. During the process of the bucket being lifted with the wire rope, there is a lifting position in which the bucket guide structure is located on the upper side of the handle hinge structure. During the process of the bucket being lifted with the wire rope, there is also a lifting position in which the bucket guide structure cooperates with the bucket guide track in which the bucket guide structure is located on the upper side of the handle hinge structure. At the soil dumping station on the lower side of the hinged structure, the lifting mechanism is an electric hoist lifting mechanism, and the bucket guide structure is distributed on both sides of the bucket where the handle hinged structure is located. A bucket posture adjuster is provided on the lower side of the bucket guide track. The bucket posture adjuster includes an arc-shaped base located outside the bucket when in use, and the lower end face of the arc-shaped base is a guide surface that protrudes downward in the middle and gradually extends upward on both sides. The upper end of the guide surface is connected to the bucket guide track. During the bucket lifting process, the bucket guide structure contacts and guides the guide surface, so that the bucket rotates accordingly and the bucket guide structure can enter the bucket guide track.

2. The foundation pit excavation operation device according to claim 1, wherein: The foundation pit excavation device also includes a soil dumping guide plate whose upper end extends to the upper side of the foundation pit pit mouth, and the lower end of the soil dumping guide plate extends to the outside of the foundation pit pit mouth. The upper end of the soil dumping guide plate is used to receive the soil dumped downward by the hopper at the soil dumping station.

3. The foundation pit excavation operation device according to claim 1, wherein: The hopper guide track is an arc-shaped track which gradually extends from bottom to top away from the center of the foundation pit.

4. The foundation pit excavation operation device according to claim 1, characterized in that: The center of gravity of the hopper is located at the lower side of the handle hinge structure.

5. The foundation pit excavation operation device according to claim 1, characterized in that: When the hopper passes through the hopper posture adjuster, at least one hopper guide structure remains in contact with the corresponding guide surface.

6. The foundation pit excavation operation device according to claim 1, characterized in that: The hopper guide structure is a rolling element structure.

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