Feeding hopper for long, large and deep foundation pit vertical elevator

Abstract

The utility model discloses a feed hopper for long and big deep foundation pit vertical elevator, including two first wallboards of front -back direction and two second wallboards of left and right direction, two first wallboards are fixedly connected respectively in two second wallboard front and back end and form the open structure of big lower end small upper end, two first wallboards and two second wallboard lower end fixed connection in the hopper bottom plate, the hopper bottom plate middle part is provided with with the open structure lower end same big material leakage, the feed hopper is close to the bottom and is provided with the framework in, the framework adopts a longitudinal rod and multiple horizontal rods fixed connection, the outlet width of feed hopper is not greater than the material storage hopper width of lifting load belt. The soil sent by the framework plays a buffering role, avoids directly impacting the lifting load belt due to excessive impact force, causes the lifting load belt to be easily damaged under long -term impact, and the outlet width of the feed hopper is limited, avoids the complete feeding into the material collecting place of the lifting load belt, avoids spilling, and influences the belt operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway tunnel deep foundation pit excavation and transfer equipment, specifically relating to the feeding hopper for a vertical lifting machine for long and deep foundation pits. Background Technology

[0002] Vertical earthwork transportation faces unique challenges in the excavation of long and deep railway foundation pits. While integrated excavator-loaders (Chinese patent application number 2024106850234) can achieve efficient earthwork excavation and horizontal transportation in open-cut excavation, they are difficult to adapt to the confined space of deep foundation pits in railway tunnel construction. Furthermore, these deep foundation pits often feature multiple layers of lateral supports arranged at intervals. Due to limited working space and complex terrain, earthwork must be lifted from the bottom of the pit for transportation. Conventional methods involve using integrated excavators-loaders in conjunction with trucks, which occupies construction space within the pit and is difficult to transport due to steep slopes. In addition, the presence of deep foundation pit support structures places higher demands on equipment size and operational flexibility; the equipment must be able to enter confined spaces and complete operations without affecting the support structures. The challenge lies in achieving efficient and safe vertical earthwork transportation in complex terrain.

[0003] To address the aforementioned technical issues, engineers designed a vertical hoist for long and deep foundation pits. The specific structure includes a traveling mechanism, a rotating disc, and a vertically bending Z-shaped belt conveyor. The rotating disc is mounted on the traveling mechanism and connected to the vertically bending Z-shaped belt conveyor via a pitching and lifting mechanism, enabling it to maintain a vertical orientation. The lower horizontal section of the vertically bending Z-shaped belt conveyor serves as the inlet, and the upper horizontal section serves as the outlet. The vertically bending Z-shaped belt conveyor comprises a first belt conveyor frame, a second belt conveyor frame, a third belt conveyor frame, and a lifting and carrying belt. To facilitate the feeding of excavated soil onto the lifting and carrying belt and to prevent clogging, a feed hopper is installed above the third belt conveyor frame. However, conventional hoppers have problems: soil entering the hopper completely enters the collection point of the lifting and carrying belt, easily spilling and affecting belt operation. Furthermore, the excessive impact force of the soil directly impacts the lifting and carrying belt, causing it to be easily damaged under long-term impact. Utility Model Content

[0004] The purpose of this invention is to provide a feeding hopper for a vertical hoist for long and deep foundation pits, solving the problems of existing feeding hoppers where soil easily spills out during feeding, affecting belt operation, and the excessive impact force of the soil directly impacting the hoisting belt, causing the hoisting belt to be easily damaged under long-term impact.

[0005] The technical solution adopted in this utility model is a feeding hopper for a vertical lifting machine for long and deep foundation pits, comprising two first wall panels in the front-to-back direction and two second wall panels in the left-to-right direction. The two first wall panels are respectively fixedly connected to the front and rear ends of the two second wall panels to form an open structure with a larger upper end and a smaller lower end. The lower ends of the two first wall panels and the two second wall panels are fixedly connected to the bottom plate of the hopper. A material leakage port of the same size as the lower end of the open structure is opened in the middle of the bottom plate of the hopper. A frame is set near the bottom of the feeding hopper. The frame is fixedly connected by a longitudinal rod and multiple transverse rods. The outlet width of the feeding hopper is not greater than the width of the material storage hopper of the lifting conveyor belt.

[0006] Preferably, a rubber baffle is provided around the feed hopper near the discharge port.

[0007] Preferably, an electromagnetic vibrator is provided on the side wall of the feed hopper.

[0008] Preferably, a first reinforcing rib and a second reinforcing rib are respectively provided between the bottom plate of the hopper and the first wall plate and the second wall plate. The top of the first wall plate and the second wall plate are bent outward with short horizontal plates, and the bottom of the first wall plate and the second wall plate are bent outward with edges. The first reinforcing rib and the second reinforcing rib are provided with weight reduction holes.

[0009] Preferably, the bottom plate of the hopper is provided with bolt holes on the front and rear sides respectively, which are bolt holes that connect to the top of the third belt conveyor frame. The bolt holes are strip-shaped through holes in the front and rear direction.

[0010] Preferably, a spray pipe is provided around the top of the feed hopper.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: a frame consisting of a longitudinal rod and multiple transverse rods is installed at the feed hopper. Under the loosening effect of the frame, the soil fed in can be evenly sprinkled onto the belt, which is conducive to material discharge, avoids clogging of the feed hopper outlet, and also buffers the soil fed in, preventing the conveyor belt from being directly impacted by excessive impact force, which could easily damage the conveyor belt under long-term impact. In addition, the outlet width of the feed hopper is not greater than the width of the material storage hopper of the conveyor belt, preventing the feed material from completely entering the collection point of the conveyor belt, avoiding spillage, and affecting the operation of the belt. Attached Figure Description

[0012] Figure 1 This is a top view of the feed hopper structure.

[0013] Figure 2 This is a side view of the feed hopper structure.

[0014] Figure 3 This is a schematic diagram of the feed hopper assembly.

[0015] Figure 4 A schematic diagram of a vertical hoisting machine for long and deep foundation pits;

[0016] Figure 5 This is a schematic diagram of the vertical hoisting machine for long and deep foundation pits from another perspective. Detailed Implementation

[0017] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0018] Example 1

[0019] like Figure 1-5 As shown, the feeding hopper for a vertical hoist for long and deep foundation pits includes two first wall plates 3134 in the front-to-back direction and two second wall plates 3135 in the left-to-right direction. The two first wall plates 3134 are fixedly connected to the front and rear ends of the two second wall plates 3135 respectively, forming an open structure with a larger upper end and a smaller lower end. The lower ends of the two first wall plates 3134 and the two second wall plates 3135 are fixedly connected to the bottom plate 3136 of the hopper. The bottom plate 3136 has a central opening of the same size as the lower end of the open structure. The feed hopper 313 has a frame 3131 near the bottom of the feed hopper. The frame 3131 is fixedly connected by a longitudinal rod and multiple transverse rods. The frame is installed at the feed hopper. The soil fed in can be evenly sprinkled onto the belt under the loosening effect of the frame, which is conducive to material discharge and avoids clogging of the feed hopper outlet. It can also buffer the soil fed in, so as to avoid the direct impact of excessive impact force on the lifting conveyor belt, which would easily damage the lifting conveyor belt under long-term impact.

[0020] Furthermore, a rubber baffle 3132 is provided around the feed hopper 313 near the discharge port. The rubber baffle 3132 can maintain elastic contact with the material storage hopper. The use of the elastic contact rubber baffle 3132 can completely drop the fed soil into the belt, reduce the probability of side leakage, reduce the side leakage of soil falling onto the belt roller or electric equipment and affecting the operation of the equipment, and improve the stability and safety of the belt equipment operation.

[0021] In addition, in order to allow the material to fall more smoothly into the belt feeder, an electromagnetic vibrator 3133 is installed on the side wall of the feed hopper 313; a spray pipe is installed around the top of the feed hopper 313 to suppress dust when there is too much dust.

[0022] A first reinforcing rib 3137 and a second reinforcing rib 3138 are respectively provided between the hopper bottom plate 3136 and the first wall plate 3134 and the second wall plate 3135. The top of the first wall plate 3134 and the second wall plate 3135 are bent outwards with short horizontal plates. The short horizontal plates serve to reinforce the wall plates and facilitate the installation of the dust suppression pipe for spraying. The bottom of the first wall plate 3134 and the second wall plate 3135 are bent outwards to facilitate welding with the hopper bottom plate and improve the reliability of the connection. The first reinforcing rib 3137 and the second reinforcing rib 3138 are provided with weight-reducing holes, which can reduce weight while ensuring rigidity and strength. The front and rear sides of the hopper bottom plate 3136 are respectively provided with bolt holes for connecting to the top of the third belt conveyor frame 303. The bolt holes are strip-shaped through holes in the front and rear direction, which facilitates the adjustment of the front and rear position of the feed hopper. The adjustment is convenient and quick.

[0023] The feed hopper is installed above the third section of the conveyor belt frame 303. The outlet width of the feed hopper 313 is not greater than the width of the material storage hopper of the lifting conveyor belt 304. This width limitation is to prevent the feed material from completely entering the collection point of the lifting conveyor belt, thus avoiding spillage and affecting the belt operation.

[0024] The third section of the conveyor frame 303 is the feeding section between the vertical hoist for long and deep foundation pits and the excavation equipment. Specifically, the vertical hoist for long and deep foundation pits includes a traveling mechanism 1, a rotating disc 2, and a vertically bent Z-shaped conveyor belt 3. The rotating disc 2 is installed on the traveling mechanism 1 and is connected to the vertically bent Z-shaped conveyor belt 3 through a pitching and lifting mechanism 4, which can drive the vertically bent Z-shaped conveyor belt 3 to remain vertical. The lower horizontal section of the vertically bent Z-shaped conveyor belt 3 is the feeding port, and the upper horizontal section is the discharging port. The traveling mechanism 1 adopts a crawler-type traveling mechanism, and the frame of the crawler-type traveling mechanism... An electric rotating disc 2 is installed on the top. The base of the rotating disc 2 is fixedly connected to the top of the frame of the tracked walking mechanism. The output rotating part of the rotating disc 2 is fixedly connected to a strip panel 201, which can drive the strip panel 201 to rotate. The walking mechanism 1 travels to the top of the deep foundation pit 70 to be excavated. This position can ensure that the vertical bending Z-shaped belt conveyor 3 is inserted into the gap between two rows of adjacent transverse supports 80. The vertical bending Z-shaped belt conveyor is controlled to tilt through the pitching and lifting mechanism to keep the vertical bending Z-shaped belt conveyor vertical. The lifting and lowering mechanism is controlled to raise and lower it to the set position.

[0025] The vertical bending Z-shaped belt conveyor 3 includes a first belt conveyor frame 301, a second belt conveyor frame 302, a third belt conveyor frame 303, and a lifting and carrying belt 304. The first belt conveyor frame 301 has an inverted L-shaped structure, with its lower end hinged to the upper end of the second belt conveyor frame 302. The lower end of the second belt conveyor frame 302 is hinged to one end of the horizontal third belt conveyor frame 303. The vertical section of the first belt conveyor frame 301 is connected to the pitching and lifting mechanism 4. The third belt conveyor frame 303 is connected to the second belt conveyor frame 302 on both sides by two first folding and telescopic hydraulic cylinders, which can drive the third belt conveyor frame 303 to rotate and maintain perpendicularity and the same direction (i.e., 90°-180°) with the second belt conveyor frame 302. The second belt conveyor frame 302 is connected to the first belt conveyor frame 301 on both sides by two second folding and telescopic hydraulic cylinders 317, which can fold the second belt conveyor frame 302 to be perpendicular to the first belt conveyor frame 301. The conveyor frame 301 remains vertical. An electric roller 306 is installed at the free end of the horizontal section on the upper side of the first section of the conveyor frame 301, and a driven roller 307 is installed at the free end of the horizontal section of the third section of the conveyor frame 303. The first section of the conveyor frame 301, the second section of the conveyor frame 302, and the third section of the conveyor frame 303 between the electric roller 306 and the driven roller 307 are equipped with idlers to support and lift the material-carrying belt 304. The material-carrying belt 304 is sleeved on the electric roller 306 and the driven roller 307. Multiple sets of cantilever belt counter-pressure rollers are symmetrically arranged on both sides of the length direction of the material-carrying belt 304. When the multiple sets of cantilever belt counter-pressure rollers are located on both sides of the back of the first section of the conveyor frame 301, the second section of the conveyor frame 302, and the third section of the conveyor frame 303, they serve to support or press the material-carrying belt 304. When they are located at the bends on the front of the first section of the conveyor frame 301, the second section of the conveyor frame 302, and the third section of the conveyor frame 303, they serve to support or press the material-carrying belt 304.

[0026] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. A feed hopper for a vertical lifting machine for long and deep foundation pits, characterized in that, It includes two first wall panels (3134) in the front-to-back direction and two second wall panels (3135) in the left-to-right direction. The two first wall panels (3134) are fixedly connected to the front and rear ends of the two second wall panels (3135) to form an open structure with a large upper end and a small lower end. The lower ends of the two first wall panels (3134) and the two second wall panels (3135) are fixedly connected to the bottom plate (3136) of the hopper. The bottom plate (3136) of the hopper has a material leakage port of the same size as the lower end of the open structure in the middle. The feed hopper (313) has a frame (3131) near the bottom. The frame (3131) is fixedly connected by a longitudinal rod and multiple transverse rods. The outlet width of the feed hopper is not greater than the width of the material storage hopper of the lifting conveyor belt (304).

2. The feeding hopper for a vertical lifting machine for long and deep foundation pits according to claim 1, characterized in that, A rubber baffle (3132) is installed around the feed hopper near the discharge port.

3. The feeding hopper for a vertical lifting machine for long and deep foundation pits according to claim 1, characterized in that, An electromagnetic vibrator (3133) is installed on the side wall of the feed hopper.

4. The feed hopper for a vertical lifting machine for long and deep foundation pits according to claim 1, characterized in that, A first reinforcing rib (3137) and a second reinforcing rib (3138) are respectively provided between the bottom plate (3136) of the hopper and the first wall plate (3134) and the second wall plate (3135). The top of the first wall plate (3134) and the second wall plate (3135) are bent outward with short horizontal plates, and the bottom of the first wall plate (3134) and the second wall plate (3135) are bent outward with edges. The first reinforcing rib (3137) and the second reinforcing rib (3138) are provided with weight reduction holes.

5. The feed hopper for a vertical lifting machine for long and deep foundation pits according to claim 1, characterized in that, The bottom plate of the hopper (3136) is provided with bolt holes on the front and rear sides respectively, which are bolt holes that connect to the top of the third belt conveyor frame. The bolt holes are strip-shaped through holes in the front and rear directions.

6. The feed hopper for a vertical lifting machine for long and deep foundation pits according to claim 1, characterized in that, A spray pipe is installed around the top of the feed hopper.

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