Vertical elevator for long, large and deep foundation pit and operation method of vertical elevator

Abstract

The invention discloses a long, large and deep foundation pit vertical elevator and an operation method thereof, and belongs to the technical field of deep and large foundation pit excavation equipment. The long, large and deep foundation pit vertical elevator specifically and structurally comprises a walking mechanism, a rotating disc and a vertical bending Z-shaped belt conveyor; the rotating disc is connected to the vertical bending Z-shaped belt conveyor through the pitching lifting mechanism and can drive the vertical bending Z-shaped belt conveyor to be kept vertical, the horizontal section of the lower end of the vertical bending Z-shaped belt conveyor is a feeding port, and the horizontal section of the upper end of the vertical bending Z-shaped belt conveyor is a discharging port. According to the structure, materials excavated in the deep foundation pit are transferred, excavation of deep foundation pits with different depths is achieved, the application range is wider, the equipment input cost is lower, the structure can walk at different positions, the structure adapts to excavation of longer deep foundation pits, equipment is convenient to carry, and the structure can particularly adapt to the deep foundation pits with transverse supports, so that the construction efficiency is improved. And the vertical bending Z-shaped belt conveyor is lowered into the deep foundation pit from the transverse supporting gap, so that rapid transfer and lap joint of equipment are realized.

Description

Technical Field

[0001] The invention relates to the technical field of railway tunnel deep foundation pit excavation and transfer equipment, in particular to a long and deep foundation pit vertical hoist and an operating method of the long and deep foundation pit vertical hoist. Background Art

[0002] During the excavation of long and deep railway foundation pits, vertical transfer operations present unique challenges. The excavator, loader, transporter, and unloader (Chinese patent application number 2024106850234) can achieve highly efficient excavation and horizontal transportation in open excavation conditions. However, it is difficult to directly adapt to the narrow working environment of deep foundation pits during open-cut railway tunnel construction. Furthermore, during the construction of these deep foundation pits, multiple layers of spaced-apart lateral supports are installed. Faced with deep foundation pits with these numerous lateral supports, the earthwork must be lifted upward from the bottom of the pit to complete transfer due to limited working space and complex terrain. Conventional methods use excavators and loaders in conjunction with trucks for transfer, which consumes construction space in the pit and is difficult to transport due to its steep slope. Furthermore, the presence of deep foundation pit support structures places higher demands on equipment size and operational flexibility. The equipment must be able to enter narrow spaces and complete operations without affecting the support structure. How can efficient and safe vertical earthwork transfer be achieved in complex terrain? Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a vertical hoist for long and deep foundation pits and an operating method thereof, which can quickly realize the rapid transportation of soil excavated from deep foundation pits when the construction space of deep foundation pits with lateral support structures is small, and can adapt to excavation and transportation at different depths, thereby reducing equipment costs.

[0004] The technical solution adopted by the present invention is: a vertical hoist for a long and deep foundation pit, including a traveling mechanism, a rotating disk and a vertical bending Z-shaped belt conveyor. The rotating disk is installed on the traveling mechanism, and the rotating disk is connected to the vertical bending Z-shaped belt conveyor through a pitch lifting mechanism and can drive the vertical bending Z-shaped belt conveyor to remain vertical. The lower horizontal section of the vertical bending Z-shaped belt conveyor is the feed port, and the upper horizontal section is the discharge port.

[0005] Furthermore, the output end of the rotating disk is fixedly connected to a strip panel, and the bottom of the strip panel near one end of the vertically bent Z-shaped belt conveyor is fixedly connected to two lifting columns, and the two lifting columns can rest on two supporting piers on the ground.

[0006] Furthermore, the above-mentioned pitch lifting mechanism includes a pitch frame, a pitch hydraulic cylinder and a lifting and telescopic hydraulic cylinder. The back of the pitch frame is hinged to one side of the output end of the rotating disk, the upper end of the pitch hydraulic cylinder is hinged to the pitch frame near the upper end, and the lower end is hinged to the other side away from the hinge of the rotating disk and the pitch frame. The pitch frame is a vertical strip groove structure, and the vertical bending Z-shaped belt conveyor is vertically slidably connected to the groove of the pitch frame. Two lifting and telescopic hydraulic cylinders are used, which are symmetrically arranged on both sides of the vertical bending Z-shaped belt conveyor, and the cylinder seat of the lifting and telescopic hydraulic cylinder is fixedly connected to the pitch frame, and the cylinder rod end of the lifting and telescopic hydraulic cylinder is hinged to the top of the vertical end of the vertical bending Z-shaped belt conveyor.

[0007] Furthermore, two lifting chutes are symmetrically provided on both side walls of the groove portion of the pitch frame, and two sliding connection structures matching the two lifting chutes are installed on both sides of the vertical section of the vertical bending Z-shaped belt conveyor.

[0008] Furthermore, the above-mentioned vertical bending Z-shaped belt conveyor includes a first-section belt frame, a second-section belt frame, a third-section belt frame and a lifting load belt, the first-section belt frame is an inverted L-shaped structure, the lower end of the first-section belt frame is hinged to the upper end of the second-section belt frame, the lower end of the second-section belt frame is hinged to one end of the horizontal third-section belt frame, the vertical section of the first-section belt frame is connected to the pitching lifting mechanism, the third-section belt frame and the second-section belt frame are connected on both sides by two first folding and telescopic hydraulic cylinders and can drive the third-section belt frame to rotate and keep it vertical and in the same direction (i.e. 90°-180 degrees), the second-section belt frame and the first-section belt frame are connected on both sides by two second folding and telescopic hydraulic cylinders and can The frame is folded to keep it perpendicular to the first section belt frame, and an electric roller is installed at the free end of the upper horizontal section of the first section belt frame, and a driven roller is installed at the free end of the horizontal section of the third section belt frame. The first section belt frame, the second section belt frame and the third section belt frame between the electric roller and the driven roller are equipped with rollers that support and lift the loading belt, and the lifting loading belt is sleeved on the electric roller and the driven roller. Multiple groups of cantilever belt back-pressure rollers are symmetrically arranged on both sides of the length direction of the lifting loading belt. The multiple groups of cantilever belt back-pressure rollers are respectively located on both sides of the back of the first section belt frame, the second section belt frame and the third section belt frame to support or press the lifting loading belt, and are located at the turning point of the front of the first section belt frame, the second section belt frame and the third section belt frame.

[0009] Furthermore, both ends of the driven roller are rotatably connected to the two sliding bearing seats, and two sliding grooves are provided on the upper and lower sides of the two sliding bearing seats. The two slide grooves are movably inserted into the two sliding columns. A horizontal U-shaped groove is provided on the side wall of the third section belt frame facing the sliding bearing seat. The side of the sliding bearing seat away from the free end of the third section belt frame is fixedly connected to the cylinder rod of the tensioning and adjusting telescopic hydraulic cylinder, and the cylinder seat of the tensioning and adjusting telescopic hydraulic cylinder is hinged to the tensioning belt hinge seat provided on the side of the third section belt frame.

[0010] Furthermore, a feed hopper is installed above the above-mentioned third section belt frame, the outlet width of the feed hopper is not greater than the width of the material storage hopper of the lifting loading belt, a frame is provided near the bottom of the feed hopper, the frame is fixedly connected by a longitudinal rod and multiple transverse rods, and a rubber baffle is provided around the feed hopper near the discharge port, and the rubber baffle can maintain elastic contact with the material storage hopper.

[0011] Furthermore, the above-mentioned strip panel is fixedly connected to both sides of one end away from the vertically bent Z-shaped belt conveyor, and the counterweight assembly includes a frame, a slide rail, a bracket and a counterweight plate. Two sets of movable sleeves are provided at the bottom of the frame, and the two sets of movable sleeves are respectively sleeved on two support tubes. The two support tubes are fixedly connected to the strip panel at set intervals. Two slide rails are used, which are fixedly connected to the bracket side by side and slidably connected to the counterweight slide groove arranged on the frame toward the length direction of the strip panel. A screw adjustment frame is fixedly connected between the two counterweight slide grooves, and the screw adjustment frame is spirally connected to an adjusting screw. The inner end of the adjusting screw is rotatably connected to the connecting seat at the bottom of the bracket, and multiple counterweight plates are placed in the bracket.

[0012] Furthermore, the above-mentioned vertical bending Z-shaped belt conveyor is provided with a demud removing device at the discharge end, and the demud removing device at the discharge end includes a striking plate, a striking shaft, a remote rod, a connecting rod and a crank. The striking plate is fixedly connected to the striking shaft, and the striking shaft is rotatably connected to the two side walls of the first section belt frame and is fixedly connected to a rocker after one end is extended. The free end of the rocker is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to one end of the crank, and the other end of the crank is fixedly connected to the driving shaft. The driving shaft is rotatably connected to the side wall of the first section belt frame and the inner end is extended into a section and is fixedly connected to a friction driving wheel. The top of the friction driving wheel abuts against the bottom of one side of the lifting loading belt, and the lifting loading belt drives the friction driving wheel to rotate, thereby driving the crank to rotate. After rotation, it drives the rocker to swing back and forth, thereby driving the striking plate to hit the upper surface of the inner side of the lower horizontal section of the lifting loading belt.

[0013] The operating method of the long and deep foundation pit vertical hoist is as follows: move the long and deep foundation pit vertical hoist to the compacted foundation or hardened road surface on one side of the deep foundation pit through the walking mechanism and ensure that the vertical bending Z-shaped belt conveyor can extend vertically into the deep foundation pit, control the rotating disk to rotate the vertical bending Z-shaped belt conveyor to the side facing the deep foundation pit, control the pitching lifting mechanism to first pitch the vertical bending Z-shaped belt conveyor to reach the vertical position, and then control the vertical bending Z-shaped belt conveyor to lift and lower, reach the set collecting position, start the vertical bending Z-shaped belt conveyor to operate, and after stable operation, send the soil excavated from the deep foundation pit to the feeding port, and send the material out of the deep foundation pit and send it away through other equipment. When the size of the deep foundation pit is less than the set value Amm, control the tensioning and adjusting telescopic hydraulic cylinder to loosen the lifting load belt, control the lifting of the first section belt frame to the highest position, and then control the second folding telescopic hydraulic cylinder to rotate the second section belt frame to keep it perpendicular to the first section belt frame, and finally control the first folding telescopic hydraulic cylinder to rotate the third section After the belt frame rotates, it is kept at the same horizontal plane with the second belt frame. The tensioning and adjusting telescopic hydraulic cylinder is controlled again to tension and lift the load belt. After tensioning, the vertical bending Z-shaped belt conveyor is started to operate. If the excavation depth is greater than the set value Bmm, where B is greater than A+C, and C is the maximum lifting height of the first belt frame, the load belt is released at this time, and the first belt frame is controlled to be lifted to the highest position. The first folding telescopic hydraulic cylinder is then controlled to rotate the third belt frame and keep it perpendicular to the second belt frame. Finally, the second folding telescopic hydraulic cylinder is controlled to rotate the second belt frame to the same vertical direction as the first belt frame, and the load belt is tensioned and lifted. After tensioning, the vertical bending Z-shaped belt conveyor is started to operate until the deep foundation pit excavation at the set position is completed. The first belt frame is controlled to be lifted to the highest position, and the pitch angle of the vertical bending Z-shaped belt conveyor is reset to the initial position through the pitch lifting mechanism. The walking mechanism is controlled to enter the next position to excavate the deep foundation pit and lift the soil.

[0014] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention uses a pitching and lifting mechanism, whose pitching function can rotate the vertically bent Z-shaped belt conveyor and keep it in a vertical position, thereby realizing the transfer of materials excavated in deep foundation pits. When not in use, the vertically bent Z-shaped belt conveyor returns to the starting position for storage, and through the lifting function, the excavation of deep foundation pits of different depths can be realized, the application range is wider, and the equipment investment cost is lower. Moreover, through the walking mechanism, it can walk at different positions, adapt to the excavation of deep foundation pits in larger and narrow spaces, and facilitate the transportation of equipment. The vertically bent Z-shaped belt conveyor and the pitching and lifting function cooperate with the walking mechanism, which can quickly move and lower the vertically bent Z-shaped belt conveyor from the lateral support gap into the deep foundation pit with lateral support, thereby realizing rapid transfer and overlap of equipment. The present invention can meet the special needs of limited space and high-drop vertical transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the installation structure of a vertical hoist for a large and deep foundation pit;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of a vertical hoist for a long and deep foundation pit;

[0017] Figure 3 The three-dimensional structural diagram of the vertical hoist for a long and deep foundation pit (without the belt);

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the vertical hoist for a long and deep foundation pit from another perspective (without the belt);

[0019] Figure 5 The side view schematic diagram of the vertical hoist for a large and deep foundation pit (without the belt);

[0020] Figure 6 This is an enlarged structural diagram of the driven roller installation location;

[0021] Figure 7 The top view of the vertical hoist for a long and deep foundation pit (without the belt);

[0022] Figure 8 This is a front view structural diagram of a vertical hoist for a large and deep foundation pit (without the belt);

[0023] Figure 9 for Figure 8 Schematic diagram of the AA section structure;

[0024] Figure 10 Schematic diagram of the three-dimensional structure of the pitch frame;

[0025] Figure 11 This is a schematic diagram of the three-dimensional structure of the tilting frame from another perspective;

[0026] Figure 12 This is a front structural diagram of the pitch frame;

[0027] Figure 13 Schematic diagram of the top view of the pitch frame;

[0028] Figure 14 It is a schematic diagram of the three-dimensional structure of the first section of the belt frame;

[0029] Figure 15 This is a three-dimensional structural diagram of the first section of the belt frame from another perspective;

[0030] Figure 16 This is a side structural diagram of the first section of the belt frame;

[0031] Figure 17This is a front structural diagram of the first section of the belt frame;

[0032] Figure 18 for Figure 17 Schematic diagram of the AA section structure;

[0033] Figure 19 This is a rear view structural diagram of the first section of the belt frame;

[0034] Figure 20 This is a schematic diagram of the top view of the first section of the belt frame;

[0035] Figure 21 This is a schematic diagram of the structure of the mud dragging device;

[0036] Figure 22 Schematic diagram of the three-dimensional structure of the first / second / third inner support frame;

[0037] Figure 23 It is a schematic diagram of the three-dimensional structure of the second section belt frame;

[0038] Figure 24 This is a schematic diagram of the three-dimensional structure of the second section belt frame from another perspective;

[0039] Figure 25 This is a front structural diagram of the second section of the belt frame;

[0040] Figure 26 This is a side structural diagram of the second section of the belt frame;

[0041] Figure 27 This is a rear structural diagram of the second section belt frame;

[0042] Figure 28 for Figure 27 Schematic diagram of the AA section structure;

[0043] Figure 29 This is a schematic diagram of the three-dimensional structure of the third section belt frame;

[0044] Figure 30 This is a schematic diagram of the three-dimensional structure of the third section belt frame from another perspective;

[0045] Figure 31 This is a side structural diagram of the third section belt frame;

[0046] Figure 32 This is a front structural diagram of the third section belt frame;

[0047] Figure 33 for Figure 32 Schematic diagram of the AA section structure;

[0048] Figure 34This is a schematic diagram of the top view of the third section belt frame;

[0049] Figure 35 This is a schematic diagram of the installation structure of the counterweight assembly from a top view;

[0050] Figure 36 Schematic diagram of the side structure of the counterweight assembly;

[0051] Figure 37 It is a front structural schematic diagram of the counterweight assembly;

[0052] Figure 38 This is a schematic diagram of the structure of the feed hopper from a bird's-eye view;

[0053] Figure 39 It is a schematic diagram of the structure of the feed hopper from the side;

[0054] Figure 40 To enhance the schematic diagram of the carrying belt structure;

[0055] Figure 41 A side view schematic diagram of the lifting load belt. DETAILED DESCRIPTION

[0056] The invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0057] Example 1: Figures 1 and 2 As shown, a vertical hoist for a long and deep foundation pit comprises a traveling mechanism 1, a rotating disc 2 and a vertical bending Z-shaped belt conveyor 3. The rotating disc 2 is mounted on the traveling mechanism 1. The rotating disc 2 is connected to the vertical bending Z-shaped belt conveyor 3 through a pitching and lifting mechanism 4 and can drive the vertical bending Z-shaped belt conveyor 3 to remain vertical. The lower horizontal section of the vertical bending Z-shaped belt conveyor 3 is a feeding port, and the upper horizontal section is a discharging port. The traveling mechanism 1 adopts a crawler traveling mechanism. An electric rotating disc 2 is mounted on the top of the frame of the crawler traveling mechanism. The rotating disc 2 The base is fixedly connected to the top of the frame of the crawler walking mechanism, and the output rotating part of the rotating disk 2 is fixedly connected to the strip panel 201, which can drive the strip panel 201 to rotate. The walking mechanism 1 walks to the top of the deep foundation pit 70 to be excavated, and this position can ensure that the vertical bending Z-shaped belt conveyor 3 is extended into the gap between two rows of adjacent horizontal supports 80. The vertical bending Z-shaped belt conveyor is controlled to pitch through the pitching and lifting mechanism to keep the vertical bending Z-shaped belt conveyor vertical, and the lifting is controlled to lift it to the set position.

[0058] Through the pitching and lifting mechanism, its pitching function can rotate the vertical bending Z-shaped belt conveyor and keep it in a vertical position, so as to realize the transportation of materials excavated in deep foundation pits. When not in use, the vertical bending Z-shaped belt conveyor returns to the starting position for storage, and through the lifting function, the excavation of deep foundation pits of different depths can be realized, the application range is wider, and the equipment investment cost is lower. Moreover, through the walking mechanism, it can walk at different positions, adapt to the excavation of deep foundation pits in larger and narrow spaces, and facilitate the transportation of equipment. The vertical bending Z-shaped belt conveyor and the pitching and lifting function cooperate with the walking mechanism, and can quickly move and lower the vertical bending Z-shaped belt conveyor from the lateral support gap into the deep foundation pit with lateral support, so as to realize the rapid transportation and overlap of equipment. The present invention can meet the special needs of limited space and high-drop vertical transportation.

[0059] Inside the foundation pit, the equipment uses a vertical lifting system to transport earthwork to the top of the pit, where it directly connects with the horizontal conveying equipment, eliminating the operational incoordination issues associated with traditional multi-device operations. This collaborative operation model not only improves operational efficiency but also reduces the number of earthwork transfers and eases construction complexity.

[0060] The multi-degree-of-freedom rotary vertical hoist, comprising travel, rotation, pitch, and lift, was designed with full consideration given to the constraints of deep foundation pit support structures. Its compact design adapts to tight workspaces, while its adjustable arm reach and rotation capabilities minimize impact on the support structure during construction. Its tracked travel mechanism further enhances the machine's maneuverability in complex terrain, ensuring stable operation even on steep slopes and soft ground.

[0061] In order to achieve the stability of the walking mechanism supporting the vertical bending Z-shaped belt conveyor, the output end of the rotating disk 2 is fixedly connected to a strip panel 201, and the strip panel 201 is fixedly connected to two lifting columns 202 at the bottom near one end of the vertical bending Z-shaped belt conveyor 3. The lifting columns 202 are hydraulic jacks. The two lifting columns 202 can rest on two supporting piers 203 on the ground. When the vertical bending Z-shaped belt conveyor is in use, it is supported on the two supporting piers by the two lifting columns, which can stabilize the center of gravity of the equipment on the side biased towards the walking mechanism. During the operation of the vertical bending Z-shaped belt conveyor 3, the instantaneous excessive force can easily cause rollover, thereby improving the stability and reliability of the equipment support and reducing the probability of equipment operation safety accidents.

[0062] In order to achieve stable pitching and lifting of the vertical bending Z-shaped belt conveyor, the pitching and lifting mechanism 4 includes a pitching frame 401, a pitching hydraulic cylinder 402 and a lifting and telescopic hydraulic cylinder 403. The back of the pitching frame 401 is hinged to one side of the output end of the rotating disk 2. The upper end of the pitching hydraulic cylinder 402 is hinged to the pitching frame 401 near the upper end, and the lower end is hinged to the other side away from the hinge of the rotating disk 2 and the pitching frame 401. The pitching frame 401 is a vertical strip groove structure. The vertical bending Z-shaped belt conveyor 3 is vertically slidably connected to the groove of the pitching frame 401. The lifting and telescopic hydraulic cylinder 403 adopts two, which are symmetrically arranged at the vertical bending On both sides of the Z-shaped belt conveyor 3, the cylinder seat of the lifting and telescopic hydraulic cylinder 403 is fixedly connected to the pitching frame 401, and the cylinder rod end of the lifting and telescopic hydraulic cylinder 403 is hinged at the top of the vertical end of the vertical bending Z-shaped belt conveyor 3. The pitching frame 401 can be controlled to remain vertical through the pitching hydraulic cylinder 402, and return to the initial position when not in use. The lifting and telescopic hydraulic cylinder can control the lifting and lowering of the vertical bending Z-shaped belt conveyor 3 to achieve the best position for feeding. The pitching hydraulic cylinder 402 and the lifting and telescopic hydraulic cylinder 403 are both equipped with two, which can achieve stable pitching support and lifting and telescoping; in order to achieve vertical bending The bent Z-shaped belt conveyor has a stable sliding connection. Two lifting slides 404 are symmetrically arranged on both sides of the inner wall of the groove portion of the pitching frame 401. Two sliding connection structures 405 matching the two lifting slides 404 are installed on both sides of the vertical section of the vertical bent Z-shaped belt conveyor 3. The groove portion structure is used for support, which is stable and reliable. The slide groove is used to cooperate with the sliding connection structure for sliding and retracting. The sliding connection is stable and reliable. The sliding connection structure 405 includes two rectangular sliding columns 406 arranged on both sides of the first section belt frame 301. The two rectangular sliding columns 406 are provided with multiple Wear-resistant strips 407, multiple wear-resistant strips 407 are evenly arranged along the length direction of the rectangular sliding column 406, and the wear-resistant strips are used to contact the lifting slide 404 to realize the sliding connection of the rectangular sliding column 406, which can reduce the contact area, reduce friction, improve telescopic stability, and avoid jamming caused by excessive friction. The two ends of the wear-resistant strips 407 are provided with slopes on the side facing the lifting slide 404 to facilitate entry and exit from the lifting slide 404. The rectangular sliding column 406 includes a channel steel and a sealing plate welded to the groove part of the channel steel, which is welded to the first section of the belt frame 301. The structure has high rigidity and strength, stable and reliable support, and is easy to manufacture.

[0063] Specifically, the pitch frame 401 includes two channel steels 40101 and a first frame 40102. The two channel steels 40101 are fixedly connected by the first frame 40102 near the bottom of the lower side, and the two lifting slides 404 provided thereon are arranged relatively. The structure is a frame structure, and the top is a U-shaped structure. While ensuring rigidity and strength, the structure is greatly lightened and the cost is lower. Two second reinforcement frames 40103 are respectively provided near the outer sides of the upper parts of the two channel steels 40101, which can ensure that when the groove part of the channel steel 40101 is used as a lifting slide, it can ensure rigidity and strength, and the lifting and supporting stability is better. The bottom of the first frame 40102 is provided with a first pitch hinge seat 2 provided on the hinged strip panel 201 near the top. 0101's second pitch hinge seat 1 40104, two pitch hinge seats 1 40105 of two articulated pitch hydraulic cylinders 402 are arranged at the upper middle position of the bottom of the two channel steels 40101, the pitch hinge seat 1 40105 is welded to the second reinforcement frame 40103, and the cylinder seat of the pitch hydraulic cylinder 402 is hinged to the pitch hinge seat 2 20102 set on the strip panel 201; specifically, the first frame 40102 includes an L-shaped cross-section side plate 40106, a vertical plate 40107 and a horizontal plate 40108, the horizontal plate 40108 is arranged with multiple vertical horizontal intervals, and is evenly welded to form a groove frame structure through three vertical plates 40107, and two channel steels 40101 are welded at both ends of the groove frame structure, L-shaped The cross-section side plates 40106 are made of multiple pieces, and each L-shaped cross-section side plate 40106 is welded between two adjacent horizontal plates 40108 and welded to the bottom of the channel steel 40101 and the outer side of the vertical plate 40107 on the side. The frame structure can meet the requirements of fixed connection of the channel steel; specifically, upward extension plates 40109 are provided at both ends of each horizontal plate 40108, and the extension plates 40109 are provided with welding side grooves 40110. The welding side grooves 40109 are welded to the bottom, top and back of the channel steel 40101. The frame welding of this structure is convenient, and the welding of the step structure has better welding stability, more reliable connection and better support stability. The welding step 40111 provided on the lowest extension plate 40109 is connected to the channel steel 40101. 1 The bottom and back are welded, leaving a length of the top surface of the channel steel to place the support pulley 30208; the bottom of the channel steel 40101 is also provided with a channel steel reinforcement rib 40115, which plays the role of reinforcing the channel steel, improving the rigidity and strength of the channel steel, and providing better support stability; the second reinforcement skeleton 40103 includes a reinforcement top plate 40112, a reinforcement bottom plate 40113 and a plurality of reinforcement connecting plates 40114, the reinforcement top plate 40112 overlaps the top of the channel steel and is fixed by welding, the reinforcement bottom plate 40113 is welded to the bottom of the reinforcement top plate 40112 through a plurality of reinforcement connecting plates 40114, and the reinforcement bottom plate 40113 and the plurality of reinforcement connecting plates 40114 are welded to the outside of the channel steel 40101. This structure can play the role of reinforcing the channel steel.

[0064] Among them, the vertical bending Z-shaped belt conveyor 3 includes a first-section belt frame 301, a second-section belt frame 302, a third-section belt frame 303 and a lifting load belt 304. The first-section belt frame 301 is an inverted L-shaped structure, the lower end of which is hinged to the upper end of the second-section belt frame 302, and the lower end of the second-section belt frame 302 is hinged to one end of the horizontal third-section belt frame 303. The vertical section of the first-section belt frame 301 is connected to the pitching lifting mechanism 4, and the third-section belt frame 303 and the second-section belt frame 302 are connected on both sides by two first folding and telescopic hydraulic cylinders 305 and can drive the third-section belt frame 303 to rotate and keep it vertical and in the same direction (i.e. 90°-180°) with the second-section belt frame 302. The first section belt frame 302 is connected to the first section belt frame 301 on both sides by two second folding and telescopic hydraulic cylinders 317, and the second section belt frame 302 can be folded to be perpendicular to the first section belt frame 301. The free end of the upper horizontal section of the first section belt frame 301 is installed with an electric roller 306, and the free end of the horizontal section of the third section belt frame 303 is installed with a driven roller 307. The first section belt frame 301, the second section belt frame 302 and the third section belt frame 303 between the electric roller 306 and the driven roller 307 are installed with rollers 308 that support and lift the loading belt 304. The lifting loading belt 304 is sleeved on the electric roller 306 and the driven roller 307. The lifting loading belt 304 is aligned on both sides in the length direction. It is said that there are multiple sets of cantilever belt back-pressure rollers 314, which are respectively located on both sides of the back of the first belt frame 301, the second belt frame 302 and the third belt frame 303 to support or press the loading belt 304, and are located at the turning point of the front of the first belt frame 301, the second belt frame 302 and the third belt frame 303. The principle of use is: control the vertical bending Z-shaped belt conveyor to rise and fall, reach the set collecting position, start the vertical bending Z-shaped belt conveyor to operate, and after stable operation, send the soil excavated from the deep foundation pit to the feed port, and send the material out of the deep foundation pit and send it away through other equipment. When the size of the deep foundation pit is less than the set value Amm, control the tensioning and adjusting telescopic hydraulic cylinder to loosen. Lift the loading belt, control the lifting of the first section of the belt frame to the highest position, then control the second folding telescopic hydraulic cylinder to rotate the second section of the belt frame to keep it perpendicular to the first section of the belt frame, finally control the first folding telescopic hydraulic cylinder to rotate the third section of the belt frame and keep it at the same horizontal plane with the second section of the belt frame, control the tensioning and adjusting telescopic hydraulic cylinder to tension and lift the loading belt again, and start the vertical bending Z-shaped belt conveyor to operate after tensioning. If the excavation depth is greater than the set value Bmm, where B is greater than A+C, and C is the maximum lifting height of the first section of the belt frame, then release the lifting loading belt, control the lifting of the first section of the belt frame to the highest position, and then control the first folding telescopic hydraulic cylinder to rotate the third section of the belt frame and keep it perpendicular to the second section of the belt frame.Finally, the second folding and telescopic hydraulic cylinder is controlled to rotate the second section of the belt frame to the same vertical direction as the first section, tightening and lifting the load belt. After tightening, the vertical bending Z-shaped belt conveyor is started and operated until the deep foundation pit at the set position is excavated. The first section of the belt frame is controlled to rise and fall to the highest position, and the pitch angle of the vertical bending Z-shaped belt conveyor is reset to the initial position via the pitch lifting mechanism. The traveling mechanism is controlled to move to the next position to excavate the deep foundation pit and lift the soil.

[0065] The vertically bent Z-shaped belt conveyor of the three-section frame can adapt to a wider range of high-drop excavation and transportation. It is easy and fast to control and can make real-time adjustments.

[0066] In order to facilitate the rapid conversion of the belt conveyor in different states, the two ends of the driven roller 307 are rotatably connected to the two sliding bearing seats 315. Two sliding grooves 309 are provided on the upper and lower sides of the two sliding bearing seats 315. The two sliding grooves 309 are movably inserted into the two sliding posts 310. A horizontal U-shaped groove 30305 is provided on the side wall of the third section belt frame 303 opposite the sliding bearing seat 315. The sliding bearing seat 315 is fixedly connected to the cylinder rod of the tensioning and adjusting telescopic hydraulic cylinder 311 on the side away from the free end of the third section belt frame 303. The cylinder seat of the tensioning and adjusting telescopic hydraulic cylinder 311 is hinged to the third section belt frame On the tensioning belt hinge seat 312 set on the side of 303, a tensioning and adjusting telescopic hydraulic cylinder is used to control the position of the driven roller 307, which can realize the tensioning and loosening of the lifting load belt. Before the conversion (such as during the rotation of the first belt frame and the second belt frame), it is necessary to loosen the lifting load belt first. After the conversion is completed, it is tensioned again. This method can avoid the first belt frame and the second belt frame being damaged by the force during the rotation process, play a protective role, and also reduce the friction force of the rotating hinge point of the first belt frame and the second belt frame after the force is applied, making it difficult to rotate around the hinge point, thereby reducing energy consumption.

[0067] The lifting and loading belt 304 includes a belt body 3041 and a material storage bucket 3042. A circle of material storage buckets 3042 is evenly arranged on the outer surface of the belt body 3042. Skirt baffles 3043 are set on both sides of the circle of material storage buckets 3042. The material storage buckets 3042 and the skirt baffles 3043 form a material storage trough. During the lifting process, the material storage trough moves the material upward, and when it reaches the free end and moves downward, it automatically falls. The belt body 3041 is 15-20 cm wider than the skirt baffle 3043 on one side to form an extrusion portion 3044; the inner flat surface of the lifting and loading belt 304 fits the roller, and the extrusion portions on both sides can fit the cantilever belt back pressure roller 314 to realize the belt limiting, so that the lifting and loading belt 304 can move smoothly under the drive of the powered electric roller, and the material is smoothly lifted from the foundation pit to the top of the foundation pit for transfer.

[0068] The first section of the belt frame 301 of the inverted L-shaped structure includes an inverted L-shaped first wall panel 30101 and a first inner support frame 30102. The first wall panel 30101 is made of two pieces. A plurality of first inner support frames 30102 are fixedly connected between the two first wall panels 30101 to form a frame structure of the first section of the belt frame 301. The plurality of first inner support frames 30102 are arranged along the length of the L-shaped path of the first wall panels 30101. A first reinforcement plate 30103 is provided on the outer side of the horizontal free ends of the tops of the two first wall panels 30101 to form an end reinforcement structure. The end reinforcement structure is provided with a horizontal first U-shaped notch 30104. The first U-shaped notch 30104 is provided on the outer side of the horizontal free ends of the two first wall panels 30101 to form an end reinforcement structure. The outer side is welded with a bearing support 30105 for mounting the electric roller 306. The bearing support 30105 is provided with a horizontal bar-shaped through hole 30119 for mounting the electric roller bearing seat 316 through a bolt. A vertical adjustment fixing plate 30106 is provided on the bearing support 30105 away from the mouth of the U-shaped notch 30104. The electric roller position adjustment screw 30107 is spirally connected to the vertical adjustment fixing plate 30106. One end of the electric roller position adjustment screw 30107 abuts against the bottom connecting plate of the electric roller bearing seat 316. When the position of the electric roller needs to be adjusted, the mounting bolt is loosened and the electric roller position adjustment screw is rotated to push the electric roller to move. The movable roller is moved toward the end and adjusted to a suitable position, and the bearing seat of the electric roller is locked on the bearing support by bolts, so that the position adjustment of the electric roller can be realized. The position adjustment is convenient and quick, thereby realizing the adjustment of the belt tension, improving the adaptability and application range of the equipment, and facilitating installation. The mouth of the U-shaped notch 30104 is fixedly connected with an end baffle 30108, and the wall panel 30101 is provided with two first edge baffles 30109 on both sides along the length direction. A first wall panel reinforcement rib 30110 arranged at intervals is provided between the two first edge baffles 30109. The wall panel reinforcement rib cooperates with the first edge baffle structure integrated with the first wall panel to reinforce The function of the wall panels makes the wall panels more rigid and strong, and has better support stability; two top telescopic articulated seats 30111 connected to the lifting and telescopic hydraulic cylinder 403 are provided near the turning point in the top horizontal section between the two first wall panels 30101, and a telescopic push shaft 30112 is fixedly connected between the two top telescopic articulated seats 30111. The top telescopic articulated seats 30111 are provided with a smooth arc transition toward the vertical section, and a reinforcing rib plate is provided on the outside of the top telescopic articulated seats 30111. The top telescopic articulated seats 30111 of this structure have stable and reliable support, and are connected as a whole with a telescopic push shaft, which has better telescopic stability and also strengthens the stability of the first belt rack;The lower ends of the two first wall panels 30101 are provided with first hinge holes 30113 for hingedly connecting the second section of the belt frame 302. The outer side of the first hinge hole 30112 is provided with a first scattering rib 30114 for reinforcing the first hinge hole. A second folding hinged double-ear seat 30115 for hingedly connecting the tail end of the cylinder seat of the second folding telescopic hydraulic cylinder 317 is provided on the right side of the first wall panel 30101 near the lower end. The second folding hinged double-ear seat 30115 faces downward. The outer ears of the second folding hinged double-ear seat 30115 are bent, and extend to the wall panel rib to form a reinforcing wall panel, which can improve the stability of the second folding hinged double-ear seat 30115; the first inner support frame 30102 includes two upper and lower support beams 30116 and three support vertical beams 30117 uniformly fixedly connected between the two support beams 30116, and the four ends of the two support beams are provided with four fixedly connected to the first wall panel 30101. The flange plate 30118 is connected. The internal support frame of this structure has a simple structure, stable support, and reliable connection. The rollers 308 are arranged at the upper horizontal section, the right vertical section, and the outer side of the turning end of the first section belt frame 301 (i.e., located outside the first internal support frame). The four rollers 308 are also arranged on the left side of the lower end of the vertical section of the first section belt frame 301 to form an arc structure. After the lifting load belt 304 at the second section belt frame 302 is bent, it can closely adhere to the inner surface of the non-conveying side of the lifting load belt 304. The cantilever belt back pressure rollers 314 are arranged at the lower horizontal section, the left vertical section, and the outer side of the turning end of the first section belt frame 301. The three groups of cantilever belt back pressure rollers 314 are symmetrically arranged on the right side of the lower end of the vertical section of the first section belt frame 301 to form an arc structure. They can reversely and closely adhere to the outer surface of the conveying side of the lifting load belt 304 at the second section belt frame 302 after the turn.

[0069] The second section belt frame 302 includes a second wall panel 30201 and a second inner support frame 30202. The second inner support frame 30202 has the same structure as the first inner support frame 30102. The second wall panel 30201 is made of two pieces. A plurality of second inner support frames 30202 are used to fix the two second wall panels 30201 in the length direction to form a frame structure of the second section belt frame 302. A second reinforcement plate 30203 is provided on the outer side of the top of the two second wall panels 30201 to form a bullet-shaped end reinforcement structure. The end reinforcement structure is provided with a second hinge hole 30204 hinged to the first hinge hole 30112. The lower ends of the two second wall panels 30201 are provided with a hinged third belt frame. The third hinge hole 30205 of 303 is provided with a second scattering rib 30206 on the outside of the third hinge hole 30205 to reinforce the third hinge hole. The second wall panel 30201 is provided with a cylinder rod of the second folding and telescopic hydraulic cylinder 317 and a third folding hinged double-ear seat 30207 at the tail end of the cylinder seat of the first folding and telescopic hydraulic cylinder 305 on the right side near the lower end. The third folding hinged double-ear seat 30207 is bent downward, and the outer ears of the third folding hinged double-ear seat 30207 extend to the wall panel rib to form a reinforced wall panel. The outer side of the reinforced wall panel is rotatably connected to a support pulley 30208, and the support pulley 30208 is vertically suspended on the second belt frame 302 The support roller 308 is arranged on the right side of the vertical section of the second belt frame 302 (that is, outside the second inner support frame). The support roller 308 is provided with four and five additional support rollers respectively arranged on the left side of the lower end and the left side of the upper end of the vertical section of the second belt frame 302 to form two arc structures. The two arc structures can make the lifting load belt 304 of the curved second belt frame 302 or the curved third belt frame 303 close to the inner surface of the non-conveying side of the lifting load belt 304; the cantilever belt back pressure roller 314 is arranged on the left side of the vertical section of the second belt frame 302, and the cantilever belt back pressure roller 314 adopts two groups and three groups. The second belt frame 302 is symmetrically arranged on the right side of the upper and lower ends of the vertical section to form an arc structure, which can lift the loading belt 304 at the second belt frame 302 and the third belt frame 303 after turning, and lift the loading belt 304 in the opposite direction to the outer surface of the conveying side of the loading belt 304; the second wall panel 30201 is provided with two second edge baffles 30209 on both sides along the length direction, and a second wall panel reinforcement rib 30210 is arranged at intervals between the two second edge baffles 30209. The wall panel reinforcement rib cooperates with the second edge baffle structure integrated with the second wall panel to reinforce the wall panel, making the wall panel more rigid and strong, and having better support stability.

[0070] The third section belt frame 303 includes a third wall panel 30301 and a third inner support frame 30302. The third inner support frame 30302 has the same structure as the first inner support frame 30102. The third wall panel 30301 is made of two pieces. A plurality of third inner support frames 30302 are fixedly connected in the length direction between the two third wall panels 30301 to form a frame structure of the third section belt frame 303. A third reinforcement plate 30303 is provided on the outer side of the left end of the two third wall panels 30301 to form a bullet-shaped end reinforcement structure. The end reinforcement structure is provided with a fourth hinged third hinge hole 30205. Hinge hole 30304, a horizontal U-shaped groove 30305 is set at the right end of the two third wall panels 30301, and two sliding columns 310 are set on the upper and lower sides of the U-shaped groove 30305. The sliding column 310 slides into the sliding groove 309 at the upper and lower ends of the sliding bearing seat 315. The sliding bearing seat 315 adopts two, which are rotatably connected to the driven roller 307. The left end of the sliding bearing seat 315 is installed with a tensioning and adjusting telescopic hydraulic cylinder 311 that drives it to move horizontally. A limiting baffle 30306 is set at the right end of the U-shaped groove 30305, which can reinforce the U-shaped groove and prevent the sliding bearing seat 315 from falling off. The support rollers 308 are also arranged on the upper side of the third section belt frame 303 (that is, above the third inner support frame). The support rollers 308 are provided with five additional rollers arranged on the lower side of the third section belt frame 303 near the left end to form an arc structure. The arc structure can closely adhere to the inner surface of the non-conveying side of the lifting load belt 304 at the curved third section belt frame 303; the cantilever belt back pressure rollers 314 are also symmetrically arranged on both sides of the bottom length direction of the third section belt frame 303. The cantilever belt back pressure rollers 314 are symmetrically arranged in two groups on the upper side of the left end of the third section belt frame 303 to form an arc structure. The arc structure can lift the load at the turning third section belt frame 303 The belt 304 can reversely cling to the outer surface of one side of the lifting loading belt 304 for conveying; the third wall panel 30301 is provided with two third edge baffles 30307 along the edges on both sides in the length direction, and the two third edge baffles 30307 are provided with spaced third wall panel reinforcement ribs 30308. The wall panel reinforcement ribs cooperate with the third edge baffle structure integrated with the third wall panel to play the role of reinforcing the wall panel, so that the wall panel has higher rigidity and strength, and better support stability; the left end of the third wall panel is provided near the upper part with a fourth folding articulated double-ear seat 30309 which is hinged to the first folding telescopic hydraulic cylinder 305, and the fourth folding articulated double-ear seat 30309 is bent to the left.

[0071] In order to facilitate the feeding of excavated soil into the lifting load belt and avoid feed blockage, a feed hopper 313 is installed above the third section belt frame 303. The outlet width of the feed hopper 313 is not greater than the width of the material storage hopper 3042 of the lifting load belt 304. The width limitation prevents the feed from completely entering the gathering place of the lifting load belt to avoid spillage and affecting the operation of the belt. A skeleton 3131 is provided near the bottom of the feed hopper 313. The skeleton 3131 is fixedly connected by a longitudinal rod and multiple transverse rods. A longitudinal rod and multiple transverse rods constitute a skeleton installed at the feed hopper. The fed soil can be evenly sprinkled onto the belt under the loosening effect of the skeleton, which is conducive to discharging and avoids clogging the feed hopper outlet. The feeding hopper 313 is provided with a rubber baffle 3132 near the discharge port, and the rubber baffle 3132 can maintain elastic contact with the material storage bucket 3042. The elastic contact rubber baffle 3132 can make the fed soil fall completely into the belt, reducing the probability of side leakage and reducing the side leakage of soil falling onto the belt roller or electric equipment to affect the operation of the equipment, thereby improving the operation stability and safety of the belt equipment; the side wall of the feeding hopper 313 is provided with an electromagnetic vibrator 3133, which can make the material fall more smoothly and enter the belt feeding place. A spray pipe is set around the top of the hopper 313 to perform dust reduction treatment when the dust is too large; the feed hopper 313 includes two first wall panels 3134 in the front and rear directions and two second wall panels 3135 in the left and right directions. 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 hopper bottom plate 3136. A material leakage port of the same size as the lower end of the open structure is opened in the middle of the hopper bottom plate 3136. A first reinforcing rib plate 3137 and a second reinforcing rib plate 3138 are respectively provided between the hopper bottom plate 3136 and the first wall panel 3134 and the second wall panel 3135. 138. The tops of the first wall panels 3134 and the second wall panels 3135 are bent outwards to form short horizontal panels. The short horizontal panels serve to reinforce the wall panels on the one hand and facilitate the installation of the dust suppression pipe for the spray on the other hand. The bottoms of the first wall panels 3134 and the second wall panels 3135 are bent outwards to facilitate welding with the hopper bottom plate, thereby improving the reliability of the connection. The first reinforcing ribs 3137 and the second reinforcing ribs 3138 are provided with weight-reducing holes, which can reduce the weight while ensuring the rigidity and strength. The front and rear sides of the hopper bottom plate 3136 are respectively provided with bolt holes connected to the top of the third belt frame 303. The bolt holes are strip-shaped through holes in the front-to-back direction, which facilitate the adjustment of the front-to-back position of the feed hopper, and the adjustment is quick and easy.

[0072] In order to ensure the stability and safety of the walking mechanism during the operation of the equipment, two sets of counterweight components 5 are fixedly connected on both sides of the strip panel 201 away from one end of the vertical bending Z-shaped belt conveyor 3. The width between the two sets of counterweight components 5 is greater than the width of the corresponding position when the vertical bending Z-shaped belt conveyor 3 is stored in the initial position. By installing symmetrical counterweight components, the equipment can be balanced to avoid the risk of the walking mechanism tipping over due to excessive force on this side during the vertical operation of the vertical bending Z-shaped belt conveyor, thereby improving the stability and reliability of the equipment operation. The weight of the counterweight component 5 can meet the requirement that the center of gravity of the entire equipment is offset after the vertical bending Z-shaped belt conveyor is kept vertical. The counterweight assembly 5 is located between the two tracks of the crawler walking mechanism and the center of gravity is biased to one side of the counterweight assembly at the center of the two tracks. The counterweight assembly 5 includes a skeleton 501, a slide rail 502, a bracket 503 and a counterweight plate 504. Two sets of movable sleeves 505 are provided at the bottom of the skeleton 501. The two sets of movable sleeves 505 are respectively sleeved on two support tubes 506 and locked with sleeve set screws 517. The two support tubes 506 are fixedly connected to the fixed seat 516 fixedly connected to the bottom of the strip panel 201 at a set interval. Two slide rails 502 are used, which are fixedly connected to the bracket 503 side by side and slidably connected to the skeleton 501 and arranged in the length direction of the strip panel 201. The counterweight chute 507 is fixedly connected with a screw adjustment frame 508 between the two counterweight chute 507, and the screw adjustment frame 508 is spirally connected with an adjusting screw 509. The inner end of the adjusting screw 509 is rotatably connected to the connecting seat 510 at the bottom of the bracket 503. A plurality of counterweight plates 504 are placed in the bracket 503. This structure can adjust the position of the counterweight plates in the bracket by rotating the adjusting screw, thereby adjusting the position of the entire center of gravity, improving the stability of the equipment, and making the adjustment convenient and fast. The connection is reliable and stable, and the installation is convenient and easy. The bracket 503 includes a base plate 510, an angle steel 511 and a locking screw 512. The four corners of the base plate 510 are vertically fixed Four vertical angle steels 511 are connected and the grooves of the four angle steels 511 form a rectangular frame. The counterweight plate 504 is placed in the limit frame. The lower end of the locking screw 512 is fixedly connected to the middle of the base plate 510. A through hole 513 is provided in the middle of each counterweight plate 504. The locking screw 512 passes through the through hole 513 and is locked with the counterweight plate locking nut 514. The bracket structure facilitates the rapid and stable installation of the counterweight plate, and is also convenient for adding or reducing different counterweights according to needs. The assembly and disassembly of the counterweight plate is convenient and easy. A pressure plate 515 is provided between the counterweight plate locking nut 514 and the counterweight plate 504, which can evenly load the force on the counterweight plate 504 and improve the locking reliability.

[0073] During the conveying process, the attachment and residue of soil may cause wear on the conveyor belt and increase the running resistance. For this reason, the equipment is equipped with an efficient belt discharge end demuding device, which can automatically beat and demud the soil adhering to the belt and the storage hopper to ensure that it is always clean, thereby extending the service life of the conveyor belt and reducing maintenance costs. In order to achieve the removal of the soil adhering to the belt, the vertical bending Z-shaped belt conveyor 3 is provided with a discharge end demuding device 6. The discharge end demuding device 6 includes a striking plate 601, a striking shaft 602, a remote rod 603, a connecting rod 604 and a crank 605. The striking plate 601 is fixedly connected to the striking shaft 602. The striking shaft 602 is rotatably connected to the two side walls of the first section belt frame 301 and one end is extended and fixedly connected It is connected to a rocker 603, the free end of which is hinged to one end of a connecting rod 604, the other end of which is hinged to one end of a crank 605, and the other end of the crank 605 is fixedly connected to a drive shaft 606. The drive shaft 606 is rotatably connected to the side wall of the first section belt frame 301 and the inner end is extended into a section and is fixedly connected to a friction drive wheel 607. The top of the friction drive wheel 607 is against the bottom of one side of the lifting load belt 304. The lifting load belt 304 drives the friction drive wheel 607 to rotate, and then drives the crank 605 to rotate. After the rotation, the rocker 603 is driven to swing back and forth, and then the striking plate 601 is driven to strike the bottom of the lifting load belt 304. The upper surface of the inner side of the horizontal section hits the belt through the striking plate 601 under the cyclic drive of the crank rocker mechanism, which can realize the rapid shedding of the soil adhered to the belt hopper, and there is no need to set up an additional power mechanism. The friction drive wheel is driven to rotate by the friction of the belt to realize the input of power of the crank connecting rod mechanism, reduce energy consumption, equipment layout of the motor and the transmission, reduce occupied space and equipment cost, and a plurality of striking plates 601 are set, which are evenly arranged along the length direction of the striking shaft 602, with a number of 2-5. The striking plate 601 includes a lower convex spoon-shaped portion 608 and a connecting rod 609 fixedly connected to the lower convex spoon-shaped portion 608. The connecting rod 609 is connected to it by The welded connecting sleeve 610 is fixedly connected to the striking shaft 602. The connecting sleeve 610 is sleeved on the striking shaft 602 and locked by a set screw 611. The lower convex spoon-shaped portion 608 can achieve greater instantaneous momentum of striking and better striking effect. The structure is stable in force and has a longer service life. The connecting sleeve and the set screw are used to connect the striking plate and the striking shaft. The axial position and the circumferential position of the four-wire striking plate around the shaft can be quickly adjusted to achieve the best position and angle adjustment, so as to achieve the best striking effect without affecting the use of the belt. A counterweight block 612 is provided on the connecting rod 609 to increase the instantaneous power of striking and achieve a better striking effect.Two squeezing rollers 613 are installed above the friction driving wheel 607. The two squeezing rollers 613 are fixedly connected to the side walls of the first belt frame 301 through a connecting shaft that is rotatably connected thereto. The squeezing rollers 613 are rotatably connected to the connecting shaft. The squeezing rollers 613 tightly fit the squeezing portions 3044 on both sides of the lifting load belt 304 onto the friction driving wheel 607. The provision of the squeezing rollers can ensure that the squeezing portions 3044 on both sides of the lifting load belt 304 can fit tightly onto the friction driving wheel 607, thereby improving the rotational stability of the friction rollers. Two friction driving wheels 607 are symmetrically arranged on both sides of the first belt frame 301 and are connected to the striking shaft 602 through a crank remote lever mechanism. Symmetrical driving and striking ensure stable and reliable striking, with better striking effect and better belt dragging effect. Below the extrusion portion 3044 on both sides of the striking plate 601 that strikes the lifting load belt 304, two desludging auxiliary reverse squeezing rollers 614 are provided in contact with the extrusion portion 3044. The two desludging auxiliary reverse squeezing rollers 614 are fixedly connected to the side wall of the first belt frame 301 via a connecting shaft rotatably connected thereto. They are arranged symmetrically with respect to the striking point. The provision of the two desludging auxiliary reverse squeezing rollers 614 ensures that there are support points on both sides of the lifting load belt 304 during the striking process, avoiding a reduction in instantaneous momentum due to excessive buffering, improving the striking effect, and achieving better desludging effect, especially for sticky mud in the storage hopper.

[0074] The vertical lifting mechanism of embodiment 2 is as follows: the vertical lifting mechanism of the deep foundation pit is moved to the compacted foundation or hardened road surface on one side of the deep foundation pit by the walking mechanism, and the vertical bending Z-shaped belt conveyor is ensured to be able to vertically extend into the deep foundation pit, and the rotating disk is controlled to rotate the vertical bending Z-shaped belt conveyor to one side of the deep foundation pit, and the pitching lifting mechanism is controlled to first pitch the vertical bending Z-shaped belt conveyor to reach the vertical position, and then the vertical bending Z-shaped belt conveyor is controlled to lift and lower, reach the set collecting position, and start the vertical bending Z-shaped belt conveyor to operate. After the operation is stable, the soil excavated from the deep foundation pit is sent to the feeding port, and the material is sent to the outside of the deep foundation pit and sent away by other equipment. When the size of the deep foundation pit is less than the set value Amm, the tensioning and adjusting telescopic hydraulic cylinder is controlled to loosen the lifting belt, and the first section belt frame is controlled to be lifted to the highest position, and then the second folding telescopic hydraulic cylinder is controlled to rotate the second section belt frame to keep it vertical with the first section belt frame. Finally, the first folding telescopic hydraulic cylinder is controlled to lift the second section belt frame After the three-section belt frame rotates, it is kept at the same horizontal plane as the second-section belt frame. The tensioning and adjusting telescopic hydraulic cylinder is controlled again to tension and lift the load belt. After tensioning, the vertical bending Z-shaped belt conveyor is started to operate. If the excavation depth is greater than the set value Bmm, where B is greater than A+C and C is the maximum lifting height of the first-section belt frame, the load belt is released and the first-section belt frame is controlled to be lifted to the highest position. The first folding telescopic hydraulic cylinder is then controlled to rotate the third-section belt frame and keep it perpendicular to the second-section belt frame. Finally, the second folding telescopic hydraulic cylinder is controlled to rotate the second-section belt frame to the same vertical direction as the first-section belt frame, tensioning and lifting the load belt. After tensioning, the vertical bending Z-shaped belt conveyor is started to operate until the deep foundation pit excavation at the set position is completed. The first-section belt frame is controlled to be lifted to the highest position, and the pitch angle of the vertical bending Z-shaped belt conveyor is reset to the initial position through the pitch lifting mechanism. The walking mechanism is controlled to enter the next position to excavate the deep foundation pit and lift the soil.

[0075] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A vertical hoist for a large and deep foundation pit, characterized by: The utility model comprises a traveling mechanism (1), a rotating disk (2) and a vertical bending Z-shaped belt conveyor (3), wherein the rotating disk (2) is installed on the traveling mechanism (1), the rotating disk (2) is connected to the vertical bending Z-shaped belt conveyor (3) through a pitching lifting mechanism (4) and can drive the vertical bending Z-shaped belt conveyor (3) to remain vertical, and the lower end horizontal section of the vertical bending Z-shaped belt conveyor (3) is a material inlet, and the upper end horizontal section is a material outlet.

2. The vertical hoist for a long and deep foundation pit according to claim 1, characterized in that: The output end of the rotating disk (2) is fixedly connected to a strip panel (201), and the bottom of the strip panel (201) close to one end of the vertically bent Z-shaped belt conveyor (3) is fixedly connected to two lifting columns (202), and the two lifting columns (202) can be supported on two supporting piers on the ground.

3. The vertical hoist for a long and deep foundation pit according to claim 1, characterized in that: The pitching lifting mechanism (4) comprises a pitching frame (401), a pitching hydraulic cylinder (402) and a lifting and telescopic hydraulic cylinder (403). The back of the pitching frame (401) is hinged to one side of the output end of the rotating disk (2). The upper end of the pitching hydraulic cylinder (402) is hinged to the pitching frame (401) near the upper end, and the lower end is hinged to the other side away from the hinge between the rotating disk (2) and the pitching frame (401). The pitching frame (401) is a vertical strip groove structure. The vertical bending Z-shaped belt conveyor (3) is vertically slidably connected in the groove of the pitching frame (401). Two lifting and telescopic hydraulic cylinders (403) are symmetrically arranged on both sides of the vertical bending Z-shaped belt conveyor (3). The cylinder bases of the lifting and telescopic hydraulic cylinders (403) are fixedly connected to the pitching frame (401). The cylinder rod ends of the lifting and telescopic hydraulic cylinders (403) are hinged to the top of the vertical end of the vertical bending Z-shaped belt conveyor (3).

4. The vertical hoist for a long and deep foundation pit according to claim 3, characterized in that: Two lifting chutes (404) are symmetrically provided on both side walls of the groove portion of the pitching frame (401), and two sliding connection structures (405) matching the two lifting chutes (404) are installed on both sides of the vertical section of the vertical bending Z-shaped belt conveyor (3).

5. The vertical hoist for a long and deep foundation pit according to claim 1, characterized in that: The vertical bending Z-shaped belt conveyor (3) comprises a first section belt frame (301), a second section belt frame (302), a third section belt frame (303) and a lifting load belt (304), wherein the first section belt frame (301) is an inverted L-shaped structure, the lower end of which is hinged to the upper end of the second section belt frame (302), the lower end of the second section belt frame (302) is hinged to one end of the horizontal third section belt frame (303), the vertical section of the first section belt frame (301) is connected to the pitch lifting mechanism (4), and the third section belt frame (303) is connected to the pitch lifting mechanism (4). The two sides between the frame (303) and the second section belt frame (302) are connected by two first folding and telescopic hydraulic cylinders (305) and can drive the third section belt frame (303) to rotate and keep it perpendicular and in the same direction (i.e. 90°-180 degrees) with the second section belt frame (302). The two sides between the second section belt frame (302) and the first section belt frame (301) are connected by two second folding and telescopic hydraulic cylinders (317) and can fold the second section belt frame (302) to the first section belt frame (301). Keeping vertical, the free end of the upper horizontal section of the first belt frame (301) is installed with an electric roller (306), the free end of the horizontal section of the third belt frame (303) is installed with a driven roller (307), the first belt frame (301), the second belt frame (302) and the third belt frame (303) between the electric roller (306) and the driven roller (307) are installed with rollers (308) supporting the lifting load belt (304), and the lifting load belt (304) is sleeved on the electric roller (306) ) and the driven roller (307), a plurality of groups of cantilever belt back pressure rollers (314) are symmetrically arranged on both sides of the length direction of the lifting load belt (304), and the plurality of groups of cantilever belt back pressure rollers (314) are respectively located on both sides of the back of the first section belt frame (301), the second section belt frame (302) and the third section belt frame (303) to support or press the lifting load belt (304), and are located at the turning points of the front of the first section belt frame (301), the second section belt frame (302) and the third section belt frame (303).

6. The vertical hoist for a long and deep foundation pit according to claim 5, characterized in that: The two ends of the driven roller (307) are rotatably connected to the two sliding bearing seats (315). Two slide grooves (309) are provided on the upper and lower sides of the two sliding bearing seats (315). The two slide grooves (309) are movably inserted into the two slide posts (310). A horizontal U-shaped groove (30305) is provided on the side wall of the third section belt frame (303) facing the sliding bearing seat (315). The side of the free end of the sliding bearing seat (315) away from the third section belt frame (303) is fixedly connected to the cylinder rod of the tensioning and adjusting telescopic hydraulic cylinder (311). The cylinder seat of the tensioning and adjusting telescopic hydraulic cylinder (311) is hinged to the tensioning belt hinge seat (312) provided on the side of the third section belt frame (303).

7. The vertical hoist for a long and deep foundation pit according to claim 5, characterized in that: A feed hopper (313) is installed above the third section belt frame (303), the outlet width of the feed hopper (313) is no greater than the width of the material storage hopper (3042) of the lifting loading belt (304), a skeleton (3131) is provided near the bottom of the feed hopper (313), the skeleton (3131) is fixedly connected by a longitudinal rod and a plurality of transverse rods, and a rubber baffle (3132) is provided around the feed hopper (313) near the discharge port, and the rubber baffle (3132) can maintain elastic contact with the material storage hopper (3042).

8. The vertical hoist for a long and deep foundation pit according to claim 2, characterized in that: The strip panel (201) is fixedly connected to a counterweight assembly (5) on both sides of one end away from the vertical bending Z-shaped belt conveyor (3). The counterweight assembly (5) includes a frame (501), a slide rail (502), a bracket (503) and a counterweight plate (504). Two sets of movable sleeves (505) are provided at the bottom of the frame (501). The two sets of movable sleeves (505) are respectively sleeved on two support tubes (506). The two support tubes (506) are fixedly connected to the strip panel (201) at a set interval. The slide rail (502) is Two counterweight chutes (507) are fixedly connected to the bracket (503) side by side and slidably connected to the frame (501) and arranged in the length direction of the strip panel (201). A screw adjustment frame (508) is fixedly connected between the two counterweight chutes (507). The screw adjustment frame (508) is spirally connected to an adjusting screw (509). The inner end of the adjusting screw (509) is rotatably connected to a connecting seat (510) at the bottom of the bracket (503). A plurality of counterweight plates (504) are placed in the bracket (503).

9. The vertical hoist for a long and deep foundation pit according to claim 5, characterized in that: The vertically bent Z-shaped belt conveyor (3) is provided with a discharge end desludging device (6), which comprises a striking plate (601), a striking shaft (602), a remote rod (603), a connecting rod (604) and a crank (605), wherein the striking plate (601) is fixedly connected to the striking shaft (602), the striking shaft (602) is rotatably connected to the two side walls of the first section belt frame (301) and one end thereof is extended and fixedly connected to a rocker (603), the free end of the rocker (603) is hinged to one end of the connecting rod (604), the other end of the connecting rod (604) is hinged to one end of the crank (605), and the crank (605) is connected to the connecting rod (604). The other end of the handle (605) is fixedly connected to the drive shaft (606), and the drive shaft (606) is rotatably connected to the side wall of the first section belt frame (301) and the inner end thereof extends into a section and is fixedly connected to a friction drive wheel (607). The top of the friction drive wheel (607) abuts against the bottom of one side of the lifting load belt (304). The lifting load belt (304) drives the friction drive wheel (607) to rotate, thereby driving the crank (605) to rotate. After the rotation, the rocker (603) is driven to swing back and forth, thereby driving the striking plate (601) to strike the upper surface of the inner side of the lower horizontal section of the lifting load belt (304).

10. The operating method of the long and deep foundation pit vertical hoist according to claim 6, characterized in that: The method is as follows: the long and large deep foundation pit vertical hoist is moved to the compacted foundation or hardened road surface on one side of the deep foundation pit through the walking mechanism and ensures that the vertical bending Z-shaped belt conveyor can be vertically extended into the deep foundation pit, the rotating disk is controlled to rotate the vertical bending Z-shaped belt conveyor to one side of the deep foundation pit, the pitching lifting mechanism is controlled to first pitch the vertical bending Z-shaped belt conveyor to reach the vertical position, and then the vertical bending Z-shaped belt conveyor is controlled to lift and lower to reach the set collecting position, and the vertical bending Z-shaped belt conveyor is started to operate. After the operation is stable, the soil excavated from the deep foundation pit is sent to the feeding port, and the material is sent out of the deep foundation pit and sent away by other equipment. When the size of the deep foundation pit is less than the set value Amm, the tensioning and adjusting telescopic hydraulic cylinder is controlled to loosen the lifting of the loading belt, and the first section of the belt frame is controlled to be lifted to the highest position, and then the second folding telescopic hydraulic cylinder is controlled to rotate the second section of the belt frame to keep it vertical with the first section of the belt frame, and finally the first folding telescopic hydraulic cylinder is controlled to rotate the third section of the belt frame After that, it is kept at the same horizontal plane with the second section belt frame, and the tensioning and adjusting telescopic hydraulic cylinder is controlled again to tension and lift the loading belt. After tensioning, the vertical bending Z-shaped belt conveyor is started to operate. If the excavation depth is greater than the set value Bmm, where B is greater than A+C, and C is the maximum lifting height of the first section belt frame, the loading belt is released at this time, and the first section belt frame is controlled to be lifted to the highest position. The first folding telescopic hydraulic cylinder is controlled to rotate the third section belt frame and keep it perpendicular to the second section belt frame. Finally, the second folding telescopic hydraulic cylinder is controlled to rotate the second section belt frame to keep the same vertical direction as the first section belt frame, tension and lift the loading belt, and start the vertical bending Z-shaped belt conveyor to operate after tensioning. After the deep foundation pit excavation at the set position is completed, the first section belt frame is controlled to be lifted to the highest position, and the pitch angle of the vertical bending Z-shaped belt conveyor is reset to the initial position through the pitch lifting mechanism, and the walking mechanism is controlled to enter the next position to excavate the deep foundation pit and lift the soil.

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