Multi-directional movable stone unloading device

By using an independent breaking mechanism and synchronous drive components, the functions of the pneumatic pick and suction cup are separated, which solves the problem of low unloading efficiency in existing stone unloading machines, realizes parallel operation and stable continuous operation of stone unloading, and significantly improves unloading efficiency.

CN224348100UActive Publication Date: 2026-06-12李玉仓

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
李玉仓
Filing Date
2025-05-27
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

In existing stone unloading machines, the air pick and suction cup are integrated. When the suction cup is handling the stone slab, the air pick cannot unload the slab at the same time, resulting in low unloading efficiency.

Method used

A multi-directional movable stone unloading device was designed, comprising a lifting unit, a lateral shifting unit, and an unloading unit. The device achieves functional separation of the pneumatic pick and the suction cup through an independent plate breaking mechanism, and utilizes an elastic suspension system and synchronous drive components to ensure that the pneumatic pick can perform unloading operations while the suction cup is moving the stone slabs.

🎯Benefits of technology

It enables parallel operation of the unloading process, significantly shortens the unloading time, improves unloading efficiency, and ensures the stability and continuity of unloading through adaptive adjustment and continuous contact.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of stone material unloading device that can move in many directions, it is related to stone slab unloading field, including lifting unit, transverse displacement unit and unloading unit, lifting unit includes bottom frame, two groups of vertical driving assembly and four vertical arms, four vertical arms are welded and fixed in the top of bottom frame in two pairs of a group, two horizontal braces are welded and fixed between left and right two vertical arms, vertical driving assembly is installed between upper and lower two horizontal braces, the parallel layout of the utility model through N groups of independent broken plate mechanism, pick and chuck convey function separation, while chuck conveys stone slab, pick can carry out broken plate processing to other stone slab, truly realizes the parallel operation of unloading process, greatly shorten whole unloading time, significantly improve unloading efficiency.
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Description

Technical Field

[0001] This utility model belongs to the field of stone slab unloading, specifically relating to a stone unloading device that can move in multiple directions. Background Technology

[0002] In the production of natural stone slabs, the rough stones, which have been processed into relatively square shapes, are cut into slabs. The bottom ends of these slabs are still connected before they are transported to the unloading area for unloading.

[0003] For example, Chinese patent CN115520645B discloses an automatic stone unloading machine, which relates to the field of stone unloading. It includes a support frame, a linear drive mechanism, a lifting mechanism, a thin stone slab unloading mechanism, a thick stone slab unloading mechanism, and a flipping mechanism. The thin stone slab unloading mechanism includes a fixed frame, two V-shaped mounting feet, and two short mounting feet. A connecting plate is installed inside the fixed frame and is fixedly installed at the bottom of the lifting mechanism. The two V-shaped mounting feet are arranged in parallel and are respectively installed on both sides of the fixed frame. An mounting plate is fixedly installed between the two V-shaped mounting feet. N air picks are clamped on the mounting plate, and the impact ends of the air picks extend out of the mounting plate. A U-shaped self-adaptive frame is provided at the lower part of the two V-shaped mounting feet. The two ends of the U-shaped self-adaptive frame are respectively hinged to the two V-shaped mounting feet. A suction cup seat is installed inside the U-shaped self-adaptive frame, and a stone suction cup is clamped on the suction cup seat. An elastic element is provided on the U-shaped self-adaptive frame so that the U-shaped self-adaptive frame automatically resets when no force is applied.

[0004] During subsequent use, the applicant discovered that the air pick and suction cup were integrated into the thin stone slab unloading mechanism. When the suction cup was moving the stone slab, the air pick could only follow it and remained stationary, making it impossible to unload the slab while the suction cup was moving it, which seriously affected the unloading efficiency.

[0005] Therefore, corresponding improvements should be made to address the shortcomings of this automatic stone unloading machine. Utility Model Content

[0006] In this unloading machine, the air pick and suction cup are integrated in the thin stone slab unloading mechanism. When the suction cup is moving the stone slab, the air pick can only move with it and is in a stationary state. It is impossible to unload the stone slab at the same time as the suction cup is moving it, which seriously affects the unloading efficiency. This utility model provides a stone unloading device that can move in multiple directions.

[0007] The solution adopted by this utility model to solve its technical problem is: a stone unloading device that can move in multiple directions, including a lifting unit, a horizontal shifting unit and an unloading unit. The lifting unit includes a base frame, two sets of vertical drive components and four vertical arms. The four vertical arms are welded and fixed to the top of the base frame in pairs, one in front and one behind. Two horizontal supports are welded and fixed between the left and right vertical arms. The vertical drive components are installed between the upper and lower horizontal supports.

[0008] The lateral displacement unit includes two parallel crossbeams and two sets of lateral drive components. The two crossbeams are arranged between the two sets of vertical drive components, and the crossbeams are connected to the vertical drive components so that the vertical drive components can drive the crossbeams to move up and down.

[0009] The lateral drive assembly is fixedly mounted on top of the crossbeam;

[0010] The unloading unit includes a main beam, a support shaft, a connecting beam, and N sets of plate-breaking mechanisms. The front and rear ends of the main beam are respectively connected to two sets of the lateral drive components, so that the lateral drive components drive the main beam to move laterally.

[0011] Two support arms are welded and fixed to the side of the main beam, the support shaft is installed between the two support arms, the connecting beam is set above the main beam, and at least two support members are installed between the connecting beam and the main beam.

[0012] The N-group plate-breaking mechanism is arranged sequentially from front to back between the connecting beam and the support shaft;

[0013] The plate breaking mechanism includes a guide rail, a sliding component, a pulling component, and a pneumatic hammer. The upper and lower ends of the guide rail are respectively fixedly connected to a connecting component and a rotating sleeve. The rotating sleeve is rotatably installed on the outside of the support shaft, and the upper end of the connecting component is installed on the bottom of the connecting beam through the pulling component.

[0014] The sliding component is mounted on the guide rail, and a mounting base is fixedly installed on the top of the sliding component. The pneumatic hammer is fixedly installed on the mounting base.

[0015] Preferably, the support is a hydraulic cylinder, and a pad is installed at the bottom end of the hydraulic cylinder, which is welded and fixed to the top of the main beam.

[0016] Preferably, rail trolleys are fixedly installed at the bottom of both ends of the main beam, and a second guide rail is fixedly installed at the top of the crossbeam, allowing the rail trolleys to slide along the second guide rail.

[0017] Preferably, one end of the connector is provided with a hanging ring, and the other end is provided with a mounting hole.

[0018] Preferably, the tensioning element is a spring installed between the hanging ring and the connecting beam.

[0019] Preferably, a guide rod is fixedly installed at the tail end of the pneumatic pick, the tail end of the guide rod protrudes through the mounting hole, and a second spring is sleeved on its outer side. The two ends of the second spring are respectively installed on the right side of the connector and the tail end of the pneumatic pick.

[0020] Preferably, it also includes a U-shaped top frame and two support columns. The two support columns are fixedly installed on the top of the main beam and are located on the front and rear sides of the two hydraulic cylinders, respectively. A hollow tilting and rotating cylinder is fixedly installed on the top of the support column. A rotating shaft is installed in the mounting hole of the hollow tilting and rotating cylinder. The two ends of the U-shaped top frame are fixedly connected to the two rotating shafts, respectively.

[0021] Preferably, it also includes a slider, a spring, and a slide rail. The slide rail is fixedly installed in the middle section of the main beam, the slider is slidably installed inside the slide rail, a top plate wheel is fixedly installed at the right end of the slider, and the spring is sleeved on the outside of the slider, with its two ends connected to the slide rail and the top plate wheel, respectively.

[0022] Preferably, the vertical drive assembly includes a drive motor, two sliding sleeves, and two threaded rods. Bearings are fitted at the bottom of both threaded rods, and bearing 2 is fitted at the top of one of the threaded rods. Bearings 1 and 2 are respectively mounted on two cross braces. The drive motor is fixedly mounted at the bottom of the upper cross brace, and its output shaft is connected to the top of the other threaded rod. Sprockets are fitted at the upper section of the optical shaft of both threaded rods, and the two sprockets are connected via chain drive. A lifting nut is threaded onto the threaded rod. The sliding sleeves are fitted onto the outside of the vertical arm, and the lifting nut and sliding sleeves are respectively fixedly connected to the crossbeam.

[0023] Preferably, the transverse drive assembly includes a second drive motor and a second threaded rod. Bearing seats are respectively fitted at the optical shafts at both ends of the second threaded rod. The bearing seats are fixedly installed on the top of the crossbeam. The second drive motor is fixedly installed on the top of the crossbeam, and its output shaft is connected to one end of the second threaded rod. A drive nut is threaded onto the second threaded rod, and the drive nut is fixedly installed at the bottom of the main beam.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. This utility model uses a parallel layout of N independent slab-breaking mechanisms to separate the pneumatic pick from the suction cup handling function. While the suction cup is handling the stone slabs, the pneumatic pick can break other stone slabs, truly realizing parallel operation of the unloading process, greatly shortening the overall unloading time and significantly improving unloading efficiency.

[0026] 2. This utility model uses an elastic suspension system composed of spring one and a connecting beam. The pick of each pneumatic pick can adaptively adjust according to the actual condition of the stone slab surface, ensuring that the pick is in full contact with the bottom of the stone slab. By setting spring two, the elastic force of spring two provides continuous and stable downward pressure to the pick of the pneumatic pick, so that the pick remains in contact with the bottom of the stone slab during the unloading process. Thus, under the action of spring one and spring two, the pneumatic pick maintains a stable working state, effectively ensuring the stability and continuity of the unloading work.

[0027] 3. By controlling the synchronous operation of two sets of vertical drive components, this utility model can adjust the height of the horizontal displacement unit and the unloading unit, so that the pneumatic pick can be raised to a suitable height to adapt to the rubble base of different thicknesses, and so that the pick's chisel corresponds to the bottom of the stone slab.

[0028] 4. This utility model controls the synchronous operation of two sets of lateral drive components to drive the main beam to move laterally. After completing the unloading operation of one stone slab, the pneumatic pick is quickly moved to the next target position to continue breaking and separating subsequent stone slabs, thus realizing continuous unloading operation.

[0029] 5. This utility model, by setting a top plate wheel, ensures that the top plate wheel continuously contacts the side of the stone slab under the action of the spring, preventing the stone slab from tipping over after it separates from the rubble base. Attached Figure Description

[0030] Figure 1 This is a front view structural diagram of the present invention;

[0031] Figure 2 This is one of the three-dimensional structural diagrams of the unloading plate unit of this utility model;

[0032] Figure 3 This is the second three-dimensional structural diagram of the unloading plate unit of this utility model;

[0033] Figure 4 This is a front view cross-sectional structural diagram of the unloading plate unit of this utility model;

[0034] Figure 5 This is a top view schematic diagram of the threaded rod 2 and guide rail 2 of this utility model.

[0035] In the diagram: 1 Main beam, 21 Support column, 22 Hollow rotating cylinder, 23 Rotary shaft, 24 U-shaped top frame, 31 Sliding bar, 32 Top plate wheel, 33 Spring 3, 34 Slide rail, 41 Support shaft, 42 Pneumatic hammer, 43 Connecting beam, 44 Support arm, 45 Pad block, 46 Hydraulic cylinder, 47 Guide rail 1, 48 Sliding component, 49 Spring 1, 410 Mounting seat, 411 Rotating sleeve, 412 Spring 2, 413 Connecting component, 414 Guide rod, 5 Rail trolley, 61 Base frame, 62 Vertical arm, 63 Sliding sleeve, 64 Cross brace, 65 Lifting nut, 66 Threaded rod 1, 67 Chain, 68 Sprocket, 69 Drive motor 1, 71 Crossbeam, 72 Threaded rod 2, 73 Guide rail 2, 74 Drive motor 2, 75 Drive nut. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Please see Figure 1-5 This utility model provides a technical solution for a stone unloading device that can move in multiple directions:

[0038] Example 1:

[0039] according to Figure 1-5 As shown, it includes a lifting unit, a lateral shifting unit, and a plate unloading unit.

[0040] The lifting unit includes a base frame 61, two sets of vertical drive components, and four vertical arms 62. The four vertical arms 62 are welded and fixed to the top of the base frame 61 in pairs, one in front and one behind. Two horizontal braces 64 are welded and fixed between the left and right vertical arms 62, which enhances the stability and rigidity of the structure.

[0041] The vertical drive assembly includes a drive motor 69, two sliding sleeves 63, and two threaded rods 66. The bottom ends of the two threaded rods 66 are fitted with bearings, and the top end of one of the threaded rods 66 is fitted with a bearing. Bearings 1 and 2 are respectively mounted on two cross braces 64. The drive motor is fixedly mounted on the bottom of the upper cross brace 64, and its output shaft is connected to the top end of the other threaded rod 66. The upper section of the optical shaft of the two threaded rods 66 is fitted with sprockets 68. The two sprockets 68 are connected by a chain 67 to drive the two threaded rods 66 to rotate synchronously. The threaded rods 66 are threaded with lifting nuts 65. The sliding sleeves 63 are fitted on the outside of the vertical arm 62.

[0042] The lateral displacement unit includes two parallel crossbeams 71 and two sets of lateral drive components. The two crossbeams 71 are positioned between the two sets of vertical drive components. The crossbeams 71 are fixedly connected to the lifting nut 65 and the sliding sleeve 63. By controlling the synchronous operation of the two sets of vertical drive components, the crossbeams 71 are driven to move smoothly up and down.

[0043] The transverse drive assembly includes a second drive motor 74 and a second threaded rod 72. Bearing seats are respectively fitted at the two ends of the optical shaft of the second threaded rod 72. The bearing seats are fixedly installed on the top of the crossbeam 71. The second drive motor 74 is fixedly installed on the top of the crossbeam 71, and its output shaft is connected to one end of the second threaded rod 72. A drive nut 75 is threadedly connected to the second threaded rod 72.

[0044] The unloading unit includes a main beam 1, a support shaft 41, a connecting beam 43, and N sets of plate-breaking mechanisms. The front and rear ends of the main beam 1 are fixedly connected to two drive nuts 75 respectively. By controlling the synchronous operation of the two sets of lateral drive components, the main beam 1 is driven to move laterally smoothly. Two support arms 44 are welded and fixed to the side of the main beam 1, and the support shaft 41 is installed between the two support arms 44.

[0045] The connecting beam 43 is positioned above the main beam 1. At least two support members are installed between the connecting beam 43 and the main beam 1. The support members are hydraulic cylinders 46. A pad 45 is installed at the bottom of the hydraulic cylinder 46. The pad 45 is welded and fixed to the top of the main beam 1. The height of the connecting beam 43 is adjusted by controlling the synchronous extension and retraction of the two hydraulic cylinders 46.

[0046] N sets of slab breaking mechanisms are arranged sequentially between the connecting beam 43 and the support shaft 41 from front to back. Through the parallel layout of N sets of independent slab breaking mechanisms, the pneumatic pick 42 is separated from the suction cup handling function. While the suction cup is handling the stone slabs, the pneumatic pick 42 can break other stone slabs, truly realizing the parallel operation of the unloading process, greatly shortening the overall unloading time and significantly improving the unloading efficiency.

[0047] The plate breaking mechanism includes a guide rail 47, a sliding member 48, a pulling member, and a pneumatic pick 42. The upper and lower ends of the guide rail 47 are respectively fixedly connected to a connector 413 and a rotating sleeve 411. The rotating sleeve 411 is rotatably installed on the outside of the support shaft 41, so that the guide rail 47 can rotate.

[0048] One end of the connector 413 is provided with a hanging ring, and the other end is provided with a mounting hole. The pulling member is a spring 49 installed between the hanging ring and the connecting beam 43. The sliding member 48 is set on the guide rail 47, and the top of the sliding member 48 is fixedly installed with a mounting base 410. The pneumatic pick 42 is fixedly installed on the mounting base 410. Through the elastic suspension system formed by the spring 49 and the connecting beam 43, the pick of each pneumatic pick 42 can be adaptively adjusted according to the actual condition of the stone slab surface to ensure that the pick is in full contact with the bottom of the stone slab.

[0049] A guide rod 414 is fixedly installed at the tail end of the pneumatic pick 42. The tail end of the guide rod 414 passes through the mounting hole, and a second spring 412 is sleeved on its outer side. The two ends of the second spring 412 are respectively installed on the right side of the connector 413 and the tail end of the pneumatic pick 42. Relying on the elastic force of the second spring 412, a continuous and stable downward pressure is provided to the pick of the pneumatic pick 42, so that the pick remains in contact with the bottom of the stone slab during the unloading process. Thus, under the action of the first spring 49 and the second spring 412, the pneumatic pick 42 maintains a stable working state, effectively ensuring the stability and continuity of the unloading work.

[0050] It also includes a slider 31, a spring 33, and a slide rail 34. The slide rail 34 is fixedly installed in the middle section of the main beam 1. The slider 31 is slidably installed inside the slide rail 34. Under the action of the slide rail 34, the slider 31 remains stable during left and right movement. A top plate wheel 32 is fixedly installed on the right end of the slider 31. The spring 33 is sleeved on the outside of the slider 31, and its two ends are connected to the slide rail 34 and the top plate wheel 32 respectively. By setting the top plate wheel 32, under the action of the spring 33, the top plate wheel 32 is continuously in contact with the side of the stone slab, preventing the stone slab from tipping over after it separates from the rubble base.

[0051] In practical use, the multi-directional movable stone unloading device of this utility model first controls the synchronous operation of two drive motors 69. Under the transmission action of two chains 67 and four sprockets 68, the four threaded rods 66 rotate synchronously in the forward direction. Under the action of four lifting nuts 65, the two crossbeams 71 are raised to a suitable height, and the jackhammer 42 is also raised to a suitable height to adapt to the rubble base of different thicknesses.

[0052] The synchronous operation of the two drive motors 74 is controlled to make the two threaded rods 72 rotate synchronously in the forward direction, and the two drive nuts 75 drive the main beam 1 to move laterally, so that the jackhammer 42 corresponds to the bottom of the stone slab.

[0053] Next, the synchronous extension and retraction of the two hydraulic cylinders 46 are controlled to adjust the height of the connecting beam 43 and the tilt angle of the N sets of slab breaking mechanisms as a whole. Then, through the elastic suspension system formed by the spring 49 and the connecting beam 43, the pick of each pneumatic pick 42 can be adaptively adjusted according to the actual condition of the stone slab surface to ensure that the pick is in full contact with the bottom of the stone slab. At the same time, relying on the elastic force of the spring 412, a continuous and stable downward pressure is provided to the pick of the pneumatic pick 42, so that the pick always keeps in contact with the bottom of the stone slab during the unloading process. Then, N pneumatic picks 42 are started at the same time to carry out the unloading operation.

[0054] After unloading a stone slab and moving the separated slab away, the two drive motors 74 are controlled to work synchronously again, and the pneumatic pick 42 is quickly moved to the next target position to continue breaking and separating subsequent stone slabs, thus realizing continuous unloading operations.

[0055] Example 2:

[0056] Based on Example 1, such as Figure 1 and Figure 2 As shown, track trolleys 5 are fixedly installed at the bottom of both ends of the main beam 1, and guide rails 73 are fixedly installed at the top of the crossbeam 71. The track trolleys can slide along the guide rails 73, so that the main beam 1 can slide along the guide rails 73 on both sides.

[0057] It also includes a U-shaped top frame 24 and two support columns 21. The two support columns 21 are fixedly installed on the top of the main beam 1 and are located on the front and rear sides of the two hydraulic cylinders 46 respectively. A hollow rotating cylinder 22 is fixedly installed on the top of the support column 21. A rotating shaft 23 is installed in the mounting hole of the hollow rotating cylinder 22. The two ends of the U-shaped top frame 24 are fixedly connected to the two rotating shafts 23 respectively. By controlling the synchronous operation of the two hollow rotating cylinders 22, the two rotating shafts 23 and the U-shaped top frame 24 are driven to rotate, so that the U-shaped top frame 24 is perpendicular to the stone slab. Then, before the jackhammer 42 completely separates the stone slab from the rubble base, the synchronous operation of the two sets of lateral drive components is controlled to drive the main beam 1 and the U-shaped top frame 24 to move laterally, so that the U-shaped top frame 24 contacts the stone slab and pushes the stone slab to separate the stone slab from the rubble base.

Claims

1. A stone unloading device capable of multi-directional movement, characterized in that: It includes a lifting unit, a lateral shifting unit, and a plate unloading unit. The lifting unit includes a base frame, two sets of vertical drive components, and four vertical arms. The four vertical arms are welded and fixed to the top of the base frame in pairs, one in front and one behind. Two horizontal supports are welded and fixed between the left and right vertical arms. The vertical drive components are installed between the upper and lower horizontal supports. The lateral displacement unit includes two parallel crossbeams and two sets of lateral drive components. The two crossbeams are arranged between the two sets of vertical drive components, and the crossbeams are connected to the vertical drive components so that the vertical drive components can drive the crossbeams to move up and down. The lateral drive assembly is fixedly mounted on top of the crossbeam; The unloading unit includes a main beam, a support shaft, a connecting beam, and N sets of plate-breaking mechanisms. The front and rear ends of the main beam are respectively connected to two sets of the lateral drive components, so that the lateral drive components drive the main beam to move laterally. Two support arms are welded and fixed to the side of the main beam, the support shaft is installed between the two support arms, the connecting beam is set above the main beam, and at least two support members are installed between the connecting beam and the main beam. The N-group plate-breaking mechanism is arranged sequentially from front to back between the connecting beam and the support shaft; The plate breaking mechanism includes a guide rail, a sliding component, a pulling component, and a pneumatic hammer. The upper and lower ends of the guide rail are respectively fixedly connected to a connecting component and a rotating sleeve. The rotating sleeve is rotatably installed on the outside of the support shaft, and the upper end of the connecting component is installed on the bottom of the connecting beam through the pulling component. The sliding component is mounted on the guide rail, and a mounting base is fixedly installed on the top of the sliding component. The pneumatic hammer is fixedly installed on the mounting base.

2. The multi-directional movable stone unloading device according to claim 1, characterized in that: The support component is a hydraulic cylinder, and a pad is installed at the bottom of the hydraulic cylinder. The pad is welded and fixed to the top of the main beam.

3. The multi-directional movable stone unloading device according to claim 1, characterized in that: The bottom ends of the main beam are respectively fixedly installed with rail trolleys, and the top of the crossbeam is fixedly installed with guide rail two, and the rail trolleys can slide along guide rail two.

4. The multi-directional movable stone unloading device according to claim 1, characterized in that: One end of the connector is provided with a hanging ring, and the other end is provided with a mounting hole.

5. The multi-directional movable stone unloading device according to claim 4, characterized in that: The tensioning element is a spring installed between the hanging ring and the connecting beam.

6. The multi-directional movable stone unloading device according to claim 4, characterized in that: The tail end of the pneumatic pick is fixedly installed with a guide rod, the tail end of which protrudes through a mounting hole, and a second spring is sleeved on its outer side. The two ends of the second spring are respectively installed on the right side of the connector and the tail end of the pneumatic pick.

7. The multi-directional movable stone unloading device according to claim 2, characterized in that: It also includes a U-shaped top frame and two support columns. The two support columns are fixedly installed on the top of the main beam and are located on the front and rear sides of the two hydraulic cylinders respectively. A hollow tilting and rotating cylinder is fixedly installed on the top of the support column. A rotating shaft is installed in the mounting hole of the hollow tilting and rotating cylinder. The two ends of the U-shaped top frame are fixedly connected to the two rotating shafts respectively.

8. The multi-directional movable stone unloading device according to claim 1, characterized in that: It also includes a slider, a spring, and a slide rail. The slide rail is fixedly installed in the middle section of the main beam. The slider is slidably installed inside the slide rail. A top plate wheel is fixedly installed on the right end of the slider. The spring is sleeved on the outside of the slider, and its two ends are connected to the slide rail and the top plate wheel, respectively.

9. The multi-directional movable stone unloading device according to claim 1, characterized in that: The vertical drive assembly includes a drive motor, two sliding sleeves, and two threaded rods. Bearings are fitted at the bottom of both threaded rods, and bearing 2 is fitted at the top of one of the threaded rods. Bearings 1 and 2 are respectively mounted on two cross braces. The drive motor is fixedly mounted at the bottom of the upper cross brace, and its output shaft is connected to the top of the other threaded rod. Sprockets are fitted at the upper section of the optical shaft of both threaded rods, and the two sprockets are connected via chain drive. A lifting nut is threaded onto the threaded rod. The sliding sleeves are fitted onto the outside of the vertical arm, and the lifting nut and sliding sleeves are respectively fixedly connected to the crossbeam.

10. The multi-directionally movable stone unloading device according to claim 1 or 9, characterized in that: The transverse drive assembly includes a second drive motor and a second threaded rod. Bearing seats are respectively fitted at the optical shafts at both ends of the second threaded rod. The bearing seats are fixedly installed on the top of the crossbeam. The second drive motor is fixedly installed on the top of the crossbeam, and its output shaft is connected to one end of the second threaded rod. A drive nut is threaded onto the second threaded rod, and the drive nut is fixedly installed at the bottom of the main beam.