Ground-to-air automatic transfer device of auxiliary transportation system of coal mine

Abstract

The present application provides a kind of coal mine auxiliary transportation system ground-air automatic transfer device, including the container for transfer, is equipped with the automatic grabbing hoist of container in the hydraulic lifting beam and can automatically grab and release container, is used for the special mine car of relay transport to container and can with container automatic docking locking and automatic release docking locking;Container four corners each set a set of automatic docking mechanism cooperating with special mine car, container four corners upper portion each is equipped with a hanging ear for connecting with automatic grabbing hoist, automatic grabbing hoist is equipped with double-end oil cylinder with two bolts movement, automatic grabbing hoist is automatically grabbed and released by two bolts and the dynamic cooperation of container hanging ear, the automatic docking mechanism of container includes rotary lock and is equipped with the waist-shaped hole on special mine car and is cooperated to realize automatic locking and release locking.The present application can realize the unmanned operation of mine container in ground-air transfer each link, save manpower, improve operation efficiency, reduce safety accidents.

Description

Technical Field

[0001] This invention relates to the field of auxiliary transportation equipment technology in coal mines, and specifically to an automatic ground-to-air transfer device for an auxiliary transportation system in coal mines. Background Technology

[0002] Currently, coal mine auxiliary transportation systems commonly use mining containers to load materials and equipment. Where monorail tracks are available, the hydraulic lifting beams of the monorail system lift the containers loaded with materials and equipment. Where monorail tracks are unavailable or inconvenient to install, specialized mining cars running on ground-mounted rails are used for ground-to-air relay transport of containers. The current practice for ground-to-air relay transport of containers in coal mine auxiliary transportation systems is as follows: When lifting a container, the hydraulic lifting beam, controlled by the monorail power unit, lowers the chain hooks via a hydraulic system. Manually, the hooks of the hydraulic lifting beam are engaged with the mounting holes on the container. The hydraulic lifting beam then lifts the container and transports it to the location of the specialized mining car for relay transport. The hydraulic lifting beam then lowers the container, and manually removes the hooks from the mounting holes on the container. The hydraulic lifting beam then retracts the chain hooks. When the container is relay transported by the specialized mining car, the container needs to be... The common practice in the industry for connecting and securing specialized mining cars is to install connecting lugs with connecting pin holes at the four corners of the container's lower surface, and connecting seats with corresponding pin holes at the four corners of the specialized mining car's upper surface. When the container is placed on the specialized mining car, the connecting lugs at the four corners of the container's lower surface mate with the connecting seats at the four corners of the specialized mining car's upper surface. Connecting pins are then manually inserted and tightened to secure the container to the specialized mining car. Similarly, to disconnect the container from the specialized mining car, the same reverse process is used manually. It is evident that current coal mine auxiliary transportation systems require manual operation at every stage of container transfer between ground and air, resulting in high labor costs, low efficiency, and a high risk of safety accidents. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art by providing an automatic ground-to-air transfer device for a coal mine auxiliary transportation system. This device enables unmanned operation of all stages of ground-to-air transfer of mining containers between a mining monorail crane and a dedicated mining car, thereby saving manpower, improving operational efficiency, and reducing safety accidents.

[0004] The technical solution of the present invention is: the automatic ground-to-air transfer device of the coal mine auxiliary transportation system of the present invention, the structural features of which are: a container for loading coal minerals and equipment for transfer; an automatic gripping lifting device that is installed on the hydraulic lifting beam of the coal mine monorail system and can automatically grab and release the container during use; and a special mining car that runs on the coal mine ground rail for relay transportation of the container and can automatically dock and lock with the container and automatically release the docking lock.

[0005] A further solution is as follows: The aforementioned container includes a container body, and during use, when the aforementioned automatic gripping spreader presses down and releases the container, it is automatically docked and locked with the aforementioned special mining car, and automatically released from docking and locking. The aforementioned container body includes four main columns located at the four corners. Each main column includes a column body and upper and lower corner pieces respectively fixed at the upper and lower ends of the column body. The aforementioned automatic docking mechanism is set in each main column. Each of the four upper corner pieces is fixedly provided with a hook ear for connecting with the aforementioned automatic gripping spreader. The hook ear is provided with a hook hole.

[0006] A further embodiment is as follows: the aforementioned automatic docking mechanism includes a retractable pressure rod located within the upper corner piece, a guide rod whose upper end is fixedly connected to the pressure rod and located within the column, a guide sleeve fixedly located within the column for limiting and guiding the guide rod, a return spring for resetting the guide rod, a bearing fixedly located within the lower corner piece, a limiting sleeve sleeved with and rotatable by the bearing, a rotary lock with a spiral groove at the upper part and a lock head at the lower end fixedly connected to the limiting sleeve, a guide pin movably located within the spiral groove of the rotary lock, and a connector located within the column for connecting the guide pin to the guide rod.

[0007] A further solution is as follows: the guide rod and the pressure rod are threaded together and locked by the provided adjusting nut; the lower end of the guide rod passes through the guide sleeve and is fixedly connected to the connector; the return spring is sleeved on the guide rod, and the upper and lower ends of the return spring elastically abut against the spring locking nut provided on the guide rod and the upper end of the guide sleeve, respectively; the connector is an inverted U-shaped structural component, and the connector is fixedly connected to the lower end of the guide rod at the middle of its upper end, and the two ends of the guide pin are fixedly connected to the two sides of the lower end of the connector.

[0008] A further embodiment is as follows: the aforementioned rotary lock is a structural component consisting of the aforementioned lock head and a lock rod located above the lock head, which are integrally or fixedly connected. The lock rod is cylindrical in shape, and the aforementioned spiral groove is located on the upper part of the lock rod. The aforementioned spiral groove is arranged on the upper part of the lock rod in an axial manner from top to bottom and radially inclined and through. The outer periphery of the middle part of the lock rod is provided with an external thread that is fixedly connected to the aforementioned limiting sleeve thread.

[0009] A further solution is as follows: the aforementioned locking rod is composed of a first rod portion located on the upper side and a second rod portion located on the lower side, which are integrally or fixedly connected, and the diameter of the first rod portion is smaller than the diameter of the second rod portion. The aforementioned spiral groove and external thread are both provided on the first rod portion; the aforementioned lock head is a structural component formed by cutting two mutually parallel cutting planes along the axial direction on the outer side of a cone.

[0010] A further embodiment is as follows: The aforementioned automatic gripping spreader includes a main frame, connecting lugs fixedly mounted on the main frame for connection with a hydraulic lifting beam, a cylinder mounting bracket fixedly mounted on each of the lower left and right sides of the main frame, a double-headed cylinder mounted in each cylinder mounting bracket in the front-rear direction, a pin connected to each double-headed cylinder in a transmission manner on each of the front and rear sides of each double-headed cylinder, and a plug-in guide fixedly mounted on each of the lower front and rear sides of the two cylinder mounting brackets; in use, driven by the double-headed cylinders, each pin can automatically engage and disengage with the corresponding hook hole of the aforementioned container; the aforementioned plug-in guide is used to guide the automatic gripping spreader to dock with the container body.

[0011] A further solution is: each of the two cylinder mounting brackets is provided with a pin passage hole in the front and rear directions for the pin to extend and retract during operation; the double-headed cylinder has a cylinder body, two piston rods, and a cylinder connecting sleeve fixedly installed at the outer end of each of the two piston rods; and the pin is fixedly installed on each of the two cylinder connecting sleeves of the two double-headed cylinders.

[0012] A further solution is to equip each of the two double-headed cylinders with a set of cylinder valves to prevent accidental backflow of hydraulic oil after oil enters the rodless chamber of the double-headed cylinder during use.

[0013] Further options include: the aforementioned special mining car includes a body, connecting plates fixed at the four corners of the body, a container lower corner guide seat fixed on one side of each connecting plate for guiding the docking of the aforementioned containers, and wheels located under the body for running on the coal mine track during use; each connecting plate is provided with a waist-shaped hole for cooperating with a corresponding automatic docking mechanism of the aforementioned containers to automatically lock and unlock the containers to the special mining car.

[0014] This invention has positive effects: Through the structural design of each component and the structural design of their mutual cooperation, the coal mine auxiliary transportation system of this invention can realize unmanned operation of all aspects of the ground-to-air transfer of containers between the mine monorail crane and the special mine car. Compared with the existing technology where each aspect requires manual operation, this invention can significantly save manpower, significantly improve work efficiency, and significantly reduce safety accidents. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of the present invention. The figure also uses dashed lines to schematically show the fit between the components.

[0016] Figure 2 Enlarged Figure 1 The left view;

[0017] Figure 3 for Figure 2 A schematic diagram of the front cross-sectional structure of the automatic gripping lifting device;

[0018] Figure 4 for Figure 2 A three-dimensional structural diagram of the automatic gripping lifting device;

[0019] Figure 5 China Figure 1 An enlarged top view of a container.

[0020] Figure 6 China Figure 1 A magnified left view of the container.

[0021] Figure 7 for Figure 6 A schematic diagram of the front cross-sectional structure;

[0022] Figure 8 for Figure 7 A three-dimensional structural diagram of a central rotary lock;

[0023] Figure 9 To and Figure 8 A three-dimensional structural diagram of the rotary lock when viewed from different angles;

[0024] Figure 10 for Figure 1 A partial structural diagram of one side of a special-purpose mining car;

[0025] Figure 11 for Figure 1 The diagram shows the interconnected structure of the automatic gripping spreader, container, and special mining car. The automatic gripping spreader is shown in a simplified schematic, and the cover plate of the main column of the container is removed. The connection between the special mining car and the container is shown in perspective.

[0026] Figure 12 This is a schematic diagram showing the relationship between the present invention and the hydraulic lifting beam and ground rail of the monorail crane during use.

[0027] The reference numerals in the above figures are as follows:

[0028] Automatic gripping lifting device 1, main frame 11, front beam 11-1, rear beam 11-2, left end 11-3, right end 11-4, connecting lug 12, connecting hole 12-1, cylinder mounting bracket 13, outer end plate 13-1, inner end plate 13-2, front side plate 13-3, double-headed cylinder 14, cylinder body 14-1, piston rod 14-2, cylinder connecting sleeve 14-3, oil nozzle 14-4, cylinder valve group 14-5, pin 15, insertion guide 16, first plate 16-1, second plate 16-2;

[0029] Container 2, container body 21, main column 21-1, column body 21-1-1, cover plate 21-1-1-1, mounting cross plate 21-1-1-2, upper corner piece 21-1-2, lower corner piece 21-1-3, crossbeam 21-2, longitudinal beam 21-3, vertical beam 21-4, bottom beam 21-5, mounting lug 21-6, mounting hole 21-6-1; automatic docking mechanism 22, pressure rod 22-1, guide rod 22-2, adjusting nut 22-2-1, guide sleeve 2 2-3, return spring 22-4, spring lock nut 22-4-1, connector 22-5, guide pin 22-6, turn lock 22-7, lock rod 22-7-1, first rod part 22-7-1-1, second rod part 22-7-1-2, lock head 22-7-2, cut plane 22-7-2-1, spiral groove hole 22-7-3, external thread 22-7-4, bearing 22-8, limit sleeve 22-9, limit sleeve lock nut 22-9-1;

[0030] Special mining car 3, body 31, connecting plate 32, waist-shaped hole 32-1, container lower corner guide seat 33, wheel 34;

[0031] Monorail track 100, hydraulic lifting beam 101, lifting chain 101-1, ground rail 102. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] (Example 1)

[0034] In this embodiment, when describing the orientation, it uses... Figure 1 The direction being faced is the front as described, with the back to the front. Figure 1 The direction it faces is the rear, as described. Figure 1 The up-down and left-right directions are still the same as those described.

[0035] See Figure 1 The automatic ground-to-air transfer device of the coal mine auxiliary transportation system in this embodiment mainly consists of an automatic grabbing hoist 1, a container 2, and a special mining car 3 that cooperate automatically with each other during use.

[0036] See Figures 1 to 4 The automatic gripping lifting device 1 is mainly composed of a main frame 11, connecting lugs 12, hydraulic cylinder mounting bracket 13, double-headed hydraulic cylinder 14, pins 15, and plug-in guide components 16.

[0037] The main frame 11 serves as the load-bearing foundation for the installation and use of the automatic gripping lifting device 1. The main frame 11 is a hollow frame structure with an overall rectangular shape. In one specific implementation, the main frame 11 is mainly composed of a front beam 11-1, a rear beam 11-2, a left end 11-3, and a right end 11-4. The left end 11-3 and the right end 11-4 are respectively located on the left and right sides of the front beam 11-1 and the rear beam 11-2 and are integrally or fixedly connected to the front beam 11-1 and the rear beam 11-2.

[0038] The connecting lug 12 is fixedly mounted on the main frame 11. The connecting lug 12 has a connecting hole 12-1 for connection. In use, the connecting lug 12 is used to connect with the hydraulic lifting beam of the monorail auxiliary transportation system. As a specific implementation, one connecting lug 12 is fixedly mounted on the upper surface of the left end 11-3 and right end 11-4 of the main frame 11, at the midpoint of their front-to-back direction. Preferably, each connecting lug 12 consists of two parallel connecting plates, each with a through hole. The through holes on the two connecting plates together form the connecting hole 12-1 of the connecting lug 12.

[0039] The cylinder mounting bracket 13 is used for mounting the double-headed cylinder 14. One cylinder mounting bracket 13 is fixedly installed on each of the lower left and right sides of the main frame 11. Each cylinder mounting bracket 13 has a pin through hole on its front and rear sides. In one specific implementation, the cylinder mounting bracket 13 is a box-shaped structure with an open top, consisting of an outer end plate 13-1, an inner end plate 13-2, a front side plate 13-3, a rear side plate, and a bottom plate. The pin through holes of the cylinder mounting bracket 13 are provided on both the front and rear sides of the front and rear side plates. The outer end plate 13-1 and the bottom plate of the cylinder mounting bracket 13 have mounting clearance holes. Each of the two cylinder mounting brackets 13 is fixedly connected at its upper end to the lower part of the left end 11-3 and the right end 11-4 of the main frame 11, with one mounted below each of the left and right ends of the main frame 11.

[0040] One double-ended hydraulic cylinder 14 is installed in each of the two cylinder mounting brackets 13. The double-ended hydraulic cylinder 14 has a cylinder body 14-1, two piston rods 14-2, a cylinder connecting sleeve 14-3 fixedly installed at the outer end of each of the two piston rods 14-2, and an oil nozzle 14-4 for inlet and outlet of hydraulic oil. The double-ended hydraulic cylinder 14 is a commercially available part, and its specific structure and working principle will not be described in detail.

[0041] As a preferred embodiment, each of the two double-headed cylinders 14 is equipped with a set of cylinder valve assemblies 14-5. This is to prevent hydraulic oil backflow in the rodless chamber of the double-headed cylinder 14 due to a malfunction in the monorail crane's hydraulic system after oil has entered (corresponding to the two pins 15 being in the extended state), which would cause the two pins 15 to retract and disengage from the container 2. This further ensures safety and operational reliability. The cylinder valve assemblies 14-5 are respectively connected to the oil nozzle 14-4 and the rodless chamber and two rod chambers of the double-headed cylinder 14 for fluid flow. The cylinder valve assemblies 14-5 themselves are commercially available components, and their structure and working principle will not be described in detail.

[0042] The pin 15 is used to connect with the container for transshipment during use. There are four pins 15 in total. One pin 15 is fixedly installed on each of the two cylinder connecting sleeves 14-3 of the two double-headed cylinders 14. During operation, the pin 15 can extend outward and retract inward through the pin through hole of the cylinder mounting bracket 13 under the drive of the double-headed cylinder 14.

[0043] One insertion guide 16 is fixedly installed on each of the front and rear sides of the two cylinder mounting brackets 13, and the two insertion guides 16 on the front and rear sides of each cylinder mounting bracket 13 are arranged in a mirror image of each other. The insertion guide 16 is used to guide the automatic gripping spreader 1 and the container 2 to smoothly insert into each other during use. As a specific implementation, the insertion guide 16 is a structural component consisting of a first plate 16-1 (wider at the top and narrower at the bottom) and a second plate 16-2 that are integrally formed or fixedly connected, with an acute included angle between the two plates. Preferably, the common edge formed by the connection of the first plate 16-1 and the second plate 16-2 slopes from the upper inside to the lower outside.

[0044] See Figure 1 as well as Figures 5 to 9 Container 2 mainly consists of container body 21 and automatic docking mechanism 22.

[0045] The box 21 is a rectangular frame structure, which includes main columns 21-1, crossbeams 21-2, longitudinal beams 21-3, vertical beams 21-4, bottom beams 21-5, and mounting ears 21-6.

[0046] The main column 21-1 includes a column body 21-1-1, an upper corner piece 21-1-2, and a lower corner piece 21-1-3. The column body 21-1-1 is a hollow structural component with an overall rectangular shape. The upper corner piece 21-1-2 and the lower corner piece 21-1-3 are respectively fixed at the upper and lower ends of the column body 21-1-1. One main column 21-1 is set at each of the four corners of the box body 21. Each main column 21-1 has a hollow opening on the outside of the column body 21-1-1 for easy installation. The hollow opening is covered by a matching cover plate 21-1-1-1. The middle part of each column body 21-1-1 has two mounting horizontal plates 21-1-1-2 at the top and bottom. The upper corner piece 21-1-2 and the lower corner piece 21-1-3 are both provided with vertically penetrating mounting holes.

[0047] Two crossbeams 21-2 are provided at the top and bottom. The two upper crossbeams 21-2 are each fixedly connected at both ends to the upper corner piece 21-1-2 of a main column 21-1, and the two lower crossbeams 21-2 are each fixedly connected at both ends to the lower corner piece 21-1-3 of a main column 21-1. Two longitudinal beams 21-3 are provided at the top and bottom. The two upper longitudinal beams 21-3 are each fixedly connected at both ends to the upper corner piece 21-1-2 of a main column 21-1, and the two lower longitudinal beams 21-3 are each fixedly connected at both ends to the lower corner piece 21-1-3 of a main column 21-1. Thus, the four main columns 21-1, four crossbeams 21-2, and four longitudinal beams 21-3 constitute the rectangular main frame of the box 21. Vertical beams 21-4 are fixedly installed between horizontal beams 21-2 located above and below each other on the same side, and between vertical beams 21-3 located above and below each other on the same side. The number of vertical beams 21-4 is determined as needed. Bottom beams 21-5 are fixedly installed between the two horizontal beams 21-2 located below. The number of bottom beams 21-5 is determined as needed. Hanging ears 21-6 are plate-shaped structural components. Hanging ears 21-6 are provided with hanging holes 21-6-1 that cooperate with the pins 15 of the aforementioned automatic gripping lifting device 1. One hanging ear 21-6 is fixedly installed on the outside of the upper corner piece 21-1-2 of each main column 21-1.

[0048] The automatic docking mechanism 22 is used to automatically dock and lock with the special mining car 3 and automatically release the docking lock during use. One set of the automatic docking mechanism 22 is installed in each main column 21-1 of the box 21.

[0049] The automatic docking mechanism 22 is mainly composed of a pressure rod 22-1, a guide rod 22-2, a guide sleeve 22-3, a return spring 22-4, a connector 22-5, a guide pin 22-6, a rotary lock 22-7, a limit sleeve 22-8, and a bearing 22-9.

[0050] The pressure rod 22-1 is telescopically mounted in the mounting hole of the upper corner piece 21-1-2 of the main column 21-1. The upper part of the guide rod 22-2 is threadedly connected to the lower part of the pressure rod 22-1 and locked by the matching adjusting nut 22-2-1. The guide sleeve 22-3 passes through the two mounting horizontal plates 21-1-1-2 inside the column body 21-1-1 of the main column 21-1 and is fixedly mounted on the two mounting horizontal plates 21-1-1-2. The lower end of the guide rod 22-2 passes through the guide sleeve 22-3 and extends downward. The return spring 22-4 is sleeved on the guide rod 22-2. The upper end of the return spring 22-4 elastically abuts against the spring locking nut 22-4-1 provided on the guide rod 22-2, and the lower end of the return spring 22-4 elastically abuts against the upper end of the guide sleeve 22-3. The connecting piece 22-5 is an inverted U-shaped structural component. The connecting piece 22-5 is fixedly connected to the lower end of the guide rod 22-2 at the middle of its upper end. The two ends of the guide pin 22-6 are fixedly connected to the two sides of the lower end of the connecting piece 22-5.

[0051] The rotary lock 22-7 is a structural component consisting of a locking rod 22-7-1 and a lock head 22-7-2, either integrally or fixedly connected. The lock head 22-7-2 is located at the lower end of the locking rod 22-7-1. The locking rod 22-7-1 is cylindrical in shape. The upper part of the locking rod 22-7-1 has a spiral groove 22-7-3 that runs axially from top to bottom and is radially inclined and penetrating, used for connecting the drive. The outer periphery of the middle part of the locking rod 22-7-1 has an external screw for connection and adjustment. Thread 22-7-4; As a preferred embodiment, the locking rod 22-7-1 is integrally or fixedly connected to a first rod portion 22-7-1-1 located on the upper side and a second rod portion 22-7-1-2 located on the lower side, and the diameter of the first rod portion 22-7-1-1 is smaller than the diameter of the second rod portion 22-7-1-2. The spiral groove hole 22-7-3 and the external thread 22-7-4 of the aforementioned rotary lock 22-7 are both provided on the first rod portion 22-7-1-1. The lock head 22-7-2 is a structural component formed by cutting two mutually parallel cutting planes 22-7-2-1 axially on the outer side of a cone.

[0052] The bearing 22-8 is fixedly mounted on the lower corner piece 21-1-3 of the main column 21-1 by its outer ring. The limiting sleeve 22-9 is sleeved with the inner ring of the bearing 22-8 in the lower corner piece 21-1-3, so that it can rotate with the bearing 22-8. The lock 22-7 has its locking rod 22-7-1 passing through the limiting sleeve 22-9 and is threaded to the limiting sleeve 22-9 by the external thread 22-7-4 on its locking rod 22-7-1. The limiting sleeve 22-9 is locked by the locking nut 22-9-1 provided with the limiting sleeve 22-9 and the external thread 22-7-4 of the lock 22-7. The lock 22-7 is sleeved with the guide pin 22-6 by the spiral groove hole 22-7-3 above it. The lock head 22-7-2 of the lock 22-7 extends downwards from the lower corner piece 21-1-3 of the main column 21-1. When the guide pin 22-6 moves from top to bottom or from bottom to top in the spiral groove 22-7-3 of the rotary lock 22-7, the rotary lock 22-7 can rotate 90° in the opposite direction accordingly. The rotation of the rotary lock 22-7 can interchange the directions of the conical surface of the lock head 22-7-2 and the tangential surface 22-7-2-1.

[0053] See Figure 1 , Figure 2 and Figure 10 The special mining car 3 is used for relay transportation of container 2 on the ground. The special mining car 3 includes a body 31, connecting plates 32 fixed at the four corners of the body 31, a container lower corner guide seat 33 fixed on one side of each connecting plate 32, and wheels 34 located under the body 31; each connecting plate 32 is provided with an oblong hole 32-1 that cooperates with the lock head 22-7-2 of the rotary lock 22-7 of the automatic docking mechanism 22 of container 2.

[0054] See Figure 12 and Figure 11 The working principle and process of the automatic ground-to-air transfer device of the coal mine auxiliary transportation system in this embodiment are briefly described as follows:

[0055] In this embodiment, when the automatic ground-to-air transfer device is in use, the special mining car 3 runs on the ground rail 102 of the coal mine. The automatic grabbing lifting device 1 is connected to the lifting chains 101-1 on both sides of the hydraulic lifting beam 101 that can run on the monorail track 100 through the connecting hole 12-1 on its connecting lug 12. It is located below the hydraulic lifting beam 101. The oil nozzles 14-4 of the two double-headed oil cylinders 14 of the automatic grabbing lifting device 1 are connected to the monorail power car (not shown in the figure) in the monorail system by fluid connection to complete the installation of the automatic grabbing lifting device 1.

[0056] The following explanation of the automatic ground-to-air transfer of container 2 is based on the different starting and ending positions of container 2 during the actual transfer process.

[0057] Firstly, the starting point for transshipment of container 2 is the ground above a monorail track 100, and the ending point is on the dedicated mining car 3.

[0058] Under the control of the monorail crane, the hydraulic lifting beam 101 moves to above the container 2. The monorail crane controls the hydraulic lifting beam 101 to lower the automatic gripping spreader 1. The insertion guides 16 at the four corners of the automatic gripping spreader 1 can compensate for the positional deviation with the container 2, guiding the spreader to be accurately lowered onto the container 2. The automatic gripping spreader 1 presses down on the pressure rod 22-1 of the automatic docking mechanism 22 of the container 2, causing the rotary lock 22-7 to rotate and change its state. After the automatic gripping spreader 1 is docked with the container 2, the four pins 15 of the automatic gripping spreader 1 are aligned with the hook holes 21-6-1 of the hook ears 21-6 at the four corners of the container 2. Then, the monorail power vehicle supplies oil to the rodless chambers of the two double-headed cylinders 14. The two piston rods 14-2 of each of the two double-headed cylinders 14 extend outward, driving the pins 15, which are fixedly installed on the four cylinder connecting sleeves 14-3, to extend outward. The four pins 15 extending outward are inserted into the corresponding hook holes 21-6-1 of the hook ears 21-6 of the container 2. The automatic grabbing spreader 1 completes the automatic grabbing of the container 2. Then, the monorail power vehicle controls the hydraulic lifting beam 101 to lift the automatic grabbing spreader 1 of this embodiment together with the container 2 and move it to above the special mining car 3 that is stopped on the ground rail 102 and waiting for the relay transportation.

[0059] At this time, the monorail power vehicle controls the hydraulic lifting beam 101 to lower the automatic gripping spreader 1 and the container 2 together. During the lifting and lowering of the container 2, the pressure bar 22-1 of the automatic docking mechanism 22 of the container 2 is constantly pressed down by the automatic gripping spreader 1, causing the two tangential planes 27-2-1 of the lock head 27-2 of the twist lock 22-7 to be parallel to the oblong holes 32-1 on the connecting plate 32 of the special mining car 3. The four lower corner pieces 21-1-3 of the container are... Guided by the guide seats 33 of the four container lower corner fittings of the special mining car 3, the lock head 22-7-2 of the rotary lock 22-7 is aligned with the oblong hole 32-1 of the special mining car 3 and smoothly extends downwards from the body 31 through each oblong hole 32-1; after the monorail hoisting device 101 places the container 2 on the special mining car 3, the monorail hoisting power car supplies oil to the piston rod chambers of the two double-headed cylinders 14 of the automatic gripping device 1, and the two piston rods 14-2 of each of the two double-headed cylinders 14 move downwards. The cylinder 14-1 retracts, and all four pins 15 slide out of the hook-up holes 21-6-1 of the hook-up ears 21-6 of the container 2, disengaging from the hook-up. The automatic gripping spreader 1 completes the automatic release of the container 2. Finally, the monorail power vehicle controls the hydraulic lifting beam 101 to lift the automatic gripping spreader 1 and disengage it from the container 2. The pressure on the pressure rod 22-1 of the automatic docking mechanism 22 disappears, and the return spring 22-4 drives the guide rod 22-2 and the connecting piece 22. -5 and guide pin 22-6 move upward, and the locking head 22-7-2 of the rotary lock 22-7 rotates 90°, causing the two tangential planes 22-7-2-1 of the locking head 22-7-2 and the oblong hole 32-1 on the connecting plate 32 of the special mining car 3 to change from parallel to intersecting, thereby automatically locking the container 2 to the special mining car 3. The four container lower corner guide seats 33 of the special mining car 3 also limit the four lower corner parts 21-1-3 of the container. At this time, the container 2 can be transferred by the special mining car 3 on the ground rail 102.

[0060] Secondly, the starting point for transshipment of container 2 is on the dedicated mining car 3, and the ending point for transshipment is on the ground above the monorail 100.

[0061] Under the control of the monorail power vehicle, the hydraulic lifting beam 101 moves to above the container 2, which is located on the special mining car 3 and locked to it. The hydraulic lifting beam 101 lowers the automatic gripping spreader 1, and the automatic gripping spreader 1 presses down on the pressure rod 22-1 of the automatic docking mechanism 22 of the container 2, causing the rotary lock 22-7 to rotate. The lock head 22-7-2 of the rotary lock 22-7 rotates 90°, so that the two tangential planes 22-7-2-1 of the lock head 22-7-2 intersect with the waist-shaped hole 32-1 on the connecting plate 32 of the special mining car 3, locking the direction. The direction is changed to parallel, thereby releasing the locking connection between container 2 and special mining car 3. After the automatic gripping spreader 1 is docked with container 2, the four pins 15 of the automatic gripping spreader 1 are aligned and inserted with the hook holes 21-6-1 of the hook ears 21-6 at the four corners of container 2. The automatic gripping spreader 1 completes the automatic gripping of container 2. Then, the monorail power vehicle controls the hydraulic lifting beam 101 to lift the automatic gripping spreader 1 and container 2 together and move them to the ground above the transfer and transportation endpoint where the monorail track 100 is set above.

[0062] At this time, the monorail power vehicle controls the hydraulic lifting beam 101 to lower the automatic gripping spreader 1 and the container 2 together to the ground at the final transfer and transportation location. After the monorail power vehicle supplies oil to the piston rod chambers of the two double-headed cylinders 14 of the automatic gripping spreader 1, the two piston rods 14-2 of each of the two double-headed cylinders 14 retract into the cylinder body 14-1. All four pins 15 slide out from the hook holes 21-6-1 of the hook ears 21-6 of the container 2 and disengage. The automatic gripping spreader 1 completes the automatic release of the container 2. Then, the monorail power vehicle controls the hydraulic lifting beam 101 to lift the automatic gripping spreader 1 to disengage from the container 2. The pressure on the pressure rod 22-1 of the automatic docking mechanism 22 disappears. Under the action of the return spring 22-4, the lock head 22-7-2 of the rotary lock 22-7 rotates 90° to reset.

[0063] As can be seen from the foregoing, the automatic ground-to-air transfer device of the coal mine auxiliary transportation system in this embodiment can realize unmanned operation of each link of the ground-to-air transfer of the mining container 2 between the mining monorail and the special mining car 3. Compared with the existing technology where each link requires manual operation, it can significantly save manpower, significantly improve work efficiency, and significantly reduce safety accidents.

[0064] The above embodiments are descriptions of specific implementations of the present invention, and not limitations thereof. Those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. An automatic ground-to-air transfer device for a coal mine auxiliary transportation system, characterized in that: It includes containers for loading coal minerals and equipment for transfer, automatic grabbing and releasing devices that are installed on the hydraulic lifting beam of the coal mine monorail system during use, and special mining cars that run on the coal mine ground rail for relay transportation of the containers and can automatically dock and lock with the containers and automatically release docking and locking. The container includes a container body and an automatic docking mechanism that automatically docks and locks with the special mining car and automatically releases the docking lock when the automatic gripping spreader presses down and releases the container during use. The container body includes four main columns located at the four corners. Each main column includes a column body and upper and lower corner pieces fixedly located at the upper and lower ends of the column body, respectively. The automatic docking mechanism is provided in each main column. Each of the four upper corner pieces is fixedly provided with a hook ear for connecting with the automatic gripping spreader. The hook ear is provided with a hook hole. The automatic docking mechanism includes a retractable pressure rod located within the upper corner piece, a guide rod fixedly connected at its upper end to the pressure rod and located within the column, a guide sleeve fixedly located within the column for limiting and guiding the guide rod, a return spring for resetting the guide rod, a bearing fixedly located within the lower corner piece, a limiting sleeve sleeved with and rotatable by the bearing, a rotary lock with a spiral groove at its upper part and a lock head at its lower end fixedly connected to the limiting sleeve, a guide pin movably located within the spiral groove of the rotary lock, and a connector located within the column for connecting the guide pin to the guide rod. The automatic gripping spreader includes a main frame, connecting lugs fixedly mounted on the main frame for connection with a hydraulic lifting beam, a cylinder mounting bracket fixedly mounted on the lower left and right sides of the main frame, a double-headed cylinder mounted in the front and rear directions within each cylinder mounting bracket, a pin mounted on the front and rear sides of each double-headed cylinder for transmission connection, and a plug-in guide fixedly mounted on the lower front and rear sides of each cylinder mounting bracket; in use, driven by the double-headed cylinders, each pin can automatically engage and disengage with the corresponding hook hole of the container's hook lug; the plug-in guide is used to guide the automatic gripping spreader to dock with the container body.

2. The automatic ground-to-air transfer device for the coal mine auxiliary transportation system according to claim 1, characterized in that: The guide rod and the pressure rod are threaded together and locked by the provided adjusting nut; the lower end of the guide rod passes through the guide sleeve and is fixedly connected to the connector; the return spring is sleeved on the guide rod, and the upper and lower ends of the return spring elastically abut against the spring locking nut provided on the guide rod and the upper end of the guide sleeve, respectively; the connector is an inverted U-shaped structure, and the connector is fixedly connected to the lower end of the guide rod at the middle of its upper end, and the two ends of the guide pin are fixedly connected to the two sides of the lower end of the connector.

3. The automatic ground-to-air transfer device for the coal mine auxiliary transportation system according to claim 1, characterized in that: The rotary lock is a structural component consisting of the lock head and a lock rod located above the lock head, which are integrally or fixedly connected. The lock rod is cylindrical in shape, and the spiral groove is located on the upper part of the lock rod. The spiral groove is arranged on the upper part of the lock rod in an axial direction from top to bottom and radially inclined and through manner. The middle outer periphery of the lock rod is provided with an external thread that is fixedly connected to the limiting sleeve thread.

4. The automatic ground-to-air transfer device for the coal mine auxiliary transportation system according to claim 3, characterized in that: The locking rod is composed of a first rod portion located on the upper side and a second rod portion located on the lower side, which are integrally or fixedly connected. The diameter of the first rod portion is smaller than the diameter of the second rod portion. The spiral groove and external thread are both provided on the first rod portion. The locking head is a structural component with two parallel cutting planes cut axially on the outside of a cone.

5. The automatic ground-to-air transfer device for a coal mine auxiliary transportation system according to claim 1, characterized in that: Each of the two cylinder mounting brackets is provided with a pin through hole in the front and rear directions for the pin to extend and retract during operation; the double-headed cylinder has a cylinder body, two piston rods, and a cylinder connecting sleeve fixedly installed at the outer end of each of the two piston rods, and a pin is fixedly installed on each of the two cylinder connecting sleeves of the two double-headed cylinders.

6. The automatic ground-to-air transfer device for a coal mine auxiliary transportation system according to claim 5, characterized in that: Each of the two double-headed cylinders is equipped with a set of cylinder valves to prevent accidental backflow of hydraulic oil after oil enters the rodless chamber of the double-headed cylinder during use.

7. The automatic ground-to-air transfer device for a coal mine auxiliary transportation system according to any one of claims 1 to 6, characterized in that: The special mining car includes a body, connecting plates fixed at the four corners of the body, a container lower corner guide seat for guiding the docking of the container fixed on one side of each connecting plate, and wheels located under the body that run on the coal mine track during use; each connecting plate is provided with a waist-shaped hole for cooperating with a corresponding automatic docking mechanism of the container to automatically dock and lock the container with the special mining car and release the automatic docking lock.

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