Monorail crane for coal mine transportation
The adjustable hanging mechanism solves the problems of poor track compatibility and high derailment risk of traditional coal mine monorail cranes, and realizes dynamic adjustment and rigid fixation of the hoist basket, improving the adaptability and efficiency of underground transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山西潞安集团潞宁煤业有限责任公司
- Filing Date
- 2025-08-08
- Publication Date
- 2026-04-21
AI Technical Summary
The static frame design of traditional coal mine monorail cranes results in poor track compatibility and a high risk of derailment. The rigid connection of the hoist basket leads to weak spatial adaptability and low coordination efficiency, making it impossible to flexibly adapt to the complex underground environment.
An adjustable hanging mechanism is adopted, including a hydraulic adjustment component and a motor-driven height adjustment component, combined with a positioning component, to achieve dynamic adjustment and rigid fixation of the suspended platform, adapting to different track specifications and complex working conditions.
It improves track compatibility, reduces the risk of derailment, enhances spatial adaptability and collaborative transportation efficiency, and meets the flexible needs of multiple tasks underground.
Smart Images
Figure CN224147574U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of monorail crane technology, specifically, it relates to a monorail crane for coal mine transportation. Background Technology
[0002] A coal mine monorail crane is an explosion-proof lifting and transporting device specifically designed for the complex underground environment. Its main body is suspended from a single I-beam rail on the roof of the tunnel and is driven by an explosion-proof diesel engine, battery, or compressed air, allowing it to move flexibly along the rail. In coal mine applications, it is primarily used for the efficient and safe continuous transport of heavy materials underground.
[0003] Currently, traditional coal mine monorail cranes rely on rigid, fixed I-beam supports to carry the driven wheels, with both wheel gauge and diameter being non-adjustable static structures. This structure limits the crane system to a single type of monorail I-beam, requiring the entire support assembly to be replaced when different rail specifications need to be used in the underground roadway. At rail interfaces or in deformed sections of the roadway, the fixed driven wheels are prone to jamming or derailment due to rail width deviations or changes in rail inclination. Furthermore, the traditional system's baskets are primarily rigidly connected via stiff rods, locking the spacing between adjacent baskets after installation. This design reveals serious shortcomings in multi-task collaborative scenarios: First, in narrow bends or undulating slopes, the fixed spacing prevents the basket assembly from dynamically adjusting its posture, increasing the risk of lateral collisions or traction imbalances; second, when transporting extra-long equipment requires widening the basket spacing or densely lifting small materials requires narrowing the spacing, both necessitate stopping the machine to disassemble and reassemble the connecting mechanism, resulting in a high rate of wasted time.
[0004] Based on this, the present invention provides a monorail crane for coal mine transportation to solve the problems existing in the prior art. Utility Model Content
[0005] In view of this, the main purpose of this utility model is to provide a coal mine transportation monorail to solve the problems of poor track compatibility and high risk of derailment caused by the static hanging frame design of the current monorail; as well as the weak spatial adaptability and low collaborative efficiency caused by the rigid connection of the hanging basket.
[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0007] A monorail hoist for coal mine transportation includes a monorail I-beam track and a suspended platform. The monorail I-beam track is suspended below the roadway roof by anchoring rods. The suspended platform is suspended below the track by a hanging frame mechanism. The hanging frame mechanism includes a hanging frame and a height adjustment component. The hanging frame is slidably disposed below the monorail I-beam track and is provided with a positioning component. A spacing adjustment component is also provided between adjacent hanging frames. The height adjustment component is disposed at the lower end of the hanging frame and connected to the suspended platform.
[0008] In a preferred embodiment, the spacing adjustment assembly is a hydraulic adjustment assembly, including a piston rod and a connecting cylinder;
[0009] The piston rod is a hollow rod, and piston components are provided at both ends of the piston rod. The outer diameter of the piston component is interference-fitted with the inner wall of the connecting cylinder. The connecting cylinder is symmetrically sleeved at both ends of the piston rod and dynamically sealed to the piston rod through a sealing component. A spring is provided inside the far end of the connecting cylinder to match the piston component.
[0010] In a preferred embodiment, the piston rod has a plurality of oil holes on the side wall near the piston member.
[0011] In a preferred embodiment, the spring is located on the side away from the piston rod, and the overall length of the spacing adjustment assembly is at its longest when the spring is naturally extended.
[0012] In a preferred embodiment, a hydraulic oil port is further provided in the middle of the piston rod; a hinge plate is further provided on the outer side of the far end of the connecting cylinder, and the hinge plate is rotatably connected to a hinge seat provided on the bracket surface.
[0013] In a preferred embodiment, the height adjustment assembly includes a mounting shell, a motor, a hook, and a chain. The mounting shell is a hollow shell. The motor is located on the outside of the mounting shell and is connected to a rotating shaft that is rotatably disposed inside the mounting shell. One end of the chain is connected to the rotating shaft, and the other end passes through to the outside of the through hole and is connected to the hook. The hook is matched with the suspended basket.
[0014] In a preferred embodiment, the upper end of the mounting housing is provided with a connecting plate, which is connected to the lower end of the bracket by a screw connector.
[0015] In a preferred embodiment, the lower sidewall of the mounting housing is provided with a through hole that matches the chain.
[0016] In a preferred embodiment, the positioning component is movably disposed within a groove on the hanger and matches the inner side of the flange of the monorail I-beam rail.
[0017] In a preferred embodiment, the positioning assembly includes a positioning adjustment bolt, a positioning plate, and a wheel axle; the wheel axle is movably disposed within a groove, and a driven wheel is rotatably disposed at one end of the wheel axle, contacting the inner side of the flange of the monorail I-beam rail; the positioning plate is movably sleeved on the outside of the wheel axle, and a positioning insert is disposed on the inner side of the positioning plate, matching a positioning slot disposed on the outer surface of the bracket; the positioning adjustment bolt is disposed at the end of the wheel axle away from the driven wheel, and is threadedly connected to the wheel axle.
[0018] Compared with the prior art, this utility model provides a monorail crane for coal mine transportation, which has the following beneficial effects:
[0019] 1. The positioning component adjusts the position of the wheel axle horizontally through the slide groove, so that the driven wheel can be adapted to various specifications of monorail I-beam rails; overcoming the defect of traditional fixed brackets that can only match a single rail type.
[0020] 2. The hydraulically driven spacing adjustment component can dynamically compress the spring to shorten the spacing, or depressurize and reset to extend the spacing; eliminating the risk of basket collision caused by traditional rigid linkages in roadway bends or slopes.
[0021] 3. The motor-driven winding and unwinding of the chain around the shaft enables stepless adjustment of the suspended platform height; it can replace the traditional manual chain adjustment and meet the rapid adaptation needs of oversized equipment such as hydraulic supports.
[0022] 4. The threaded locking mechanism of the positioning component enables the positioning block and slot to engage rigidly, suppressing vibration displacement; it eliminates the risk of derailment in track joints or deformation sections of traditional hangers. It solves the problems of poor track compatibility and high derailment risk caused by the static hanger design of current monorail systems, as well as the weak spatial adaptability and low coordination efficiency caused by rigid connection of the hanging basket. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of the coal mine transportation monorail system of this utility model;
[0025] Figure 2 This is a structural schematic diagram of a single transport monorail crane according to this utility model;
[0026] Figure 3 This is a schematic diagram of the structure of the hanging bracket of this utility model;
[0027] Figure 4 This is a sectional view of the hanging bracket of this utility model from a side angle;
[0028] Figure 5 This is a schematic diagram of the positioning plate of this utility model;
[0029] Figure 6 This is a schematic diagram of the height adjustment component of this utility model;
[0030] Figure 7This is a cross-sectional view of the mounting shell of this utility model;
[0031] Figure 8 This is a schematic diagram of the spacing adjustment component of this utility model;
[0032] Figure 9 This is a cross-sectional view of the spacing adjustment component of this utility model;
[0033] Figure 10 This utility model Figure 9 A magnified view of a portion of point A in the middle.
[0034] [Explanation of Key Component Symbols]
[0035] 1. Single-rail I-beam track; 2. Suspended platform; 3. Anchor rod; 4. Hanger; 41. Slide groove; 42. Positioning slot; 5. Spacing adjustment assembly; 51. Piston rod; 511. Hydraulic oil interface; 512. Oil hole; 52. Connecting cylinder; 53. Seal; 54. Piston component; 55. Spring; 6. Height adjustment assembly; 61. Mounting housing; 611. Connecting plate; 612. Through hole; 62. Motor; 63. Hook; 64. Chain; 65. Rotary shaft; 7. Positioning assembly; 71. Positioning adjustment bolt; 72. Washer ring; 73. Positioning plate; 731. Positioning insert; 74. Driven wheel; 75. Axle. Detailed Implementation
[0036] The structure of the monorail crane for coal mine transportation will be further described in detail below with reference to the accompanying drawings and embodiments of this utility model.
[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0040] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0041] As per the instruction manual Figures 1-10 As shown, this utility model provides a technical solution:
[0042] A monorail hoist for coal mine transportation includes a monorail I-beam track 1 and a suspended platform 2. The monorail I-beam track 1 is suspended below the tunnel roof via anchoring rods 3, serving as the load-bearing running track for the suspended platform 2. The suspended platform 2 is installed below the track 1 via a hanging frame mechanism to transport materials underground. The hanging frame mechanism includes a hanging frame 4 and a height adjustment component 6. The hanging frame 4 is slidably installed below the monorail I-beam track 1 and can slide along the track 1. A positioning component 7 is provided on the hanging frame 4. A spacing adjustment component 5 is also provided between adjacent hanging frames 4. The spacing adjustment component 5 is used to dynamically adjust the spacing between adjacent hanging frames 4 through a telescopic structure, allowing the suspended platform 2 group to flexibly adapt to tunnel turns and slope changes. The height adjustment component 6 is installed at the lower end of the hanging frame 4 and connected to the suspended platform 2, used to adjust the height of the suspended platform 2 according to transportation needs during use. By using the spacing adjustment component 5 in conjunction with the height adjustment component 6, vertical space can be expanded for large equipment or spacing can be compressed for dense transportation. After adjustment, the positioning component 7 can immediately lock the hanger 4, forming a dual protection mechanism of "dynamic adjustment - rigid fixation", which significantly improves the compatibility and safety of multi-specification tracks and complex working conditions.
[0043] In a preferred embodiment, such as Figure 1 , Figure 8 , Figure 9 and Figure 10 As shown, the spacing adjustment component 5 is a hydraulic adjustment component, including a piston rod 51 and a connecting cylinder 52.
[0044] The piston rod 51 is a hollow rod-shaped structure. Piston components 54 are provided at both ends of the piston rod 51. The outer diameter of the piston component 54 is interference-fitted with the inner sidewall of the connecting cylinder 52. Several oil holes 512 for high-pressure hydraulic oil to enter and exit are provided on the sidewall of the piston rod 51 near the piston component 54. The connecting cylinder 52 is symmetrically sleeved on both ends of the piston rod 51 and is dynamically sealed to the piston rod 51 through the sealing component 53. A spring 55 is installed inside the far end of the connecting cylinder 52 to cooperate with the piston component 54. The spring 55 is located on the side away from the piston rod 51. When the spring 55 is naturally extended, the overall length of the adjusting assembly 5 reaches its maximum.
[0045] In the above description, during adjustment, high-pressure oil is injected into the inner cavity of the piston rod 51 and flows into the cavity of the connecting cylinder 52 on the side of the piston 54 through the oil hole 512. The hydraulic oil pressure pushes the piston 54 to compress the spring 55, causing the cavity of the connecting cylinder 52 to expand and contract towards the center of the piston rod 51, resulting in a shortening of the total length of the spacing adjustment assembly 5, thereby reducing the spacing between adjacent brackets 4. After depressurization, the spring 55 rebounds and pushes the piston 54 back to its original position, and the assembly extends. This design achieves bidirectional length adjustment through active hydraulic compression and passive spring reset, enabling precise control of the layout of the suspended platform group.
[0046] Specifically, such as Figure 9 and Figure 10 As shown, a hydraulic oil interface 511 is also provided in the middle of the piston rod 51 for connecting an external high-pressure hydraulic oil supply mechanism to adjust the length of the spacing adjustment component 5.
[0047] Specifically, such as Figure 1 , Figure 8 and Figure 9 As shown, a hinge plate is also provided on the outer side of the far end of the connecting cylinder 52. The hinge plate is rotatably connected to the hinge seat provided on the surface of the hanger 4, so as to realize the installation of the spacing adjustment component 5 between two adjacent hangers 4.
[0048] Specifically, such as Figure 1 , Figure 8 and Figure 9 As shown, the piston 54 is preferably made of rubber.
[0049] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the height adjustment assembly 6 includes a mounting shell 61, a motor 62, a hook 63, and a chain 64. The mounting shell 61 is a hollow shell with a connecting plate 611 at its upper end. Bolt holes are pre-drilled at the four corners of the connecting plate 611, allowing it to be detachably fixed to the lower end of the hanging bracket 4 using fasteners 66 (such as bolts). A through hole 612 is provided on the lower side wall of the mounting shell 61 to cooperate with the chain 64, allowing the chain 64 to move vertically. The motor 62 is fixedly mounted on the outside of the mounting shell 61, and its output shaft is keyed to a rotating shaft 65 located inside the mounting shell 61. The rotating shaft 65 is rotatably mounted inside the mounting shell 61, and is driven to rotate by the motor 62 during use. One end of the chain 64 is fixedly connected to the rotating shaft 65, and the other end passes through the through hole 612 and connects to the hook 63. The hook 63 cooperates with the hanging basket 2.
[0050] Specifically, such as Figure 7 As shown, the axial shaft 65 is rotatably mounted in the mounting housing 61 via a bearing.
[0051] In a preferred embodiment, such as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the positioning component 7 is movably installed in the slide groove 41 on the bracket 4, which facilitates the adjustment of the position of the positioning component 7 in the slide groove 41 according to the usage requirements during use, so that the driven wheel 74 can contact the inner side of the wing plate of the monorail I-beam rail 1, thereby fixing the bracket 4 and ensuring the stability of the bracket 4, so that the bracket 4 can move stably along the monorail I-beam rail 1 during use, and can be used with different types of monorail I-beam rails 1.
[0052] Specifically, the positioning assembly 7 includes a positioning adjustment bolt 71, a positioning plate 73, and a wheel axle 75. The wheel axle 75 is movably mounted within the slide groove 41, and a driven wheel 74 is rotatably mounted at one end of the wheel axle 75, contacting the inner side of the flange of the monorail I-beam track 1. The positioning plate 73 is movably sleeved on the outside of the wheel axle 75, and a positioning insert 731 is provided on the inner side of the positioning plate 73 to cooperate with a positioning slot 42 provided on the outer surface of the hanger 4. The positioning adjustment bolt 71 is located at the end of the wheel axle 75 away from the driven wheel 74 and is threadedly connected to the wheel axle 75. In use, after adjusting the wheel axle 75 to the desired position, rotating the wheel axle 75 forces the positioning plate 73 to move along the direction closer to the hanger 4, causing the positioning insert 731 to insert into the positioning slot 42, thus positioning the driven wheel 74. This structure achieves hard locking through the mechanical force of the thread, keeping the driven wheel 74 and the wing plate of the track 1 under constant pressure, which eliminates running swerve and prevents derailment, forming a rigid positioning system that can be repeatedly adjusted.
[0053] Specifically, a washer 72 is movably sleeved on the outside of the axle 75 between the positioning adjustment bolt 71 and the positioning plate 73, so as to ensure the uniformity of force between the positioning adjustment bolt 71 and the positioning plate 73.
[0054] The usage process and operating principle of the coal mine transport monorail described in this utility model include:
[0055] Installation process:
[0056] Step 1: Track installation. The monorail I-beam track 1 is suspended from the top of the tunnel using anchoring rods 3.
[0057] Step 2: Hanger positioning: Slide the hanger 4 to the target position on the track 1, turn the positioning adjustment bolt 71 to push the positioning plate 73, so that the positioning block 731 is embedded into the positioning slot 42 of the hanger 4, and lock the position of the driven wheel 74.
[0058] Step 3: Adjust the hanging basket;
[0059] Height adjustment: Start motor 62 to drive the chain 64 to wind / release around shaft 65, and raise and lower basket 2 to the desired height via hook 63;
[0060] For spacing adjustment, high-pressure oil is injected into the piston rod 51 of the spacing adjustment component 5, which pushes the piston 54 to compress the spring 55 and shorten the spacing between adjacent brackets 4 (after depressurization, the spring 55 returns to its original position and extends the spacing).
[0061] Step 4: Material transportation: After the basket 2 is loaded with materials, the drive system (existing technology, not shown in the figure) pulls the hanger 4 to run along the track 1 to complete the transportation in the tunnel.
[0062] Working principle:
[0063] (1) Track compatibility: The positioning component 7 adjusts the position of the driven wheel 74 horizontally through the slide groove 41 to adapt to different rail widths; the threaded locking ensures constant pressure between the wheel and rail to prevent derailment;
[0064] (2) Flexible layout: The hydraulically driven spacing adjustment component 5 (piston rod 51 / connecting cylinder 52) actively compresses the spring 55 to realize the reduction of the distance of the bracket 4, and the spring potential energy resets and expands the distance; the height adjustment component 6 is driven by the motor 62-rotating shaft 65-chain 64 to precisely control the vertical space of the basket 2;
[0065] (3) Stable transmission:
[0066] The positioning block 731 engages with the slot 42 to form a rigid constraint, suppressing operational vibration;
[0067] The through-hole 612 guides the vertical movement of the chain 64 to prevent the basket 2 from swinging.
[0068] The screw connector 66 enables modular assembly and disassembly, allowing for quick switching of transportation tasks.
[0069] (4) Technology closed loop: Hydraulic / electromechanical collaboration realizes three-dimensional dynamic adjustment of "track-hanger-basket", overcoming the problems of adaptability and safety in complex underground working conditions.
[0070] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.
Claims
1. A coal mine transport monorail, comprising a monorail I-beam track (1) and a basket (2), the monorail I-beam track (1) is suspended under the side of the roadway roof by anchoring pull rods (3), characterized in that, The suspended basket (2) is suspended below the track (1) by a hanging frame mechanism. The hanging frame mechanism includes a hanging frame (4) and a height adjustment component (6). The hanging frame (4) is slidably disposed on the lower side of the single-rail I-beam track (1), and a positioning component (7) is provided on the hanging frame (4). A spacing adjustment component (5) is also provided between adjacent hanging frames (4). The height adjustment component (6) is disposed at the lower end of the hanging frame (4) and is connected to the suspended basket (2).
2. A coal mine transport monorail as claimed in claim 1 wherein, The spacing adjustment component (5) is a hydraulic adjustment component, including a piston rod (51) and a connecting cylinder (52). The piston rod (51) is a hollow rod, and piston parts (54) are provided at both ends of the piston rod (51). The outer diameter of the piston parts (54) is interference-fitted with the inner wall of the connecting cylinder (52). The connecting cylinder (52) is symmetrically sleeved at both ends of the piston rod (51) and achieves dynamic sealing connection with the piston rod (51) through the sealing part (53). A spring (55) is provided inside the far end of the connecting cylinder (52) to match the piston parts (54).
3. A coal mine transport monorail as claimed in claim 2 wherein, The piston rod (51) has several oil holes (512) on the side wall of the end near the piston (54).
4. A coal mine transport monorail as claimed in claim 2 wherein, The spring (55) is located on the side away from the piston rod (51), and the overall length of the pitch adjustment assembly (5) is at its longest when the spring (55) is naturally extended.
5. A coal mine transport monorail as claimed in claim 2 wherein, The piston rod (51) is also provided with a hydraulic oil interface (511) in the middle; the connecting cylinder (52) is also provided with a hinge plate on the far side, and the hinge plate is rotatably connected to the hinge seat provided on the surface of the hanger (4).
6. A coal mine transport monorail as claimed in claim 1 wherein, The height adjustment assembly (6) includes a mounting shell (61), a motor (62), a hook (63), and a chain (64). The mounting shell (61) is a hollow shell. The motor (62) is located on the outside of the mounting shell (61) and is connected to a rotating shaft (65) that is rotatably located inside the mounting shell (61). One end of the chain (64) is connected to the rotating shaft (65), and the other end passes through to the outside of the through hole (612) and is connected to the hook (63). The hook (63) matches the basket (2).
7. A coal mine transport monorail as described in claim 6, characterized in that, The upper end of the mounting shell (61) is provided with a connecting plate (611), and the connecting plate (611) is connected to the lower end of the bracket (4) by a screw (66).
8. A coal mine transport monorail as claimed in claim 6 wherein, The mounting housing (61) has a through hole (612) on its lower side wall, which is matched with the chain (64).
9. A coal mine transport monorail as claimed in claim 1 wherein, The positioning component (7) is movably disposed in the groove (41) on the bracket (4) and matches the inner side of the wing plate of the monorail I-beam rail (1).
10. A coal mine transport monorail as claimed in claim 9 wherein, The positioning assembly (7) includes a positioning adjustment bolt (71), a positioning plate (73), and a wheel axle (75). The wheel axle (75) is movably disposed in the slide groove (41), and a driven wheel (74) is rotatably disposed at one end of the wheel axle (75) to contact the inner side of the flange of the monorail I-beam rail (1). The positioning plate (73) is movably sleeved on the outside of the wheel axle (75), and a positioning insert (731) is disposed on the inside of the positioning plate (73) to match the positioning slot (42) disposed on the outer surface of the hanger (4). The positioning adjustment bolt (71) is disposed at the end of the wheel axle (75) away from the driven wheel (74) and is threadedly connected to the wheel axle (75).