Monorail crane lifting beam for mine car
By designing a monorail lifting beam for mine cars, using a structure composed of main beams and auxiliary beams, the problems of uneven load and swaying of mine cars in traditional monorail systems are solved, thereby improving the stability and safety of mine car transportation.
Patent Information
- Application Number
- CN202520641386.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-04-08
AI Technical Summary
In traditional monorail systems, the chain connection point is located on the upper plane of the mine car body, resulting in uneven load distribution. During the lifting process, the mine car is prone to lateral swaying and longitudinal shaking, and there is a lack of effective anti-sway control, which poses a safety hazard.
Design a monorail hoisting beam for mine cars. The structure consists of a main beam and auxiliary beams, with each set of auxiliary beams corresponding to one mine car. The lifting holes are connected to the lifting chain, and the lifting frame is connected to the lifting hook of the monorail hoist. It can lift two mine cars at a time, preventing swaying and tilting. I-beams and reinforcing plates are used to enhance the structural stability.
It effectively prevents mining cars from shaking and tilting during transportation, improves transportation safety and stability, reduces the risk of chain derailment, and has a simple structure suitable for long-term use in mining environments.
Smart Images
Figure CN223852071U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of mine transportation, in particular to a monorail hoist lifting beam for mine car. BACKGROUND
[0002] In mine transportation operation, mine car as the main transportation carrier, its safe and efficient transportation mode has important influence on mine production. At present, the industry generally adopts the combined transportation mode of track transportation and monorail hoist transportation, and the monorail hoist system plays an important role in roadway transportation due to its flexibility and space adaptability. However, in the traditional monorail hoist transportation operation, the lifting mode of directly connecting the mine car body by hoisting chain is usually adopted, which has significant technical defects in practical application.
[0003] In the prior art, the hoisting chain connection point of the monorail hoist system is usually located on the upper plane of the mine car body, and this connection mode is easy to cause uneven load distribution in the lifting process. Especially when passing through the roadway curve, slope or undulating section, the mine car is easily subjected to the combined action of inertial force and gravity component force, which causes transverse swing and longitudinal swing, resulting in the center of gravity offset exceeding the safety threshold. This dynamic imbalance not only causes stress concentration of the mine car body structure, but also may cause serious transportation accidents such as mine car derailment and rollover.
[0004] In addition, the traditional monorail hoist system lacks special adaptive device, and the connection of hoisting chain and mine car is usually multi-point dispersed fixed. Under this connection mode, the stress of each hoisting chain is difficult to accurately balance, which easily causes imbalance of lifting moment, and lacks effective anti-swing control mechanism, which cannot inhibit the uncontrolled swing of the mine car in the transportation process. CONTENT OF THE UTILITY MODEL
[0005] The embodiment of the present application provides a monorail hoist lifting beam for mine car, which connects the mine car and the monorail hoist through the lifting beam, and improves the stability in the transportation process of the mine car, so as to solve the problems of uneven stress of hoisting chain and swing of mine car under the connection of hoisting chain and mine car by monorail hoist.
[0006] The embodiment of the present application provides a monorail hoist lifting beam for mine car, which includes a main beam, at least two groups of auxiliary beams are arranged on the main beam;
[0007] Each group of auxiliary beams includes at least two mutually parallel auxiliary beams, the auxiliary beams are perpendicular to the main beam, and the auxiliary beams are fixedly connected with the main beam;
[0008] The lifting brackets are fixedly installed at positions close to the end portions of the main beam;
[0009] Hoisting holes are formed at two ends of the auxiliary beam.
[0010] In a possible implementation manner, the lifting bracket includes a fixed block, and the fixed block is fixedly connected with the top surface of the main beam.
[0011] The middle part of the fixed block is provided with a sleeve, which is fixedly connected with the fixed block and parallel to the auxiliary beam.
[0012] In a possible implementation, the sleeve is connected with the lifting hook of the monorail crane through a shackle.
[0013] In a possible implementation, the distance between the lifting holes at the two ends of each auxiliary beam is less than the width of the mine car.
[0014] In a possible implementation, the lifting holes are connected with the lifting chain through shackles.
[0015] In a possible implementation, the main beam and the auxiliary beam are both I-shaped steel.
[0016] In a possible implementation, the lifting holes are provided with reinforcing plates on both sides, and the reinforcing plates are fixedly connected with the auxiliary beam.
[0017] In a possible implementation, the main beam and the auxiliary beam are welded.
[0018] The monorail crane lifting beam for mine cars provided by the embodiment of the application can connect two mine cars at the same time, effectively prevent the mine cars from shaking and tilting during transportation, ensure the safety and stability of transportation, and has simple structure and high stability, and can be used in a mine environment for a long time. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 is a structural schematic diagram of the monorail crane lifting beam for mine cars provided by an embodiment of the application;
[0020] Fig. 2 is a schematic diagram of a use state of the monorail crane lifting beam for mine cars provided by an embodiment of the application;
[0021] Fig. 3 is another schematic diagram of a use state of the monorail crane lifting beam for mine cars provided by an embodiment of the application.
[0022] Explanation of reference signs:
[0023] 100-main beam; 200-auxiliary beam; 300-lifting bracket; 400-lifting hole; 500-reinforcing plate;
[0024] 310-fixed block; 320-sleeve. DETAILED DESCRIPTION
[0025] In order to make the person skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.
[0026] Fig. 1 is a structural schematic diagram of a single-track hoist lifting beam for a mine car provided by an embodiment of the present application. Fig. 2 is a use state schematic diagram of a single-track hoist lifting beam for a mine car provided by an embodiment of the present application. Fig. 3 is another use state schematic diagram of a single-track hoist lifting beam for a mine car provided by an embodiment of the present application. As shown in Figs. 1 to 3 , the present application provides a single-track hoist lifting beam for a mine car, which comprises a main beam 100, and at least two groups of auxiliary beam groups are arranged on the main beam 100;
[0027] Each group of auxiliary beam groups comprises at least two mutually parallel auxiliary beams 200, the auxiliary beams 200 are all perpendicular to the main beam 100, and the auxiliary beams 200 are all fixedly connected with the main beam 100;
[0028] The main beam 100 is fixedly installed with a lifting frame 300 at a position close to an end;
[0029] The auxiliary beam 200 is provided with a lifting hole 400 at each end.
[0030] In the above embodiment, each group of auxiliary beam groups corresponds to one mine car, the distance between the two auxiliary beams 200 located at the outermost sides in each group of auxiliary beam groups is less than the length of the mine car, the lifting hole 400 on the auxiliary beam 200 is connected with a lifting chain connected with the mine car, and the lifting frame 300 is connected with a lifting hook of a single-track hoist, so that two mine cars can be lifted at one time, the mine car can be effectively prevented from shaking and tilting during transportation, the safety and stability of transportation are ensured, the structure is simple, the stability is strong, and the single-track hoist lifting beam for a mine car can be used for a long time in a mine environment.
[0031] Taking the example that two groups of auxiliary beam groups are arranged on the main beam 100 and each group of auxiliary beam groups comprises two auxiliary beams 200. The length direction of all the auxiliary beams 200 is perpendicular to the length direction of the main beam 100, and the connecting point of the auxiliary beam 200 and the main beam 100 is located at the middle part of the auxiliary beam 200. The lifting hole 400 is connected with the lifting chain, the lifting frame 300 is connected with the lifting hook of the single-track hoist, and the lifting chain is connected with the mine car, so that two mine cars can be lifted at one time.
[0032] It should be noted that the two adjacent mine cars are connected and locked by a ring chain, which can prevent the mine cars from moving forward and backward, thereby avoiding the mine cars from being pulled out of the lifting chain. The locking can be achieved by a latch, which can conveniently realize the connection or separation between the two mine cars.
[0033] In some specific examples, the two adjacent mine cars are connected by a three-ring chain locking device, and the locking latch is automatically locked by a spring buckle after being inserted. The locking force matches the carrying capacity of the lifting frame 300. The locking point is located 200 mm below the center line of the mine car connector and coincides with the vertical force axis of the lifting frame 300, further eliminating the tendency of the mine car to move.
[0034] In some examples, the lifting frame 300 includes a fixed block 310 fixedly connected to the top surface of the main beam 100.
[0035] The middle part of the fixed block 310 is provided with a sleeve 320, which is fixedly connected to the fixed block 310, and the sleeve 320 is parallel to the auxiliary beam 200.
[0036] It should be noted that the fixed block 310 is made of high-strength alloy steel and is cast. The bottom surface is permanently fixedly connected to the top surface of the main beam 100 by full welding process, which ensures that the load transmission path of the lifting frame 300 and the main beam 100 is continuous and has no stress concentration. The cross section of the fixed block 310 is rectangular, the length direction is consistent with the axis of the main beam 100, the width is adapted to the cross section size of the main beam 100, and weight reduction grooves are processed on both sides to reduce the overall weight while retaining sufficient shear strength. The sleeve 320 is made of seamless steel pipe, the inner wall is quenched to improve wear resistance, and the axis direction is parallel to the auxiliary beam 200. The sleeve 320 is embedded in the middle part of the fixed block 310 by interference fit, and is double-fixed by annular weld. In some specific examples, the outer diameter of the sleeve 320 is 75 mm, the inner diameter is 45 mm, and the length is 40 mm.
[0037] In other examples, the cross section of the fixed block 310 can also be I-shaped. This application does not limit this, as long as it can meet the specific working strength.
[0038] In the above embodiment, the parallel arrangement of the sleeve 320 and the auxiliary beam 200 makes the force direction of the hanger 300 perpendicular to the bearing surface of the auxiliary beam 200, which can avoid local deformation caused by moment deviation. The rigid connection of the fixing block 310 and the sleeve 320 forms a “box-type bearing unit”, which can uniformly disperse the vertical lifting force of the monorail crane to the cross section of the main beam 100, thereby significantly reducing the bending stress of the main beam 100. The sleeve 320 extends to the outside of the fixing block 310 by 5-10 mm, forming a guide flange, which plays a role in centering and positioning when connecting the shackle, preventing the impact of unbalanced load in the initial stage of hoisting.
[0039] When the main beam 100 is configured with two groups of auxiliary beams (each group containing two auxiliary beams 200), the fixing block 310 of the hanger 300 is symmetrically arranged along the length direction of the main beam 100 at a distance of 1 / 4 beam length from the end. Each mine car is connected to four lifting chains (two on each side) through the lifting holes 400 on the two auxiliary beams 200, and the lower end of the lifting chain is locked with the mine car wheel pair groove through the shackle. At this time, the parallel design of the sleeve 320 and the auxiliary beam 200 makes the lifting chain tension of the two mine cars evenly distributed, so that the mine cars can still maintain a horizontal attitude even if there is a slope or a curve in the roadway, and the maximum lateral deviation is not more than 3°.
[0040] In some examples, the sleeve 320 is connected to the lifting hook of the monorail crane through the shackle.
[0041] It should be noted that the shackle is selected to be an alloy steel forged bow-shaped shackle (such as G2130 type), with a rated load of 20 tons. The opening width of the shackle is matched with the outer diameter of the sleeve 320, so that the shackle can be freely inserted into the sleeve 320 without radial gap. The cross pin of the shackle adopts a threaded locking structure, the outer surface of the pin body is processed with anti-slip knurling, and the end is provided with a safety hole to form a double anti-loose protection after the split pin is inserted. During assembly, the shackle body is inserted downward from the top of the sleeve 320, the cross pin is inserted from the side and locked, so that the shackle and the sleeve 320 form a rigid hinge, allowing the lifting hook to swing freely within a range of ±15°, while limiting excessive deflection.
[0042] In the above embodiment, the rated load of the shackle is 2.5 times the actual maximum lifting load, and the double safety locking mechanism significantly reduces the risk of unhooking. The limited swing angle of the shackle allows the lifting hook to adaptively adjust the direction at the curve of the roadway, avoiding chain twisting or stress concentration caused by rigid connection. The cross pin of the shackle adopts a quick release design, which can be replaced by only pulling out the split pin and unscrewing the threads. The disassembly time of a single shackle is not more than 3 minutes, which significantly reduces the maintenance cost.
[0043] In some examples, the distance between the lifting holes 400 at both ends of each auxiliary beam 200 is less than the width of the mine car.
[0044] It should be noted that the center distance of the lifting hole 400 at both ends of each auxiliary beam 200 is set to be 95%-98% of the width of the mine car. For example, when the standard width of the mine car is 880mm, the distance between the lifting holes 400 is 835-840mm, which is slightly smaller than the actual width of the mine car.
[0045] In the above embodiment, the difference between the distance of the lifting hole 400 and the standard width of the mine car is compensated by the pre-tightening force of the lifting chain. When the lifting chain passes through the lifting hole 400 and is connected to the mine car, the lifting chain generates an inward tension due to the reduced distance, forcing the mine car to be balanced on both sides, forming a "self-tightening" effect, and significantly inhibiting lateral shaking.
[0046] In some examples, the lifting hole 400 is connected to the lifting chain by a shackle.
[0047] In the above embodiment, by connecting the lifting chain through the shackle, the disassembly time of the lifting hole 400 and the lifting chain can be shortened, which is beneficial to improve the hoisting efficiency of the mine car.
[0048] In some examples, the main beam 100 and the auxiliary beam 200 are both I-beams.
[0049] In the above embodiment, I-beams are selected as the materials of the main beam 100 and the auxiliary beam 200. Due to their high strength and good stability, they can effectively withstand the weight and impact force of the mine car during hoisting and transportation. In addition, the cross-sectional shape of the I-beam allows it to better distribute the stress during hoisting, reducing material waste and improving the overall performance of the hoisting beam.
[0050] It should be noted that the lifting hole 400 is provided on the auxiliary beam 200, and the lifting hole 400 is provided on the vertical beam of the auxiliary beam 200. In order to increase the structural strength of the area of the lifting hole 400, a reinforcing plate 500 is provided on both sides of the lifting hole 400, and the reinforcing plate 500 is welded with the vertical beam of the auxiliary beam 200. The middle part of the reinforcing plate 500 is provided with the same lifting hole 400, and the lifting hole 400 is coaxially arranged with the lifting hole 400 on the auxiliary beam 200.
[0051] In some examples, the main beam 100 and the auxiliary beam 200 are welded.
[0052] In the above embodiment, welding can ensure the close connection between the main beam 100 and the auxiliary beam 200, and can ensure that the hoisting beam will not cause the mine car to lose stability or derail due to loosening or failure of the connection during hoisting and transportation.
[0053] In some specific examples, in order to ensure the welding quality, appropriate welding process and welding material are usually used, such as carbon dioxide gas shielded welding. This welding method has high crack resistance and good weld transition effect, which can ensure that the structure after welding has sufficient strength and stability.
[0054] It is easy to understand that the skilled in the art can combine, split, recombine, etc. the embodiments of the present application on the basis of the several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.
[0055] The above detailed description of the specific embodiments of the present application has further detailed the purposes, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above is only a specific implementation of the embodiments of the present application and is not used to limit the protection scope of the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.
Claims
1. A monorail hoist beam for a mine car, characterized by, The main beam (100) is provided with at least two groups of auxiliary beam groups; Each group of auxiliary beam groups comprises at least two mutually parallel auxiliary beams (200), which are perpendicular to the main beam (100) and fixedly connected with the main beam (100); The main beam (100) is fixedly installed with a hanger (300) near the end; The auxiliary beam (200) is provided with a lifting hole (400) at each end.
2. The monorail hoist beam for mine cars according to claim 1, characterised by the fact that, The hanger (300) comprises a fixed block (310) fixedly connected with the top surface of the main beam (100); The middle part of the fixed block (310) is provided with a sleeve (320) fixedly connected with the fixed block (310), and the sleeve (320) is parallel to the auxiliary beam (200).
3. The monorail hoist beam for mine cars according to claim 2, characterised by the fact that, The sleeve (320) is connected with a lifting hook of a monorail crane through a shackle.
4. The monorail hoist beam for mine cars according to any of claims 1-3, characterized in that, The distance between the lifting holes (400) at the two ends of each auxiliary beam (200) is less than the width of a mine car.
5. The monorail hoist beam for mine cars according to any of claims 1-3, characterized in that, The lifting hole (400) is connected with a lifting chain through a shackle.
6. The monorail hoist beam for mine cars according to any of claims 1-3, characterized in that, The main beam (100) and the auxiliary beam (200) are both I-shaped steel.
7. The monorail hoist beam for mine cars according to claim 6, characterised by the fact that, The lifting hole (400) is provided with a reinforcing plate (500) on each side, which is fixedly connected with the auxiliary beam (200).
8. The monorail hoist beam for mine cars according to any of claims 1-3, characterized in that, The main beam (100) and the auxiliary beam (200) are welded.