Monorail track beam fixing device

Abstract

The application discloses a monorail hoist track beam fixing device in the technical field of monorail hoist transportation, which comprises a track beam main body, an anchor rod piece and a mounting frame fixedly installed at the end of the track beam main body, the mounting frame is provided with a mounting ring for the anchor rod piece to pass through, the upper segment of the anchor rod piece is an embedding nail for embedding into a roadway roof, the lower segment is a threaded rod with external threads, the threaded rod is threadedly provided with an upper fixed nut and a lower fixed nut, the upper fixed nut and the lower fixed nut can abut against the upper surface and the lower surface of the mounting ring respectively, the end faces of the upper fixed nut and the lower fixed nut towards the mounting ring are provided with expansion locking pieces, the expansion locking pieces can be expanded and deformed in the axial direction of the anchor rod piece, the expansion locking pieces can fill the assembly gap between the mounting ring and the corresponding fixed nut after expansion, and a damping locking structure is formed, so that the multiple shortcomings of the traditional anchor rod + hoist chain flexible hanging structure, such as large track shaking amount, difficulty in height fine adjustment, poor anti-unbalanced load performance in complex roadways and the like, are solved.

Description

Technical Field

[0001] This invention relates to the field of mining monorail transportation technology, specifically a monorail track beam fixing device. Background Technology

[0002] The monorail crane in underground coal mines is a core piece of equipment for transporting materials, equipment, and personnel in fully mechanized mining faces. The track beam needs to be anchored to the roadway roof via suspension components. Currently, the mainstream track suspension solution underground is a flexible suspension structure consisting of anchor bolts, chains, and U-shaped shackles. The height of the track beam is adjusted by adding or removing chain links. Although this simple structure is easy to assemble and disassemble, it has drawbacks in complex working conditions such as fractured roofs, steeply inclined roadways, curves, and slope changes. Flexible suspension chains lack rigid constraints, resulting in poor track stability. As flexible connectors, the impacts and alternating vibrations generated by the monorail crane can directly cause the track beam to oscillate significantly. Height adjustments can only be made by adding or removing links, not by continuous vertical fine-tuning. Repeated disassembly and reassembly of links and multiple adjustments are required to level the entire track, making manual operation cumbersome. Furthermore, bolts and suspension nuts are prone to gradual loosening, leading to widening gaps and misalignment at track joints, potentially causing serious derailment accidents.

[0003] Based on this, the present invention designs a monorail track beam fixing device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a monorail track beam fixing device that solves the multiple shortcomings of the traditional anchor bolt + chain suspension structure, such as large track sway, difficulty in fine-tuning height, and poor resistance to eccentric load in complex tunnels.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A monorail track beam fixing device includes a track beam body, anchor bolts, and a mounting frame fixedly installed at the end of the track beam body. The mounting frame is provided with a mounting ring for the anchor bolts to pass through. The upper section of the anchor bolt is an embedded nail for embedding into the tunnel roof, and the lower section is a threaded rod with external threads. The threaded rod is threaded with an upper fixing nut and a lower fixing nut, which can respectively abut against the upper and lower surfaces of the mounting ring. Both the upper and lower fixing nuts have expansion locking components on their end faces facing the mounting ring. The expansion locking components can expand and deform along the axial direction of the anchor rod, and after expansion, they fill the assembly gap between the mounting ring and the corresponding fixing nut to form a rigid damping locking structure.

[0006] Preferably, an inner limiting ring is coaxially fixed to the inner wall of the mounting ring, the axial thickness of the inner limiting ring is less than the axial thickness of the mounting ring, and the upper and lower end faces of the inner limiting ring and the inner wall of the mounting ring form an annular receiving cavity; the expansion locking member is an expansion airbag, which tightly fills the annular receiving cavity after being inflated.

[0007] Preferably, both the upper fixing nut and the lower fixing nut are provided with an extension cover on the side facing the mounting ring. The extension cover circumferentially covers the outer periphery of the inflatable airbag to constrain the lateral expansion range of the inflatable airbag.

[0008] Preferably, an inflation tube is fixedly connected to the inflatable airbag, the outer end of the inflation tube extends to the outside of the corresponding fixing nut, and the exposed end of the inflation tube is equipped with a one-way inflation valve. The one-way inflation valve only allows gas to be filled into the inflatable airbag in one direction. The one-way inflation valve is provided with an inflation interface adapted to a standard air gun. After the air gun is connected to the inflation interface, compressed gas can be filled into the inflatable airbag.

[0009] Preferably, the inflatable airbag is made of oil-resistant and flame-retardant rubber material, and an annular steel wire skeleton is embedded inside the inflatable airbag. The annular steel wire skeleton is used to limit the excessive radial inflation of the airbag and ensure that the airbag fits evenly against the inner wall of the annular receiving cavity after being compressed.

[0010] Preferably, the mounting bracket includes a main connecting rod fixedly connected to the main body of the track beam, and locking rods are provided on the outer sides of both the upper and lower fixing nuts; the locking rod includes a threaded half rod, a mounting tube, and a locking sleeve, the mounting tube is fixed to the side wall of the corresponding fixing nut, the threaded half rod is slidably assembled inside the mounting tube by a limiting spring, and the threaded half rod can be inserted transversely into the main connecting rod; two sets of threaded half rods arranged opposite each other can be joined to form a complete screw, and the locking sleeve can be threaded onto the outer wall of the joined complete screw to restrict the separation of the two threaded half rods.

[0011] Preferably, the mounting frame further includes a horizontal connecting plate, the main connecting rod is horizontally arranged through the main body of the track beam, the middle part of the horizontal connecting plate is horizontally connected to the upper end of the main connecting rod, and two sets of mounting rings are respectively arranged at both ends of the horizontal connecting plate; the main connecting rod is provided with mounting holes, and two sets of opposing threaded half rods can be simultaneously inserted into the mounting holes to complete the docking.

[0012] Preferably, the main connecting rod and the main body of the track beam are integrally forged and cast.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the main body of the track beam is installed by replacing the conventional lifting chain and anchor rod with an installation frame and anchor rod. The anchor rod, together with the rigid clamping structure of the upper and lower double fixing nuts, forms a rigid anchoring connection between the main body of the track beam and the roadway roof, completely eliminating the problem of track reciprocating sway caused by the flexible lifting chain, significantly improving the running stability of the monorail locomotive. At the same time, relying on the thread transmission characteristics of the threaded rod, the height of the main body of the track beam can be continuously and infinitely adjusted by rotating the upper and lower fixing nuts, without the need for repeated disassembly and assembly of the chain links, greatly simplifying the roadway track leveling process and reducing the amount of manual adjustment work and operation time.

[0014] 2. In this invention, expansion locking components are provided on the mating end faces of the upper and lower fixing nuts and the mounting ring. The axial expansion deformation fills the assembly gap between the nut and the mounting ring. On the one hand, it eliminates the looseness caused by the threaded fit gap. On the other hand, the static friction force and axial damping generated by the expansion contact resist the alternating vibration and impact load generated by the locomotive operation, and prevent the fixing nut from being loosened by vibration and rotation. This prevents the track joint gap from widening and slippage from the root, reduces the risk of derailment accidents, and improves the safety of underground transportation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the front view structure of the present invention; Figure 2 This is a schematic diagram of the mounting frame and anchor bolt installation structure of the present invention; Figure 3 For the present invention Figure 2 Structural sectional view; Figure 4 This is a schematic diagram of the disassembled structure of the mounting frame and anchor bolt in this invention; Figure 5 This is a sectional view of the disassembled structure of the mounting frame and anchor rod in this invention; Figure 6 This is a schematic diagram of the locking rod in this invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Main body of track beam; 2. Mounting frame; 201. Horizontal connecting plate; 202. Mounting ring; 203. Inner limiting ring; 204. Main connecting rod; 3. Anchor rod; 301. Embedded nail; 302. Threaded rod; 4. Upper fixing nut; 5. Lower fixing nut; 6. Locking rod; 601. Threaded half rod; 602. Mounting tube; 603. Locking sleeve; 7. Inflatable airbag; 8. Extension cover; 9. Inflation tube. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-6 The present invention provides a technical solution: A monorail track beam fixing device includes a track beam body 1, an anchor rod 3, and a mounting frame 2 fixedly installed at the end of the track beam body 1. The mounting frame 2 is provided with a mounting ring 202 for the anchor rod 3 to pass through. The upper section of the anchor rod 3 is an embedded nail 301 for embedding into the roof of the tunnel, and the lower section is a threaded rod 302 with external threads. The threaded rod 302 is threaded with an upper fixing nut 4 and a lower fixing nut 5. The upper fixing nut 4 and the lower fixing nut 5 can respectively abut against the upper surface and the lower surface of the mounting ring 202. Both the upper fixing nut 4 and the lower fixing nut 5 have expansion locking components on their end faces facing the mounting ring 202. The expansion locking components can expand and deform along the axial direction of the anchor rod 3. After expansion, they fill the assembly gap between the mounting ring 202 and the corresponding fixing nut, forming a rigid damping locking structure.

[0020] In this invention, the track beam body 1 is installed using the mounting frame 2 and anchor bolt 3 instead of conventional lifting chains and anchor bolts. The anchor bolt 3, with its rigid clamping structure consisting of upper and lower double fixing nuts, forms a rigid anchoring connection between the track beam body 1 and the tunnel roof, completely eliminating the track swaying problem caused by the flexible lifting chain and significantly improving the stability of the monorail locomotive. At the same time, relying on the transmission characteristics of the threaded rod 302, the height of the track beam body 1 can be continuously and infinitely adjusted by rotating the upper and lower fixing nuts 5, without the need for repeated disassembly and assembly of the chain links. This greatly simplifies the tunnel track leveling process and reduces the amount of manual adjustment work and operation time.

[0021] In this invention, expansion locking components are provided on the end faces of the upper and lower fixing nuts 5 and the mounting ring 202. The axial expansion deformation fills the assembly gap between the nut and the mounting ring 202. On the one hand, it eliminates the looseness caused by the threaded fit gap. On the other hand, the static friction force and axial damping generated by the expansion contact resist the alternating vibration and impact load generated by the locomotive operation, and prevent the fixing nut from being loosened by vibration and rotation. This fundamentally prevents the track joint gap from widening and slipping, reduces the risk of derailment accidents, and improves the safety of underground transportation.

[0022] The inner wall of the mounting ring 202 is coaxially fixed with an inner limiting ring 203. The axial thickness of the inner limiting ring 203 is less than the axial thickness of the mounting ring 202. The upper and lower end faces of the inner limiting ring 203 and the inner wall of the mounting ring 202 enclose an annular cavity. The expansion locking component is an expansion airbag 7. After the expansion airbag 7 is inflated, it tightly fills the annular cavity.

[0023] Both the upper fixing nut 4 and the lower fixing nut 5 have an extension cover 8 on the side facing the mounting ring 202. The extension cover 8 circumferentially covers the outer periphery of the inflatable airbag 7 to constrain the lateral expansion range of the inflatable airbag 7. In this invention, an annular steel wire skeleton is embedded inside the inflatable airbag 7. Together with the inner limiting ring 203 on the inner wall of the mounting ring 202 and the extension cover 8 on the nut side, they constrain the expansion direction of the inflatable airbag 7, avoid excessive radial expansion, and ensure that the airbag fits evenly against the inner wall of the annular receiving cavity after being compressed. This results in uniform circumferential force on the upper fixing nut 4, the lower fixing nut 5, and the mounting ring 202, and stable damping performance.

[0024] The expansion airbag 7 is fixedly connected to an inflation tube 9, the outer end of which extends to the outside of a corresponding fixing nut. A one-way inflation valve is fitted to the exposed end of the inflation tube 9, allowing gas to enter the expansion airbag 7 in only one direction. The one-way inflation valve has an inflation interface compatible with a standard air gun; after the air gun is connected to the inflation interface, compressed gas can be injected into the expansion airbag 7. This invention uses an inflation tube 9 with a one-way inflation valve for inflation, is compatible with standard downhole air guns, has a simple installation process, and the one-way valve automatically maintains pressure after inflation, eliminating the need for continuous gas supply and resulting in low maintenance costs.

[0025] The inflatable airbag 7 is made of oil-resistant and flame-retardant rubber. An annular steel wire skeleton is embedded inside the airbag 7 to limit excessive radial inflation, ensuring that the airbag conforms evenly to the inner wall of the annular cavity after being compressed. This invention uses an inflatable airbag 7 made of oil-resistant and flame-retardant rubber to adapt to the special environment of underground coal mines with high oil pollution and explosion-proof requirements.

[0026] The mounting frame 2 includes a main connecting rod 204 fixedly connected to the main body 1 of the track beam. Locking rods 6 are provided on the outer sides of both the upper fixing nut 4 and the lower fixing nut 5. Each locking rod 6 includes a threaded half-rod 601, an mounting tube 602, and a locking sleeve 603. The mounting tube 602 is fixed to the side wall of the corresponding fixing nut. The threaded half-rod 601 is slidably fitted inside the mounting tube 602 via a limiting spring. The threaded half-rod 601 can be inserted laterally into the main connecting rod 204. Two opposing sets of threaded half-rods 601 can be joined to form a complete screw. The locking sleeve 603 can be threaded onto the outer wall of the joined complete screw, preventing the two threaded half-rods 601 from separating. In this invention, by setting the locking rod 6 structure, the upper / lower fixing nuts and the main connecting rod 204 of the mounting frame 2 form a laterally interlocking lock, thereby further restricting the rotation of the upper / lower fixing nuts, further preventing loosening of the upper / lower fixing nuts during vibration, and further improving the stability of the track beam main body 1 installation.

[0027] The mounting frame 2 further includes a horizontal connecting plate 201. The main connecting rod 204 is horizontally inserted through the main body 1 of the track beam. The middle part of the horizontal connecting plate 201 is horizontally connected to the upper end of the main connecting rod 204. Two sets of mounting rings 202 are respectively set at both ends of the horizontal connecting plate 201. The main connecting rod 204 has mounting holes, and two sets of opposing threaded half rods 601 can be simultaneously inserted into the mounting holes to complete the connection. After the two sets of opposing threaded half rods 601 are inserted into the mounting holes of the main connecting rod 204, they are connected to form a complete screw rod, and then tightened by the locking sleeve 603. This restricts the lateral relative displacement and torsion of the upper / lower fixing nuts and the mounting frame 2, which can effectively resist the lateral eccentric load and torsional moment generated under complex working conditions such as curves, steep inclined tunnels, and slope change points, and avoid the mounting frame 2 from lateral offset and torsion along the anchor member 3, further improving the load-bearing stability and working condition adaptability of the overall fixing structure.

[0028] The main connecting rod 204 and the track beam body 1 are integrally forged and cast. This invention eliminates the stress concentration weaknesses caused by separate welding and bolted connections, allowing it to withstand greater hanging and impact loads, extending the service life of the device, and reducing the frequency of downhole maintenance.

Claims

1. A monorail suspension track beam fixing device, comprising a track beam body (1), anchor rods (3), and a mounting frame (2) fixedly installed at the end of the track beam body (1), characterized in that: The mounting frame (2) is provided with a mounting ring (202) for the anchor rod (3) to pass through. The upper section of the anchor rod (3) is an embedded nail (301) for embedding into the roadway roof, and the lower section is a threaded rod (302) with external threads. The threaded rod (302) is threaded with an upper fixing nut (4) and a lower fixing nut (5). The upper fixing nut (4) and the lower fixing nut (5) can respectively abut against the upper surface and the lower surface of the mounting ring (202). Both the upper fixing nut (4) and the lower fixing nut (5) are provided with expansion locking components on their end faces facing the mounting ring (202). The expansion locking components can expand and deform along the axial direction of the anchor rod (3). After expansion, they fill the assembly gap between the mounting ring (202) and the corresponding fixing nut to form a damping locking structure.

2. The monorail track beam fixing device according to claim 1, characterized in that: An inner limiting ring (203) is coaxially fixed to the inner wall of the mounting ring (202). The axial thickness of the inner limiting ring (203) is less than the axial thickness of the mounting ring (202). The upper and lower end faces of the inner limiting ring (203) and the inner wall of the mounting ring (202) enclose an annular cavity. The expansion locking component is an expansion airbag (7). After the expansion airbag (7) is inflated, it tightly fills the annular cavity.

3. The monorail track beam fixing device according to claim 2, characterized in that: Both the upper fixing nut (4) and the lower fixing nut (5) are provided with an extension cover (8) on the side facing the mounting ring (202). The extension cover (8) circumferentially covers the outer periphery of the inflatable airbag (7) and is used to constrain the lateral expansion range of the inflatable airbag (7).

4. A monorail track beam fixing device according to claim 2, characterized in that: An inflation tube (9) is fixedly connected to the inflatable airbag (7). The outer end of the inflation tube (9) extends to the outside of the corresponding fixing nut. The exposed end of the inflation tube (9) is equipped with a one-way inflation valve. The one-way inflation valve only allows gas to be filled into the inflatable airbag (7) in one direction. The one-way inflation valve is equipped with an inflation interface that is compatible with a standard air gun. After the air gun is connected to the inflation interface, compressed gas can be filled into the inflatable airbag (7).

5. A monorail track beam fixing device according to claim 2, characterized in that: The inflatable airbag (7) is made of oil-resistant and flame-retardant rubber material. An annular steel wire skeleton is embedded inside the inflatable airbag (7). The annular steel wire skeleton is used to limit the excessive radial expansion of the airbag and ensure that the airbag fits evenly against the inner wall of the annular cavity after being compressed.

6. A monorail track beam fixing device according to claim 1, characterized in that: The mounting bracket (2) includes a main connecting rod (204) fixedly connected to the main body of the track beam (1). Locking rods (6) are provided on the outer sides of the upper fixing nut (4) and the lower fixing nut (5). The locking rod (6) includes a threaded half rod (601), a mounting tube (602) and a locking sleeve (603). The mounting tube (602) is fixed to the side wall of the corresponding fixing nut. The threaded half rod (601) is slidably assembled inside the mounting tube (602) by a limiting spring. The threaded half rod (601) can be inserted into the main connecting rod (204) in a transverse direction. Two sets of threaded half rods (601) arranged opposite to each other can be connected to form a complete screw. The locking sleeve (603) can be threaded onto the outer wall of the connected complete screw to restrict the two threaded half rods (601) from separating from each other.

7. A monorail track beam fixing device according to claim 6, characterized in that: The mounting bracket (2) also includes a horizontal connecting plate (201). The main connecting rod (204) is horizontally connected through the main body of the track beam (1). The middle part of the horizontal connecting plate (201) is horizontally connected to the upper end of the main connecting rod (204). Two sets of mounting rings (202) are respectively set at both ends of the horizontal connecting plate (201). The main connecting rod (204) is provided with mounting holes. Two sets of opposing threaded half rods (601) can be inserted into the mounting holes simultaneously to complete the docking.

8. A monorail track beam fixing device according to claim 6, characterized in that: The main connecting rod (204) and the main body of the track beam (1) are integrally forged and cast.

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