A coal mine single-track hoist anti-derailing device

Abstract

The utility model relates to the technical field of coal mine underground mining, and concretely relates to a monorail hoist anti-derailing device for coal mine, which comprises a supporting steel plate, a wear-resistant mechanism installed on the supporting steel plate, a fixing frame installed on the side wall of the supporting steel plate, an anti-collision mechanism screw-mounted on the fixing frame, a guide mechanism installed on the bottom of the supporting steel plate, the guide mechanism comprising a guide wheel and a vertical rod, the vertical rod being clamped on the bottom of the supporting steel plate, a backing plate being fixed to the bottom end of the supporting steel plate, the vertical rod penetrating through the guide wheel and the backing plate, the vertical rod being fixed to the supporting steel plate through bolts, a support rod being fixed to the two sides of the supporting steel plate, a plug rod being clamped on the support rod, a scraper penetrating through the plug rod, the plug rod being fixed to the support rod through bolts, and the scraper being in contact with the side wall of the guide wheel; the guide wheel, the vertical rod and the backing plate are in rotary cooperation, thereby realizing stable guidance of the monorail hoist; the obliquely arranged support rod provides stable support for the plug rod and the scraper, so that the scraper is always in contact with the guide wheel and removes coal dust and sundries in real time.

Description

Technical Field

[0001] This utility model relates to an anti-derailment device, specifically an anti-derailment device for a monorail crane used in coal mines, belonging to the field of underground coal mining technology. Background Technology

[0002] In underground coal mining operations, monorails serve as crucial transportation equipment, responsible for transferring personnel, equipment, and materials. Their operational safety and stability directly impact underground production efficiency and the safety of workers. The underground coal mine environment is characterized by high humidity, high dust levels, confined spaces, and complex and variable geological conditions. Tunnel walls are prone to collapse and rockfalls, and the tracks, subjected to long-term heavy loads, vibrations, and coal dust erosion, are highly susceptible to wear, deformation, and corrosion. If a monorail deviates from or becomes stuck on a damaged track during high-speed operation, it can lead to derailment accidents. This not only results in equipment damage and material spillage, causing severe economic losses, but can also block tunnels, trigger secondary disasters, and pose a fatal threat to the lives of workers. Especially in deep mining scenarios, increased underground pressure and intensified tunnel deformation make the operating conditions of monorails even more demanding, placing higher requirements on the reliability, adaptability, and durability of anti-derailment devices.

[0003] For example, patent CN223702600U discloses a derailment prevention device for a monorail crane in a coal mine. Although it achieves basic derailment prevention, the guide wheel of the device lacks protection and cleaning design. Coal dust, gangue debris and other impurities in the coal mine can easily adhere to the wheel surface of the guide wheel. This not only increases the frictional resistance when the guide wheel rotates, leading to increased energy consumption and track deviation risk of the monorail crane, but also causes uneven wear of the guide wheel, affecting its guiding accuracy and rotational flexibility. After long-term use, it is easy to cause derailment accidents due to guide wheel jamming and uneven wear. Utility Model Content

[0004] The purpose of this utility model is to provide a derailment prevention device for a monorail crane in coal mines to solve the above-mentioned problems. The guide wheel, upright, and pad rotate in coordination to achieve stable guidance of the monorail crane, limit the running trajectory to reduce the risk of derailment, and the structure is adapted to reduce running resistance. The insert rod and the support rod are locked together, which facilitates the disassembly and maintenance of the scraper and ensures stable contact between the two. The inclined support rod provides stable support for the insert rod and the scraper, so that the scraper always keeps in contact with the guide wheel, removes coal dust and debris in real time, avoids impurities from affecting the rotation accuracy and guiding effect of the guide wheel, and ensures the stable operation of the monorail crane.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a derailment prevention device for a monorail crane in a coal mine, comprising a supporting steel plate and a wear-resistant mechanism installed on the supporting steel plate. A fixing frame is installed on the side wall of the supporting steel plate, and two anti-collision mechanisms are threadedly installed on the fixing frame. Guide mechanisms are installed on both sides of the bottom of the supporting steel plate, and the guide mechanism includes a guide wheel and a vertical rod. The vertical rod is engaged and installed on both sides of the bottom of the supporting steel plate. A pad is fixedly connected to the bottom end of the supporting steel plate. The vertical rod passes through the guide wheel and the pad. The guide wheel is rotatably connected to the vertical rod and the pad. The vertical rod is fixed to the supporting steel plate by bolts. Support rods are fixed on both sides of the supporting steel plate. Insert rods are engaged and installed on the support rods. Scrapers pass through the insert rods, and the insert rods are fixed to the support rods by bolts. The scrapers are in contact with the side wall of the guide wheel.

[0006] Preferably, the guide mechanism further includes a groove, and the support steel plate has a groove near the top of the upright, and a bolt is rotatably installed in the groove.

[0007] Preferably, the diameter of the end of the upright and the insert rod away from the supporting steel plate is larger than the diameter of the end of the upright and the insert rod near the supporting steel plate, the diameter of the guide wheel is larger than the diameter of the pad, and the pad is in close contact with the bottom of the supporting steel plate.

[0008] Preferably, both the support rod and the scraper are inclined, and the guide wheel is rotatably connected to the scraper.

[0009] Preferably, the wear-resistant mechanism includes wear-resistant strips and liners. Two sets of wear-resistant strips are fixedly installed on the inner wall of the supporting steel plate. The inner walls on both sides of the supporting steel plate are provided with slots, and liners are installed in the slots. The liners are fixed to the supporting steel plate by bolts.

[0010] Preferably, the liner plate and the supporting steel plate are interlocked, and the part of the supporting steel plate that contacts the liner plate is arranged with an inclined structure.

[0011] Preferably, the anti-collision mechanism includes anti-collision buffer blocks and protrusions. Two anti-collision buffer blocks are threadedly connected to the fixing frame, and several sets of protrusions are fixed to the end of the anti-collision buffer block away from the supporting steel plate.

[0012] Preferably, the anti-collision mechanism further includes through slots, and two through slots are symmetrically opened on the side of the fixing frame near the supporting steel plate. Bolts are rotatably installed in the through slots, and the bolts are located at the ends of the anti-collision buffer blocks.

[0013] Preferably, the anti-collision buffer block is made of rubber material, the protrusion and the anti-collision buffer block are integrally formed, and the protrusion is set in a hemispherical structure.

[0014] The beneficial effects of this utility model are as follows: the supporting steel plate, as the core load-bearing structure of the device, ensures the load-bearing strength and connection reliability of the overall structure; the guide wheel, through its rotational connection with the upright and the pad, achieves smooth guidance during monorail operation, effectively limiting the running trajectory and reducing the risk of derailment; its adaptive structural design also reduces running resistance; the upright adopts a snap-fit ​​installation and bolt fixing method, which not only ensures the stability of the connection with the supporting steel plate but also provides reliable rotational support for the guide wheel. Simultaneously, the larger diameter design at the end away from the supporting steel plate effectively prevents the guide wheel from falling off; the snap-fit ​​fixing structure of the insert rod and the support rod not only facilitates the installation, disassembly, and maintenance of the scraper but also ensures stable contact between the scraper and the side wall of the guide wheel; the inclined setting... The struts provide stable support for the pole and scraper, ensuring the scraper always adheres to the guide wheel and effectively removes impurities from the sidewalls of the guide wheel. The rotating contact between the scraper and the guide wheel removes coal dust and debris from the guide wheel surface in real time, preventing impurities from affecting the rotational accuracy and guiding effect of the guide wheel, further ensuring the stability of the monorail operation. The pad fits tightly against the bottom of the support steel plate, enhancing the structural strength of the pole installation area and reducing the impact force on the support steel plate when the guide wheel rotates, extending the service life of the support steel plate. At the same time, the design of the guide wheel diameter being larger than the pad ensures that the normal rotation of the guide wheel is not interfered with by the pad. The coordinated operation of multiple structures comprehensively improves the safety, stability, and durability of the monorail operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the supporting steel plate and the fixing frame of this utility model; Figure 3 This is a schematic diagram of the connection structure between the fixing frame and the anti-collision buffer block of this utility model; Figure 4 This is a schematic diagram of the connection structure between the supporting steel plate and the strut of this utility model; Figure 5 This is a schematic diagram of the connection structure between the insertion rod and the scraper of this utility model; Figure 6 This is a schematic diagram of the connection structure between the supporting steel plate and the liner plate of this utility model.

[0016] In the diagram: 1. Supporting steel plate; 2. Wear-resistant mechanism; 201. Wear-resistant strip; 202. Liner plate; 203. Slot; 3. Fixing frame; 4. Anti-collision mechanism; 401. Anti-collision buffer block; 402. Protrusion; 403. Through groove; 5. Guiding mechanism; 501. Guide wheel; 502. Upright pole; 503. Groove; 504. Insert rod; 505. Support rod; 506. Scraper; 507. Pad plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-6 As shown, a derailment prevention device for a monorail crane used in coal mines includes a supporting steel plate 1 and a wear-resistant mechanism 2 installed on the supporting steel plate 1. A fixing frame 3 is installed on the side wall of the supporting steel plate 1, and two anti-collision mechanisms 4 are threadedly installed on the fixing frame 3. Guide mechanisms 5 are installed on both sides of the bottom of the supporting steel plate 1. The guide mechanism 5 includes a guide wheel 501 and a vertical rod 502. The vertical rod 502 is engaged and installed on both sides of the bottom of the supporting steel plate 1. A pad 507 is fixedly connected to the bottom end of the supporting steel plate 1. The vertical rod 502 passes through the guide wheel 501 and the pad 507. The guide wheel 501 is connected to the vertical rod 502 and the pad 507. A rotating connection is formed by the upright 502 passing through the guide wheel 501 and the pad 507. This connection not only ensures smooth guidance and limits the running trajectory of the monorail to reduce the risk of derailment, but also reduces running resistance through a suitable structural design. Furthermore, the upright 502 is bolted to the support steel plate 1, and support rods 505 are fixed to both sides of the support steel plate 1. Insert rods 504 are engaged on the support rods 505, and scraper plates 506 pass through the insert rods 504. The inclined support rods 505 provide stable support for the insert rods 504 and scraper plates 506, ensuring that the scraper plates 506 are always in contact with the guide wheel 501. The guide wheel 501 contacts the side wall, and the scraper 506's rotational contact with the guide wheel 501 can remove coal dust and debris from the surface of the guide wheel 501 in real time, preventing impurities from affecting the rotational accuracy and guiding effect of the guide wheel 501; the insert rod 504 is fixed to the support rod 505 by bolts, the scraper 506 contacts the side wall of the guide wheel 501, and the support steel plate 1 has a groove 503 near the top of the upright 502. Bolts are rotatably installed in the groove 503 to engage the upright 502 on both sides of the bottom of the support steel plate 1 and fix it with bolts. The support steel plate 1 near the top of the upright 502... The groove 503 provides a concealed installation space for the bolts, preventing them from being exposed and damaged. The diameters of the ends of the uprights 502 and the inserts 504 away from the supporting steel plate 1 are larger than the diameters of the ends of the uprights 502 and the inserts 504 near the supporting steel plate 1. The diameter of the guide wheel 501 is larger than the diameter of the pad 507. The pad 507 fits tightly against the bottom of the supporting steel plate 1, which not only improves the structural strength of the installation part of the uprights 502, but also buffers the impact force on the supporting steel plate 1 when the guide wheel 501 rotates. The support rod 505 and the scraper 506 are both inclined, and the guide wheel 501 and the scraper 506 are rotatably connected.

[0019] As a technical optimization of this utility model, the wear-resistant mechanism 2 includes wear-resistant strips 201 and liners 202. Two sets of wear-resistant strips 201 are fixedly installed on the inner wall of the supporting steel plate 1. The inner walls on both sides of the supporting steel plate 1 are provided with slots 203, and liners 202 are installed in the slots 203. The inclined structure of the contact area between the supporting steel plate 1 and the liners 202 can improve the tightness of the engagement. Finally, the liners 202 are fixed to the supporting steel plate 1 with bolts. The wear-resistant strips 201 and the liners 202 work together to enhance the wear resistance of the inner wall of the supporting steel plate 1 and reduce wear during the operation of the device. The liners 202 are fixed to the supporting steel plate 1 with bolts. The liners 202 and the supporting steel plate 1 are engaged and connected, and the contact area between the supporting steel plate 1 and the liners 202 is set with an inclined structure.

[0020] As a technical optimization of this utility model, the anti-collision mechanism 4 includes an anti-collision buffer block 401 and a protrusion 402. Two anti-collision buffer blocks 401 are threadedly connected to the fixing frame 3. Several sets of protrusions 402 are fixed to the end of the anti-collision buffer block 401 away from the supporting steel plate 1. The anti-collision mechanism 4 also includes a through groove 403. Two through grooves 403 are symmetrically opened on the side of the fixing frame 3 near the supporting steel plate 1. Bolts are rotatably installed in the through grooves 403. The bolts are located at the ends of the anti-collision buffer blocks 401. The rubber anti-collision buffer block 401 cooperates with the hemispherical protrusion 402 at the end away from the supporting steel plate 1. The protrusion 402 and the anti-collision buffer block 401 are integrally formed. They can play a good buffering and shock absorption role when the device encounters a collision during operation, and reduce the damage to the device caused by the collision impact. The anti-collision buffer block 401 is made of rubber. The protrusion 402 and the anti-collision buffer block 401 are integrally formed. The protrusion 402 is set in a hemispherical structure.

[0021] In use, this utility model firstly uses the stable bearing base provided by the supporting steel plate 1 to snap the upright 502 onto both sides of the bottom of the supporting steel plate 1 and fix it with bolts. The groove 503 near the top of the upright 502 on the supporting steel plate 1 provides hidden installation space for the bolts, preventing them from being exposed and damaged, while also enhancing the compactness of the connection. The larger diameter design of the end of the upright 502 away from the supporting steel plate 1 effectively prevents the guide wheel 501 from falling off. The pad 507 fits tightly against the bottom of the supporting steel plate 1, which not only improves the structural strength of the installation part of the upright 502, but also buffers the impact force on the supporting steel plate 1 when the guide wheel 501 rotates, extending the service life of the supporting steel plate 1. The design, with a diameter larger than that of the pad 507, ensures that its rotation is not interfered with. Subsequently, the upright 502 passes through the guide wheel 501 and the pad 507, forming a rotatable connection. This connection not only ensures smooth guidance during monorail operation and limits the running trajectory to reduce the risk of derailment, but also reduces running resistance through a suitable structural design. Next, the insert rod 504 is snapped onto the support rods 505 on both sides of the supporting steel plate 1 and fixed with bolts. This structure facilitates the subsequent disassembly and maintenance of the scraper 506. The inclined support rods 505 provide stable support for the insert rod 504 and the scraper 506, ensuring that the scraper 506 is always in contact with the side wall of the guide wheel 501, while the rotational contact between the scraper 506 and the guide wheel 501 is... To facilitate real-time removal of coal dust and debris from the surface of the guide wheel 501, preventing impurities from affecting its rotational accuracy and guiding effect, the larger diameter design of the insertion rod 504 at the end opposite to the supporting steel plate 1 further enhances its installation stability. Two sets of wear-resistant strips 201 are fixedly installed on the inner wall of the supporting steel plate 1, and the liner 202 is then engaged and positioned using the slots 203 on both sides of the inner wall of the supporting steel plate 1. The inclined structure at the contact point between the supporting steel plate 1 and the liner 202 improves the tightness of the engagement. Finally, the liner 202 is fixed to the supporting steel plate 1 with bolts. The synergistic effect of the wear-resistant strips 201 and the liner 202 enhances the wear resistance of the inner wall of the supporting steel plate 1, reducing wear during device operation. During the process of wear and tear, the overall service life is extended. When assembling the anti-collision related structure, the two anti-collision buffer blocks 401 are first installed on the fixing frame 3 on the side wall of the supporting steel plate 1 by threaded connection. The through grooves 403 symmetrically opened on the side of the fixing frame 3 near the supporting steel plate 1 can be used to install bolts. The bolts are located at the end of the anti-collision buffer block 401, which can further strengthen the connection between the anti-collision buffer block 401 and the fixing frame 3. The rubber anti-collision buffer block 401 is matched with the hemispherical protrusion 402 on the side opposite to the supporting steel plate 1. The protrusion 402 and the anti-collision buffer block 401 are integrally formed structures, which can play a good buffering and shock absorption role when the device encounters a collision during operation, and reduce the damage to the device caused by the collision impact.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A derailment prevention device for a monorail crane used in coal mines, comprising a supporting steel plate (1) and a wear-resistant mechanism (2) installed on the supporting steel plate (1), wherein a fixing frame (3) is installed on the side wall of the supporting steel plate (1), and two anti-collision mechanisms (4) are threadedly installed on the fixing frame (3), and guide mechanisms (5) are installed on both sides of the bottom of the supporting steel plate (1), characterized in that: The guiding mechanism (5) includes a guide wheel (501) and a vertical rod (502). The vertical rod (502) is engaged on both sides of the bottom of the supporting steel plate (1). A pad (507) is fixedly connected to the bottom end of the supporting steel plate (1). The vertical rod (502) passes through the guide wheel (501) and the pad (507). The guide wheel (501) is rotatably connected to the vertical rod (502) and the pad (507). The vertical rod (502) is fixed to the supporting steel plate (1) by bolts. Support rods (505) are fixed on both sides of the supporting steel plate (1). Insert rods (504) are engaged on the support rods (505). Scrapers (506) pass through the insert rods (504). The insert rods (504) are fixed to the support rods (505) by bolts. The scraper (506) contacts the side wall of the guide wheel (501).

2. The anti-derailment device for a monorail crane in a coal mine according to claim 1, characterized in that: The guide mechanism (5) also includes a groove (503). The support steel plate (1) has a groove (503) at the top of the upright (502). A bolt is rotatably installed in the groove (503).

3. The anti-derailment device for a monorail crane in a coal mine according to claim 1, characterized in that: The diameter of the end of the upright (502) and the insert (504) away from the supporting steel plate (1) is greater than the diameter of the end of the upright (502) and the insert (504) close to the supporting steel plate (1). The diameter of the guide wheel (501) is greater than the diameter of the pad (507). The pad (507) is in close contact with the bottom of the supporting steel plate (1).

4. The anti-derailment device for a monorail crane in a coal mine according to claim 1, characterized in that: The support rod (505) and the scraper (506) are both inclined, and the guide wheel (501) is rotatably connected to the scraper (506).

5. A derailment prevention device for a monorail crane in a coal mine according to claim 1, characterized in that: The wear-resistant mechanism (2) includes wear-resistant strips (201) and liners (202). Two sets of wear-resistant strips (201) are fixedly installed on the inner wall of the supporting steel plate (1). The inner walls on both sides of the supporting steel plate (1) are provided with slots (203). The liners (202) are engaged in the slots (203). The liners (202) are fixed to the supporting steel plate (1) by bolts.

6. A derailment prevention device for a monorail crane in a coal mine according to claim 5, characterized in that: The liner (202) is engaged with the support steel plate (1), and the part of the support steel plate (1) that contacts the liner (202) is set with an inclined structure.

7. A derailment prevention device for a monorail crane in a coal mine according to claim 1, characterized in that: The anti-collision mechanism (4) includes an anti-collision buffer block (401) and a protrusion (402). Two anti-collision buffer blocks (401) are threadedly connected to the fixing frame (3). Several sets of protrusions (402) are fixed to one end of the anti-collision buffer block (401) away from the supporting steel plate (1).

8. A derailment prevention device for a monorail crane in a coal mine according to claim 7, characterized in that: The anti-collision mechanism (4) also includes a through groove (403). The fixing frame (3) has two through grooves (403) symmetrically opened on one side near the supporting steel plate (1). Bolts are rotatably installed on the through groove (403) and the bolts are located at the end of the anti-collision buffer block (401).

9. A derailment prevention device for a monorail crane in a coal mine according to claim 7, characterized in that: The anti-collision buffer block (401) is made of rubber material. The protrusion (402) and the anti-collision buffer block (401) are integrally formed, and the protrusion (402) is set in a hemispherical structure.

Images