A track connection structure of a downhole monorail
By using bolts and chains to connect the monorail in the underground crane rail connection structure, displacement compensation of the crane rail is achieved, which solves the problems of large gaps and complex installation in the existing technology, and improves the stability and efficiency of underground transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU SUMEI MINING EQUIMENT MFG CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-31
AI Technical Summary
The existing underground monorail connection structure suffers from serious problems such as large gaps, high vibration and noise, misalignment, and lateral sway. It is also cumbersome to install and lacks sufficient strength, failing to meet the needs of efficient transportation in modern mines.
The first and second lifting rails are connected to the movable frame by bolts, and the lifting frame is fixed to the downhole support frame by chains and connecting blocks to achieve displacement compensation between the lifting rails and ensure stability.
It effectively reduces rail clearance, improves crane stability, simplifies the installation process, enhances connection strength, adapts to complex underground paths, and meets the needs of efficient transportation.
Smart Images

Figure CN224577890U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of track connection technology, and more specifically to a track connection structure for an underground monorail. Background Technology
[0002] The underground monorail connection structure is a device used to connect the tracks of underground monorails in coal mines. Its function is to ensure the firmness and smoothness of the track connection, so as to ensure the safe and stable operation of the monorail locomotive. As an important transportation equipment, the safety and stability of the monorail operation are of paramount importance, and the track connection structure is one of the key factors affecting the operation of the monorail.
[0003] In coal mines, monorail connections are often made using snap-fit or T-shaped fasteners. However, these methods have several drawbacks. For example, large gaps at the joints after connection can cause significant vibration and noise during monorail operation. Furthermore, serious issues with misalignment and swaying result in poor straightness and difficulty in adjustment. This not only significantly impacts the lifespan of the drive and auxiliary wheels of the monorail but also hinders its speed and operation, failing to meet the demands of efficient transportation in modern mines.
[0004] Some existing track connection structures still have the problem of complicated installation. For example, the hook and buckle connection method has a complex structure, which requires more manpower and time to install, affecting construction efficiency. At the same time, some connection structures are lacking in strength. For example, some connection structures using the hinge method are prone to breakage at the connection when transporting large-volume equipment, causing equipment damage and affecting the service life of the track.
[0005] A search revealed that Chinese Patent Publication No. CN202321476150.0 discloses a connection structure for a monorail hoist in an underground mine; it includes flanges that are arranged opposite to each other and fixed to the top surfaces of two monorail hoist tracks respectively, and the two flanges are connected by a first bolt threaded together; the first link of the annular chain for hoisting the two monorail hoist tracks extends between the two flanges, and a first bolt passes through the first link;
[0006] The device in the aforementioned patent connects the two rails by bolting two flanges. Bolts and threaded sleeves are also installed at the bottom of the two rails. This allows for a rigid connection between the two rails during installation. However, when installing the rails underground, they often require bending or turning. Therefore, the connection process described in the patent cannot effectively compensate for the gap between the two rails. Thus, the device in the aforementioned patent has certain drawbacks. Utility Model Content
[0007] The purpose of this utility model is to provide a track connection structure for a monorail hoist in underground mines. In this device, the movable frame inside the first connecting frame on the first hoist rail is connected to the second connecting frame by bolts. At the same time, the bolts in the second connecting frame that are connected to the movable frame are effectively connected to the hoist. This effectively achieves the connection between the two hoist rails. When one of the hoist rails tilts upward, the hoist is fixedly installed to the underground support frame via a chain connecting the connecting block. When one of the hoist rails tilts downward, the connecting blocks at both ends of the hoist are fixedly installed to the corresponding hoist rails via chains. In this way, during transportation, the movable frame effectively connects the two rails while the chain pulls the connecting block, achieving the displacement compensation effect of the hoist rails when the transportation device passes between the two hoist rails, thus solving the problems mentioned in the background art.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A single-rail hoist connection structure for underground drilling includes multiple first rails; each of the top ends of a first rail is fixedly mounted with a first connecting frame; each of the top ends of a first rail is respectively attached to a second rail; and each of the top ends of a second rail is integrally provided with a second connecting frame.
[0010] The first connecting frame has a movable frame installed inside by bolts; the end of the movable frame away from the first connecting frame is movably connected to the second connecting frame by bolts.
[0011] As a further technical solution of this utility model, a hanging plate is also installed on the bolts that are mounted on the second connecting frame and the movable frame; the end of the hanging plate away from the second connecting frame is movably installed with the hanging frame through a pin.
[0012] As a further technical solution of this utility model, the hanger is arranged in a trapezoidal shape; symmetrical chains are movably installed at both ends of the hanger via pins; the other end of the chain is movably installed with a connecting block;
[0013] As a further technical solution of this utility model, the connecting block is provided with bolt holes, and the connecting block is fixedly installed with the support frame in the shaft or with the first and second hanging rails.
[0014] As a further technical solution of this utility model, both the first and second hanging rails are T-shaped; both the first and second hanging rails can be straight or curved rails.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] In use, when the suspension rail is tilted upward, the two ends of the first suspension rail and the second suspension rail are effectively aligned. The first connecting frame at the top of the first suspension rail is movably connected to one end of the movable frame by bolts, and the other end of the movable frame is movably installed into the second connecting frame at the top of the second suspension rail by bolts, thereby realizing the connection of the corresponding ends of the first suspension rail and the second suspension rail.
[0017] In this utility model, the bolts connecting the movable frame in the second connecting frame are simultaneously and movably installed to one end of the hanging plate, and the other end of the hanging plate is movably installed to the hanging frame through a pin, thereby realizing the effective installation of the hanging frame. The two ends of the hanging frame are fixedly installed to the support frame in the well through chains and connecting blocks, thereby realizing the hoisting and installation of the first and second hanging rails.
[0018] In this invention, when one of the suspension rails tilts downwards, the structures on the first and second connecting frames are effectively connected in the same way. Two connecting blocks connected at both ends of the suspension frame by chains are respectively installed on the top of the first and second suspension rails. In this way, when the first or second suspension rail tilts downwards, the chains and connecting blocks effectively pull the suspension rails at both ends, avoiding excessive gaps between the first and second suspension rails, thereby effectively ensuring the stability of the crane. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0020] Figure 2 This utility model Figure 1 Side view.
[0021] Figure 3 This utility model Figure 1 A schematic diagram of the rear structure.
[0022] Figure 4 This utility model Figure 1 A breakdown diagram.
[0023] Figure 5 This utility model Figure 1 Enlarged view of the local structure at point A in the middle.
[0024] In the diagram: 1-First hanging rail, 2-Second hanging rail, 3-Connecting block, 4-Chain, 5-Hanger, 6-Second connecting frame, 7-First connecting frame, 8-Movable frame, 9-Hanging plate. Detailed Implementation
[0025] 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.
[0026] Please see Figure 1-5 In this embodiment of the utility model, a single-rail hoist connection structure for underground drilling includes multiple first hoist rails 1; a first connecting frame 7 is fixedly installed on the top of both ends of the first hoist rail 1; the two ends of the first hoist rail 1 are respectively attached to a second hoist rail 2; and a second connecting frame 6 is integrally provided on the top of both ends of the second hoist rail 2.
[0027] The first connecting frame 7 has a movable frame 8 installed inside by bolts; the end of the movable frame 8 away from the first connecting frame 7 is movably connected to the second connecting frame 6 by bolts.
[0028] A hanging plate 9 is also installed on the bolts that are used to install the second connecting frame 6 and the movable frame 8; the end of the hanging plate 9 away from the second connecting frame 6 is movably installed with the hanger 5 via a pin.
[0029] By adopting the above technical solution, when the suspension rail is tilted upward, the two ends of the first suspension rail 1 and the second suspension rail 2 are effectively aligned. The first connecting frame 7 at the top of the first suspension rail 1 is movably connected to one end of the movable frame 8 by bolts, and the other end of the movable frame 8 is movably installed into the second connecting frame 6 at the top of the second suspension rail 2 by bolts, thereby realizing the connection of the corresponding ends of the first suspension rail 1 and the second suspension rail 2.
[0030] In this embodiment, the hanger 5 is trapezoidal in shape; symmetrical chains 4 are movably mounted on both ends of the hanger 5 via pins; the other end of the chain 4 is movably mounted to the connecting block 3.
[0031] In this embodiment, the connecting block 3 is provided with bolt holes, and the connecting block 3 is fixedly installed with the support frame in the shaft or with the first hanging rail 1 and the second hanging rail 2.
[0032] By adopting the above technical solution, the bolts connecting the second connecting frame 6 to the movable frame 8 are simultaneously and movably installed to one end of the hanging plate 9. The other end of the hanging plate 9 is movably installed to the hanging frame 5 through the pin shaft, thereby realizing the effective installation of the hanging frame 5. The two ends of the hanging frame 5 are fixedly installed to the support frame in the well through the chain 4 and the connecting block 3, thereby realizing the hoisting and installation of the first hanging rail 1 and the second hanging rail 2.
[0033] Furthermore, both the first hanging rail 1 and the second hanging rail 2 are T-shaped; both the first hanging rail 1 and the second hanging rail 2 can be straight rails or curved rails.
[0034] By adopting the above technical solution, when one of the suspension rails tilts downward, the structures on the first connecting frame 7 and the second connecting frame 6 are effectively connected in the same way. The two connecting blocks 3 connected at both ends of the suspension frame 5 by the chain 4 are respectively installed on the top of the first suspension rail 1 and the second suspension rail 2. In this way, when the first suspension rail 1 or the second suspension rail 2 tilts downward, the chain 4 and the connecting blocks 3 effectively pull the suspension rails at both ends, avoiding the situation that the gap between the first suspension rail 1 and the second suspension rail 2 is too large, thereby effectively ensuring the stability of the crane.
[0035] The working principle of this utility model is as follows: When the hanging rail is tilted upward, the two ends of the first hanging rail 1 and the second hanging rail 2 are effectively aligned. The first connecting frame 7 at the top of the first hanging rail 1 is movably connected to one end of the movable frame 8 by bolts. The other end of the movable frame 8 is movably installed into the second connecting frame 6 at the top of the second hanging rail 2 by bolts, thereby realizing the connection of the corresponding ends of the first hanging rail 1 and the second hanging rail 2.
[0036] At the same time, the bolts connecting the second connecting frame 6 to the movable frame 8 are simultaneously installed movably at one end of the hanging plate 9, and the other end of the hanging plate 9 is installed movably with the hanging frame 5 through the pin shaft, so as to realize the effective installation of the hanging frame 5. The two ends of the hanging frame 5 are fixedly installed with the support frame in the well through the chain 4 and the connecting block 3, so as to realize the hoisting and installation of the first hanging rail 1 and the second hanging rail 2.
[0037] When one of the suspension rails tilts downwards, the structures on the first connecting frame 7 and the second connecting frame 6 are effectively connected in the same way. The two connecting blocks 3, which are connected at both ends of the suspension frame 5 by the chain 4, are respectively installed on the top of the first suspension rail 1 and the second suspension rail 2. In this way, when the first suspension rail 1 or the second suspension rail 2 tilts downwards, the chain 4 and the connecting blocks 3 effectively pull the suspension rails at both ends, avoiding the situation that the gap between the first suspension rail 1 and the second suspension rail 2 is too large, thereby effectively ensuring the stability of the crane.
[0038] 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.
[0039] 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 track connection structure for a monorail track of an underground mine, characterized by: It includes multiple first hanging rails (1); each of the top ends of the first hanging rail (1) is fixedly installed with a first connecting frame (7); the top ends of the first hanging rail (1) are respectively attached to the second hanging rail (2); the top ends of the second hanging rail (2) are integrally provided with a second connecting frame (6). The first connecting frame (7) has a movable frame (8) installed inside by bolts; the end of the movable frame (8) away from the first connecting frame (7) is movably connected to the second connecting frame (6) by bolts.
2. The track connection structure of the underground monorail hoist according to claim 1, characterized in that: A hanging plate (9) is also installed on the bolts that are used to install the second connecting frame (6) and the movable frame (8); the end of the hanging plate (9) away from the second connecting frame (6) is movably installed with the hanger (5) through a pin.
3. The track connection structure of the underground monorail hoist according to claim 2, characterized in that: The hanger (5) is trapezoidal in shape; both ends of the hanger (5) are symmetrically mounted with chains (4) via pins; the other end of the chain (4) is movably mounted with the connecting block (3).
4. The track connection structure of the underground monorail hoist according to claim 3, characterized in that: The connecting block (3) is provided with bolt holes, and the connecting block (3) is fixedly installed with the support frame in the shaft or with the first hanging rail (1) and the second hanging rail (2).
5. The track connection structure of the underground monorail according to claim 4, characterized in that: The first hanging rail (1) and the second hanging rail (2) are both T-shaped; the first hanging rail (1) and the second hanging rail (2) can be straight rails or curved rails.