Coal mine monorail hoist wheel friction driving mechanism

Abstract

The utility model discloses a drive mechanism technical field's coal mine monorail hoist wheel friction drive mechanism, include: I -shaped steel track. In the utility model, through the surface of several adjusting frames all fixed mounting a T -shaped pole, the both ends of double -end hydraulic pole and the other end of several insert tubes all are set up one force slot, and the surface of several T -shaped poles is slid in the inner wall of several force slots respectively, when using, the user through remote control remote control controller control two double -end hydraulic pole telescopic, can drive the surface of several pressure sensors respectively and touch in the inner wall of several force slots, and the user can realize to several rubber wheel to the two -sided inner wall of I -shaped steel track extrusion degree of magnitude's monitoring through several pressure sensors, thereby through the control of the friction force size of two -sided inner wall of several rubber wheel to I -shaped steel track guarantee the stability in the movement of several rubber wheels.

Description

Technical Field

[0001] This utility model relates to the field of drive mechanism technology, specifically a friction drive mechanism for a coal mine monorail crane wheel. Background Technology

[0002] The friction drive mechanism of a coal mine monorail hoist is a core component that relies on friction to transmit power. When the motor starts, it outputs power to the friction drive wheel. The wheel surface contacts the rail to generate static friction, which pushes the entire monorail crane to move along the I-beam rail. During this process, the pressure between the drive wheel and the rail can be adjusted by devices such as clamping cylinders to ensure that sufficient friction torque is maintained under different working conditions.

[0003] In multi-machine series operation scenarios of coal mine monorail wheel friction drive mechanisms, there are systemic risks caused by structural design flaws. Because the drive units are connected at a fixed interval, when the center of gravity of the cargo shifts from the geometric center of the two drive units, an asymmetrical load distribution is triggered. The drive wheel on the side with the shifted center of gravity bears a normal pressure far exceeding the design threshold, causing the friction torque to exceed the critical value and resulting in slippage. Simultaneously, the drive wheel on the opposite side enters a free-spinning state due to a sharp reduction in load, losing effective driving force output. Under this condition, the system exhibits a vicious cycle of "unilateral overload - opposite-side failure," which not only exacerbates drive wheel wear and motor overload risks but also leads to a collapse in overall machine stability due to the imbalance in driving force distribution. This becomes a key bottleneck restricting the safety and efficiency of heavy-duty transportation. The root cause of this problem lies in the mechanical contradiction between the fixed-interval design and dynamic load requirements, exposing the fundamental defects in the adaptive capabilities of traditional multi-machine series architectures. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the friction drive mechanism of the monorail hoist in coal mine is prone to a vicious cycle of "unilateral overload-opposite failure", which will aggravate the wear of the drive wheel and the risk of motor overload. This utility model provides a drive mechanism.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: A friction drive mechanism for a coal mine monorail hoist includes: an I-beam rail with several rubber wheels slidably inserted into both sides of the I-beam rail; two drive frames and a distance adjustment unit; the two drive frames are used to mount the several rubber wheels and drive the several rubber wheels to rotate; and the distance adjustment unit is used to connect the two drive frames and control the distance between the two drive frames.

[0006] Furthermore, the two drive frames include two mounting frames, and two adjustment frames are provided above each of the two mounting frames. A plurality of rubber wheels are rotatably mounted on the surfaces of the plurality of adjustment frames, and two auxiliary wheels are rotatably mounted on the surfaces of the plurality of adjustment frames. The drive frame also includes a drive unit and an adjustment unit. The drive unit is used to drive the plurality of rubber wheels to rotate respectively, and the adjustment unit is used to adjust the distance between the plurality of adjustment frames in pairs.

[0007] Furthermore, the drive unit includes a plurality of drive motors that are respectively fixedly mounted on the surfaces of a plurality of adjustment frames, the output ends of the plurality of drive motors are respectively fixedly mounted on one end of a plurality of rubber wheels, and the plurality of drive motors are respectively electrically connected to two controllers that are respectively fixedly mounted on the surfaces of two mounting frames.

[0008] Furthermore, the adjustment unit includes two double-headed hydraulic rods respectively fixedly installed on the surfaces of the two mounting brackets, hollow tubes are fixedly installed on the surfaces of the two mounting brackets, and insert tubes are slidably inserted into both ends of the two hollow tubes. It also includes a connecting unit, which is used to install both ends of the double-headed hydraulic rods and the other ends of the insert tubes onto the surfaces of the several adjustment brackets respectively.

[0009] Furthermore, the connection unit includes several T-shaped rods that are fixedly installed on the surfaces of several adjustment frames. Both ends of the double-headed hydraulic rod and the other ends of several insertion tubes are provided with force-applying grooves. The surfaces of several T-shaped rods are slidably inserted into the inner walls of several force-applying grooves. Pressure sensors are fixedly installed on the surfaces of several T-shaped rods. Several pressure sensors are electrically connected to two controllers respectively.

[0010] Furthermore, the adjusting unit includes several adjusting protrusions and telescopic rods respectively disposed at both ends of the two mounting brackets. Two insert rods are slidably inserted into the surface of each telescopic rod. One end of each insert rod is slidably inserted into the surface of two of the adjusting protrusions, and each surface is threaded with an abutting nut.

[0011] Furthermore, the two telescopic rods include two main rods, one end of each main rod is slidably inserted with a secondary rod, the surfaces of the two inserted rods are respectively slidably inserted into the surfaces of the main rods and the secondary rods, the surface of the secondary rods is provided with a plurality of limiting holes, the surface of the main rods is slidably inserted with a limiting rod, the surface of the limiting rod is slidably inserted into the inner wall of one of the limiting holes and a limiting nut is threaded onto its surface.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the friction drive mechanism for a single-rail crane in a coal mine adopts a dual-drive collaborative operation architecture. Its core feature lies in two independent drive frames symmetrically arranged below the I-beam rail, and a matching multi-set rubber wheel adaptive guidance system. Specifically, several rubber wheels are arranged in a longitudinal array above each drive frame. The surface of each rubber wheel forms a surface contact with the flanges on both sides of the I-beam rail through a precisely designed sliding insertion structure, ensuring both operational stability and low-resistance sliding. During use, the power module built into the drive frame can precisely drive the corresponding rubber wheel sets to rotate synchronously. Relying on the frictional torque between the rubber wheels and the rail, the two drive frames are driven to move synchronously along the axial direction of the I-beam rail. The key is... An adjustable distance unit is installed between the two drive frames. This unit is adjustable, allowing the operator to flexibly adjust the distance between the two drive frames before use, based on the center of gravity distribution of the towed load. This proactively optimizes load distribution, ensuring that the weight of the towed load is evenly distributed between the two drive frames. This effectively avoids the "one-sided overload - opposite-side failure" phenomenon caused by center of gravity shift (adjusting the distance between the two drive units aligns their centers with the center of gravity of the load. Even if the position of the load changes, the distance can be adjusted to realign them, ensuring even force distribution on both sides, thus preventing one side from being overloaded while the other is unloaded). This significantly improves the system stability and safety during heavy-duty transportation. This design, through the proactive adaptability of the mechanical structure, solves the dynamic imbalance problem that easily occurs in traditional fixed-distance drive mechanisms under complex load conditions.

[0013] 2. In this utility model, a T-shaped rod is fixedly installed on the surface of several adjustment frames. At the same time, a force-applying groove is opened at both ends of the double-headed hydraulic rod and the other end of several insertion tubes. The surfaces of several T-shaped rods are slidably inserted into the inner walls of several force-applying grooves. In use, the user remotely controls the extension and retraction of the two double-headed hydraulic rods through a remote control controller. This causes the surfaces of several pressure sensors to contact the inner walls of several force-applying grooves. The user can monitor the pressure of several rubber wheels on the inner walls of both sides of the I-beam rail through several pressure sensors. Thus, by controlling the friction of several rubber wheels on the inner walls of both sides of the I-beam rail, the stability of several rubber wheels during movement is ensured. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional view of a portion of the structure of this utility model; Figure 3 This is a partial cross-sectional view of a part of the structure of this utility model from another angle; Figure 4 This is a partial schematic diagram of a half-sectional view of the present invention.

[0015] In the diagram: 1. I-beam rail; 2. Rubber wheel; 3. Drive frame; 31. Mounting frame; 32. Adjustment frame; 33. Secondary wheel; 34. Drive unit; 341. Drive motor; 342. Controller; 35. Adjustment unit; 351. Double-headed hydraulic rod; 352. Empty pipe; 353. Inserted pipe; 354. Connecting unit; 3541. T-shaped rod; 3542. Force groove; 3543. Pressure sensor; 4. Adjustment unit; 41. Adjustment protrusion; 42. Telescopic rod; 421. Main rod; 422. Secondary rod; 423. Limiting hole; 424. Limiting rod; 425. Limiting nut; 43. Inserted rod; 44. Contact nut. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0017] This embodiment provides a friction drive mechanism for a coal mine monorail hoist, mainly used to solve the problem that the friction drive mechanism for a coal mine monorail hoist easily exhibits a vicious cycle of "unilateral overload - opposite side failure," which exacerbates the wear of the drive wheel and the risk of motor overload. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-4 Please provide a detailed explanation: A friction drive mechanism for a coal mine monorail hoist includes: an I-beam rail 1 with several rubber wheels 2 slidably inserted on both sides; the rubber wheels 2 are rotatably mounted on the surfaces of two drive frames 3. In use, the user can drive the rubber wheels 2 to rotate via the two drive frames 3, thus moving the two drive frames 3 along the length of the I-beam rail 1. Prior to this, the user can connect the two drive frames 3 together via an adjustment unit 4 and control the distance between them to accommodate the weight distribution of objects below. The main components of the two drive frames 3 are: two mounting frames 31, each with two adjustment frames 32 on top (the rubber wheels 2 are rotatably mounted on the surfaces of the adjustment frames 32); and two auxiliary wheels 33 rotatably mounted on the surfaces of the adjustment frames 32. In use, the user drives the rubber wheels 2 to rotate via a drive unit 34, thereby moving the adjustment frames 32 along the length of the I-beam rail 1. The mechanism allows for the removal of the rubber wheels 2 from the I-beam rail 1. When mounting the bracket 31, the distance between several adjustment brackets 32 is adjusted in pairs by the adjustment unit 4, which drives several rubber wheels 2 away from both sides of the I-beam rail 1, thereby removing the mounting bracket 31. The main components of the adjustment unit 4 are: several adjustment protrusions 41 and telescopic rods 42 respectively set at both ends of the two mounting brackets 31. In use, the user places the two ends of the rod on the surface of the two adjustment protrusions, and then slides two insert rods 43 into the surface of the telescopic rod 42, so that the surface of the two insert rods 43 slides into the surface of the two adjustment protrusions 41 respectively. Finally, the contact nuts 44 are threaded onto the surface of the two insert rods 43, thereby connecting the two ends of the telescopic rod 42 to one end of the two mounting brackets 31. It should be noted that the controller 342 has a Bluetooth module, and the user can remotely control the controller 342 through the remote control. This is a relatively mature existing technology and will not be elaborated on here. At the same time, two mounting holes are provided at the bottom of the two mounting brackets 31, which can be used to install suspended objects.

[0018] This coal mine monorail roller friction drive mechanism adopts a dual-drive cooperative operation architecture. Its core feature lies in two independent drive frames 3 symmetrically arranged below the I-beam rail 1, and a matching multi-set rubber wheel 2 adaptive guidance system. Specifically, several rubber wheels 2 are arranged in a longitudinal array above each drive frame 3. The surface of each rubber wheel 2 forms a surface contact with the flanges on both sides of the I-beam rail 1 through a precisely designed sliding insertion structure, ensuring both operational stability and low-resistance sliding. In use, the power module built into the drive frame 3 can precisely drive the corresponding set of rubber wheels 2 to rotate synchronously. Relying on the frictional torque between the rubber wheels 2 and the rail, the two drive frames 3 are driven to move synchronously along the axial direction of the I-beam rail 1. Crucially... An adjustable distance unit 4 is installed between the two drive frames 3. This unit is adjustable, allowing the operator to flexibly adjust the distance between the two drive frames 3 before use, based on the center of gravity distribution of the towed object. This proactively optimizes load distribution, ensuring that the weight of the towed object is evenly distributed between the two drive frames 3, effectively avoiding the "one-sided overload - opposite-side failure" phenomenon caused by center of gravity shift (adjusting the distance between the two drive units 34 aligns their centers with the center of gravity of the cargo. Even if the cargo's position changes, the distance can be adjusted to realign it, ensuring even force distribution on both sides, preventing one side from being overloaded while the other is unloaded). This significantly improves the system stability and safety during heavy-duty transportation. This design, through the proactive adaptability of the mechanical structure, solves the dynamic imbalance problem that easily occurs in traditional fixed-distance drive mechanisms under complex load conditions.

[0019] By fixing a T-shaped rod 3541 to the surface of each of several adjustment frames 32, and by opening a force-applying groove 3542 at both ends of the double-headed hydraulic rod 351 and the other end of several insertion tubes 353, the surfaces of the several T-shaped rods 3541 are slidably inserted into the inner walls of the several force-applying grooves 3542. In use, the user can remotely control the extension and retraction of the two double-headed hydraulic rods 351 through the remote control controller 342, which will cause the surfaces of several pressure sensors 3543 to contact the inner walls of the several force-applying grooves 3542 respectively. The user can monitor the pressure of the several rubber wheels 2 against the inner walls of the I-beam rail 1 through the several pressure sensors 3543, thereby ensuring the stability of the several rubber wheels 2 during movement by controlling the friction of the several rubber wheels 2 against the inner walls of the I-beam rail 1.

[0020] like Figures 1-3As shown, in some embodiments, the main components of the drive unit 34 are: a plurality of drive motors 341 respectively fixedly mounted on the surfaces of a plurality of adjustment brackets 32. In use, the user remotely controls two controllers 342 respectively fixedly mounted on the surfaces of two mounting brackets 31 to control the output ends of the plurality of drive motors 341 to rotate, thereby driving the rubber wheels 2 respectively fixedly mounted on the output ends of the plurality of drive motors 341 to rotate. The main components of the adjustment unit 35 are: two hollow tubes 352 respectively fixedly mounted on the surfaces of two mounting brackets 31, and insert tubes 3 are slidably inserted into both ends of the two hollow tubes 352. 53. In use, the user controls the extension and retraction of the two ends of the two double-headed hydraulic rods 351, which are respectively fixed on the surfaces of the two mounting brackets 31, via the remote control and two controllers 342. This drives the movement of several adjustment brackets 32, which are respectively installed at the two ends of the two double-headed hydraulic rods 351. This further drives several insertion tubes 353, whose other ends are respectively installed on the surfaces of several adjustment brackets 32, to slide on the inner walls of several empty tubes 352, thus ensuring the stability of the several adjustment brackets 32 during movement (under the action of the connecting unit 354, the two ends of the double-headed hydraulic rods 351 and the other ends of several insertion tubes 353 are respectively installed on the surfaces of several adjustment brackets 32).

[0021] like Figure 3 As shown, in some embodiments, the main components of the connecting unit 354 are: several force-applying grooves 3542 respectively opened at both ends of the double-headed hydraulic rod 351 and one end of several insertion tubes 353; T-shaped rods 3541 are fixedly installed on the surfaces of several adjustment frames 32; and the surfaces of several T-shaped rods 3541 are slidably inserted into the inner walls of several force-applying grooves 3542. In use, the user controls the controller 342 via remote control to extend and retract the two double-headed hydraulic rods 351, which causes the surfaces of several T-shaped rods 3541 to abut against the inner walls of several force-applying grooves 3542, so that several pressure sensors 3543 respectively fixedly installed on the surfaces of several T-shaped rods 3541 abut against the inner walls of several force-applying grooves 3542, thereby realizing the monitoring and control of the force of several rubber wheels 2 abutting against the I-beam rail 1 (because at this time, several rubber wheels 2 are also driven by the two double-headed hydraulic rods 351 to abut against the inner wall of the I-beam rail 1).

[0022] like Figure 4As shown, in some embodiments, the main components of the two telescopic rods 42 are: two main rods 421, with a secondary rod 422 slidably inserted into one end of the main rod 421 (the surfaces of the two insert rods 43 are slidably inserted into the surfaces of the main rod 421 and the secondary rod 422, respectively). Because several limiting holes 423 are provided on the surface of the secondary rod 422, and a limiting rod 424 is slidably inserted into the surface of the main rod 421, the user can pull the secondary rod 422 to adjust its position on the inner wall of the main rod 421, and then insert the limiting rod 424 into the inner wall of the limiting holes 423 at different positions. A limiting nut 425 is threaded onto the surface of the limiting rod 424, so that one end of the limiting nut 425 abuts against the surface of the main rod 421, thereby limiting the secondary rod 422 on the inner wall of the main rod 421.

[0023] The working process of this utility model is as follows: First, the user needs to adjust the distance between the two mounting brackets 31, place the telescopic rod 42 on the two adjustment protrusions, and then adjust the length of the telescopic rod 42 before sliding the surfaces of the two insert rods 43 into the surface of the telescopic rod 42, so that the surfaces of the two insert rods 43 slide into the surfaces of the two adjustment protrusions 41 respectively. Then, the contact nuts 44 are threaded onto the surfaces of the two insert rods 43 to achieve the connection of the two mounting brackets 31 and control of the connection distance. Secondly, the user can control the output ends of several drive motors 341 to rotate via the remote controller 342, which will drive several rubber wheels 2 to rotate, thereby enabling the two mounting brackets 31 to move along the length of the I-beam track 1. Before moving, the controller 342 can also control the two ends of the two double-headed hydraulic rods 351 to drive several rubber wheels 2 to press against the inner walls of both sides of the I-beam track 1 to ensure appropriate friction during the movement.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A friction drive mechanism for a coal mine monorail crane wheel, characterized in that, include: The I-beam rail (1) has several rubber wheels (2) slidably inserted on both sides. It also includes two drive frames (3) and a distance adjustment unit (4). The two drive frames (3) are used to install several rubber wheels (2) and drive several rubber wheels (2) to rotate. The distance adjustment unit (4) is used to connect the two drive frames (3) and control the distance between the two drive frames (3).

2. The friction drive mechanism for a coal mine monorail crane according to claim 1, characterized in that: The two drive frames (3) include two mounting frames (31), and two adjustment frames (32) are provided above each of the two mounting frames (31). Several rubber wheels (2) are rotatably mounted on the surfaces of several adjustment frames (32). Two auxiliary wheels (33) are rotatably mounted on the surfaces of several adjustment frames (32). The drive unit (34) is used to drive several rubber wheels (2) to rotate respectively, and the adjustment unit (35) is used to adjust the distance between several adjustment frames (32) in pairs.

3. The friction drive mechanism for a coal mine monorail crane according to claim 2, characterized in that: The drive unit (34) includes a plurality of drive motors (341) that are fixedly mounted on the surfaces of a plurality of adjustment frames (32). The output ends of the plurality of drive motors (341) are fixedly mounted on one end of a plurality of rubber wheels (2). The plurality of drive motors (341) are electrically connected to two controllers (342) that are fixedly mounted on the surfaces of two mounting frames (31).

4. The friction drive mechanism for a coal mine monorail crane according to claim 2, characterized in that: The adjustment unit (35) includes two double-headed hydraulic rods (351) that are respectively fixedly installed on the surfaces of the two mounting brackets (31). Empty tubes (352) are fixedly installed on the surfaces of the two mounting brackets (31). Inserted tubes (353) are slidably inserted into both ends of the two empty tubes (352). The unit also includes a connecting unit (354) for mounting the two ends of the double-headed hydraulic rods (351) and the other ends of the inserted tubes (353) onto the surfaces of the several adjustment brackets (32).

5. The friction drive mechanism for a coal mine monorail crane wheel according to claim 4, characterized in that: The connecting unit (354) includes several T-shaped rods (3541) that are fixedly installed on the surfaces of several adjustment frames (32). Both ends of the double-headed hydraulic rod (351) and the other ends of several insertion tubes (353) are provided with force-applying grooves (3542). The surfaces of several T-shaped rods (3541) are slidably inserted into the inner walls of several force-applying grooves (3542). Pressure sensors (3543) are fixedly installed on the surfaces of several T-shaped rods (3541). Several pressure sensors (3543) are electrically connected to two controllers (342).

6. The friction drive mechanism for a coal mine monorail crane according to claim 1, characterized in that: The adjusting unit (4) includes several adjusting protrusions (41) and telescopic rods (42) respectively disposed at both ends of the two mounting brackets (31). Two insert rods (43) are slidably inserted into the surface of the telescopic rods (42). One end of each insert rod (43) is slidably inserted into the surface of two of the adjusting protrusions (41), and each surface is threaded with an abutment nut (44).

7. The friction drive mechanism for a coal mine monorail crane wheel according to claim 6, characterized in that: The two telescopic rods (42) include two main rods (421), and each of the two main rods (421) is slidably inserted with a secondary rod (422) at one end. The surfaces of the two insertion rods (43) are slidably inserted into the surfaces of the main rods (421) and the secondary rods (422), respectively. The surface of the secondary rod (422) is provided with a plurality of limiting holes (423). The surface of the main rod (421) is slidably inserted with a limiting rod (424). The surface of the limiting rod (424) is slidably inserted into the inner wall of one of the limiting holes (423) and a limiting nut (425) is threaded onto its surface.

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