Track of mining heading machine

Abstract

The utility model provides a mining heading machine crawler rack, which relates to the technical field of crawler racks, and comprises a rack body and a crawler body, the interiors of the two ends of the rack body are rotatably connected with transmission wheels, the two sides of the rack body are uniformly and rotatably connected with supporting wheels, the top of the rack body is provided with an empty groove in a penetrating manner, and the empty groove is provided with a plurality of through holes. And a tensioning mechanism is installed in the empty groove and comprises a U-shaped frame, and a tensioning roller is rotationally connected into the U-shaped frame. Automatic tensioning adjustment of the crawler belt body is achieved through the tensioning mechanism, when the crawler belt body is loosened, elastic restoring force of the tensioning spring pushes the connecting plate, the U-shaped frame and the tensioning roller to act, the tensioning degree of the crawler belt body is increased, when the crawler belt body is too tight, the tensioning spring is stressed to contract to absorb acting force, the too tight state is relieved, and the crawler belt body is prevented from being damaged. Due to the dynamic adjustment, the crawler belt body can keep proper tension degree all the time, vibration and noise during walking are greatly reduced, and the running stability of the heading machine is improved.

Description

Technical Field

[0001] This utility model relates to the field of tracked machine frame technology, and in particular to a tracked machine frame for a mining tunneling machine. Background Technology

[0002] In the field of mineral resource extraction, tunneling machines (TBMs), as key equipment for excavating and advancing tunnels, often operate in extremely harsh environments. They face challenges such as high dust and high humidity, and must operate continuously on uneven, even steeply sloping, tunnel floors. This places extremely high demands on the TBM's walking mechanism, and tracked systems, with their advantages of low ground pressure, high traction, and strong climbing ability, have become the mainstream choice for TBM walking systems.

[0003] As the core load-bearing and connecting component of a tracked walking structure, the performance of the track frame directly affects the walking stability, operating efficiency, and service life of the tunneling machine. Traditional mining tunneling machine track frames, during long-term use, are prone to track loosening due to the continuous operation of the tracks driven by the drive wheels and frequent friction and compression between the tracks and the support wheels. Once the tracks loosen, it not only causes severe vibration and noise during tunneling, affecting the stable operation of the equipment, but also accelerates wear between the tracks and the drive and support wheels, shortening the track's service life. It can even lead to safety accidents due to track detachment, severely restricting the normal operation of the tunneling machine. Therefore, improvements are necessary. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a tracked frame for a mining tunneling machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tracked frame for a mining tunneling machine, comprising a frame body and a track body, wherein transmission wheels are rotatably connected to both ends of the frame body, and support wheels are rotatably connected to both sides of the frame body, and a slot is provided through the top of the frame body, wherein a tensioning mechanism is installed inside the slot, the tensioning mechanism comprising a U-shaped frame, a tensioning roller being rotatably connected inside the U-shaped frame, connecting plates being fixedly installed on both sides of the U-shaped frame, and round rods being symmetrically slidably connected inside the connecting plates, with fixing plates fixedly installed at the top and bottom ends of the round rods, and a tensioning spring being sleeved on the outer wall of the round rods.

[0006] Preferably, the drive wheel and the track body are meshed with each other, and the support wheel is rotatably connected to the track body.

[0007] Preferably, there are four sets of fixing plates, which are located on both sides inside the slot and are fixedly connected to the frame body.

[0008] Preferably, the tension roller is rotatably connected to the track body.

[0009] Preferably, one end of the tension spring is fixedly connected to the fixed plate, and the other end of the tension spring is fixedly connected to the connecting plate.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] In this invention, an automatic tension adjustment of the track body is achieved through a tensioning mechanism. When the track body is loose, the elastic restoring force of the tension spring pushes the connecting plate, U-shaped frame, and tension roller to increase the tension of the track body. When the track body is too tight, the tension spring contracts to absorb the force and relieve the excessive tightness. This dynamic adjustment allows the track body to maintain a suitable tension at all times, significantly reducing vibration and noise during movement and improving the stability of the tunneling machine. At the same time, for traditional tracks where loosening exacerbates wear between the track body and the drive wheel and support wheel, shortening its service life, the drive wheel in this machine frame meshes with the track body, and the support wheel and tension roller are rotatably connected to the track body. Combined with the stable tensioning effect of the tensioning mechanism, this makes the contact between the track body and various components more uniform and the force more reasonable during operation, reducing unnecessary friction and compression, thereby reducing the wear rate of the track body and related components and effectively extending their service life. Attached Figure Description

[0012] Figure 1 This utility model provides an overall structural schematic diagram of the track frame of a mining tunneling machine;

[0013] Figure 2 This utility model provides an exploded structural diagram of the track frame of a mining tunneling machine;

[0014] Figure 3 This utility model provides a schematic diagram of a tensioning mechanism for the track frame of a mining tunneling machine.

[0015] Legend: 1. Frame body; 2. Track body; 3. Drive wheel; 4. Support wheel; 5. Groove; 6. Tensioning mechanism; 601. U-shaped frame; 602. Tensioning roller; 603. Connecting plate; 604. Round rod; 605. Fixing plate; 606. Tensioning spring. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example: Figures 1-3 As shown, this utility model provides a technical solution: a tracked frame for a mining tunneling machine, comprising a frame body 1 and a track body 2. Drive wheels 3 are rotatably connected to both ends of the frame body 1, and support wheels 4 are rotatably connected to both sides of the frame body 1. A slot 5 is formed through the top of the frame body 1, and a tensioning mechanism 6 is installed inside the slot 5. The tensioning mechanism 6 includes a U-shaped frame 601, a tensioning roller 602 rotatably connected inside the U-shaped frame 601, connecting plates 603 fixedly installed on both sides of the U-shaped frame 601, and round rods 604 symmetrically slidably connected inside the connecting plates 603. Fixed plates 605 are fixedly installed at the top and bottom of the rod 604. A tension spring 606 is sleeved on the outer wall of the rod 604. The drive wheel 3 meshes with the track body 2. The support wheel 4 is rotatably connected to the track body 2. There are four sets of fixed plates 605. The four sets of fixed plates 605 are located on both sides inside the slot 5. The four sets of fixed plates 605 are fixedly connected to the frame body 1. The tension roller 602 is rotatably connected to the track body 2. One end of the tension spring 606 is fixedly connected to the fixed plate 605. The other end of the tension spring 606 is fixedly connected to the connecting plate 603.

[0019] In this embodiment, the tensioning mechanism 6 enables automatic tension adjustment of the track body 2. When the track body 2 is loose, the elastic restoring force of the tension spring 606 pushes the connecting plate 603, U-shaped frame 601, and tension roller 602 to increase the tension of the track body 2. When the track body 2 is too tight, the tension spring 606 contracts under force to absorb the force and relieve the over-tightness. This dynamic adjustment allows the track body 2 to always maintain a suitable tension, significantly reducing vibration and noise during movement and improving the stability of the tunneling machine. At the same time, for traditional tracks that experience increased wear between the track body 2 and the drive wheel 3 and support wheel 4 due to loosening, thus shortening their service life, the drive wheel 3 in this machine frame meshes with the track body 2, and the support wheel 4 and tension roller 602 are rotatably connected to the track body 2. Combined with the stable tensioning effect of the tensioning mechanism 6, this makes the contact between the track body 2 and various components more uniform and the force more reasonable during operation, reducing unnecessary friction and compression, thereby reducing the wear rate of the track body 2 and related components and effectively extending their service life.

[0020] The working principle of this embodiment is as follows: During operation, the transmission wheel 3, as a power output component, meshes with the track body 2 and rotates under the drive of the drive device, thereby driving the track body 2 to move as a whole and realizing the walking action of the tunneling machine. The support wheels 4, evenly distributed on both sides of the frame body 1, are rotatably connected to the track body 2, providing support for the track body 2 and ensuring that the track body 2 maintains a stable shape and trajectory during operation. The tensioning mechanism 6 plays a key role in tension adjustment during the operation of the track body 2. The tensioning roller 602 is rotatably connected to the track body 2. When the track body 2 becomes loose, its pressure on the tensioning roller 602 decreases. At this time, the tensioning spring 606, sleeved on the outer wall of the round rod 604, will push the connecting plate 603 to slide upward along the round rod 604 due to its own elastic restoring force (when the track is too loose). Because the connecting plate 603 is fixedly connected to the U-shaped frame 601, the U-shaped frame 601 will move together with the connecting plate 603, thereby driving the tensioning. Roller 602 presses upwards against track body 2, increasing the tension of track body 2. When track body 2 becomes too tight due to excessive force, it exerts a large downward pressure on tension roller 602. This pressure is transmitted to connecting plate 603 through U-shaped frame 601, causing connecting plate 603 to slide downwards along round rod 604 and compress tension spring 606. Tension spring 606 contracts under pressure, absorbing part of the force, thereby relieving the over-tightness of track body 2 and preventing damage to track body 2 and related components due to excessive force. Through the elastic extension and contraction of tension spring 606 and the sliding of connecting plate 603 along round rod 604, tensioning mechanism 6 can automatically adapt to the tightness changes of track body 2, always maintaining track body 2 in a suitable tension state, ensuring the stability and reliability of tunneling machine movement. At the same time, fixed plate 605 is fixedly connected to frame body 1, providing stable support for round rod 604 and ensuring the overall stability of tensioning mechanism 6.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A tracked frame for a mining tunneling machine, comprising a frame body (1) and a track body (2), characterized in that: The two ends of the frame body (1) are rotatably connected to the transmission wheel (3), and the two sides of the frame body (1) are evenly rotatably connected to the support wheel (4). The top of the frame body (1) is provided with a slot (5), and a tensioning mechanism (6) is installed inside the slot (5). The tensioning mechanism (6) includes a U-shaped frame (601), a tensioning roller (602) is rotatably connected inside the U-shaped frame (601), connecting plates (603) are fixedly installed on both sides of the U-shaped frame (601), and round rods (604) are symmetrically slidably connected inside the connecting plates (603). Fixing plates (605) are fixedly installed at the top and bottom ends of the round rods (604), and tensioning springs (606) are sleeved on the outer wall of the round rods (604).

2. The tracked frame of the mining tunneling machine according to claim 1, characterized in that: The drive wheel (3) meshes with the track body (2), and the support wheel (4) is rotatably connected to the track body (2).

3. The tracked frame of the mining tunneling machine according to claim 1, characterized in that: The number of fixing plates (605) is four sets. The four sets of fixing plates (605) are located on both sides inside the slot (5). The four sets of fixing plates (605) are fixedly connected to the frame body (1).

4. The tracked frame of the mining tunneling machine according to claim 1, characterized in that: The tension roller (602) is rotatably connected to the track body (2).

5. The tracked frame of the mining tunneling machine according to claim 1, characterized in that: One end of the tension spring (606) is fixedly connected to the fixing plate (605), and the other end of the tension spring (606) is fixedly connected to the connecting plate (603).

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