A kind of open frame device and tunneling roadway are used to cut fork telescopic belt frame

Abstract

The utility model discloses a kind of open type moving frame device, belong to mine under material transport equipment technical field, including two moving frame mechanisms arranged front and back, the middle part between two moving frame mechanisms is connected with telescopic oil cylinder, two sides are oppositely connected with pull telescopic sleeve, the outer tube bottom of pull telescopic sleeve is equipped with track wheel, the distance between two moving frame mechanisms is controlled by telescopic action of telescopic oil cylinder;Moving frame mechanism left and right sides oppositely each is equipped with open type rail clamp, open type rail clamp includes guide wheel;Moving frame mechanism is equipped with belt pulley frame mechanism.It also discloses a kind of scissor type telescopic belt frame for driving roadway, including detachably connected scissor type telescopic conveying device between front moving frame mechanism.This technical scheme realizes the automatic telescopic function of scissor type telescopic belt frame for driving roadway by designing open type moving frame device, can effectively and driving machine dynamic matching, improve driving efficiency, save the operation time and manpower of driving roadway.

Description

Technical Field

[0001] This utility model relates to the technical field of underground material transportation equipment, and in particular to the telescopic belt frame used in underground coal mine belt conveyors. Background Technology

[0002] In underground coal mine tunneling operations, belt conveyors are one of the core pieces of equipment for material transportation at the tunneling face due to their advantages such as long-distance conveying, large capacity, and high reliability. However, the frame length adjustment of traditional material conveyor belts relies on manual operation. Especially during tunnel excavation, the transport distance needs to be extended or contracted by installing or dismantling the frame section by section. This process not only requires frequent machine shutdowns, leading to reduced tunneling efficiency, but also involves high manual labor intensity and is time-consuming and labor-intensive.

[0003] Traditional belt conveyors lack the adaptive capability to dynamically follow the movement of tunneling machines, failing to match their forward or backward movements in real time. This leads to a disconnect between the transport system and the tunneling progress, affecting continuous production. For example, a coal mine belt conveyor disclosed in Chinese patent CN114772161A employs this structure. Based on this deficiency, engineers have attempted to use telescopic frame structures to extend or retract the transport distance. For instance, Chinese patent CN220375537U discloses a mobile telescopic support for a continuous belt conveyor. This technical solution, through the cooperation of a scissor-type telescopic mechanism and individual support units, can extend the support according to the construction progress, reducing the frequency of installing fixed supports. However, in actual production, it has been found that this technical solution not only fails to effectively match the dynamic movement of the tunneling machine but also often lacks a timely response protection mechanism when facing complex underground working conditions. This poses a risk of uncontrolled belt frame slippage or structural damage, threatening operational safety. Utility Model Content

[0004] In view of at least one of the above technical problems, this utility model provides a normally open moving frame device and a scissor-type telescopic belt conveyor for tunneling roadways. By designing the normally open moving frame device, the scissor-type telescopic belt conveyor for tunneling roadways achieves automated telescopic function, allowing it to move along the track with a crawler-mounted crusher. It has advantages such as energy saving, safety, and high efficiency. The specific technical solution is as follows: A normally open moving frame device includes two moving frame mechanisms arranged in a front-to-back manner. A telescopic cylinder is connected in the middle between the two moving frame mechanisms, and pull-out telescopic sleeves are connected opposite to each other on both sides. The bottom of the outer tube of the pull-out telescopic sleeve is equipped with a track wheel. The distance between the two moving frame mechanisms is controlled by the telescopic movement of the telescopic cylinder. A normally open rail clamp is provided on each of the left and right sides of the moving frame mechanism, and the normally open rail clamp includes a guide wheel. The moving frame mechanism is equipped with a pulley frame mechanism.

[0005] In some embodiments of this disclosure, the moving frame mechanism includes a base frame, with both ends of the telescopic cylinder connected to the base frames of the front and rear moving frame mechanisms respectively, and both ends of the pull-out telescopic sleeve connected to the base frames of the front and rear moving frame mechanisms respectively; normally open rail clamps are provided on the left and right sides of the base frame; and a pulley frame mechanism is connected to the top surface of the base frame.

[0006] In some embodiments of this disclosure, the base frame is an H-shaped frame, which includes a front crossbeam and a rear crossbeam. A connecting beam is fixed between the front crossbeam and the rear crossbeam, and a normally open rail clamp is disposed between the front crossbeam and the rear crossbeam.

[0007] In some embodiments of this disclosure, the front side of the base frame of the front moving mechanism is provided with a traction connection structure, and the rear side of the base frame of the rear moving mechanism is also provided with a traction connection structure.

[0008] In some embodiments of this disclosure, the traction connection structure is at least one of a traction nose, a traction hole, or a traction recess.

[0009] In some embodiments of this disclosure, a buffer mechanism is provided at the center of the rear side of the base frame of the rear transfer mechanism.

[0010] In some embodiments of this disclosure, the telescopic cylinder is a double-acting cylinder.

[0011] In some embodiments of this disclosure, the top surface of the outer tube of the pull-out telescopic sleeve is also provided with a pulley frame mechanism.

[0012] In some embodiments of this disclosure, the pulley frame mechanism on the top surface of the outer tube of the pull-out telescopic sleeve is located in the area above the track wheel.

[0013] A scissor-type telescopic conveyor belt for tunneling includes a scissor-type telescopic conveyor and the aforementioned normally open moving frame device, wherein the rear end of the scissor-type telescopic conveyor is detachably connected to the front end of the front moving frame mechanism.

[0014] Compared with existing technologies, the above-mentioned normally open moving frame device and scissor-type telescopic belt conveyor for tunneling have the following advantages: This utility model achieves automated telescopic function of scissor-type telescopic belt conveyor in tunneling by designing a normally open moving frame device, which can effectively match the dynamic of the tunneling machine, improve tunneling efficiency, and save the operation time and manpower of the tunneling roadway; The structure of this utility model is intuitive and easy to operate. It does not involve complicated transmission and coordination, has a low failure rate and is easy to maintain. Moreover, it adopts a normally open rail clamping mechanism design, which automatically releases the rail in the working state, resulting in low energy consumption. Attached Figure Description

[0015] Figure 1This is a three-dimensional schematic diagram of the normally open moving frame device in the structure of this utility model from one perspective. Figure 2 This is a three-dimensional schematic diagram of the normally open rail clamp in the structure of this utility model from one perspective. Figure 3 This is a two-dimensional schematic diagram of the guide wheel installation state in the structure of this utility model from a second perspective; Figure 4 This is a three-dimensional schematic diagram of the scissor-type telescopic belt frame for tunneling in the structure of this utility model from a third perspective. Figure 5 This is a three-dimensional schematic diagram from a fourth perspective of the scissor-type telescopic conveyor device in the structure of this utility model. The following are the labels in the diagram: 1. Shifting mechanism; 11. Normally open rail clamp; 111. Guide wheel; 12. Base frame; 121. Traction connection structure; 21. Telescopic cylinder; 22. Pull-out telescopic sleeve; 221. Track wheel; 3. Belt pulley frame mechanism; 4. Buffer mechanism; 5. Scissor telescopic conveyor device. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application. The terms "comprising" and "equivalent to," and any variations thereof, are open-ended and intended to cover non-exclusive inclusion.

[0017] Unless otherwise specified, the term "connection" used in this disclosure includes both direct and indirect connections. In the description of this application, it should be understood that the directional terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. "Inner" and "outer" refer to the orientation or positional relationship shown from the front to the middle of the normally open moving frame device. These orientations or positional relationships are for descriptive purposes only and do not indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application.

[0018] This application designs a normally open moving frame device, including two moving frame mechanisms 1 arranged front and rear. The moving frame mechanism 1 at the front is referred to as the front moving frame mechanism 1, and the moving frame mechanism 1 at the rear is referred to as the rear moving frame mechanism 1. This description is for ease of description only. A telescopic cylinder 21 is connected in the middle between the two moving frame mechanisms 1, and pull-out telescopic sleeves 22 are connected opposite to each other on both sides. The bottom of the outer tube of the pull-out telescopic sleeve 22 is equipped with a track wheel 221. The distance between the two moving frame mechanisms 1 is controlled by the extension and retraction of the telescopic cylinder 21; that is, when the telescopic cylinder 21 is in the retracted state, the two moving frame mechanisms 1 are close to each other, and when the telescopic cylinder 21 is in the extended state, the two moving frame mechanisms 1 are far apart. Normally open rail clamps 11 are provided on each of the left and right sides of the moving frame mechanism 1. Each normally open rail clamp 11 includes a guide wheel 111. The wheel spacing between the left and right guide wheels 111 and the left and right track wheels 221 is the same, and they share a common guide rail during use. The moving frame mechanism 1 is equipped with a pulley frame mechanism 3. When in use, the pulley frame mechanism 3 is equipped with a mining conveyor belt. The installation method of the pulley frame mechanism 3 and the belt needs to be flexibly adjusted according to the conditions of the work site. This installation method is a conventional technical means for mining belt conveyors and is not a research and development topic of the project involved in this technical solution. Those skilled in the art can adjust it themselves, and it will not be described in detail here.

[0019] A scissor-type telescopic belt conveyor for tunneling is also designed, including a scissor-type telescopic conveyor 5 and the above-mentioned normally open frame shifting device. The rear end of the scissor-type telescopic conveyor 5 is detachably connected to the front end of the front frame shifting mechanism 1. The scissor-type telescopic conveyor 5 is also equipped with guide rail wheels. The left and right wheel distances of its guide rail wheels are consistent with those of the guide wheels 111 and the track wheels 221, and they share a single guide rail during use.

[0020] This design achieves automated telescopic function of scissor-type telescopic belt conveyor in tunneling by using a normally open moving frame device. It can effectively match the dynamic of the tunneling machine, improve tunneling efficiency, and save working time and manpower in tunneling. It has the advantages of intuitive structure and convenient operation, no complicated transmission coordination, low failure rate and easy maintenance. Moreover, it adopts a normally open rail clamping mechanism design, which automatically releases the rail in the working state, resulting in low energy consumption.

[0021] It should be noted that the scissor-type telescopic conveyor 5 includes several belt frames arranged in a front-to-back manner. The bottom of the belt frames is equipped with guide wheels. Each belt frame is connected by a scissor-type telescopic frame. The single-shift travel distance of the scissor-type telescopic frame can reach more than 50 meters. Compared with the traditional short-stroke shifting scheme, it reduces the start-stop frequency of the actuator and greatly improves the continuity of tunneling.

[0022] Before use, connect the rear of the scissor-type telescopic conveyor 5 to the front of the normally open moving frame device. After assembly, place it on the guide rail of the tracked crusher. Rigidly connect the conveying device of the tracked crusher to the front end of the scissor-type telescopic conveyor 5, so that the tracked crusher and the scissor-type telescopic conveyor 5 can move synchronously along the guide rail. The rear of the normally open moving frame device is flexibly connected to the rear stepping hopper via a chain and / or rope. At this time, the normally open rail clamp 11 is in the normally open state without clamping.

[0023] When the tracked crusher is performing tunneling operations, the scissor-type telescopic conveyor 5 extends forward to ensure the continuous tunneling operation.

[0024] When the tracked crusher stops working or the scissor telescopic structure of the scissor telescopic conveyor 5 extends to its maximum, the normally open rail clamp 11 of the rear moving frame mechanism 1 clamps the guide rail and achieves relative displacement and stillness with the guide rail. Then the telescopic cylinder 21 extends, and the telescopic sleeve 22 extends synchronously with the telescopic cylinder 21. The extension of the telescopic cylinder 21 supports and pushes the front moving frame mechanism 1 to move forward. The front moving frame mechanism 1 pushes the scissor telescopic conveyor 5 to move forward along the guide rail.

[0025] After the required forward movement is completed, the normally open rail clamp 11 of the front moving frame mechanism 1 clamps the guide rail, the normally open rail clamp 11 of the rear moving frame mechanism 1 releases the guide rail, the telescopic cylinder 21 performs a retraction action, the front moving frame mechanism 1 and the rear moving frame mechanism 1 move closer to each other, and at the same time, the telescopic sleeve 22 is pulled out to retract, completing the overall migration of the normally open moving frame device.

[0026] Reversing the above steps allows you to perform a backtracking task.

[0027] The above embodiments illustrate three examples of implementing the aforementioned technical solutions. The term "embodiment" as used herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various locations within the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Where there is no conflict, the various embodiments in this application can be combined with each other.

[0028] Embodiment 1 discloses a normally open moving frame device, including two moving frame mechanisms 1 arranged in a front-to-back manner.

[0029] A telescopic cylinder 21 is connected in the middle between the two shifting mechanisms 1. In this embodiment, the stroke of the telescopic cylinder 21 can reach 1200mm, which greatly improves the efficiency of the shifting device and allows the scissor lift telescopic belt frame to complete the telescopic operation more quickly. The telescopic cylinder 21 is a double-acting cylinder and is equipped with a hydraulic system. Pull-out telescopic sleeves 22 are connected to opposite sides of the telescopic cylinder 21. The bottom of the outer tube of the pull-out telescopic sleeve 22 is equipped with a track wheel 221. The distance between the two shifting mechanisms 1 is controlled by the telescopic movement of the telescopic cylinder 21. Each of the left and right sides of the shifting mechanism 1 is provided with a normally open rail clamp 11. The normally open rail clamp 11 includes a wheel frame, and the wheel frame is equipped with guide wheels 111.

[0030] The shifting mechanism 1 is equipped with a pulley frame mechanism 3. In use, the pulley frame mechanism 3 is fitted with a belt.

[0031] The frame-shifting mechanism 1 includes a base frame 12, with the two ends of the telescopic cylinder 21 connected to the base frames 12 of the front and rear frame-shifting mechanisms 1 respectively, and the two ends of the pull-out telescopic sleeve 22 connected to the base frames 12 of the front and rear frame-shifting mechanisms 1 respectively; a normally open rail clamp 11 is provided on the left and right sides of the base frame 12; and a pulley frame mechanism 3 is connected to the top surface of the base frame 12.

[0032] The front side of the base frame 12 of the front transfer mechanism 1 is provided with a traction connection structure 121, and the rear side of the base frame 12 of the rear transfer mechanism 1 is also provided with a traction connection structure 121. The traction connection structure 121 is at least one of a traction nose, a traction hole, or a traction recessed mating surface. In this embodiment, a traction nose structure is used.

[0033] A scissor-type telescopic belt conveyor for tunneling is also disclosed, including a scissor-type telescopic conveyor 5 and the above-mentioned normally open frame shifting device. The rear end of the scissor-type telescopic conveyor 5 is detachably connected to the front end of the front frame shifting mechanism 1. In this embodiment, threaded fasteners are used for connection.

[0034] Example 2 discloses a normally open moving frame device and a scissor-type telescopic belt conveyor for tunneling. The difference between this example and Example 1 is that the base frame 12 is an H-shaped frame, including a front crossbeam and a rear crossbeam. A connecting beam is fixed between the front and rear crossbeams, and a normally open rail clamp 11 is connected between the front and rear crossbeams. A buffer mechanism 4 is provided in the middle of the rear side of the base frame 12 of the rear moving frame mechanism 1. In case of sudden working conditions such as uphill or power outages, the buffer mechanism 4 can reduce the impact load on the normally open moving frame device and subsequent equipment, preventing deformation of the normally open moving frame device and guide rail structure due to overload. In this example, the buffer mechanism 4 is a rubber block. A pulley frame mechanism 3 is also provided on the top surface of the outer tube of the pull-out telescopic sleeve 22.

[0035] like Figures 1 to 5As shown, Embodiment 3 discloses a normally open moving frame device and a scissor-type telescopic belt conveyor for tunneling. The difference between this embodiment and Embodiment 2 is that the normally open rail clamp 11 is located between the front and rear crossbeams, but is not fixedly connected to the front and rear crossbeams. The lateral pushing of the normally open rail clamp 11 is achieved by the front and rear crossbeams. This structure can effectively increase the smoothness of the forward and backward movement of the normally open rail clamp 11 and avoid movement blockage caused by fixed connection angles. The belt pulley frame mechanism 3 on the top surface of the outer tube of the pull-out telescopic sleeve 22 is located in the area above the track wheel 221. In this embodiment, the buffer mechanism 4 is a buffer cylinder, and the outside of the buffer cylinder is fitted with a pull-out sleeve. In this technical solution, the front end of the buffer mechanism 4 is hinged to the traction connection structure 121 of the rear crossbeam of the rear moving frame mechanism 1.

[0036] It is understood that the above description is only for illustrating specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of disclosure of this application.

Claims

1. A normally open moving frame device, characterized in that: It includes two shifting mechanisms (1) arranged in front and behind, with a telescopic cylinder (21) connected in the middle between the two shifting mechanisms (1), and a pull-out telescopic sleeve (22) connected on both sides. The bottom of the outer tube of the pull-out telescopic sleeve (22) is equipped with a track wheel (221). The distance between the two shifting mechanisms (1) is controlled by the telescopic movement of the telescopic cylinder (21). Each of the left and right sides of the shifting mechanism (1) is equipped with a normally open rail clamp (11), which includes a guide wheel (111). The shifting mechanism (1) is equipped with a pulley frame mechanism (3).

2. The normally open moving frame device according to claim 1, characterized in that, The frame shifting mechanism (1) includes a base frame (12), the two ends of the telescopic cylinder (21) are respectively connected to the base frame (12) of the front and rear frame shifting mechanisms (1), the two ends of the pull-out telescopic sleeve (22) are respectively connected to the base frame (12) of the front and rear frame shifting mechanisms (1); the normally open rail clamp (11) is located on the left and right sides of the base frame (12); the pulley frame mechanism (3) is connected to the top surface of the base frame (12).

3. The normally open moving frame device according to claim 2, characterized in that, The base frame (12) is an H-shaped frame. The base frame (12) includes a front crossbeam and a rear crossbeam. A connecting beam is fixed between the front crossbeam and the rear crossbeam. A normally open rail clamp (11) is located between the front crossbeam and the rear crossbeam.

4. The normally open moving frame device according to claim 2, characterized in that, The front side of the base frame (12) of the front transfer mechanism (1) is provided with a traction connection structure (121), and the rear side of the base frame (12) of the rear transfer mechanism (1) is also provided with a traction connection structure (121).

5. The normally open moving frame device according to claim 4, characterized in that, The traction connection structure (121) is at least one of a traction nose, a traction hole, or a traction concave surface.

6. The normally open moving frame device according to claim 1, characterized in that, A buffer mechanism (4) is provided in the middle of the rear side of the base frame (12) of the rear transfer mechanism (1).

7. The normally open moving frame device according to claim 1, characterized in that, The telescopic cylinder (21) is a double-acting cylinder.

8. The normally open moving frame device according to claim 1, characterized in that, The top surface of the outer tube of the pull-out telescopic sleeve (22) is also provided with a pulley frame mechanism (3).

9. The normally open moving frame device according to claim 7, characterized in that, The pulley frame mechanism (3) on the top surface of the outer tube of the pull-out telescopic sleeve (22) is located in the area above the track wheel (221).

10. A scissor-type telescopic belt conveyor for tunneling, characterized in that, It includes a scissor-type telescopic conveyor (5) and a normally open transfer device as described in any one of claims 1-9, wherein the rear end of the scissor-type telescopic conveyor (5) is detachably connected to the front end of the front transfer mechanism (1).

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