Length adjusting device for mining air duct

Abstract

The utility model relates to the technical field of length adjusting devices, and discloses a mining air duct length adjusting device which comprises an inner pipe and an outer pipe arranged on the outer side wall of the inner pipe. A fixing assembly is arranged on the outer pipe, and the fixing assembly comprises a positioning hole formed in the outer side wall of the inner pipe; the frame body is fixedly arranged on the outer side wall of the outer pipe; the sliding block is arranged in the frame body in a sliding manner; according to the adjusting device, the purpose of adjusting the length is achieved by controlling the bottom end of the inserting rod to be inserted into the positioning hole and leave the position, in the outer pipe, of the fixing inner pipe through the fixing assembly, and compared with an existing device with the positioning hole and the inserting rod exposed outside, alignment is more convenient during adjustment, and operation is convenient. According to the adjusting device, the baffle is erected at one end of the outer pipe through the positioning assembly by rotating the plate body, so that the ring body can be pulled, the ring body is limited to move towards the right side, the hand can be freed to adjust the length of the inner pipe, multiple workers do not need to cooperate for adjustment, and more manpower is saved.

Description

Technical Field

[0001] This utility model relates to the technical field of length adjustment devices, specifically a length adjustment device for a mine ventilation duct. Background Technology

[0002] A ventilation duct is a type of ventilation equipment specifically designed for coal mines, tunnels, and other underground engineering projects. Its main function is to provide the necessary airflow for underground operations to ensure air quality in the working environment, remove harmful gases, provide fresh air for workers, and also play an important life-saving role in emergencies such as fires.

[0003] Chinese utility model CN210979352U describes a suction duct that is easy to extend and retract. It is designed with a telescopic fixing structure. The principle is to adjust the length of the inner and outer tubes by telescopic adjustment, and then use a telescopic motor to drive the card block to insert into the card slot on the inner tube to fix the position of the inner tube inside the outer tube, thereby completing the fixation.

[0004] However, in existing devices, the locking blocks and slots are located internally, making them difficult to observe. This obstructs the view when adjusting the position of the inner tube and aligning the slots with the locking blocks, resulting in cumbersome operation. Therefore, a telescopic structure that is easier to operate was designed to address the aforementioned problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a mine ventilation duct length adjustment device, which has the advantage of convenient operation and solves the problem that the existing devices have internal locking blocks and slots, making it difficult to observe whether they are aligned.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a mine ventilation duct length adjustment device, comprising: an inner tube with an outer tube disposed on its outer side wall; a fixing assembly disposed on the outer tube, the fixing assembly comprising: a positioning hole opened on the outer side wall of the inner tube; a frame fixedly disposed on the outer side wall of the outer tube; a slider slidably disposed inside the frame; a spring disposed on the top of the slider, with its top end connected to the inner side wall of the frame; an insert rod disposed on one side of the slider, with its bottom end inserted into the positioning hole; a connecting rod rotatably disposed on one side of the slider; and a ring sleeved on the outer side wall of the outer tube, with one side rotatably connected to the other end of the connecting rod.

[0009] In some embodiments, the positioning holes, the frame, and the internal components of the frame are provided in four sets.

[0010] In some embodiments, the fixing component further includes: a vertical rod disposed inside the spring, with its top end connected to the inner sidewall of the frame, and its bottom end penetrating the slider and connected to the inner sidewall of the frame.

[0011] In some embodiments, the fixing component further includes a cone disposed at the bottom of the insert.

[0012] In some embodiments, the fixing component further includes a lever disposed on the outer side wall of the ring.

[0013] In some embodiments, the fixing component further includes: a groove formed on the outer side wall of the inner tube; and a protrusion disposed on the inner side wall of the outer tube and sliding inside the groove.

[0014] In some embodiments, a positioning component is provided at one end of the outer tube, the positioning component comprising: a plate rotatably disposed on one side of the ring body; and a baffle disposed at one end of the plate.

[0015] In some embodiments, the positioning component further includes: a through groove formed on the outer side wall of the baffle; and a protrusion disposed at one end of the outer tube.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a mine ventilation duct length adjustment device, which has the following beneficial effects:

[0018] 1. This adjustment device uses a fixing component to insert the bottom end of the control rod into the positioning hole, moving it away from the inner tube and into the outer tube to adjust the length. Compared with existing devices where the positioning hole and rod are exposed, this device is more convenient for alignment and operation during adjustment.

[0019] 2. This adjustment device, through the positioning component, uses a rotating plate to place the baffle at one end of the outer tube, which can pull the ring body, thereby restricting the ring body from moving to the right. This frees up hands to adjust the length of the inner tube, making it more labor-saving as multiple workers are not needed for adjustment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the connection between the ring body and the outer tube of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection between the ring body and the connecting rod of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the frame of this utility model.

[0024] In the diagram: 11. Inner tube; 12. Outer tube;

[0025] 2. Fixing component; 21. Positioning hole; 22. Frame; 23. Slider; 24. Spring; 241. Upright post; 25. Insert rod; 251. Cone; 26. Connecting rod; 27. Ring; 271. Toggle rod; 28. Groove; 29. ​​Raised strip;

[0026] 3. Positioning component; 31. Plate; 32. Baffle; 33. Through groove; 34. Protrusion. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0031] A ventilation duct is a type of ventilation equipment specifically designed for coal mines, tunnels, and other underground engineering projects. Its main function is to provide the necessary airflow for underground operations to ensure air quality in the working environment, remove harmful gases, provide fresh air for workers, and also play an important life-saving role in emergencies such as fires.

[0032] In related technologies, the length of the inner and outer tubes is adjusted by telescoping, and then a telescoping motor drives a locking block to insert into a slot on the inner tube to fix the inner tube's position inside the outer tube. However, in existing devices, both the locking block and the slot are located inside, making them difficult to observe. This obstructs the view when adjusting the inner tube's position and aligning the slot with the locking block, making the operation cumbersome.

[0033] To address some of the problems in related technologies, this application provides a mine ventilation duct length adjustment device. When the ventilation duct length needs to be adjusted, only the length of the inner tube 11 inside the outer tube 12 needs to be adjusted. First, push the ring 27 closer to the frame 22. While moving, it will squeeze the connecting rod 26 to rotate, causing one end of the connecting rod 26 to drive the slider 23 to move inside the frame 22. At the same time, the spring 24 is compressed. While the slider 23 moves, it will drive the insertion rod 25 to move, causing the bottom end of the insertion rod 25 to disengage from the positioning hole 21, thereby releasing the fixation of the inner tube 11. At this time, pull the inner tube 11 to move inside the outer tube 12 to adjust the length. After adjusting to the appropriate position, simply release the ring 27. The spring 24 will rebound and push the slider 23 to move downward inside the frame 22, while simultaneously driving the bottom end of the insertion rod 25 to insert into the positioning hole 21.

[0034] This application is described below with reference to the accompanying drawings and specific embodiments:

[0035] This application provides a mine ventilation duct length adjustment device, comprising: an inner tube 11 with an outer tube 12 disposed on its outer side wall; a fixing component 2 disposed on the outer tube 12, the fixing component 2 comprising: a positioning hole 21 opened on the outer side wall of the inner tube 11; a frame 22 fixedly disposed on the outer side wall of the outer tube 12; a slider 23 slidably disposed inside the frame 22; a spring 24 disposed on the top of the slider 23, and the top end connected to the inner side wall of the frame 22; an insertion rod 25 disposed on one side of the slider 23, and the bottom end inserted into the positioning hole 21; a connecting rod 26 rotatably disposed on one side of the slider 23; and a ring 27 sleeved on the outer side wall of the outer tube 12, and one side rotatably connected to the other end of the connecting rod 26.

[0036] When adjusting the length of the air duct, simply adjust the length of the inner tube 11 inside the outer tube 12. First, push the ring 27 closer to the frame 22. As it moves, it will squeeze the connecting rod 26 to rotate, causing one end of the connecting rod 26 to move the slider 23 inside the frame 22. At the same time, it will compress the spring 24. As the slider 23 moves, it will move the insertion rod 25, causing the bottom end of the insertion rod 25 to disengage from the positioning hole 21, thereby releasing the fixation of the inner tube 11. Then, pull the inner tube 11 to move inside the outer tube 12 to adjust the length. After adjusting to the appropriate position, simply release the ring 27. The spring 24 will rebound and push the slider 23 downward inside the frame 22, while simultaneously causing the bottom end of the insertion rod 25 to insert into the positioning hole 21.

[0037] In some embodiments, the positioning hole 21, the frame 22, and the internal components of the frame 22 are each provided with four sets.

[0038] The design includes four sets of four connection points on the outer wall of the inner tube 11, which can better fix the position of the inner tube and make the fixation more secure.

[0039] In some embodiments, the fixing component 2 further includes: a vertical rod 241 disposed inside the spring 24, with its top end connected to the inner wall of the frame 22, and its bottom end passing through the slider 23 and connected to the inner wall of the frame 22.

[0040] When in use, the design of the upright rod 241 allows the slider 23 to move up and down stably, and at the same time, it can prevent the spring 24 from bending when the spring 24 is compressed, thereby better protecting the spring 24 and extending its service life.

[0041] In some embodiments, the fixing component 2 further includes a cone 251 disposed at the bottom of the insertion rod 25.

[0042] When in use, the pointed tip at the bottom of the cone 251 makes it easier to insert into the positioning hole 21.

[0043] In some embodiments, the fixing component 2 further includes a lever 271 disposed on the outer side wall of the ring 27.

[0044] When in use, the lever 271 is designed to facilitate gripping and sliding the control ring 27 on the outer wall of the outer tube 12.

[0045] In some embodiments, the fixing component 2 further includes: a groove 28 formed on the outer side wall of the inner tube 11; and a protrusion 29 disposed on the inner side wall of the outer tube 12 and sliding inside the groove 28.

[0046] When the inner tube 11 is extended or retracted, the protrusion 29 slides inside the groove 28, which can limit the rotation of the inner tube 11, so that the positioning hole 21 can be on the same horizontal line as the insertion rod 25.

[0047] In some embodiments, a positioning component 3 is provided at one end of the outer tube 12. The positioning component 3 includes: a plate 31 rotatably disposed on one side of the ring 27; and a baffle 32 disposed at one end of the plate 31.

[0048] When the ring 27 is pushed to release the inner tube, the plate 31 can be rotated so that the baffle 32 at one end of the plate 31 rests on one end of the outer tube 12, which can limit the position of the ring 27 on the outer tube 12. At this time, the rod 25 will not move downward when the ring 27 is released, which makes it convenient to control the movement of the inner tube 11.

[0049] In some embodiments, the positioning component 3 further includes: a through groove 33 formed on the outer side wall of the baffle 32; and a protrusion 34 disposed at one end of the outer tube 12.

[0050] When the baffle 32 is placed on one end of the outer tube 12, the protrusion 34 is inserted into the through groove 33, which makes the position of the baffle 32 more stable and less likely to fall off from one end of the outer tube 12.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0052] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mine ventilation duct length adjustment device, comprising: The inner tube (11) has an outer tube (12) on its outer side wall; The feature is that a fixing component (2) is provided on the outer tube (12), and the fixing component (2) includes: A positioning hole (21) is provided on the outer side wall of the inner tube (11); The frame (22) is fixedly installed on the outer side wall of the outer tube (12); The slider (23) is slidably disposed inside the frame (22); A spring (24) is disposed on the top of the slider (23), and its top end is connected to the inner sidewall of the frame (22); The insert rod (25) is located on one side of the slider (23) and its bottom end is inserted into the positioning hole (21); The connecting rod (26) is rotatably mounted on one side of the slider (23); The ring (27) is fitted onto the outer wall of the outer tube (12) and is rotatably connected to the other end of the connecting rod (26) on one side.

2. The mine ventilation duct length adjustment device according to claim 1, characterized in that: The positioning hole (21), the frame (22), and the internal components of the frame (22) are all provided with four sets.

3. The mine ventilation duct length adjustment device according to claim 1, characterized in that: The fixing component (2) also includes: The upright (241) is located inside the spring (24), with its top end connected to the inner wall of the frame (22) and its bottom end passing through the slider (23) and connected to the inner wall of the frame (22).

4. The mine ventilation duct length adjustment device according to claim 1, characterized in that: The fixing component (2) also includes: A cone (251) is disposed at the bottom of the insert (25).

5. The mine ventilation duct length adjustment device according to claim 1, characterized in that: The fixing component (2) also includes: A lever (271) is disposed on the outer wall of the ring (27).

6. The mine ventilation duct length adjustment device according to claim 1, characterized in that: The fixing component (2) also includes: A groove (28) is formed on the outer side wall of the inner tube (11); A protrusion (29) is provided on the inner sidewall of the outer tube (12) and slides inside the groove (28).

7. The mine ventilation duct length adjustment device according to claim 1, characterized in that: One end of the outer tube (12) is provided with a positioning component (3), the positioning component (3) comprising: The plate (31) is rotatably disposed on one side of the ring (27); A baffle (32) is disposed at one end of the plate (31).

8. The mine ventilation duct length adjustment device according to claim 7, characterized in that: The positioning component (3) also includes: A through groove (33) is formed on the outer side wall of the baffle (32); A protrusion (34) is provided at one end of the outer tube (12).

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