Low-noise main ventilation system

Abstract

The low-noise main ventilation system is characterized in that a transportation mechanism further comprises a base, an extension frame is fixedly installed in the middle of the top of the base, one side of the outer wall of the extension frame and a hydraulic cylinder are fixedly installed, the extension end of the hydraulic cylinder faces downwards, and a lifting frame is fixedly connected to the bottom of the extension end of the hydraulic cylinder; one side of the lifting frame penetrates into the extending frame, and the side edge of the lifting frame is further connected with the inner side of the extending frame in a sliding mode. Limiting wheels are rotationally connected to the upper end and the lower end of the inner side of the lifting frame; supporting rods are rotatably connected to the positions, located on the two sides of the extension frame, of the top face of the base, supporting wheels are rotatably connected to the middles of the outer side walls of the supporting rods, when the hydraulic cylinder drives the ventilation pipeline to be lifted, the supporting rods gradually rotate and unfold, the supporting wheels are away from the ground, the base supports the ventilation pipeline, the grounding area of the base is large, and the ventilation pipeline can be lifted conveniently. Therefore, the stability of the ventilation pipeline is improved, and external hoisting equipment is not needed when the ventilation pipeline is installed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine mining, in particular to a low-noise main ventilation system. Background Technique

[0002] Coal mine ventilation is a process of ensuring fresh air in the mine and the safety of workers through systematic air flow management. It maintains suitable environmental conditions for miners to work underground by removing harmful gases, controlling temperature and humidity, providing oxygen, and preventing fires. The ventilation system generally includes components such as air inlets, ventilation ducts, fans, and air outlets, forming an orderly air flow circulation network.

[0003] A Chinese patent discloses a coal mine ventilation device (publication number: CN213360157U). The support base fixed by the limiting slideway of this device can support the support seat, and at the same time, the limiting slideway can limit the support seat, enabling the coal mine ventilation device to be stably placed, so that the impeller in the coal mine ventilation device can work stably and reliably, facilitating the use of the coal mine ventilation device. However, the above device still has the following defects:

[0004] When installing the main body of the ventilation pipe, it is necessary to use external lifting equipment to hoist the ventilation pipe, which affects the flexibility during the installation of the ventilation pipe. In addition, multiple impellers are arranged in the above ventilation pipe. When the impellers start, they push the air flow to drive the ventilation pipe to vibrate, resulting in relatively high noise. For this reason, a low-noise main ventilation system is proposed to solve the above problems. Content of the Utility Model

[0005] The technical problems to be solved by the utility model are as follows: It is necessary to use external lifting equipment to hoist the ventilation pipe, which affects the flexibility during the installation of the ventilation pipe; when the impellers start, they push the air flow to drive the ventilation pipe to vibrate, resulting in relatively high noise.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] A low-noise main ventilation system includes a ventilation mechanism, and a transportation mechanism is arranged below the ventilation mechanism. The transportation mechanism includes a hydraulic cylinder;

[0008] It further includes:

[0009] The transportation mechanism further includes a base. The middle of the top of the base is fixedly installed with an extension frame. One side of the outer wall of the extension frame is fixedly installed with the hydraulic cylinder. The extension end of the hydraulic cylinder faces downward, and the bottom of the extension end of the hydraulic cylinder is fixedly connected with a lifting frame. One side of the lifting frame penetrates into the extension frame, and the side of the lifting frame is also slidably connected to the inner side of the extension frame;

[0010] Among them, the upper and lower ends inside the lifting frame are both rotatably connected with limiting wheels;

[0011] Among them, on both sides of the extension frame on the top surface of the base, support rods are rotatably connected, and support wheels are rotatably connected to the middle of the outer side walls of the support rods.

[0012] As a further scheme of the present utility model: The ventilation mechanism includes a ventilation duct, an exhaust port is fixedly installed at the upper end of the ventilation duct, limiting rails are fixedly connected to the top and bottom of the lower end of the ventilation duct, the length direction of the limiting rails is the same as the length direction of the lower end of the ventilation duct, and the inner side walls of the limiting rails are respectively slidably connected with the two limiting wheels.

[0013] As a further scheme of the present utility model: Connecting rings are sleeved and connected on both sides of the outer wall of the ventilation duct and located on both sides of the limiting rails. The upper and lower ends of the inner walls of the connecting rings are slidably connected with moving plates. On the side of the moving plate close to the ventilation duct, a shock pad is fixedly connected. The surface of the shock pad abuts against the outer wall of the ventilation duct. A push rod is fixedly installed in the middle of the moving plate, and the other end of the push rod extends to the outside of the connecting ring. The bottoms of the connecting rings are respectively rotatably connected with the support rods.

[0014] As a further scheme of the present utility model: The lower ends of the side walls of the support rods are slidably connected with insertion shafts. One end of the insertion shaft extends to the outside of the support rod and the end is arc-shaped. The other end of the insertion shaft is fixedly connected with a spring, and the spring is fixedly installed on the inner wall of the support rod on the side away from the insertion shaft.

[0015] As a further scheme of the present utility model: Limiting blocks are fixedly connected to the top of the base and close to the support rods. A slot is opened in the inner wall of the upper end of the limiting block. A resisting block is slidably connected to the inner wall of the slot. A screw rod is rotatably connected to the middle of one side of the resisting block. The outer wall of the screw rod is threadedly connected with the limiting block. One side of the screw rod extends to the outside of the limiting block, and a knob is fixedly connected to the end of the screw rod away from the resisting block.

[0016] As a further scheme of the present utility model: The inner wall of the slot is inserted with the insertion shaft, and the end of the insertion shaft abuts against the resisting block.

[0017] As a further scheme of the present utility model: A pressing plate is fixedly connected to one side of the top of the limiting block. The pressing plate is obliquely arranged as a whole, and the top end of the pressing plate extends above the insertion shaft. The side of the pressing plate abuts against the end of the insertion shaft.

[0018] The beneficial effects of the present utility model:

[0019] (1) The utility model supports the ventilation duct above through the base and the support rod. When the ventilation duct is in transportation, the support rod folds above the base, so that the support wheel on the side of the support rod abuts against the bottom surface below the base. Then, when the support wheel rolls, it is convenient to move the ventilation duct.

[0020] (2) The ventilation duct is lifted and lowered above the base by a hydraulic cylinder. When the hydraulic cylinder drives the ventilation duct to lift, the support rod gradually rotates and unfolds. Thus, the support wheel moves away from the ground, and then the base supports the ventilation duct. The grounding area of the base is relatively large, so as to improve the stability of the ventilation duct. When the support rod is fully unfolded, the support rod automatically locks with the base, so that the support rod assists the base to support the ventilation duct. When installing the ventilation duct, there is no need to rely on external hoisting equipment.

[0021] (3) The upper part of the support rod is installed on the surface side of the ventilation duct through a connecting ring. A moving plate with a shock pad is inserted inside the connecting ring. The shock pad is closely attached to the surface side of the ventilation duct. Thus, when the air flow in the ventilation pipe causes vibration, the shock pad buffers the impact caused by the vibration, thereby reducing the noise generated during the operation of the ventilation duct. The moving plate can be replaced to prevent the shock pad from aging and affecting the performance due to long-term use. Description of the Drawings

[0022] The following further explains the present utility model in conjunction with the drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 It is a schematic diagram of the structure when the ventilation mechanism in the present utility model is installed;

[0025] Figure 3 It is a schematic side view structure of the extension frame in the present utility model;

[0026] Figure 4 It is a schematic side view structure of the connecting ring in the present utility model;

[0027] Figure 5 It is a schematic diagram of the internal structure of the limit block in the present utility model.

[0028] In the figure: 1. Ventilation mechanism; 101. Ventilation duct; 102. Exhaust port; 103. Connecting ring; 104. Moving plate; 105. Shock pad; 106. Push rod; 107. Limit rail; 2. Transportation mechanism; 201. Base; 202. Limit block; 203. Slot; 204. Extrusion plate; 205. Block; 206. Screw; 207. Support rod; 208. Insertion shaft; 209. Spring; 210. Support wheel; 211. Extension frame; 212. Hydraulic cylinder; 213. Lifting frame; 214. Limit wheel. Detailed Implementation Modes

[0029] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0030] As Figures 1-5 shown, a low-noise main ventilation system includes a ventilation mechanism 1. A transportation mechanism 2 is arranged below the ventilation mechanism 1. The transportation mechanism 2 includes a hydraulic cylinder 212; further includes: The transportation mechanism 2 also includes a base 201. A stretching frame 211 is fixedly installed in the middle of the top of the base 201. One side of the outer wall of the stretching frame 211 is fixedly installed with the hydraulic cylinder 212. The extending end of the hydraulic cylinder 212 faces downward, and the bottom of the extending end of the hydraulic cylinder 212 is fixedly connected with a lifting frame 213. One side of the lifting frame 213 penetrates into the stretching frame 211, and the side of the lifting frame 213 is also slidably connected with the inner side of the stretching frame 211; wherein, limiting wheels 214 are rotatably connected to both the upper end and the lower end inside the lifting frame 213; wherein, support rods 207 are rotatably connected to both sides of the top surface of the base 201 where the stretching frame 211 is located. Support wheels 210 are rotatably connected to the middle of the outer side walls of the respective support rods 207. As Figures 1-2 shown, when the length direction of the support rod 207 is parallel to the base 201, the support wheel 210 abuts against the bottom surface, so as to facilitate the transportation of the ventilation duct 101 above the base 201;

[0031] The ventilation mechanism 1 includes a ventilation duct 101. An exhaust port 102 is fixedly installed at the upper end of the ventilation duct 101. Limiting rails 107 are fixedly connected to both the top and the bottom of the lower end of the ventilation duct 101. The length direction of the limiting rails 107 is the same as the length direction of the lower end of the ventilation duct 101. The inner side walls of the limiting rails 107 are respectively slidably connected with the two limiting wheels 214. As Figures 1-3 shown, when the ventilation duct 101 is lifted, the limiting wheels 214 slide inside the limiting rails 107;

[0032] Connection rings 103 are sleeved and connected to both sides of the outer wall of the ventilation duct 101 and located at the positions of the limiting rails 107. Moving plates 104 are slidably connected to both the upper end and the lower end of the inner wall of each connection ring 103. A shock-absorbing pad 105 is fixedly connected to the side of the moving plate 104 close to the ventilation duct 101. The surface of the shock-absorbing pad 105 abuts against the outer wall of the ventilation duct 101. A push rod 106 is fixedly installed in the middle of the moving plate 104. The other end of the push rod 106 extends to the outside of the connection ring 103. The bottoms of the respective connection rings 103 are respectively rotatably connected to the support rods 207. As Figures 1-2 、 Figure 4As shown, push the push rod 106 outside the connecting ring 103, and then separate the moving plate 104 from the connecting ring 103;

[0033] At the lower end of the side wall of each support rod 207, there is a sliding connection with an insertion shaft 208. One end of the insertion shaft 208 extends outside the support rod 207 and the end is arc-shaped. The other end of the insertion shaft 208 is fixedly connected with a spring 209. The spring 209 is fixedly installed on the inner wall of the support rod 207 on the side away from the insertion shaft 208. As Figure 5 shown, the spring 209 pushes the insertion shaft 208 out of the support rod 207;

[0034] At the top of the base 201 and near the support rod 207, there are fixedly connected limit blocks 202. The upper inner wall of the limit block 202 is provided with a slot 203. The inner wall of the slot 203 is slidably connected with a resisting block 205. In the middle of one side of the resisting block 205, there is a rotating connection with a screw rod 206. The outer wall of the screw rod 206 is threadedly connected with the limit block 202. One side of the screw rod 206 extends outside the limit block 202, and at the end of the screw rod 206 away from the resisting block 205, there is a fixedly connected knob. As Figure 5 shown, rotate the screw rod 206 to drive the resisting block 205 to move along the inner side of the slot 203, so that the resisting block 205 can push the insertion shaft 208 out of the slot 203, thus facilitating the release of the rotational lock of the support rod 207;

[0035] The inner wall of the slot 203 is inserted with the insertion shaft 208. The end of the insertion shaft 208 abuts against the resisting block 205. On one side of the top of the limit block 202, there is a fixedly connected pressing plate 204. The pressing plate 204 is obliquely arranged as a whole, and the top end of the pressing plate 204 extends above the insertion shaft 208. The side of the pressing plate 204 abuts against the end of the insertion shaft 208. As Figures 1-2 、 Figure 5 shown, when the support rod 207 rotates, the insertion shaft 208 first contacts the pressing plate 204, and when the support rod 207 continues to rotate, the insertion shaft 208 is gradually pushed into the support rod 207 by the pressing plate 204.

[0036] The working principle of the present utility model:

[0037] When the ventilation duct 101 needs to be installed, with the help of the support wheels 210 in contact with the ground, push the ventilation mechanism 1 as a whole to move. When it moves to the installation point, start the hydraulic cylinder 212 and drive the extension end to contract. Thus, the extension end drives the lifting frame 213 to lift along the inner side of the extension frame 211. The limit wheels 214 inside the lifting frame 213 push the limit rail 107 and drive the ventilation duct 101 to move up as a whole. Thus, the support rod 207 rotates and unfolds between the base 201 and the connecting ring 103. At the same time, the support wheels 210 are away from the ground, and gradually change to be supported by the base 201 on the ground;

[0038] During the rotation of the support rod, the insertion shaft 208 gradually approaches the limit block 202, and the insertion shaft 208 abuts against the surface of the extrusion plate 204, so that the insertion shaft 208 is gradually pushed into the inside of the support rod 207. When the support rod 207 rotates in place, the support rod 207 is perpendicular to the base 201. At the same time, the insertion shaft 208 is exactly aligned with the slot 203. At this time, the spring 209 pushes the insertion shaft 208 into the inside of the slot 203, and the rotation of the support rod 207 is blocked due to the limitation of the insertion shaft 208. Then each support rod 207 is locked between the base 201 and the connecting ring 103, and the support rod 207 bears and supports the ventilation duct 101 above.

[0039] The above has described an embodiment of the present invention in detail, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A low-noise main ventilation system, comprising a ventilation mechanism (1), a transport mechanism (2) being arranged below the ventilation mechanism (1), and the transport mechanism (2) comprising a hydraulic cylinder (212); It is characterized in that Also includes: The transport mechanism (2) further comprises a base (201), an extension frame (211) is fixedly mounted in the middle of the top of the base (201), one side of the outer wall of the extension frame (211) is fixedly mounted to a hydraulic cylinder (212), the extension end of the hydraulic cylinder (212) faces downward, and a lifting frame (213) is fixedly connected to the bottom of the extension end of the hydraulic cylinder (212), one side of the lifting frame (213) penetrates into the extension frame (211), and the side edge of the lifting frame (213) is also slidably connected to the inner side of the extension frame (211); The upper end and the lower end of the inner side of the lifting frame (213) are both rotatably connected to the limiting wheels (214); Wherein, the top surface of the base (201) is rotatably connected to support rods (207) on both sides of the extension frame (211), and the middle part of the outer side wall of each support rod (207) is rotatably connected to a support wheel (210).

2. A low-noise main ventilation system according to claim 1, characterized in that: The ventilation mechanism (1) comprises a ventilation duct (101), an exhaust port (102) being fixedly mounted at the upper end of the ventilation duct (101), and a limit rail (107) being fixedly connected to the top and bottom of the lower end of the ventilation duct (101), the length direction of the limit rail (107) being consistent with the length direction of the lower end of the ventilation duct (101), and the inner side wall of the limit rail (107) being slidably connected to two limit wheels (214) respectively.

3. A low-noise main ventilation system according to claim 2, characterized in that: The outer wall of the ventilation duct (101) and both sides of the limit rail (107) are sleeved with connecting rings (103), and the upper and lower ends of the inner walls of each connecting ring (103) are slidably connected with a movable plate (104). The movable plate (104) is fixedly connected with a shock-absorbing pad (105) on a side close to the ventilation duct (101), and the surface of the shock-absorbing pad (105) is against the outer wall of the ventilation duct (101). A push rod (106) is fixedly installed in the middle of the movable plate (104), and the other end of the push rod (106) extends to the outside of the connecting ring (103). The bottom of each connecting ring (103) is rotatably connected to a support rod (207).

4. A low-noise main ventilation system according to claim 1, characterized in that: The lower end of the side wall of each support rod (207) is slidably connected to an insertion shaft (208), one end of the insertion shaft (208) extends to the outside of the support rod (207) and the end is arc-shaped, and the other end of the insertion shaft (208) is fixedly connected to a spring (209), and the spring (209) is located on the side away from the insertion shaft (208) and is fixedly installed on the inner wall of the support rod (207).

5. A low-noise main ventilation system according to claim 1, characterized in that: A limiting block (202) is fixedly connected to the top of the base (201) and near the support rod (207); a slot (203) is provided on the inner wall of the upper end of the limiting block (202); a stop block (205) is slidably connected to the inner wall of the slot (203); a screw rod (206) is rotatably connected to the middle of one side of the stop block (205); an outer wall of the screw rod (206) is threadedly connected to the limiting block (202); one side of the screw rod (206) extends to the outside of the limiting block (202); and a knob is fixedly connected to the end of the screw rod (206) that is located away from the stop block (205).

6. A low-noise main ventilation system according to claim 5, characterized in that: The inner wall of the slot (203) is plugged into the insertion shaft (208), and the end of the insertion shaft (208) is in contact with the abutment block (205).

7. A low-noise main ventilation system according to claim 5, characterized in that: A squeeze plate (204) is fixedly connected to one side of the top of the limit block (202); the squeeze plate (204) is arranged obliquely as a whole, and the top end of the squeeze plate (204) extends above the insertion shaft (208); the side of the squeeze plate (204) abuts against the end of the insertion shaft (208).

Images