Air duct measurement auxiliary device

Abstract

The utility model discloses an auxiliary device for measuring an air duct, which belongs to the technical field of air duct measuring equipment and comprises a connecting block and a hanging ring connected to the top of the connecting block, two rotating arms rotating relatively are arranged at the bottom of the connecting block, a reed switch is mounted on one rotating arm, a permanent magnet corresponding to the reed switch is mounted on the other rotating arm, and the connecting block is connected with the hanging ring. A spring is connected between the two rotating arms, and the bottoms of the rotating arms are movably connected with clamp arms. When a local ventilator stops running or no wind exists in an air duct due to a certain reason, the two rotating arms of the device are closed under the action of gravity and the spring, at the moment, the reed pipe is close to the permanent magnet, the two reeds of the reed pipe are attracted by each other through the magnetic force of the permanent magnet, a circuit is switched on, and a signal is sent to the ground; when the local ventilator works normally, the air duct expands to enable the two rotating arms to be opened, at the moment, the reed switch is separated from the permanent magnet, the circuit is disconnected, and the air volume in the air duct is normal.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wind tube measuring device, in particular to a wind tube measuring auxiliary device, belongs to wind tube measuring equipment technical field. BACKGROUND

[0002] The wind tube state sensor is a monitoring device of the working state of the wind tube of the underground tunneling working face of the coal mine, which is connected by a set of clamping mechanisms using a reed tube assembly and is suspended above the wind tube, and the clamp arms are opened or closed along with the inflation and depression of the wind tube, thereby driving the reed tube contacts to be disconnected or closed, and the communication circuit is always opened or conducted, so that the working state of the wind tube is monitored.

[0003] Publication No. CN202788907U discloses a magnetic induction wind tube sensor, which comprises a connecting block, a first wind shield and a second wind shield pivoted to the connecting block, wherein a reed tube is connected between the connecting block and the first wind shield, and a permanent magnet is connected between the connecting block and the second wind shield; one end of the reed tube abuts against one end of the permanent magnet, and the other end of the reed tube is electrically connected to the other end of the reed tube through a warning device. The utility model utilizes the reed tube and the permanent magnet to connect the circuit and realize the monitoring of the wind volume of the wind tube, thereby avoiding the problem of failure of the warning device due to oxidation and poor contact of the traditional wind tube sensor.

[0004] However, the device still has the following problems: 1. The rotating support of the device is easily rusted by the underground environment, which affects the contact between the magnet and the reed tube, thereby affecting the reflection of the real situation of the wind tube;

[0005] 2. The device only relies on the gravity of the rotating support to realize the contact between the magnet and the reed tube, and in the use of long-distance wind tube, multiple fans need to be arranged, and only one fan in the middle does not work, which only leads to the reduction of wind speed and the reduction of wind tube tension, so that only relying on the gravity of the rotating support is easy to cause misjudgment and cannot reflect the situation.

[0006] The utility model provides a new solution. UTILITY MODEL CONTENT

[0007] The main purpose of the utility model is to solve the problems of the prior art, and provide a wind tube measuring auxiliary device.

[0008] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0009] The utility model provides a kind of wind tube measurement auxiliary device, including connecting block, and connecting ring in the top of the connecting block, the bottom of the connecting block is equipped with two opposite rotating swing arms, one of the swing arms is equipped with reed switch, the other swing arm is equipped with permanent magnet corresponding to the reed switch, spring is connected between the two swing arms, the bottom of the swing arm is movably connected with clamp arm.

[0010] Preferably, two rotation shafts are symmetrically arranged on the connecting block, and the two swing arms are rotatably connected to the connecting block via the rotation shafts.

[0011] Preferably, a gear is connected to one end of the swing arm close to the connecting block, and a rotation hole is formed in the middle of the gear to cooperate with the rotation shaft.

[0012] Preferably, a hanging ring is connected to the opposite side walls of the two swing arms to cooperate with the spring.

[0013] Preferably, a rubber pad is connected to the opposite side walls of the two clamp arms.

[0014] Preferably, a connecting sleeve is connected to the top of the connecting block, and a connecting rod is connected to the bottom of the ring to cooperate with the connecting sleeve.

[0015] Preferably, the clamp arm is sleeved on the outside of the swing arm, and a bolt is connected between the swing arm and the clamp arm.

[0016] Preferably, a mounting hole is formed in the swing arm to cooperate with the bolt.

[0017] Preferably, an adjusting groove is formed in the clamp arm to cooperate with the bolt.

[0018] Preferably, the swing arm is made of stainless steel.

[0019] The utility model discloses a kind of wind tube measurement auxiliary device, when local ventilator stops running or wind tube is caused by some reasons without wind, the two swing arms of the device are folded under the action of gravity and spring, at this time, reed switch is close to permanent magnet, the magnetic force of permanent magnet makes the two spring blades of reed switch mutually attract, circuit is connected, signal is sent to well, when local ventilator works normally, wind tube expands and makes the two swing arms open, at this time, reed switch is separated from permanent magnet, circuit is disconnected, it indicates that the wind volume in wind tube is normal, by the setting of spring, with the gravity of two swing arms itself, it can prevent swing arm from rusting and affect its rotation, so as not to affect the reflection to the real situation of wind tube, simultaneously, the real situation of wind tube can be quickly fed back when local fan stops and wind tube tension reduces. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1The whole structure side view of a preferred embodiment provided by the utility model is shown in the figure;

[0021] Figure 2 The whole structure side view of a preferred embodiment provided by the utility model is shown in the figure;

[0022] Figure 3 The connecting block structure schematic diagram of a preferred embodiment provided by the utility model is shown in the figure;

[0023] Figure 4 The rotating arm structure schematic diagram of a preferred embodiment provided by the utility model is shown in the figure;

[0024] Figure 5 The clamp arm structure schematic diagram of a preferred embodiment provided by the utility model is shown in the figure;

[0025] Figure 6 The ring structure schematic diagram of a preferred embodiment provided by the utility model is shown in the figure.

[0026] In the figure: 1, connecting block; 2, ring; 3, rotating arm; 4, dry reed; 5, permanent magnet; 6, spring; 7, clamp arm; 8, rotating shaft; 9, gear; 10, rotating hole; 11, hanging ring; 12, rubber pad; 13, connecting sleeve; 14, connecting rod; 15, bolt; 16, mounting hole; 17, adjusting groove. DETAILED DESCRIPTION

[0027] In order to make the person skilled in the art more clear and definite the technical scheme of the utility model, the utility model is described in further detail below in combination with examples and drawings, but the implementation mode of the utility model is not limited to this.

[0028] As Figures 1-6 shown, the wind pipe measurement auxiliary device provided by the embodiment comprises a connecting block 1 and a ring 2 connected at the top of the connecting block 1, the bottom of the connecting block 1 is provided with two rotating rotating arms 3, one of the rotating arms 3 is provided with a dry reed 4, the other rotating arm 3 is provided with a permanent magnet 5 corresponding to the dry reed 4, a spring 6 is connected between the two rotating arms 3, and the bottom of the rotating arm 3 is movably connected with a clamp arm 7. When the local ventilator stops running or there is no wind in the wind pipe due to some reasons, the two rotating arms 3 of the device are closed under the action of gravity and the spring 6, at this time, the dry reed 4 is close to the permanent magnet 5, the magnetic force of the permanent magnet 5 makes the two reed blades of the dry reed 4 attract each other, the circuit is connected, and a signal is sent to the well, when the local ventilator works normally, the wind pipe expands to make the two rotating arms 3 open, at this time, the dry reed 4 is separated from the permanent magnet 5, the circuit is disconnected, and it indicates that the wind volume in the wind pipe is normal, through the action of the spring 6 and the gravity of the two rotating arms 3, the rusting of the rotating arm 3 is prevented, and the reflection on the real situation of the wind pipe is not affected.

[0029] In the embodiment, as shown in Figure 1 , Figure 2 and Figure 3 , two rotating shafts 8 are symmetrically arranged on the connecting block 1, and the two rotating arms 3 are rotatably connected to the connecting block 1 through the rotating shafts 8, respectively. The end of the rotating arm 3 close to the connecting block 1 is connected with a gear 9, and the middle part of the gear 9 is provided with a rotating hole 10 matched with the rotating shaft 8. The gear 9 is arranged to enable the two rotating arms 3 to rotate synchronously.

[0030] In the embodiment, as shown in Figure 1 , Figure 3 and Figure 4 , the opposite side walls of the two rotating arms 3 are connected with a hanging ring 11 matched with the spring 6, the opposite side walls of the two clamp arms 7 are connected with a rubber pad 12, the top of the connecting block 1 is connected with a connecting sleeve 13, and the bottom of the lifting ring 2 is connected with a connecting rod 14 matched with the connecting sleeve 13. The hanging ring 11 is arranged to facilitate the disassembly and assembly of the spring 6, the rubber pad 12 is arranged to prevent the damage of the air duct, and the connecting sleeve 13 and the connecting rod 14 are arranged to be disassembled.

[0031] In the embodiment, as shown in Figure 1 , Figure 4 and Figure 5 , the clamp arm 7 is sleeved on the outside of the rotating arm 3, the rotating arm 3 and the clamp arm 7 are connected through a bolt 15, the rotating arm 3 is provided with a mounting hole 16 matched with the bolt 15, the clamp arm 7 is provided with an adjusting groove 17 matched with the bolt 15, and the rotating arm 3 is made of stainless steel. The bolt 15, the mounting hole 16 and the adjusting groove 17 are arranged to adjust the overall length of the rotating arm 3 and the clamp arm 7, so as to be suitable for air ducts of different sizes, and the rotating arm 3 made of stainless steel can prevent rusting.

[0032] In the embodiment, as shown in Figures 1-6 , the working process of the air duct measuring auxiliary device is as follows:

[0033] When the local ventilator stops running or for some reason there is no wind in the air duct, the two rotating arms 3 of the device are folded under the action of gravity and the spring 6. At this time, the reed switch 4 is close to the permanent magnet 5, the magnetic force of the permanent magnet 5 makes the two reed switches of the reed switch 4 attract each other, the circuit is connected, and a signal is sent to the well. When the local ventilator works normally, the air duct expands to open the two rotating arms 3. At this time, the reed switch 4 is separated from the permanent magnet 5, the circuit is disconnected, and it indicates that the air volume in the air duct is normal.

[0034] The above is only a further embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and concept of the present application within the scope disclosed by the present application, which belongs to the protection scope of the present application.

Claims

1. A kind of wind tube measurement auxiliary device, including connecting block (1), and the lifting ring (2) being connected in the top of connecting block (1), the bottom of connecting block (1) is equipped with two opposite rotating swing arms (3), one of the swing arms (3) is equipped with reed tube (4), the other swing arm (3) is equipped with permanent magnet (5) corresponding with reed tube (4), it is characterized in that, Spring (6) is connected between two rotating arms (3), and the bottom of the rotating arm (3) is movably connected with a clamp arm (7).

2. A draft tube measurement aid according to claim 1, wherein, Two rotating shafts (8) are symmetrically arranged on the connecting block (1), and the two rotating arms (3) are rotatably connected with the connecting block (1) through the rotating shafts (8).

3. A draft tube measurement aid according to claim 2, wherein, A gear (9) is connected to one end of the rotating arm (3) close to the connecting block (1), and a rotating hole (10) matched with the rotating shaft (8) is formed in the middle of the gear (9).

4. A draft tube measurement aid according to claim 1, wherein, A hanging ring (11) matched with the spring (6) is connected to the opposite side walls of the two rotating arms (3).

5. A draft tube measurement aid according to claim 1, wherein, A rubber pad (12) is connected to the opposite side walls of the two clamp arms (7).

6. A draft tube measurement aid according to claim 1, wherein, A connecting sleeve (13) is connected to the top of the connecting block (1), and a connecting rod (14) matched with the connecting sleeve (13) is connected to the bottom of the lifting ring (2).

7. A draft tube measurement aid according to claim 1, wherein, The clamp arm (7) is sleeved on the outside of the rotating arm (3), and a bolt (15) is connected between the rotating arm (3) and the clamp arm (7).

8. A draft tube measurement aid according to claim 7, wherein, An installation hole (16) matched with the bolt (15) is formed in the rotating arm (3).

9. A draft tube measurement aid according to claim 7, wherein, An adjusting groove (17) matched with the bolt (15) is formed in the clamp arm (7).

10. A draft tube measurement aid according to claim 1, wherein, The rotating arm (3) is made of stainless steel.

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