Smoke sensor for coal mine operation

Abstract

The utility model discloses a smoke sensor for coal mine operation, which comprises a sensor main body and two toothed plates connected to the top of the sensor main body, the toothed plates are connected with vertical plates in a sliding manner, a connecting box is connected between the two vertical plates, and a driving mechanism for driving the two toothed plates to move synchronously is connected in the connecting box. The driving mechanism comprises a rotating handle, a driving wheel, a transmission chain, two driven wheels and two tooth heads, the rotating handle is used for driving the driving wheel to rotate, the driving wheel is in transmission connection with the two driven wheels through the transmission chain, the driven wheels are connected with the corresponding tooth heads, the tooth heads are matched with the tooth plates, and the tooth plates are connected with the transmission chain. And the rotating handle is connected with a positioning mechanism for positioning the rotating handle. According to the utility model, the position of the sensor main body can be changed so as to adapt to the installation requirements of different heights, the applicability is strong, the rotary handle is positioned and locked, the toothed plate is limited, the stability of the sensor main body is improved, and the use is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine operations, in particular to a smoke sensor for coal mine operations. Background Art

[0002] Coal mines are generally divided into underground and open-pit mines. When the coal seam is far from the surface, tunnels are typically excavated underground, representing an underground mine. When the coal seam is close to the surface, the surface soil is directly removed and the coal is mined, representing an open-pit mine. During underground operations in coal mines, smoke sensors are used to detect smoke concentrations. When the smoke concentration reaches a preset value, a signal is transmitted to a controller, which in turn controls an alarm to sound an alert. These sensors are widely used in fire protection systems.

[0003] Existing smoke sensors are often directly fixed on the top of the wall, which makes the height of the sensor unadjustable, limits its scope of use, and requires improvement in applicability. Utility Model Content

[0004] The purpose of the utility model is to provide a smoke sensor for coal mine operations, which has the advantage of being able to change the position of the sensor body to adapt to installation requirements at different heights and has strong applicability, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke sensor for coal mine operations, comprising a sensor body and two tooth plates connected to the top of the sensor body, the tooth plates being slidably connected to a vertical plate, a connecting box being connected between the two vertical plates, a driving mechanism for driving the two tooth plates to move synchronously connected to the connecting box, the driving mechanism comprising a rotating handle, a driving wheel, a transmission chain, two driven wheels, and two tooth heads, the rotating handle being used to drive the driving wheel to rotate, the driving wheel being connected to the two driven wheels through a transmission chain, the driven wheels being connected to corresponding tooth heads, the tooth heads being matched with the tooth plates, and the rotating handle being connected to a positioning mechanism for positioning the rotating handle.

[0006] Preferably, the driving mechanism further includes two connecting shafts, the connecting shafts are rotatably connected to the connecting box, and both ends of the connecting shafts are connected to the driven wheel and the gear head.

[0007] Preferably, a notch is provided on the side of the vertical plate, the notch matches the tooth head, and the tooth head is meshed and connected with the tooth plate.

[0008] Preferably, the driving wheel is rotatably connected in the connection box, and the driving wheel is connected to the rotating handle through a shaft.

[0009] Preferably, the positioning mechanism includes a positioning head, a spring, a sliding block, and a sliding groove. The sliding groove is used to guide the sliding block. The positioning head is connected to the sliding block, and the positioning head matches the positioning groove arranged on the outside of the rotating handle. The spring is used to drive the sliding block to move toward the direction close to the rotating handle.

[0010] Preferably, the spring is located in the slide groove, and both ends of the spring are connected to the sliding block and the connecting box.

[0011] Preferably, the sliding block is slidably connected to the sliding groove.

[0012] Preferably, a guide groove is provided in the vertical plate, the guide groove is connected to the notch, and the tooth plate is slidably connected to the guide groove.

[0013] Preferably, the top of the vertical plate is connected to a top plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with a driving mechanism and a positioning mechanism, and the rotatable rotating handle drives the driving wheel to rotate, and then cooperates with the use of a transmission chain to realize the synchronous rotation of the two driven wheels, and the driven wheels drive the corresponding tooth heads to rotate, and the tooth heads cooperate with the tooth plates to make the two tooth plates rise and fall synchronously, thereby changing the position of the sensor body to adapt to installation requirements of different heights, and has strong applicability; when the sensor body is at an appropriate height position, the sliding block is directly released, and the stretched spring drives the sliding block to return to its position, so that the positioning head is connected to the corresponding positioning groove, thereby realizing the positioning and locking of the rotating handle, and then limiting the tooth plate, improving the stability of the sensor body, and being safe and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front perspective view of the present utility model;

[0016] Figure 2 This is a rear perspective view of the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the connection structure between the tooth plate and the tooth head of the utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the connection box of the present invention.

[0020] In the figure: 1. Sensor body; 2. Tooth plate; 3. Vertical plate; 4. Tooth head; 5. Connecting box; 6. Top plate; 7. Rotating handle; 8. Positioning groove; 9. Positioning head; 10. Spring; 11. Sliding block; 12. Slide groove; 13. Guide groove; 14. Notch; 15. Driven wheel; 16. Connecting shaft; 17. Transmission chain; 18. Drive wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 5 The present invention provides a smoke sensor for coal mine operations, comprising a sensor body 1 and two tooth plates 2 connected to the top of the sensor body 1. The tooth plates 2 are slidably connected to a vertical plate 3. A connecting box 5 is connected between the two vertical plates 3. The connecting box 5 protects the driven wheel 15, the driving wheel 18, and the transmission chain 17, preventing dust and impurities from adhering to the transmission chain 17, thereby ensuring the transmission effect between the transmission chain 17 and the driven wheel 15 and the driving wheel 18. A driving mechanism for driving the two tooth plates 2 to move synchronously is connected to the connecting box 5. The driving mechanism includes a rotating handle 7, a driving wheel 18, a transmission chain 17, two driven wheels 15, and two tooth heads 4. The rotating handle 7 is used to drive the driving wheel 18 to rotate. The driving wheel 18 is connected to the two driven wheels 15 through the transmission chain 17. The driven wheels 15 are connected to corresponding tooth heads 4. The tooth heads 4 match the tooth plates 2. The rotating handle 7 is connected to a positioning mechanism for positioning the rotating handle 7.

[0023] When adjusting the position of the sensor body 1, the rotating handle 7 drives the driving wheel 18 to rotate, and then the two driven wheels 15 are rotated through the cooperation of the transmission chain 17, so that the tooth head 4 drives the vertical plate 3 to rise and fall, which is convenient for controlling the height of the sensor body 1 to adapt to installation requirements of different heights and has strong applicability.

[0024] The driving mechanism further includes two connecting shafts 16 , which are rotatably connected to the connecting box 5 , and both ends of the connecting shaft 16 are connected to the driven wheel 15 and the tooth head 4 , thereby improving the rotation stability of the driven wheel 15 and the tooth head 4 .

[0025] A notch 14 is provided on the side of the vertical plate 3, which matches the tooth head 4. The tooth head 4 is meshed with the tooth plate 2. The two tooth heads 4 rotate in the same direction, and the meshing connection has high transmission efficiency, smooth transmission, and ensures a constant instantaneous transmission ratio.

[0026] The driving wheel 18 is rotatably connected to the connection box 5 , and the driving wheel 18 is connected to the rotating handle 7 through a shaft.

[0027] The positioning mechanism includes a positioning head 9, a spring 10, a sliding block 11, and a sliding groove 12. The sliding groove 12 is used to guide the sliding block 11. The positioning head 9 is connected to the sliding block 11 and matches the positioning groove 8 set on the outside of the rotating handle 7. The spring 10 is used to drive the sliding block 11 to move in the direction close to the rotating handle 7. Applying a pulling force to the sliding block 11 separates the positioning head 9 from the positioning groove 8, thereby loosening the rotating handle 7 and facilitating the rotation operation. At this time, the spring 10 is in an extended state. When the rotating handle 7 needs to be positioned, the sliding block 11 can be directly released. The extended spring 10 drives the sliding block 11 back to its original position, synchronously driving the positioning head 9 to return to its original position, so that the positioning head 9 connects with the corresponding positioning groove 8, and the rotating handle 7 is automatically locked.

[0028] During the rotation of the rotating handle 7 , the positioning groove 8 can increase the contact friction with the hand, making it easier to operate the rotating handle 7 and secondly facilitate docking with the positioning head 9 .

[0029] The spring 10 is located in the sliding groove 12 , and both ends of the spring 10 are connected to the sliding block 11 and the connecting box 5 .

[0030] The sliding block 11 is slidably connected to the sliding groove 12, which improves the stability of the movement of the sliding block 11, makes the positioning head 9 move steadily, avoids skew and deviation, and ensures the accuracy of docking with the positioning groove 8.

[0031] A guide groove 13 is provided in the vertical plate 3 , the guide groove 13 is connected to the notch 14 , and the tooth plate 2 is slidably connected to the guide groove 13 , thereby improving the stability of the tooth plate 2 when it is lifted or lowered.

[0032] The top of the vertical plate 3 is connected to a top plate 6 , which can be connected to the top of the wall by bolts to fix the top plate 6 , making subsequent operations on the sensor body 1 convenient.

[0033] Working principle: After fixing the top plate 6 to the top of the wall, rotate the rotating handle 7 to drive the driving wheel 18, and then cooperate with the use of the transmission chain 17 to achieve synchronous and unidirectional rotation of the two driven wheels 15. The driven wheel 15 drives the corresponding tooth head 4 to rotate. The tooth head 4 matches the tooth plate 2 to achieve the lifting and lowering of the tooth plate 2, and then drives the sensor body 1 to lift and lower, making it convenient to adjust the position of the sensor body 1 to meet the installation requirements of different heights, and has strong applicability. When the position of the dynamic sensor body 1 is adjusted, the stretched spring 10 drives the sliding block 11 to move back, synchronously driving the positioning head 9 to move back, so that the positioning head 9 is connected to the corresponding positioning groove 8, and the rotating handle 7 is locked to prevent the driving wheel 18, the driven wheel 15, and the tooth head 4 from rotating loose, achieving the purpose of positioning the tooth plate 2, improving the stability of the sensor body 1, and using it safely and reliably.

[0034] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke sensor for coal mine operation, characterized in that: The invention comprises a sensor body (1) and two tooth plates (2) connected to the top of the sensor body (1), wherein the tooth plates (2) are slidably connected to a vertical plate (3), a connection box (5) is connected between the two vertical plates (3), a driving mechanism for driving the two tooth plates (2) to move synchronously is connected in the connection box (5), and the driving mechanism comprises a rotating handle (7), a driving wheel (18), a transmission chain (17), two driven wheels (15), and two tooth heads (4), wherein the rotating handle (7) is used to drive the driving wheel (18) to rotate, the driving wheel (18) is connected to the two driven wheels (15) through the transmission chain (17), the driven wheel (15) is connected to the corresponding tooth head (4), the tooth head (4) matches the tooth plate (2), and the rotating handle (7) is connected to a positioning mechanism for positioning the rotating handle (7).

2. A smoke sensor for coal mine operation according to claim 1, characterized in that: The driving mechanism further comprises two connecting shafts (16), wherein the connecting shafts (16) are rotatably connected to the connecting box (5), and both ends of the connecting shafts (16) are connected to the driven wheel (15) and the tooth head (4).

3. A smoke sensor for coal mine operation according to claim 2, characterized in that: A notch (14) is provided on the side of the vertical plate (3), the notch (14) matches the tooth head (4), and the tooth head (4) is meshed and connected with the tooth plate (2).

4. The smoke sensor for coal mine operation according to claim 1, characterized in that: The driving wheel (18) is rotatably connected in the connection box (5), and the driving wheel (18) is connected to the rotating handle (7) via a shaft.

5. The smoke sensor for coal mine operation according to claim 1, characterized in that: The positioning mechanism comprises a positioning head (9), a spring (10), a sliding block (11), and a sliding groove (12). The sliding groove (12) is used to guide the sliding block (11). The positioning head (9) is connected to the sliding block (11), and the positioning head (9) matches the positioning groove (8) provided on the outside of the rotating handle (7). The spring (10) is used to drive the sliding block (11) to move in a direction close to the rotating handle (7).

6. The smoke sensor for coal mine operation according to claim 5, characterized in that: The spring (10) is located in the slide groove (12), and both ends of the spring (10) are connected to the sliding block (11) and the connection box (5).

7. The smoke sensor for coal mine operation according to claim 5, characterized in that: The sliding block (11) is slidably connected to the sliding groove (12).

8. The smoke sensor for coal mine operation according to claim 3, characterized in that: A guide groove (13) is provided in the vertical plate (3), the guide groove (13) is connected to the notch (14), and the tooth plate (2) is slidably connected to the guide groove (13).

9. The smoke sensor for coal mine operation according to claim 1, characterized in that: The top of the vertical plate (3) is connected to a top plate (6).

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