Gas detection equipment

Abstract

The utility model relates to the technical field of gas detection, and particularly discloses a gas detection device which comprises a support and a detector body inserted in the front face of the support, the upper side of the detector body is communicated with a gas extraction guide pipe, and the back face of the support is provided with a distance adjusting component. The distance adjusting component comprises two fixing rods fixedly connected to the back face of the support, a guide component is arranged on the back face of the support, the fixing rods move in the supporting sleeves, limiting is conducted through clamping blocks, and therefore the distance between the support and the driving working face can be finely adjusted. According to the gas detector, the gap between the detector body and the driving working face and the gap between the gas extraction guide pipe and the driving working face are controlled, the gas detection precision of the detector body is further guaranteed, meanwhile, workers do not need to support the detector body and the gas extraction guide pipe for a long time, and the working intensity of the workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a gas detection device. Background Art

[0002] An optical gas detector is an instrument used to measure the concentration of gases such as gas and carbon dioxide. Gas detection is a very important safety measure. Gas leakage may cause explosion or fire, causing great harm to people and property. Gas detection is usually performed by professional safety engineers, miners, sanitation workers, construction and geological workers, etc.

[0003] When operating the optical gas detector to detect the detection points of the coal mine excavation working face, the main measurement points include the return air inlet, return air flow, the air flow within 20 meters near the electromechanical equipment, the chamber and the excavation working face. When testing the excavation working face, it is necessary to take the upper, middle and lower points for detection respectively, which should be less than 300 mm from the roof and not less than 200 mm from the side and coal wall;

[0004] In the existing technology, since the optical gas tester requires workers to hold it for a long time and need to squat and lift it repeatedly, if there are many detection positions, it will cause worker fatigue and affect detection efficiency. At the same time, the optical gas tester also requires workers to control the distance between the equipment and the detection position based on their own experience. If there is an error in the distance, the detection accuracy will be affected. Summary of the Invention

[0005] The purpose of the present utility model is to provide a gas detection device that can fine-tune the distance between the bracket and the excavation working face, so that the gap between the detector body and the exhaust duct and the excavation working face can be controlled, thereby ensuring the detection accuracy of the gas by the detector body. At the same time, the staff does not need to support the detector body and the exhaust duct for a long time, which also reduces the work intensity of the staff, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a gas detection device, comprising a bracket and a detector body plugged into the front of the bracket, the upper side of the detector body being connected to a gas extraction duct, and a spacing adjustment component being provided on the back of the bracket, the spacing adjustment component comprising two fixing rods fixedly connected to the back of the bracket;

[0007] The outer sides of the two fixed rods are provided with the same support sleeve, and a plurality of movable grooves are provided on the lower side of the fixed rods. The upper sides of the inner parts of the plurality of movable grooves are fixedly connected with a first return spring, and the bottom ends of the first return springs are fixedly connected with a card block, and the card block is slidably connected in the movable groove. A plurality of card slots are provided on the lower side of the inner part of the support sleeve, and the plurality of card blocks are clamped in the card slots after moving. A first magnetic block is fixedly connected on the upper side of the card block, and a plurality of brake wheels are fixedly connected on the lower side of the bracket. Two unlocking components are provided inside the support sleeve.

[0008] Preferably, the unlocking component includes a second magnetic block slidably connected to the upper side of the inner portion of the support sleeve, and a plurality of the first magnetic blocks are magnetically attracted to the same second magnetic block.

[0009] Preferably, a connecting plate is fixedly connected to the upper side of the second magnetic block, a pull rod is fixedly connected to the upper side of the connecting plate, and two scale lines are provided on the outer side of the support sleeve.

[0010] Preferably, limiting grooves are provided on both sides of the interior of the support sleeve, and limiting blocks are slidably connected to the interior of both sides of the connecting plate. After the two limiting blocks move, they are slidably connected in the two limiting grooves respectively. The opposite sides of the two limiting blocks are fixedly connected with second return springs, and one end of the opposite surfaces of the two second return springs are fixedly connected to the interior of both sides of the connecting plate respectively.

[0011] Preferably, a guide component is provided on the back of the bracket, and the guide component includes a motor drive unit arranged inside the bracket. The motor drive unit is composed of a drive motor, a screw rod, and a screw rod nut. A fixing cylinder is fixedly connected to the outer side of the screw rod nut inside the motor drive unit.

[0012] Preferably, an extension rod is slidably connected to the interior of the fixing cylinder, a roller is hingedly connected to a side of the extension rod away from the bracket, and the extension rod is sleeved on the outside of the exhaust duct.

[0013] Preferably, a third return spring is fixedly connected to one side of the extension rod close to the bracket, and the other end of the third return spring is fixedly connected to the inner cavity of the fixing cylinder.

[0014] Preferably, two guide blocks are fixedly connected to the outer side of the lead screw nut inside the motor drive unit, and guide grooves are provided on both sides of the interior of the bracket, and the two guide blocks are slidably connected in the two guide grooves respectively.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The fixed rod moves inside the support sleeve and is limited by the block, so that the distance between the bracket and the excavation working surface can be finely adjusted. Since the distance between the bracket and the excavation working surface can be finely adjusted, the gap between the detector body and the exhaust duct and the excavation working surface can be controlled, thereby ensuring the detection accuracy of the detector body for gas. At the same time, the staff does not need to support the detector body and the exhaust duct for a long time, which also reduces the staff's workload;

[0017] 2. Through the continuous contact between the roller and the excavation working surface, the exhaust duct can be adjusted accordingly according to the flatness of the excavation working surface. Since the position of the exhaust duct always runs synchronously with the extension rod, the distance between the exhaust duct and the excavation working surface is always kept at a fixed value, thereby ensuring the accuracy of the gas detection data of the detector body. The height of the exhaust pipe can also be quickly adjusted according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 This is a schematic diagram of a half-section structure of the present utility model;

[0021] Figure 3 This is a schematic diagram of a half-section structure of the support sleeve of the present invention;

[0022] Figure 4 For the utility model Figure 3 A magnified view of middle A;

[0023] Figure 5 It is a schematic diagram of the half-section structure of the fixing cylinder of the present utility model.

[0024] Description of reference numerals:

[0025] 1. Bracket; 2. Detector body; 3. Spacing adjustment component; 31. Fixed rod; 32. Support sleeve; 33. Movable slot; 34. First return spring; 35. Block; 36. Slot; 37. First magnetic block; 38. Unlocking component; 381. Second magnetic block; 382. Connecting plate; 383. Pull rod; 384. Limiting slot; 385. Limiting block; 386. Second return spring; 39. Brake wheel; 4. Guide component; 41. Motor drive unit; 42. Fixed cylinder; 43. Third return spring; 44. Extension rod; 45. Roller; 46. Guide slot; 47. Guide block; 5. Scale line. DETAILED DESCRIPTION

[0026] 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.

[0027] The utility model provides a technical solution:

[0028] See also Figures 1 to 5 A gas detection device includes a bracket 1 and a detector body 2 plugged into the front of the bracket 1. The upper side of the detector body 2 is connected to a gas extraction duct. The back of the bracket 1 is provided with a spacing adjustment component 3. The spacing adjustment component 3 includes two fixing rods 31 fixedly connected to the back of the bracket 1.

[0029] The outer sides of the two fixed rods 31 are sleeved with the same support sleeve 32, and the lower side of the fixed rod 31 is provided with multiple movable grooves 33, and the upper sides of the inner parts of the multiple movable grooves 33 are fixedly connected to the first return spring 34, and the bottom ends of the first return springs 34 are fixedly connected to the clamping blocks 35, and the clamping blocks 35 are slidably connected in the movable grooves 33. The lower side of the inner part of the support sleeve 32 is provided with multiple clamping grooves 36, and the multiple clamping blocks 35 are clamped in the clamping grooves 36 after moving. The upper side of the clamping blocks 35 is fixedly connected to the first magnetic block 37, and the lower side of the bracket 1 is fixedly connected to multiple brake wheels 39. Two unlocking components 38 are provided inside the support sleeve 32.

[0030] The unlocking assembly 38 includes a second magnetic block 381 slidably connected to the upper side of the inner portion of the support sleeve 32 , and the plurality of first magnetic blocks 37 are magnetically attracted to the same second magnetic block 381 .

[0031] A connecting plate 382 is fixedly connected to the upper side of the second magnetic block 381 , a pull rod 383 is fixedly connected to the upper side of the connecting plate 382 , and two scale lines 5 are provided on the outer side of the support sleeve 32 .

[0032] Limiting grooves 384 are provided on both sides of the interior of the support sleeve 32, and limiting blocks 385 are slidably connected to the interior of both sides of the connecting plate 382. After the two limiting blocks 385 move, they are slidably connected in the two limiting grooves 384 respectively. The opposite sides of the two limiting blocks 385 are fixedly connected with second return springs 386, and the opposite ends of the two second return springs 386 are fixedly connected to the interior of both sides of the connecting plate 382 respectively.

[0033] By adopting the above technical solution, first, the detector body 2 is inserted into the front of the bracket 1, and then the exhaust pipe above the detector body 2 is connected to the guide component 4. When the bracket 1 is pushed, the bracket 1 starts to move through the brake wheel 39 below it. After the support sleeve 32 contacts the excavation working surface, the workbench will drive the two fixed rods 31 to continue to move forward and continue to move inside the support sleeve 32. Because the side of the block 35 close to the support sleeve 32 is provided with an inclined surface, the block 35 is squeezed by the support sleeve 32 and retracted into the movable groove 33 below the fixed rod 31, and the block After the block 35 enters the support sleeve 32 and corresponds to the position of the slot 36, the first return spring 34 in the movable slot 33 pushes the block 35 so that the block 35 enters the slot 36. The inclined surface inside the slot 36 corresponds to the inclined surface of the block 35, so that the fixed rod 31 continues to drive the block 35 to move, and the block 35 can slide out of the slot 36 and move to the next slot 36, so that the distance between the bracket 1 and the excavation working surface is adjusted within the interval. When the bracket 1 moves in the direction, the block 35 is locked in the slot 36. When it is necessary to withdraw the block 35 from the slot 36 When the cam 382 is pulled out, the connecting plate 382 is pushed downward by the pull rod 383. As the connecting plate 382 gradually enters the interior of the support sleeve 32, the limit blocks 385 on both sides of the connecting plate 382 will detach from the inside of the limit groove 384 and enter the inner cavity on both sides of the connecting plate 382. After the second magnetic block 381 under the connecting plate 382 contacts the fixing rod 31, the second magnetic block 381 will attract the first magnetic block 37 above the card block 35, so that the card block 35 enters the movable groove 33. At this time, the fixing rod 31 can be pulled out from the interior of the support sleeve 32, and the two limit blocks 385 are re-engaged with the limit groove 384. After the positions are corresponding, the second return springs 386 inside the two sides of the connecting plate 382 will push the limit block 385, so that the limit block 385 will dock with the limit groove 384 again, and the connecting plate 382 will be restricted inside the upper side of the support sleeve 32. Since the distance between the bracket 1 and the excavation working surface can be fine-tuned, the gap between the detector body 2 and the exhaust duct and the excavation working surface can be controlled, thereby ensuring the detection accuracy of the detector body 2 for gas. At the same time, the staff does not need to support the detector body 2 and the exhaust duct for a long time, which also reduces the work intensity of the staff.

[0034] Specifically, such as Figure 5As shown, a guide component 4 is provided on the back of the bracket 1. The guide component 4 includes a motor drive unit 41 arranged inside the bracket 1. The motor drive unit 41 is composed of a drive motor, a screw rod, and a screw rod nut. A fixing cylinder 42 is fixedly connected to the outside of the screw rod nut inside the motor drive unit 41.

[0035] An extension rod 44 is slidably connected to the interior of the fixed cylinder 42 . A roller 45 is hingedly connected to the side of the extension rod 44 away from the bracket 1 . The extension rod 44 is sleeved on the outside of the air extraction conduit.

[0036] A third return spring 43 is fixedly connected to one side of the extension rod 44 close to the bracket 1 , and the other end of the third return spring 43 is fixedly connected to the inner cavity of the fixing cylinder 42 .

[0037] Two guide blocks 47 are fixedly connected to the outside of the lead screw nut inside the motor drive unit 41 . Guide grooves 46 are provided on both sides of the interior of the bracket 1 . The two guide blocks 47 are slidably connected in the two guide grooves 46 .

[0038] By adopting the above technical solution, first, after the distance between the detector body 2 and the exhaust duct and the excavation working face is determined, the drive motor inside the motor drive unit 41 drives the screw to rotate, so that the screw drives the fixed cylinder 42 to move up and down through the screw nut. While the screw nut moves up and down, the guide block 47 on the outside of the screw nut will slide in the two guide grooves 46 on both sides of the inside of the bracket 1. As the height of the fixed cylinder 42 changes, the extension rod 44 inside the fixed cylinder 42 also moves accordingly, and the roller 45 on the other side of the extension rod 44 will contact the excavation working face and roll on its surface. When the roller 45 contacts the excavation working face, the roller 45 will roll on the surface of the excavation working face. When it contacts the raised part of the working surface, the roller 45 will drive the extension rod 44 to retract into the fixed tube 42. When it enters the recess, the third return spring 43 will push the extension rod 44 inside the fixed tube 42, so that the roller 45 is always in contact with the excavation working surface. During the movement of the extension rod 44, the exhaust pipe will also be driven to adjust its position synchronously. Since the position of the exhaust pipe is always synchronized with the extension rod 44, the distance between the exhaust pipe and the excavation working surface is always kept at a fixed value, thereby ensuring the accuracy of the gas detection data of the detector body 2, and the height of the exhaust pipe can also be quickly adjusted according to needs.

[0039] Working principle: The detector body 2 is installed in the front of the bracket 1, and the exhaust pipe is connected to the extension rod 44. The bracket 1 starts to move through the brake wheel 39 below it, and after the support sleeve 32 contacts the excavation working surface, the fixed rod 31 continues to move inside the support sleeve 32, and after the block 35 enters the support sleeve 32 and corresponds to the position of the slot 36, the first return spring 34 inside the movable slot 33 will push the block 35, so that the block 35 enters the slot 36. After the fixed rod 31 continues to drive the block 35 to move, the block 35 can slide out of the slot 36 and move to the next slot 36. When it is necessary to withdraw the block 35 from the slot 36, the connecting plate 382 is pushed downward by the pull rod 383. After the second magnetic block 381 below the connecting plate 382 contacts the fixed rod 31, the second magnetic block 381 will adsorb the first magnetic block 37 above the block 35, so that the block 35 enters the movable slot 33. The fixing rod 31 can be pulled out from the inside of the support sleeve 32, and after the two limit blocks 385 are re-aligned with the positions of the limit grooves 384, the second return springs 386 on both sides of the connecting plate 382 will push the limit blocks 385 so that the limit blocks 385 are docked with the limit grooves 384 again, and the connecting plate 382 is restricted inside the upper side of the support sleeve 32. After the distance between the exhaust duct and the excavation working surface is determined, the motor drive unit 41 drives the fixing cylinder 42 to move up and down, and the outer guide blocks 47 of the motor drive unit 41 will slide in the two guide grooves 46 on both sides of the bracket 1. When the roller 45 contacts the protrusion of the excavation working surface, the roller 45 will drive the extension rod 44 to retract into the inside of the fixing cylinder 42. When entering the recessed part, the third return spring 43 will push the extension rod 44 inside the fixing cylinder 42, so that the roller 45 is always in contact with the excavation working surface. During the movement of the extension rod 44, the exhaust duct will also be driven to adjust its position synchronously.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas detection device, comprising a bracket (1) and a detector body (2) plugged into the front of the bracket (1), wherein the upper side of the detector body (2) is connected to a gas extraction duct, characterized in that: The back of the bracket (1) is provided with a spacing adjustment component (3), and the spacing adjustment component (3) comprises two fixing rods (31) fixedly connected to the back of the bracket (1); The outer sides of the two fixed rods (31) are sleeved with the same support sleeve (32); a plurality of movable grooves (33) are provided on the lower side of the fixed rods (31); the upper sides of the inner parts of the plurality of movable grooves (33) are fixedly connected with a first return spring (34); the bottom ends of the first return springs (34) are fixedly connected with a clamping block (35); the clamping block (35) is slidably connected in the movable groove (33); a plurality of clamping grooves (36) are provided on the lower side of the inner part of the support sleeve (32); the plurality of clamping blocks (35) are clamped in the clamping grooves (36) after being moved; the upper sides of the clamping blocks (35) are fixedly connected with a first magnetic block (37); a plurality of brake wheels (39) are fixedly connected to the lower side of the bracket (1); and two unlocking components (38) are provided inside the support sleeve (32).

2. A gas detection device according to claim 1, characterized in that: The unlocking component (38) comprises a second magnetic block (381) slidably connected to the upper side of the inner part of the support sleeve (32), and a plurality of the first magnetic blocks (37) are magnetically attracted to the same second magnetic block (381).

3. A gas detection device according to claim 2, characterized in that: The upper side of the second magnetic block (381) is fixedly connected to a connecting plate (382), the upper side of the connecting plate (382) is fixedly connected to a pull rod (383), and the outer side of the support sleeve (32) is provided with two scale lines (5).

4. A gas detection device according to claim 3, characterized in that: Limiting grooves (384) are provided on both sides of the support sleeve (32), and limiting blocks (385) are slidably connected to the inside of both sides of the connecting plate (382). After the two limiting blocks (385) move, they are slidably connected in the two limiting grooves (384) respectively. The opposite sides of the two limiting blocks (385) are fixedly connected with second return springs (386), and the opposite ends of the two second return springs (386) are fixedly connected to the inside of both sides of the connecting plate (382).

5. A gas detection device according to claim 1, characterized in that: A guide component (4) is provided on the back of the bracket (1), and the guide component (4) comprises a motor drive unit (41) arranged inside the bracket (1), and the motor drive unit (41) is composed of a drive motor, a screw rod, and a screw rod nut. A fixing cylinder (42) is fixedly connected to the outside of the screw rod nut inside the motor drive unit (41).

6. A gas detection device according to claim 5, characterized in that: An extension rod (44) is slidably connected inside the fixed cylinder (42), a roller (45) is hingedly connected to a side of the extension rod (44) away from the bracket (1), and the extension rod (44) is sleeved on the outside of the air extraction conduit.

7. A gas detection device according to claim 6, characterized in that: A third return spring (43) is fixedly connected to one side of the extension rod (44) close to the bracket (1), and the other end of the third return spring (43) is fixedly connected to the inner cavity of the fixed cylinder (42).

8. A gas detection device according to claim 5, characterized in that: Two guide blocks (47) are fixedly connected to the outside of the lead screw nut inside the motor drive unit (41), and guide grooves (46) are provided on both sides of the inside of the bracket (1), and the two guide blocks (47) are respectively slidably connected in the two guide grooves (46).

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