Movable combustible gas alarm

Abstract

The utility model discloses a movable combustible gas alarm, which belongs to the technical field of gas alarms, and comprises a rectangular tube, a screw lifting mechanism arranged on the rear side of the rectangular tube, pneumatic push-pull pieces arranged on two sides in the rectangular tube, and a mounting frame fixedly connected with the pneumatic push-pull pieces and provided with combustible gas alarm equipment at the lower end, the pneumatic push-pull piece comprises a gas-driven telescopic pipe, the outer end of the gas-driven telescopic pipe is connected with an end plate in a sealed mode, and the outer end face of the end plate is provided with a gas nozzle communicated with the gas-driven telescopic pipe. The combustible gas alarm device is characterized in that an external air pump can inflate gas into gas-driven telescopic pipes or exhaust the gas, so that the gas-driven telescopic pipes can stretch out and draw back, a mounting frame is pushed and pulled under the combination of the gas-driven telescopic pipes on the two sides, the combustible gas alarm device can move left and right, meanwhile, a lead screw lifting mechanism can drive the combustible gas alarm device to move up and down, and the combustible gas alarm device can move up and down. And the combustible gas alarm equipment can stop and work at any position in a certain range through a combination effect.

Description

Technical Field

[0001] The utility model relates to the technical field of gas alarms, in particular to a movable combustible gas alarm. Background Technique

[0002] Combustible gas alarm devices are used to detect the leakage of combustible gases. When there is a leakage of combustible gas in an industrial environment and the combustible gas alarm device detects that the gas concentration reaches the explosion critical point, the combustible gas alarm device will emit an alarm signal to remind on-site staff to take safety measures and drive the exhaust, cut-off, and spraying systems to prevent explosion, fire, and poisoning accidents, thereby ensuring safe production.

[0003] Combustible gas alarm devices are usually installed at designated positions according to requirements for operation. Since they are usually fixedly installed somewhere, they can only monitor the combustible gas concentration in a small area at the location where they are located. When it is necessary to monitor the combustible gas at multiple locations of equipment or rooms, multiple combustible gas alarm devices usually need to be equipped. The equipping of multiple combustible gas alarm devices will not only cause a sharp increase in costs but also make the laying of transmission lines very troublesome. Therefore, in view of the above problems, a movable combustible gas alarm is proposed herein. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a movable combustible gas alarm. The gas alarm can, through the pushing and pulling action of a pneumatic pushing and pulling member, enable the combustible gas alarm device hung on the mounting rack to move left and right, and at the same time, the screw rod lifting mechanism can also drive the combustible gas alarm device to move up and down. Furthermore, through the combined action, the combustible gas alarm device can stay and work at any position within a certain range, can move the combustible gas alarm device to the designated position for work according to requirements, or make it move periodically to perform periodic detection on each detection point within the effective range, solving the technical problem in the prior art that since the combustible gas alarm is usually fixedly installed somewhere, it detects the combustible gas concentration at various places within a certain range.

[0005] The technical solution adopted by the embodiment of the present application to solve its technical problems is as follows:

[0006] A movable combustible gas alarm includes a rectangular tube, on the rear side of which there are provided a screw rod lifting mechanism and a guiding mechanism, a pneumatic pushing and pulling member which is arranged on both sides inside the rectangular tube, a mounting rack whose two ends are respectively fixedly connected to the pneumatic pushing and pulling members on both sides, and at the same time, a combustible gas alarm device is installed at its lower end; wherein, the pneumatic pushing and pulling member includes a pneumatically driven telescopic tube, the outer end of the pneumatically driven telescopic tube is hermetically connected with an end plate, an air nozzle communicated with the pneumatically driven telescopic tube is arranged on the outer end face of the end plate, the air nozzle is connected with an external air pump through a pipe, and the pneumatically driven telescopic tube expands and extends forward when inflated and contracts and retracts when exhausted.

[0007] With the above structural form, the external air pump can inflate or exhaust air into the air-driven telescopic tube, enabling it to expand and extend when inflated and contract and retract when exhausting air. Thus, under the combined action of the air-driven telescopic tubes on both sides, a pushing and pulling effect can be exerted on the mounting rack, enabling the combustible gas alarm device hung on the mounting rack to move left and right. At the same time, the screw rod lifting mechanism can also drive the combustible gas alarm device to move up and down. Therefore, through the combined action, the combustible gas alarm device can stay and work at any position within a certain range, can move the combustible gas alarm device to a specified position for work according to requirements, or make it move periodically to perform periodic detection on each detection point within the effective range.

[0008] In a possible implementation manner, the air-driven telescopic tube includes a plurality of rectangular frames, which are hermetically connected by an elastic outer membrane, and an elastic airbag membrane is attached to the inner wall of the elastic outer membrane.

[0009] With the above structural form, when the elastic airbag membrane is inflated, it will push the elastic outer membrane to expand outward, and then push the rectangular frames away from each other, causing the overall elongation of the air-driven telescopic tube. When the gas in the elastic airbag membrane is extracted, it will drive the elastic outer membrane to contract inward, and then pull the rectangular frames closer to each other, causing the overall shortening of the air-driven telescopic tube.

[0010] In a possible implementation manner, the rectangular frame is made of rigid plastic material, and its cross-sectional size matches the inner cross-sectional size of the rectangular tube.

[0011] With the above structural form, the rectangular frame can slide smoothly within the rectangular tube, making the overall telescoping of the air-driven telescopic tube smoother.

[0012] In a possible implementation manner, the mounting rack includes fixed patches fixedly adhered to the inner end faces of the air-driven telescopic tubes. A connecting cross beam is fixedly connected between the fixed patches. A suspension rod is fixedly arranged on the lower end face of the connecting cross beam, and the bottom end of the suspension rod is detachably connected to the combustible gas alarm device.

[0013] With the above structural form, the overall transmission connection between the mounting rack and the air-driven telescopic tube can be realized through the fixed patches, and at the same time, the suspension rod plays a role in hanging and installing the combustible gas alarm device.

[0014] In a possible implementation manner, a chute is provided in the middle of the lower end face of the rectangular tube, and the width of the chute is numerically greater than the thickness of the suspension rod.

[0015] With the above structural form, a necessary structural basis is provided for the smooth sliding of the suspension rod.

[0016] In a possible implementation, the screw rod lifting mechanism includes two symmetrically arranged drive motors, and the output shaft ends of both are fixedly connected with transmission screw rods. There are two sliding connection platforms, which are fixedly installed on the rear end face of the rectangular tube and are threadedly connected with the corresponding transmission screw rods.

[0017] With the above structural form, the drive motor can drive the transmission screw rod to rotate, thereby driving the sliding connection platform to move up and down, and realizing driving the rectangular tube to move up and down.

[0018] In a possible implementation, the drive motor is fixedly installed on the wall or the equipment. The bottom end of the transmission screw rod is rotatably connected with a screw rod mounting piece, and the screw rod mounting piece is fixedly installed on the wall or the equipment.

[0019] With the above structural form, it provides a necessary structural basis for the overall fixed installation of the screw rod lifting mechanism.

[0020] In a possible implementation, the guiding mechanism includes two sliding sleeves, which are symmetrically installed on the rear end face of the rectangular tube. A guiding rod is slidably inserted into the sliding sleeves, and both the upper and lower ends of the guiding rod are fixedly connected with guiding rod mounting pieces, and the guiding rod mounting pieces are fixedly installed on the wall or the equipment.

[0021] With the above structural form, with the combined action of the guiding rod and the sliding sleeves, it can ensure that the rectangular tube can move straight up and down during the up and down movement and fixation process.

[0022] In summary, the present utility model includes the following beneficial technical effects:

[0023] The external air pump can inflate or exhaust air into the air-driven telescopic tube, so that it can expand and extend when inflated and contract and retract when exhausting air. Furthermore, under the combined action of the air-driven telescopic tubes on both sides, it can push and pull the mounting rack, enabling the combustible gas alarm device hung on the mounting rack to move left and right. At the same time, the screw rod lifting mechanism can also drive the combustible gas alarm device to move up and down. Therefore, through the combined action, the combustible gas alarm device can stay and work at any position within a certain range, can move the combustible gas alarm device to a specified position for work according to requirements, or make it move periodically to perform periodic detection on each detection point within the effective range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0025] Figure 1 is the overall structural schematic diagram of the present utility model;

[0026] Figure 2 Schematic diagram of the internal structure of the present utility model;

[0027] Figure 3 Schematic diagram of the pneumatic push-pull member structure of the present utility model;

[0028] Figure 4 Schematic diagram of the structural composition of the pneumatically driven telescopic tube of the present utility model.

[0029] In the figure: 1, rectangular tube; 11, chute; 2, pneumatic push-pull member; 21, pneumatically driven telescopic tube; 22, end plate; 23, air nozzle; 201, rectangular frame; 202, elastic outer membrane; 203, elastic airbag membrane; 3, mounting bracket; 31, fixed patch; 32, connecting cross beam; 33, suspension rod; 4, combustible gas alarm device; 5, screw rod lifting mechanism; 51, driving motor; 52, sliding connection table; 53, transmission screw rod; 54, screw rod mounting piece; 6, guiding mechanism; 61, sliding sleeve; 62, guiding rod; 63, guiding rod mounting piece. Specific embodiments

[0030] The technical solutions in the embodiments of the present application are to solve the problems in the above-mentioned background technology, and the general idea is as follows:

[0031] As Figure 1 - Figure 3 shown, a movable combustible gas alarm provided in this embodiment includes a rectangular tube 1, on the rear side of which there are provided a screw rod lifting mechanism 5 and a guiding mechanism 6, a pneumatic push-pull member 2, which is arranged on both sides inside the rectangular tube 1, and a mounting bracket 3, the two ends of which are respectively fixedly connected to the pneumatic push-pull members 2 on both sides, and at the same time a combustible gas alarm device 4 is installed at its lower end. Among them, the combustible gas alarm device 4 can detect the concentration of combustible gas and give an alarm, and the screw rod lifting mechanism 5 can drive the combustible gas alarm device 4 to move up and down.

[0032] The pneumatic push-pull member 2 includes a pneumatically driven telescopic tube 21, the outer end of the pneumatically driven telescopic tube 21 is hermetically connected with an end plate 22, and an air nozzle 23 communicating with the pneumatically driven telescopic tube 21 is arranged on the outer end face of the end plate 22. The air nozzle 23 is connected to an external air pump through a pipe. When the pneumatically driven telescopic tube 21 is inflated, it expands and extends forward, and when it is exhausted, it contracts and retracts backward. Through the above structural form, the external air pump can inflate or exhaust air into the pneumatically driven telescopic tube 21, so that it can expand and extend forward when inflated and contract and retract backward when exhausted. Furthermore, under the combined action of the pneumatically driven telescopic tubes 21 on both sides, it can push and pull the mounting bracket 3, so that the combustible gas alarm device 4 hung on the mounting bracket 3 can move left and right.

[0033] Under the combined action of the two functions of lifting and horizontal translation, the combustible gas alarm device 4 can stay and work at any position within a certain range, can move the combustible gas alarm device 4 to a specified position for work according to requirements, or make it move periodically to perform periodic detection on each detection point within the effective range.

[0034] As Figure 4 shown, the air-driven telescopic tube 21 includes several rectangular frames 201. The rectangular frames 201 are hermetically connected by an elastic outer membrane 202. An elastic airbag membrane 203 is attached to the inner wall of the elastic outer membrane 202. In this structural form, when the elastic airbag membrane 203 is inflated, it will push the elastic outer membrane 202 to expand outward, and then push the rectangular frames 201 away from each other, making the overall length of the air-driven telescopic tube 21 increase. When the gas in the elastic airbag membrane 203 is pumped out, it will drive the elastic outer membrane 202 to contract inward, and then pull the rectangular frames 201 closer to each other, making the overall length of the air-driven telescopic tube 21 decrease.

[0035] Specifically, the rectangular frame 201 is made of rigid plastic, and its cross-sectional dimensions match the inner cross-sectional dimensions of the rectangular tube 1. In this structural form, the rectangular frame 201 can slide smoothly within the rectangular tube 1, making the overall telescoping of the air-driven telescopic tube 21 more smooth.

[0036] As Figure 3 shown, the mounting bracket 3 includes fixed patches 31 fixedly bonded to the inner end face of the air-driven telescopic tube 21. A connecting cross beam 32 is fixedly connected between the fixed patches 31. A suspension rod 33 is fixedly arranged on the lower end face of the connecting cross beam 32. The bottom end of the suspension rod 33 is detachably connected to the combustible gas alarm device 4. In this structural form, the overall transmission connection between the mounting bracket 3 and the air-driven telescopic tube 21 can be realized through the fixed patches 31, and at the same time, the suspension rod 33 plays a role in hanging and installing the combustible gas alarm device 4.

[0037] As Figure 2 shown, a chute 11 is provided in the middle of the lower end face of the rectangular tube 1. The width of the chute 11 is numerically greater than the thickness of the suspension rod 33. In this structural form, it provides a necessary structural basis for the smooth sliding of the suspension rod 33.

[0038] As Figure 1 shown, the screw rod lifting mechanism 5 includes two symmetrically arranged drive motors 51, and the output shaft ends of both are fixedly connected with transmission screw rods 53. Two sliding connection platforms 52 are fixedly installed on the rear end face of the rectangular tube 1 and are threadedly connected to the corresponding transmission screw rods 53. In this structural form, the drive motor 51 can drive the transmission screw rod 53 to rotate, thereby driving the sliding connection platform 52 to move up and down, realizing driving the rectangular tube 1 to move up and down.

[0039] In addition, the drive motor 51 is fixedly installed on a wall or a device. The bottom end of the transmission lead screw 53 is rotatably connected to a lead screw mounting plate 54, and the lead screw mounting plate 54 is fixedly installed on a wall or a device. Through the above structural form, a necessary structural basis is provided for the overall fixed installation of the lead screw lifting mechanism 5.

[0040] As Figure 1 shown, the guiding mechanism 6 includes two sliding sleeves 61, which are symmetrically installed on the rear end face of the rectangular tube 1, and a guiding rod 62, which is slidably inserted into the sliding sleeves 61, and both the upper and lower ends thereof are fixedly connected to a guide rod mounting plate 63, and the guide rod mounting plate 63 is fixedly installed on a wall or a device. Through the above structural form, with the combined action of the guiding rod 62 and the sliding sleeves 61, it can be ensured that the rectangular tube 1 can move straight up and down during the up-and-down movement and fixation process.

[0041] The working principle and process of the present utility model are as follows:

[0042] The external air pump can inflate or exhaust air into the air-driven telescopic tube 21, so that it can expand and extend when inflated and contract and retract when exhausted. Specifically, when the elastic airbag membrane 203 is inflated, it will push the elastic outer membrane 202 to expand outward, and then push the rectangular frames 201 away from each other, so that the overall length of the air-driven telescopic tube 21 increases. When the gas in the elastic airbag membrane 203 is pumped out, it will drive the elastic outer membrane 202 to contract inward, and then pull the rectangular frames 201 closer to each other, so that the overall length of the air-driven telescopic tube 21 decreases.

[0043] Under the combined action of the air-driven telescopic tubes 21 on both sides, the mounting frame 3 can be pushed and pulled, so that the combustible gas alarm device 4 hung on the mounting frame 3 can move left and right. At the same time, the lead screw lifting mechanism 5 can also drive the combustible gas alarm device 4 to move up and down. Thus, through the combined action, the combustible gas alarm device 4 can stay and work at any position within a certain range, can move the combustible gas alarm device 4 to a specified position for work according to requirements, or make it move periodically to perform periodic detection on each detection point within the effective range.

[0044] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present utility model, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A movable combustible gas alarm, characterized in that: include: A rectangular tube (1) is provided with a screw lifting mechanism (5) and a guide mechanism (6) on its rear side; Pneumatic push-pull members (2) are arranged on both sides of the rectangular tube (1); The mounting frame (3) has two ends fixedly connected to the pneumatic push-pull members (2) on both sides, and a combustible gas alarm device (4) is installed at the lower end; The pneumatic push-pull member (2) comprises an air-driven telescopic tube (21), the outer end of the air-driven telescopic tube (21) is sealedly connected to an end plate (22), the outer end surface of the end plate (22) is provided with an air nozzle (23) connected to the air-driven telescopic tube (21), the air nozzle (23) is connected to an external air pump through a tube, and the air-driven telescopic tube (21) expands and extends forward when inflated, and contracts and retreats when deflated.

2. The movable combustible gas alarm according to claim 1, characterized in that: The air-driven telescopic tube (21) comprises a plurality of rectangular frames (201), the rectangular frames (201) are hermetically connected via an elastic outer membrane (202), and an elastic airbag membrane (203) is attached to the inner wall of the elastic outer membrane (202).

3. The movable combustible gas alarm according to claim 2 is characterized in that: The rectangular frame (201) is made of hard plastic material, and its cross-sectional dimensions are consistent with the inner cross-sectional dimensions of the rectangular tube (1).

4. The movable combustible gas alarm according to claim 2, characterized in that: The mounting frame (3) comprises a fixing patch (31) fixedly bonded to the inner end surface of the gas-driven telescopic tube (21), a connecting crossbeam (32) being fixedly connected between the fixing patches (31), a hanging rod (33) being fixedly provided on the lower end surface of the connecting crossbeam (32), and the bottom end of the hanging rod (33) being detachably connected to the combustible gas alarm device (4).

5. The movable combustible gas alarm according to claim 4, characterized in that: The lower end surface of the rectangular tube (1) is provided with a centrally arranged slide groove (11), and the width of the slide groove (11) is numerically greater than the thickness of the suspension rod (33).

6. The movable combustible gas alarm according to claim 1, characterized in that: The screw rod lifting mechanism (5) comprises: Two symmetrically arranged drive motors (51), and the output shaft ends of both motors are fixedly connected with a transmission screw (53); Two sliding connection platforms (52) are fixedly mounted on the rear end surface of the rectangular tube (1) and are threadedly connected to corresponding transmission screw rods (53).

7. The movable combustible gas alarm according to claim 6, characterized in that: The driving motor (51) is fixedly mounted on a wall or a device, the bottom end of the transmission screw (53) is rotatably connected to a screw mounting plate (54), and the screw mounting plate (54) is fixedly mounted on a wall or a device.

8. The movable combustible gas alarm according to claim 1, characterized in that: The guiding mechanism (6) comprises: Two sliding sleeves (61) are symmetrically mounted on the rear end surface of the rectangular tube (1); The guide rod (62) is slidably inserted into the sliding sleeve (61), and the upper and lower ends of the guide rod are fixedly connected with guide rod mounting pieces (63), and the guide rod mounting pieces (63) are fixedly mounted on a wall or equipment.

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