Confined space layered monitoring execution device

Abstract

This utility model relates to the field of confined space environment safety monitoring technology, and provides a confined space layered monitoring execution device, including a housing with an internal accommodating space; a drive mechanism, a transmission mechanism, and a cable reel, all located within the accommodating space, with the cable reel rotatably mounted; the transmission mechanism connects the drive mechanism and the cable reel, and a cable is wound around the outer periphery of the cable reel; the end of the cable passes through the bottom side of the housing, and the end of the cable is connected to a gas detection device. The confined space layered monitoring execution device provided by this utility model, by utilizing the drive mechanism to precisely control the upward and downward displacement and operating speed of the cable, can achieve real-time monitoring of harmful factors in the working environment at different heights within a confined space, and has the characteristics of high practicality and high efficiency.

Description

Technical Field

[0001] This utility model relates to the field of confined space environment safety monitoring technology, and in particular to a confined space layered monitoring execution device. Background Technology

[0002] Confined spaces are generally characterized by limited space, relative isolation from the outside world, restricted or inconvenient access, and poor ventilation, which can easily lead to the accumulation of toxic, harmful, flammable, and explosive substances or insufficient oxygen content. In recent years, analysis of numerous confined space work accidents has revealed that poisoning from toxic and harmful gases and asphyxiation due to oxygen deficiency account for as high as 77.2% of personal injury and death. The complex environment within confined spaces, with varying densities of different harmful gases, can easily cause them to accumulate at different elevations within the space, endangering the life, health, and safety of workers.

[0003] In the existing technology, the existing environmental safety monitoring equipment has a relatively simple movement mode in confined spaces, which cannot achieve comprehensive monitoring of working environments at different floor heights, has monitoring blind spots, and is difficult to meet the environmental monitoring needs of personnel entering and leaving confined spaces and working in confined spaces for a long time. Utility Model Content

[0004] This invention provides a confined space layered monitoring execution device to solve the shortcomings of existing technologies that cannot comprehensively monitor working environments at different floor heights, and to realize a confined space layered monitoring execution device that can be precisely controlled.

[0005] This utility model provides a confined space layered monitoring execution device for moving a gas detection device, comprising:

[0006] The container has internal storage space;

[0007] The drive mechanism, transmission mechanism, and reel are all located in the receiving space, and the reel is rotatably mounted; the transmission mechanism is used to connect the drive mechanism and the reel, and a cable is wound around the outer periphery of the reel; the end of the cable passes through the bottom side of the housing, and the end of the cable is connected to a gas detection device.

[0008] According to the confined space layered monitoring execution device provided by this utility model, it further includes:

[0009] A limiting mechanism is connected to the cable, and the limiting mechanism is used to control the distance between the end of the cable and the housing;

[0010] The controller is electrically connected to both the limiting mechanism and the driving mechanism, and is used to control the start and stop of the driving mechanism.

[0011] According to the present invention, a confined space layered monitoring and execution device is provided, wherein the limiting mechanism includes:

[0012] A limiting plate is sleeved on the outer periphery of the cable, and the limiting plate is located on the outside of the housing;

[0013] A limit switch is provided on the side of the housing facing the limit plate; and the limit switch is electrically connected to the controller.

[0014] According to the confined space layered monitoring execution device provided by this utility model, a through hole is provided in the middle of the limiting disk, and the limiting mechanism further includes:

[0015] The buffer cylinder is hollow inside and connected to the bottom of the limiting plate; and the buffer cylinder has an elastic element inside.

[0016] The buffer post has its bottom end abutting against the elastic element, and the buffer post passes through the through hole and is slidably disposed inside the buffer cylinder;

[0017] Both the buffer cylinder and the buffer column are connected to the cable, and the end of the cable is located on the bottom outside of the buffer cylinder.

[0018] According to the confined space layered monitoring execution device provided by this utility model, mounting columns are horizontally installed on opposite sides of the inner side of the housing, and the two ends of the rotating shaft of the winding reel are rotatably connected to the mounting columns.

[0019] According to the present invention, a confined space layered monitoring execution device is provided, wherein a hanging ring is provided on the top of the box, and the hanging ring is used to suspend the box at a designated position.

[0020] According to the present invention, a confined space layered monitoring execution device further includes a motor mounting bracket disposed on the inner side of the housing, and the motor mounting bracket is provided with an elongated hole, and the drive mechanism can be selectively installed at any position of the elongated hole.

[0021] The confined space layered monitoring and execution device provided by this utility model further includes: a power cord connected to the drive mechanism.

[0022] According to the present invention, a confined space layered monitoring execution device is provided, the housing comprising:

[0023] A housing, open at one end, and having the receiving space inside the housing;

[0024] The cover is detachably connected to the opening of the housing.

[0025] According to the present invention, a confined space layered monitoring execution device is provided, wherein a square hole is provided on the bottom side of the housing, and the limiting plate is a disc.

[0026] The confined space layered monitoring execution device provided by this utility model has an internal space for housing, in which the drive mechanism, transmission mechanism and cable reel are all located. The cable reel is rotatable and has a cable wound around its outer circumference. The end of the cable passes through the bottom side of the housing and is connected to a gas detection device. The drive mechanism precisely controls the upward and downward displacement and running speed of the cable, enabling real-time monitoring of harmful factors in the working environment at different heights within the confined space. It has the characteristics of strong practicality and high efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the confined space layered monitoring execution device provided by this utility model.

[0029] Figure 2 This is a schematic diagram of the appearance of the confined space layered monitoring execution device provided by this utility model.

[0030] Figure 3 This is a cross-sectional view of the limiting mechanism in the confined space layered monitoring execution device provided by this utility model.

[0031] Figure label:

[0032] 100. Cable; 1. Housing; 11. Shell; 12. Cover; 2. Drive mechanism; 3. Transmission mechanism; 4. Reel; 5. Limiting mechanism; 51. Limiting disc; 52. Limiting switch; 53. Buffer cylinder; 54. Elastic element; 55. Buffer post; 6. Mounting post; 7. Hanging ring; 8. Motor mounting bracket; 9. Long hole; 10. Power cord. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] The following is combined Figures 1-3 The confined space layered monitoring execution device of this utility model includes a housing 1, a drive mechanism 2, a transmission mechanism 3, and a winding reel 4.

[0035] The housing 1 provides a storage space to protect internal components from external environmental interference. The drive mechanism 2, transmission mechanism 3, and cable reel 4 are all located within this storage space, forming a compact structure that facilitates secure mounting outside the confined space. The drive mechanism 2, the power source for the actuator, is installed within the storage space of the housing 1. Its output end connects to the transmission mechanism 3, providing the power required for the rotation of the cable reel 4. The transmission mechanism 3 connects the drive mechanism 2 and the cable reel 4. Its function is to transmit the power from the drive mechanism 2 to the cable reel 4, and it can adjust the speed or torque through gear meshing, belt drive, etc., ensuring that the rotational speed of the cable reel 4 matches the driving force. The cable reel 4 is rotatable, and cable 100 is wound around its outer circumference. Driven by the transmission mechanism 3, the cable reel 4 can rotate forward or backward, thereby controlling the length of cable 100 released.

[0036] The end of cable 100 passes through the bottom side of enclosure 1, and a gas detection device is connected to the end of cable 100. It should be noted that one end of cable 100 is fixed and wound around reel 4, while the other end passes through the bottom side of enclosure 1 and extends to the outside of enclosure 1. The gas detection device is used to monitor parameters such as gas composition, concentration, and oxygen content within the confined space.

[0037] The confined space layered monitoring execution device provided by this utility model drives the transmission mechanism 3 through the drive mechanism 2, which in turn drives the reel 4 to rotate. This allows for precise control of the length of the cable 100 released. When the reel 4 rotates clockwise, the cable 100 is gradually released, causing the gas detection device at its end to descend along the height of the confined space, enabling monitoring of gas parameters at different depths. When the reel 4 rotates counterclockwise, the cable 100 is retracted, and the gas detection device rises, allowing it to be reset to its initial position or adjusted to another monitoring layer.

[0038] like Figure 1 and Figure 2As shown, in a feasible embodiment of this utility model, it further includes a limiting mechanism 5 and a controller. The limiting mechanism 5 is connected to the cable 100 and is used to control the distance between the end of the cable 100 and the housing 1. The controller is electrically connected to both the limiting mechanism 5 and the drive mechanism 2, and is used to control the start and stop of the drive mechanism 2. For example, the limiting mechanism 5 can accurately obtain the extended length of the cable 100 through an encoder, displacement sensor, or scale recognition component, thereby determining the current depth of the gas detection device in the confined space.

[0039] The central processing unit (CPU) is responsible for the logic operations, input and output commands of the entire hierarchical monitoring and execution device. The human-machine interface (HMI) and the CPU communicate in real time via RS485 data. The CPU outputs pulse commands to the controller, which drives the drive mechanism to perform actions such as forward and reverse rotation, hovering, acceleration and deceleration according to the commands. At the same time, the vector pulses of the drive mechanism are fed back to the high-speed counter of the CPU. The CPU processes the high-speed counter data, performs data operations and unit conversions, and displays the results on the HMI.

[0040] The human-machine interface (HMI) uses a programmable central processing unit (CPU) to convert the input parameters into periodic high-frequency pulse signals required by the traction motor. The frequency of the high-frequency pulses corresponds to the motor's rotational speed; the number of pulses corresponds to the rotation angle (number of revolutions). The CPU outputs high-frequency pulses of different directions, frequencies, and periods to achieve actions such as forward and reverse rotation, hovering, acceleration, and deceleration of the stepper motor. The HMI can input programming data and action commands into the CPU, while also reading the CPU's operational data results. The HMI is password-protected to prevent accidental operation that could cause equipment malfunction.

[0041] It should be noted that the central processing unit and human-machine interface, and other control-related aspects, are existing technologies and are not the focus of this utility model.

[0042] In one feasible embodiment of this utility model, the limiting mechanism 5 includes a limiting plate 51 and a limiting switch 52. The limiting plate 51 is sleeved on the outer periphery of the cable 100, and the limiting plate 51 is fixed relative to the cable and moves synchronously with the cable 100. The limiting plate 51 is located on the outside of the housing; the limiting switch 52 is located on the side of the housing 1 facing the limiting plate 51; and the limiting switch 52 is electrically connected to the controller through a wire, which can transmit a trigger signal to the controller.

[0043] In the above embodiments, the limit plate 51 and the limit switch 52 cooperate, and the moving distance of the limit plate 51 directly corresponds to the length of the cable 100. By adjusting the trigger position of the limit plate 51, it can flexibly adapt to the monitoring requirements of different layer depths. In addition, the limit switch 52 can also be used as an upper limit node switch. When the pulled gas detection equipment reaches the upper limit, the limit mechanism 5 is activated, the limit switch 52 is triggered, the central processing unit sends a stop signal, and the drive mechanism 2 stops rotating.

[0044] In addition, an emergency stop switch can be installed to ensure that the equipment can be stopped in time under abnormal conditions, avoid equipment failure caused by human error, and ensure the safety of operators.

[0045] like Figure 3 As shown, in a feasible embodiment of this utility model, a through hole is provided in the middle of the limiting plate 51. The limiting mechanism 5 also includes a buffer cylinder 53, an elastic element 54, and a buffer column 55. The buffer cylinder 53 is a hollow cylindrical structure with its top end connected to the bottom of the limiting plate 51 and moves synchronously with the limiting plate 51. The elastic element 54 is placed inside the buffer cylinder 53; the bottom end of the buffer column 55 abuts against the elastic element 54, and the buffer column 55 passes through the through hole and is slidably disposed on the inner side of the buffer cylinder 53, that is, the buffer column 55 can slide up and down along the axial direction of the buffer cylinder 53. Both the buffer cylinder 53 and the buffer column 55 are connected to the cable 100, and the end of the cable 100 is located on the outer side of the bottom of the buffer cylinder 53. The core function of the buffer cylinder 53, the elastic element 54, and the buffer column 55 is to absorb the instantaneous impact force when the cable 100 is lowered or retracted, and to avoid damage to the cable 100, the gas detection equipment, or the limiting mechanism 5 caused by rigid pulling.

[0046] When the drive mechanism 2 releases the cable 100, and the gas detection device falls downwards due to its own weight, the cable 100 will be subjected to instantaneous tension. At this time, under the action of the gravity of the gas detection device, the buffer column 55 slides downwards along the inner wall of the buffer cylinder 53, compressing the internal elastic element 54. The deformation of the elastic element 54 will absorb part of the impact force, transforming the rigid tension into elastic buffering, reducing the instantaneous tension of the cable 100, and at the same time preventing the gas detection device from affecting the monitoring accuracy due to violent shaking.

[0047] The buffering effect of the elastic element 54 can effectively offset the impact of the gas detection equipment's own weight when it is lowered, the inertial impact when the drive mechanism 2 stops suddenly, and the pulling impact when it is retrieved, thus preventing the cable 100 from breaking due to frequent stress or the gas detection equipment from being damaged by severe vibration.

[0048] When the limit mechanism 5 is working, the limit plate 51 and the limit switch 52 are responsible for accurately triggering the limit signal, while the buffer cylinder 53, the elastic element 54 and the buffer column 55 are responsible for buffering the impact during the process. The combination of the two enables the limit mechanism 5 to have both the accuracy of depth control and the stability to cope with dynamic loads. It is especially suitable for scenarios where gas detection equipment moves up and down frequently in confined spaces, further improving the reliability and safety of the monitoring and execution device.

[0049] Among them, the elastic element 54 is usually a compression spring or elastic rubber, etc.

[0050] In one feasible embodiment of this utility model, mounting posts 6 are horizontally installed on opposite sides of the inner side of the housing 1, and the two ends of the rotating shaft of the cable reel 4 are rotatably connected to the mounting posts 6. Bearings are typically provided between the mounting posts 6 and the rotating shaft of the cable reel 4, i.e., the bearings are located inside the housing 1. When the drive mechanism 2 drives the cable reel 4 to rotate through the transmission mechanism 3, the cable reel 4 rotates stably around the axis of the rotating shaft, and the cable 100 is evenly wound and unwound around the outer circumference of the cable reel 4. At this time, the mounting posts 6 not only provide mechanical support for the cable reel 4, but also reduce rotational resistance through bearings and other components, ensuring that the gas detection equipment can smoothly and accurately reach the preset detection depth, making the layered monitoring operation of the entire actuator in a confined space more reliable and efficient.

[0051] In one feasible embodiment of this utility model, a hanging ring 7 is provided on the top of the housing 1, which is used to suspend the housing 1 at a designated position. The hanging ring 7 is usually a closed ring structure, fixed to the center position or symmetrical position of the top of the housing 1, and firmly connected to the top of the housing 1 by welding, bolts or other means to ensure that its load-bearing capacity matches the weight of the entire actuator.

[0052] In one feasible embodiment of this utility model, a motor mounting bracket 8 is further included, disposed inside the housing 1. The motor mounting bracket 8 is typically made of metal sheet or profile and has sufficient rigidity to support the weight of the drive mechanism 2 and the vibration load during operation. The motor mounting bracket 8 has an elongated hole 9, and the drive mechanism 2 can be installed at any position within the elongated hole 9. The drive mechanism can be connected to the motor mounting bracket 8 via bolts or fasteners passing through the elongated hole 9. Because the elongated hole 9 is elongated, the bolts can slide freely along the length of the hole and be fixed at any position, thereby achieving position adjustment of the drive mechanism 2 on the motor mounting bracket 8. Furthermore, the length of the elongated hole 9 should be less than the length of the reel 4 so that the cable 100 can always be wound onto the reel 4. When the transmission mechanism 3 uses a belt, chain, or gear drive, the position change of the drive mechanism 2 can change the distance between the driving wheel and the driven wheel, thereby adjusting the transmission ratio to adapt to different cable winding and unwinding speed requirements. Simultaneously, it can also achieve tensioning of the transmission mechanism 3.

[0053] Among them, the drive mechanism 2 can be an explosion-proof brushless stepper motor that will not generate electric sparks. The maximum voltage during operation is only 24VDC. The enclosed shell can prevent external dust from entering, thus improving the motor's service life and safety.

[0054] In one feasible embodiment of this utility model, the power cord 10 is connected to the drive mechanism 2. One end of the power cord 10 is connected to the power input terminal of the drive mechanism 2 through a waterproof connector or terminal block to ensure reliable electrical connection and to have an anti-loosening design. The other end of the power cord 10 passes through the inside of the housing 1. A cable outlet hole is opened on the side wall or top of the housing 1, and a waterproof connector is installed in the hole. The power cord 10 passes through the connector and is pressed tightly by a sealing ring to prevent external moisture and dust from entering the inside of the housing 1.

[0055] In one feasible embodiment of this utility model, the housing 1 includes a shell 11 and a cover 12. One end of the shell 11 is open, and the shell 11 has an internal space for installing core components such as the drive mechanism 2, the transmission mechanism 3, and the winding reel 4. The edge of the open end of the shell 11 is usually provided with a flange or a flanging mechanism for docking with the cover 12. The cover 12 is detachably connected to the opening of the shell 11. The cover 12 is usually flat or has a curved surface structure that matches the opening of the shell 11. It is connected to the open end of the shell 11 by bolts, snaps, or other means to form a complete closed space.

[0056] In one feasible embodiment of this utility model, a square hole is provided on the bottom side of the housing 11, and the limiting disk 51 is a disc. In this embodiment, both the smooth passage of the cable 100 and the effective guidance of the limiting disk 51 are ensured.

[0057] In summary, the confined space layered monitoring execution device provided by this utility model can accurately control the layered monitoring of gas detection equipment in confined spaces. The cable winding and unwinding are achieved through a drive, transmission, and reel structure. The limiting mechanism ensures accurate detection depth, the buffer structure reduces impact to protect the equipment, the stable installation and suspension structure ensures stable operation, and the modular housing and adjustable components facilitate installation, maintenance, and functional expansion. Overall, it improves the accuracy, automation, safety, and applicability of monitoring and can efficiently meet the monitoring needs of different confined spaces.

[0058] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A confined space layered monitoring execution device for moving a gas detection apparatus, characterized in that, include: The box (1) has internal storage space; The drive mechanism (2), transmission mechanism (3) and winding reel (4) are all located in the accommodating space. The transmission mechanism (3) is used to connect the drive mechanism (2) and the winding reel (4). The winding reel (4) is rotatably arranged, and a cable (100) is wound around the outer periphery of the winding reel (4). The end of the cable (100) passes through the bottom side of the housing (1), and the end of the cable (100) is connected to a gas detection device.

2. The confined space layered monitoring and execution device according to claim 1, characterized in that, Also includes: A limiting mechanism (5) is connected to the cable (100), and the limiting mechanism (5) is used to control the distance between the end of the cable (100) and the housing (1); The controller is electrically connected to both the limiting mechanism (5) and the driving mechanism (2), and is used to control the start and stop of the driving mechanism.

3. The confined space layered monitoring execution device according to claim 2, characterized in that, The limiting mechanism (5) includes: A limiting plate (51) is sleeved on the outer periphery of the cable (100), and the limiting plate (51) is located on the outside of the housing (1); A limit switch (52) is provided on the side of the housing (1) facing the limit plate (51); and the limit switch (52) is electrically connected to the controller.

4. The confined space layered monitoring execution device according to claim 3, characterized in that, The limiting plate (51) has a through hole in the middle, and the limiting mechanism (5) further includes: The buffer cylinder (53) is hollow inside and connected to the bottom of the limiting plate (51); and the buffer cylinder (53) has an elastic element (54) inside. The bottom end of the buffer column (55) abuts against the elastic element (54), and the buffer column (55) passes through the through hole and is slidably disposed on the inner side of the buffer cylinder (53); Both the buffer cylinder (53) and the buffer column (55) are connected to the cable (100), and the end of the cable (100) is located on the bottom outside of the buffer cylinder (53).

5. The confined space layered monitoring and execution device according to claim 4, characterized in that, Mounting posts (6) are horizontally installed on opposite sides of the inner side of the housing (1), and the two ends of the rotating shaft of the winding reel (4) are rotatably connected to the mounting posts (6).

6. The confined space layered monitoring execution device according to claim 5, characterized in that, The top of the box (1) is provided with a hanging ring (7), which is used to suspend the box (1) at a designated position.

7. The confined space layered monitoring and execution device according to claim 5, characterized in that, It also includes a motor mounting bracket (8), which is located inside the housing (1), and the motor mounting bracket (8) is provided with an elongated hole (9), and the drive mechanism (2) can be installed at any position of the elongated hole (9).

8. The confined space layered monitoring execution device according to claim 5, characterized in that, Also includes: The power cord (10) is connected to the drive mechanism (2).

9. The confined space layered monitoring execution device according to claim 5, characterized in that, The housing (1) includes: The housing (11) has an opening at one end and the housing (11) has the receiving space inside; The cover (12) is detachably connected to the opening of the housing (11).

10. The confined space layered monitoring execution device according to claim 9, characterized in that, The bottom side of the housing (11) has a square hole, and the limiting plate (51) is a disc.

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