A portable pipeline work safety device

Abstract

The utility model discloses a portable pipeline operation safety device relates to pipeline operation technical field, aims at solving the problem of traditional pipeline operation in manhole cover opening laborsaving, tool dispersion, gas detection inconvenience and big security risk. It includes push trolley, pull hook, pull assembly and pump suction type gas detector, push trolley is used for moving device and shift manhole cover, is equipped with handle, open end, storage box and hanging rod, and convenient operation and component storage, pull hook detachable symmetry is equipped with manhole cover, is fixed through the intercalation block and lock nut A, and is equipped with the hole for the suction tube to pass through, pull assembly contains lifting cylinder, lifting frame, cross bar and guide rod, can automatically lift manhole cover, and the cross bar end is equipped with lock nut B and prevents pull hook from separating, and pump suction type gas detector is equipped with push trolley positioning box, and the suction tube passes through pull hook hole channel and detects pipeline gas. The device is high in integration degree, convenient to operate, can improve operation efficiency and safety, and is suitable for various pipeline operation scenes.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline operation technology, specifically relating to a portable pipeline operation safety device. Background Technology

[0002] In municipal pipeline maintenance and repair work, opening manhole covers and detecting gases inside the pipeline are crucial steps in the preliminary preparation stage. In traditional pipeline operations, workers typically need to manually open manhole covers using simple tools such as crowbars and chains. This not only requires multiple people to work together and consumes a lot of physical strength, but also easily leads to damage to the manhole cover or strain on the workers' backs and hands due to improper operation. At the same time, there may be toxic, flammable, and explosive gases such as methane and hydrogen sulfide inside the pipeline. If work is carried out without accurate detection beforehand, it is very easy to cause safety accidents such as poisoning and explosions, posing a serious threat to the lives of workers.

[0003] The gas detection equipment currently used in pipeline operations is mostly independent portable instruments. During detection, workers need to carry them to the wellhead separately and then manually insert the detection probe or pipe into the pipeline. The operation process is cumbersome, and the detection position is easily affected by manual operation, making it difficult to guarantee the accuracy of the detection data. In addition, the independent detection equipment and the manhole cover opening tools are stored and transported separately, which not only increases the carrying burden of workers, but also makes it easy for tools to be missed or lost, prolonging the preparation time before the operation and reducing the overall operation efficiency.

[0004] Existing manhole cover opening tools lack stable connection and limiting structures. During the process of lifting the manhole cover, the connection between the tool and the manhole cover is prone to loosening or detachment, causing the manhole cover to tilt or slip off. This may not only damage the manhole cover or well opening facilities, but also pose a safety hazard of injuring workers. At the same time, the opened manhole cover usually needs to be manually carried to a location away from the well opening. The carrying process also involves a lot of physical exertion and inconvenience. Furthermore, the random placement of manhole covers can occupy working space, affect subsequent pipeline construction, or cause safety accidents due to accidental contact by unauthorized personnel. Utility Model Content

[0005] The present invention aims to solve the technical problems in the prior art, such as the need for manual and laborious operation to open manhole covers during pipeline operations, the lack of stable limiting and potential safety hazards, the cumbersome and inefficient operation caused by the separation of gas detection equipment and manhole cover opening tools, and the inability to accurately detect harmful gases in pipelines in advance to ensure operational safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A portable pipeline work safety device, comprising:

[0008] A trolley is used to move manhole covers to or transfer manhole covers from pipelines.

[0009] Two hooks are provided and can be detachably and symmetrically installed on the manhole cover;

[0010] The lifting assembly uses a lifting cylinder to move the crossbar up and down, thereby inserting the crossbar into the hook groove of the hook, or lifting the hook and manhole cover upwards by lifting the crossbar to open the manhole cover;

[0011] A pump-type gas detector uses a suction tube that extends into a pipe after passing through a hook to extract and detect the gas inside the pipe.

[0012] This portable pipeline operation safety device enables movement and manhole cover transfer via a trolley, connection of manhole covers via hooks, automatic opening of manhole covers via a lifting component, and advance detection of gas inside the pipeline by a pump-type gas detector. Overall, it balances operational safety, convenience, and efficiency, significantly reducing labor costs and safety risks.

[0013] Preferably, the bottom of the hook is integrally formed with an insert block that matches the opening hole on the manhole cover, and the hook is threaded with a locking nut A that locks the hook and the insert block onto the manhole cover.

[0014] After the insert block passes through the opening hole and extends under the manhole cover, it rotates 90° to offset the opening hole. Then, the locking nut A is rotated to press against the upper surface of the manhole cover, thereby locking the hook and the insert block onto the manhole cover. The hook is fixed by the rotation and offset of the insert block through the hole and the locking nut A. This allows the hook to be quickly and securely installed on the manhole cover, preventing it from falling off when the manhole cover is lifted.

[0015] Preferably, the hook has a hollow structure, and the vertical part of the hook and the insertion block are provided with a channel for the suction tube to pass through vertically. The suction tube can be accurately inserted into the pipe without additional drilling or adjustment, which improves the convenience and accuracy of gas detection.

[0016] As a preferred option, two pump-suction gas detectors are provided, each installed in a positioning box on the top of the trolley. The installation of the two pump-suction gas detectors in the positioning box of the trolley not only achieves integrated storage of the detection equipment, but also protects the detectors and prevents them from being damaged during movement.

[0017] As a preferred option, the trolley is equipped with a handle, and the end of the trolley opposite the handle is designed as an open structure. The handle makes it easy to push the trolley, and the open end makes it easy to move the manhole cover, thus improving the ease of operation of the device and the efficiency of manhole cover transfer.

[0018] As a preferred option, storage boxes are fixed to both sides of the bottom of the trolley to store the suction tube. The storage boxes at the bottom of the trolley can store the suction tube, preventing damage caused by messy placement of the tube and keeping the device tidy.

[0019] As a preferred option, the trolley is equipped with a fixed hanging rod for attaching and positioning the hook. The hanging rod on the trolley can be used to attach the hook, making it convenient to store and retrieve the hook, avoiding loss or damage to the hook, and reducing preparation time for operation.

[0020] Preferably, the lifting assembly also includes a lifting frame, with a crossbar fixed to the bottom of the lifting frame, a lifting cylinder fixed to the top of the trolley, and the piston rod of the lifting cylinder passing through the trolley and fixedly connected to the lifting frame;

[0021] The lifting cylinder drives the lifting frame to rise and fall, which in turn drives the crossbar to rise and fall. The lifting assembly drives the lifting frame through the lifting cylinder, which in turn drives the crossbar to rise and fall, realizing the automated movement of the crossbar and providing stable power for lifting the manhole cover.

[0022] Preferably, the bottom of the trolley is fixed with two symmetrically arranged guide rods that work in conjunction with the lifting frame to guide its lifting motion. The guide rods at the bottom of the trolley can guide the lifting frame to lift smoothly, prevent the lifting frame from deviating, and ensure that the crossbars are accurately matched with the hooks.

[0023] Preferably, the two ends of the crossbar are threaded with locking nuts B to limit the outer end face of the hook. The locking nuts B at both ends of the crossbar can limit the hook and prevent the hook from separating from the crossbar when the manhole cover is lifted, thereby improving structural stability and operational safety.

[0024] Compared with the prior art, the technical effects and advantages of this utility model are:

[0025] (1) This utility model effectively solves the problem of cumbersome and laborious operation of traditional manhole cover opening. The lifting cylinder of the lifting component drives the crossbar to automatically lift and pull the manhole cover, eliminating the need for manual lifting with simple tools, greatly reducing the physical exertion of workers. At the same time, the dual limit design of the crossbar and the hook avoids the risk of the manhole cover tilting and slipping due to the components detaching during the lifting process, which not only protects the manhole cover and the manhole opening facilities, but also eliminates the risk of injury to personnel, significantly improving the safety and convenience of manhole cover opening.

[0026] (2) This utility model realizes equipment integration and functional synergy, and improves the disadvantages of the scattered tools in the prior art. The trolley, as the core of the load-bearing system, integrates the lifting component, the pump-suction gas detector, the storage box and the hanging rod, etc., eliminating the need to separately carry scattered tools and reducing the carrying burden; moreover, the gas detection and manhole cover opening process are coordinated through the controller, and the detector can be accurately inserted into the pipeline for detection with the help of the hook channel without additional adjustment, which not only ensures the accuracy of the detection data, but also shortens the preparation time for operation and improves the overall operation efficiency.

[0027] (3) This utility model further enhances the safety guarantee of pipeline operations. Compared with the existing independent detection equipment, which is cumbersome to operate and easily interfered with, the pump-suction gas detector of this device is linked with the controller, which can provide real-time feedback of gas data and alarm when there is an abnormality, and detect the risk of harmful gases in advance; at the same time, the trolley has a convenient function of transferring the manhole cover after it is opened, which avoids the manhole cover occupying the working space or causing accidents due to accidental contact. From pre-operation detection to in-operation assistance, it comprehensively guarantees the safe operation of pipeline operations. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This utility model Figure 1 A schematic diagram of the structure after the manhole cover has been removed;

[0030] Figure 3 This utility model Figure 2 A schematic diagram of the structure after the middle hook has been removed;

[0031] Figure 4 This is a schematic diagram of the structure of the manhole cover of this utility model;

[0032] Figure 5 This is a first-view view of the hook locking and fixing of this utility model onto the manhole cover;

[0033] Figure 6 This is a second-view view of the hook locking and fixing of this utility model onto the manhole cover;

[0034] Figure 7 This is a schematic diagram of the structure of the hook of this utility model.

[0035] In the diagram: 1. Trolley; 2. Manhole cover; 21. Opening hole; 3. Hook; 31. Insertion block; 32. Locking nut A; 33. Hook groove; 34. Channel; 4. Lifting cylinder; 5. Crossbar; 6. Positioning box; 7. Pump-type gas detector; 8. Suction pipe; 9. Handle; 10. Storage box; 11. Hanging rod; 12. Lifting frame; 13. Guide rod; 14. Locking nut B; 15. Mounting box; 16. Controller. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] The following combination Figures 1 to 7This application will be described in further detail.

[0038] This application discloses a portable pipeline operation safety device, including a trolley 1, a hook 3, a lifting assembly, and a pump-type gas detector 7. The trolley 1 is used to move to the manhole cover 2 of the pipeline or to transfer the manhole cover 2 on the pipeline. The hook 3 is provided in two detachable and symmetrically installed on the manhole cover 2. The lifting assembly drives the crossbar 5 to move up and down through the lifting cylinder 4 on it, thereby inserting the crossbar 5 into the hook groove 33 of the hook 3, or lifting the hook 3 and the manhole cover 2 upward by lifting the crossbar 5 to open the manhole cover 2.

[0039] The suction tube 8 on the pump-type gas detector 7 passes through the hook 3 and extends into the pipe to suction and detect the gas in the pipe.

[0040] This portable pipeline operation safety device is an integrated device designed specifically for pipeline operation scenarios. Its core functions revolve around the safe operation of the pipeline manhole cover 2 and the detection of gas inside the pipeline. Through the collaborative work of multiple components, it effectively improves the safety, convenience and efficiency of the preparation stage before pipeline operation, laying a safe foundation for subsequent pipeline operations.

[0041] The trolley 1 is the core of the device for movement and carrying. Its main functions are twofold: first, it can be pushed by workers to move the entire device to the manhole cover 2 where the work needs to be done, without having to move the components separately; second, after the manhole cover 2 is opened, it can carry the manhole cover 2 and move it to a location away from the manhole opening to avoid the manhole cover 2 interfering with the work space.

[0042] The hook 3 is a key component connecting the manhole cover 2 and the lifting assembly. There are two hooks, and they are designed to be detachable and can be installed symmetrically on the manhole cover 2. This symmetrical installation method ensures that the manhole cover 2 is pulled evenly, preventing it from tilting or slipping due to unbalanced force. The detachable design also makes it easy to store or maintain the hook 3 separately when not in use.

[0043] The connection and fixation between the hook 3 and the manhole cover 2 is achieved through a specific structure: the bottom of the hook 3 is integrally formed with an insert block 31, which is adapted to the opening hole 21 on the manhole cover 2; during installation, the insert block 31 is first inserted through the opening hole 21 and inserted under the manhole cover 2, then rotated 90 degrees to make the insert block 31 misaligned with the opening hole 21, and then the locking nut A32 on the hook 3 is rotated to make the locking nut A32 abut against the upper surface of the manhole cover 2, and finally the hook 3 and the insert block 31 are firmly locked on the manhole cover 2.

[0044] The hook 3 not only serves a connecting function but also provides convenient conditions for gas detection. It adopts a hollow structure as a whole, and both the vertical part of the hook 3 and the through block 31 are provided with channels 34. These channels 34 allow the suction pipe 8 of the pump-type gas detector 7 to pass through vertically, so that the suction pipe 8 can be accurately inserted into the pipeline without the need to drill additional holes in the manhole cover 2 or find other through positions.

[0045] The lifting assembly is the core structure for automatically opening the manhole cover 2. In addition to the key lifting cylinder 4 and crossbar 5, it also includes the lifting frame 12. The crossbar 5 is fixed to the bottom of the lifting frame 12, while the lifting cylinder 4 is fixed to the top of the trolley 1. The piston rod of the lifting cylinder 4 passes through the trolley 1 and is fixedly connected to the lifting frame 12. Through the extension and retraction of the lifting cylinder 4, the lifting frame 12 can be moved up and down, thereby driving the crossbar 5 to rise and fall synchronously, providing power for lifting the manhole cover 2.

[0046] To ensure the stability and accuracy of the lifting frame 12 during its lifting process, two symmetrical guide rods 13 are fixedly installed at the bottom of the trolley 1. When the lifting frame 12 is raised or lowered, the guide rods 13 can restrict and guide its movement trajectory, preventing the lifting frame 12 from deviating due to uneven driving force of the lifting cylinder 4 or slight external collisions, and ensuring that the crossbar 5 can accurately cooperate with the hook 3.

[0047] The connection between the crossbar 5 and the hook 3 is further protected by an additional limiting mechanism: locking nuts B14 are threaded onto both ends of the crossbar 5. After the crossbar 5 is inserted into the hook groove 33 of the hook 3, the operator can rotate the locking nuts B14 to move them from both sides of the crossbar 5 to the outer end face of the hook 3, preventing the hook 3 from disengaging from the crossbar 5 during the lifting of the manhole cover 2, thus further enhancing structural stability.

[0048] The pump-suction gas detector 7 is an important piece of equipment to ensure the safety of pipeline workers. It is mainly used to detect the presence of toxic, flammable, explosive, and other harmful gases in pipelines. There are two detectors, each installed in a positioning box 6 on the top of the trolley 1. The positioning box 6 can fix and protect the detector, preventing it from shaking or being damaged during the movement of the device.

[0049] The structural design of the trolley 1 fully considers the ease of operation and the need for component storage: the trolley 1 is equipped with a handle 9, which allows the operator to easily push the trolley 1 to move; the end of the trolley 1 opposite to the handle 9 is designed as an open structure, which makes it easy to place the manhole cover 2 stably on the trolley 1 and move it after opening the manhole cover 2; at the same time, storage boxes 10 are fixed on both sides of the bottom of the trolley 1, which can store the suction pipe 8 when not in operation, avoiding damage or operation caused by messy pipe placement.

[0050] To facilitate the storage and retrieval of the hook 3, a hanging rod 11 is also fixedly installed on the trolley 1. When the hook 3 is not in use or after the manhole cover 2 has been moved, the staff can hang the hook 3 on the hanging rod 11. This not only prevents the hook 3 from being lost or damaged due to random placement, but also makes the layout of the entire device more organized and reduces the preparation time before the next operation.

[0051] A mounting box 15 is also installed on the top of the trolley 1, which integrates a controller 16 and a battery. The battery is installed in the mounting box 15 of the trolley 1 and establishes power supply lines with the controller 16, the lifting cylinder 4, and the pump-suction gas detector 7, providing operating power to all three. The controller 16 is also installed in the mounting box 15 and is connected to the lifting cylinder 4 and the pump-suction gas detector 7 via control lines, enabling it to send start, stop, and adjustment control commands. The detection data from the pump-suction gas detector 7 is fed back to the controller 16 via signal lines, facilitating real-time monitoring of the gas status in the pipeline. The pump-suction gas detector 7 can be either the HYS 2000 pump-suction portable composite gas detector alarm or the YF-900 portable multi-functional gas analyzer.

[0052] After the battery is connected to the power supply, the controller 16 enters the standby state, and the operator initiates the operation command through the operation interface of the controller 16. After receiving the detection command, the controller 16 starts the pump-suction gas detector 7. The pump-suction gas detector 7 draws gas from the pipeline through the suction pipe 8, and at the same time feeds the detection data back to the controller 16 in real time. If the gas index is abnormal, an alarm can be triggered to remind personnel to wear safety gear.

[0053] When the cover is opened, the controller 16 sends an action command to the lifting cylinder 4, which controls the piston rod of the lifting cylinder 4 to extend and retract, thereby driving the lifting frame 12 and the crossbar 5 to complete a series of actions, including moving down, inserting the hook 3 into the hook groove 33, locking the limit, and lifting the well cover 2.

[0054] During operation, the lifting cylinder 4 pushes the crossbar 5 downward, and the trolley 1 is manually pushed to the manhole cover 2. The crossbar 5 is pushed against the hook 3, and the lifting cylinder 4 is activated, causing the crossbar 5 to move upward so that it is inserted into the hook groove 33 of the hook 3. Then, the locking nut B14 is manually rotated so that the locking nut B14 limits the outer end face of the hook 3 from both sides of the crossbar 5. The suction pipe 8 on the pump-type gas detector 7 passes through the hole 34 on the hook 3 and extends into the pipeline to suck and detect the gas in the pipeline. After the detection is completed, the lifting cylinder 4 is activated to drive the lifting frame 12 and the hook 3 upward, which in turn drives the manhole cover 2 upward, thus opening the manhole cover 2. The trolley 1 is then pushed to move the manhole cover 2 away from the pipeline well opening for subsequent pipeline operations.

[0055] The lifting cylinder 4 drives the crossbar 5 to achieve automated lifting and pulling of the manhole cover 2, greatly reducing the physical exertion of manually handling the manhole cover 2 and avoiding the risk of damage to the manhole cover 2 or strain on the waist and hands of personnel due to improper manual operation. After the crossbar 5 is inserted into the hook groove 33 of the hook 3, the locking nut B14 limits the outer end face of the hook 3 from both sides, which can effectively prevent the hook 3 from disengaging from the crossbar 5 during the lifting process, ensuring the structural stability and operational safety of the manhole cover 2 when it is lifted. The suction pipe 8 of the pump-type gas detector 7 can be accurately inserted into the pipeline through the preset channel 34 of the hook 3. No additional drilling or repositioning is required, ensuring both the convenience and accuracy of gas detection data. It also allows for the early detection of toxic, flammable, and explosive gases in the pipeline, preventing potential safety hazards such as poisoning and explosions for workers. After the operation is completed, the manhole cover 2 can be quickly moved away from the manhole using a trolley 1. This avoids the manhole cover 2 occupying the working space and affecting the efficiency of subsequent pipeline construction, and also prevents unauthorized personnel from accidentally touching the manhole cover 2 and causing safety accidents. The overall process balances operational efficiency, safety, and practicality, effectively optimizing the preparation process before pipeline operations.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable pipeline operation safety device, characterized in that, include: A trolley (1) is used to move to the manhole cover (2) of the pipeline or to transfer the manhole cover (2) on the pipeline; The hook (3) has two detachable symmetrically mounted on the manhole cover (2); The lifting assembly moves the crossbar (5) up and down through the lifting cylinder (4) on it, thereby inserting the crossbar (5) into the hook groove (33) of the hook (3), or lifting the hook (3) and the well cover (2) upward by lifting the crossbar (5) to open the well cover (2). The pump-type gas detector (7) has a suction tube (8) that passes through the hook (3) and extends into the pipeline to pump and detect the gas in the pipeline.

2. The portable pipeline operation safety device according to claim 1, characterized in that: The bottom of the hook (3) is integrally formed with an insert block (31) that is compatible with the opening hole (21) on the well cover (2). The hook (3) is threaded with a locking nut A (32) that locks the hook (3) and the insert block (31) on the well cover (2). After the insert block (31) passes through the opening hole (21) and extends under the well cover (2), it rotates 90° to be misaligned with the opening hole (21). The locking nut A (32) is rotated so that the locking nut A (32) abuts against the upper surface of the well cover (2), thereby locking the hook (3) and the insert block (31) onto the well cover (2).

3. A portable pipeline operation safety device according to claim 2, characterized in that: The hook (3) is a hollow structure, and the vertical part of the hook (3) and the through block (31) are provided with a channel (34) for the suction tube (8) to pass through vertically.

4. A portable pipeline operation safety device according to claim 1, characterized in that: Two pump-type gas detectors (7) are provided and are installed in the positioning box (6) on the top of the trolley (1).

5. A portable pipeline operation safety device according to claim 1, characterized in that: The trolley (1) is equipped with a handle (9), and the end of the trolley (1) opposite to the handle (9) is designed as an open structure.

6. A portable pipeline operation safety device according to claim 1, characterized in that: The bottom sides of the trolley (1) are fixed with storage boxes (10) that are used to hold the suction tube (8).

7. A portable pipeline operation safety device according to claim 1, characterized in that: The trolley (1) is fixedly equipped with a hook (11) for positioning and attachment of the hook (3).

8. A portable pipeline operation safety device according to claim 1, characterized in that: The lifting assembly also includes a lifting frame (12), a crossbar (5) fixed to the bottom of the lifting frame (12), a lifting cylinder (4) fixed to the top of the trolley (1), and the piston rod of the lifting cylinder (4) passes through the trolley (1) and is fixedly connected to the lifting frame (12); The lifting cylinder (4) drives the lifting frame (12) to rise and fall, which in turn drives the crossbar (5) to rise and fall.

9. A portable pipeline operation safety device according to claim 1, characterized in that: The bottom of the trolley (1) is fixed with two symmetrically arranged guide rods (13) that cooperate with the lifting frame (12) for lifting and guiding.

10. A portable pipeline operation safety device according to claim 1, characterized in that: The two ends of the crossbar (5) are threaded with locking nuts B (14) that limit the outer end face of the hook (3).

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