Safety early-warning protection assembly for construction of center hole jack

Abstract

The utility model discloses a center hole jack construction safety early warning protection assembly, which belongs to the technical field of center hole jacks, and comprises a center hole jack, a controller, a monitoring mechanism and a protection mechanism, the monitoring mechanism comprises a distance measuring piece, a displacement sensor, a first pressure sensor and a second pressure sensor, and the distance measuring piece comprises a sleeve. The sleeve is slidably connected with the movable rod, a connecting plate is arranged between the movable rod and the piston, the displacement sensor is used for monitoring displacement data of the movable rod, the first pressure sensor is used for monitoring oil inlet pressure, the second pressure sensor is used for monitoring oil return pressure, and the protection mechanism comprises an infrared thermal imager. The controller is electrically connected with the infrared thermal imager, the displacement sensor, the first pressure sensor, the second pressure sensor and the alarm. The device not only monitors the running and filling of the cross-core jack, but also monitors whether people exist in the surrounding area, thereby being beneficial to guaranteeing the safety construction.

Description

Technical Field

[0001] This utility model belongs to the technical field of through-hole jacks, and specifically relates to a construction safety early warning and protection component for through-hole jacks. Background Technology

[0002] The through-type jack is a specialized jack used for tensioning prestressed tendons such as steel strands. It requires the use of a high-pressure oil pump, with both tensioning and retraction powered by the high-pressure oil from the pump. The through-type jack has a compact structure, operates smoothly during tensioning, has high oil pressure, and provides large tensioning force. It is widely used in prestressed construction projects such as highway bridges, railway bridges, hydropower dams, and high-rise buildings.

[0003] A Chinese utility model patent (CN219194450U) discloses a travel safety early warning device for a tunnel tensioning jack, comprising a controller, and an oil inlet valve body and a return valve body respectively connected to the oil inlet and return port of the jack; an oil inlet pressure sensor is also connected to the oil inlet valve body, and a return oil pressure sensor is also connected to the return oil valve body; a displacement sensor is fixedly connected to the jack cylinder, and a distance measuring device is connected to the piston rod; the signal output terminals of the oil inlet pressure sensor, the return oil pressure sensor, and the displacement sensor are connected to the controller, and the alarm control terminal of the controller is connected to an audible and visual alarm. This device can issue an early warning when the piston exceeds the safe travel during the tensioning process.

[0004] The aforementioned patents only monitor the operational status of the through-hole jack during use. During tensioning construction, personnel must not approach within a certain range around the through-hole jack, posing a safety hazard. In actual construction, the environment around the through-hole jack is often manually observed and controlled to maintain a safe distance for construction personnel. However, manual observation and control are prone to oversights, increasing the risk of safety accidents. The through-hole jack is heavy; its cylindrical sidewalls are prone to rolling when placed horizontally, and vertical placement is inconvenient for hoisting. The sensors are also at risk of collision damage during the hoisting process. Based on these issues, we propose a construction safety early warning and protection component for through-hole jacks. Utility Model Content

[0005] The purpose of this utility model is to provide a construction safety early warning and protection component for a through-hole type jack, which aims to solve the problems existing in the prior art mentioned above.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A construction safety early warning and protection component for a through-hole jack includes a through-hole jack, a controller, and a monitoring mechanism and a protection mechanism installed on the through-hole jack. The monitoring mechanism includes a distance measuring element, a displacement sensor, a first pressure sensor, and a second pressure sensor. The distance measuring element includes a sleeve installed on the side wall of the through-hole jack, and the sleeve is slidably connected to a movable rod. A connecting plate is provided between the movable rod and the piston of the through-hole jack. The displacement sensor is used to monitor the displacement data of the movable rod. The first pressure sensor is installed at the oil inlet of the through-hole jack and is used to monitor the oil inlet pressure. The second pressure sensor is installed at the oil return inlet of the through-hole jack and is used to monitor the oil return pressure of the through-hole jack. The protection mechanism includes an infrared thermal imager. The through-hole jack is equipped with an alarm. The controller is electrically connected to the infrared thermal imager, the displacement sensor, the first pressure sensor, the second pressure sensor, and the alarm.

[0008] Furthermore, the oil inlet and return nozzles of the through-type jack are provided with lifting rings on opposite side walls, the ranging device is provided on one side of the oil inlet and return nozzles, and the protective mechanism also includes a protective frame, which is provided on both sides of the monitoring mechanism.

[0009] Furthermore, the protective frame has an H-shaped structure and includes a first support rod and a second support rod that are respectively connected to the through-type jack, and a third support rod disposed between the first support rod and the second support rod. The ends of the first support rod and the second support rod are provided with pulleys.

[0010] Furthermore, the infrared thermal imagers are respectively installed on the top surface of the through-hole jack, on both sides of the piston, between the protective frames on both sides and the lifting ring, and on the side wall of the sleeve. The infrared thermal imagers are used to monitor the piston's movement direction and the areas on both sides and below the through-hole jack.

[0011] Furthermore, the alarm is an audible and visual alarm, and the alarm is installed between the hanging rings.

[0012] Furthermore, the inner side of the lifting ring is provided with a limiting groove, which is used to limit the lifting rope.

[0013] Compared with the shortcomings and deficiencies of existing technologies, this utility model has the following beneficial effects:

[0014] This utility model provides a construction safety early warning and protection component for a through-hole jack. It uses a displacement sensor and a distance measuring device to monitor piston displacement data, and generates oil inlet and return pressures of the through-hole jack by monitoring with a first pressure sensor and a second pressure sensor. This avoids the risk of the piston continuing to load when it is at full stroke. The through-hole jack is equipped with an infrared thermal imager to monitor whether there are personnel in the area along the piston movement direction, as well as on both sides and below it. When the monitoring data of the through-hole jack operation or the surrounding environment is abnormal, the controller activates an alarm to alert the construction personnel, thereby reducing the safety risks during the tensioning construction process.

[0015] The lifting ring and the monitoring mechanism are positioned opposite each other. When hoisting the through-hole jack, the lifting ring is located at the top and the monitoring mechanism is located at the bottom. Protective frames are installed on both sides of the monitoring mechanism to effectively reduce the risk of collision damage to the monitoring mechanism. The protective frames are equipped with pulleys to facilitate the movement of the through-hole jack. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the monitoring mechanism and the protection mechanism in the through-hole jack of this utility model.

[0017] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0018] Figure 3 This is a schematic diagram of the protective mechanism in this utility model.

[0019] Figure 4 This is a schematic diagram of the control relationship of the controller in this utility model.

[0020] In the diagram: 1. Through-hole jack; 2. Piston; 3. Rangefinder; 4. Infrared thermal imager; 5. Lifting ring; 6. Protective frame; 7. Second pressure sensor; 8. Pulley; 9. Limiting groove; 10. Alarm; 11. First pressure sensor; 12. Sleeve; 13. Movable rod; 14. Connecting rod; 15. First support rod; 16. Second support rod; 17. Third support rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Reference Figures 1-4A construction safety early warning and protection component for a through-hole jack includes a through-hole jack 1, a controller, and a monitoring mechanism and a protection mechanism installed on the through-hole jack 1. During construction, the monitoring mechanism is used to monitor the operating status of the through-hole jack 1, and the protection mechanism is used to monitor and warn of the environment around the through-hole jack 1 to ensure the safe progress of construction.

[0023] The side wall of the through-hole jack 1 is provided with a lifting ring 5. The lifting ring 5 is located on the opposite side of the oil inlet and oil return nozzle of the through-hole jack 1. The lifting ring 5 is used for hoisting equipment to lift the through-hole jack 1, and facilitates the assembly and tensioning of the steel strand with the through-hole jack 1.

[0024] In one embodiment, a limiting groove 9 is provided on the top inner side of the lifting ring 5. The limiting groove 9 is used for quick positioning of the lifting rope, which helps to improve the stability of the connection between the rope and the lifting ring 5 and reduce the risk of rope slippage.

[0025] The monitoring mechanism includes a ranging unit and an oil pressure monitoring unit, both of which are located on the outer wall of the through-hole jack 1. The ranging unit includes a ranging element 3 and a displacement sensor. The ranging element 3 includes a sleeve 12, with a movable rod 13 passing through the sleeve 12. The moving direction of the movable rod 13 is the same as the moving direction of the piston 2 of the through-hole jack 1. A connecting rod 14 is provided between the end of the movable rod 13 and the piston 2. The piston 2 drives the movable rod 13 to move through the connecting rod 14. The displacement sensor obtains the displacement data of the piston 2 by measuring the displacement of the movable rod 13. The ranging unit is located on one side of the oil inlet and oil return nozzle of the through-hole jack 1. The oil pressure monitoring unit includes a first pressure sensor 11 located at the oil inlet and a second pressure sensor 7 located at the oil return nozzle. The first pressure sensor 11 is used to monitor the oil inlet pressure of the oil inlet, and the second pressure sensor 7 is used to monitor the oil return pressure of the oil return nozzle.

[0026] The protective mechanism includes a protective frame 6 and an environmental monitoring unit. The protective frame 6 is located on both sides of the monitoring mechanism and is used to protect the monitoring unit, reducing the risk of collision damage to the monitoring mechanism during the hoisting of steel strands by the through-hole jack 1. The protective frame 6 has an H-shaped structure and includes a first support rod 15 and a second support rod 16 connected to the side wall of the through-hole jack 1, and a third support rod 17 connecting the first support rod 15 and the second support rod 16. The ends of the first support rod 15 and the second support rod 16 are equipped with pulleys 8, which facilitate the movement of the through-hole jack 1. The environmental monitoring unit is used to monitor the construction process. To monitor whether there are personnel within a certain range around the through-hole jack 1, in order to reduce the risk of construction accidents, the environmental monitoring unit includes an infrared thermal imager 4. The infrared thermal imager 4 is set at the end of the through-hole jack 1 on both sides of the piston 2 to monitor the movement direction of the piston 2. The infrared thermal imager 4 is set on the side wall of the through-hole jack 1, between the protective frames 6 on both sides and the lifting ring 5, to monitor the area on both sides of the through-hole jack 1 during the tensioning process. The infrared thermal imager 4 is set on the outside of the sleeve 12 and faces away from the through-hole jack 1 to monitor the area below the through-hole jack 1 during the tensioning process.

[0027] The through-hole jack 1 is equipped with an alarm 10, which is located between or on both sides of the lifting rings 5. During operation, when the through-hole jack 1 is hoisted to a certain height to facilitate the passage of the steel strand, the alarm 10 is located at the highest point of the through-hole jack 1. The alarm 10 is an audible and visual alarm, which is convenient for surrounding construction personnel to quickly detect.

[0028] The infrared thermal imager 4, displacement sensor, first pressure sensor 11 and second pressure sensor 7 are electrically connected to the controller, and the controller is electrically connected to the alarm 10. When the infrared thermal imager 4, displacement sensor or pressure sensor detects abnormal operation of the environment or equipment around the through-hole jack 1, the controller 1 controls the alarm 10 to sound an alarm, which facilitates construction personnel to quickly discover and handle the situation, and helps to ensure construction safety.

[0029] When using this through-hole jack construction safety early warning and protection component, pulley 8 is used to move through-hole jack 1 to the hoisting equipment. The hoisting equipment lifts through-hole jack 1 through lifting ring 5. Steel strands are assembled to through-hole jack 1. During the construction tensioning process, displacement sensor monitors the displacement data of piston 2, and first pressure sensor 11 and second pressure sensor 7 monitor the oil pressure entering and exiting through-hole jack 1 to monitor and ensure the normal operation of through-hole jack. At the same time, infrared thermal imager 4 monitors the movement direction of piston 2 and the two sides and the area below through-hole jack 1 to prevent personnel from approaching during construction tensioning. When through-hole jack 1 is running or the surrounding environment is abnormal, the controller controls alarm 10 to sound an alarm to remind construction personnel, which can effectively reduce the risk of construction accidents.

[0030] The monitoring mechanism is set on the opposite side of the lifting ring 5, and the protective frame 6 is set on both sides of the monitoring mechanism to reduce the risk of collision damage to the monitoring mechanism during the hoisting of the through-hole jack 1. At the same time, the protective frame 6 provides support for the through-hole jack 1 and is equipped with pulleys 8 for easy movement, which helps to improve the convenience of loading and unloading the through-hole jack 1.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 construction safety early warning and protection component for a through-hole type jack, characterized in that, The device includes a through-hole jack, a controller, and a monitoring and protection mechanism installed on the through-hole jack. The monitoring mechanism includes a ranging element, a displacement sensor, a first pressure sensor, and a second pressure sensor. The ranging element includes a sleeve installed on the side wall of the through-hole jack, and the sleeve is slidably connected to a movable rod. A connecting plate is provided between the movable rod and the piston of the through-hole jack. The displacement sensor is used to monitor the displacement data of the movable rod. The first pressure sensor is installed at the oil inlet of the through-hole jack and is used to monitor the oil inlet pressure. The second pressure sensor is installed at the oil return inlet of the through-hole jack and is used to monitor the oil return pressure of the through-hole jack. The protection mechanism includes an infrared thermal imager. The through-hole jack is equipped with an alarm. The controller is electrically connected to the infrared thermal imager, the displacement sensor, the first pressure sensor, the second pressure sensor, and the alarm.

2. The through-hole type jack construction safety early warning and protection component as described in claim 1, characterized in that, The oil inlet and return nozzles of the through-type jack are provided with lifting rings on opposite side walls. The ranging device is located on one side of the oil inlet and return nozzles. The protective mechanism also includes a protective frame, which is located on both sides of the monitoring mechanism.

3. The through-hole type jack construction safety early warning and protection component as described in claim 2, characterized in that, The protective frame has an H-shaped structure and includes a first support rod and a second support rod that are respectively connected to a through-type jack, and a third support rod disposed between the first support rod and the second support rod. The ends of the first support rod and the second support rod are provided with pulleys.

4. The through-hole type jack construction safety early warning and protection component as described in claim 2, characterized in that, The infrared thermal imagers are respectively installed on the top surface of the through-hole jack, on both sides of the piston, between the protective frames on both sides and the lifting ring, and on the side wall of the sleeve. The infrared thermal imagers are used to monitor the piston's movement direction and the areas on both sides and below the through-hole jack.

5. The through-hole type jack construction safety early warning and protection component as described in claim 2, characterized in that, The alarm is an audible and visual alarm, and it is installed between the hanging rings.

6. The through-hole type jack construction safety early warning and protection component as described in claim 2, characterized in that, The inner side of the lifting ring is provided with a limiting groove.

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