Tunnel personnel positioning device

Abstract

The utility model discloses a tunnel personnel positioning device, which relates to the technical field of tunnel safety and comprises a positioning device body and a bandage for fixing the positioning device body on an arm of a worker. A containing cavity is formed in the back side of the positioning device body, and a movable rear cover is slidably installed in the containing cavity and elastically connected with the inner wall of the containing cavity through an elastic piece. According to the tunnel personnel positioning device, through the arrangement of the piezoelectric blocks and the piezoelectric patches, when the arms of a worker swing in the movement or working process, electric energy can be supplemented to the storage battery, the cruising ability of the tunnel personnel positioning device is greatly prolonged, and the working efficiency is improved. Even if a worker forgets to charge, electric energy can be supplemented in the moving and working process, the requirement for long-time tunnel operation can be met, and it is guaranteed that the tunnel personnel positioning device can provide the long-time positioning effect.

Description

Technical Field

[0001] This utility model relates to the field of tunnel safety technology, and in particular to a tunnel personnel positioning device. Background Technology

[0002] Tunnel construction is quite challenging and presents safety hazards (such as collapses and cave-ins) that can threaten the personal safety of construction workers. Therefore, construction workers wear positioning devices to locate and rescue them in case of danger, and some positioning devices also have distress signaling functions.

[0003] A search revealed a patent document with publication number "CN218868385U" that discloses a strap-on tunnel personnel positioning device, which includes a housing, a base fixedly connected to the bottom of the housing, a limit seat installed at the bottom inside the housing, a battery placed on the left side inside the limit seat, a locator placed on the right side inside the limit seat, and a buffer pad adhered to the groove inside the base.

[0004] Based on the above search and combined with existing technology, it was found that most existing tunnel personnel positioning devices use rechargeable batteries for power supply so that the locator can work continuously. However, the battery has a limited capacity. If it cannot be charged during long-term tunnel operations or is forgotten to be charged, the battery may run out of power, causing the device to lose its positioning function. Therefore, a tunnel personnel positioning device is needed. Utility Model Content

[0005] The purpose of this application is to provide a tunnel personnel positioning device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a tunnel personnel positioning device, including a positioning device body and a strap for fixing the positioning device body to the worker's arm;

[0007] The positioning device body has a receiving cavity on the back side, and a movable rear cover is slidably installed in the receiving cavity. The movable rear cover is elastically connected to the inner wall of the receiving cavity through an elastic element.

[0008] A fixing plate is also fixed inside the cavity. A piezoelectric sheet is fixed on the side of the fixing plate near the movable rear cover. A piezoelectric block corresponding to the piezoelectric sheet is fixed on the inside of the movable rear cover. When the piezoelectric block strikes the piezoelectric sheet, the piezoelectric sheet generates electrical energy.

[0009] The piezoelectric element is electrically connected to the battery inside the positioning device body through a power adjustment mechanism.

[0010] Preferably, multiple piezoelectric sheets are provided, and the multiple piezoelectric sheets are evenly distributed along the side of the fixed plate near the movable rear cover;

[0011] There are also multiple piezoelectric blocks, and each piezoelectric block corresponds to a piezoelectric sheet;

[0012] Multiple piezoelectric elements are electrically connected to the battery inside the positioning device body through a power adjustment mechanism.

[0013] Preferably, an auxiliary piezoelectric component is also installed on the side of the fixed plate away from the movable back cover. The output end of the auxiliary piezoelectric component is also electrically connected to the battery inside the positioning device body through a power adjustment mechanism. The auxiliary piezoelectric component generates electrical energy when the positioning device body moves in a direction different from the direction of movement of the movable back cover.

[0014] Preferably, the auxiliary piezoelectric assembly includes a guide side plate, a piezoelectric limiting plate, and a ball bearing. Two guide side plates are provided and distributed in parallel. The guide side plates are fixed to the side wall of the fixed plate. Similarly, two piezoelectric limiting plates are provided and arranged symmetrically. The two piezoelectric limiting plates are located at the two ends of the two guide side plates and close the two ends of the two guide side plates. The ball bearing is located in the groove formed by the guide side plate and the piezoelectric limiting plate. When the ball bearing hits the guide side plate, it generates electrical energy. A cover is fixed on the side of the guide side plate and the piezoelectric limiting plate away from the fixed plate. The cover closes the groove formed by the guide side plate and the piezoelectric limiting plate.

[0015] Preferably, multiple sets of auxiliary piezoelectric components are provided, and the multiple sets of auxiliary piezoelectric components form at least three different extension directions, and the multiple balls in the multiple sets of auxiliary piezoelectric components move in different directions.

[0016] Preferably, the inner walls on both sides of the receiving cavity are provided with sliding grooves, and the movable rear cover is integrally formed with a slider on the side wall inside the positioning device body, and the slider is slidably embedded in the sliding groove.

[0017] The elastic element includes a spring, with its two ends fixed to the inner side of the movable rear cover and the inner side of the receiving cavity, respectively.

[0018] The fixing plate has a through hole for the spring to move through.

[0019] In summary, the technical effects and advantages of this utility model are as follows:

[0020] 1. In this utility model, by setting up piezoelectric blocks and piezoelectric sheets, after the worker wears the positioning device body through straps, when the worker swings their arm during movement or work, the arm generates pressure on the movable back cover, causing the movable back cover to overcome the elastic force of the elastic element and move towards the fixed plate, thereby driving the piezoelectric block to strike the piezoelectric sheet to generate electrical energy. The generated electrical energy is converted into electrical energy that matches the input electrical energy of the storage battery after being adjusted by the power adjustment mechanism, thereby replenishing the storage battery and greatly extending the battery life of the tunnel personnel positioning device. Even if the worker forgets to charge, they can replenish the electrical energy during movement and work, which can meet the needs of long-term tunnel operations and ensure that the tunnel personnel positioning device can provide long-term positioning function.

[0021] 2. In this utility model, by setting up an auxiliary piezoelectric component, when the positioning device body swings with the worker's arm, the ball moves towards the piezoelectric limiting plate under the limiting action of the guide side plate and the cover, and impacts the piezoelectric limiting plate, causing the piezoelectric limiting plate to generate electrical energy. After being adjusted by the power adjustment mechanism, the electrical energy is also input into the battery to replenish the battery's charge. When used in conjunction with multiple piezoelectric plates and multiple piezoelectric blocks, more electrical energy can be generated, resulting in a better charging effect for the battery. Even when the battery is depleted, a simple arm swing can achieve a rapid charging effect, ensuring that the tunnel personnel positioning device can start quickly and play a continuous positioning role. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0024] Figure 2 This is a top sectional view of this embodiment;

[0025] Figure 3 This is a schematic diagram of the auxiliary piezoelectric component structure in this embodiment.

[0026] In the figure: 1. Positioning device body; 11. Receiving cavity; 12. Slide groove; 2. Strap; 3. Movable back cover; 31. Slider; 4. Fixing plate; 41. Perforation; 5. Piezoelectric sheet; 6. Piezoelectric block; 7. Spring; 8. Auxiliary piezoelectric assembly; 81. Guide side plate; 82. Piezoelectric limiting plate; 83. Ball bearing; 84. Clip cover. Detailed Implementation

[0027] 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.

[0028] Example: Reference Figures 1-3 The tunnel personnel positioning device shown includes a positioning device body 1 and a strap 2 for fixing the positioning device body 1 to the worker's arm.

[0029] The positioning device body 1 has a receiving cavity 11 on the back side, and a movable rear cover 3 is slidably installed in the receiving cavity 11. The movable rear cover 3 is elastically connected to the inner wall of the receiving cavity 11 through an elastic element.

[0030] A fixing plate 4 is also fixed inside the cavity 11. A piezoelectric sheet 5 is fixed on the side of the fixing plate 4 near the movable rear cover 3. The piezoelectric sheet 5 is made of a piezoelectric material commonly used in the prior art and applicable to this embodiment, such as a piezoelectric crystal, piezoelectric ceramic or piezoelectric polymer. A piezoelectric block 6 corresponding to the piezoelectric sheet 5 is fixed inside the movable rear cover 3. When the piezoelectric block 6 strikes the piezoelectric sheet 5, it causes the piezoelectric sheet 5 to generate electrical energy.

[0031] The piezoelectric element 5 is electrically connected to the battery inside the positioning device body 1 via a power adjustment mechanism;

[0032] The power adjustment mechanism uses existing technologies that can regulate current and voltage, including but not limited to rectifier bridges and voltage regulators. Their specific structures and working principles are existing technologies and will not be described in detail here.

[0033] Based on the above structure, after the staff wears the positioning device body 1 through the strap 2, when the staff swings their arms during movement or work, the arms exert pressure on the movable back cover 3, causing the movable back cover 3 to overcome the elastic force of the elastic element and move towards the fixed plate 4, thereby driving the piezoelectric block 6 to strike the piezoelectric sheet 5 to generate electrical energy. The generated electrical energy is converted into electrical energy that matches the input electrical energy of the storage battery after being adjusted by the power adjustment mechanism, thereby replenishing the storage battery and greatly extending the battery life of the tunnel personnel positioning device. Even if the staff forgets to charge, they can replenish the electrical energy during movement and work, which can meet the needs of long-term tunnel operations and ensure that the tunnel personnel positioning device can provide long-term positioning function.

[0034] Furthermore, in order to improve the efficiency and effectiveness of power replenishment, multiple piezoelectric sheets 5 are provided, and the multiple piezoelectric sheets 5 are evenly distributed along the side of the fixed plate 4 near the movable rear cover 3; multiple piezoelectric blocks 6 are also provided, and the multiple piezoelectric blocks 6 correspond one-to-one with the multiple piezoelectric sheets 5; the multiple piezoelectric sheets 5 are all electrically connected to the storage battery in the positioning device body 1 through the power adjustment mechanism, so that more power is generated in one operation, which can further improve the power replenishment efficiency and replenishment amount of the storage battery.

[0035] Furthermore, an auxiliary piezoelectric component 8 is also installed on the side of the fixed plate 4 away from the movable rear cover 3. The output end of the auxiliary piezoelectric component 8 is also electrically connected to the battery in the positioning device body 1 through the power adjustment mechanism. The auxiliary piezoelectric component 8 generates electrical energy when the positioning device body 1 moves in a direction different from the direction of movement of the movable rear cover 3.

[0036] The auxiliary piezoelectric assembly 8 includes a guide side plate 81, a piezoelectric limiting plate 82, and a ball bearing 83. Two guide side plates 81 are provided and distributed in parallel. The guide side plates 81 are fixed to the side wall of the fixed plate 4. Similarly, two piezoelectric limiting plates 82 are provided and arranged symmetrically. The two piezoelectric limiting plates 82 are located at the two ends of the two guide side plates 81 respectively and close the two ends of the two guide side plates 81. The ball bearing 83 is located in the groove formed by the guide side plate 81 and the piezoelectric limiting plate 82. When the ball bearing 83 hits the guide side plate 81, it generates electrical energy. A cover 84 is fixed on the side of the guide side plate 81 and the piezoelectric limiting plate 82 away from the fixed plate 4. The cover 84 closes the groove formed by the guide side plate 81 and the piezoelectric limiting plate 82.

[0037] With the setting of auxiliary piezoelectric component 8, when the positioning device body 1 swings with the operator's arm, the ball 83 moves towards the piezoelectric limiting plate 82 and hits the piezoelectric limiting plate 82 under the limiting action of the guide side plate 81 and the cover 84, so that the piezoelectric limiting plate 82 generates electrical energy. After the electrical energy is adjusted by the power adjustment mechanism, it is also input into the battery to replenish the battery's power.

[0038] In addition, multiple sets of auxiliary piezoelectric components 8 are provided, and the multiple sets of auxiliary piezoelectric components 8 form at least three different extension directions. The multiple balls 83 in the multiple sets of auxiliary piezoelectric components 8 move in different directions, so that when the worker's arm moves in any direction, the auxiliary piezoelectric components 8 can be triggered to generate electrical energy. When used in conjunction with multiple piezoelectric plates 5 and multiple piezoelectric blocks 6, more electrical energy can be generated, and the charging effect of the battery is better. Even when the battery is depleted, a simple arm swing can achieve a fast charging effect, ensuring that the tunnel personnel positioning device can be quickly started and play a continuous positioning role.

[0039] Furthermore, the inner walls of the cavity 11 on both sides are provided with grooves 12, and the movable rear cover 3 is integrally formed with a slider 31 on the side wall inside the positioning device body 1. The slider 31 is slidably embedded in the groove 12.

[0040] The elastic element includes a spring 7, with both ends of the spring 7 fixed to the inner side of the movable rear cover 3 and the inner side of the receiving cavity 11, respectively.

[0041] The fixed plate 4 has a through hole 41 for the spring 7 to pass through.

[0042] The working principle of this utility model is as follows: During daily use, after the worker wears the positioning device body 1 through the strap 2, when the worker swings their arm during movement or work, the arm exerts pressure on the movable back cover 3, causing the movable back cover 3 to overcome the elastic force of the elastic element and move towards the fixed plate 4. This causes the piezoelectric block 6 to strike the piezoelectric sheet 5 and generate electrical energy. At the same time, the ball bearing 83 moves towards the piezoelectric limiting plate 82 and strikes the piezoelectric limiting plate 82 under the limiting action of the guide side plate 81 and the cover 84, causing the piezoelectric limiting plate 82 to generate electrical energy. The generated electrical energy is converted into electrical energy that is compatible with the battery input after being adjusted by the power adjustment mechanism, thereby replenishing the battery and greatly extending the battery life of the tunnel personnel positioning device. Even if the worker forgets to charge, the electrical energy can be replenished during movement and work, which can meet the needs of long-term tunnel operations and ensure that the tunnel personnel positioning device can provide long-term positioning function.

[0043] 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 tunnel personnel positioning device, comprising a positioning device body (1) and a strap (2) for fixing the positioning device body (1) to the worker's arm, characterized in that: The positioning device body (1) has a receiving cavity (11) on its back side. A movable back cover (3) is slidably installed in the receiving cavity (11). The movable back cover (3) is elastically connected to the inner wall of the receiving cavity (11) through an elastic element. A fixing plate (4) is also fixed inside the cavity (11). A piezoelectric sheet (5) is fixed on the side of the fixing plate (4) near the movable rear cover (3). A piezoelectric block (6) corresponding to the piezoelectric sheet (5) is fixed inside the movable rear cover (3). When the piezoelectric block (6) strikes the piezoelectric sheet (5), the piezoelectric sheet (5) generates electrical energy. The piezoelectric element (5) is electrically connected to the battery inside the positioning device body (1) through a power adjustment mechanism.

2. The tunnel personnel positioning device according to claim 1, characterized in that: Multiple piezoelectric sheets (5) are provided, and the multiple piezoelectric sheets (5) are evenly distributed along the side of the fixed plate (4) near the movable rear cover (3); The piezoelectric block (6) is also provided in multiple ways, and the multiple piezoelectric blocks (6) correspond one-to-one with the multiple piezoelectric sheets (5); Each of the piezoelectric elements (5) is electrically connected to the battery inside the positioning device body (1) through a power adjustment mechanism.

3. The tunnel personnel positioning device according to claim 1, characterized in that: An auxiliary piezoelectric component (8) is also installed on the side of the fixed plate (4) away from the movable back cover (3). The output end of the auxiliary piezoelectric component (8) is also electrically connected to the battery in the positioning device body (1) through the power adjustment mechanism. The auxiliary piezoelectric component (8) generates electrical energy when the positioning device body (1) moves in a direction different from the direction of movement of the movable back cover (3).

4. The tunnel personnel positioning device according to claim 3, characterized in that: The auxiliary piezoelectric assembly (8) includes a guide side plate (81), a piezoelectric limiting plate (82), and a ball bearing (83). There are two guide side plates (81) arranged in parallel. The guide side plates (81) are fixed to the side wall of the fixing plate (4). There are also two piezoelectric limiting plates (82) arranged symmetrically. The two piezoelectric limiting plates (82) are located at the two ends of the two guide side plates (81) respectively and close the two ends of the two guide side plates (81). The ball bearing (83) is located in the groove formed by the guide side plate (81) and the piezoelectric limiting plate (82). When the ball bearing (83) hits the guide side plate (81), it generates electrical energy. A cover (84) is fixed on the side of the guide side plate (81) and the piezoelectric limiting plate (82) away from the fixing plate (4). The cover (84) closes the groove formed by the guide side plate (81) and the piezoelectric limiting plate (82).

5. The tunnel personnel positioning device according to claim 4, characterized in that: The auxiliary piezoelectric component (8) is provided in multiple sets, and the multiple sets of auxiliary piezoelectric components (8) form at least three different extension directions. The movement direction of multiple balls (83) in the multiple sets of auxiliary piezoelectric components (8) is the same as the extension direction of the auxiliary piezoelectric component (8).

6. The tunnel personnel positioning device according to claim 1, characterized in that: The inner walls of the accommodating cavity (11) on both sides are provided with sliding grooves (12), and the movable back cover (3) is integrally formed with a slider (31) on the side wall inside the positioning device body (1). The slider (31) is slidably embedded in the sliding groove (12). The elastic element includes a spring (7), and the two ends of the spring (7) are fixed to the inner side of the movable rear cover (3) and the inner side of the receiving cavity (11), respectively. The fixing plate (4) has a through hole (41) through which the spring (7) moves.

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