Mechanical stay wire displacement early warning sensor

Abstract

The invention relates to a mechanical stay wire displacement early warning sensor, which comprises a supporting module, a display and early warning module and a transmission module, and is characterized in that the supporting module comprises an outer shell, a first supporting plate, a second supporting plate, a wire coil protection plate, a first transverse supporting plate, a second transverse supporting plate and a third transverse supporting plate; the display and early warning module comprises a dial plate, a pointer, a gas tank and a rack valve; the transmission module comprises a driving shaft, a wire coil, a volute spiral spring, a first-stage driving straight gear, a first-stage driven shaft, a first-stage driven straight gear, a worm, a second-stage driven shaft, a second-stage driving straight gear, a worm gear, a driving bevel gear, a second-stage driving straight gear, a pointer shaft, a second-stage driven straight gear, a third-stage driven shaft, a driven bevel gear and a third-stage driving straight gear. The device is simple in structure, convenient to install and capable of adapting to severe environments, permanent monitoring can be achieved through one-time installation, and the monitoring problem of high towers, deep pits and other places where charging and power supply are inconvenient to disassemble is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of displacement gauges, and particularly to a mechanical wire-pulling displacement warning sensor. Background Art

[0002] With the increasing popularity of monitoring devices in the engineering field, the requirements for the performance of the devices are also gradually increasing. In actual engineering projects, the environment is mostly harsh, and the monitoring sites are diverse. Many working conditions have the characteristics of long-term monitoring, difficult installation and replacement, and difficult signal transmission. For example, the displacement between the steel frames at the top of a high tower without power nearby, and the safety monitoring of construction equipment at an outdoor construction site with poor signals.

[0003] The mechanical wire-pulling displacement warning sensor includes a pointer-type dial and a warning air tank. When there is a relative displacement between the measured position and the reference point, the gear set starts to move as the wire reel body rotates. The pointer records the distance that the wire of the wire reel moves on the dial. The inspection personnel or on-site construction personnel can observe and record the numerical value of the device dial, and thereby understand the safety level of the on-site environment. When the distance reaches the preset value, the rack valve opens, and the air tank will spray colored air powder at the bottom of the sensor to warn the on-site construction personnel or inspection personnel.

[0004] When monitoring the working site environment, most traditional displacement gauges on the market are magnetic grating displacement gauges. The sealing test and operating environment are too ideal. During long-term operation, the battery needs to be charged regularly, and the data changes greatly each time it is disassembled. The construction site environment is complex, and it is difficult to timely feedback data when the data transmission effect is poor in windy, sandy, rainy and cloudy weather. In addition, the warning effect on the actual on-site operators when the data is fed back to the background is average.

[0005] In view of the pain points of the displacement gauge being difficult to use in environments with characteristics such as long-term monitoring, difficult installation and replacement, and difficult signal transmission, the present invention provides a mechanical wire-pulling displacement warning sensor. Summary of the Invention

[0006] Based on the above description, the present invention provides a mechanical wire-pulling displacement warning sensor, which can provide real-time feedback of the actual displacement situation on-site through high-precision mechanical transmission, and is designed with an alarm system. The mechanical structure without electricity can adapt to a more harsh environment, so as to solve the problem that the existing displacement sensors are difficult to use in the actual working environment with characteristics such as long-term monitoring, difficult installation and replacement, and difficult signal transmission.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] A mechanical wire-pulling displacement warning sensor includes a support module, a display and warning module, and a transmission module.

[0009] The support module includes a housing, a bottom plate, a first support plate, a second support plate, a wire reel protection plate, a first horizontal support plate, a second horizontal support plate, and a third horizontal support plate;

[0010] The display and warning module includes a dial, a pointer, an air tank, and a rack valve;

[0011] The transmission module includes a driving shaft assembly, a first driven shaft assembly, a second driven shaft assembly, a pointer shaft assembly, and a third driven shaft assembly.

[0012] Based on the above technical solutions, the present invention can be further improved as follows.

[0013] Further, the wire reel protection plate, the first horizontal support plate, the second horizontal support plate, and the third horizontal support plate are installed between the first support plate and the second support plate to play a role in fixing and supporting the overall device.

[0014] Further, both sides of the air tank are provided with openings to fix the first support plate and the second support plate, and the lower opening is fixed to the bottom plate to fix the overall device as a whole.

[0015] Further, the driving shaft assembly, the first driven shaft assembly, and the second driven shaft assembly are installed between the first support plate and the second support plate. The third driven shaft assembly is installed between the first horizontal support plate and the third horizontal support plate through bearings and passes through the second horizontal support plate. The pointer shaft assembly and the pointer are installed on the first horizontal support plate and pass through the housing for display on the dial.

[0016] Further, the driving shaft assembly includes a driving shaft, a wire reel, a volute spring, and a first-stage driving spur gear; the first driven shaft assembly includes a first-stage driven shaft, a first-stage driven spur gear, and a worm; the second driven shaft assembly includes a second-stage driven shaft, a first-stage driven spur gear, a worm gear, a driving bevel gear, and a second-stage driving spur gear; the pointer shaft assembly includes a pointer shaft and a second-stage driven spur gear; the third driven shaft assembly includes a third-stage driven shaft, a driven bevel gear, and a third-stage driving spur gear.

[0017] Further, the shape of the main wire reel is adapted to the shape of the wire reel protection plate, and the shape of the volute spring is adapted to the convex part of the second support plate.

[0018] Further, the diameter of the first-stage driving spur gear is smaller than that of the first-stage driven spur gear, and the tooth profile part of the first-stage driving spur gear meshes with the tooth profile part of the first-stage driven spur gear; the worm tooth profile part meshes with the worm gear tooth profile part; the diameter of the second-stage driving spur gear is larger than that of the second-stage driven spur gear, and the tooth profile part of the second-stage driving spur gear meshes with the tooth profile part of the second-stage driven spur gear; the diameter of the driving bevel gear is the same as that of the driven bevel gear, and the tooth profile part of the driving bevel gear meshes with the tooth profile part of the bevel gear; the tooth profile part of the third-stage driving spur gear meshes with the tooth profile part of the rack valve.

[0019] Further, the first-stage driving spur gear is a 20-tooth gear with a module of 0.6; the first-stage driven spur gear is a 40-tooth gear with a module of 0.6; the worm is 8 mm long with a module of 0.5; the worm gear is a 30-tooth gear with a module of 0.5; the second-stage driving spur gear is a 40-tooth gear with a module of 0.6; the second-stage driven spur gear is a 10-tooth gear with a module of 0.6; the driving bevel gear is a 14-tooth gear with a module of 1; the driven bevel gear is a 14-tooth gear with a module of 1; the third-stage driving spur gear is a 20-tooth gear with a module of 0.6.

[0020] Further, the rack valve is made of rubber and functions as a valve switch for guiding the air tank through the third horizontal support plate.

[0021] Further, M2.5 screws are used for installation on both sides of the wire reel protection plate, the first horizontal support plate, the second horizontal support plate, and the third horizontal support plate.

[0022] Further, the driving shaft assembly, the first-stage driven shaft assembly, and the second-stage driven shaft assembly are installed using ball bearings.

[0023] Further, the torsion spring generates a resilience force to rotate the driving shaft when the displacement between the monitoring point and the reference point decreases, for taking up the wire.

[0024] Further, the width of the wire reel is 15 times the diameter of the steel wire rope, and theoretically, 15 turns of wire can be taken up.

[0025] Compared with the prior art, the technical solution of the present invention has the following beneficial technical effects:

[0026] The present invention uses a mechanical transmission structure to replace the traditional magnetic grating induction structure, and uses a colored gas powder ejected from an air tank for warning, completely removing the required power part, enabling permanent monitoring with one installation, and eliminating the monitoring problems in places such as high towers and deep pits where it is inconvenient to disassemble for charging and power supply.

[0027] The present invention innovatively uses a combination of mechanical transmission with a dial and an air tank. The angular velocity transmission ratio of the three-stage gear transmission is fifteen to one, converting the steel wire rope of fifteen turns into one turn of the dial rotation. The rotational speed ratio of the wire reel to the cylinder rack valve driving wheel is sixty to one, increasing the upward torque of the rack valve and reducing the stroke to achieve the purpose of valve opening and closing.

[0028] A mechanical wire-pulling displacement warning sensor of the present invention not only avoids the problems that the battery needs to be regularly charged during the long-term operation of the product, the data changes greatly each time it is disassembled, the construction site environment is complex, and it is difficult to feedback the data in time when the data transmission effect is poor in windy, sandy, rainy and cloudy weather, but also ensures an excellent warning effect on the actual on-site operators when the product data is fed back to the background. At the same time, it also has the characteristics of convenient installation and batch production. The displacement gauge has a simple structure and low processing cost, and is suitable for batch manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of a mechanical wire-pulling displacement warning sensor according to an embodiment of the present invention.

[0030] Figure 2 It is a perspective structure diagram of the main housing and related components.

[0031] Figure 3 It is a schematic diagram of the driving shaft assembly and related structures.

[0032] Figure 4 It is a schematic diagram of the first-stage driven shaft assembly and related structures.

[0033] Figure 5 It is a schematic diagram of the second-stage driven shaft assembly and related structures.

[0034] Figure 6 It is a schematic diagram of the pointer shaft assembly and related structures.

[0035] Figure 7 It is a schematic diagram of the third-stage driven shaft assembly and related structures.

[0036] In the attached drawings, the list of components represented by each reference numeral is as follows: 1 - outer housing, 2 - bottom plate, 3 - first support plate, 4 - second support plate, 5 - wire reel protection plate, 6 - first horizontal support plate, 7 - second horizontal support plate, 8 - third horizontal support plate, 9 - dial, 10 - pointer, 11 - gas tank, 12 - rack valve, 13 - driving shaft assembly, 131 - driving shaft, 132 - wire reel, 133 - scroll spring, 134 - first-stage driving spur gear, 14 - first-stage driven shaft assembly, 141 - first-stage driven shaft, 142 - first-stage driven spur gear, 143 - worm, 15 - second-stage driven shaft assembly, 151 - second-stage driven shaft, 152 - second-stage driving spur gear, 153 - worm gear, 154 - driving bevel gear, 16 - pointer shaft assembly, 161 - pointer shaft, 162 - second-stage driven spur gear, 17 - third-stage driven shaft assembly, 171 - third-stage driven shaft, 172 - driven bevel gear, 173 - third-stage driving spur gear. Detailed implementation manners

[0037] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant attached drawings. Embodiments of the present application are shown in the attached drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0039] Aiming at the deficiencies of the above technologies, the purpose of the present invention is to provide a mechanical alarm-disabled displacement sensor to solve the problem that the monitoring effect of traditional displacement gauges is poor due to the complex working conditions at the construction site.

[0040] Refer to Figures 1-7 , a mechanical wire-pulling displacement warning sensor, including a support module, a display and warning module, and a transmission module, characterized in that:

[0041] In a specific embodiment, the support module includes an outer housing 1, a bottom plate 2, a first support plate 3, a second support plate 4, a wire reel protection plate 5, a first horizontal support plate 6, a second horizontal support plate 7, and a third horizontal support plate 8; the display and warning module includes a dial 9, a pointer 10, a gas tank 11, and a rack valve 12; the transmission module includes a driving shaft assembly 13, a first-stage driven shaft assembly 14, a second-stage driven shaft assembly 15, a pointer shaft assembly 16, and a third-stage driven shaft assembly 17.

[0042] In this embodiment, the wire reel protection plate 5, the first horizontal support plate 6, the second horizontal support plate 7, and the third horizontal support plate 8 are installed between the first support plate 3 and the second support plate 4 to play a role in fixing and supporting the overall device. The two sides of the air tank 11 are provided with openings to fix the first support plate 3 and the second support plate 4, and the lower opening is fixed to the bottom plate 2 to fix the overall device as a whole. The connections at the above-mentioned places can be integrally formed, can be welded, or can be threadedly connected, etc.

[0043] In this embodiment, the main shaft assembly 13, the first-level driven shaft assembly 14, and the second-level driven shaft assembly 15 are installed between the first support plate 3 and the second support plate 4 using ball bearings. The third-level driven shaft assembly 17 is installed between the first horizontal support plate 6 and the third horizontal support plate 8 using ball bearings and passes through the second horizontal support plate 7. The pointer shaft assembly 16 and the pointer 10 are installed on the first horizontal support plate 6 and pass through the housing 1 for display on the dial 9. It is possible to physically zero the device dial by rotating the dial orientation.

[0044] In this embodiment, the main shaft assembly 13 includes a main shaft 131, a wire reel 132, a scroll spring 133, and a first-level driving spur gear 134. Among them, the main shaft 131 is press-fitted with the wire reel 132 and the first-level driving spur gear 134 through interference fit and can withstand a certain degree of torque. The connection between the main shaft 131 and the scroll spring 133 can be welded or can be threadedly connected, etc.

[0045] The first-level driven shaft assembly 14 includes a first-level driven shaft 141, a first-level driven spur gear 142, and a worm 143. Among them, the driven shaft 141 is press-fitted with the first-level driven spur gear 142 through interference fit and can withstand a certain degree of torque. The connection between the driven shaft 141 and the worm 143 can be welded or can be threadedly connected, etc., and it needs to withstand a relatively large torque.

[0046] The second-level driven shaft assembly 15 includes a second-level driven shaft 151, a second-level driving spur gear 152, a worm gear 153, and a driving bevel gear 154. Among them, the driven shaft 151 is press-fitted with the second-level driving spur gear 152, the worm gear 153, and the driving bevel gear 154 through interference fit and can withstand a certain degree of torque.

[0047] The pointer shaft assembly 16 includes a pointer shaft 161 and a second-level driven spur gear 162, and the two are connected by a riveting method.

[0048] The third-level driven shaft assembly 17 includes a third-level driven shaft 171, a driven bevel gear 172, and a third-level driving spur gear 173. Among them, the third-level driven shaft 171 is press-fitted with the driven bevel gear 172 and the third-level driving spur gear 173 through interference fit and can withstand a certain degree of torque.

[0049] In this embodiment, a circlip can be selectively used to fix the secondary driven shaft 151 and the second support plate 4 at both ends of their junction for axial positioning, and a circlip can also be selectively used to fix the pointer shaft 161 and the inner side of the housing 1 for axial positioning

[0050] In this embodiment, the shape of the main wire reel 132 is adapted to the shape of the wire reel protection plate 5, and the shape of the volute spring 133 is adapted to the convex part of the second support plate 4. During the wire winding process, the cable and the convex part of the second support plate 4 are pressed against each other to achieve the effect of tight wire arrangement.

[0051] In this embodiment, the diameter of the first-stage driving spur gear 134 is smaller than that of the first-stage driven spur gear 142, and the tooth profile part of the first-stage driving spur gear 134 meshes with the tooth profile part of the first-stage driven spur gear 142; the tooth profile part of the worm 143 meshes with the tooth profile part of the worm gear 153.

[0052] The diameter of the second-stage driving spur gear 152 is larger than that of the second-stage driven spur gear 162, and the tooth profile part of the second-stage driving spur gear 152 meshes with the tooth profile part of the second-stage driven spur gear 162.

[0053] The diameter of the driving bevel gear 154 is the same as that of the driven bevel gear 172, and the tooth profile part of the driving bevel gear 154 meshes with the tooth profile part of the bevel gear 172; the tooth profile part of the third-stage driving spur gear 173 meshes with the tooth profile part of the rack valve 12.

[0054] In this embodiment, an external force pulls the wire rope of the pull wire to drive the wire reel 132 to rotate. Due to the interference fit, the main shaft assembly 13 rotates simultaneously, and the volute spring 133 is compressed to store energy. Through the engagement of the first-stage driving spur gear 134 and the first-stage driven spur gear 142, the first-stage driving spur gear 134 has a module of 0.6 and 20 teeth; the first-stage driven spur gear 142 has a module of 0.6 and 40 teeth, and its angular velocity transmission ratio is two to one, driving the first-stage driven shaft assembly 14 to rotate. Through the engagement of the worm 143 and the worm gear 153, the worm 143 has a module of 0.5 and a length of 8 mm; the worm gear 153 has a module of 0.5 and 30 teeth, and its angular velocity transmission ratio is thirty to one, and this drives the second-stage driven shaft assembly 15 to rotate. At this time, through the engagement between the second-stage driving spur gear 155 and the second-stage driven spur gear 162, the second-stage driving spur gear 155 has a module of 0.6 and 40 teeth; the second-stage driven spur gear 162 has a module of 0.6 and 10 teeth, and its angular velocity transmission ratio is one to four, and this drives the pointer shaft assembly 16 to rotate, generating a change in the pointer rotation. The angular velocity transmission ratio between the pull rope and the pointer is fifteen to one, achieving the effect that when the steel wire rope is completely pulled out, the dial rotates one circle. At the same time, the width of the wire reel is fifteen times the diameter of the steel wire rope, and theoretically, it can wind the wire fifteen circles to clearly indicate the value; at the same time, the driving bevel gear 154 on the second-stage driven shaft assembly 15 engages with the driven bevel gear 172, the driving bevel gear 154 has a module of 1 and 14 teeth; the driven bevel gear 172 has a module of 1 and 14 teeth, and its angular velocity transmission ratio is one to one, and this drives the third-stage driven shaft assembly 17 to rotate. At this time, the third-stage driving spur gear 173 drives the rack valve 12 to move axially, generating the effect of the gas tank 11 spraying colored gas powder for warning. All the above-mentioned gears, worm gears and worms are standard teeth, which are convenient to purchase and replace.

[0055] The rack valve 12 is made of rubber and acts as a valve switch through the third horizontal support plate 8 to guide the gas tank 11.

[0056] The structure of the present invention is simple, the processing cost is low, it is suitable for mass production, and the strength of the equipment is guaranteed to a great extent.

[0057] Through high-precision mechanical transmission, the actual displacement situation is fed back in real time on site, and an alarm system is designed. The mechanical structure without electricity can adapt to a more severe environment to solve the problem that it is difficult to use existing displacement sensors in the actual working environment with the characteristics of long-term monitoring required, difficult installation and replacement, and difficult signal transmission.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mechanical wire displacement warning sensor, comprising a support module, a display and warning module, and a transmission module, characterized in that: The support module comprises an outer shell (1), a bottom plate (2), a first support plate (3), a second support plate (4), a wire drum protection plate (5), a first transverse support plate (6), a second transverse support plate (7), and a third transverse support plate (8); The display and warning module comprises a dial (9), a pointer (10), a gas tank (11), and a rack valve (12); The transmission module comprises a driving shaft assembly (13), a primary driven shaft assembly (14), a secondary driven shaft assembly (15), a pointer shaft assembly (16), and a tertiary driven shaft assembly (17).

2. A mechanical wire displacement warning sensor according to claim 1, characterized in that: The wire drum protection plate (5), the first transverse support plate (6), the second transverse support plate (7), and the third transverse support plate (8) are installed between the first support plate (3) and the second support plate (4).

3. A mechanical wire displacement warning sensor according to claim 1, characterized in that: The gas tank (11) has openings on both sides for fixing the first support plate (3) and the second support plate (4), and a hole at the bottom for fixing the bottom plate (2) to fix the entire device into one piece.

4. The mechanical wire displacement warning sensor according to claim 1, characterized in that: The driving shaft assembly (13), the first-stage driven shaft assembly (14), and the second-stage driven shaft assembly (15) are installed between the first support plate (3) and the second support plate (4); the third-stage driven shaft assembly (17) is installed between the first transverse support plate (6) and the third transverse support plate (8) through a bearing and passes through the second transverse support plate (7); the pointer shaft assembly (16) and the pointer (10) are installed on the first transverse support plate (6) and pass through the housing (1) to be displayed on the dial (9).

5. The mechanical wire displacement warning sensor according to claim 1, characterized in that: The driving shaft assembly (13) comprises a driving shaft (131), a wire drum (132), a spiral spring (133), and a first-stage driving spur gear (134); the first-stage driven shaft assembly (14) comprises a first-stage driven shaft (141), a first-stage driven spur gear (142), and a worm rod (143); the second-stage driven shaft assembly (15) comprises a second-stage driven shaft (151), a second-stage driving spur gear (152), a worm gear (153), and a driving bevel gear (154); the pointer shaft assembly (16) comprises a pointer shaft (161) and a second-stage driven spur gear (162); and the third-stage driven shaft assembly (17) comprises a third-stage driven shaft (171), a driven bevel gear (172), and a third-stage driving spur gear (173).

6. A mechanical wire displacement early warning sensor according to claim 5, characterized in that: The shape of the main wire drum (132) is adapted to the shape of the wire drum protection plate (5), and the spiral spring (133) is adapted to the shape of the outer convex part of the second support plate (4).

7. The mechanical wire displacement warning sensor according to claim 5, characterized in that: The diameter of the primary driving spur gear (134) is smaller than the diameter of the primary driven spur gear (142); the tooth profile of the primary driving spur gear (134) meshes with the tooth profile of the primary driven spur gear (142); the tooth profile of the worm (143) meshes with the tooth profile of the worm wheel (153); The diameter of the secondary driving spur gear (152) is greater than the diameter of the secondary driven spur gear (162), and the tooth profile of the secondary driving spur gear (152) is meshed with the tooth profile of the secondary driven spur gear (162); The diameter of the active bevel gear (154) is the same as that of the driven bevel gear (172); the tooth profile of the active bevel gear (154) meshes with the tooth profile of the bevel gear (172); and the tooth profile of the three-stage active spur gear (173) meshes with the tooth profile of the rack valve (12).

8. The mechanical wire displacement warning sensor according to claim 7, characterized in that: The first-stage active spur gear (134) has 0.6 modulus 20 teeth; the first-stage driven spur gear (142) has 0.6 modulus 40 teeth; the worm (143) has 0.5 modulus 8 millimeters in length; the worm wheel (153) has 0.5 modulus 30 teeth; the second-stage active spur gear (152) has 0.6 modulus 40 teeth; the second-stage driven spur gear (162) has 0.6 modulus 10 teeth; the active bevel gear (154) has 14 teeth; the driven bevel gear (172) has 14 teeth; the third-stage active spur gear (173) has 0.6 modulus 20 teeth.

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