A device for ensuring correct use of a safety arrestor

Abstract

The utility model relates to a kind of ensure correct use device of safety anti-falling device. Including pivot and the two speed measuring rollers of being installed in the both ends of pivot, support is installed between the middle part of pivot and main lock tongue;Microswitch for detecting the front and rear swing position of support is installed in the shell;Pressure sensor is also installed in the inside of shell, and presser foot is equipped in the middle part side of main lock tongue, when main lock tongue is lifted upward, presser foot contacts pressure sensor;Wheel seat pivot with front end having lower wheel seat and rear end having knob is installed in the bottom of shell, and lock pin mechanism for locking and releasing wheel seat pivot, pivot anti-reverse mechanism is equipped between the middle part of wheel seat pivot and shell, and lock pin mechanism includes lock pin and sliding seat and is equipped with lock pin anti-reverse mechanism between both of them.The utility model provides a kind of ensure correct use device of safety anti-falling device, ensure that safety anti-falling device is correctly installed and applied, guarantee the anti-falling safety of staff when using free-climbing device.

Description

Technical Field

[0001] This utility model belongs to the field of safety device technology, and in particular relates to a device for ensuring the correct use of a safety fall arrestor. Background Technology

[0002] Currently, various high-altitude operations and high-altitude transportation operations require lifting platforms (climb-free platforms), such as those used in wind turbine towers. When using climb-free platforms in wind turbine towers, workers are required to use fall arresters (or fall arrest sliders that move along the climb-free platform's track). The working principle of the fall arrester is: in the event of a rapid fall, the safety mechanism on the fall arrester is triggered, the fall arresting latch pops out and engages with the climb-free platform's track, preventing further descent and avoiding injury or death. However, in actual work, it has been found that fall arresters are not used correctly, including: the fall arrester is installed backwards on the climb-free platform's track, and the worker's safety rope is not connected to the climb-free platform. When fall arresters are not used correctly, they will fail to provide safety protection against falls.

[0003] In summary, it is necessary to develop and design devices to ensure correct use and apply them to existing fall arrestor products. By ensuring the correct use of fall arrestors, the safety of workers using non-climbing devices can be guaranteed. Summary of the Invention

[0004] The purpose of this utility model is to provide a device to ensure the correct use of a safety fall arrestor, ensuring that the safety fall arrestor is installed and applied correctly, and protecting the fall safety of workers when using the fall arrestor.

[0005] The technical solution adopted by this utility model is as follows: a device for ensuring the correct use of a safety fall arrestor, including a rotating shaft and two speed measuring rollers installed at both ends of the rotating shaft, a bracket installed between the rotating shaft and the middle of the main locking tongue; a micro switch for detecting the back-and-forth swing position of the bracket is installed inside the housing; a pressure sensor is also installed inside the housing, and a pressure tenon is provided on the side of the middle of the main locking tongue. When the main locking tongue is raised upward, the pressure tenon contacts the pressure sensor; a wheel seat rotating shaft with a lower wheel seat at the front end and a knob at the rear end is installed at the bottom of the housing, and a locking pin mechanism for locking and releasing the wheel seat rotating shaft is provided. A rotating shaft anti-reverse mechanism is provided between the middle of the wheel seat rotating shaft and the housing. The locking pin mechanism includes a locking pin and a slide, and a locking pin anti-reverse mechanism is provided between the two.

[0006] Preferably, a signal transmitter is installed on the side of the housing. The signal transmitter consists of a housing, a circuit board and a battery located inside the housing. The circuit board includes a processor module, an analog-to-digital converter module and a wireless transmission module. The pressure sensor is connected to the signal transmitter, and the signal transmitter sends the pressure signal to the controller of the crawl-free device.

[0007] Preferably, a waterproof connector is provided on the side of the housing, the cable connected to the micro switch passes through the waterproof connector and has a magnetic plug at the end of the cable, the magnetic plug being connected to the magnetic socket of the crawl-free controller.

[0008] Preferably, the anti-reverse mechanism of the rotating shaft includes a hemispherical groove disposed inside the housing and above the middle part of the wheel seat rotating shaft, and a complete ball groove disposed on the middle side wall of the wheel seat rotating shaft. An anti-reverse steel ball is provided in the complete ball groove. When the fall arrestor is installed in reverse, the anti-reverse steel ball falls into the hemispherical groove of the housing, preventing the wheel seat rotating shaft from rotating.

[0009] Preferably, the anti-reverse locking mechanism includes a hemispherical groove located in the middle of the bottom of the locking pin and a complete ball groove located at the top of the middle of the slide block. An anti-reverse locking steel ball is provided in the complete ball groove. When the fall arrestor is installed in reverse, the anti-reverse locking steel ball falls into the hemispherical groove of the locking pin, preventing the locking pin from moving back and forth.

[0010] Preferably, the locking pin mechanism further includes a spring. When the locking pin is pressed forward, the locking pin overcomes the elastic force of the spring and moves forward along the slide. When the locking pin is released, the locking pin moves backward to reset under the action of the spring's restoring elastic force.

[0011] The advantages and positive effects of this utility model are as follows: This utility model provides a device to ensure the correct use of a safety fall arrestor. Compared with existing safety fall arrestors, this device for ensuring correct use adopts multiple technical means to ensure that the safety fall arrestor can be correctly installed and applied. Correct installation refers to anti-reverse installation and correct connection with the track of the fall arrestor. Correct application refers to establishing a connection with the worker's safety rope, that is, the fall arrestor is correctly worn by the worker. Through the aforementioned measures, the correct installation and application of the safety fall arrestor is ensured, thus guaranteeing the fall safety of workers when using the fall arrestor.

[0012] The anti-reverse installation measures consist of a rotating shaft anti-reverse mechanism and a locking pin anti-reverse mechanism. When the fall arrestor is incorrectly installed in reverse, these mechanisms prevent the rotating shaft from rotating and the locking pin from moving, rendering the fall arrestor unusable. Reliable connection with the climb-free track is achieved by detecting the fore-and-aft swing position of the support using a microswitch. Reliable connection with the worker's safety rope is achieved through a clamping tenon and pressure sensor. All safety measures are structurally sound and operate reliably. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention, from the upper rear view. Figure 2 This is a three-dimensional structural schematic diagram of the present invention, from the lower rear view. Figure 3 This is a three-dimensional structural schematic diagram of the present invention, from the lower front view. Figure 4This is a cross-sectional structural diagram of the anti-reverse mechanism of the rotating shaft and the anti-reverse mechanism of the locking pin in this utility model.

[0014] In the picture: 1. Housing; 2. Main locking tongue; 3. Secondary locking tongue; 4. Upper wheel seat; 5. Micro switch; 6. Bracket; 7. Speed ​​measuring roller; 8. Lower rear roller; 9. Lower front roller; 10. Lower wheel seat; 11. Wheel seat shaft; 12. Knob; 13. Locking pin mechanism; 13-1. Locking pin; 13-2. Spring; 13-3. Slide; 14. Shaft anti-reverse steel ball; 15. Upper front roller; 16. Pressure sensor; 17. Tenon; 18. Locking pin anti-reverse steel ball. Detailed Implementation

[0015] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0016] Please see Figure 1 and Figure 2 The safety fall arrestor of this utility model includes a rotating shaft and two speed-measuring rollers 7 installed at both ends of the rotating shaft. A bracket 6 is installed between the rotating shaft and the main locking tongue 2. The rotating shaft is installed in the upper middle part of the fall arrestor's housing 1 (the housing 1 is formed by the combination of a left housing and a right housing; only the left housing is shown in the figure to illustrate the internal structure, and the right housing is not shown). The speed-measuring rollers 7 are integrated with the rotating shaft. When the safety fall arrestor is correctly installed on the non-climbing track, the two speed-measuring rollers 7 should be reliably engaged with the track. In this way, when the fall arrestor moves along the track, the linear velocity of the speed-measuring rollers 7 is equal to the moving speed of the fall arrestor.

[0017] like Figure 1 As shown, the lower end of the bracket 6 is hinged to the middle of the main locking tongue 2. Therefore, the speed measuring roller 7 and its rotating shaft can swing forward or backward around the hinge position with the main locking tongue 2. When the fall arrestor is correctly installed on the non-climbing device track, the bracket 6 swings backward due to the backward squeezing action of the track on the speed measuring roller 7. It also includes a secondary locking tongue 3. The upper part of the secondary locking tongue 3 is centered on the aforementioned rotating shaft, so the lower part can swing outward. The lower front end of the main locking tongue 2 abuts against the lower end of the secondary locking tongue 3. Therefore, when the exposed section of the main locking tongue 2 is pulled downward, due to the lever principle, the front part of the main locking tongue 2 squeezes the lower part of the secondary locking tongue 3 forward, causing the lower part of the secondary locking tongue 3 to swing forward. When it swings to a certain angle, the secondary locking tongue 3 hooks onto the non-climbing device track, preventing the fall arrestor from descending further along the track, thus achieving the effect of preventing a fall. The above describes the operating principle of the safety fall arrestor.

[0018] A microswitch 5 (i.e., a contact switch) is installed inside the housing 1 to detect the forward and backward swing position of the support 6. As mentioned earlier, when the safety fall arrestor is correctly installed and used on the non-climbing device track, the track exerts a backward squeezing force on the speed measuring roller 7, causing the support 6 to swing backward. At this time, the microswitch 5 is triggered, generating a trigger signal. This trigger signal is used as a judgment signal to determine whether the fall arrestor is correctly installed on the non-climbing device track.

[0019] Please see Figure 3 It can be seen that: A pressure sensor 16 is also installed inside the housing 1. A retaining tenon 17 is provided on the middle side of the main locking tongue 2. When the main locking tongue 5 is raised, the retaining tenon 17 contacts the pressure sensor 16, generating a pressure detection signal. This signal is used to determine whether the worker's safety rope has established a reliable connection with the fall arrestor. The principle is as follows: After the worker's safety rope is connected to the main locking tongue 2, the fall arrestor is released. Under its own weight, the fall arrestor slides down the track until the safety rope is taut. At this time, the outer end of the main locking tongue 2 is subjected to the upward tension of the safety rope, and its retaining tenon 17 will press against the pressure sensor 16, generating a pressure signal. When the fall arrestor is not worn correctly by the worker, the main locking tongue 2 will not be subjected to the upward tension, and therefore the pressure sensor 16 will not be pressed by the retaining tenon 17, and no pressure signal will be generated.

[0020] In this embodiment, a signal transmitter is installed on the side of the housing 1. The signal transmitter consists of a housing, a circuit board and a battery located inside the housing. The circuit board includes a processor module, an analog-to-digital converter module and a wireless transmission module. The pressure sensor 16 is connected to the signal transmitter, and the signal transmitter sends the pressure signal to the controller of the crawl-free device.

[0021] In this embodiment, a waterproof connector is provided on the side of the housing 1. The cable connected to the micro switch 5 passes through the waterproof connector and has a magnetic plug at the end of the cable. The magnetic plug is connected to the magnetic socket of the crawl-free device controller. The switching signal of the micro switch 5 is sent to the crawl-free device controller through the cable, the magnetic plug and the magnetic socket.

[0022] Therefore, the signal used to determine whether the safety fall arrestor has been correctly installed and applied is sent by the signal transmitter and received by the controller of the fall arrestor. The controller of the fall arrestor is set to determine that the fall arrestor has been properly installed and applied only when it simultaneously receives the switching signal of the micro switch 5 and the pressure signal of the pressure sensor 16. Only then can the fall arrestor be started. Otherwise, the fall arrestor cannot be started and operated, thereby ensuring the safety of the staff.

[0023] Please see Figure 1 and Figure 4 It can be seen that: At the bottom of the housing 1 is a wheel seat axle 11 with a lower wheel seat 10 at the front end and a knob 12 at the rear end, and a locking pin mechanism 13 for locking and releasing the wheel seat axle 11. A shaft anti-reverse mechanism is provided between the middle of the wheel seat axle 11 and the housing 1. The locking pin mechanism 13 includes a locking pin 13-1 and a slide 13-3, with a locking pin anti-reverse mechanism between them. When the fall arrestor is installed backwards (i.e., reversed before installation), the locking pin anti-reverse mechanism prevents the locking pin 13-1 from moving back and forth along the slide 13-3, thus preventing locking and unlocking actions. At the same time, when the fall arrestor is installed backwards, the shaft anti-reverse mechanism prevents the wheel seat axle 11 from rotating, thus preventing installation onto the non-climbing device track.

[0024] In this embodiment, the anti-reverse mechanism includes a hemispherical groove disposed within the housing 1, above the center of the wheel seat shaft 11, and a complete spherical groove disposed on the side wall of the center of the wheel seat shaft 11. An anti-reverse steel ball 14 is disposed within the complete spherical groove. When the fall arrestor is installed backwards, the anti-reverse steel ball 14 falls into the hemispherical groove of the housing 1, preventing the wheel seat shaft 11 from rotating. The hemispherical groove is a hemispherical groove in shape, and only half of the anti-reverse steel ball 14 can fall into it. The complete spherical groove is a groove capable of accommodating the entire anti-reverse steel ball 14. When the anti-reverse steel ball 14 falls into the hemispherical groove, it is positioned between the housing 1 and the wheel seat shaft 11, preventing the wheel seat shaft 11 from rotating.

[0025] In this embodiment, the anti-reverse locking mechanism includes a hemispherical groove located at the bottom center of the locking pin 13-1 and a complete ball groove located at the top center of the slide block 13-3. An anti-reverse locking steel ball 18 is disposed within the complete ball groove. When the fall arrestor is installed in reverse, the anti-reverse locking steel ball 18 falls into the hemispherical groove of the locking pin 13-1, preventing the locking pin 13-1 from moving forward or backward. The hemispherical groove refers to a groove shaped like a hemisphere, where only half of the anti-reverse locking steel ball 18 can fall. The complete ball groove is a groove capable of accommodating the entire anti-reverse locking steel ball 18. When the anti-reverse locking steel ball 18 falls into the hemispherical groove, it is positioned between the locking pin 13-1 and the slide block 13-3, preventing the locking pin 13-1 from moving forward or backward.

[0026] The locking mechanism 13 also includes a spring 13-2. When the locking pin 13-1 is pressed forward, the locking pin 13-1 overcomes the elastic force of the spring 13-2 and moves forward along the slide block 13-3. When the locking pin 13-1 is released, under the action of the restoring elastic force of the spring 13-2, the locking pin 13-1 moves backward to reset. Figure 3 and Figure 4 As shown, the top of the locking pin 13-1 is located in the locking groove on the wheel seat shaft 11. The locking groove is wider at the front and narrower at the back. When the top of the locking pin 13-1 moves to the back of the locking groove, the wheel seat shaft 11 cannot rotate. When the top of the locking pin 13-1 moves to the front of the locking groove, the wheel seat shaft 11 can rotate.

[0027] An upper wheel seat 4 and an upper front roller 15 are fixedly installed on the top of the housing 1. After the fall arrestor is installed on the non-climbing device track, the track is located between the upper front roller 15 and the speed measuring roller 7. A lower front roller 9 is installed on the lower wheel seat 10, and a lower rear roller 8 is also installed on the lower part of the housing 1. After the fall arrestor is installed on the non-climbing device track, the track is located between the lower front roller 9 and the lower rear roller 8.

[0028] The principle to ensure correct use: 1. The anti-reverse mechanism of the rotating shaft and the anti-reverse mechanism of the locking pin play the role of preventing reverse installation. Before installation on the track of the non-climbing device, if the fall arrestor is held in reverse by the staff, the anti-reverse mechanism of the locking pin restricts the movement of the locking pin 13-1 back and forth, and the locking pin mechanism 13 cannot be operated to release the wheel seat rotating shaft 11. At the same time, the anti-reverse mechanism of the rotating shaft restricts the rotation of the wheel seat rotating shaft 11. At this time, the fall arrestor cannot be installed on the track of the non-climbing device and cannot be put into use. This ensures that the fall arrestor is installed on the track in the correct posture.

[0029] 2. The micro switch 5 is used to detect whether the installation is correct. When the fall arrestor is correctly installed on the track of the non-climbing device, the speed measuring roller 7 and its bracket 6 swing backward at a certain angle. At this time, the micro switch 5 is triggered and a switching signal is generated. This signal is sent to the controller of the non-climbing device.

[0030] 3. Pressure sensor 16 detects whether the device is worn correctly. When the safety rope of the worker standing on the climbing device is correctly connected to the fall arrestor and the fall arrestor is released, the fall arrestor descends along the climbing device track under its own weight. Eventually, the safety rope is taut, and the outer end of the main locking tongue 2 is pulled upward. The locking tenon 17 contacts the pressure sensor 16, generating a pressure signal. This pressure signal is sent to the controller of the climbing device via a signal transmitter. The controller of the climbing device will only allow the climbing device to start operating when it receives both the aforementioned switch signal and pressure signal.

Claims

1. A device for ensuring the correct use of a fall arrestor, characterized in that: The device includes a rotating shaft and two speed measuring rollers (7) installed at both ends of the rotating shaft. A bracket (6) is installed between the rotating shaft and the main locking tongue (2). A micro switch (5) for detecting the back-and-forth swing position of the bracket (6) is installed inside the housing (1). A pressure sensor (16) is also installed inside the housing (1). A tenon (17) is provided on the side of the middle part of the main locking tongue (2). When the main locking tongue (2) is raised, the tenon (17) contacts the pressure sensor (16). A wheel seat rotating shaft (11) with a lower wheel seat (10) at the front end and a knob (12) at the rear end is installed at the bottom of the housing (1). A locking pin mechanism (13) for locking and releasing the wheel seat rotating shaft (11) is provided between the middle part of the wheel seat rotating shaft (11) and the housing (1). The locking pin mechanism (13) includes a locking pin (13-1) and a slide (13-3), and a locking pin anti-reverse mechanism is provided between the two.

2. The device for ensuring the correct use of the safety fall arrester as described in claim 1, characterized in that: A signal transmitter is installed on the side of the housing (1). The signal transmitter consists of a housing, a circuit board and a battery located inside the housing. The circuit board includes a processor module, an analog-to-digital converter module and a wireless transmission module. The pressure sensor (16) is connected to the signal transmitter. The signal transmitter sends the pressure signal to the controller of the crawl-free device.

3. The device for ensuring the correct use of the safety fall arrestor as described in claim 2, characterized in that: A waterproof connector is provided on the side of the housing (1). The cable connected to the micro switch (5) is passed through the waterproof connector and a magnetic plug is provided at the end of the cable. The magnetic plug is connected to the magnetic socket of the crawl-free controller.

4. The device for ensuring the correct use of the safety fall arrestor as described in claim 3, characterized in that: The anti-reverse mechanism of the rotating shaft includes a hemispherical groove located inside the housing (1) above the middle part of the wheel seat rotating shaft (11) and a complete ball groove located on the middle side wall of the wheel seat rotating shaft (11). An anti-reverse steel ball (14) is provided in the complete ball groove. When the fall arrestor is installed in reverse, the anti-reverse steel ball (14) falls into the hemispherical groove of the housing (1), preventing the wheel seat rotating shaft (11) from rotating.

5. The device for ensuring the correct use of the safety fall arrester as described in claim 4, characterized in that: The anti-reverse locking mechanism includes a hemispherical groove located in the middle of the bottom of the locking pin (13-1) and a complete ball groove located at the top of the middle of the slide block (13-3). An anti-reverse locking steel ball (18) is provided in the complete ball groove. When the fall arrestor is installed in reverse, the anti-reverse locking steel ball (18) falls into the hemispherical groove of the locking pin (13-1), preventing the locking pin (13-1) from moving back and forth.

6. The device for ensuring the correct use of the safety fall arrester as described in claim 5, characterized in that: The locking mechanism (13) also includes a spring (13-2). When the locking pin (13-1) is pressed forward, the locking pin (13-1) overcomes the elastic force of the spring (13-2) and moves forward along the slide (13-3). When the locking pin (13-1) is released, under the action of the reset elastic force of the spring (13-2), the locking pin (13-1) moves backward to reset.

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