A performance detection device for a construction hoist anti-falling device

Abstract

The present invention relates to a performance detection device for a construction hoist anti-falling device, which includes a fixed platform and an impact motor. The impact motor is arranged on the fixed platform. An impact simulation roller is provided on the output shaft of the impact motor. Contact rollers distributed circumferentially are connected to the impact simulation roller through brackets. A machine base is provided on the side wall of the fixed platform. A brake plate is provided on the machine base. A brake pawl and a trigger gear in the same position as in actual operation are rotatably provided on the machine base. A limit detector is provided on the brake plate near the brake pawl. Multiple groups of nozzles are provided on the machine base. The present invention can simulate the action of the trigger gear by the impact simulation roller when the cage is running, adjust the rotation speed of the impact simulation roller through the impact motor, simulate the impact effects under different states of the cage, so as to simulate and detect the comprehensive performance of each component in actual use. The nozzles can spray corresponding acid and alkali liquids on the trigger gear and the brake pawl to simulate the actual working condition environment.

Description

Technical Field

[0001] The invention belongs to the technical field of anti - falling devices, and specifically refers to a performance detection device for the anti - falling device of a construction elevator. Background Technique

[0002] The anti - falling device of a construction elevator is a mechanical safety protection device that can prevent the cage of a construction elevator from falling and ensure the safety of personnel and equipment. When the downward speed of the cage of a construction elevator is within the calibrated speed range, the anti - falling device will not interfere with the normal downward movement of the cage, allowing the cage to fall smoothly; when the downward speed of the cage exceeds the calibrated range, such as when the cage experiences a rapid fall or brake failure, the anti - falling device will limit the speed reduction of the cage, force the cage to stop, and restore the cage to the normal speed reduction.

[0003] Therefore, the reliability of the anti - falling device is a major matter related to construction safety and must be treated with caution. The anti - falling device mainly includes a machine base, a trigger gear, and a brake pawl. Currently, the detection of the anti - falling device mainly focuses on the material mechanical properties of the above - mentioned components and cannot truly simulate the actual working conditions. When the anti - falling device is in use, the load in the cage, the cooperation performance of each component, and the harsh working condition environment will all affect the reliability of the anti - falling device. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the invention provides a performance detection device for the anti - falling device of a construction elevator, which at least partially solves the above problems.

[0005] The technical solution adopted by the invention is as follows: A performance detection device for the anti - falling device of a construction elevator proposed by the invention includes a fixed platform and an impact motor, and the impact motor is arranged on the fixed platform.

[0006] Further, an impact simulation roller is arranged on the output shaft of the impact motor, and the impact simulation roller rotates with the impact motor.

[0007] Further, contact rollers distributed in a circumferential pattern are connected to the impact simulation roller through brackets, and the contact roller brackets are rotatably connected.

[0008] Further, momentum adjustment disks are symmetrically arranged on the impact simulation roller, jacks are arranged in an array on the momentum adjustment disks, and momentum adjustment rollers are detachably installed in the jacks.

[0009] Further, a machine base is arranged on the side wall of the fixed platform, a brake pawl and a trigger gear in the same position as in actual operation are rotatably arranged on the machine base, and the trigger gear is in contact with the contact roller.

[0010] Further, a brake plate is arranged on the machine base. In order to make the brake pawl return to its initial position, a torsion spring is connected between the rotating shaft of the brake pawl and the brake plate, and the brake pawl will reset under the action of the torsion spring after rotating a certain angle.

[0011] Further, a limit detector is provided near the brake pawl on the brake plate, and the limit detector is used to detect whether the brake plate blocks the brake pawl.

[0012] Further, a plurality of groups of nozzles are provided on the machine base, and the nozzles spray liquid onto the brake pawl and the trigger gear.

[0013] Further, the limit detector includes an induction nozzle, an induction contact and a sealing ball. The induction nozzle is disposed through the brake plate. The induction contact slides in the inner cavity at the lower end of the induction nozzle. The sealing ball slides in the inner cavity at the upper end of the induction nozzle. A compression spring is connected between the sealing ball and the induction nozzle. The upper end of the induction contact contacts the sealing ball. The induction nozzle protruding outside the brake plate is disposed close to the outer edge of the limit contact on the brake plate. When the brake pawl reaches the limit contact, it will be forced to stop, and the brake pawl will cross the limit contact and trigger the induction contact.

[0014] Further, in order to judge whether the induction contact moves during the high-speed rotation detection, a lifting chamber is provided in the middle of the induction nozzle. An upward-opening ball groove is provided at the upper end of the lifting chamber. The sealing ball has the same ball diameter as the ball groove. Air leakage ports are circumferentially arranged on the side wall of the lifting chamber. Air channels are circumferentially arranged at the upper end of the induction contact, and the air channels can communicate with the air leakage holes at the current position at different positions.

[0015] Further, a vertical plate is vertically provided on the machine base. The brake plate is disposed on the vertical plate. A vertical plate is provided on the lower wall of the brake plate, and the vertical plate is perpendicular to the vertical plate. A plurality of groups of the nozzles are provided on the vertical plate.

[0016] Further, the trigger gear is rotatably disposed at the edge of the vertical plate, and the brake pawl is rotatably disposed in the middle of the side wall of the vertical plate.

[0017] The beneficial effects obtained by the present invention are as follows: The impact simulation roller can simulate the action on the trigger gear when the cage runs. By adjusting the speed of the impact simulation roller through the impact motor or adjusting the roller by increasing or decreasing the momentum, the impact effects on the trigger gear in different load states or at different speeds of the cage are simulated, so as to simulate and detect the comprehensive performance of each component during actual use. The nozzles can spray corresponding acid and alkali liquids onto the trigger gear and the brake pawl to simulate the actual working condition environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0019] Figure 2 It is a front view of an embodiment of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the impact simulation roller;

[0021] Figure 4 For the positional structures of the components on the machine base Figure 1 ;

[0022] Figure 5 For the positional structures of the components on the machine base Figure 2 ;

[0023] Figure 6 Cross-sectional view of the positional relationship between the limit detector and the brake pawl;

[0024] Figure 7 Cross-sectional view of the limit detector;

[0025] Figure 8 For Figure 6 The enlarged view of part I in

[0026] Figure 9 Structural schematic diagram of the induction nozzle.

[0027] Among them, 1. Fixed table, 2. Impact motor, 3. Impact simulation roller, 4. Limit detector, 5. Machine base, 6. Nozzle, 7. Trigger gear, 8. Brake pawl, 9. Bracket, 10. Contact roller, 11. Momentum adjustment disk, 12. Jack, 13. Momentum adjustment roller, 14. Vertical plate, 15. Brake plate, 16. Vertical board, 17. Torsion spring, 18. Induction nozzle, 19. Induction contact, 20. Sealing ball, 21. Compression spring, 22. Air passage, 23. Air leakage port, 24. Lifting bin, 25. Ball groove.

[0028] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] As Figure 1 and Figure 2 shown, a performance detection device for a construction hoist anti-falling device proposed by the present invention includes a fixed platform 1 and an impact motor 2. The fixed platform 1 is used to simulate the wall surface when the anti-falling device is installed, and the impact motor 2 is arranged on the fixed platform 1.

[0032] An impact simulation roller 3 is arranged on the output shaft of the impact motor 2. The impact simulation roller 3 rotates with the impact motor 2. The impact simulation roller 3 has kinetic energy when rotating, and this kinetic energy is used to simulate the kinetic energy when the cage descends, so as to impact and detect the anti-falling device.

[0033] As Figure 3 shown, contact rollers 10 distributed circumferentially are connected to the impact simulation roller 3 through a bracket 9. The contact rollers 10 are rotatably connected to the bracket 9. The contact rollers 10 are in contact and cooperate with the anti-falling device. The contact rollers 10 have a certain moment of inertia and are used to simulate the impact theory generated when contacting the anti-falling device.

[0034] Momentum adjustment discs 11 are symmetrically arranged on the impact simulation roller 3. Jacks 12 are arranged in an array on the momentum adjustment discs 11. Momentum adjustment rollers 13 are detachably installed in the jacks 12. If only the rotational speed of the impact motor 2 is changed to adjust the impact kinetic energy, due to the weight limitation of the impact simulation roller 3 itself, there will be certain limitations in the range of the tested kinetic energy. At this time, by adding momentum adjustment rollers 13 on the momentum adjustment discs 11, the overall weight of the impact simulation roller 3 can be adjusted, so as to realize a large-range adjustment of the impact kinetic energy and comprehensively detect the service performance of the anti-falling device.

[0035] A machine base 5 is arranged on the side wall of the fixed platform 1. A braking pawl 8 and a trigger gear 7 in the same position as in actual operation are rotatably arranged on the machine base 5. The braking pawl 8 and the trigger gear 7 are the main functional components of the anti-falling device. After assembly, the braking pawl 8 and the trigger gear 7 can rotate and mesh, which is the same as the state when the anti-falling device actually works. The trigger gear 7 is in contact with the contact roller 10.

[0036] A brake plate 15 is provided on the machine base 5. When the brake pawl 8 rotates counterclockwise under the action of the trigger gear 7, that is, when simulating the state of each component in the anti-falling device when the cage moves upward, the brake pawl 8 will not contact the brake plate 15 due to the change in rotational speed; when the brake pawl 8 rotates clockwise under the action of the trigger gear 7, that is, when imitating the operating state of each component in the anti-falling device when the cage moves downward, if the rotational speed of the trigger gear 7 is within the set range, the brake pawl 8 will not contact the brake plate 15. If the rotational speed of the trigger gear 7 exceeds the set range, at this time, the brake pawl 8 will rotate to the limit position of the brake plate 15 and be limited and blocked by the brake plate 15. The brake pawl 8 cannot continue to rotate, and the resistance received by the brake pawl 8 will be transmitted to the trigger gear 7 and further transmitted to the contact roller 10 to detect whether the impact simulation roller 3 is effectively decelerated when rotating at high speed; in order to make the brake pawl 8 return to its initial position, a torsion spring 17 is connected between the rotating shaft of the brake pawl 8 and the brake plate 15. After the brake pawl 8 rotates a certain angle, it will reset under the action of the torsion spring 17.

[0037] As Figure 1 and Figure 2 shown, a limit detector 4 is provided on the brake plate 15 near the brake pawl 8. The limit detector 4 is used to detect whether the brake plate 15 blocks the brake pawl 8. When the brake plate 15 fails under the impact of the brake pawl 8, the brake pawl 8 will cross the limit contact point (i.e., the limit position) of the brake plate 15 and contact the limit detector 4, thereby triggering an alarm to determine whether the anti-falling device fails during the high-speed rotation detection process.

[0038] As Figure 4 shown, multiple groups of nozzles 6 are provided on the machine base 5. Different acidic liquids, alkaline liquids or water can be connected to each group of nozzles 6 as needed. The nozzles 6 will spray liquids onto the brake pawl 8 and the trigger gear 7 to simulate the existing working conditions during construction to be closer to the actual state of the anti-falling device.

[0039] As Figure 6 and Figure 7 shown, the limit detector 4 includes an induction nozzle 18, an induction contact 19 and a sealing ball 20. The induction nozzle 18 is penetrated and provided on the brake plate 15. The induction contact 19 is slidably provided in the lower inner cavity of the induction nozzle 18. The sealing ball 20 is slidably provided in the upper inner cavity of the induction nozzle 18. A compression spring 21 is connected between the sealing ball 20 and the induction nozzle 18. The upper end of the induction contact 19 contacts the sealing ball 20. The compression spring 21 always pushes the sealing ball 20 outward. The sealing ball 20 will also push the induction contact 19 outward, making the induction contact 19 protrude from the outside of the brake plate 15. As Figure 8As shown, the induction nozzle 18 protruding from the outside of the brake plate 15 is arranged close to the outer edge of the limit contact on the brake plate 15. When the brake plate 15 of the anti-falling device works effectively, the brake pawl 8 will be forced to stop when it reaches the limit contact. When the brake plate 15 of the anti-falling device fails, the brake pawl 8 will cross the limit contact and trigger the induction contact 19, thereby judging the working state of the current anti-falling device.

[0040] In order to judge whether the induction contact 19 moves during the high-speed rotation detection, as Figure 9 shown, a constant-pressure gas is connected to the upper end of the induction nozzle 18. There is a lifting chamber 24 in the middle of the induction nozzle 18. There is a ball groove 25 with an upward opening at the upper end of the lifting chamber 24. The sealing ball 20 has the same ball diameter as the ball groove 25. The side wall of the lifting chamber 24 is provided with air leakage ports 23 in a circumferential array. The upper end of the induction contact 19 is provided with air channels 22 in a circumferential array. The air channels 22 can be connected to the air leakage holes at the current position at different positions; when the induction contact 19 contracts into the induction nozzle 18 under the pressure of the brake pawl 8, the induction contact 19 pushes up the sealing ball 20 against the thrust of the compression spring 21, causing a gap to appear between the sealing ball 20 and the ball groove 25. The gas in the inner cavity of the induction nozzle 18 flows out to the outside of the air leakage port 23 through the air channel 22. At this time, the pressure of the constant-pressure gas in the induction nozzle 18 changes, so as to quickly judge whether the anti-falling device fails.

[0041] As Figures 4 - 6 shown, a vertical plate 14 is vertically arranged on the machine base 5. The brake plate 15 is arranged on the vertical plate 14. A vertical plate 16 is provided on the lower wall of the brake plate 15. The vertical plate 16 is perpendicular to the vertical plate 14. Multiple groups of nozzles 6 are arranged on the vertical plate 14.

[0042] The trigger gear 7 is rotatably arranged at the edge of the vertical plate 16, and the brake pawl 8 is rotatably arranged in the middle of the side wall of the vertical plate 16.

[0043] During specific operation, the machine base 5 is installed on the fixed platform 1, and then the trigger gear 7 and the brake pawl 8 are assembled on the vertical plate 16 on the machine base 5 according to their actual installation positions. After assembly, the trigger gear 7 and the brake pawl 8 can rotate and engage with each other. At the same time, the trigger gear 7 can also engage with the contact roller 10 on the impact simulation roller 3.

[0044] Then, the momentum adjustment roller 13 is selected and installed as needed to increase the weight of the entire impact simulation roller 3. When the impact simulation roller 3 rotates, its rotational kinetic energy also increases synchronously to simulate the kinetic energy generated during the downward movement of the cage. When it is necessary to simulate the impact effects at different rotational speed states, the rotational speed of the impact motor 2 can be changed to achieve this, so that the impact simulation roller 3 rotates rapidly.

[0045] When the impact simulation roller 3 rotates rapidly, the contact roller 10 intermittently contacts the trigger gear and drives the trigger gear 7 to rotate. After the trigger gear 7 rotates, it drives the brake pawl 8 to rotate. By adjusting the rotation direction of the impact motor 2, the rotation direction of the brake pawl 8 can be changed. When the brake pawl 8 rotates clockwise, it simulates the movement state when the simulated cage moves downward.

[0046] If the rotation speed of the trigger gear 7 is within the set range, the brake pawl 8 rotates intermittently with the trigger gear 7. When the current engaging tooth on the trigger gear 7 separates from the brake pawl 8 and the next engaging tooth has not reached, the brake pawl 8 will quickly return to its initial position under the action of the torsion spring 17 and contact and drive with the next engaging tooth of the trigger gear 7. If the rotation speed of the trigger gear 7 exceeds the set range, the brake pawl 8 will contact the next engaging tooth of the trigger gear 7 before returning to its initial position and thus be further pushed. When the brake pawl 8 continues to rotate, it will contact the brake plate 15, and the brake plate 15 exerts a resistance on the brake pawl 8. This resistance is transmitted to the impact simulation roller 3 through the trigger gear 7, thereby completing the speed reduction of the impact simulation roller 3.

[0047] During the above speed reduction process, if the pressure of the sensing nozzle 18 in the limit detector 4 is normal, it indicates that the brake plate 15 is always working properly and the brake pawl 8 has not broken through the limit contact of the brake plate 15.

[0048] If the brake plate 15 fails, after the brake pawl 8 breaks through the limit contact of the brake plate 15, the engaging tooth of the brake pawl 8 contacts the sensing contact 19. The sensing contact 19 is compressed and contracted, pushing the sealing ball 20 to move upward. A gap appears between the sealing ball 20 and the ball groove 25, and the constant-pressure gas in the sensing nozzle 18 quickly flows out through the air duct 22 and the air release port 23. The gas in the sensing nozzle 18 loses pressure and alarms, thereby quickly judging the failure of the brake plate 15, and the anti-falling device generates an abnormality under the action of this impact kinetic energy.

[0049] During the above detection process, different liquids can be sprayed from the nozzle 6 as needed to simulate the working environment at the construction site. This liquid is sprayed onto the brake plate 15, the trigger gear 7, and the brake pawl 8. This liquid can be acidic liquid, alkaline liquid, or neutral water body, accelerating the erosion of the surface of the parts, thereby simulating the reliability of the anti-falling device under harsh working conditions.

[0050] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0051] The above describes the present invention and its embodiments, and this description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the spirit of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A construction hoist fall arrester performance testing device, comprising a fixed platform (1) and an impact motor (2), wherein the impact motor (2) is arranged on the fixed platform (1), and is characterized in that: Also includes: An impact simulation roller (3) is disposed on the output shaft of the impact motor (2) and is configured to rotate along with the impact motor (2), wherein the impact simulation roller (3) is connected to circumferentially distributed contact rollers (10) via a bracket (9); A machine base (5) is arranged on a side wall of the fixed platform (1), a brake plate (15) is arranged on the machine base (5), a brake pawl (8) and a trigger gear (7) are rotatably arranged on the machine base (5), a torsion spring (17) is connected between the rotating shaft of the brake pawl (8) and the brake plate (15), and the trigger gear (7) is in intermittent contact with the contact roller (10); A limit detector (4), comprising a sensing nozzle (18), a sensing contact (19) and a sealing ball (20), wherein the sensing nozzle (18) is disposed through the brake plate (15), the sensing contact (19) is slidably disposed in the inner cavity at the lower end of the sensing nozzle (18), the sealing ball (20) is slidably disposed in the inner cavity at the upper end of the sensing nozzle (18), a compression spring (21) is connected between the sealing ball (20) and the sensing nozzle (18), the upper end of the sensing contact (19) is in contact with the sealing ball (20), the sensing nozzle (18) is close to the outer edge of the upper limit contact disposed on the brake plate (15), the braking pawl (8) is forced to stop when it reaches the limit contact, and the braking pawl (8) will trigger the sensing contact (19) when it crosses the limit contact; A nozzle (6) is provided on the machine base (5) and is used for spraying liquid onto the brake pawl (8) and the trigger gear (7).

2. The construction hoist anti-fall device performance detection equipment according to claim 1 is characterized in that: The impact simulation roller (3) is symmetrically provided with a momentum adjustment disk (11), the momentum adjustment disk (11) is provided with an array of insertion holes (12), and the momentum adjustment roller (13) is detachably mounted in the insertion holes (12).

3. The construction hoist anti-fall device performance detection equipment according to claim 1 is characterized in that: A lifting bin (24) is provided in the middle of the induction nozzle (18), a ball groove (25) opening upward is provided at the upper end of the lifting bin (24), the sealing ball (20) and the ball groove (25) have the same ball diameter, and a venting port (23) is provided in a circumferential array on the side wall of the lifting bin (24).

4. The construction hoist anti-fall device performance detection equipment according to claim 2 is characterized in that: An air channel (22) is provided in a circumferential array at the upper end of the induction contact (19), and the air channel (22) at different positions can be connected to the air leakage hole at the current position.

5. The construction hoist anti-fall device performance testing equipment according to claim 1 is characterized in that: A longitudinal plate (14) is vertically provided on the machine base (5), the brake plate (15) is provided on the longitudinal plate (14), a vertical plate (16) is provided on the lower wall of the brake plate (15), and the vertical plate (16) is arranged perpendicular to the longitudinal plate (14).

6. The construction hoist anti-fall device performance testing device according to claim 5 is characterized in that: A plurality of groups of nozzles (6) are arranged on the longitudinal plate (14), and each nozzle (6) can spray the same or different liquids as required.

7. The construction hoist anti-fall device performance testing device according to claim 6 is characterized in that: The trigger gear (7) is rotatably disposed on the edge of the vertical plate (16), and the braking pawl (8) is rotatably disposed on the middle of the side wall of the vertical plate (16).

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