Detection test bed

Abstract

The invention relates to a detection test bench, which comprises a safety lock detection device, and the safety lock detection device comprises a rack which comprises a base and a top frame; and a counterweight. The safety lock detection device further comprises a pulley. A roll-over stand; the upper end part of the guide rope is fixed on the pulley, the lower end part of the guide rope is fixed on the overturning frame, the safety lock detection device can be switched between a folded state and a detection state, and in the folded state, the safety lock can be detected by the guide rope. The pulley slides to a storage position in the rack, and the overturning frame is overturned to a folding position in the rack; in the detection state, the tackle slides to the sliding-out position where the tackle extends out of the machine frame, the overturning frame is overturned to the unfolding position where the overturning frame is overturned out of the machine frame, and the guide rope is tightened in the vertical direction in the detection state. Therefore, the detection test bench which is compact in structure and light in weight is provided.

Description

Technical Field

[0001] The present application relates to a testing bench, in particular to a testing bench comprising a safety lock testing device capable of testing a safety lock. Background Art

[0002] In the construction industry, vertical transportation equipment such as elevators and overhead work platforms are crucial for ensuring construction efficiency. With the continuous increase in building height and the increasing complexity of construction processes, the safety performance of these devices is directly related to the safety of construction workers and project progress. Safety locks and safety devices are crucial safety features of these devices, and their technological advancement directly determines their ability to provide safety in unexpected and dangerous working conditions.

[0003] A safety lock is a mechanical or mechatronic device installed near the basket's suspension mechanism (hoist) or on an independent support. Its primary function is to instantly trigger and lock onto the safety rope if the platform experiences an abnormal descent or excessive descent due to any reason (such as a traction rope break, hoisting device failure, or excessive platform tilt angle). This prevents the platform from falling and protects the workers inside. Safety locks are categorized by their operating principle: swing-arm anti-tilt and centrifugal trigger. The swing-arm anti-tilt safety lock features a rope angle detection mechanism. When the basket tilts or the traction rope breaks or slackens, the angle of the rope detection mechanism changes, triggering an actuator to activate the rope locking mechanism, locking the basket. For the centrifugal trigger safety lock, when the basket's descent speed exceeds a certain value, the centrifugal force generated by the flyweight overcomes the spring's restraining force and swings it outward to a certain extent. This triggers the waiting actuator, triggering the rope locking mechanism and locking the lock weight to the safety rope.

[0004] The safety device, also known as a fall arrester, is the most important safety feature on rack and pinion construction hoists. It limits the cage from overspeeding and preventing it from falling. The safety device primarily consists of a brake gear, a centrifugal speed limiter, a braking mechanism, and a loading mechanism. The brake gear meshes with the hoist's guide rack, and the speed limiter monitors the hoist's operating speed. When the hoist reaches the safety device's operating speed, the centrifugal block in the speed limiter opens, rotating the brake mechanism and generating braking force. During the braking process, the loading mechanism gradually increases the braking force until the target stops falling.

[0005] With the rapid development of the construction industry, performance requirements for safety locks and safety devices are becoming increasingly stringent. Relevant safety standards and regulations clearly stipulate that these safety devices must be regularly inspected and calibrated to ensure they meet safety requirements. For example, the construction industry standard GB / T34025, "Progressive Gear Fall Protection Devices for Construction Hoists," stipulates that safety devices on construction hoists must only be used within their valid inspection period, which must not exceed one year. GB / T19155, "Suspended Baskets for Height Work," stipulates that safety locks must be inspected annually. Construction site environments are complex and volatile, and equipment is frequently used. Safety locks and safety devices are susceptible to various factors, leading to performance degradation. Therefore, regular inspection of these safety devices is necessary to ensure they remain in good working order and thus ensure safety on the construction site. However, traditional inspection equipment is bulky, heavy, and difficult to move, making it unsuitable for inspecting safety locks and safety devices on the construction site. Furthermore, inspecting safety locks and safety devices requires two completely different sets of equipment, resulting in high inspection costs. Summary of the Invention

[0006] The purpose of the present application is to provide a test bench that can be used to test safety locks. Compared with traditional testing equipment, the test bench is significantly smaller in size, lighter and easier to move.

[0007] One aspect of the present application is to provide a detection test bench, which includes a safety lock detection device that can be used to detect a safety lock, and the safety lock detection device includes: a frame, the frame including a base and a top frame; and a counterweight, the counterweight is suspended on the frame by means of a traction rope and can be lifted by means of a lifting device, and the safety lock to be tested can be installed on the counterweight. The safety lock detection device also includes: a pulley, which can be slidably supported on the top frame of the frame; a flip frame, which can be flipped and supported on the base of the frame; and a guide rope, which passes through the counterweight to guide the counterweight, wherein the upper end of the guide rope is fixed to the pulley and the lower end of the guide rope is fixed to the flip frame, wherein the safety lock detection device can switch between a folded state and a detection state, wherein: in the folded state, the pulley slides to a storage position located inside the frame and the flip frame flips to a folded position located inside the frame; in the detection state, the pulley slides to a sliding position extending from the frame and the flip frame flips to a deployed position flipped out from the frame, and the guide rope is tightened in the vertical direction in the detection state, so that the detection of the safety lock can be implemented.

[0008] Here, the counterweight plays the role of simulating an elevator or a cage or a hanging basket. In traditional testing equipment, it is usually necessary to set a fixed guide rail for the counterweight to guide the counterweight to move up and down stably. However, such a fixed guide rail makes the height of the inspection equipment very high, and the guide rail is usually made of very heavy steel material, which makes the entire testing equipment bulky and very heavy. Such testing equipment is not suitable for movement, so it is usually set up in a fixed testing site. In order to test the safety lock or safety device, the safety lock or safety device must be brought from the construction site to the testing site, and then brought back from the testing site to the construction site after the test is completed, which is very troublesome. In the detection test bench, the fixed guide rail for guiding the counterweight is omitted, and instead a flexible guide rope is provided for the counterweight. The upper and lower ends of the guide rope are respectively fixed to a sliding pulley and a flipping frame that can flip. Therefore, when the pulley slides to the storage position inside the frame and the flipping frame flips to the folding position inside the frame, the detection test bench is in a folded state, and the guide rope is stored together inside the frame and is no longer tightened. At this time, there is no need to guide the counterweight. In the folded state, the detection test bench occupies a smaller volume space. Since the guide rope is used instead of the fixed guide rail, such a detection test bench is relatively light and easy to move, and is suitable for being transported to the required construction site by transportation tools. When the pulley slides to the sliding position extending from the frame and the flip frame flips to the unfolded position flipped out from the frame, the guide rope is tightened in the vertical direction under the detection state. At this time, the guide rope serves as the guide rail of the counterweight, so that the counterweight can move up and down along the guide rope reliably and stably.

[0009] Optionally, the safety lock detection device further comprises a safety rope, the upper end of which is fixed to the pulley and the lower end of which is capable of passing through the safety lock to be detected. When the counterweight falls at an excessive speed, the safety lock can be triggered so that the safety lock can be locked to the safety rope.

[0010] Optionally, the safety lock detection device further includes a pressure sensor arranged on the pulley, and the upper end of the safety rope is fixed to the pulley via the pressure sensor, wherein the pressure sensor is used to measure the braking force of the safety lock when detecting the safety lock.

[0011] Optionally, the safety lock detection device further includes a safety rope locking device, and the lower end of the safety rope can be fixed to the turnover frame by means of the safety rope locking device.

[0012] Optionally, the safety lock detection device further includes a shock-absorbing device disposed on the tilting frame, configured to cushion the falling counterweight in the event of a safety lock failure. If the safety lock fails and the counterweight continues to fall, the shock-absorbing device can cushion the fall, preventing damage to the counterweight and, ultimately, the entire test bench. Optionally, the shock-absorbing device comprises a spring member sleeved over the guide rope.

[0013] Optionally, the safety lock detection device further comprises a displacement sensor arranged on the pulley, and the displacement sensor is used to measure the braking distance of the safety lock when detecting the safety lock.

[0014] Optionally, the displacement sensor is a cable displacement sensor, the free end of the cable of which is fixed to the counterweight, thereby enabling the braking distance of the safety lock to be measured in a simple manner.

[0015] Optionally, a slide rail is arranged on the top frame of the machine frame, and the trolley is slidably supported on the top frame of the machine frame by means of the slide rail.

[0016] Optionally, a pulley limiting member is arranged on the top frame of the rack, and the pulley limiting member defines the storage position and the slide-out position of the pulley and / or prevents the pulley from turning over.

[0017] Optionally, the traction rope transmits force to the counterweight and the lifting device via a pulley set, and the pulley set includes at least a fixed pulley and a movable pulley, wherein the fixed pulley is fixed on the pulley above the counterweight, and the movable pulley is supported in a movable pulley guide device so as to be movably horizontally by means of a movable pulley connecting member, and the movable pulley guide device is fixed on the pulley or the top frame.

[0018] Optionally, the safety lock detection device further includes a decoupling mechanism, comprising a hook pin secured to the movable pulley connector; a hook connector; a hook hinged to the hook connector and preloaded by a tension spring such that when the hook moves toward and collides with the hook pin, the hook pin engages the hook; a decoupling mechanism drive capable of horizontally moving the hook toward or away from the hook pin via the hook connector; and a trigger pin positioned in the hook's travel path such that when the hook is moved into contact with the trigger pin, the hook pivots, under the driving force of the decoupling mechanism drive, through the trigger pin, overcoming the preload of the tension spring, thereby decoupling the hook from the hook pin. Optionally, the trigger pin is disposed on the movable pulley guide. Optionally, the decoupling mechanism drive is secured to the trolley or the top frame.

[0019] In traditional testing equipment, the decoupling mechanism typically operates in a vertical direction, requiring the entire testing equipment to occupy a relatively high vertical height, making the testing equipment bulky and heavy, and inconvenient to transport. The above arrangement of the pulley block and the decoupling mechanism allows the decoupling mechanism to operate horizontally, significantly reducing the height of the testing bench. Furthermore, the entire decoupling mechanism is concealed within the frame, increasing the compactness of the testing bench.

[0020] Optionally, the safety lock detection device further includes an activation device. When the hook pin is engaged with the draw hook and the draw hook is moved into contact with the trigger pin, the activation device is compressed by the movable pulley or the movable pulley connector. This activates the movable pulley and the movable pulley connector when the draw hook is unhooked from the draw hook pin. Optionally, the activation device is formed by a spring. When the draw hook is unhooked from the draw hook pin, the activation device ejects the movable pulley and the movable pulley connector, causing the traction rope used to pull the counterweight to immediately slacken. Optionally, the activation device is disposed on the movable pulley guide. Providing this activation device is particularly advantageous for detecting swing-arm anti-tilt safety locks. When the traction rope is normally pulling the counterweight, the taut traction rope interacts with the swing arm of the safety lock, unlocking the safety lock. Once the traction rope is slack, the swing arm of the safety lock rapidly actuates, driving the locking block to lock onto the safety rope, preventing the counterweight from falling.

[0021] Optionally, the safety lock detection device further includes a buffer device, configured to block and buffer the movable pulley and the movable pulley connector when the safety lock fails. Optionally, the buffer device is disposed on the movable pulley guide device. Optionally, the buffer device is formed by a spring member. The buffer device can prevent the movable pulley and the movable pulley connector from violently colliding with the movable pulley guide device or the frame when the safety lock fails, driven by the counterweight, thereby increasing the service life of the detection device.

[0022] Optionally, the safety lock detection device further includes a pulley driving device, which is used to make the pulley slide between the storage position and the slide-out position.

[0023] Optionally, the safety lock detection device further includes a flip frame driving device, and the flip frame driving device is used to flip the flip frame between the folded position and the unfolded position.

[0024] Optionally, the pulley driving device and / or the turning frame driving device and / or the lifting device are fixed on the frame.

[0025] Optionally, a guide wheel is arranged on the counterweight, and the guide rope passes through the counterweight via the guide wheel. The guide wheel can reduce the wear caused by the mutual friction between the counterweight and the guide rope, thereby increasing the service life of the test bench, especially its guide rope and counterweight.

[0026] Optionally, the detection test bench further includes a safety device detection device capable of detecting a safety device, wherein the safety device detection device is fixed to the base inside the frame, and a safety device can be installed and detected in the safety device detection device, wherein the safety device detection device is arranged so that its axial direction is perpendicular to or parallel to the sliding direction of the pulley. Thus, a safety lock detection device and a safety device detection device are integrated into the detection test bench, that is, the detection test bench can be used not only to detect safety locks, but also to detect safety devices. Moreover, since the safety device detection device is located inside the frame, it does not need to occupy additional space.

[0027] Optionally, the safety lock detection device further includes a locking pin, which can lock the counterweight to the frame when the safety lock detection device is in the retracted state. Thus, when the safety lock detection device is in the retracted state, the weight of the counterweight can be primarily borne by the locking pin, without subjecting the traction rope to prolonged tensile stress, thereby increasing the service life of the traction rope.

[0028] Optionally, the detection test bench also includes a movable carriage, and the frame is installed in the carriage. Since the detection test bench is arranged as a whole in a movable carriage, it can be conveniently transported to the required construction site with the help of transportation tools. In order to address the problem that existing detection equipment is only fixed and cannot be quickly deployed on site, the present application realizes the motorized operation of the detection equipment through a vehicle-mounted modular structure and an automatic retractable mechanism. The carriage can be directly loaded onto a vehicle for transportation to meet the on-site detection needs of the construction site, thereby solving the problem of rapid on-site detection of safety locks and significantly improving the timeliness of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following will further describe the embodiments of the present application in conjunction with the accompanying drawings, but those skilled in the art will appreciate that these drawings are only for the purpose of explaining the embodiments and should not be used to limit the scope of the present application. Figure 1 is a schematic diagram of a detection test bench in a detection state according to an embodiment of the present application; Figure 2 is a schematic diagram of a detection test bench in a folded state according to an embodiment of the present application; Figure 3 is another schematic diagram of the detection test bench in a detection state according to one embodiment of the present application; Figure 4 is a schematic diagram of a decoupling mechanism of a safety lock detection device of a test bench according to an embodiment of the present application; and Figure 5 yes Figure 4 A partial enlarged view of area A in FIG.

[0030] List of reference numerals: 1. uncoupling mechanism drive device; 2. frame; 3. slide rail; 4. pulley drive device; 5. pulley limiter; 6. pulley; 7. displacement sensor; 8. pressure sensor; 9. guide rope clamp; 10. safety lock; 11. counterweight; 12. guide rope; 13. safety rope; 14. shock absorbing device; 15. safety rope locking device; 16. flip frame; 17. locking pin; 18. flip frame drive device; 19. base; 20. traction rope; 21. fixed pulley; 22. safety device detection device; 23. hook connector; 24. hook; 25. movable pulley; 26. movable pulley guide device; 27. tensioning spring; 28. trigger pin; 29. ​​hook pin; 30. hinge; 31. guide wheel; 32. carriage; 33. starting device; 34. buffer device; 35. movable pulley connector. DETAILED DESCRIPTION

[0031] The detection test bench of the present application is further described in detail below with reference to the accompanying drawings, but the present application is not limited to the exemplary embodiments shown.

[0032] Figure 1 A schematic diagram of a detection test bench in a detection state according to an embodiment of the present application is shown. Figure 2 A schematic diagram of a detection test bench in a folded state according to an embodiment of the present application is shown, and Figure 3 Another schematic diagram of the test bench in the test state according to one embodiment of the present application is shown. Figures 1 to 3 As can be clearly seen in the figure, the test bench includes a movable carriage 32. Furthermore, the test bench includes a safety lock detection device capable of testing the safety lock 10. The safety lock detection device comprises a frame 2 mounted within the carriage 32. Since the test bench is entirely housed within the movable carriage 32, it can be conveniently transported to the required construction site. The carriage 32 can be directly loaded onto a vehicle for transportation, meeting the requirements of on-site testing. This solves the challenge of rapid on-site testing of the safety lock 10 and significantly improves the timeliness of testing. The frame 2 includes a base 19 and a top frame. Furthermore, the safety lock detection device includes a counterweight 11, which is suspended from the frame 2 by a traction rope 20 and can be lifted by a lifting device (not shown). The safety lock 10 to be tested can be mounted on the counterweight 11. The lifting device can, for example, be fixed to the frame 2.

[0033] The safety lock detection device further includes a trolley 6, which is slidably supported on the top frame of the rack 2. To this end, a slide rail 3 is arranged on the top frame of the rack 2, and the trolley 6 is slidably supported on the top frame of the rack 2 by means of the slide rail 3. Here, the trolley 6 can slide between a storage position located inside the rack 2 and a slide-out position extending from the rack 2. Figure 1 In FIG. 1 , the trolley 6 is shown to have slid into the slide-out position extending from the frame 2, while in FIG. Figure 2It is shown in the figure that the pulley 6 has slid into the storage position inside the frame 2. In order to limit the sliding path of the pulley 6, a pulley limiter 5 is arranged on the top frame of the frame 2. The pulley limiter 5, on the one hand, limits the storage position and the slide-out position of the pulley 6, and on the other hand, prevents the pulley 6 from flipping over, so that the pulley 6 can slide smoothly on the frame 2. In order to drive the pulley 6, the safety lock detection device also includes a pulley drive device 4, which is used to make the pulley 6 slide between the storage position and the slide-out position. Here, the pulley drive device 4 can be composed of an electric cylinder or a pneumatic cylinder, for example. However, the pulley drive device 4 is not limited to this. Any drive device in the prior art that can drive the pulley 6 to perform a sliding motion can be used as the pulley drive device 4. The pulley drive device 4 can be fixed on the frame 2, for example.

[0034] The safety lock detection device further comprises a tilting frame 16, which is tiltably supported on a base 19 of the frame 2. The tilting frame 16 can be tilted between a folded position located inside the frame 2 and an unfolded position tilted out from the frame 2. Figure 1 In FIG. 1 , the turning frame 16 is shown to have been turned over to the unfolded position turned out from the frame 2 , while in FIG. Figure 2 It is shown in the figure that the flip frame 16 has been flipped to the folded position inside the frame 2. In order to drive the flip frame 16, the safety lock detection device also includes a flip frame driving device 18, and the flip frame driving device 18 is used to flip the flip frame 16 between the folded position and the unfolded position. Here, the flip frame driving device 18 can be composed of an electric cylinder or a pneumatic cylinder, for example. However, the flip frame driving device 18 is not limited to this. Any driving device in the prior art that can drive the flip frame 16 to perform a flipping motion can be used as the flip frame driving device 18. Figure 1 and Figure 2 It can be clearly seen in FIG. 1 that the tilting frame drive 18 can also be fixed to the machine frame 2 .

[0035] The safety lock detection device further includes a guide rope 12, which passes through the counterweight 11 to guide the counterweight 11. To this end, the upper end of the guide rope 12 is fixed to the pulley 6 and the lower end of the guide rope 12 is fixed to the turning frame 16. Figures 1 to 3In the embodiment shown, the upper end of the guide rope 12 is fixed to the pulley 6 by means of a guide rope clamp 9. However, the upper end of the guide rope 12 can also be fixed to the pulley 6 in other ways. The lower end of the guide rope 12 can also be fixed to the turning frame 16 in any known way. The safety lock detection device can be in the retracted state (see Figure 2 ) and detection status (see Figure 1 ), in the retracted state, the pulley 6 slides to the storage position inside the frame 2 and the flip frame 16 flips to the folded position inside the frame 2; in the detection state, the pulley 6 slides to the slide-out position extending from the frame 2 and the flip frame 16 flips to the unfolded position flipped out from the frame 2, and the guide rope 12 is tightened in the vertical direction in the detection state, so that the detection of the safety lock 10 can be implemented. The safety lock detection device also includes a locking pin 17, which can lock the counterweight 11 on the frame 2 in the retracted state of the safety lock detection device. As a result, in the retracted state of the safety lock detection device, the weight of the counterweight 11 can be mainly borne by the locking pin 17, without making the traction rope 20 under tensile stress for a long time, thereby increasing the service life of the traction rope 20. At the same time, the counterweight 11 is prevented from shaking in the retracted state because the guide rope 12 cannot be used to guide the counterweight 11 at this time. In the embodiment shown in the figure, especially from Figure 3 It can be clearly seen that the safety lock detection device includes a total of two guide ropes 12. However, it should be noted that this is merely exemplary, and the number of guide ropes 12 in the safety lock detection device may be different from two, as long as the counterweight 11 can be stably guided. When the guide ropes 12 are tightened in the vertical direction, the guide ropes 12 serve as guide rails for the counterweight 11, whereby the counterweight 11 can stably move up and down along the tightened guide ropes 12. In order to protect the guide ropes 12 and the counterweight 11 and reduce their wear, it is advantageous to arrange a guide wheel 31 on the counterweight 11, and the guide rope 12 passes through the counterweight 11 via the guide wheel 31. As a result, the guide rope 12 does not interact directly with the counterweight 11, but interacts with the guide wheel 31, thereby avoiding wear caused by mutual friction between the guide rope 12 and the counterweight 11.

[0036] Especially from Figure 3It can be clearly seen that the safety lock detection device further includes a shock absorbing device 14 arranged on the flip frame 16, and the shock absorbing device 14 is used to cushion the falling counterweight 11 when the safety lock 10 fails. When the safety lock 10 fails and causes the counterweight 11 to continue to fall, the counterweight 11 can be cushioned by the shock absorbing device 14, avoiding damage to the counterweight 11 and even the entire detection test bench. Figure 3 In the embodiment shown, the damping device 14 is formed by a spring element, in particular a helical spring, which is mounted on the guide rope 12 .

[0037] In order to detect the safety lock 10, the safety lock detection device also includes a safety rope 13, the upper end of the safety rope 13 is fixed to the pulley 6 and the lower end of the safety rope 13 can pass through the safety lock 10 to be detected. The safety lock detection device also includes a pressure sensor 8 arranged on the pulley 6, and the upper end of the safety rope 13 is fixed to the pulley 6 via the pressure sensor 8. Here, the pressure sensor 8 can be used to measure the braking force of the safety lock 10 when detecting the safety lock 10. In order to keep the safety rope 13 stable, a safety rope locking device 15 can also be provided, and the lower end of the safety rope 13 can be fixed to the flip frame 16 with the aid of the safety rope locking device 15. This prevents the safety rope 13 from swinging at will. In some embodiments, the safety rope locking device 15 can also be omitted, so that the lower end of the safety rope 13 remains free. In addition, the safety lock detection device also includes a displacement sensor 7 arranged on the pulley 6, and the displacement sensor 7 is used to measure the braking distance of the safety lock 10 when detecting the safety lock 10. In particular, it can be seen from Figure 3 As can be clearly seen in the figure, the displacement sensor 7 is a cable displacement sensor, the free end of the cable of which is fixed to the counterweight 11. Thus, during the detection process, the braking distance of the safety lock 10 is measured by measuring the length of the cable pulled by the counterweight 11 during braking. However, this is merely exemplary; any other type of displacement sensor 7 may also be used to measure the braking distance of the safety lock 10.

[0038] Figure 4 A schematic diagram of a decoupling mechanism of a safety lock detection device of a test bench according to an embodiment of the present application is shown. Figure 5 Shown Figure 4 A partial enlarged view of area A in the figure. Figure 4 and Figure 5As can be clearly seen in the figure, to pull the counterweight 11, the traction rope 20 connects the counterweight 11 to the lifting device (not shown) via a pulley assembly. The pulley assembly includes at least a fixed pulley 21 and a movable pulley 25. The fixed pulley 21 is fixed to the trolley 6 above the counterweight 11, and the movable pulley 25 is supported horizontally and movably in a movable pulley guide 26 via a movable pulley connector 35. The movable pulley guide 26 can be fixed to the trolley 6. However, it should be noted that the movable pulley guide 26 can also be fixed to the top frame. In order to detect the safety lock 10, the safety lock detection device includes a decoupling mechanism, which includes: a hook pin 29, which is fixed to the movable pulley connecting member 35; a hook connecting member 23; a hook 24, which is hinged to the hook connecting member 23 by means of a hinge 30 and is pre-tensioned by a tensioning spring 27, so that when the hook 24 moves toward the hook pin 29 and collides with the hook pin 29, the hook pin 29 can be hooked into the hook 24; and a decoupling mechanism driving device. 1, the unhooking mechanism driving device 1 is capable of moving the hook 24 in the horizontal direction toward or away from the hook pin 29 via the hook connector 23; and a trigger pin 28, the trigger pin 28 is located in the moving path of the hook 24, so that when the hook 24 is moved to contact the trigger pin 28, the hook 24 is pivoted by the trigger pin 28 under the driving force of the unhooking mechanism driving device 1 to overcome the preload force of the tensioning spring 27, so that the hook 24 is unhooked from the hook pin 29. Here, the unhooking mechanism driving device 1 can be composed of an electric cylinder or a pneumatic cylinder, for example. However, the unhooking mechanism driving device 1 is not limited thereto, and any driving device in the prior art that can drive the hook connector 23 to move the hook 24 in the horizontal direction toward or away from the hook pin 29 can be used as the unhooking mechanism driving device 1. From Figure 4 and Figure 5 It can be clearly seen that the trigger pin 28 is arranged on the movable pulley guide device 26. Figure 1 and Figure 2 It can be clearly seen in the figure that the decoupling mechanism driving device 1 is fixed on the top frame. However, it should be noted that the decoupling mechanism driving device 1 can also be fixed on the pulley 6.

[0039] In order to improve the detection effect of the safety lock 10, the safety lock detection device further includes a starting device 33. When the hook pin 29 is hooked in the hook 24, when the hook 24 is moved to contact the trigger pin 28, the starting device 33 is compressed by the movable pulley 25 or the movable pulley connecting member 35. When the hook 24 is unhooked from the hook pin 29, the starting device 33 can eject the movable pulley 25 and the movable pulley connecting member 35. Figure 4 and Figure 5 It can be clearly seen in FIG. 2 that the starting device 33 is formed by a spring element, in particular a compression spring, and that the starting device 33 is arranged on the movable pulley guide device 26 .

[0040] In order to prevent the movable pulley 25 and the movable pulley connector 35 from impacting the movable pulley guide device 26 when the safety lock 10 fails, the safety lock detection device further includes a buffer device 34, which is used to block and buffer the movable pulley 25 and the movable pulley connector 35 when the safety lock 10 fails. Figure 4 It can be clearly seen in FIG. 3 that the damping device 34 is arranged on the movable pulley guide 26 and is formed by a spring element, in particular a compression spring.

[0041] Back again Figures 1 to 3 It can be seen that the detection test bench also includes a safety device detection device 22 that can be used to detect the safety device, and the safety device detection device 22 is fixed on the base 19 inside the frame 2. The safety device can be installed and detected in the safety device detection device 22, wherein the safety device detection device 22 is arranged so that its axial direction is perpendicular to or parallel to the sliding direction of the pulley 6. Such a safety device detection device 22 can be a safety device detection device 22 known in the prior art. For example, the SAJT-M series anti-fall safety device horizontal detection bench was developed by the applicant of this application. As a result, the safety lock detection device and the safety device detection device 22 are integrated in the detection test bench, that is, the detection test bench can be used not only to detect the safety lock, but also to detect the safety device. Moreover, since the safety device detection device 22 is located inside the frame 2, it does not need to occupy additional space.

[0042] The following describes in detail how to switch the state of the test bench. Figure 2 The test bench is shown in the folded state. In order to carry out the test, the test bench must first be moved from Figure 2 The collapsed state shown switches to Figure 1 To this end, the locking pin 17 is first unlocked, thereby releasing the counterweight 11 from the frame 2. The trolley drive 4 can then be driven to move the trolley 6 from the Figure 2 The storage position shown in the rack 2 is slid to Figure 1 The tilting frame drive 18 can then be driven to move the tilting frame 16 from the sliding position shown in FIG. Figure 2 The folded position shown inside the frame 2 is flipped to Figure 1 When the trolley 6 has slid to the slid-out position extending from the frame 2 and the turning frame 16 has turned over to the unfolded position turning out from the frame 2, the guide rope 12 is tightened in the vertical direction, so that the test bench is in Figure 1 The detection state shown in FIG. 1 is such that the detection of the safety lock 10 can be implemented. It should be noted that the order of sliding the pulley 6 and flipping the flip frame 16 can be interchanged, that is, the flip frame 16 can be first moved from the Figure 2 The folded position shown inside the frame 2 is flipped to Figure 1 The trolley 6 is then pulled out of the frame 2 and out of the deployed position. Figure 2 The storage position shown in the figure is located inside the frame 2 and slides to Figure 1 Alternatively, the sliding of the trolley 6 and the turning of the turning frame 16 can also be implemented synchronously. Figure 1 The detection status shown switches to Figure 2 The folded state shown can accordingly make the pulley 6 move from Figure 1 Slide to the slide-out position shown Figure 2 The storage position shown and the turning frame 16 from Figure 1 The expanded position shown is flipped to Figure 2 The folded position is shown. The counterweight 11 is then locked to the frame 2 using the locking pin 17. The height of the counterweight 11 can be adjusted using the lifting device or the unhooking mechanism drive 1 so that it is in a position where it can be locked to the frame 2 using the locking pin 17.

[0043] How to install or replace the safety lock 10 to be tested will be described in detail below. Figure 1In the illustrated state, the counterweight 11 is lowered to its lowest position using the lifting device so that it is supported on the shock absorbing device 14. The safety rope locking device 15 is then released, and the safety rope 13 is pulled out of the previously tested safety lock 10. The previously tested safety lock 10 is then removed from the counterweight 11. A new safety lock 10 to be tested is then installed on the counterweight 11. The safety rope 13 is then passed through the newly installed safety lock 10 to be tested, and the lower end of the safety rope 13 is secured to the tilting frame 16 using the safety rope locking device 15. If a safety lock 10 has not yet been installed on the counterweight 11, the steps of pulling the safety rope 13 out of the previously tested safety lock 10 and removing the previously tested safety lock 10 from the counterweight 11 are omitted.

[0044] The following describes in detail how to test the safety lock 10. First, the counterweight 11, with the safety lock 10 to be tested already installed, is lifted to a predetermined position using a lifting device. The unhooking mechanism drive 1 is then activated, moving the hook connector 23 toward the trigger pin 28. Since the hook pin 29 is already engaged with the hook 24, the hook connector 23 drives the movable pulley connector 35 along with the movable pulley 25. Driven by the unhooking mechanism drive 1, the hook 24 reaches the trigger pin 28 and contacts it, causing the hook 24 to stop moving. At this point, the trigger 33 is compressed by the movable pulley 25 or the movable pulley connector 35. Further driven by the unhooking mechanism drive 1, the hook 24 pivots about the hinge 30, overcoming the preload of the tension spring 27, thereby disengaging the hook 24 from the hook pin 29. Under the action of the starting device 33, the movable pulley 25 and the movable pulley connector 35 are quickly ejected, thereby immediately loosening the traction rope 20 pulling the counterweight 11. If the safety lock 10 is a swing-arm anti-tilt safety lock, the loosening of the traction rope 20 releases the swing arm of the safety lock 10, and the safety lock 10 is braked. If the safety lock 10 is a centrifugal trigger safety lock, the counterweight 11 falls under the action of its own gravity. When the speed of the counterweight 11 reaches the triggering threshold of the safety lock 10, the centrifugal force generated by the flying weight of the safety lock 10 overcomes the restraining force of the spring and is thrown outward to a certain extent, triggering the waiting actuator, driving the rope locking mechanism to operate, and locking the locking block to the safety rope 13. As the counterweight 11 falls along the guide rope 12, the displacement sensor 7 can detect the distance the counterweight 11 falls during the braking process, thereby obtaining the braking distance of the safety lock 10. The pressure sensor 8 measures the braking force of the safety lock 10 by detecting the tension in the safety rope 13 during braking. If the safety lock 10 is unable to brake within the effective travel (e.g., 500 mm), it indicates failure. The buffer device 34 then blocks and cushions the movable pulley 25 and the movable pulley connector 35, while the counterweight 11 continues to fall until the shock absorber 14 stops it. This completes the detection process.

[0045] The following describes in detail how to reset the test bench after a completed test. After the test is complete, the movable pulley 25 moves along the movable pulley guide 26 to a maximum position defined by the buffer 34. At this point, the unhooking mechanism drive 1 is activated, causing the hook connector 23 and its hook 24 to move toward the hook pin 29 on the movable pulley connector 35 until the hook 24 contacts the hook pin 29. Further activation of the unhooking mechanism drive 1 causes the hook pin 29 to engage the hook 24, overcoming the preload force of the tensioning spring 27. After the hook pin 29 is fully engaged, the hook 24 securely holds the hook pin 29 under the preload force of the tensioning spring 27. The unhooking mechanism drive 1 is then driven in the reverse direction, moving the hook connector 23 and its hook 24 to their pre-unhooking position, where they stop and await the next test. At this time, if the counterweight 11 does not stop at a suitable position, the counterweight 11 can be lifted to a suitable position by means of a lifting device.

[0046] The above description is merely an exemplary embodiment of the present application. The scope of protection of the present application is not limited to the above embodiments. All technical solutions within the scope of protection of the present application are within the scope of protection of the present application. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present application should also be considered within the scope of protection of the present application.

Claims

1. A test bench comprising a safety lock detection device capable of detecting a safety lock (10), The safety lock detection device comprises: A frame (2), the frame (2) comprising a base (19) and a top frame; as well as a counterweight (11), the counterweight (11) being suspended on the frame (2) by means of a traction rope (20) and being capable of being lifted by means of a lifting device, the safety lock (10) to be tested being capable of being mounted on the counterweight (11), It is characterized in that The safety lock detection device also includes: A pulley (6), the pulley (6) being slidably supported on the top frame of the frame (2); A turning frame (16) which is supported on a base (19) of the machine frame (2) in a turnable manner; and a guide rope (12) passing through the counterweight (11) for guiding the counterweight (11), wherein the upper end of the guide rope (12) is fixed to the pulley (6) and the lower end of the guide rope (12) is fixed to the turning frame (16), The safety lock detection device can be switched between a folded state and a detection state, wherein: In the folded state, the pulley (6) slides to a storage position located inside the frame (2) and the flip frame (16) flips to a folded position located inside the frame (2); In the detection state, the trolley (6) slides to a sliding position extending from the frame (2) and the tilting frame (16) tilts to an unfolded position tilted out from the frame (2), and the guide rope (12) is tightened in the vertical direction in the detection state, so that the safety lock (10) can be detected.

2. The test bench according to claim 1, It is characterized in that The safety lock detection device further comprises a safety rope (13), the upper end of the safety rope (13) being fixed to the pulley (6) and the lower end of the safety rope (13) being able to pass through the safety lock (10) to be detected.

3. The test bench according to claim 2, It is characterized in that The safety lock detection device also includes: a pressure sensor (8) arranged on the pulley (6), wherein the upper end of the safety rope (13) is fixed to the pulley (6) via the pressure sensor (8), wherein the pressure sensor (8) is used to measure the braking force of the safety lock (10) when detecting the safety lock (10); and / or A safety rope locking device (15), wherein the lower end of the safety rope (13) is fixed to the turning frame (16) by means of the safety rope locking device (15).

4. The test bench according to claim 1, It is characterized in that The safety lock detection device further comprises a shock absorbing device (14) arranged on the flip frame (16), wherein the shock absorbing device (14) is used to buffer the falling counterweight (11) when the safety lock (10) fails.

5. The test bench according to claim 4, It is characterized in that The shock absorbing device (14) is formed by a spring member sleeved on the guide rope (12).

6. The detection test bench according to claim 1, It is characterized in that The safety lock detection device further comprises a displacement sensor (7) arranged on the pulley (6), wherein the displacement sensor (7) is used to measure the braking distance of the safety lock (10) when detecting the safety lock (10).

7. The test bench according to claim 6, It is characterized in that The displacement sensor (7) is a wire displacement sensor, and the free end of the wire of the wire displacement sensor is fixed on the counterweight (11).

8. The detection test bench according to claim 1, It is characterized in that A slide rail (3) is arranged on the top frame of the frame (2), and the trolley (6) is slidably supported on the top frame of the frame (2) by means of the slide rail (3); and / or A pulley limiting member (5) is arranged on the top frame of the frame (2), and the pulley limiting member (5) limits the storage position and the sliding-out position of the pulley (6) and / or prevents the pulley (6) from turning over.

9. The detection test bench according to claim 1, It is characterized in that The traction rope (20) connects the counterweight (11) to the lifting device through a pulley block, and the pulley block includes at least one fixed pulley (21) and one movable pulley (25), wherein the fixed pulley (21) is fixed on the pulley (6) above the counterweight (11), and the movable pulley (25) is supported in a movable pulley guide device (26) so as to be movable in the horizontal direction by means of a movable pulley connecting member (35), and the movable pulley guide device (26) is fixed on the pulley (6) or the top frame.

10. The detection test bench according to claim 9, It is characterized in that The safety lock detection device further includes a decoupling mechanism, which includes: A hook pin (29), wherein the hook pin (29) is fixed to the movable pulley connecting member (35); Retractor connecting piece (23); A draw hook (24), the draw hook (24) being hinged to the draw hook connector (23) and pre-tensioned by a tensioning spring (27), so that when the draw hook (24) moves toward the draw hook pin (29) and collides with the draw hook pin (29), the draw hook pin (29) can be hooked into the draw hook (24); a decoupling mechanism driving device (1), the decoupling mechanism driving device (1) being capable of moving the draw hook (24) in a horizontal direction toward or away from the draw hook pin (29) via the draw hook connecting member (23); and A trigger pin (28) is located in the moving path of the draw hook (24), so that when the draw hook (24) is moved to contact the trigger pin (28), the draw hook (24) is pivoted by the trigger pin (28) under the driving force of the decoupling mechanism driving device (1) to overcome the preload force of the tensioning spring (27), so that the draw hook (24) is decoupled from the draw hook pin (29).

11. The detection test bench according to claim 10, It is characterized in that The safety lock detection device also includes: a starting device (33) which, in a state where the hook pin (29) is hooked in the hook (24), is compressed by the movable pulley (25) or the movable pulley connecting member (35) when the hook (24) is moved to contact the trigger pin (28), so that when the hook (24) is unhooked from the hook pin (29), the starting device (33) can eject the movable pulley (25) and the movable pulley connecting member (35); and / or A buffer device (34) is used to block and buffer the movable pulley (25) and the movable pulley connecting member (35) when the safety lock (10) fails.

12. The test bench according to claim 11, It is characterized in that The trigger pin (28) and / or the starting device (33) and / or the buffer device (34) are arranged on the movable pulley guide device (26); and / or The unhooking mechanism driving device (1) is fixed on the pulley (6) or the top frame; and / or The buffer device (34) is formed by a spring element; and / or The starting device (33) is formed by a spring element.

13. The detection test bench according to claim 1, It is characterized in that The safety lock detection device also includes: A trolley drive device (4), the trolley drive device (4) being used to slide the trolley (6) between the stored position and the slide-out position; and / or A turning frame drive device (18) is provided, wherein the turning frame drive device (18) is used to turn the turning frame (16) between the folded position and the unfolded position.

14. The detection test bench according to claim 13, It is characterized in that The trolley drive (4) and / or the tilting frame drive (18) and / or the lifting device are fixed on the machine frame (2).

15. The detection test bench according to claim 1, It is characterized in that A guide wheel (31) is arranged on the counterweight (11), and the guide rope (12) passes through the counterweight (11) via the guide wheel (31).

16. The detection test bench according to claim 1, It is characterized in that The detection test bench also includes a safety device detection device (22) capable of detecting a safety device, wherein the safety device detection device (22) is fixed on the base (19) inside the frame (2), and a safety device can be installed and detected in the safety device detection device (22), wherein the safety device detection device (22) is arranged so that its axial direction is perpendicular to or parallel to the sliding direction of the pulley (6).

17. The detection test bench according to claim 1, It is characterized in that The safety lock detection device further comprises a locking pin (17). When the safety lock detection device is in a retracted state, the locking pin (17) can lock the counterweight (11) on the frame (2).

18. The test bench according to any one of claims 1 to 17, It is characterized in that The detection test bench also includes a movable carriage (32), and the frame (2) is installed in the carriage (32).

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