Safety protection system for getting on vehicle and aerial work equipment

Abstract

The application discloses an upper vehicle safety protection system and aerial work equipment. The upper vehicle safety protection system comprises an upper vehicle device, a detection device and a control device. The telescopic arm support of the upper vehicle device is installed on a rotary table. The fly arm is installed between the telescopic arm support and a work platform. The arm stretching rope wheel mechanism is installed on the telescopic arm support and is used for guiding the extension movement of the telescopic arm support. The detection device is connected with the arm stretching rope wheel mechanism and is used for detecting the tension index of the arm stretching rope wheel mechanism. The control device is in communication connection with the detection device and is configured to determine whether at least one of the telescopic arm support, the fly arm and the work platform is at risk of damage according to the tension index detected by the detection device. In the case that it is determined that there is a risk of damage, the current action is controlled to stop. The detection device is arranged on the arm stretching rope wheel mechanism, so that whether the telescopic arm support, the fly arm and the work platform in the upper vehicle device are at risk of damage is judged at the same time, and the safety of the whole vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aerial work equipment, and particularly relates to an upper vehicle safety protection system, a manufacturing method and an aerial work equipment. BACKGROUND

[0002] The aerial work platform is a product widely used in various industries for high-altitude work, equipment installation, maintenance and other mobile high-altitude work. As a manned device, the safety level of the aerial work platform is much higher than that of the hoisting device, and in the safety importance classification thereof, the safety of the upper vehicle is the most important.

[0003] At present, the upper vehicle of the aerial work platform is only provided with a weighing sensor at the working platform to monitor the load change of the working platform, and when the working platform is hit or heavy objects fall, corresponding control can also be made according to the load change of the weighing sensor to avoid the equipment from tipping over due to overloading or impact. However, the overloading or impact of the jib and arm of the upper vehicle may also cause arm damage or equipment tipping over, but the aerial work platform has not yet monitored and warned the damage risk on the jib and arm. SUMMARY

[0004] In view of the above defects or deficiencies, the present application provides an upper vehicle safety protection system and an aerial work equipment, aiming to solve the technical problem that the aerial work platform has not yet monitored and warned the damage risk on the jib and arm.

[0005] To achieve the above-mentioned purpose, the present application provides an upper vehicle safety protection system, wherein the upper vehicle safety protection system comprises: an upper vehicle device, a detection device and a control device; the upper vehicle device comprises a telescopic arm, a jib, a working platform and an arm stretching rope wheel mechanism, the telescopic arm is used to be installed on a rotating table, the jib is installed between the telescopic arm and the working platform, and the arm stretching rope wheel mechanism is installed on the telescopic arm and used to guide the extension movement of the telescopic arm; the detection device is connected with the arm stretching rope wheel mechanism and used to detect the tension index of the arm stretching rope wheel mechanism; the control device is in communication connection with the detection device and configured to: determine whether at least one of the telescopic arm, the jib and the working platform exists a damage risk according to the tension index detected by the detection device; and control to stop the current action in the case of determining that the damage risk exists.

[0006] In the embodiment of the present application, the telescopic arm comprises a basic arm, a telescopic arm and a telescopic oil cylinder, the basic arm is used to be installed on the rotating table, the telescopic arm is telescopically installed in the basic arm and used to carry the jib, and the telescopic oil cylinder is installed on the basic arm and drivingly connected with the telescopic arm to drive the telescopic arm to perform telescopic movement.

[0007] The jib rope wheel mechanism comprises a jib pulley and a jib rope assembly, the jib pulley is installed at the outer end of the telescopic arm, one end of the jib rope assembly is installed on the base arm, the other end of the jib rope assembly passes through the jib pulley and is installed at the inner end of the telescopic arm, and the detection device is connected to the one end of the jib rope assembly installed on the base arm to detect the tension index of the jib rope assembly.

[0008] In the embodiment of the present application, two rope grooves are formed on the jib pulley, the jib rope assembly comprises a steel wire rope, a tension pulley and a deformed pin shaft, the deformed pin shaft passes through the tension pulley and is installed on the base arm, the steel wire rope comprises a tension section and two telescopic sections, the tension section passes through the tension pulley and extends to the jib pulley at both ends, the first ends of the two telescopic sections are connected to the two ends of the tension section one by one, and the second ends of the two telescopic sections pass through the two rope grooves one by one and are connected to the inner ends of the telescopic arms respectively, and the detection device is connected to the deformed pin shaft and used for detecting the tension index of the deformed pin shaft.

[0009] In the embodiment of the present application, the detection device is a force sensor, and the control device is further configured to determine that at least one of the telescopic arm frame, the jib arm and the working platform is at risk of damage and control to stop the current action in the case that the actual load detected by the force sensor exceeds the set load.

[0010] In the embodiment of the present application, the detection device is a displacement sensor, and the control device is further configured to:

[0011] In the case that the actual displacement detected by the displacement sensor exceeds the set displacement, it is determined that at least one of the telescopic arm frame, the jib arm and the working platform is at risk of damage and the current action is controlled to stop.

[0012] In the embodiment of the present application, the upper vehicle safety protection system further comprises a platform load sensor for detecting the real-time platform load of the working platform, an arm frame length sensor for detecting the real-time arm frame extension of the telescopic arm frame, and an arm frame angle sensor for detecting the real-time arm frame angle of the telescopic arm frame, and the control device is further configured to:

[0013] The set load or the set displacement is determined according to the real-time platform load, the real-time arm frame extension and the real-time arm frame angle.

[0014] In the embodiment of the present application, the telescopic section is provided with a first connecting block connected to the tension section, and the base arm is provided with a stop support for stopping the first connecting block and forming a rope passing channel for the telescopic section to pass through.

[0015] In the embodiment of the present application, the end of the tension section is provided with a second connecting block, and the second connecting block is detachably connected to the first connecting block through a connecting pin shaft.

[0016] In the embodiment of the present application, the basic arm is provided with a pulley mounting seat, the pulley mounting seat comprises a connecting portion mounted on the basic arm and first and second lug plate portions oppositely arranged on the connecting portion, the tension pulley is arranged between the first and second lug plate portions, and the deformed pin shaft is arranged in sequence through the first lug plate portion, the tension pulley and the second lug plate portion, and the detection device is mounted on one of the first and second lug plate portions and connected with the deformed pin shaft.

[0017] In the embodiment of the present application, the basic arm is provided with a fixed seat, and the connecting portion of the pulley mounting seat is detachably mounted on the fixed seat.

[0018] To achieve the above-mentioned purpose, the present application further provides a high-altitude operation equipment, wherein the high-altitude operation equipment comprises the above-mentioned superstructure safety protection system.

[0019] Through the above technical solution, the superstructure safety protection system provided by the embodiment of the present application has the following beneficial effects:

[0020] When the above-mentioned superstructure safety protection system is used, since the superstructure device, the detection device and the control device are included, the detection device is connected with the stretching arm rope wheel mechanism of the superstructure device and is used for detecting the tension index of the stretching arm rope wheel mechanism, and the tension index of the stretching arm rope wheel mechanism can reflect whether at least one of the telescopic arm frame, the fly arm and the working platform of the superstructure device has a damage risk caused by accidental increase of load or impact, if the control device receives the tension index with abnormal change sent by the detection device, it can be determined that there is a damage risk, at this time, the control device can control the equipment to stop the current action, prevent the telescopic arm frame, the fly arm and the working platform in the superstructure device from being further damaged, avoid the occurrence of arm breakage or whole vehicle overturning, compared with the prior art in which only a weighing sensor is arranged at the working platform, the detection device for detecting the tension index of the stretching arm rope wheel mechanism is arranged in the present application, so that whether the telescopic arm frame, the fly arm and the working platform in the superstructure device have a damage risk can be judged at the same time, and the safety of the whole vehicle is improved.

[0021] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are used to provide an understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0023] Figure 1 is a structural schematic view of a high-altitude operation equipment in an embodiment of the present application;

[0024] Figure 2 is Figure 1enlarged view of A in FIG. 1;

[0025] Figure 3 is a structural schematic view of a view of the tensioning pulley on the basic arm according to an embodiment of the application;

[0026] Figure 4 is a structural schematic view of another view of the tensioning pulley on the basic arm according to an embodiment of the application;

[0027] Figure 5 is a control logic schematic view of the upper car safety protection system according to an embodiment of the application.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 100 telescopic arm 101 basic arm

[0030] 102 telescopic arm 105 telescopic oil cylinder

[0031] 200 flying arm 300 working platform

[0032] 400 telescopic arm rope wheel mechanism 401 telescopic arm pulley

[0033] 402 telescopic arm rope assembly 403 steel wire rope

[0034] 404 tensioning pulley 405 deforming pin shaft

[0035] 406 tensioning section 407 telescopic section

[0036] 408 first connecting block 409 second connecting block

[0037] 500 detection device 600 stop support

[0038] 700 pulley mounting seat 701 connecting portion

[0039] 702 first ear plate portion 703 second ear plate portion

[0040] 800 fixed seat 801 connecting support

[0041] 802 support cross plate 803 limiting nut

[0042] 900 rotating table DETAILED DESCRIPTION

[0043] The specific embodiments of the application are described below in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the application, and are not intended to limit the application.

[0044] The aerial work platform is a product widely used in various industries for high-altitude work, equipment installation, maintenance and other high-mobility high-altitude work. As a manned device, the safety level of the aerial work platform is much higher than that of the hoisting device, and in its safety importance classification, the safety of the upper car is the top priority.

[0045] At present, the upper car of the aerial work platform is only provided with a weighing sensor at the work platform to monitor the load change of the work platform, so that when the work platform is hit or heavy objects fall, corresponding control can be made according to the load change of the weighing sensor to avoid the equipment from tipping over due to overload of the work platform. However, the impact on the jib and arm of the upper car may also cause arm damage or equipment tipping over, but there is no aerial work platform to monitor and warn the impact risk on the jib and arm.

[0046] Specifically, the load increase on the work platform or the impact, the jib lifting heavy objects or the impact, and the arm lifting heavy objects or the impact can be equivalent to applying a force F on the work platform, the jib or the arm. The force F can be divided into a force F1 in the arm direction and a force F2 perpendicular to the arm direction. When the arm is extended and retracted by the telescopic oil cylinder and the steel wire rope and remains stationary at a position, the force F1 will cause the balance of the arm system to be broken, and the degree of tension of the steel wire rope will change. When the arm is extended and retracted, the presence of the force F2 will increase the friction, causing the degree of tension of the steel wire rope to change. In view of this, the present application provides an upper car safety protection system, which is designed to detect the degree of tension of the steel wire rope to determine whether the work platform, jib and arm of the upper car increase unexpected load or are hit.

[0047] The upper car safety protection system and the aerial work device of the present application are described below with reference to the accompanying drawings.

[0048] As shown in Figure 1 and Figure 2 , the present application provides an upper car safety protection system, wherein the upper car safety protection system comprises:

[0049] The upper car device comprises a telescopic arm 100, a jib 200, a work platform 300 and an arm extending rope wheel mechanism 400, the telescopic arm 100 is used to be installed on a rotating table 900, the jib 200 is installed between the telescopic arm 100 and the work platform 300, and the arm extending rope wheel mechanism 400 is installed on the telescopic arm 100 and used to guide the extension movement of the telescopic arm 100;

[0050] The detection device 500 is connected with the arm extending rope wheel mechanism 400 and used to detect the tension index of the arm extending rope wheel mechanism 400;

[0051] The control device is in communication connection with the detection device 500 and is configured to:

[0052] determine whether at least one of the telescopic boom 100, the jib 200 and the work platform 300 is at risk of damage according to the tension index detected by the detection device 500;

[0053] stop the current action if it is determined that there is a risk of damage.

[0054] When the above-described loading safety protection system is used, since the loading device, the detection device 500 and the control device are included, the detection device 500 is connected with the stretching arm rope wheel mechanism 400 of the loading device and is used to detect the tension index of the stretching arm rope wheel mechanism 400, the tension index of the stretching arm rope wheel mechanism 400 can reflect whether at least one of the telescopic boom 100, the jib 200 and the work platform 300 of the loading device is at risk of damage due to an unexpected increase in load or an impact, if the control device receives the tension index with abnormal change sent by the detection device 500, it can be determined that there is a risk of damage, at this time, the control device can control the equipment to stop the current action, prevent the telescopic boom 100, the jib 200 and the work platform 300 in the loading device from continuing to be damaged, avoid the occurrence of broken arm or whole vehicle overturning, compared with the prior art in which only a load sensor is arranged at the work platform, the detection device 500 for detecting the tension index of the stretching arm rope wheel mechanism 400 is arranged in the present application, so that whether at least one of the telescopic boom 100, the jib 200 and the work platform 300 in the loading device is at risk of damage can be determined at the same time, the safety of the whole vehicle is improved.

[0055] In the embodiment of the present application, the telescopic boom 100 comprises a basic arm 101, a telescopic arm 102 and a telescopic cylinder 105, the basic arm 101 is used to be mounted on the rotating table 900, the telescopic arm 102 is telescopically mounted in the basic arm 101 and used to carry the fly boom 200, the telescopic cylinder 105 is mounted on the basic arm 101 and drivingly connected with the telescopic arm 102 to drive the telescopic arm 102 to perform telescopic movement; the telescopic arm rope wheel mechanism 400 comprises a telescopic arm pulley 401 and a telescopic arm rope assembly 402, the telescopic arm pulley 401 is mounted on the outer end of the telescopic arm 102, the outer end of the telescopic arm 102 refers to the end of the telescopic arm 102 which can be extended out of the basic arm 101, one end of the telescopic arm rope assembly 402 is mounted on the basic arm 101, the other end of the telescopic arm rope assembly 402 passes through the telescopic arm pulley 401 and is mounted on the inner end of the telescopic arm 102, the inner end of the telescopic arm 102 is defined relative to the outer end, that is, the end of the telescopic arm 102 which cannot be extended out of the basic arm 101, the detection device 500 is connected with the end of the telescopic arm rope assembly 402 mounted on the basic arm 101 to detect the tension index of the telescopic arm rope assembly 402. That is, the detection device 500 can be correspondingly arranged on the basic arm 101, which is convenient for the arrangement of the wire harness of the detection device 500, and since the basic arm 101 is located at the outermost side of the telescopic boom 100, it is also beneficial to the maintenance and replacement of the detection device 500. Of course, the present application is not limited thereto, the detection device 500 can also be connected with the end of the telescopic arm rope assembly 402 mounted on the telescopic arm 102, or the detection device 500 can also be connected with the mounting rod carrying the telescopic arm pulley 401, so that the detection device 500 can detect the tension index of the entire telescopic arm rope assembly 402. However, if the detection device 500 is correspondingly arranged on the telescopic arm 102, a drag chain needs to be arranged to facilitate the telescopic movement of the wire harness of the detection device 500.

[0056] It needs to be particularly pointed out that the telescopic arm 102 can comprise a first telescopic section arm and a second telescopic section arm, the first telescopic section arm is telescopically mounted in the basic arm 101, the second telescopic section arm is telescopically mounted in the first telescopic section arm and carries the fly boom 200, the telescopic cylinder 105 can be provided in two stages and correspondingly arranged with the first telescopic section arm and the second telescopic section arm, the telescopic arm pulley 401 is mounted on the outer end of the second telescopic section arm, one end of the telescopic arm rope assembly 402 is mounted on the basic arm 101, the other end of the telescopic arm rope assembly 402 passes through the telescopic arm pulley 401 and is mounted on the inner end of the second telescopic section arm. Of course, the present application is not limited thereto, the number of telescopic sections of the telescopic arm 102 is not limited to two sections, and can also exceed two sections, for example, a three-section telescopic arm, and the telescopic arm pulley 401 is mounted on the outer end of the telescopic section arm at the end.

[0057] Referring to Figures 1 to 3In the embodiment of the present application, two rope grooves are formed on the outrigger pulley 401, the outrigger rope assembly 402 comprises a steel wire rope 403, a tension pulley 404 and a deformed pin shaft 405, the deformed pin shaft 405 is installed on the base arm 101 through the tension pulley 404, the steel wire rope 403 comprises a tensioning section 406 and two telescopic sections 407, the tensioning section 406 is wound around the tension pulley 404 and the two ends of the tensioning section 406 extend to the outrigger pulley 401, the first ends of the two telescopic sections 407 are connected to the two ends of the tensioning section 406 one by one, and the second ends of the two telescopic sections 407 are wound around the two rope grooves one by one and are connected to the inner ends of the telescopic arms 102 respectively, and the detection device 500 is connected to the deformed pin shaft 405 and is used for detecting the tensioning index of the deformed pin shaft 405. That is, the steel wire rope 403 of the outrigger rope assembly 402 is installed on the base arm 101 through the tension pulley 404, the tension pulley 404 plays a role of tensioning the steel wire rope 403, and since the deformed pin shaft 405 installed on the base arm 101 is used for bearing the tension pulley 404, the force applied to the tension pulley 404 by the steel wire rope 403 can be transferred to the deformed pin shaft 405, when the load of at least one of the telescopic arm frame 100, the jib 200 and the working platform 300 is unexpectedly increased or is impacted, the deformed pin shaft 405 is abnormally stressed and can be abnormally deformed, the tensioning index of the deformed pin shaft 405 can be the stress of the deformed pin shaft 405 and the deformation displacement of the deformed pin shaft 405, and the detection device 500 detects the stress or the deformation displacement of the deformed pin shaft 405, so that the tensioning index of the outrigger rope assembly 402 can be obtained.

[0058] Specifically, the tension pulley 404 can rotate around the deformed pin shaft 405, so that the steel wire ropes 403 of the two telescopic sections 407 are balanced in stress. Meanwhile, when the outrigger rope assembly 402 is installed, the steel wire rope 403 can be pre-tensioned through the tension pulley 404, on the one hand, the steel wire rope 403 can reach the requirement of pre-tightening force, and on the other hand, the deformed pin shaft 405 can have an initial deformation.

[0059] In another embodiment of the present application, the boom rope assembly 402 can also be directly provided as a steel wire rope 403, one end of the steel wire rope 403 is connected with the detection device 500 provided on the base arm 101, the other end of the steel wire rope 403 is connected with the telescopic arm 102 near one end of the base arm 101 through the boom pulley 401, and then the detection device 500 can directly detect the stress of the steel wire rope 403 to obtain the tension index of the boom rope assembly 402. In still another embodiment of the present application, the boom rope assembly 402 can also be provided as two steel wire ropes 403, the detection device 500 is connected with the two steel wire ropes 403, one end of one of the steel wire ropes 403 is connected with the base arm 101, and the other steel wire rope 403 is connected with the telescopic arm 102 near one end of the base arm 101 through the boom pulley 401, and then the detection device 500 connected with the two steel wire ropes 403 can also detect the stress of the steel wire rope 403 to obtain the tension index of the boom rope assembly 402.

[0060] In the embodiment of the present application, the detection device 500 can be a force sensor, and the control device is further configured to determine that at least one of the telescopic arm support 100, the boom 200 and the working platform 300 is at risk of damage and control to stop the current action when the actual load detected by the force sensor exceeds the set load. That is, the control device can be preset with a set load, which is a critical value for defining the beginning or increase of the damage risk, the force sensor can detect the stress load of the deformed pin shaft 405, the control device can compare the actual load detected by the force sensor with the set load, if the actual load is greater than the set load, it proves that the damage risk begins to exist or increases, the equipment alarms and stops the current action, of course, the difference between the actual load and the set load can also be greater than the set threshold value, then the equipment alarms and stops the current action, if the actual load is less than or equal to the set load, it proves that there is no damage risk or the damage risk is small, and the equipment works normally. For example, when the telescopic arm support 100 is extended and the boom 200 touches the obstacle, the actual load is detected to be greater than the set load, and the extension action is immediately controlled to stop to prevent further damage; when the boom 200 is hoisting, the actual load is detected to be greater than the set load, and the extension action is immediately stopped to prevent the equipment from tipping over.

[0061] In the embodiment of the present application, the detection device 500 can be a displacement sensor, and the control device is further configured to: in the case that the actual displacement detected by the displacement sensor exceeds the set displacement, determine that at least one of the telescopic boom 100, the jib 200 and the working platform 300 is at risk of damage and control to stop the current action. That is, the control device can be preset with a set displacement, which is a critical value for defining the beginning of the risk of damage or the increase of the risk of damage, the displacement sensor can detect the deformation displacement of the deformed pin shaft 405, and the control device can compare the actual displacement detected by the displacement sensor with the set displacement. If the actual displacement is greater than the set displacement, it proves that the risk of damage begins to exist or increases, the equipment alarms and stops the current action, of course, the equipment can also alarm and stop the current action when the difference between the actual displacement and the set displacement is greater than a set threshold, and if the actual displacement is less than or equal to the set displacement, it proves that there is no risk of damage or the risk of damage is small, and the equipment works normally.

[0062] As shown in Figure 5 In the embodiment of the present application, the upper vehicle safety protection system further comprises a platform load sensor for detecting the real-time platform load of the working platform 300, an arm length sensor for detecting the real-time arm stretch of the telescopic boom 100, and an arm angle sensor for detecting the real-time arm angle of the telescopic boom 100, and the control device is further configured to:

[0063] The set load or set displacement is determined according to the real-time platform load, real-time arm stretch and real-time arm angle.

[0064] Specifically, in the case that the platform load of the working platform 300 and the arm stretch and arm angle of the telescopic boom 100 are different, the set load and the set displacement are not the same, that is, the set load and the set displacement need to be determined according to the platform load, the arm stretch and the arm angle, so as to further improve the installation of the whole vehicle.

[0065] As shown in Figure 3 and Figure 4 In the embodiment of the present application, the telescopic section 407 is provided with a first connecting block 408 connected with the tensioning section 406, and the basic arm 101 is provided with a stop support 600 for stopping the first connecting block 408 and forming a rope passing channel for the telescopic section 407 to pass through. That is, the first connecting block 408 cannot pass through the rope passing channel formed by the stop support 600, so when the tensioning section 406 breaks, the rope end of the telescopic section 407 can be stopped by the stop support 600 due to the existence of the first connecting block 408, to prevent safety accidents. Specifically, the number of stop supports 600 is two, and the two stop supports 600 are respectively arranged in one-to-one correspondence with the two telescopic sections 407.

[0066] In the embodiment of the present application, the end of the tensioning section 406 is provided with a second connecting block 409, which is detachably connected with the first connecting block 408 through a connecting pin shaft. That is, the tensioning section 406 and the telescopic section 407 are detachably connected, so that when one of them is damaged, the whole does not need to be replaced. Specifically, one of the first connecting block 408 and the second connecting block 409 is provided with two clamping portions arranged at a relative interval, and a clamping space is formed between the two clamping portions. The other of the first connecting block 408 and the second connecting block 409 is formed with a mounting portion inserted into the clamping space, and the connecting pin shaft is arranged through the mounting portion and the two clamping portions. In addition, the number of the second connecting block 409 is two, and the two ends of the tensioning section 406 are provided with the second connecting block 409. Of course, the present application is not limited to this, and the tensioning section 406 can also be fixedly connected with the second connecting block 409 by welding or other detachable connection modes.

[0067] Referring to Figures 2 to 4 In the embodiment of the present application, the basic arm 101 is provided with a pulley mounting seat 700, which includes a connecting portion 701 mounted on the basic arm 101, and a first ear plate portion 702 and a second ear plate portion 703 arranged at a relative interval on the connecting portion 701. The tensioning pulley 404 is arranged between the first ear plate portion 702 and the second ear plate portion 703, and the deformation pin shaft 405 is arranged through the first ear plate portion 702, the tensioning pulley 404 and the second ear plate portion 703 in sequence. The detection device 500 is mounted on one of the first ear plate portion 702 and the second ear plate portion 703 and connected with the deformation pin shaft 405. Then the deformation pin shaft 405 can be stably mounted on the basic arm 101 through the pulley mounting seat 700, and the first ear plate portion 702 and the second ear plate portion 703 of the pulley mounting seat 700 are respectively used to support and limit the deformation pin shaft 405 one by one. Specifically, the first ear plate portion 702 and the second ear plate portion 703 are both provided with a limiting hole through which the deformation pin shaft 405 passes, and the hole diameter of the limiting hole is greater than the shaft diameter of the deformation pin shaft 405, which is a clearance fit.

[0068] In the embodiment of the present application, the basic arm 101 is provided with a fixing seat 800, and the connecting portion 701 of the pulley mounting seat 700 is detachably mounted on the fixing seat 800, so as to facilitate the disassembly and assembly of the pulley mounting seat 700 and the arm extending rope assembly 402 on the pulley mounting seat 700. Specifically, the fixing seat 800 includes two connecting supports 801 arranged at a relative interval and a supporting cross plate 802 connecting the two connecting supports 801. The supporting cross plate 802 is provided with a through hole, the free end of the connecting portion 701 of the pulley mounting seat 700 is provided with an external thread segment, and a limiting nut 803 is sleeved on the external thread segment.

[0069] To achieve the above object, the application further provides a high-altitude operation device, wherein the high-altitude operation device comprises the car-mounted safety protection system according to the above description. Since the high-altitude operation device adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0070] In the description of the application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0071] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0072] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A boarding safety protection system, characterized by, The boarding safety protection system comprises: A boarding device comprising a telescopic arm frame (100), a jib (200), a work platform (300) and an arm extension rope wheel mechanism (400), the telescopic arm frame (100) is arranged on a rotary table (900), the jib (200) is arranged between the telescopic arm frame (100) and the work platform (300), and the arm extension rope wheel mechanism (400) is arranged on the telescopic arm frame (100) and is used for guiding the extension movement of the telescopic arm frame (100); A detection device (500) connected with the arm extension rope wheel mechanism (400) and used for detecting the tension index of the arm extension rope wheel mechanism (400); A control device in communication connection with the detection device (500) and configured to: determine whether at least one of the telescopic arm frame (100), the jib (200) and the work platform (300) is at risk of damage according to the tension index detected by the detection device (500); stop the current action if it is determined that there is a risk of damage; The arm extension rope wheel mechanism (400) comprises an arm extension pulley (401) and an arm extension rope assembly (402), one end of the arm extension rope assembly (402) is arranged on the basic arm (101), the other end of the arm extension rope assembly (402) passes around the arm extension pulley (401) and is arranged on the inner end of the telescopic arm (102), and the detection device (500) is connected with the end of the arm extension rope assembly (402) arranged on the basic arm (101) to detect the tension index of the arm extension rope assembly (402); Two rope grooves are formed on the arm extension pulley (401), the arm extension rope assembly (402) comprises a steel wire rope (403), a tension pulley (404) and a deformed pin shaft (405), the deformed pin shaft (405) passes through the tension pulley (404) and is arranged on the basic arm (101), the steel wire rope (403) comprises a tension section (406) and two telescopic sections (407), the tension section (406) passes around the tension pulley (404) and extends to the arm extension pulley (401) at both ends, the first ends of the two telescopic sections (407) are connected with the two ends of the tension section (406) one by one, the second ends of the two telescopic sections (407) pass around the two rope grooves one by one and are connected with the inner ends of the telescopic arms (102) respectively, and the detection device (500) is connected with the deformed pin shaft (405) and is used for detecting the tension index of the deformed pin shaft (405).

2. The boarding safety protection system according to claim 1, characterized in that, The telescopic arm support (100) comprises a basic arm (101), a telescopic arm (102) and a telescopic oil cylinder (105), the basic arm (101) is used for being mounted on the rotating table (900), the telescopic arm (102) is telescopically mounted in the basic arm (101) and is used for carrying the fly arm (200), and the telescopic oil cylinder (105) is mounted on the basic arm (101) and is in driving connection with the telescopic arm (102) to drive the telescopic arm (102) to perform telescopic movement.

3. The boarding safety protection system according to claim 2, characterized in that, The detection device (500) is a force sensor, and the control device is further configured to: In the case that the actual load detected by the force sensor exceeds the set load, it is determined that at least one of the telescopic arm support (100), the fly arm (200) and the working platform (300) is at risk of being damaged and the current action is controlled to stop.

4. The boarding safety protection system according to claim 2, characterized in that, The detection device (500) is a displacement sensor, and the control device is further configured to: In the case that the actual displacement detected by the displacement sensor exceeds the set displacement, it is determined that at least one of the telescopic arm support (100), the fly arm (200) and the working platform (300) is at risk of being damaged and the current action is controlled to stop.

5. The boarding safety protection system according to claim 3 or 4, characterized in that, The upper vehicle safety protection system further comprises a platform load sensor for detecting a real-time platform load of the working platform (300), an arm support length sensor for detecting a real-time arm support extension distance of the telescopic arm support (100), and an arm support angle sensor for detecting a real-time arm support angle of the telescopic arm support (100), and the control device is further configured to: The set load or the set displacement is determined according to the real-time platform load, the real-time arm support extension distance and the real-time arm support angle.

6. The boarding safety protection system according to claim 2, wherein A first connecting block (408) connected with the tensioning section (406) is arranged on the telescopic section (407), a stop support (600) is arranged on the basic arm (101), the stop support (600) is used for stopping the first connecting block (408) and forms a rope passing channel for the telescopic section (407) to pass through.

7. The boarding safety protection system according to claim 6, characterized in that An end of the tensioning section (406) is provided with a second connecting block (409), and the second connecting block (409) is detachably connected with the first connecting block (408) through a connecting pin shaft.

8. The boarding safety protection system according to claim 2, wherein The basic arm (101) is provided with a pulley mounting seat (700), the pulley mounting seat (700) comprises a connecting part (701) mounted on the basic arm (101) and a first lug plate part (702) and a second lug plate part (703) oppositely arranged on the connecting part (701), the tension pulley (404) is arranged between the first lug plate part (702) and the second lug plate part (703), and the deformed pin shaft (405) is sequentially arranged through the first lug plate part (702), the tension pulley (404) and the second lug plate part (703), and the detection device (500) is mounted on one of the first lug plate part (702) and the second lug plate part (703) and connected with the deformed pin shaft (405).

9. The boarding safety protection system according to claim 8, characterized in that, The basic arm (101) is provided with a fixing seat (800), and the connecting part (701) of the pulley mounting seat (700) is detachably mounted on the fixing seat (800).

10. An aerial work platform, characterized in that, The aerial work equipment comprises the vehicle-mounted safety protection system according to any one of claims 1 to 9.

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