Safety protection device for working platform and high-altitude operation equipment

Abstract

The utility model discloses a safety protection device for a working platform and high-altitude operation equipment, and relates to the technical field of high-altitude operation equipment, the safety protection device comprises a controller, a pull rope and two protection bin boxes, and the two protection bin boxes are arranged on guardrails on the two sides of the controller in the first direction correspondingly; each of the two protective bin boxes comprises a shell and a movable triggering piece arranged in the shell, the movable triggering piece is used for moving relative to the corresponding shell in the first direction, the pull rope is arranged between the controller and an operator and used for connecting the movable triggering pieces of the two protective bin boxes, and at least one of the two protective bin boxes is provided with a detection element; the detection element is in communication connection with the controller, and the detection element is configured to feed back a signal for cutting off the operation action to the controller under the triggering action of the corresponding movable triggering piece. The safety protection device for the working platform is simple in structure, convenient to operate, low in maintenance cost, large in protection range, safe and reliable.

Description

Technical Field

[0001] The present application relates to the technical field of aerial work equipment, and in particular to a safety protection device for a work platform and aerial work equipment. Background Art

[0002] The working platform of aerial work equipment is responsible for carrying personnel and construction materials, providing a safe and reliable temporary working area for aerial work.

[0003] Currently, due to the structure of the work platform, operators are often operating the platform controls. If an obstacle appears behind or above the operator and the operator fails to detect it in time or makes an operational error, serious consequences can easily occur. To this end, most existing aerial work equipment is equipped with safety protection devices, such as raising the platform railings behind the construction worker to provide physical safety protection. However, raising the railings increases the weight and structural complexity of the work platform, affecting the overall performance of the machine. It also cannot provide real-time, proactive protection, and the railings need to be replaced if they are deformed or damaged, making it uneconomical.

[0004] Therefore, how to provide a safety protection device for a work platform with a simple structure, easy operation, low maintenance cost, large protection range, and safety and reliability is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0005] The purpose of this application is to provide a safety protection device for a work platform and aerial work equipment, which has a simple structure, is easy to operate, has low maintenance costs, a large protection range, and is safe and reliable.

[0006] To achieve the above-mentioned objectives, the present application provides a safety protection device for a work platform, including a controller, which is used to be set on the work platform to control the start and stop of each working action. The safety protection device also includes a pull rope and two protection boxes. The two protection boxes are respectively arranged on the guardrails on both sides of the controller along the first direction. The two protection boxes each include an outer shell and a moving trigger member arranged in the outer shell. The moving trigger member is used to move relative to the corresponding outer shell along the first direction. The pull rope is arranged between the controller and the operator. The pull rope is used to connect the moving trigger members of the two protection boxes. At least one of the two protection boxes is provided with a detection element, which is communicatively connected to the controller. The detection element is configured to feedback a signal of cutting off the working action to the controller under the triggering action of the corresponding moving trigger member.

[0007] In some embodiments, the moving trigger is provided with a first guide boss on each of the two side walls in a second direction perpendicular to the first direction, and the shell is provided with a first guide slot on each of the two side walls in the second direction, and the two first guide bosses are respectively embedded in the two first guide slots to guide the movement of the moving trigger relative to the corresponding shell.

[0008] In some embodiments, the bottom wall of the moving trigger is provided with a second guide boss protruding in a third direction perpendicular to the second direction and the first direction, and the shell is further provided with a second guide slot, and the second guide boss is embedded in the second guide slot to guide the movement of the moving trigger relative to the corresponding shell.

[0009] In some embodiments, the two side walls of the moving trigger in the second direction are respectively provided with a preset gap from the two side walls of the shell in the second direction, and the bottom wall of the moving trigger is in contact with the bottom wall of the shell.

[0010] In some embodiments, the shell comprises a base and a cover plate, the cover plate is connected to the base to form a containing cavity containing the corresponding moving trigger, the cover plate is provided with one first guide slot, and the base is provided with the second guide slot and another first guide slot.

[0011] In some embodiments, an elastic member is arranged between the moving trigger and the corresponding shell, and the elastic member is used to provide an elastic force to the moving trigger to make the moving trigger have a tendency to move away from the controller.

[0012] In some embodiments, a first guide column is arranged on the side of the moving trigger away from the controller, an inner wall of the shell is provided with a second guide column arranged opposite to the first guide column, and two ends of the elastic member are respectively sleeved on the first guide column and the second guide column.

[0013] In some embodiments, the safety protection device further comprises a prompter arranged on the working platform and connected in communication with the controller, and the prompter is used to send a prompt signal to prompt the operator.

[0014] In some embodiments, the safety protection device further comprises a foot switch arranged on the working platform and connected in communication with the controller, and the foot switch is configured to be released and then pressed again after the detection element is released from the triggered state to enable the controller to control the start of each operation action.

[0015] The present application also provides aerial work equipment, including a working platform and any one of the safety protection devices described above, wherein the safety protection device is installed on the working platform.

[0016] With respect to the above-mentioned background technology, the safety protection device for a work platform provided in an embodiment of the present application includes a controller, which is used to be arranged on the work platform to control the start and stop of each working action. The safety protection device also includes a pull rope and two protection boxes. The two protection boxes are respectively arranged on the guardrails on both sides of the controller along the first direction. The two protection boxes both include an outer shell and a moving trigger member arranged in the outer shell. The moving trigger member is used to move relative to the corresponding outer shell along the first direction. The pull rope is arranged between the controller and the operator. The pull rope is used to connect the moving trigger members of the two protection boxes. At least one of the two protection boxes is provided with a detection element, which is communicatively connected to the controller. The detection element is configured to feedback a signal of cutting off the working action to the controller under the triggering action of the corresponding moving trigger member.

[0017] When an obstacle squeezes the operator's back, the operator's body tilts forward / downward and pushes the pull rope forward / downward. The pull rope pulls the mobile trigger parts connected at both ends, causing the mobile trigger parts at both ends to move straight from both ends to the middle. When the mobile trigger parts move to a position that can be detected by the detection element, the corresponding mobile trigger parts trigger the detection element. The detection element feeds back a signal to the controller to cut off the operation action. The controller cuts off the signal of the entire machine and controls all operation actions to stop, thereby limiting all functional operations.

[0018] The beneficial effects of the safety protection device for the work platform set up in this way mainly include: the safety protection device provided by the present application has a simple structure and is easy to operate. It can effectively prevent accidental touch and provide a larger safe and risk-avoiding space, so that the protection range is large and safe and reliable, avoiding injuries caused by continuous operation of the operator, effectively ensuring the safety of personnel, and improving the efficiency of high-altitude operations. In addition, compared with the traditional railings that need to be replaced after deformation or damage, the above-mentioned safety protection device can also reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0020] Figure 1 This is a schematic structural diagram of a safety protection device for a work platform in an embodiment of the present application;

[0021] Figure 2 for Figure 1 A schematic diagram of the internal structure of the protective compartment box in the safety protection device shown;

[0022] Figure 3 for Figure 2 A schematic diagram of the structure of the mobile trigger member in the protective compartment box shown;

[0023] Figure 4 This is a schematic diagram of the assembly of the safety protection device and the work platform used in the embodiment of the present application.

[0024] in:

[0025] 10-Safety protection device;

[0026] 11-Controller;

[0027] 12-pull rope;

[0028] 13-protective box, 131-housing, 1311-base, 1312-cover, 1313-first guide groove, 1314-second guide groove, 132-moving trigger, 1321-first guide boss, 1322-second guide boss, 1323-friction surface, 133-elastic member;

[0029] 14- detection element;

[0030] 15-foot switch;

[0031] 20-Working platform. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0034] It should be noted that the directional terms such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0035] Please refer to Figures 1 to 4 , Figure 1 This is a schematic structural diagram of a safety protection device for a work platform in an embodiment of the present application; Figure 2 for Figure 1A schematic diagram of the internal structure of the protective compartment box in the safety protection device shown; Figure 3 for Figure 2 A schematic diagram of the structure of the mobile trigger member in the protective compartment box shown; Figure 4 This is a schematic diagram of the assembly of the safety protection device and the work platform used in the embodiment of the present application.

[0036] The safety protection device 10 for the work platform 20 provided in the embodiment of the present application includes a controller 11. The controller 11 serves as a platform controller and is arranged on the work platform 20 to control the start and stop of each operating action.

[0037] Furthermore, the safety protection device 10 also includes a pull rope 12 and two protection boxes 13. The two protection boxes 13 are respectively arranged on the guardrails on both sides of the controller 11 along the first direction. The two protection boxes 13 both include an outer shell 131 and a movable trigger 132 arranged in the outer shell 131. The movable trigger 132 is used to move relative to the corresponding outer shell 131 along the first direction. The pull rope 12 is arranged between the controller 11 and the operator. The position of the pull rope 12 is higher than the controller 11. The pull rope 12 is used to connect the movable trigger 132 of the two protection boxes 13. At least one of the two protection boxes 13 is provided with a detection element 14. The detection element 14 is communicatively connected to the controller 11. The detection element 14 is used to detect the position change of the movable trigger 132. The detection element 14 is configured to feedback a signal of cutting off the operation action to the controller 11 under the triggering action of the corresponding movable trigger 132.

[0038] It should be noted that the first direction can be as follows: Figure 1 The X-axis direction is shown.

[0039] Of course, depending on actual needs, a detection element 14 can be installed at the bottom of at least one of the protective boxes 13. For example, a detection element 14 can be installed at the bottom of both protective boxes 13. When both detection elements 14 are triggered simultaneously, a cutting action can be performed. The detection element 14 can be a travel switch, a proximity switch, a pull-wire switch, a displacement sensor, or a laser ranging element.

[0040] The material of the mobile trigger member 132 can be a polymer material such as nylon, which can reduce friction resistance and act as a buffer. The pull rope 12 can be a nylon line, etc., so that the operator does not block the operating line of sight when working at high altitude.

[0041] In this way, when an obstacle squeezes the operator's back, the operator's body tilts forward / downward and pushes the pull rope 12 to move forward / downward, then the pull rope 12 pulls the mobile triggering parts 132 connected at both ends, causing the mobile triggering parts 132 at both ends to move in a straight line from both ends to the middle. When the mobile triggering parts 132 move to a position where they can be detected by the detection element 14, the corresponding mobile triggering parts 132 trigger the detection element 14, and the detection element 14 feeds back a signal to cut off the operation action to the controller 11. The controller 11 cuts off the entire machine signal and controls all operation actions to stop, thereby limiting all functional operations.

[0042] The safety protection device 10 for the work platform 20 set up in this way has the following beneficial effects: the safety protection device 10 provided in this application has a simple structure and is easy to operate. It can effectively prevent accidental touch and provide a larger safe and risk-avoiding space, so that the protection range is large and safe and reliable, avoiding injuries caused by continuous operation of the operator, effectively ensuring personnel safety, and improving high-altitude operation efficiency. In addition, compared with the traditional railings that need to be replaced after deformation or damage, the above-mentioned safety protection device 10 can also reduce maintenance costs.

[0043] In some embodiments, both side walls of the mobile trigger member 132 along the second direction are provided with a first guide boss 1321, and the two first guide bosses 1321 are symmetrically arranged on both sides of the mobile trigger member 132. The second direction is perpendicular to the first direction, and both side walls of the shell 131 along the second direction are provided with a first guide groove 1313. The two first guide bosses 1321 are respectively embedded in the two first guide grooves 1313 to guide the movement of the mobile trigger member 132 relative to the corresponding shell 131.

[0044] It should be noted that the second direction can be as follows: Figure 1 The Y-axis direction is shown.

[0045] Among them, the first guide groove 1313 can be an elongated slide groove, and correspondingly, the first guide boss 1321 can be an elongated slider. The length of the elongated slide groove is greater than the length of the elongated slider, and the width of the elongated slide groove is adapted to the width of the elongated slider to ensure that the two first guide bosses 1321 can slide in the two first guide grooves 1313 respectively along the first direction.

[0046] In some embodiments, the bottom wall of the mobile trigger member 132 is provided with a second guide boss 1322, and the second guide boss 1322 protrudes along a third direction. The third direction, the second direction and the first direction are perpendicular to each other. The shell 131 is also provided with a second guide groove 1314, and the second guide boss 1322 is embedded in the second guide groove 1314 to guide the movement of the mobile trigger member 132 relative to the corresponding shell 131.

[0047] It should be noted that the third direction can be as follows: Figure 1 The Z-axis direction is shown.

[0048] In this way, the movable trigger member 132 is provided with guide bosses on three sides, thereby ensuring that the movable trigger member 132 can slide along the first direction under the pulling action of the pull rope 12, thereby successfully triggering the detection element 14, ensuring that the entire machine signal can be cut off in an unexpected situation.

[0049] In some embodiments, the two side walls of the movable trigger member 132 along the second direction are respectively disposed with a predetermined gap from the two side walls of the housing 131 along the second direction, and the bottom wall of the movable trigger member 132 contacts the bottom wall of the housing 131. To this end, friction surfaces 1323 are provided on both sides of the second guide boss 1322 of the movable trigger member 132.

[0050] That is to say, the two side walls of the mobile trigger member 132 along the second direction are not in contact with the two side walls of the shell 131 along the second direction, while the bottom wall of the mobile trigger member 132 is in contact with the bottom wall of the shell 131. In this way, during the sliding process of the mobile trigger member 132, only one surface of the mobile trigger member 132 and the shell 131 is in contact, and the friction surface 1323 on the mobile trigger member 132 rubs against the bottom wall of the base 1311, and the other two surfaces are not in contact, thereby ensuring the smooth sliding of the mobile trigger member 132 and preventing jamming.

[0051] In some embodiments, the housing 131 includes a base 1311 and a cover 1312. The cover 1312 is connected to the base 1311 to form a receiving cavity for accommodating the corresponding mobile trigger member 132. A first guide groove 1313 is provided on the cover 1312, and a second guide groove 1314 and another first guide groove 1313 are provided on the base 1311.

[0052] In this embodiment, the cover 1312 is L-shaped, and a first guide groove 1313 is provided on the side wall of the cover 1312 opposite to the base 1311 , so that when the cover 1312 is connected to the base 1311 , the two first guide grooves 1313 can be arranged opposite to each other.

[0053] In some embodiments, an elastic member 133 is provided between the mobile trigger member 132 and the corresponding housing 131 . The elastic member 133 is used to provide elastic force to the mobile trigger member 132 so that the mobile trigger member 132 tends to move away from the controller 11 .

[0054] To facilitate the assembly of the elastic member 133, a first guide post is provided on the side of the mobile trigger member 132 facing away from the controller 11, and a second guide post is provided on the inner wall of the shell 131. The second guide post is arranged opposite to the first guide post, and the two ends of the elastic member 133 are respectively sleeved on the first guide post and the second guide post.

[0055] For example, the elastic member 133 may be a tension spring, and the number of the tension springs may be two, which are arranged side by side on one side of the mobile trigger member 132 away from the pull rope 12. The two tension springs can ensure that the elastic force applied to the mobile trigger member 132 is stable.

[0056] In this way, the elastic member 133 is stretched due to the slippage of the mobile trigger member 132. At the same time, after the tension on the pull cord 12 is released, the elastic member 133 can automatically reset the mobile trigger member 132 due to its rebound action. The structure is simple, and the elastic force of the elastic member must be overcome to move the mobile trigger member 132. The elastic member 133 can also cushion the operator's movements, relieve the pressure on the operator, and protect the operator's safety. The trigger position of the detection element 14 is set a certain distance from the initial position of the mobile trigger member 132, and the elastic member 133 has a certain elastic force. Only when the operator applies a large force to the pull cord 12 or tilts the body to push the pull cord 12 to a certain extent can the detection element 14 be triggered. This can prevent accidental triggering due to improper operation by the operator, which may affect the efficiency of high-altitude operations.

[0057] In addition, the two movable trigger members 132 are arranged symmetrically on both sides. The displacement of the movable trigger member 132 when pulled is much smaller than the distance that the human body can tilt toward the controller 11, and the protection range is large. After the detection element 14 is triggered, the movable trigger member 132 can still move to the middle position. When a collision or squeezing occurs, the body still has more space / distance to avoid danger, and the elastic members 133 on both sides can also absorb part of the collision and squeezing force, which is safer.

[0058] In some embodiments, the safety protection device 10 further includes a prompter, which is arranged on the working platform 20 and is communicatively connected to the controller 11 . The prompter is used to send a prompt signal to prompt the operator.

[0059] For example, the prompter can be an audible and visual alarm and / or a voice alarm. When the corresponding movable trigger member 132 triggers the detection element 14, the detection element 14 feeds back a signal to the controller 11 to cut off the operation action. The controller 11 simultaneously cuts off the entire machine signal and controls the audible and visual alarm to emit a sound and light alarm. At the same time, the voice alarm emits a voice prompt to alert the operator to the dangerous situation. When the human body stops applying pressure to the pull rope 12, the movable trigger member 132 returns to its position under the action of the elastic member 133 and disengages from the detection element 14. At this time, the audible and visual alarm and the voice alarm stop sounding.

[0060] In some embodiments, the safety protection device 10 also includes a foot switch 15, which is used to be set on the work platform 20 and is communicated with the controller 11. After the detection element 14 is released from the trigger state, the foot switch 15 is configured to be released and then pressed again to enable the controller 11 to control the start of each working action.

[0061] That is to say, when the human body stops applying pressure to the pull rope 12, the mobile trigger member 132 returns to its position under the action of the elastic member 133 and disengages from the detection element 14. If the foot switch 15 is still in the triggered state at this time, the controller 11 cannot perform functional operations. The foot switch 15 must be released and then pressed again before the controller 11 can resume functional operations.

[0062] In summary, the present application provides a safety protection device 10 for a work platform 20 that is simple in structure, automatically resets, is easy to operate, has low maintenance costs, provides a wide range of protection, and is safe and reliable. The structure of the present application can effectively prevent accidental touches and provide a large safe refuge space, thereby avoiding injuries caused by continuous operation by operators, effectively ensuring personnel safety, and improving the efficiency of aerial work.

[0063] The aerial work equipment provided in the present application includes a work platform 20 and also includes the safety protection device 10 for the work platform 20 described in the above specific embodiment. The safety protection device 10 is installed on the work platform 20.

[0064] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0065] The above is a detailed introduction to the safety protection device for work platforms and aerial work equipment provided by this application. Specific examples are used herein to illustrate the principles and implementation methods of this application. The description of the above embodiments is only intended to help understand the solution and core ideas of this application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of this application.

Claims

1. A safety protection device for a work platform, comprising a controller, which is arranged on the work platform to control the start and stop of each operation action, characterized in that: The safety protection device also includes a pull rope and two protection boxes, and the two protection boxes are respectively arranged on the guardrails on both sides of the controller along the first direction. The two protection boxes each include an outer shell and a movable trigger member arranged in the outer shell. The movable trigger member is used to move relative to the corresponding outer shell along the first direction. The pull rope is arranged between the controller and the operator. The pull rope is used to connect the movable trigger members of the two protection boxes. At least one of the two protection boxes is provided with a detection element, and the detection element is communicatively connected to the controller. The detection element is configured to feedback a signal of cutting off the operation action to the controller under the triggering action of the corresponding movable trigger member.

2. The safety protection device for a working platform according to claim 1, characterized in that: The two side walls of the movable trigger member along the second direction are provided with a first guide boss, the second direction is perpendicular to the first direction, and the two side walls of the shell along the second direction are provided with a first guide groove, and the two first guide bosses are respectively embedded in the two first guide grooves to guide the movement of the movable trigger member relative to the corresponding shell.

3. The safety protection device for a working platform according to claim 2, characterized in that: The bottom wall of the mobile trigger member is provided with a second guide boss, which protrudes along a third direction. The third direction, the second direction and the first direction are perpendicular to each other. The shell is also provided with a second guide groove, and the second guide boss is embedded in the second guide groove to guide the movement of the mobile trigger member relative to the corresponding shell.

4. The safety protection device for a working platform according to claim 3, characterized in that: The two side walls of the movable trigger member along the second direction are respectively arranged with preset gaps from the two side walls of the housing along the second direction, and the bottom wall of the movable trigger member contacts the bottom wall of the housing.

5. The safety protection device for a working platform according to claim 3, characterized in that: The housing includes a base and a cover plate, the cover plate is connected to the base to form a receiving cavity for receiving the corresponding movable trigger member, the cover plate is provided with a first guide groove, and the base is provided with the second guide groove and another first guide groove.

6. The safety protection device for a working platform according to any one of claims 1 to 5, characterized in that: An elastic member is provided between the movable trigger member and the corresponding housing, and the elastic member is used to provide elastic force to the movable trigger member so that the movable trigger member tends to move away from the controller.

7. The safety protection device for a working platform according to claim 6, characterized in that: A first guide post is provided on the side of the mobile trigger member facing away from the controller, a second guide post is provided on the inner wall of the shell, the second guide post is arranged opposite to the first guide post, and both ends of the elastic member are respectively sleeved on the first guide post and the second guide post.

8. The safety protection device for a working platform according to any one of claims 1 to 5, characterized in that: The safety protection device further comprises a prompter, which is used to be arranged on the working platform and is communicatively connected with the controller. The prompter is used to send a prompt signal to prompt the operator.

9. The safety protection device for a working platform according to any one of claims 1 to 5, characterized in that: The safety protection device also includes a foot switch, which is used to be set on the work platform and is communicated with the controller. After the detection element is released from the trigger state, the foot switch is configured to be released and then pressed again to enable the controller to control the start of each working action.

10. A high-altitude working equipment, comprising a working platform, characterized in that: It also includes a safety protection device according to any one of claims 1 to 9, wherein the safety protection device is installed on the work platform.

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