Portable construction safety monitoring device for elevators

Abstract

This invention relates to the field of safety monitoring technology and discloses a portable elevator construction safety monitoring device, comprising: a mounting box; mounting lugs fixedly connected to the top of the mounting box; lug locking screws located on the front side of the mounting lugs and threadedly connected to them; a control unit located on the rear side of the mounting box and fixedly connected to it; and a sliding rail fixedly connected to the top of the mounting box. This portable elevator construction safety monitoring device, by incorporating three different sensors connected to an existing elevator via mounting lugs and lug locking screws, monitors workers on the elevator. Furthermore, by adjusting the position of the posture adjustment seat and the angle of the sensors, blind spots are avoided from negatively impacting monitoring operations. The dual-monitoring layout further enhances the reliability of the monitoring process.

Description

Technical Field

[0001] This invention relates to the field of safety monitoring technology, specifically a portable elevator construction safety monitoring device. Background Technology

[0002] Aerial work platforms are hydraulic mechanical equipment used for high-altitude operations and maintenance. They offer smooth lifting, an attractive appearance, and easy mobility, making them a valuable tool for various high-altitude work units, including indoor maintenance and outdoor curtain wall cleaning.

[0003] For example, Chinese patent CN110104595A discloses a positioning mechanism for a scissor lift, which can prevent the safety risks caused by the lift moving during operation;

[0004] Chinese patent CN110626904A discloses a method for predicting the tilt angle of an elevator based on a pressure sensor and determining whether the equipment is in a safe operating state.

[0005] Chinese patent CN114291678A discloses a multi-functional safety monitoring device for construction hoists, which uses monitoring data from wind speed and direction sensors and pressure sensors to determine the safety status of construction hoists.

[0006] Chinese patent CN114789953A discloses a safety self-diagnosis device for construction hoists, which can monitor the hoist's operating status in real time through various sensors such as speed sensors, motor current transformers, weight sensors, and brake current transformers.

[0007] In the aforementioned existing comparative patents, the safety protection measures for aerial work platforms mainly focus on the equipment itself, using multiple types of sensors to monitor the operating status of the platform and determine its safety status in real time.

[0008] When construction workers are working on the elevator platform, in addition to facing the risks brought by the elevator's operation, they also need to prevent being hit by objects at height during the ascent. However, the existing safety monitoring devices cannot directly monitor the construction workers and can only prevent collisions with the elevator by means of mechanical limit switches, point-type infrared distance sensors, etc.

[0009] These protective measures not only fail to directly prevent personnel from being bumped or bruised, but also have drawbacks such as low level of intelligence, small monitoring range, and slow response speed. Therefore, they cannot effectively reduce the risk of collision of the elevator itself in complex high-altitude work areas.

[0010] In addition, the aforementioned devices for monitoring the operating status of elevators all require significant modifications to the elevators, are not convenient to use, and cannot be applied to the large number of existing elevators, thus limiting their application and promotion.

[0011] To address the aforementioned shortcomings, this invention proposes a novel portable elevator construction safety monitoring device to solve the problems mentioned above. Summary of the Invention

[0012] (a) Technical problems to be solved

[0013] To address the shortcomings of existing technologies, this invention provides a portable elevator construction safety monitoring device, which solves many problems existing in the prior art.

[0014] (II) Technical Solution

[0015] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A portable elevator construction safety monitoring device, comprising:

[0016] Install the housing (1); and

[0017] Install the mounting lug (2), which is fixedly connected to the top of the mounting box (1);

[0018] The lug locking screw (3) is located on the front side of the mounting lug (2) and is threadedly connected to the mounting lug (2);

[0019] Control unit (4) is disposed on the rear side of the mounting box (1) and is fixedly connected to the mounting box (1);

[0020] A sliding track (5) is fixedly connected to the top of the mounting box (1) and located behind the mounting lug (2);

[0021] An absolute linear encoder scale (6) is disposed between the mounting lug (2) and the sliding rail (5) and is fixedly connected to the top of the mounting housing (1);

[0022] The attitude adjustment seat (8) is movably connected to the sliding rail (5) and is located above the absolute linear encoder grid scale (6);

[0023] The sensor (7) is fixedly connected to the attitude adjustment seat (8) by screws.

[0024] The beneficial effects of this invention are:

[0025] 1) This portable elevator construction safety monitoring device can be directly hung on the elevator's guardrail by installing the mounting lug 2, as shown in the attached diagram of the instruction manual. Figure 10As shown, during this process, the mounting box 1 and the elevator are physically connected by the locking screw 3 of the hanging ear and the guardrail. Compared with other monitoring equipment, this device is small in size and easy to install directly without changing the structure of the elevator itself, and is suitable for existing elevator structures.

[0026] The sensor 7 monitors the workers on the elevator. Multiple posture adjustment seats 8 can be installed on the same sliding rail 5 to make the monitoring range more comprehensive and avoid blind spots during the monitoring process. By adjusting the positional relationship of the posture adjustment seats 8, the device can perform a more appropriate monitoring function according to different requirements.

[0027] During the monitoring process, if staff, the elevator, or other objects in the construction area get too close, an alarm will be triggered, and the elevator will be controlled to slow down or stop suddenly to avoid danger.

[0028] 2) The portable elevator construction safety monitoring device changes the angle of the sensor 7 by adjusting the posture seat 8, thereby changing the monitoring range and making the device flexible. In actual use, it can fully monitor the workers in the elevator and ensure the accuracy of the monitoring.

[0029] Furthermore, by setting up three different sensors 7—a ToF sensor, a millimeter-wave radar sensor, and a depth camera sensor—the device can adapt to different working requirements and environments. Moreover, by setting up the three sensors 7 simultaneously, the different sensors 7 complement each other, increasing the accuracy of monitoring.

[0030] And refer to the attached diagrams in the instruction manual. Figure 12 The dual monitoring layout shown in the image allows for complete, unobstructed monitoring of staff.

[0031] Based on the above technical solution, the present invention can be further supplemented as follows.

[0032] Furthermore, the mounting housing (1) is composed of rectangular blocks and rectangular grooves, wherein:

[0033] A rectangular groove is formed on the rear sidewall of the rectangular block.

[0034] Furthermore, there are two mounting ears (2), which are fixedly connected to the top of the mounting box (1) and are symmetrically distributed.

[0035] Furthermore, the mounting lug (2) includes:

[0036] The L-shaped fixing bracket is fixedly connected to the top of the mounting box (1);

[0037] A threaded hole is provided on the front side of the L-shaped bracket.

[0038] Furthermore, the posture adjustment seat (8) includes:

[0039] The slider base (81) is movably connected to the sliding track (5) and can move along the sliding track (5), but cannot move upward;

[0040] A linear encoder reading head (82) is fixedly connected to the front sidewall of the slider base (81);

[0041] A movable locking screw (83) is threaded to the slider base (81) and passes through the slider base (81);

[0042] The X-axis rotary table (84) is hinged to the slider base (81);

[0043] The first absolute angle encoder (85) is fixedly connected to the slider base (81) and interconnected with the X-axis rotary table (84);

[0044] The X-axis locking screw (86) is threaded to the top of the slider base (81) and contacts the X-axis rotary table (84);

[0045] The Z-axis rotary table (87) is movably connected to the X-axis rotary table (84) and extends through the bottom of the X-axis rotary table (84);

[0046] The second absolute angle encoder (88) is fixedly connected to the X-axis rotary table (84) and interconnected with the Z-axis rotary table (87);

[0047] The Z-axis locking screw (89) is threaded to the front side wall of the X-axis rotary table (84) and is in contact with the Z-axis rotary table (87).

[0048] Furthermore, the slider base (81) includes:

[0049] The movable slider is movably connected to the sliding track (5) and is adapted to the sliding track (5);

[0050] Two limiting ears are fixedly connected to the top of the movable slider and are symmetrically distributed on the left and right sides;

[0051] Two large threaded holes are provided on the top of the movable slider and are adapted to the movable locking screw (83);

[0052] Two small threaded holes are respectively opened on the top of the two limiting ears and are adapted to the X-axis locking screw (86).

[0053] Furthermore, the X-axis rotary table (84) includes:

[0054] A bracket, located between the two aforementioned limiting ears;

[0055] Two hinge shafts are fixedly connected to the left and right side walls of the frame, respectively, and are movably connected to two limit ears, and are connected to the first absolute angle encoder (85) and are tightly fitted with the X-axis locking screw (86).

[0056] Furthermore, the Z-axis rotary table (87) includes:

[0057] Mounting top frame, which is located on top of the X-axis rotary table (84);

[0058] A connecting shaft is fixedly connected to the bottom of the mounting bracket and passes through the X-axis rotary table (84), and is movably connected to the X-axis rotary table (84).

[0059] Furthermore, the sensor (7) can be any one of a ToF sensor, a millimeter-wave radar sensor, and a depth camera sensor.

[0060] Furthermore, the control unit (4) is connected to the absolute linear encoder scale (6), sensor (7), linear encoder reading head (82), first absolute angle encoder (85) and second absolute angle encoder (88) via signal connection, enabling signal transmission and interconnection with the elevator control system for control. Attached Figure Description

[0061] Figure 1 This is an exploded view of the structure of the present invention;

[0062] Figure 2 This is a rear-view three-dimensional view of the structure of the present invention;

[0063] Figure 3 This is a front view of the structure of the present invention;

[0064] Figure 4 This is an exploded view of the structure of the present invention;

[0065] Figure 5 This is a three-dimensional schematic diagram of the structure of the present invention;

[0066] Figure 6 This is a two- or three-dimensional schematic diagram of the structural posture of the present invention;

[0067] Figure 7 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0068] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0069] Figure 9 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0070] Figure 10 This is a schematic diagram of the actual installation structure of the present invention;

[0071] Figure 11 This is a schematic diagram illustrating the monitoring range of the present invention;

[0072] Figure 12 This is a schematic diagram illustrating the installation process of the present invention in actual use.

[0073] In the diagram: 1. Mounting housing; 2. Mounting lugs; 3. Lug locking screws; 4. Control unit; 5. Sliding rail; 6. Absolute linear encoder scale; 7. Sensor; 8. Attitude adjustment seat; 81. Slider base; 82. Linear encoder reading head; 83. Moving locking screw; 84. X-axis rotary table; 85. First absolute angle encoder; 86. X-axis locking screw; 87. Z-axis rotary table; 88. Second absolute angle encoder; 89. Z-axis locking screw. Detailed Implementation

[0074] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0075] Example 1:

[0076] refer to Figure 1-5 as well as Figure 9 A portable elevator construction safety monitoring device is provided. The device can be hung on the guardrail of the elevator by setting the mounting lug 2 on the top of the mounting box 1. By rotating the locking screw 3 of the lug, it can be tightly fitted to the guardrail, so that the device can be connected and fixed to the guardrail. At this time, the sliding rail 5, the posture adjustment seat 8 and the sensor 7 located on the top of the mounting box 1 are all fixedly connected to the guardrail of the elevator.

[0077] The device has a simple connection structure and connects to the existing elevator railing without requiring any changes to the elevator's internal structure. While preserving the original structure of the existing elevator, the sensor can monitor the workers at the top of the elevator. Furthermore, the simple connection structure makes the device easy and simple to install and disassemble. Compared to the method in the comparative patent that requires changes to the existing elevator structure, this device is more applicable and has the advantage of being more widely promoted.

[0078] Furthermore, by setting the linear encoder reading head 82 and the absolute linear encoder grid scale 6 to cooperate with each other, a complete absolute linear encoder is formed, thereby monitoring the position of the attitude adjustment seat 8 and transmitting its position information to the control unit 4 in the form of data;

[0079] The attitude adjustment seat 8 and the sliding rail 5 cooperate with each other, allowing the attitude adjustment seat 8 to move along the sliding rail 5. By rotating the moving locking screw 83, it is separated from the sliding rail 5. At this time, the position of the attitude adjustment seat 8 can be moved along the sliding rail 5, and the position of the sensor 7 will also change accordingly. During this process, the monitoring range of the sensor 7 can be changed, which is convenient for adjustment according to the actual situation and increases flexibility. When the position changes, the moving locking screw 83 is rotated in the opposite direction to make it fit tightly against the sliding rail 5 again, thus realizing the re-fixation of the attitude adjustment seat 8 after the position is changed.

[0080] By rotating the X-axis locking screw 86, it can rotate with the X-axis rotary table 84 around the hinge axis. During this process, the first absolute angle encoder 85 transmits the rotation angle information of the X-axis rotary table 84 to the control unit 4. When the angle of the X-axis rotary table 84 changes, the X-axis locking screw 86 is rotated in the opposite direction, so that the X-axis locking screw 86 and the hinge axis are tightly engaged again, thereby fixing the position of the X-axis rotary table 84 again.

[0081] By rotating the Z-axis locking screw 89, it can rotate with the Z-axis rotary table 87 around the connecting shaft, thereby changing the monitoring angle of the sensor 7. The rotation angle information is transmitted to the control unit 4 through the second absolute angle encoder 88. When the angle of the Z-axis rotary table 87 changes, the Z-axis locking screw 89 is rotated in the opposite direction to make it fit tightly with the connecting shaft again. At this time, the angle of the Z-axis rotary table 87 is fixed.

[0082] The changes in the angles of the Z-axis rotary table 87 and the X-axis rotary table 84 can be found in the attached diagram of the instruction manual. Figure 6 ;

[0083] The device adjusts the angle and position of sensor 7 to ensure that the monitoring range can fully monitor the workers' work and avoid blind spots.

[0084] Furthermore, by setting up a ToF sensor, a millimeter-wave radar sensor, and a depth camera sensor, the above three sensors 7 provide comprehensive monitoring of the staff. By utilizing the different detection ranges, detection accuracies, and data characteristics of the different sensors 7, they can compensate for each other's shortcomings, thereby improving the detection range and imaging accuracy of the entire device.

[0085] Refer to the attached diagram in the instruction manual. Figure 12By installing the monitoring device in this patent on the guardrails on both sides of the elevator, the activity range of the staff inside the elevator can be completely covered, thereby completely avoiding the occurrence of blind spots in monitoring.

[0086] The device processes and integrates the data transmitted by the three sensors 7, and calculates the safe distance between workers, the elevator and other objects in the construction area in real time based on the detection data. Once a safety risk is detected, it will issue an alarm and control the elevator to slow down, stop suddenly and other avoidance actions.

[0087] Example 2, based on Example 1, see [link / reference] Figure 8 and Figure 9 The number of attitude adjustment seats 8 can be adjusted by controlling the number of attitude adjustment seats 8 and sensors 7, which can be increased or decreased according to actual conditions. When there are three attitude adjustment seats 8, they can cover the attached drawings in the instruction manual. Figure 12 The area of ​​the work platform in a scissor lift;

[0088] Depending on the actual situation, the number can be increased or reduced to two or one. When monitoring different types of elevators, the monitoring effect can be maximized while reducing the purchase cost.

[0089] Furthermore, the device has a simple structure, small size, and high portability. It can be carried manually or stacked for transport, and can be used immediately after installation, making it highly applicable and practical.

[0090] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0091] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable construction hoist safety monitoring device, characterised in that, include: Mounting housing (1); and mounting lugs (2), which are fixedly connected to the top of the mounting housing (1); The lug locking screw (3) is located on the front side of the mounting lug (2) and is threadedly connected to the mounting lug (2); Control unit (4), which is located on the rear side of the mounting box (1) and is fixedly connected to the mounting box (1); The sliding track (5) is fixedly connected to the top of the mounting box (1) and is located behind the mounting lug (2); An absolute linear encoder scale (6) is disposed between the mounting lug (2) and the sliding rail (5) and is fixedly connected to the top of the mounting housing (1); The attitude adjustment seat (8) is movably connected to the sliding rail (5) and is located above the absolute linear encoder grid scale (6); The sensor (7) is fixedly connected to the attitude adjustment seat (8) by screws; By setting up three different sensors (7) – a ToF sensor, a millimeter-wave radar sensor, and a depth camera sensor – the device can be adapted to different working requirements and environments. Furthermore, by setting up the three sensors (7) simultaneously, the different sensors (7) complement each other, increasing the accuracy of monitoring. The posture adjustment seat (8) includes: The slider base (81) is movably connected to the sliding track (5) and can move along the sliding track (5); A linear encoder reading head (82) is fixedly connected to the front sidewall of the slider base (81); A movable locking screw (83) is threaded to the slider base (81) and passes through the slider base (81). The X-axis rotary table (84) is hinged to the slider base (81); The first absolute angle encoder (85) is fixedly connected to the slider base (81) and interconnected with the X-axis rotary table (84); The X-axis locking screw (86) is threaded to the top of the slider base (81) and contacts the X-axis rotary table (84); Z-axis rotary table (87), which is movably connected to the X-axis rotary table (84) and extends through the bottom of the X-axis rotary table (84); The second absolute angle encoder (88) is fixedly connected to the X-axis rotary table (84) and interconnected with the Z-axis rotary table (87); The Z-axis locking screw (89) is threaded to the front side wall of the X-axis rotary table (84) and is in contact with the Z-axis rotary table (87).

2. A portable construction hoist safety monitoring device according to claim 1, wherein: The mounting box (1) is composed of a rectangular block and a rectangular groove, wherein the rectangular groove is formed on the rear side wall of the rectangular block.

3. The portable elevator construction safety monitoring device according to claim 1, characterized in that: There are two mounting ears (2), which are fixedly connected to the top of the mounting box (1) and are symmetrically distributed.

4. The portable elevator construction safety monitoring device according to claim 1, characterized in that: The mounting lug (2) includes: an L-shaped fixing bracket, which is fixedly connected to the top of the mounting box (1); and a threaded hole, which is opened on the front side of the L-shaped fixing bracket.

5. The portable elevator construction safety monitoring device according to claim 1, characterized in that: The slider base (81) includes: The movable slider is movably connected to the sliding track (5) and is adapted to the sliding track (5); Two limiting ears are fixedly connected to the top of the movable slider and are symmetrically distributed on the left and right sides; Two large threaded holes are provided on the top of the movable slider and are adapted to the movable locking screw (83); Two small threaded holes are respectively opened on the top of the two limiting ears and are adapted to the X-axis locking screw (86).

6. A portable elevator construction safety monitoring device according to claim 5, characterized in that: The X-axis rotary table (84) includes: A bracket, located between the two aforementioned limiting ears; Two hinge shafts are fixedly connected to the left and right side walls of the frame, respectively, and are movably connected to two limit ears, respectively, and are connected to the first absolute angle encoder (85), which is in close contact with the X-axis locking screw (86).

7. The portable elevator construction safety monitoring device according to claim 1, characterized in that: The Z-axis rotary table (87) includes: The mounting bracket is located on top of the X-axis rotary table (84); A connecting shaft is fixedly connected to the bottom of the mounting bracket and passes through the X-axis rotary table (84), and is movably connected to the X-axis rotary table (84).

8. The portable elevator construction safety monitoring device according to claim 1, characterized in that: The sensor (7) can be any one of a ToF sensor, a millimeter-wave radar sensor, and a depth camera sensor.

9. A portable elevator construction safety monitoring device according to claim 1, characterized in that: The control unit (4) is connected to the absolute linear encoder scale (6), sensor (7), linear encoder reading head (82), first absolute angle encoder (85) and second absolute angle encoder (88) for signal transmission, and can be connected to the control system of the elevator for control.

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