Work bar structure and aerial work boom truck

Abstract

The utility model discloses a work bar structure and a high-altitude operation boom truck. The work bar structure comprises a work bar; the first mounting bracket is vertically mounted at the bottom of the working column and is positioned on the first side edge of the working column; the second mounting bracket is vertically mounted at the bottom of the working column and is positioned on the second side edge of the working column; the second side edge is opposite to the first side edge; the infrared sensor device comprises an infrared sensor emitter and an infrared sensor receiver, the infrared sensor emitter is arranged on the first mounting bracket, the infrared sensor receiver is arranged on the second mounting bracket, and an infrared beam formed between the infrared sensor receiver and the infrared sensor emitter is parallel to the bottom of the working column; and the control device is arranged on the working column and electrically connected with the infrared sensor device, and the control device is used for controlling the working column to stop descending under the condition that the infrared light beams are shielded. The bottom of the work bar can be prevented from touching the ground, and the failure rate of equipment is reduced.

Description

Technical Field

[0001] This application relates to the technical field of aerial work platform booms, and in particular to a work platform structure and an aerial work platform boom. Background Technology

[0002] Aerial work platforms are high-performance mechanical devices primarily used in locations requiring high-altitude operations, such as construction, bridge building, power, and mining industries. They can quickly transport workers and equipment to designated work positions, offering numerous advantages including high efficiency, safety, flexibility, environmental friendliness, energy saving, and cost-effectiveness. However, during use, operators often allow the bottom of the work platform to touch the ground for easy access or material handling. This pressure causes the bottom of the work platform to be squeezed against the ground or obstacles, resulting in elastic or inelastic deformation of the work platform and its components. Over time, this can damage sensors or cause electrical signal drift, increasing the equipment's failure rate. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a workbench structure that can prevent the bottom of the workbench from touching the ground, thereby reducing the equipment failure rate.

[0004] This application also proposes an aerial work platform with the above-mentioned working platform structure.

[0005] The workbench structure according to the first aspect of this application includes:

[0006] Work Column;

[0007] The first mounting bracket is vertically installed at the bottom of the work rail and located on the first side of the work rail;

[0008] The second mounting bracket is vertically mounted at the bottom of the work rail and located on the second side of the work rail; the second side is opposite to the first side.

[0009] An infrared sensor device includes an infrared sensor transmitter and an infrared sensor receiver. The infrared sensor transmitter is mounted on a first mounting bracket, and the infrared sensor receiver is mounted on a second mounting bracket. The infrared beam formed between the infrared sensor receiver and the infrared sensor transmitter is parallel to the bottom of the work rail.

[0010] A control device is disposed on the work rail and electrically connected to the infrared sensor device. The control device is used to control the work rail to stop descending when the infrared beam is blocked.

[0011] The workbench structure according to the embodiments of this application has at least the following beneficial effects:

[0012] An infrared sensor device can generate an infrared beam at the bottom of the work platform. When the infrared beam is detected to be blocked, it indicates that there is an obstacle at the bottom of the work platform. At this time, the work platform is controlled to stop descending, which can prevent the obstacle from touching the bottom of the work platform, thereby reducing the failure rate of the equipment.

[0013] According to some embodiments of this application, it also includes:

[0014] A first limit switch is disposed on the first mounting bracket at one end away from the bottom of the work rail. The distance between the first limit switch and the bottom of the work rail is greater than the distance between the infrared sensor transmitter and the bottom of the work rail. The first limit switch is electrically connected to the control device.

[0015] The second limit switch is located on the second mounting bracket at one end away from the bottom of the work rail. The distance between the second limit switch and the bottom of the work rail is greater than the distance between the infrared sensor receiver and the bottom of the work rail. The second limit switch is electrically connected to the control device.

[0016] The first pressure rod structure has one end movably connected to the bottom of the work rail, and the other end is located directly below the first limit switch. The other end of the first pressure rod structure can move towards or away from the first limit switch to trigger or stop triggering the first limit switch.

[0017] The second pressure rod structure has one end movably connected to the bottom of the work rail, and the other end located directly below the second limit switch. The other end of the second pressure rod structure can move towards or away from the second limit switch to trigger or stop triggering the second limit switch. The control device is also used to control the work rail to stop descending and moving left and right when the first limit switch or the second limit switch is triggered.

[0018] According to some embodiments of this application, the first pressure bar structure includes:

[0019] The first support rod has one end movably connected to the bottom of the work rail and located between the first mounting bracket and the second mounting bracket, and the other end can move towards or away from the first mounting bracket.

[0020] A first damping structure is disposed between the first support rod and the bottom of the work rail. The first damping structure is used to limit the rotation angle of the first support rod relative to the bottom of the work rail, so that the distance between the other end of the first support rod and the first mounting bracket is less than the distance between one end of the first support rod and the first mounting bracket.

[0021] The first pressure rod has one end connected to the other end of the first support rod, and the other end extends away from the first support rod. The first pressure rod is located directly below the first limit switch.

[0022] According to some embodiments of this application, a first reset member is further provided between the first support rod and the bottom of the work rail, and the first reset member is located on the side close to the first mounting bracket. The first reset member is used to reset the first pressure rod to a position where the first limit switch is not triggered after the pressure of the obstacle stops at the bottom of the first pressure rod.

[0023] According to some embodiments of this application, the first reset member employs an elastic device.

[0024] According to some embodiments of this application, the second pressure bar structure includes:

[0025] The second support rod has one end movably connected to the bottom of the work rail and located between the first mounting bracket and the second mounting bracket, and the other end can move towards or away from the second mounting bracket; the distance between one end of the second support rod and the second mounting bracket is less than the distance between one end of the first support rod and the second mounting bracket.

[0026] A second damping structure is disposed between the second support rod and the bottom of the work rail. The second damping structure is used to limit the rotation angle of the second support rod relative to the bottom of the work rail, so that the distance between the other end of the second support rod and the second mounting bracket is less than the distance between one end of the second support rod and the second mounting bracket.

[0027] The second pressure rod has one end connected to the other end of the second support rod, and the other end extends away from the second support rod. The second pressure rod is located directly below the second limit switch.

[0028] According to some embodiments of this application, a second reset member is further provided between the second support rod and the bottom of the work rail, and the second reset member is located on the side close to the second mounting bracket. The second reset member is used to reset the second pressure rod to a position where the second limit switch is not triggered after the bottom of the second pressure rod stops being subjected to the pressure of the obstacle.

[0029] According to some embodiments of this application, the second reset member employs an elastic device.

[0030] According to some embodiments of this application, the infrared sensor device employs a safety light curtain sensor.

[0031] The aerial work platform according to the second aspect of this application includes:

[0032] Aerial work boom tractor body;

[0033] The work platform structure as described in the first aspect embodiment above is connected to the aerial work boom body.

[0034] Since the aerial work platform boom truck adopts all the technical solutions of the working platform structure of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0035] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0037] Figure 1 This is a schematic diagram of the workbench structure according to one embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the light curtain coverage area of ​​a safety light curtain sensor according to an embodiment of this application.

[0039] Icon labels:

[0040] Work column 100;

[0041] First mounting bracket 210, second mounting bracket 220;

[0042] Infrared sensor transmitter 310, infrared sensor receiver 320;

[0043] First limit switch 410, second limit switch 420, first support rod 431, first pressure rod 432, second support rod 441, second pressure rod 442;

[0044] First reset component 510, second reset component 520. Detailed Implementation

[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0046] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0048] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0049] The following will be combined with the appendix Figure 1 and attached Figure 2 The technical solutions of this application are clearly and completely described. Obviously, the embodiments described below are some embodiments of this application, not all embodiments.

[0050] refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the workbench structure according to one embodiment of this application; Figure 2 This is a schematic diagram of the light curtain coverage area of ​​a safety light curtain sensor according to an embodiment of this application.

[0051] The workbench structure according to the first aspect of this application includes a workbench 100, a first mounting bracket 210, a second mounting bracket 220, an infrared sensor device, and a control device.

[0052] Work column 100;

[0053] The first mounting bracket 210 is vertically mounted at the bottom of the work railing 100 and located on the first side of the work railing 100;

[0054] The second mounting bracket 220 is vertically mounted at the bottom of the work railing 100 and located on the second side of the work railing 100; the second side is opposite to the first side.

[0055] The infrared sensor device includes an infrared sensor transmitter 310 and an infrared sensor receiver 320. The infrared sensor transmitter 310 is mounted on a first mounting bracket 210, and the infrared sensor receiver 320 is mounted on a second mounting bracket 220. The infrared beam formed between the infrared sensor receiver 320 and the infrared sensor transmitter 310 is parallel to the bottom of the work rail 100.

[0056] A control device is installed on the work platform 100 and electrically connected to the infrared sensor device. The control device is used to control the work platform 100 to stop descending when the infrared beam is blocked.

[0057] Understandably, the first mounting bracket 210 and the second mounting bracket 220 maintain a certain distance between the infrared sensor device and the bottom surface of the work railing 100, ensuring that when the infrared sensor device detects an obstacle during the descent of the work railing 100, the control device stops the descent of the work railing 100, thus preventing the obstacle from touching the bottom surface of the work railing 100.

[0058] It should be noted that the control device only restricts the downward movement of the work platform 100; its upward movement is unaffected. Furthermore, the specific structures of the first mounting bracket 210 and the second mounting bracket 220 are not specifically defined here.

[0059] In some embodiments, the distance between the infrared sensor transmitter 310 and the infrared sensor receiver 320 is greater than the width of the bottom surface of the work rail 100, which allows the infrared beam formed between the infrared sensor transmitter 310 and the infrared sensor receiver 320 to cover the entire bottom of the work rail 100, ensuring that the detection range is the entire bottom of the work rail 100.

[0060] The work railing structure of this application embodiment is simple to install, economical, and cost-effective. It can form a safety protection area at the bottom of the work railing 100, which can effectively avoid unnecessary troubles and safety hazards caused by elastic or inelastic deformation of the work railing 100 or the components installed on the work railing 100 due to the bottom of the work railing 100 touching the ground. The problem of sensor signal drift or damage will be greatly reduced, which can reduce the workload of on-site service personnel, save labor costs, and improve customer satisfaction.

[0061] According to the work rail structure of the present application embodiment, an infrared beam can be formed at the bottom of the work rail 100 by an infrared sensor device. When the infrared beam is detected to be blocked, it indicates that there is an obstacle at the bottom of the work rail 100. At this time, the work rail 100 is controlled to stop descending, which can prevent the obstacle from touching the bottom of the work rail 100, thereby reducing the failure rate of the equipment.

[0062] In some embodiments of this application, reference is made to Figure 1 and Figure 2It also includes a first limit switch 410, a second limit switch 420, a first pressure rod structure, and a second pressure rod structure.

[0063] The first limit switch 410 is located on the first mounting bracket 210 at one end away from the bottom of the work rail 100. The distance between the first limit switch 410 and the bottom of the work rail 100 is greater than the distance between the infrared sensor transmitter 310 and the bottom of the work rail 100. The first limit switch 410 is electrically connected to the control device.

[0064] The second limit switch 420 is located on the second mounting bracket 220 at one end away from the bottom of the work rail 100. The distance between the second limit switch 420 and the bottom of the work rail 100 is greater than the distance between the infrared sensor receiver 320 and the bottom of the work rail 100. The second limit switch 420 is electrically connected to the control device.

[0065] The first pressure rod structure has one end movably connected to the bottom of the working column 100, and the other end is located directly below the first limit switch 410. The other end of the first pressure rod structure can move towards or away from the first limit switch 410 to trigger or stop triggering the first limit switch 410.

[0066] The second pressure bar structure has one end movably connected to the bottom of the work rail 100, and the other end located directly below the second limit switch 420. The other end of the second pressure bar structure can move towards or away from the second limit switch 420 to trigger or stop triggering the second limit switch 420. The control device is also used to control the work rail 100 to stop descending and moving left and right when the first limit switch 410 or the second limit switch 420 is triggered.

[0067] Understandably, if the first / second side of the bottom of the work rail 100 is squeezed by an obstacle, the infrared sensor transmitter 310 / infrared sensor receiver 320 may be damaged or malfunction. The first pressure bar structure is located directly below the first limit switch 410, and the second pressure bar structure is located directly below the second limit switch 420. If the first / second side is squeezed, the first / second pressure bar structure will be squeezed first, and then the first / second pressure bar structure will move closer to the first / second limit switch 410 / second limit switch 420 to trigger the first / second limit switch 410 / second limit switch 420. At this time, the control device controls the work rail 100 to stop descending and moving left and right, while the upward movement of the work rail 100 is unrestricted. This can prevent the external sensor transmitter / infrared sensor receiver 320 from being damaged or malfunctioning due to the first / second side of the bottom of the work rail 100 being squeezed by an obstacle, thus failing to provide effective protection.

[0068] In some embodiments, the control device simultaneously detects the detection signals of the infrared sensor device, the first limit switch 410, and the second limit switch 420. When the infrared sensor device detects an obstacle, or when the first limit switch 410 or the second limit switch 420 is triggered, the control device controls the work bar 100 to stop descending or moving left or right, and issues an alarm. At this time, the work bar 100 can move upward without restriction.

[0069] In some embodiments of this application, reference is made to Figure 2 The first pressure bar structure includes a first support bar 431, a first damping structure, and a first pressure bar 432.

[0070] The first support rod 431 has one end movably connected to the bottom of the work railing 100 and located between the first mounting bracket 210 and the second mounting bracket 220, and the other end can move towards or away from the first mounting bracket 210.

[0071] A first damping structure is provided between the first support rod 431 and the bottom of the work rail 100. The first damping structure is used to limit the rotation angle of the first support rod 431 relative to the bottom of the work rail 100, so that the distance between the other end of the first support rod 431 and the first mounting bracket 210 is less than the distance between one end of the first support rod 431 and the first mounting bracket 210.

[0072] The first pressure rod 432 has one end connected to the other end of the first support rod 431, and the other end extends away from the first support rod 431. The first pressure rod 432 is located directly below the first limit switch 410.

[0073] by Figure 1 Taking [the example] as an example, the first damping structure can restrict the first support rod 431 to swing only to the left, and the swing range is [the range is not specified]. Figure 1 The position shown is from the position where the first pressure rod 432 presses against the position corresponding to the first limit switch 410. The specific structure and material of the first damping structure are not specifically limited here.

[0074] The structure consisting of the first support rod 431, the first damping structure, and the first pressure rod 432 is simple, easy to assemble, and low in cost.

[0075] It should be noted that the first pressure bar structure can also be a hydraulic or pneumatic pressure bar structure, as long as it can move towards or away from the first mounting bracket 210 to trigger or stop triggering the first limit switch 410. This should not be regarded as a limitation of this application.

[0076] In some embodiments of this application, reference is made to Figure 2A first reset member 510 is also provided between the first support rod 431 and the bottom of the work rail 100, and the first reset member 510 is located on the side close to the first mounting bracket 210. The first reset member 510 is used to reset the first pressure rod 432 to the position where the first limit switch 410 is not triggered after the bottom of the first pressure rod 432 stops being pressured by the obstacle. It can be understood that the bottom of the first pressure rod 432 stops being pressured by the obstacle, which means that the bottom of the first pressure rod 432 is a certain distance away from the obstacle and will not affect the infrared sensor transmitter 310. At this time, the first reset member 510 resets the first pressure rod 432 to the position where the first limit switch 410 is not triggered after the bottom of the first pressure rod 432 stops being pressured by the obstacle, so that the work rail 100 can continue to descend without restriction and work normally.

[0077] In some embodiments of this application, reference is made to Figure 2 The first reset member 510 employs an elastic device. Employing an elastic device in the first reset member 510 has the following advantages:

[0078] 1. Automatic reset capability: The elastic device can automatically return to its initial position after being deformed by external force, ensuring the timeliness and accuracy of the reset action.

[0079] 2. Buffering and shock absorption: During the reset process, the elastic device can buffer and absorb shock, reduce the impact and wear between components, extend service life, and reduce noise.

[0080] 3. High adaptability: The elastic device can adapt to different working environments and operating conditions. By selecting elastic elements of different materials, shapes, and specifications, various reset force and reset stroke requirements can be met.

[0081] 4. Easy installation and maintenance: The flexible device has a relatively simple structure, is easy to install, and generally does not require complex maintenance, which reduces the overall cost of the equipment and the workload of maintenance.

[0082] It should be noted that the first reset component 510 may also adopt a gravity reset structure, a spring-assisted lever reset structure, a hydraulic or pneumatic reset structure, etc., which should not be regarded as a limitation of this application.

[0083] In some embodiments of this application, reference is made to Figure 2 The second pressure bar structure includes a second support bar 441, a second damping structure, and a second pressure bar 442.

[0084] The second support rod 441 has one end movably connected to the bottom of the work rail 100 and located between the first mounting bracket 210 and the second mounting bracket 220, and the other end can move towards or away from the second mounting bracket 220; the distance between one end of the second support rod 441 and the second mounting bracket 220 is less than the distance between one end of the first support rod 431 and the second mounting bracket 220.

[0085] The second damping structure is located between the second support rod 441 and the bottom of the work rail 100. The second damping structure is used to limit the rotation angle of the second support rod 441 relative to the bottom of the work rail 100, so that the distance between the other end of the second support rod 441 and the second mounting bracket 220 is less than the distance between one end of the second support rod 441 and the second mounting bracket 220.

[0086] The second pressure rod 442 has one end connected to the other end of the second support rod 441, and the other end extends away from the second support rod 441. The second pressure rod 442 is located directly below the second limit switch 420.

[0087] by Figure 1 Taking [the example] as an example, the second damping structure can restrict the second support rod 441 to swing only to the right, and the swing range is [the range is not specified]. Figure 1 The position shown indicates that the second pressure rod 442 presses against the corresponding position of the second limit switch 420. The specific structure and material of the second damping structure are not specifically limited here.

[0088] The structure consisting of the second support rod 441, the second damping structure, and the second pressure rod 442 is simple, easy to assemble, and low in cost.

[0089] It should be noted that the second pressure bar structure can also be a hydraulic or pneumatic pressure bar structure, as long as it can move towards or away from the second mounting bracket 220 to trigger or stop triggering the second limit switch 420, and this should not be regarded as a limitation of this application.

[0090] In some embodiments of this application, reference is made to Figure 2 A second reset member 520 is also provided between the second support rod 441 and the bottom of the work rail 100, and the second reset member 520 is located on the side close to the second mounting bracket 220. The second reset member 520 is used to reset the second pressure rod 442 to the position where the second limit switch 420 is not triggered after the bottom of the second pressure rod 442 stops being pressured by the obstacle. It can be understood that the bottom of the second pressure rod 442 stops being pressured by the obstacle, which means that the bottom of the second pressure rod 442 is a certain distance away from the obstacle and will not affect the infrared sensor receiver 320. At this time, the second reset member 520 resets the second pressure rod 442 to the position where the second limit switch 420 is not triggered after the bottom of the second pressure rod 442 stops being pressured by the obstacle, so that the work rail 100 can continue to descend without restriction and work normally.

[0091] In some embodiments of this application, reference is made to Figure 2 The second reset member 520 employs an elastic device. Employing an elastic device in the second reset member 520 has the following advantages:

[0092] 1. Automatic reset capability: The elastic device can automatically return to its initial position after being deformed by external force, ensuring the timeliness and accuracy of the reset action.

[0093] 2. Buffering and shock absorption: During the reset process, the elastic device can buffer and absorb shock, reduce the impact and wear between components, extend service life, and reduce noise.

[0094] 3. High adaptability: The elastic device can adapt to different working environments and operating conditions. By selecting elastic elements of different materials, shapes, and specifications, various reset force and reset stroke requirements can be met.

[0095] 4. Easy installation and maintenance: The flexible device has a relatively simple structure, is easy to install, and generally does not require complex maintenance, which reduces the overall cost of the equipment and the workload of maintenance.

[0096] It should be noted that the second reset component 520 may also employ a gravity reset structure, a spring-assisted lever reset structure, a hydraulic or pneumatic reset structure, etc., and this should not be regarded as a limitation of this application.

[0097] In some embodiments of this application, reference is made to Figure 1 The infrared sensor device employs a safety light curtain sensor. A safety light curtain sensor is a photoelectric sensor used to detect whether an object has entered a specific area to ensure the safety of personnel and equipment. Its principle and characteristics are as follows:

[0098] principle:

[0099] A safety light curtain consists of a transmitter and a receiver. The transmitter has multiple infrared emitters arranged in a specific pattern, emitting multiple beams of infrared light to form the light curtain. The receiver has multiple infrared receivers corresponding to the transmitters, used to receive the light emitted by the transmitters. Under normal circumstances, the receiver can receive all the light emitted by the transmitters. When an object enters the light curtain area, it will block some of the light. The corresponding receiver on the receiver will not receive the light signal. Through internal circuitry and algorithms, the receiver determines that an object is blocking the light and then outputs a signal to trigger the corresponding safety protection mechanism.

[0100] Features:

[0101] 1. High-precision detection: It can accurately detect the presence of objects, including small objects, and can reliably detect small parts such as human fingers.

[0102] 2. Non-contact detection: Detection is performed using infrared light, eliminating the need for direct contact with objects, thus avoiding mechanical wear and extending service life.

[0103] 3. Fast response speed: The time from detecting an object blocking the light to outputting a signal is extremely short, generally between a few milliseconds and tens of milliseconds, which can trigger safety protection measures in a timely manner.

[0104] 4. High reliability: Employing multiple transmitting and receiving units, the overall detection function can still be guaranteed even if some units fail. It also has strong anti-interference capabilities and can operate stably in complex industrial environments.

[0105] 5. Easy installation: The structure is relatively simple and the installation method is flexible. It can be installed according to different application scenarios and equipment structures, and it is easy to maintain and debug.

[0106] 6. Highly configurable: The detection accuracy, protection height, working mode and other parameters of the light curtain can be configured and adjusted according to actual needs to adapt to a variety of different application scenarios and safety requirements.

[0107] The safety light curtain sensor is used to detect obstacles at the bottom of the work railing 100. It has a large detection range, can achieve all-round protection without blind spots, has high detection accuracy, fast detection speed, and strong reliability, and can effectively prevent the bottom of the work railing 100 from touching the ground.

[0108] It should be noted that other types of infrared sensors or ultrasonic sensors may also be used, and this should not be regarded as a limitation of this application.

[0109] According to a second aspect embodiment of this application, an aerial work platform includes an aerial work platform body and a work platform structure as described in the first aspect embodiment above, wherein the work platform structure is connected to the aerial work platform body.

[0110] Since the aerial work platform boom truck adopts all the technical solutions of the working platform structure in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments, which will not be repeated here.

[0111] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A workbench structure, characterized in that, include: Work Column; The first mounting bracket is vertically installed at the bottom of the work rail and located on the first side of the work rail; The second mounting bracket is vertically mounted at the bottom of the work rail and located on the second side of the work rail; the second side is opposite to the first side. An infrared sensor device includes an infrared sensor transmitter and an infrared sensor receiver. The infrared sensor transmitter is mounted on a first mounting bracket, and the infrared sensor receiver is mounted on a second mounting bracket. The infrared beam formed between the infrared sensor receiver and the infrared sensor transmitter is parallel to the bottom of the work rail. A control device is disposed on the work rail and electrically connected to the infrared sensor device. The control device is used to control the work rail to stop descending when the infrared beam is blocked.

2. The workbench structure according to claim 1, characterized in that, Also includes: A first limit switch is disposed on the first mounting bracket at one end away from the bottom of the work rail. The distance between the first limit switch and the bottom of the work rail is greater than the distance between the infrared sensor transmitter and the bottom of the work rail. The first limit switch is electrically connected to the control device. The second limit switch is located on the second mounting bracket at one end away from the bottom of the work rail. The distance between the second limit switch and the bottom of the work rail is greater than the distance between the infrared sensor receiver and the bottom of the work rail. The second limit switch is electrically connected to the control device. The first pressure rod structure has one end movably connected to the bottom of the work rail, and the other end is located directly below the first limit switch. The other end of the first pressure rod structure can move towards or away from the first limit switch to trigger or stop triggering the first limit switch. The second pressure rod structure has one end movably connected to the bottom of the work rail, and the other end located directly below the second limit switch. The other end of the second pressure rod structure can move towards or away from the second limit switch to trigger or stop triggering the second limit switch. The control device is also used to control the work rail to stop descending and moving left and right when the first limit switch or the second limit switch is triggered.

3. The workbench structure according to claim 2, characterized in that, The first pressure bar structure includes: The first support rod has one end movably connected to the bottom of the work rail and located between the first mounting bracket and the second mounting bracket, and the other end can move towards or away from the first mounting bracket. A first damping structure is disposed between the first support rod and the bottom of the work rail. The first damping structure is used to limit the rotation angle of the first support rod relative to the bottom of the work rail, so that the distance between the other end of the first support rod and the first mounting bracket is less than the distance between one end of the first support rod and the first mounting bracket. The first pressure rod has one end connected to the other end of the first support rod, and the other end extends away from the first support rod. The first pressure rod is located directly below the first limit switch.

4. The workbench structure according to claim 3, characterized in that, A first reset member is also provided between the first support rod and the bottom of the work rail, and the first reset member is located on the side close to the first mounting bracket. The first reset member is used to reset the first pressure rod to the position where the first limit switch is not triggered after the pressure of the obstacle stops at the bottom of the first pressure rod.

5. The workbench structure according to claim 4, characterized in that, The first reset element is an elastic device.

6. The workbench structure according to claim 3, characterized in that, The second pressure bar structure includes: The second support rod has one end movably connected to the bottom of the work rail and located between the first mounting bracket and the second mounting bracket, and the other end can move towards or away from the second mounting bracket; the distance between one end of the second support rod and the second mounting bracket is less than the distance between one end of the first support rod and the second mounting bracket. A second damping structure is disposed between the second support rod and the bottom of the work rail. The second damping structure is used to limit the rotation angle of the second support rod relative to the bottom of the work rail, so that the distance between the other end of the second support rod and the second mounting bracket is less than the distance between one end of the second support rod and the second mounting bracket. The second pressure rod has one end connected to the other end of the second support rod, and the other end extends away from the second support rod. The second pressure rod is located directly below the second limit switch.

7. The workbench structure according to claim 6, characterized in that, A second reset member is also provided between the second support rod and the bottom of the work rail, and the second reset member is located on the side close to the second mounting bracket. The second reset member is used to reset the second pressure rod to the position where the second limit switch is not triggered after the pressure of the obstacle stops at the bottom of the second pressure rod.

8. The workbench structure according to claim 7, characterized in that, The second reset element is an elastic device.

9. The workbench structure according to claim 1, characterized in that, The infrared sensor device is a safety light curtain sensor.

10. A boom lift for aerial work, characterized in that, include: The main body of the aerial work platform boom; The work platform structure as described in any one of claims 1 to 9 is connected to the aerial work platform body.

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