Freight lift with effective protection function

Abstract

A freight elevator with an effective protection function comprises an elevator control cabinet, a hoistway and a freight elevator car arranged in the hoistway, a plurality of target landing positions are arranged outside the hoistway, and each target landing position is provided with an elevator landing door and a landing position calling device. The landing calling device comprises a landing calling panel, a calling landing mounting box arranged on the back face of the landing calling panel and a calling landing control module arranged in the calling landing mounting box. The elevator calling control module is connected with an elevator waiting monitoring module used for monitoring whether people or / and objects are waiting in the target landing and a state prompting device used for prompting the state of the goods elevator car at the target landing. Under the action of the elevator waiting monitoring module, the goods elevator has a sentinel type working mode of automatically calling the elevator to open the door when people and articles stay in a monitoring area of the elevator waiting monitoring module, so that a user does not need to use a landing calling device to open the elevator door and move the position to observe whether an elevator landing door and a car door device are opened or not; and the use convenience of the user is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and particularly to a freight elevator with effective protection. Background Art

[0002] In the prior art, in order to facilitate workers to use a freight elevator, an automatic call and door-opening device is usually provided. For example, a cargo elevator automatic door-opening and holding control system disclosed in Patent No. 202020114917.5 includes a control main board of the cargo elevator, and further includes an infrared radar detection device installed at the door head position of each floor of the cargo elevator. The infrared radar detection device is connected to the control main board of the cargo elevator through a radar signal receiving board. The infrared radar detection device emits a light curtain to the ground. When an object is detected at the elevator entrance, a set of signals is output to the radar signal receiving board. After receiving the signal, the radar signal receiving board communicates with the control main board, and the control main board controls the elevator to open the door and keep the door open. When using the cargo elevator, after moving the goods to the elevator entrance, if the elevator is on this floor, it will automatically open the door and keep the door open until all the goods are moved into the car, without the need to press the external call button to open the elevator door and worry about the elevator suddenly closing and moving away during the movement of the goods, which greatly improves the user's convenience and ensures the safety and reliability of the elevator at the same time.

[0003] However, this technical solution does not provide a device for prompting the opening and closing state of the elevator door, resulting in that the delivery workers can only observe the opening and closing state of the elevator door by themselves. When the goods do not block the line of sight of the delivery workers, the delivery workers can normally observe the opening and closing state of the elevator door. However, when the goods are large and block the line of sight of the delivery workers, the delivery workers need to move their positions to adjust their line of sight to observe, which is inconvenient. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a freight elevator with effective protection.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] A freight elevator with effective protection includes an elevator control cabinet, a hoistway, and a cargo elevator car arranged in the hoistway. Multiple destination floor stations are arranged outside the hoistway. Each destination floor station has an elevator landing door and a landing call device. The elevator landing door and the car door device of the cargo elevator car are both connected to the elevator control cabinet. The landing call device includes a landing call panel, a call installation box arranged on the back of the landing call panel, and a call control module arranged in the call installation box. The call control module is communicatively connected to the elevator control cabinet. The elevator control cabinet is electrically connected to a leveling monitoring switch, a car door monitoring switch, and a landing door monitoring switch.

[0007] It is characterized in that: the call control module is connected with a waiting elevator monitoring module for monitoring whether there are people or / and items waiting for the elevator in the destination floor station and a status prompting device for prompting the status of the goods elevator car when it is at the destination floor station. The status prompting device includes a status prompting lamp module for prompting by using light signals and a voice prompting module for prompting by using sounds. The status prompting lamp module and the voice prompting module are both integrally installed on the floor call panel.

[0008] In the invention, a call display screen and a call button module electrically connected with the call control module are provided on the floor call panel.

[0009] In the invention, a display window and call button holes are provided on the front surface of the floor call panel. The display area of the call display screen corresponds to the display window. The call button module includes an up call button or / and a down call button. The call button holes include an up call hole corresponding to the up call button or / and a down call hole corresponding to the down call button.

[0010] In the invention, the status prompting lamp module includes a first prompting lamp and a second prompting lamp. The first prompting lamp and the second prompting lamp are both integrally installed on the back surface of the floor call panel. A first light window corresponding to the first prompting lamp and a second light window corresponding to the second prompting lamp are provided on the front surface of the floor call panel.

[0011] In the invention, a sound output structure corresponding to the sound generating end of the voice prompting module is provided on the front surface of the floor call panel. The first light window and the second light window are respectively located on both sides of the sound output structure.

[0012] In the invention, the goods elevator car includes a goods elevator frame, a chassis, a car wall assembly, a car door device and a car top. The goods elevator frame includes a plurality of car frames arranged from front to back. The top of the lower beam of the car frame is commonly connected to the bottom of the chassis. The car wall assembly is arranged around the edge of the top of the chassis. The car top is installed on the top of the car wall assembly. A loading space is formed by enclosing the chassis, the car wall assembly and the car top. At least one car door opening is provided on the car wall assembly. Each car door opening is correspondingly provided with a car door device.

[0013] In the invention, a hidden ventilation groove is provided on the outer side of the car wall assembly. Hidden ventilation holes hidden inside it are provided in the hidden ventilation groove. Both ends of the hidden ventilation holes are respectively communicated with the loading space and the hidden ventilation groove.

[0014] In the invention, the car wall assembly includes a front wall unit, a rear wall unit, a left wall unit, and a right wall unit that are distributed in a quadrilateral shape. The bottoms of the front wall unit, the rear wall unit, the left wall unit, and the right wall unit are all connected to the top of the chassis, and the tops are all connected to the car top. The front wall unit is provided with the car door opening; the upper and lower ends of the outer sides of the rear wall unit, the left wall unit, and the right wall unit are all provided with the hidden ventilation grooves.

[0015] In the invention, an anti-collision monitoring light curtain is provided on the car door device. The anti-collision monitoring light curtain is connected and controlled by a car control module, and the car control module is communicatively connected to the elevator control cabinet.

[0016] In the invention, the car door device includes two car door panels. The anti-collision monitoring light curtain includes a light curtain receiving end and a light curtain transmitting end. The light curtain receiving end and the light curtain transmitting end are respectively installed on the two car door panels. The light incident port of the light curtain receiving end and the light emitting port of the light curtain transmitting end both face the middle position in front of the elevator landing door opening and form a light curtain detection area.

[0017] The beneficial effects of the present invention: The present invention is provided with a waiting elevator monitoring module, a status indicator light module for emitting light prompts, and a voice prompt module, so that the freight elevator has a sentry-like working mode of automatically calling the elevator to open the door when people and objects stay in the monitoring area of the waiting elevator monitoring module. This allows users no longer need to use the landing call device to open the elevator door and move to observe whether the elevator landing door and the car door device are opened, greatly improving the user's convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments:

[0019] Figure 1 Schematic diagram of the destination landing;

[0020] Figure 2 Schematic diagram of the landing call device;

[0021] Figure 3 Installation schematic diagram of the freight elevator car;

[0022] Figure 4 Left view of the freight elevator car;

[0023] Figure 5 Stereogram of the freight elevator car;

[0024] Figure 6 Stereogram of the general wall module;

[0025] Figure 7 Cross-sectional view of the lower end of the general wall module;

[0026] Figure 8Schematic diagram for the installation of the anti-collision monitoring light curtain;

[0027] Figure 9 Combined schematic diagram of the lock ladder linkage mechanism, the lock ladder transmission shaft and the lock ladder control mechanism;

[0028] Figure 10 For Figure 9 Enlarged view of part A in

[0029] Figure 11 Schematic diagram of the lock ladder linkage mechanism;

[0030] Figure 12 Schematic diagram of the lock ladder control mechanism;

[0031] Figure 13 Connection block diagram of the electrical part of the freight elevator. Specific implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then such directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present invention, then such descriptions of "first" or "second" etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0035] Refer to Figure 1-13, a freight elevator with effective protection, including an elevator control cabinet 100, a hoistway 200, a traction system 110, a freight elevator car 300 and a counterweight device 120 arranged in the hoistway 200. The traction system 110 is controlled by the elevator control connection. There are counterweight guide rails and car guide rails in the hoistway 200. The freight elevator car 300 is guided and fitted on the car guide rails through car guide shoes. The counterweight device 120 is guided and fitted on the counterweight guide rails through counterweight guide shoes. The freight elevator car 300 and the counterweight device 120 are connected and driven by the traction system 110 to realize lifting movement. The elevator control cabinet 100 controls the lifting movement of the freight elevator car 300 and the counterweight device 120 through the traction system 110. The hoistway 200 has multiple destination landing stations 210. Each destination landing station 210 has an elevator landing door 220 and a landing call device 230. The traction system 110, the elevator landing door 220 and the car door device 330 of the freight elevator car 300 are all connected to the elevator control cabinet 100. The elevator control cabinet 100 is electrically connected with a leveling monitoring switch 101 for monitoring whether the freight elevator car 300 is leveled, a car door monitoring switch 102 for monitoring the opening and closing state of the car door device 330 and a landing door monitoring switch 103 for monitoring the opening and closing state of the elevator landing door 220. The leveling monitoring switch 101, the car door monitoring switch 102 and the landing door monitoring switch 103 are all prior arts, so no specific description is made. The landing call device 230 includes a landing call panel 231, a call installation box 232 arranged on the back of the landing call panel 231 and a call control module 233 arranged in the call installation box 232. The call control module 233 is communicatively connected with the elevator control cabinet 100. A call display screen 234 and a call button module 235 electrically connected with the call control module 233 are arranged on the landing call panel 231.

[0036] Furthermore, the call control module 233 is connected with a waiting elevator monitoring module 400 for monitoring whether there are people or / and items waiting for the elevator in the destination landing station 210 and a status prompting device for prompting the status of the freight elevator car 300 when it is at the destination landing station 210. Among them, the waiting elevator monitoring module 400 is installed on the door frame of the elevator landing door 220. Items include forklifts and goods. The waiting elevator monitoring module 400 adopts an infrared radar device or a millimeter wave radar. Preferably, the waiting elevator monitoring module 400 adopts an infrared radar device. The realization of the detection of people and items by using the infrared radar device and the millimeter wave radar is a prior art, so no specific description is made. The status prompting device includes a status prompting light module 236 for prompting by using light signals and a voice prompting module 237 for prompting by using sounds. The status prompting light module 236 and the voice prompting module 237 are both integrally installed on the landing call panel 231.

[0037] In this embodiment, a display window 2310 and call button holes are provided on the front surface of the landing call panel 231, and the display area of the call display screen 234 corresponds to the display window 2310; the call button module 235 includes an up call button 2351 or / and a down call button 2352, and the call button holes include an up call hole corresponding to the up call button 2351 or / and a down call hole corresponding to the down call button 2352.

[0038] In this embodiment, the status indicator light module 236 includes a first indicator light 2361 and a second indicator light 2362. Both the first indicator light 2361 and the second indicator light 2362 are integrally installed on the back surface of the landing call panel 231, and a first light window corresponding to the first indicator light 2361 and a second light window corresponding to the second indicator light 2362 are provided on the front surface of the landing call panel 231. Through the dual-light design of the first indicator light 2361 and the second indicator light 2362, the effect of the light prompt is made more obvious.

[0039] When the freight elevator is running, the car door monitoring switch 102 and the landing door monitoring switch 103 are used to monitor the states of the elevator landing door 220 and the car door device 330 in real time respectively. Among them, when the freight elevator car 300 opens the door in the leveling state, if both the elevator landing door 220 and the car door device 330 can be normally opened, the first indicator light 2361 and the second indicator light 2362 display normal door-opening lights and the voice prompt module broadcasts normal door-opening voices, so as to prompt the user that they can enter; otherwise, the first indicator light 2361 and the second indicator light 2362 display abnormal door-opening lights and the voice prompt module broadcasts abnormal door-opening voices, prompting the user to pay attention to the abnormality of the freight elevator to avoid safety accidents. When the freight elevator car 300 closes the door in the leveling state, if both the elevator landing door 220 and the car door device 330 can be normally closed, the first indicator light 2361 and the second indicator light 2362 display normal door-closing lights and the voice prompt module broadcasts normal door-closing voices to prompt the user that they can perform the floor selection operation; otherwise, the first indicator light 2361 and the second indicator light 2362 display abnormal door-closing lights and the voice prompt module broadcasts abnormal door-closing voices, prompting the user to pay attention to the abnormality of the freight elevator to avoid safety accidents. If the elevator landing door 220 and the car door device 330 are abnormally opened when the freight elevator car 300 is not level, the first indicator light 2361 and the second indicator light 2362 display car door device 330 failure lights and the voice prompt module broadcasts car door device 330 failures to remind the external personnel to pay attention to the failure situation of the freight elevator and take safety warning measures in time.

[0040] In this embodiment, the voice prompt module 237 is located on the back surface of the landing call panel 231. An out-sound structure 2311 corresponding to the sound-emitting end of the voice prompt module 237 is provided on the front surface of the landing call panel 231. The first light window and the second light window are respectively located on both sides of the out-sound structure 2311. Specifically, the out-sound structure 2311 includes a plurality of out-sound holes arranged in an array, and the sound emitted by the voice prompt module 237 is dispersed into the destination floor 210 through the out-sound holes.

[0041] In this embodiment, the freight elevator car 300 includes a freight elevator frame, a chassis 310, a car wall assembly 320, a car door device 330, and a car top 340. The freight elevator frame includes a plurality of car frames 350 arranged from front to back. The car frame 350 includes two car frame columns 351, a car frame upper beam 352 connected to the upper ends of the two car frame columns 351 at the left and right ends respectively, and a car frame lower beam 353 connected to the lower ends of the two car frame columns 351 at the left and right ends respectively. The top of the car frame lower beam 353 of the car frame 350 is commonly connected to the bottom of the chassis 310. The car wall assembly 320 is arranged around the edge of the top of the chassis 310. The car top 340 is installed on the top of the car wall assembly 320. A loading space is formed by enclosing the chassis 310, the car wall assembly 320, and the car top 340. At least one car door opening is provided on the car wall assembly 320, and a car door device 330 is correspondingly arranged for each car door opening.

[0042] Furthermore, a floor selection button panel 380 communicatively connected to the elevator control cabinet 100 is provided on the car wall assembly 320. The floor selection button panel 380 is located in the loading space. A voice-activated floor selection module 381 is provided on the floor selection button panel 380. The voice-activated floor selection module 381 is electrically connected to the floor selection button panel 380, and the voice-activated floor selection module 381 communicates with the elevator control cabinet 100 by using the floor selection button panel 380.

[0043] When waiting for the elevator, the staff only need to move the goods into the monitoring area of the waiting elevator monitoring module 400. After the waiting elevator monitoring module 400 detects the goods, it will feedback the waiting elevator monitoring data to the elevator control cabinet 100 in real time. When the elevator control cabinet 100 receives the waiting elevator monitoring data, it starts timing through its built-in timing module. When the time for receiving the waiting elevator monitoring data exceeds the preset receiving time threshold, the elevator control cabinet 100 determines that there are goods waiting for the elevator. Then, the elevator control cabinet 100 controls the cargo elevator car 300 to reach the destination floor 210 where the waiting elevator monitoring module 400 that detected the waiting elevator monitoring data is located, and opens the elevator landing door 220 and the car door device 330 to keep them in the open state. At this time, the status indicator light module 236 emits a light prompt and the voice prompt module 237 emits a sound for prompting, so that the staff can move all the goods into the car. In this way, under the action of the waiting elevator monitoring module 400, the cargo elevator has a sentry working mode of automatically calling the elevator to open the door when people and goods stay in the monitoring area of the waiting elevator monitoring module 400, enabling users no longer to use the landing call device 230 to open the elevator door and move to observe whether the elevator landing door 220 and the car door device 330 are opened, greatly improving the user's convenience of use. At the same time, after entering the cargo elevator car 300, the user can send a floor selection command to the voice-activated floor selection module 381 in a voice-activated manner. The voice-activated floor selection module 381 accordingly sends a floor selection signal to the elevator control cabinet 100, enabling the elevator control cabinet 100 to control the traction system 110 to bring the cargo elevator car 300 to the destination floor 210, thus eliminating the need for the user to press the floor selection button panel 380, greatly improving the user's convenience of use.

[0044] In this embodiment, a hidden ventilation groove 32E is provided on the outer side of the car wall assembly 320, and a hidden ventilation hole 32F hidden inside it is provided in the hidden ventilation groove 32E. The two ends of the hidden ventilation hole 32F are respectively communicated with the bearing space and the hidden ventilation groove 32E.

[0045] In this embodiment, the car wall assembly 320 includes a front wall unit 32A, a rear wall unit 32B, a left wall unit 32C, and a right wall unit 32D distributed in a quadrilateral shape. The bottoms of the front wall unit 32A, the rear wall unit 32B, the left wall unit 32C, and the right wall unit 32D are all connected to the top of the chassis 310, and the tops are all connected to the car top 340. The front wall unit 32A is provided with the car door opening; the upper and lower ends of the outer sides of the rear wall unit 32B, the left wall unit 32C, and the right wall unit 32D are all provided with the hidden ventilation groove 32E.

[0046] The rear wall unit 32B, the left wall unit 32C, and the right wall unit 32D each include a plurality of general wall modules connected together in sequence side by side. The general wall module includes a wall panel 321 and two end caps 322. The upper and lower ends of the wall panel 321 are both provided with the hidden ventilation holes 32F.

[0047] Further, both the left and right ends of the wall panel 321 are bent outward to form wall panel connection flanges 3211. A U-shaped groove is formed between the outer side of the wall panel 321 and the two wall panel connection flanges 3211. The outer side of the U-shaped groove is an outer opening, and both the upper and lower ends are vertical openings. The two end caps 322 are located in the U-shaped groove and respectively seal the two vertical openings. The end cap 322 includes a transverse plate 3221, a vertical plate 3222, an extension plate 3223, and a vertical baffle 3224 that are integrally formed and connected in sequence. Among them, the transverse plate 3221 seals the vertical opening, and a connection through hole is provided on the transverse plate 3221. The connection through hole is used to cooperate with the first bolt to connect the chassis 310 and the car top 340. The vertical plate 3222 is fixed on the wall panel 321. One end of the vertical plate 3222 is vertically connected to the end of the transverse plate 3221, and the other end is vertically connected to the end of the extension plate 3223. A hidden ventilation groove 32E is formed between the vertical baffle 3224 and the rear side of the wall panel 321 to hide the hidden ventilation hole 32F. One end of the vertical baffle 3224 is connected to the end of the extension plate 3223, and a ventilation opening is formed between the other end and the outer side of the wall panel 321 to allow air to enter and exit the hidden ventilation groove 32E.

[0048] In the present invention, by using the vertical baffle 3224 extending on the original end cap 322 to block and hide the hidden ventilation hole 32F, the hidden ventilation hole 32F is hidden in the hidden ventilation groove 32E. This not only ensures the ventilation effect inside the car but also maintains the beauty and integrity of the general wall module. It can also achieve the purpose of shading and dust prevention. This structure does not require additional reinforcing ribs and connectors, effectively simplifies the complex structure in the traditional design, improves the production efficiency and assembly convenience, and achieves the purpose of reducing the assembly cost and the production cost of parts. In addition, the vertical baffle 3224 can serve as a reinforcing rib of the end cap 322, enhancing the strength and safety of the car wall and improving the overall performance of the elevator.

[0049] As a preferred embodiment, at least one reinforcing support 324 located in the U-shaped groove is fixedly connected to the outer side of the wall panel 321. The reinforcing support 324 can improve the structural strength of the wall panel 321 and reduce the probability of deformation of the wall panel 321. Further, the upper and lower ends of the reinforcing support 324 respectively extend into the corresponding hidden ventilation grooves 32E of the two end caps 322, so that the ends of the reinforcing support 324 can be hiddenly installed to improve the beauty of the car wall.

[0050] As a preferred embodiment, a plurality of side connection holes arranged vertically are provided on the wall panel connection flange 3211. The side connection holes are used to cooperate with bolts to connect other car walls of the freight elevator car 300.

[0051] In this embodiment, the car door device 330 is provided with an anti-collision monitoring light curtain 360, and the anti-collision monitoring light curtain 360 is connected and controlled by a car control module 370, and the car control module 370 is communicatively connected with the elevator control cabinet 100. Further, the car door device 330 includes two car door panels 331, and the anti-collision monitoring light curtain 360 includes a light curtain receiving end 361 and a light curtain transmitting end 362, and the light curtain receiving end 361 and the light curtain transmitting end 362 are respectively installed on the two car door panels 331, and the light input port of the light curtain receiving end 361 and the light output port of the light curtain transmitting end 362 are both oriented to the front middle position of the elevator floor door 220 and form a light curtain detection area. When the mobile object unit enters the light curtain detection area, the infrared light emitted by the light curtain transmitting end 362 is reflected by the mobile object unit or the person to the light curtain receiving end 361, and the car control module 370 automatically detects the size and distance of the mobile object unit; as the mobile object unit or the person approaches the car door, the car control module 370 uses the voice prompt module 237 to send an interactive signal to the worker, reminding the worker to adjust the moving angle of the mobile object unit to reduce the probability of the mobile object unit colliding with the elevator floor door 220, thereby realizing the anti-collision monitoring function.

[0052] As a preferred embodiment, each car frame 350 is provided with a set of safety clamp mechanisms, the safety clamp mechanisms include two elevator safety clamps 500 respectively provided on two car frame columns 351 and a safety clamp linkage mechanism 501 provided on the car frame lower beam 353 for linkage of the two elevator safety clamps 500 on the same car frame 350, the safety clamp linkage mechanism 501 is controlled by a speed limiter, and the two adjacent safety clamp linkage mechanisms 501 are connected by a brake synchronization rod 502 for making them work synchronously, and the car frame lower beam 353 is provided with a safety clamp monitoring switch 503 for monitoring whether the elevator safety clamp 500 is in action, and the safety clamp monitoring switch 503 is connected to the elevator control cabinet 100 for communication. The above is the prior art, so it will not be described in detail.

[0053] Furthermore, the elevator locking linkage mechanism 600 and two elevator locking plug shafts 700 connected and driven to synchronously extend and retract by the elevator locking linkage mechanism 600 are provided on the upper beam 352 of the car frame. The two elevator locking plug shafts 700 are respectively guided and matched on the left and right ends of the upper beam 352 of the car frame. The action input ends of the two adjacent elevator locking linkage mechanisms 600 are connected by the elevator locking transmission shaft 610. The elevator locking transmission shaft 610 is driven to rotate by the elevator locking control mechanism 800.

[0054] A plurality of lock ladder matching arrays corresponding to each lock ladder insertion shaft 700 are provided in the hoistway 200. The lock ladder matching arrays include a plurality of lock ladder matching seats 900 arranged vertically. The lock ladder matching seats 900 are installed on the car guide rails. A maintenance lock ladder hole 901 for the lock ladder insertion shaft 700 to be inserted to achieve lock ladder is provided on the lock ladder matching seats 900.

[0055] When locking the freight elevator, the maintenance worker uses the lock ladder control mechanism 800 to drive all the lock ladder drive shafts 610 to rotate in the first rotation direction, driving each lock ladder linkage mechanism 600 to link the lock ladder insertion shaft 700 to extend and insert into the maintenance lock ladder hole 901; when unlocking the freight elevator, the maintenance worker uses the lock ladder control mechanism 800 to drive all the lock ladder drive shafts 610 to rotate in the second rotation direction, driving each lock ladder linkage mechanism 600 to link the lock ladder insertion shaft 700 to retract and withdraw from the maintenance lock ladder hole 901.

[0056] In this embodiment, through the linkage between structures such as the lock ladder control mechanism 800, the lock ladder drive shaft 610, and the lock ladder linkage mechanism 600, all the lock ladder insertion shafts 700 can be driven to insert into the corresponding maintenance lock ladder holes 901, completing the locking action of the freight elevator car 300, effectively simplifying the lock ladder process, reducing the operation burden of the maintenance worker, and ensuring the stability and safety of the freight elevator car 300 during the maintenance process, thereby improving the efficiency and safety of the overall maintenance operation.

[0057] In this embodiment, a lock ladder seat 354 is provided on the upper beam 352 of the car frame. The lock ladder insertion shaft 700 is guidingly connected to the lock ladder seat 354. Further, the lock ladder insertion shaft 700 includes a lock ladder main body portion 701 and a lock ladder acting portion 702 connected axially. The diameter of the lock ladder main body portion 701 is greater than that of the lock ladder acting portion 702. The lock ladder acting portion 702 is used to insert into the maintenance lock ladder hole 901. First lock ladder guide holes for guiding the lock ladder main body portion 701 and second lock ladder guide holes for guiding the lock ladder acting portion 702 are respectively provided at both ends of the lock ladder seat 354.

[0058] In this embodiment, the lock ladder linkage mechanism 600 includes a lock ladder linkage base 601, a lock ladder rotating shaft 602, and two lock ladder rack sliders 603. The lock ladder linkage base 601 is installed on the upper beam 352 of the car frame. A lock ladder linkage cavity is provided on the lock ladder linkage base 601. The lock ladder rotating shaft 602 passes through the lock ladder linkage cavity and is rotatably installed on the upper beam 352 of the car frame and the lock ladder linkage base 601 at both ends respectively. The lock ladder rotating shaft 602 is coaxially connected to the lock ladder drive shaft 610;

[0059] Further, the lock ladder rack slide 603 is guidingly fitted in the lock ladder linkage cavity. One end of the lock ladder rack slide 603 is provided with a lock ladder linkage rod 604 for connecting and driving the movement of the lock ladder insertion shaft 700. The other end is provided with a lock ladder rack portion 6031 located in the lock ladder linkage cavity. A lock ladder linkage gear 605 driven by the lock ladder rotating shaft 602 is arranged between the lock ladder rack portions 6031 of the two lock ladder rack slides 603. The lock ladder linkage gear 605 is sleeved and fixed on the lock ladder rotating shaft 602 and is respectively engaged with the lock ladder rack portions 6031 of the two lock ladder rack slides 603 at both ends. The lock ladder linkage gear 605 is configured to drive the two lock ladder rack slides 603 to move towards each other when unlocking the freight elevator and drive the two lock ladder rack slides 603 to move away from each other when locking the freight elevator.

[0060] In this embodiment, the lock ladder control mechanism 800 includes a lock ladder power base 801 installed on the upper beam 352 of the car frame, a lock ladder motor module 802 installed on the lock ladder power base 801, a locking power gear 803 installed on the output rotating shaft of the lock ladder motor module 802, and a lock ladder transmission gear 804 sleeved and fixed on the lock ladder transmission shaft 610. The locking power gear 803 is engaged with the lock ladder transmission gear 804. The lock ladder motor module 802 drives the locking power gear 803 to rotate, and the locking power gear 803 synchronously controls the lock ladder transmission gear 804 to drive the lock ladder transmission shaft 610 to rotate synchronously, so as to make the lock ladder transmission shaft 610 drive the lock ladder linkage mechanism 600 and the lock ladder insertion shaft 700 to act. The lock ladder motor module 802 adopts a servo motor or a combination of a servo motor and a speed reducer, which is specifically set according to the use requirements.

[0061] In this embodiment, a lock ladder detection switch 3541 for detecting whether the lock ladder insertion shaft 700 is inserted into the maintenance lock ladder hole 901 is provided on the lock ladder seat 354. A lock ladder monitoring groove is provided on the lock ladder seat 354 between the first lock ladder guide hole and the second lock ladder guide hole. Both the first lock ladder guide hole and the second lock ladder guide hole are communicated with the lock ladder monitoring groove. The lock ladder detection switch 3541 is installed on the lock ladder seat 354 and the monitoring end extends into the lock ladder monitoring groove and faces the lock ladder insertion shaft 700. The lock ladder detection switch 3541 is configured to generate a lock ladder signal when the lock ladder main body portion 701 presses the monitoring end of the lock ladder detection switch 3541.

[0062] In this embodiment, the elevator locking motor module 802 is connected and controlled by the car control module 370. The car control module 370 is electrically connected to the elevator locking detection switch 3541 and the elevator locking motor module 802. When the elevator control cabinet 100 receives the maintenance signal of the freight elevator, the elevator control cabinet 100 outputs a maintenance elevator locking signal to the car control module 370. The car control module 370 controls the elevator locking shaft 700 to extend by using the elevator locking motor module 802 and the elevator locking linkage mechanism 600, so that the elevator locking shaft 700 can be inserted into the maintenance elevator locking hole 901 to complete the elevator locking operation. When the locking main body 701 of the elevator locking shaft 700 presses against the monitoring end of the elevator locking detection switch 3541, the elevator locking detection switch 3541 generates an elevator locking signal and feeds it back to the car control module 370. When the car control module 370 receives the elevator locking signals fed back by at least four elevator locking detection switches 3541, the car control module 370 feeds back an elevator locking completion signal to the elevator control cabinet 100, so that the maintenance worker can know whether the freight elevator car 300 is effectively locked. When the number of elevator locking signals received by the car control module 370 is less than four, the car control module 370 feeds back an elevator locking abnormality signal to the elevator control cabinet 100, so that the maintenance worker can know and pay attention to the elevator locking abnormality, thus ensuring the safety during the maintenance process.

[0063] In this embodiment, the elevator control cabinet 100 is electrically connected to a speed detection module 104 for monitoring the moving speed of the freight elevator car 300. An emergency stop cooperation unit 910 is provided on the elevator locking cooperation seat 900. When the elevator control cabinet 100 receives the control safety gear action signal fed back by the safety gear action detection switch, the elevator control cabinet 100 monitors the speed of the freight elevator car 300 by using the speed detection module 104. When the freight elevator runs out of control due to overspeed and the elevator safety gear 500 cannot stop the freight elevator car 300, the elevator control cabinet 100 sends a car overspeed out-of-control signal to the car control module 370. The car control module 370 controls the elevator locking motor module 802 according to the car overspeed out-of-control signal to drive the elevator locking linkage mechanism 600 to drive the elevator locking shaft 700 to move and extend. As the freight elevator car 300 moves, the extended elevator locking shaft 700 is blocked by the emergency stop cooperation unit 910, thereby blocking the continuous movement of the freight elevator car 300 and achieving the purpose of stopping the freight elevator car 300.

[0064] In this embodiment, the emergency stop cooperation unit 910 includes an emergency cooperation seat 911, a stop movable block 912 and a brake reset spring 913. The emergency cooperation seat 911 is installed on the ladder lock cooperation seat 900. The bottom and top of the emergency cooperation seat 911 are provided with emergency cooperation protrusions 9111 for blocking the ladder lock plug shaft 700. The emergency cooperation protrusion 9111 is provided with two emergency side walls 9112 on the side facing away from the emergency cooperation seat 911. The emergency cooperation protrusion 9111 and the two emergency side walls 9112 are combined to form a U-shaped emergency braking groove. The emergency braking groove is away from the opening of the emergency cooperation protrusion 9111 to form an emergency vertical entrance. The emergency vertical entrance is used for the ladder lock plug shaft 700 in the extended state to vertically enter the emergency braking groove; the stop movable block 912 is in the emergency braking groove and is rotatably installed on the two emergency installation shafts 914. Between the emergency side walls 9112, an emergency limit slot 9113 is provided on the emergency side wall 9112, and two symmetrically arranged emergency limit arms 9121 are provided on the braking movable block 912, and the two emergency limit arms 9121 are respectively movable in the emergency limit slots 9113 of the two emergency side walls 9112, and the emergency limit slots 9113 have anti-slip limit surfaces 9114; the emergency matching protrusion 9111 and the emergency side wall 9112 are commonly connected with a tension spring seat 915, one end of the brake reset tension spring 913 is connected to one end of the braking movable block 912, and the other end is connected to the tension spring seat 915; the emergency limit arm 9121 is kept in contact with the anti-slip limit surface 9114 under the action of the brake reset tension spring 913, so that the other end of the braking movable block 912 closes the emergency vertical entrance, preventing the ladder lock shaft 700 from slipping out of the emergency vertical entrance.

[0065] In this embodiment, an emergency buffer rubber block located in the emergency brake groove is installed on the side of the emergency mating protrusion 9111 facing away from the emergency mating seat 911, and the emergency buffer rubber block is used to reduce the impact force of the lock ladder plug shaft 700 on the emergency mating protrusion 9111. Furthermore, the two emergency side walls 9112 are connected to an emergency reinforcement plate at one end away from the emergency mating protrusion 9111, which is used to improve the structural stability of the emergency side walls 9112.

[0066] In this embodiment, the lock ladder linkage rod 604 includes a linkage long nut 6041, a first linkage rod 6042, and a second linkage rod 6043. The two ends of the linkage long nut 6041 are respectively provided with a first linkage screw hole and a second linkage screw hole extending along the axial direction. The thread rotation directions of the first linkage screw hole and the second linkage screw hole are opposite; one end of the first linkage rod 6042 is fixed on the lock ladder rack slide 603, and the other end is in threaded fit with the first linkage screw hole. One end of the second linkage rod 6043 is fixed on the lock ladder insertion shaft 700, and the other end is in threaded fit with the second linkage screw hole; by rotating the linkage long nut 6041, the length of the lock ladder linkage rod 604 can be quickly adjusted, so that the lock ladder linkage rod 604 can better link the lock ladder insertion shaft 700.

[0067] When the freight elevator runs out of control at high speed and the elevator safety gear 500 cannot brake and stop the freight elevator car 300, the elevator control cabinet 100 sends a car out-of-control signal at high speed to the car control module 370. The car control module 370 controls the lock ladder motor module 802 according to the car out-of-control signal at high speed to drive the lock ladder linkage mechanism 600 to drive the lock ladder insertion shaft 700 to move out. As the freight elevator car 300 moves, the protruding lock ladder insertion shaft 700 presses against the other end of the braking movable block 912, so that the other end of the braking movable block 912 rotates around the emergency mounting shaft 914 and approaches the emergency mating convex portion 9111. At this time, the braking return spring 913 gradually stores energy, and the lock ladder insertion shaft 700 can continue to move in the direction of the emergency mating convex portion 9111; when the lock ladder insertion shaft 700 moves and separates from the other end of the braking movable block 912, the braking movable block 912 is reset under the energy release action of the braking return spring 913. The other end of the braking movable block 912 rotates around the emergency mounting shaft 914 and moves away from the emergency mating convex portion 9111, so that the emergency limiting arm 9121 is reset and abuts against the anti-detachment limiting surface 9114 to close the emergency vertical entrance; when the lock ladder insertion shaft 700 is blocked by the emergency buffer rubber block on the emergency mating convex portion 9111, the purpose of braking and stopping the freight elevator car 300 is achieved. Moreover, by using the braking movable block 912 to limit the lock ladder insertion shaft 700 from disengaging from the emergency braking groove, the rebound amplitude of the freight elevator car 300 can be reduced, so that the freight elevator car 300 can enter the stationary state as soon as possible.

[0068] The above is only the preferred embodiment of the present invention. As long as the technical solutions that achieve the purpose of the present invention by basically the same means fall within the protection scope of the present invention.

Claims

1. A freight elevator with effective protection, comprising an elevator control cabinet (100), a hoistway (200), and a freight elevator car (300) disposed in the hoistway (200). Multiple destination landing stations (210) are provided outside the hoistway (200). Each of the destination landing stations (210) has an elevator landing door (220) and a landing call device (230). The elevator landing door (220) and the car door device (330) of the freight elevator car (300) are both connected to the elevator control cabinet (100). The landing call device (230) includes a landing call panel (231), a call installation box (232) disposed on the back of the landing call panel (231), and a call control module (233) disposed in the call installation box (232). The call control module (233) is communicatively connected to the elevator control cabinet (100). The elevator control cabinet (100) is electrically connected to a leveling monitoring switch (101), a car door monitoring switch (102), and a landing door monitoring switch (103). It is characterized in that: The call control module (233) is connected to a waiting elevator monitoring module (400) for monitoring whether there are people or / and items waiting for the elevator in the destination landing station (210) and a status prompting device for prompting the status of the freight elevator car (300) when it is at the destination landing station (210). The status prompting device includes a status prompting light module (236) for prompting using light signals and a voice prompting module (237) for prompting using sounds. The status prompting light module (236) and the voice prompting module (237) are both integrally installed on the landing call panel (231).

2. The freight elevator according to claim 1, wherein: A call display screen (234) and a call button module (235) electrically connected to the call control module (233) are provided on the landing call panel (231).

3. The freight elevator according to claim 2, characterized in that: A display window (2310) and call button holes are provided on the front of the landing call panel (231). The display area of the call display screen (234) corresponds to the display window (2310). The call button module (235) includes an up call button (2351) or / and a down call button (2352). The call button holes include an up call hole corresponding to the up call button (2351) or / and a down call hole corresponding to the down call button (2352).

4. The freight elevator according to claim 1, wherein: The status prompting light module (236) includes a first prompting light (2361) and a second prompting light (2362). The first prompting light (2361) and the second prompting light (2362) are both integrally installed on the back of the landing call panel (231). A first light window corresponding to the first prompting light (2361) and a second light window corresponding to the second prompting light (2362) are provided on the front of the landing call panel (231).

5. The freight elevator according to claim 4, characterized in that: An out-sound structure (2311) corresponding to the sound-emitting end of the voice prompting module (237) is provided on the front of the landing call panel (231). The first light window and the second light window are respectively located on both sides of the out-sound structure (2311).

6. The freight elevator according to claim 1, characterized in that: The freight elevator car (300) includes a freight elevator frame, a chassis (310), a car wall assembly (320), a car door device (330), and a car top (340). The freight elevator frame includes a plurality of car frames (350) arranged from front to back. The top of the lower beam (353) of the car frame (350) is commonly connected to the bottom of the chassis (310). The car wall assembly (320) is arranged around the edge of the top of the chassis (310). The car top (340) is installed on the top of the car wall assembly (320). A load-bearing space is formed by enclosing the chassis (310), the car wall assembly (320), and the car top (340). At least one car door opening is provided on the car wall assembly (320), and a car door device (330) is correspondingly arranged for each car door opening.

7. The freight elevator according to claim 6, characterized in that: A hidden ventilation groove (32E) is provided on the outer side of the car wall assembly (320). A hidden ventilation hole (32F) hidden inside it is provided in the hidden ventilation groove (32E). The two ends of the hidden ventilation hole (32F) are respectively communicated with the load-bearing space and the hidden ventilation groove (32E).

8. The freight elevator according to claim 7, wherein: The car wall assembly (320) includes a front wall unit (32A), a rear wall unit (32B), a left wall unit (32C), and a right wall unit (32D) distributed in a quadrilateral shape. The bottoms of the front wall unit (32A), the rear wall unit (32B), the left wall unit (32C), and the right wall unit (32D) are all connected to the top of the chassis (310), and the tops are all connected to the car top (340). The front wall unit (32A) is provided with the car door opening; the hidden ventilation grooves (32E) are provided at both the upper and lower ends on the outer sides of the rear wall unit (32B), the left wall unit (32C), and the right wall unit (32D).

9. The freight elevator according to claim 1, characterized in that: An anti-collision monitoring light curtain (360) is provided on the car door device (330). The anti-collision monitoring light curtain (360) is connected and controlled by a car control module (370), and the car control module (370) is communicatively connected with the elevator control cabinet (100).

10. The freight elevator according to claim 9, characterized in that: The car door device (330) includes two car door panels (331). The anti-collision monitoring light curtain (360) includes a light curtain receiving end (361) and a light curtain transmitting end (362). The light curtain receiving end (361) and the light curtain transmitting end (362) are respectively installed on the two car door panels (331). The light incident port of the light curtain receiving end (361) and the light emitting port of the light curtain transmitting end (362) both face the front middle position of the elevator landing door (220) opening and form a light curtain detection area.

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