Extra-large heavy-duty freight elevator

Abstract

An extra-large heavy-duty freight elevator, relating to the technical field of elevators, and comprising a freight elevator frame (200). The freight elevator frame comprises a plurality of longitudinally arranged car frames (220). Each car frame comprises two car frame columns (221), a car frame upper beam (222) having left and right ends respectively connected to the upper ends of the two car frame columns, and a car frame lower beam (223) having left and right ends respectively connected to the lower ends of the two car frame columns; the car frame upper beam is provided with an elevator-locking linkage mechanism (250), and two elevator-locking insertion shafts (260) connected by the elevator-locking linkage mechanism and driven by the elevator-locking linkage mechanism to synchronously extend and retract; and the two elevator-locking insertion shafts are respectively guided and fitted on the left and right ends of the car frame upper beam. Action input ends of every two elevator-locking linkage mechanisms adjacent in the front-to-back direction are transmittingly connected by means of an elevator-locking transmission shaft (25A), and each elevator-locking transmission shaft is driven by an elevator-locking control mechanism (27) to rotate. All elevator-locking insertion shafts can be simultaneously driven to be inserted into corresponding maintenance elevator-locking holes so as to complete locking actions for freight elevator cars, effectively simplifying the elevator-locking process and reducing the operation burden of maintenance workers, thereby improving the efficiency and safety of the overall maintenance operation.

Description

A super-large load-bearing freight elevator Technical Field

[0001] This invention relates to the field of elevator technology, specifically to an ultra-large load-bearing freight elevator. Background Technology

[0002] In modern industry, logistics, warehousing, and large commercial facilities, extra-large freight elevators play a crucial role. They are specifically designed to carry goods far exceeding conventional weights, meeting the vertical transportation needs of heavy cargo. These elevator systems not only possess astonishing load-bearing capacity, but their elevator cars also have a correspondingly increased weight to ensure structural stability and safety.

[0003] With the increase in the size and load capacity of freight elevators, their safety maintenance has become particularly important and complex. Especially during structural repairs of the elevator car, it is crucial to ensure that the car does not accidentally fall during the repair process to protect the lives of maintenance workers. To this end, a common practice in existing technology is to install at least two locking assemblies on each car frame of the freight elevator. These locking assemblies can securely lock the freight elevator car within the shaft during maintenance, effectively preventing any form of fall.

[0004] However, while this setup improves the safety of maintenance work to some extent, in practice, each locking mechanism typically requires individual operation by a maintenance worker to lock and unlock, which undoubtedly increases the complexity and time consumption of the operation. Especially in emergency repairs or situations requiring rapid locking, operating each locking mechanism individually can delay valuable maintenance time and even affect maintenance efficiency and worker safety. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides an ultra-large load-bearing freight elevator.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A super-large load-bearing freight elevator, including a shaft and a freight elevator frame. The freight elevator frame includes a chassis and multiple car frames arranged longitudinally. Each car frame includes two car frame columns, upper car frame beams connected to the upper ends of the two car frame columns on the left and right sides respectively, and lower car frame beams connected to the lower ends of the two car frame columns on the left and right sides respectively. The bottom of the chassis is simultaneously fixedly connected to the top of all the lower car frame beams. A car wall assembly is installed on the chassis, and a car top is installed on the top of the car wall assembly. Each upper car frame beam is provided with a locking mechanism and two locking shafts that are connected and driven to extend and retract synchronously by the locking mechanism. The two locking shafts are respectively guided and fitted to the left and right ends of the upper car frame beam. The action input ends of two adjacent locking mechanisms are connected by a locking drive shaft, which is driven to rotate by a locking control mechanism. The shaft is provided with multiple locking ladder mating arrays corresponding to each locking ladder insert shaft. The locking ladder mating array includes multiple locking ladder mating seats arranged from top to bottom. The locking ladder mating seats are provided with maintenance locking ladder holes for the locking ladder insert shaft to be inserted to lock the ladder.

[0007] In this invention, a ladder lock seat is provided on the upper beam of the car frame, and the ladder lock insert includes a ladder lock body and a ladder lock function connected along the axial direction. The diameter of the ladder lock body is larger than the diameter of the ladder lock function. The ladder lock function is used to be inserted into the maintenance ladder lock hole. The two ends of the ladder lock seat are respectively provided with a first ladder lock guide hole for guiding the ladder lock body and a second ladder lock guide hole for guiding the ladder lock function.

[0008] In this invention, the locking ladder linkage mechanism includes a locking ladder linkage base, a locking ladder rotating shaft, and two locking ladder rack slides. The locking ladder linkage base is mounted on the upper beam of the car frame and has a locking ladder linkage cavity. The locking ladder rotating shaft passes through the locking ladder linkage cavity and is rotatably mounted on the upper beam of the car frame and the locking ladder linkage base at both ends, respectively. The locking ladder rotating shaft is coaxially connected to the locking ladder drive shaft. The locking ladder rack slides are guided and fitted within the locking ladder linkage cavity. One end of the locking ladder rack slide is provided with a locking ladder linkage rod for connecting and driving the locking ladder insertion shaft to move, and the other end is provided with a locking ladder rack portion located within the locking ladder linkage cavity. A locking ladder linkage gear driven to rotate by the locking ladder rotating shaft is provided between the locking ladder rack portions of the two locking ladder rack slides. The locking ladder linkage gear is located within the locking ladder linkage cavity and is fitted and fixed on the locking ladder rotating shaft, with both ends meshing with the locking ladder rack portions of the two locking ladder rack slides, respectively.

[0009] In this invention, the locking ladder control mechanism includes a locking ladder power unit installed on the upper beam of the car frame and a locking ladder transmission gear mounted and fixed on the locking ladder transmission shaft. The actuation output end of the locking ladder power unit is connected to the locking ladder transmission gear.

[0010] In this invention, the locking ladder power unit includes a locking ladder power base mounted on the upper beam of the car frame, a locking ladder motor module mounted on the locking ladder power base, and a locking power gear mounted on the output shaft of the locking ladder motor module. The locking power gear meshes with the locking ladder transmission gear.

[0011] In this invention, the lock ladder base is provided with a lock ladder detection switch for detecting whether the lock ladder insert shaft is inserted into the maintenance lock ladder hole.

[0012] In this invention, the ladder lock base is provided with a ladder lock monitoring groove located between the first ladder lock guide hole and the second ladder lock guide hole. Both the first ladder lock guide hole and the second ladder lock guide hole are connected to the ladder lock monitoring groove. The ladder lock detection switch is installed on the ladder lock base and its monitoring end extends into the ladder lock monitoring groove and faces the ladder lock insertion shaft. The ladder lock detection switch is configured to generate a ladder lock signal when the ladder lock body part presses against the monitoring end of the ladder lock detection switch.

[0013] In this invention, the extra-large load-bearing freight elevator also includes an elevator control cabinet. The elevator lock motor module is connected and controlled by an emergency control device. The emergency control device includes an emergency control module and an emergency communication module. The emergency control module is electrically connected to the elevator lock monitoring switch, the elevator lock motor module, and the emergency communication module. The emergency communication module is communicatively connected to the elevator control cabinet.

[0014] In this invention, the elevator control cabinet is electrically connected to a speed detection module for monitoring the moving speed of the freight elevator car, and the elevator locking mating seat is equipped with an emergency stop mating unit.

[0015] In this invention, the locking ladder linkage rod includes a linkage long nut, a first linkage rod, and a second linkage rod. The two ends of the linkage long nut are respectively provided with a first linkage screw hole and a second linkage screw hole extending along the axial direction. The rotation direction of the threads of the first linkage screw hole is opposite to that of the threads of the second linkage screw hole. One end of the first linkage rod is fixed on the locking ladder rack slide, and the other end is threaded into the first linkage screw hole. One end of the second linkage rod is fixed on the locking ladder insert shaft, and the other end is threaded into the second linkage screw hole.

[0016] The beneficial effects of this invention are as follows: By linking the elevator lock control mechanism, the elevator lock drive shaft, and the elevator lock linkage mechanism, this invention can drive all the elevator lock pins to be inserted into the corresponding maintenance elevator lock holes, thereby completing the locking action of the freight elevator car. This effectively simplifies the elevator lock process, reduces the operational burden on maintenance workers, and ensures the stability and safety of the freight elevator car during maintenance, thereby improving the efficiency and safety of the overall maintenance operation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 is a perspective view of the extra-large load-bearing freight elevator; Figure 2 is a perspective view of the freight elevator car (first view); Figure 3 is a left view of the freight elevator car; Figure 4 is a perspective view of the freight elevator car (second view); Figure 5 is an installation diagram of the elevator locking control mechanism; Figure 6 is a combined diagram of the elevator locking drive shaft, elevator locking linkage mechanism, and elevator locking control mechanism; Figure 7 is a structural diagram of the emergency stop coordination unit; Figure 8 is a diagram of the coordination between the emergency stop coordination unit and the elevator locking insert shaft; Figure 9 is a diagram of the coordination between the safety gear mechanisms; Figure 10 is a diagram of the coordination between the elevator safety gear and the safety gear linkage mechanism; Figure 11 is a perspective view of the counterweight device; Figure 12 is a perspective view of the rubber clamping device; Figure 13 is an installation diagram of the rubber clamping device; Figure 14 is a perspective view of the machine room layout structure; Figure 15 is a diagram of the wire rope winding; Figure 16 is a block diagram of the module connection of the extra-large load-bearing freight elevator. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] Referring to Figures 1-16, an ultra-large load-bearing freight elevator includes a shaft, multiple car guide rails 100, and a freight elevator frame 200. The multiple car guide rails 100 are all installed within the shaft. The freight elevator frame 200 includes a chassis 210 and multiple longitudinally arranged car frames 220. Each car frame 220 includes two car frame columns 221, an upper car frame beam 222 connected to the upper ends of the two car frame columns 221 at its left and right ends respectively, and a lower car frame beam 223 connected to the lower ends of the two car frame columns 221 at its left and right ends respectively. The upper car frame beam 222 has its top left and right ends, and the lower car frame beam 223 has its bottom left and right ends. Both ends are provided with car guide shoe seats, and the car guide shoe seats are provided with freight elevator car guide shoes adapted to the car guide rail 100; the bottom of the chassis 210 is also fixedly connected to the top of all car frame lower beams 223; a car wall assembly 230 is installed on the chassis 210, and a car top 240 is installed on the top of the car wall assembly 230. The chassis 210, car wall assembly 230 and car top 240 are combined to form a freight elevator car with a carrying space. The car wall assembly 230 located at the front end and / or the rear end of the chassis 210 is provided with a car door for people and goods to enter and exit the carrying space.

[0022] Furthermore, each of the upper beams 222 of the car frame is equipped with a locking mechanism 250 and two locking shafts 260 that are connected and driven to extend and retract synchronously by the locking mechanism 250. The two locking shafts 260 are respectively guided and fitted on the left and right ends of the upper beam 222 of the car frame. The action input ends of two adjacent locking mechanisms 250 are connected by a locking drive shaft 25A, which is driven to rotate by the locking control mechanism 270. The shaft is provided with multiple locking mating arrays corresponding to each locking shaft 260. The locking mating array includes multiple locking mating seats 110 arranged from top to bottom. Each locking mating seat 110 is provided with a maintenance locking hole 111 for the locking shaft 260 to be inserted to lock the ladder.

[0023] When locking the freight elevator, the maintenance worker uses the elevator locking control mechanism 270 to drive all the elevator locking drive shafts 25A to rotate in the first rotation direction, causing each elevator locking linkage mechanism 250 to extend and insert the elevator locking shaft 260 into the maintenance elevator locking hole 111; when unlocking the freight elevator, the maintenance worker uses the elevator locking control mechanism 270 to drive all the elevator locking drive shafts 25A to rotate in the second rotation direction, causing each elevator locking linkage mechanism 250 to retract and exit the maintenance elevator locking hole 111.

[0024] This embodiment, through the linkage between the elevator lock control mechanism 270, the elevator lock drive shaft 25A, and the elevator lock linkage mechanism 250, can drive all the elevator lock insert shafts 260 to be inserted into the corresponding maintenance elevator lock holes 111, thereby completing the locking action of the freight elevator car. This effectively simplifies the elevator locking process, reduces the operational burden on maintenance workers, and ensures the stability and safety of the freight elevator car during maintenance, thereby improving the overall efficiency and safety of maintenance operations.

[0025] In this embodiment, a ladder lock seat 280 is provided on the upper beam 222 of the car frame, and the ladder lock insert 260 is guided and connected to the ladder lock seat 280. Further, the ladder lock insert 260 includes a ladder lock body 261 and a ladder lock function 262 connected axially. The diameter of the ladder lock body 261 is larger than the diameter of the ladder lock function 262. The ladder lock function 262 is used to insert into the maintenance ladder lock hole 111. The ladder lock seat 280 has a first ladder lock guide hole for guiding the ladder lock body 261 and a second ladder lock guide hole for guiding the ladder lock function 262 at both ends.

[0026] In this embodiment, the locking ladder linkage mechanism 250 includes a locking ladder linkage base 251, a locking ladder rotating shaft 252, and two locking ladder rack slides 253. The locking ladder linkage base 251 is installed on the upper beam 222 of the car frame and has a locking ladder linkage cavity. The locking ladder rotating shaft 252 passes through the locking ladder linkage cavity and is rotatably installed on the upper beam 222 of the car frame and the locking ladder linkage base 251 at both ends. The locking ladder rotating shaft 252 is coaxially connected to the locking ladder drive shaft 25A. Furthermore, the locking rack slide 253 is guided and fitted within the locking linkage cavity. One end of the locking rack slide 253 is provided with a locking linkage rod 254 for connecting and driving the locking ladder insertion shaft 260 to move, and the other end is provided with a locking rack portion 2531 located within the locking linkage cavity. A locking linkage gear 255 driven to rotate by the locking ladder shaft 252 is provided between the locking rack portions 2531 of the two locking rack slides 253. The locking linkage gear 255 is located within the locking linkage cavity and is fitted and fixed on the locking ladder shaft 252. Both ends of the locking gear 255 mesh with the locking rack portions 2531 of the two locking rack slides 253 respectively. The locking linkage gear 255 is configured to drive the two locking rack slides 253 to move towards each other when unlocking the freight elevator and to drive the two locking rack slides 253 to move away from each other when locking the freight elevator.

[0027] In this embodiment, the locking ladder control mechanism 270 includes a locking ladder power unit mounted on the upper beam 222 of the car frame and a locking ladder transmission gear 271 fixedly mounted on the locking ladder transmission shaft 25A. The output end of the locking ladder power unit is connected to the locking ladder transmission gear 271. Further, the locking ladder power unit includes a locking ladder power base 272 mounted on the upper beam 222 of the car frame, a locking ladder motor module 273 mounted on the locking ladder power base 272, and a locking power gear 274 mounted on the output shaft of the locking ladder motor module 273. The locking power gear 274 meshes with the locking ladder transmission gear 271. The locking ladder motor module 273 drives the locking power gear 274 to rotate, and the locking power gear 274 synchronously controls the locking ladder transmission gear 271 to drive the locking ladder transmission shaft 25A to rotate synchronously, thereby causing the locking ladder transmission shaft 25A to drive the locking ladder linkage mechanism 250 and the locking ladder insertion shaft 260 to move. The locking ladder motor module 273 uses a servo motor or a combination of a servo motor and a reducer, depending on the specific application requirements.

[0028] In this embodiment, the ladder lock base 280 is provided with a ladder lock detection switch 281 for detecting whether the ladder lock insert 260 is inserted into the maintenance ladder lock hole 111. The ladder lock base 280 is provided with a ladder lock monitoring groove located between the first ladder lock guide hole and the second ladder lock guide hole. Both the first ladder lock guide hole and the second ladder lock guide hole are connected to the ladder lock monitoring groove. The ladder lock detection switch 281 is installed on the ladder lock base 280 and its monitoring end extends into the ladder lock monitoring groove and faces the ladder lock insert 260. The ladder lock detection switch 281 is configured to generate a ladder lock signal when the ladder lock body 261 presses against the monitoring end of the ladder lock detection switch 281.

[0029] In this embodiment, the extra-large load-bearing freight elevator also includes an elevator control cabinet. The elevator lock motor module 273 is connected and controlled by an emergency control device. The emergency control device includes an emergency control module and an emergency communication module. The emergency control module is electrically connected to the elevator lock monitoring switch, the elevator lock motor module 273, and the emergency communication module. The emergency communication module is communicatively connected to the elevator control cabinet. When the elevator control cabinet receives a freight elevator maintenance signal, it outputs a maintenance lock signal to the emergency control module. The emergency control module utilizes the elevator lock motor module 273 and the elevator lock... The linkage mechanism 250 controls the extension of the locking shaft 260, allowing it to be inserted into the maintenance locking hole 111 to complete the locking action. When the locking body 261 of the locking shaft 260 presses against the monitoring end of the locking detection switch 281, the locking detection switch 281 generates a locking signal and sends it back to the emergency control module. When the emergency control module receives at least four locking signals from the locking detection switches 281, it sends a locking completion signal to the elevator control cabinet, allowing maintenance workers to know whether the elevator car has been effectively locked. When the emergency control module receives fewer than four locking signals, it sends an abnormal locking signal to the elevator control cabinet and simultaneously activates the audible and visual alarm located on the top of the elevator frame 200, alerting maintenance workers to the abnormal locking situation and ensuring safety during maintenance.

[0030] In this embodiment, the elevator control cabinet is electrically connected to a speed detection module for monitoring the moving speed of the freight elevator car, and the elevator lock mating seat 110 is provided with an emergency stop mating unit 290. When the elevator control cabinet receives a control safety clamp action signal from the safety clamp action detection switch 390, the elevator control cabinet uses the speed detection module to monitor the speed of the freight elevator car. When the freight elevator overspeeds and loses control and the elevator safety clamp 310 cannot stop the freight elevator car, the elevator control cabinet sends a car overspeed loss signal to the emergency control module. The emergency control module controls the elevator lock power device to drive the elevator lock linkage mechanism 250 to move and extend the elevator lock shaft 260. As the freight elevator car moves, the extended elevator lock shaft 260 is blocked by the emergency stop mating unit 290, thereby preventing the freight elevator car from continuing to move and achieving the purpose of stopping the freight elevator car.

[0031] In this embodiment, the emergency stop engagement unit 290 includes an emergency engagement seat 291, a stop movable stop block 292, and a brake return spring 293. The emergency engagement seat 291 is mounted on the lock ladder engagement seat 110. Both the bottom and top of the emergency engagement seat 291 are provided with emergency engagement protrusions 2911 for blocking the lock ladder insert shaft 260. Two emergency sidewalls 2912 are provided on the side of the emergency engagement protrusion 2911 facing away from the emergency engagement seat 291. The emergency engagement protrusion 2911 and the two emergency sidewalls 2912 together form a U-shaped emergency braking groove. The opening of the emergency braking groove away from the emergency engagement protrusion 2911 forms an emergency vertical entry port, which allows the extended lock ladder insert shaft 260 to vertically enter the emergency braking groove. The stop movable stop block 292 is rotatably mounted on the two emergency engagement protrusions using an emergency mounting shaft within the emergency braking groove. Between the side walls 2912, the emergency side wall 2912 is provided with an emergency limiting slot 2913, and the stop movable block 292 is provided with two symmetrically arranged emergency limiting arms 2921. The two emergency limiting arms 2921 are respectively movable in the emergency limiting slots 2913 of the two emergency side walls 2912. The emergency limiting slots 2913 have anti-detachment limiting surfaces 2914. The emergency mating protrusion 2911 and the emergency side wall 2912 are connected together with a tension spring seat 294. One end of the brake reset tension spring 293 is connected to one end of the stop movable block 292, and the other end is connected to the tension spring seat 294. Under the action of the brake reset tension spring 293, the emergency limiting arm 2921 is kept in abutting against the anti-detachment limiting surface 2914, so that the other end of the stop movable block 292 closes the emergency vertical entry port and prevents the locking ladder insert shaft 260 from coming out of the emergency vertical entry port position.

[0032] In this embodiment, an emergency buffer block 295 located within an emergency braking groove is installed on the side of the emergency mating protrusion 2911 facing away from the emergency mating seat 291. The emergency buffer block 295 is used to reduce the impact force of the locking ladder shaft 260 on the emergency mating protrusion 2911. Furthermore, the ends of the two emergency sidewalls 2912 away from the emergency mating protrusion 2911 are connected to an emergency reinforcing plate 296 that avoids the other end of the stopping block 292, thereby improving the structural stability of the emergency sidewalls 2912.

[0033] In this embodiment, the ladder locking seat 110 includes a ladder locking fixing part 112 and a ladder locking mating part 113 integrally formed on the ladder locking fixing part 112. The ladder locking fixing part 112 is installed on the car guide rail 100, and the maintenance ladder locking hole 111 is opened on the ladder locking mating part 113. The emergency mating seat 291 is provided with an emergency mating groove 2915 for the ladder locking mating part 113 to be embedded and installed. The ladder locking part 113 is fixed in the emergency mating groove 2915 by bolt connection, and its upper and lower ends abut against the upper groove wall and lower groove wall of the emergency mating groove 2915, respectively. This allows the ladder locking part 113 to better support and fix the emergency mating seat 291, improving the installation stability of the emergency mating seat 291. Furthermore, a ladder locking clearance hole 2916 corresponding to the maintenance ladder locking hole 111 is provided on one side wall of the emergency mating groove 2915. The ladder locking clearance hole 2916 can prevent the emergency mating seat 291 from interfering with the ladder locking pin 260.

[0034] In this embodiment, the ladder locking linkage 254 includes a linkage long nut 2541, a first linkage rod 2542, and a second linkage rod 2543. The linkage long nut 2541 has a first linkage screw hole and a second linkage screw hole extending axially at both ends, respectively. The rotation direction of the threads in the first linkage screw hole is opposite to that in the second linkage screw hole. One end of the first linkage rod 2542 is fixed to the ladder locking rack slide 253, and the other end is threaded into the first linkage screw hole. One end of the second linkage rod 2543 is fixed to the ladder locking insert shaft 260, and the other end is threaded into the second linkage screw hole. By rotating the linkage long nut 2541, the length of the ladder locking linkage 254 can be quickly adjusted, allowing the ladder locking linkage 254 to better engage with the ladder locking insert shaft 260.

[0035] When the freight elevator overspeeds and the elevator safety brake 310 fails to stop the freight elevator car, the elevator control cabinet sends a car overspeed and loss of control signal to the emergency control module. Based on this signal, the emergency control module controls the elevator locking power unit to drive the elevator locking linkage mechanism 250, which in turn moves and extends the elevator locking pin 260. As the freight elevator car moves, the extended elevator locking pin 260 presses against the other end of the stop block 292, causing the other end of the stop block 292 to rotate around the emergency mounting shaft towards the emergency engagement protrusion 2911. At this time, the brake reset spring 293 gradually stores energy, while the elevator locking pin 260 continues to move... The emergency engagement protrusion 2911 moves in the direction of movement. When the locking shaft 260 moves and separates from the other end of the stop block 292, the stop block 292 resets under the energy release of the brake reset spring 293. The other end of the stop block 292 rotates away from the emergency engagement protrusion 2911 around the emergency installation shaft, allowing the emergency limit arm 2921 to reset and abut against the anti-disengagement limit surface 2914 to close the emergency vertical entry. When the locking shaft 260 is blocked by the emergency buffer rubber block 295 on the emergency engagement protrusion 2911, the purpose of stopping the freight elevator car is achieved. Moreover, by using the stop block 292 to restrict the locking shaft 260 from disengaging from the emergency brake groove, the rebound amplitude of the freight elevator car can be reduced, allowing the freight elevator car to enter a stationary state as quickly as possible.

[0036] In a preferred embodiment, each car frame 220 is provided with a set of safety clamp mechanism 300. The safety clamp mechanism 300 includes two elevator safety clamps 310 respectively provided on two car frame columns 221 and a safety clamp linkage mechanism provided on the lower beam 223 of the car frame for linking the actions of the two elevator safety clamps 310 on the same car frame 220. The two adjacent safety clamp linkage mechanisms are connected by a brake synchronizing rod 320 to make them work synchronously.

[0037] In a preferred embodiment, the safety clamp linkage mechanism includes a lifting long shaft 330, a lifting short shaft 340, a lifting arm 350, a lifting linkage rod 360, and two safety clamp linkage arms 370. The lifting long shaft 330 and the lifting short shaft 340 are rotatably mounted on the left and right ends of the lower beam 223 of the car frame, respectively. The lifting arm 350 is mounted on one end of the lifting long shaft 330. The lifting arm 350 is used to connect with the speed limiter rope of the speed limiter. The speed limiter is prior art and therefore will not be described in detail.

[0038] Furthermore, each safety clamp linkage arm 370 is connected to control the operation of an elevator safety clamp 310 mounted on the car frame column 221. The two safety clamp linkage arms 370 are respectively mounted on the lifting long shaft 330 and the lifting short shaft 340. One safety clamp linkage arm 370 is driven to rotate by the lifting long shaft 330, and the other safety clamp linkage arm 370 is driven to rotate by the lifting short shaft 340. The lifting long shaft 330 is connected to the lifting short shaft 340 through the lifting linkage rod 360 to rotate synchronously with it. The two adjacent lifting long shafts 330 are connected together by the brake synchronization rod 320 so that they rotate synchronously.

[0039] Furthermore, the lifting linkage 360 ​​includes a left support rod 361, a right support rod 362, and a long support nut 363. The left support rod 361 includes a left hinge seat at one end and a left screw section at the other end, and the left hinge seat is operatively connected to the lifting long shaft 330. The right support rod 362 includes a right hinge seat at one end and a right screw section at the other end, and the right hinge seat is operatively connected to the lifting short shaft 340. The long support nut 363 has a first lifting screw hole and a second lifting screw hole extending axially at both ends, respectively. The rotation direction of the threads in the first lifting screw hole is opposite to that in the second lifting screw hole. At least a portion of the threads of the left screw section is adapted to fit into the first lifting screw hole, and at least a portion of the threads of the right screw section fits into the second lifting screw hole. The length of the lifting linkage rod 360 can be quickly adjusted by rotating the long nut 363 of the support rod, without disconnecting from other components. This simplifies the operation, reduces the difficulty of adjustment, improves the efficiency of adjustment, and reduces time costs. Moreover, the connection between the lifting linkage rod 360 and other components does not need to be changed during the adjustment process, ensuring the overall stability and reliability of the equipment.

[0040] In a preferred embodiment, a left rocker arm 331 that rotates synchronously with the lifting long shaft 330 is fixedly mounted on it, and the end of the left rocker arm 331 away from the lifting long shaft 330 is hinged to a left hinge seat; a right rocker arm 341 that rotates synchronously with the lifting short shaft 340 is fixedly mounted on it, and the end of the right rocker arm 341 away from the lifting short shaft 340 is hinged to a right hinge seat, so that when the lifting long shaft 330 rotates, the lifting short shaft 340 can be driven to rotate synchronously under the action of the left rocker arm 331, the lifting linkage rod 360 and the right rocker arm 341.

[0041] In a preferred embodiment, the safety clamp linkage arm 370 is provided with two clamp block connecting parts 371 arranged symmetrically front and rear. The two clamp block connecting parts 371 are respectively connected and cooperated with the two clamp blocks of the elevator safety clamp 310, so that when the safety clamp linkage arm 370 moves, the two clamp blocks of the elevator safety clamp 310 can be linked to move, thereby realizing emergency braking.

[0042] In this embodiment, the clamp connecting part 371 is provided with a safety clamp linkage elongated hole, and the clamp of the elevator safety clamp 310 is provided with a clamp linkage member for inserting into the safety clamp linkage elongated hole. When the clamp connecting part 371 moves, it can link the clamp linkage member to drive the clamp of the elevator safety clamp 310 to move. Further, the car frame lower beam 223 is composed of two car frame lower beams arranged symmetrically front and rear. The front and rear ends of the lifting long shaft 330 and the lifting short shaft 340 are respectively rotatably fitted on the two car frame lower beams. The elevator safety clamp 310 is installed in the car frame column groove of the car frame column 221 facing away from the chassis 210. The car frame column 221 is provided with a safety brake opening for the clamp connecting part 371 to pass into the car frame column groove.

[0043] In this embodiment, the safety clamp braking mechanism further includes a strut reset seat 380, which is mounted on the lower beam 223 of the car frame. The strut reset seat 380 has a strut reset through hole for the left strut 361 to pass through. A strut reset spring 364 is fitted onto the left strut 361, and a strut reset nut 365 is threaded onto the left screw section. The two ends of the strut reset spring 364 are respectively limited by the strut reset seat 380 and the strut reset nut 365. After the lifting linkage rod 360 is activated, the strut reset spring 364 drives the lifting linkage rod 360 to reset.

[0044] In this embodiment, the safety clamp braking mechanism further includes a safety clamp action detection switch 390. The safety clamp action detection switch 390 is communicatively connected to the elevator control cabinet. The safety clamp action detection switch 390 is mounted on one side of the lower beam of the car frame using a safety clamp detection seat. The lifting short shaft 340 is provided with a safety clamp detection mating wheel 342 that is driven to rotate synchronously by the lifting short shaft 340. The outer circumferential surface of the safety clamp detection mating wheel 342 is provided with a detection clearance recess 3421. When the monitoring end of the safety clamp action detection switch 390 extends into the detection clearance recess 3421, the safety clamp action detection switch 390 does not send a safety clamp action signal. When the short shaft of the safety clamp linkage lifting mechanism rotates and drives the safety clamp linkage arm 370 to move, the safety clamp detection mating wheel 342 rotates synchronously and presses the monitoring end of the safety clamp action detection switch 390, thereby causing the safety clamp action detection switch 390 to send a control safety clamp action signal to the elevator control cabinet that controls the operation of the elevator.

[0045] In this embodiment, the bottom of all car frame upper beams 222 are connected to two return rope reinforcement structures. The two return rope reinforcement structures are respectively close to the two car frame uprights 221. Each return rope reinforcement structure includes two longitudinal top beams 224. The longitudinal top beams 224 are fixedly connected to all car frame upper beams 222, which improves the stability of the combined connection between the car frame upper beams 222. A lower return rope space is formed between the two longitudinal top beams 224 of the same return rope reinforcement structure. Each lower return rope space is provided with at least six car return rope wheels 226 respectively installed on different car frame upper beams 222. The car return rope wheels 226 are installed on the bottom of the car frame upper beams 222, and the lower end of the wheel body of the car return rope wheel 226 partially extends beyond the bottom surface of the longitudinal top beam 224, so that the wire rope is not interfered with by the longitudinal top beam 224. The above structure hides most of the car return rope wheels 226 in the lower return rope space, reducing the probability of the car return rope wheels 226 being damaged by external factors.

[0046] In this embodiment, there are eight car frames 220 arranged from front to back. Among them, the car return rope wheel 226 is provided on the upper beam 222 of the first, third, fourth, fifth, sixth and eighth car frames 220, counting from front to back.

[0047] In a preferred embodiment, each car frame upper beam 222 includes two car frame upper beam bodies arranged at a distance from front to back. The two car frame upper beam bodies are respectively connected to the front and rear sides of the car frame column 221, and an upper return rope space is formed between the two car frame upper beam bodies. The wheel body of the car return rope wheel 226 extends into the upper return rope space, so that the two car frame upper beam bodies protect the upper part of the car return rope wheel 226 and reduce the probability of the car return rope wheel 226 being damaged by external factors.

[0048] In this embodiment, a tie rod seat 2211 is provided on the middle part of the car frame column 221. The front and rear ends of the tie rod seat 2211 are respectively provided with a front lower inclined tie rod 2212 with its lower end tilting forward and downward and a rear lower inclined tie rod 2213 with its lower end tilting backward and downward. The upper ends of the front lower inclined tie rod 2212 and the rear lower inclined tie rod 2213 are both hinged to the tie rod seat 2211, and the lower ends are both mounted on the chassis 210 through a tie rod pivot.

[0049] In this embodiment, two adjacent tie rod seats 2211 are connected to a longitudinal support rod 2214. The longitudinal support rod 2214 is used to constrain the distance between the two adjacent car frame columns 221, reducing the probability of deformation and bending in the middle of the car frame column 221. Furthermore, each tie rod seat 2211 has a front upper inclined tie rod 2215 with its upper end tilting forward and upward. The lower end of the front upper inclined tie rod 2215 is hinged to the tie rod seat 2211, and the upper end is mounted on the upper support frame 225 through an upper tie rod pivot. At least three tie rod seats 2211 have rear upper inclined tie rods 2216 with their upper ends tilting backward and upward. The lower end of the rear upper inclined tie rod 2216 is hinged to the tie rod seat 2211, and the upper end is mounted on the upper support frame 225 by an upper tie rod pivot. In this embodiment, by setting the front lower inclined tie rod 2212, the rear lower inclined tie rod 2213, the longitudinal support rod 2214, the front upper inclined tie rod 2215, and the rear upper inclined tie rod 2216, the connection strength between each car frame 220 can be effectively improved, the structural stability of the freight elevator frame 200 can be enhanced, and the entire freight elevator can withstand higher loads to meet the usage requirements of ultra-large load freight elevators.

[0050] In a preferred embodiment, the shaft is provided with a counterweight guide rail and a counterweight device 400. The counterweight device 400 includes three counterweight modules 401 arranged from front to back. The counterweight modules 401 are equipped with a return rope pulley 402 and a counterweight guide shoe that is guided and fitted on the counterweight guide rail.

[0051] In a preferred embodiment, the extra-large freight elevator further includes a machine room layout structure 500, which is installed in the elevator machine room above the shaft. The machine room layout structure 500 includes a base structure and a load-bearing structure. The base structure includes a first machine room base 501, a second machine room base 502, and a third machine room base 503 arranged from front to back. The load-bearing structure includes a first longitudinal car beam 504 arranged from left to right, with its bottom connected to the top of the first machine room base 501, the second machine room base 502, and the third machine room base 503. The system comprises two longitudinal car beams 505, a first longitudinal counterweight beam 506, and a second longitudinal counterweight beam 507. A traction machine base 5011 and a counterweight rope head assembly 5012 are located at the top left end of the first machine room base 501, and a transverse guide rope pulley 5013 is located at the bottom. The traction machine base 5011 is situated at the front end of the second longitudinal car beam 505 and the first longitudinal counterweight beam 506. A traction main unit 5014 is mounted on the traction machine base 5011, and a traction sheave 5015 is mounted on the traction main unit 5014 and rotated thereon. The rotation axis of the transverse guide rope pulley 5013 and the rotation axis of the traction sheave 5015 are parallel to each other. The configuration includes: the counterweight rope head assembly 5012 corresponds to the front end of the second longitudinal counterweight beam 507; the rear end top of the second longitudinal car beam 505 is provided with a car rope head assembly 5051; the first longitudinal car beam 504 is provided with six first longitudinal car fixed rope pulleys 5041 distributed from front to back; the second longitudinal car beam 505 is provided with four second longitudinal car fixed rope pulleys 5052 distributed from front to back; both the first longitudinal counterweight beam 506 and the second longitudinal counterweight beam 507 are provided with four longitudinal counterweight fixed rope pulleys 5067 distributed from front to back; the rear end of the first longitudinal counterweight beam 506... The top end and the rear end of the second longitudinal counterweight beam 507 are connected together to a counterweight top frame 508. The counterweight top frame 508 is provided with a transverse counterweight fixed rope wheel 5081. The rotation axis of the longitudinal counterweight fixed rope wheel 5067 and the rotation axis of the transverse counterweight fixed rope wheel 5081 are perpendicular to each other, as are the rotation axis of the longitudinal counterweight fixed rope wheel 5067 and the rotation axis of the transverse guide rope wheel 5013. The rotation axis of the first longitudinal car fixed rope wheel 5041 and the rotation axis of the first longitudinal car fixed rope wheel 5041 are parallel to each other.

[0052] The above structure first combines and fixes the base structure and the load-bearing structure together to form the machine room layout structure 500, which effectively ensures the structural stability of the machine room layout structure 500, enabling the machine room traction machine to withstand greater loads and allowing the machine room layout structure 500 to effectively meet the operation and use requirements of ultra-large load freight elevators; moreover, the transverse guide rope sheave 5013, traction sheave 5015, counterweight rope head assembly 5012, car rope head assembly 5051, first longitudinal car fixed rope sheave 5041, second longitudinal car fixed rope sheave 5052, longitudinal counterweight fixed rope sheave 5067 and transverse counterweight fixed rope sheave 5081 together form a drive layout with a traction ratio of 12:1, thereby meeting the traction requirements of the return rope sheave 402 and the car return rope sheave 206.

[0053] In this embodiment, each car frame column 221 is fitted with a corresponding adhesive clamping device 700 mounted on the car roof 240. The adhesive clamping device 700 includes an adhesive clamping base 701 mounted on the car roof 240, a horizontal adhesive clamping module 702, and two longitudinal adhesive clamping modules 703 arranged symmetrically front to back. The horizontal adhesive clamping module 702 is fixed on the adhesive clamping base 701 and faces the side of the car frame column 221 towards the car wall assembly 230. The two horizontal adhesive clamping modules 702 correspond to the car frame column 221 respectively. On the front and rear sides of the 1, the rubber base 701 is provided with two rubber adjustment seats 704 whose positions can be adjusted forward and backward. Two longitudinal rubber modules 703 are respectively installed on the two rubber adjustment seats 704, so that the longitudinal rubber modules 703 can be adjusted forward and backward while the rubber adjustment seats 704 are in position. The horizontal rubber module 702 and the longitudinal rubber module 703 can effectively reduce the collision between the car frame column 221 and the car top 240, reduce the noise and vibration during the operation of the freight elevator, and improve the comfort of riding.

[0054] In this embodiment, the top of the car roof 240 is provided with a rubber-adhesive sliding groove 2401 extending from front to back. At least two rubber-adhesive locking blocks 2402 are provided within the rubber-adhesive sliding groove 2401. A longitudinal adjusting bolt 2403, threadedly connected to the rubber-adhesive locking block 2402, is inserted into the rubber-adhesive base 701. Each rubber-adhesive locking block 2402 corresponds to at least one longitudinal adjusting bolt 2403. After loosening the longitudinal adjusting bolt 2403, the rubber-adhesive base 701 can move back and forth on the car roof 240. Furthermore, the rubber-adhesive base 701 is provided with longitudinal adjusting elongated holes corresponding one-to-one with the longitudinal adjusting bolts 2403. The length direction of the longitudinal adjusting elongated holes extends in the left-right direction. The screw section of the longitudinal adjusting bolt 2403 passes through the longitudinal adjusting elongated hole and is threadedly connected to the rubber-adhesive locking block 2402.

[0055] In this embodiment, the adhesive base 701 is provided with two sets of adhesive front and rear adjustment holes. Each set of adhesive front and rear adjustment holes includes two long adhesive front and rear adjustment holes arranged from top to bottom. Two adhesive locking bolts 7041 are inserted through the adhesive adjustment seat 704. The screw section of each adhesive locking bolt 7041 passes through an adhesive front and rear adjustment long hole and is threaded with an adhesive locking nut 7042 to fix it. Loosening the adhesive locking nut 7042 allows the adhesive adjustment seat 704 to move back and forth, thereby realizing position adjustment so that the longitudinal adhesive module 703 can better match the car frame column 221.

[0056] Furthermore, the adhesive base 701 and the adhesive adjustment seat 704 are provided with two adhesive fixing through holes, wherein the two adhesive fixing through holes on the adhesive base 701 are arranged from front to back, and the two adhesive fixing through holes on the adhesive adjustment seat 704 are arranged from top to bottom; the horizontal adhesive module 702 and the vertical adhesive module 703 each include two rubber head 711 modules 710, and one rubber head 711 module 710 is installed in each adhesive fixing through hole.

[0057] In this embodiment, each rubber head 711 module 710 includes a rubber head 711, a rubber head bolt 712, and a rubber head nut 713. The rubber head 711 has an axially penetrating rubber head through-hole, and a rubber-clamping groove is provided within the through-hole. The head of the rubber head bolt 712 is fully fitted into the rubber-clamping groove. The threaded section of the rubber head bolt 712, which fixes the rubber head 711 module 710, passes through the rubber head through-hole and a rubber-clamping fixing through-hole, and is threadedly fitted with the rubber head nut 713 to fix it. Furthermore, both the rubber-clamping base 701 and the rubber-clamping adjusting seat 704 have rubber-clamping support surfaces that support the contacting rubber head 711, thereby ensuring the quality of the supported rubber head 711.

[0058] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by essentially the same means is within the protection scope of the present invention.

Claims

1. A super-large load-bearing freight elevator, comprising a shaft and a freight elevator frame (200), wherein the freight elevator frame (200) comprises a chassis (210) and a plurality of car frames (220) arranged longitudinally, wherein the car frame (220) comprises two car frame columns (221), upper car frame beams (222) connected to the upper ends of the two car frame columns (221) at its left and right ends respectively, and lower car frame beams (223) connected to the lower ends of the two car frame columns (221) at its left and right ends respectively, wherein the bottom of the chassis (210) is simultaneously fixedly connected to the top of all the lower car frame beams (223); a car wall assembly (230) is installed on the chassis (210), and a car top (240) is installed on the top of the car wall assembly (230); characterized in that: Each of the upper beams (222) of the car frame is provided with a locking mechanism (250) and two locking shafts (260) that are connected and driven to extend and retract synchronously by the locking mechanism (250). The two locking shafts (260) are respectively guided and fitted on the left and right ends of the upper beams (222). The action input ends of the two adjacent locking mechanisms (250) are connected by a locking drive shaft (25A). The locking drive shaft (25A) is driven to rotate by the locking control mechanism (270). The hoistway is provided with multiple locking mating arrays corresponding to each locking shaft (260). The locking mating array includes multiple locking mating seats (110) arranged from top to bottom. The locking mating seat (110) is provided with maintenance locking holes (111) for the locking shaft (260) to be inserted to realize the locking of the ladder.

2. The extra-large load-bearing freight elevator according to claim 1, characterized in that: The upper beam (222) of the car frame is provided with a lock ladder seat (280). The lock ladder insert shaft (260) includes a lock ladder body (261) and a lock ladder function (262) connected axially. The diameter of the lock ladder body (261) is larger than the diameter of the lock ladder function (262). The lock ladder function (262) is used to be inserted into the maintenance lock ladder hole (111). The two ends of the lock ladder seat (280) are respectively provided with a first lock ladder guide hole for guiding the lock ladder body (261) and a second lock ladder guide hole for guiding the lock ladder function (262).

3. The extra-large load-bearing freight elevator according to claim 2, characterized in that: The locking ladder linkage mechanism (250) includes a locking ladder linkage base (251), a locking ladder rotating shaft (252), and two locking ladder rack slides (253). The locking ladder linkage base (251) is installed on the upper beam of the car frame (222). The locking ladder linkage base (251) is provided with a locking ladder linkage cavity. The locking ladder rotating shaft (252) passes through the locking ladder linkage cavity and is rotatably installed on the upper beam of the car frame (222) and the locking ladder linkage base (251) at both ends. The locking ladder rotating shaft (252) is coaxially connected to the locking ladder drive shaft (25A). The locking ladder rack slide (253) is guided and fitted in the locking ladder linkage cavity. One end of the locking ladder rack slide (253) is provided with a locking ladder linkage rod (254) for connecting and driving the locking ladder insert shaft (260) to move. The other end is provided with a locking ladder rack part (2531) located in the locking ladder linkage cavity. A locking ladder linkage gear (255) driven to rotate by the locking ladder shaft (252) is provided between the locking ladder rack parts (2531) of the two locking ladder rack slides (253). The locking ladder linkage gear (255) is located in the locking ladder linkage cavity. The locking ladder linkage gear (255) is fitted and fixed on the locking ladder shaft (252) and its two ends are respectively engaged with the locking ladder rack parts (2531) of the two locking ladder rack slides (253).

4. The extra-large load-bearing freight elevator according to claim 3, characterized in that: The locking ladder control mechanism (270) includes a locking ladder power unit installed on the upper beam (222) of the car frame and a locking ladder transmission gear (271) mounted on the locking ladder transmission shaft (25A). The actuation output end of the locking ladder power unit is connected to the locking ladder transmission gear (271) for transmission.

5. The extra-large load-bearing freight elevator according to claim 4, characterized in that: The locking elevator power unit includes a locking elevator power base (272) mounted on the upper beam (222) of the car frame, a locking elevator motor module (273) mounted on the locking elevator power base (272), and a locking power gear (274) mounted on the output shaft of the locking elevator motor module (273). The locking power gear (274) meshes with the locking elevator transmission gear (271).

6. The extra-large load-bearing freight elevator according to claim 5, characterized in that: The lock ladder base (280) is provided with a lock ladder detection switch (281) for detecting whether the lock ladder insert shaft (260) is inserted into the maintenance lock ladder hole (111).

7. The extra-large load-bearing freight elevator according to claim 6, characterized in that: The ladder base (280) is provided with a ladder monitoring groove located between the first ladder guide hole and the second ladder guide hole. Both the first ladder guide hole and the second ladder guide hole are connected to the ladder monitoring groove. The ladder detection switch (281) is installed on the ladder base (280) and its monitoring end extends into the ladder monitoring groove and faces the ladder insertion shaft (260). The ladder detection switch (281) is configured to generate a ladder signal when the ladder body (261) presses against the monitoring end of the ladder detection switch (281).

8. The extra-large load-bearing freight elevator according to claim 7, characterized in that: The extra-large load-bearing freight elevator also includes an elevator control cabinet. The elevator lock motor module (273) is connected and controlled by an emergency control device. The emergency control device includes an emergency control module and an emergency communication module. The emergency control module is electrically connected to the elevator lock monitoring switch, the elevator lock motor module (273), and the emergency communication module. The emergency communication module is communicatively connected to the elevator control cabinet.

9. A super-large load-bearing freight elevator according to claim 8, characterized in that: The elevator control cabinet is electrically connected to a speed detection module for monitoring the moving speed of the freight elevator car, and the elevator locking cooperation seat (110) is equipped with an emergency stop cooperation unit (290).

10. A super-large load-bearing freight elevator according to any one of claims 3-9, characterized in that: The locking linkage rod (254) includes a linkage long nut (2541), a first linkage rod (2542), and a second linkage rod (2543). The two ends of the linkage long nut (2541) are respectively provided with a first linkage screw hole and a second linkage screw hole extending along the axial direction. The rotation direction of the thread of the first linkage screw hole is opposite to that of the thread of the second linkage screw hole. One end of the first linkage rod (2542) is fixed on the locking rack slide (253), and the other end is threaded in the first linkage screw hole. One end of the second linkage rod (2543) is fixed on the locking shaft (260), and the other end is threaded in the second linkage screw hole.

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