An extra large cargo elevator

Abstract

A super-large load freight elevator belongs to the technical field of elevators, and includes a freight elevator frame, wherein the freight elevator frame includes a plurality of car frames arranged in the longitudinal direction, wherein the car frame includes two car frame columns, a car frame upper beam connected to the upper ends of the two car frame columns at the left and right ends, and a car frame lower beam connected to the lower ends of the two car frame columns at the left and right ends; the car frame upper beam is provided with a lock elevator linkage mechanism and two lock elevator plug shafts connected and driven to be synchronously extended and retracted by the lock elevator linkage mechanism, and the two lock elevator plug shafts are respectively guided and matched to the left and right ends of the car frame upper beam, and the action input ends of the two adjacent front and rear lock elevator linkage mechanisms are connected by a lock elevator transmission shaft, and the lock elevator transmission shaft is driven to rotate by the lock elevator control mechanism. The present invention can simultaneously drive all the lock elevator plug shafts to be inserted into the corresponding maintenance lock elevator holes to complete the locking action of the freight elevator car, effectively simplify the lock elevator process, reduce the operating burden of maintenance workers, and thus improve the efficiency and safety of the overall maintenance work.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an extra-large load-carrying freight elevator. Background Art

[0002] In modern industry, logistics, warehousing and large commercial facilities, oversized freight elevators play a vital role. They are specially designed to carry cargo that is much heavier than normal and meet the vertical transportation needs of heavy cargo. This type of elevator system not only has an amazing load-bearing capacity, but the weight of the freight elevator car is also increased accordingly to ensure the stability and safety of the structure.

[0003] As the size and load of freight elevators increase, the safety maintenance of freight elevators becomes particularly important and complex. In particular, when performing structural maintenance on the freight elevator car, it is necessary to ensure that the freight elevator car will not accidentally fall during the maintenance process to protect the lives of maintenance workers. To this end, it is common practice in the prior art to set at least two elevator lock assemblies on each car frame of the freight elevator frame. These elevator lock assemblies can firmly lock the freight elevator car in the shaft during maintenance, effectively preventing it from falling in any form.

[0004] However, this setting improves the safety of maintenance work to a certain extent, but in actual operation, each ladder lock component usually requires maintenance workers to operate it separately to lock and unlock, which undoubtedly increases the complexity and time-consuming of the operation. Especially in the case of emergency maintenance or rapid locking, operating each ladder lock component separately may delay precious maintenance time and even affect maintenance efficiency and worker safety. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an extra-large load-bearing freight elevator.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A super-large load-carrying freight elevator comprises a shaft and a freight elevator frame, the freight elevator frame comprises a chassis and a plurality of car frames arranged in a longitudinal direction, the car frame comprises two car frame columns, a car frame upper beam connected to the upper ends of the two car frame columns at the left and right ends respectively, and a car frame lower beam connected to the lower ends of the two car frame columns at the left and right ends respectively, the bottom of the chassis is simultaneously fixedly connected to the tops of all the car frame lower beams; a car wall assembly is installed on the chassis, and a car roof is installed on the top of the car wall assembly; a lock ladder linkage mechanism and two lock ladder plug shafts driven to synchronously extend and retract by the lock ladder linkage mechanism are provided on the car frame upper beam, the two lock ladder plug shafts are respectively guided and matched to the left and right ends of the car frame upper beam, the action input ends of the two adjacent lock ladder linkage mechanisms are connected by a lock ladder transmission shaft, and the lock ladder transmission shaft is driven to rotate by a lock ladder control mechanism;

[0008] A plurality of ladder lock matching arrays corresponding to each ladder lock plug shaft are arranged in the hoistway, and the ladder lock matching array includes a plurality of ladder lock matching seats arranged from top to bottom, and the ladder lock matching seats are provided with maintenance ladder lock holes for inserting the ladder lock plug shaft to realize ladder lock.

[0009] In the present invention, a ladder lock seat is provided on the upper beam of the car frame, and the ladder lock plug shaft includes a ladder lock main body and a ladder lock action part connected along the axial direction, the diameter of the ladder lock main body is larger than the diameter of the ladder lock action part, and the ladder lock action part is used to be inserted into the maintenance ladder lock hole, and the two ends of the ladder lock seat are respectively provided with a first ladder lock guide hole for guiding the ladder lock main body and a second ladder lock guide hole for guiding the ladder lock action part.

[0010] In the present invention, the ladder locking linkage mechanism comprises a ladder locking linkage base, a ladder locking shaft and two ladder locking rack slides, the ladder locking linkage base is mounted on the upper beam of the car frame, a ladder locking linkage cavity is provided on the ladder locking linkage base, the ladder locking shaft passes through the ladder locking linkage cavity and the two ends are rotatably mounted on the upper beam of the car frame and the ladder locking linkage base, and the ladder locking shaft is coaxially connected with the ladder locking transmission shaft;

[0011] The ladder lock rack slide guide is fitted in the ladder lock linkage cavity, one end of the ladder lock rack slide is provided with a ladder lock linkage rod for connecting and driving the ladder lock plug shaft to move, and the other end is provided with a ladder lock rack part located in the ladder lock linkage cavity, a ladder lock linkage gear driven to rotate by the ladder lock shaft is provided between the ladder lock rack parts of the two ladder lock rack slides, the ladder lock linkage gear is located in the ladder lock linkage cavity, the ladder lock linkage gear set is fixed on the ladder lock shaft and its two ends are respectively meshed with the ladder lock rack parts of the two ladder lock rack slides.

[0012] In the present invention, the elevator lock control mechanism includes an elevator lock power device installed on the upper beam of the car frame and an elevator lock transmission gear sleeved and fixed on the elevator lock transmission shaft, and the action output end of the elevator lock power device is transmission-connected to the elevator lock transmission gear.

[0013] In the present invention, the elevator locking power device includes an elevator locking power base installed on the upper beam of the car frame, an elevator locking motor module installed on the elevator locking power base, and a locking power gear installed on the output shaft of the elevator locking motor module, and the locking power gear is meshed with the elevator locking transmission gear.

[0014] In the present invention, a ladder lock detection switch for detecting whether the ladder lock plug shaft is inserted into the ladder maintenance lock hole is provided on the ladder lock seat.

[0015] In the present invention, the ladder lock seat is provided with a ladder lock monitoring groove located between the first ladder lock guide hole and the second ladder lock guide hole, the first ladder lock guide hole and the second ladder lock guide hole are both connected to the ladder lock monitoring groove, the ladder lock detection switch is installed on the ladder lock seat and the monitoring end extends into the ladder lock monitoring groove to face the ladder lock plug shaft, and the ladder lock detection switch is configured to generate a ladder lock signal when the ladder lock body presses against the monitoring end of the ladder lock detection switch.

[0016] In the present invention, the extra-large load freight elevator also includes an elevator control cabinet, the elevator locking 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 locking monitoring switch, the elevator locking motor module and the emergency communication module, and the emergency communication module is communicatively connected to the elevator control cabinet.

[0017] In the present 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 lock matching seat is provided with an emergency stop matching unit.

[0018] In the present invention, the ladder lock linkage rod includes a linkage long nut, a first linkage rod and a second linkage rod, and 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, and the rotation direction of the screw thread of the first linkage screw hole is opposite to the rotation direction of the screw thread of the second linkage screw hole; one end of the first linkage rod is fixed on the ladder lock rack slide, and the other end is threadedly engaged in the first linkage screw hole, and one end of the second linkage rod is fixed on the ladder lock plug shaft, and the other end is threadedly engaged in the second linkage screw hole.

[0019] The beneficial effects of the present invention are as follows: through the linkage between structures such as the elevator lock control mechanism, the elevator lock transmission shaft and the elevator lock linkage mechanism, the present invention can drive all the elevator lock shafts to be inserted into the corresponding maintenance elevator lock holes to complete the locking action of the freight elevator car, effectively simplifying the elevator locking process, reducing the operating burden of maintenance workers, and at the same time ensuring the stability and safety of the freight elevator car during the maintenance process, thereby improving the efficiency and safety of the overall maintenance operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 This is a three-dimensional diagram of an extra-large cargo elevator;

[0022] Figure 2 For the three-dimensional Figure 1 ;

[0023] Figure 3 This is the left view of the freight elevator car;

[0024] Figure 4 For the three-dimensional Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the installation of the elevator lock control mechanism;

[0026] Figure 6 It is a schematic diagram of the combination of the elevator lock transmission shaft, the elevator lock linkage mechanism, and the elevator lock control mechanism;

[0027] Figure 7 It is a structural schematic diagram of the emergency stop coordination unit;

[0028] Figure 8 It is a schematic diagram of the coordination between the emergency stop coordination unit and the elevator lock plug shaft;

[0029] Fig. 9 It is a schematic diagram of the coordination between the safety clamp mechanisms;

[0030] Fig.10 It is a schematic diagram of the coordination between the elevator safety clamp and the safety clamp linkage mechanism;

[0031] Fig.11 It is a three-dimensional diagram of the counterweight device;

[0032] Fig.12 It is a three-dimensional diagram of the glue sticking device;

[0033] Fig.13 This is a schematic diagram of the installation of the glue sticking device;

[0034] Fig.14 A three-dimensional diagram of the layout structure of the machine room;

[0035] Fig.15 The figure is a schematic diagram of the winding of the wire rope;

[0036] Fig.16 This is the module connection diagram of the extra-large load freight elevator. DETAILED DESCRIPTION

[0037] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present invention, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Reference Figure 1-16 A super-large load freight elevator comprises a shaft, a plurality of car guide rails 100 and a freight elevator frame 200, wherein the plurality of car guide rails 100 are installed in the shaft, the freight elevator frame 200 comprises a chassis 210 and a plurality of car frames 220 arranged in a longitudinal direction, the car frame 220 comprises two car frame columns 221, a car frame upper beam 222 connected to the upper ends of the two car frame columns 221 at left and right ends, and a car frame lower beam 223 connected to the lower ends of the two car frame columns 221 at left and right ends, the left and right ends of the top of the car frame upper beam 222 and the left and right ends of the bottom of the car frame lower beam 223 are provided with There is a car guide shoe seat, on which a freight elevator car guide shoe adapted to the car guide rail 100 is provided; the bottom of the chassis 210 is fixedly connected to the top of all the car frame lower beams 223 at the same time; a car wall assembly 230 is installed on the chassis 210, and a car roof 240 is installed on the top of the car wall assembly 230; the chassis 210, the car wall assembly 230 and the car roof 240 are combined into a freight elevator car with a carrying space, and a car door for allowing people and goods to enter and exit the carrying space is provided on the car wall assembly 230 located at the front end of the chassis 210 or / and at the rear end of the chassis 210.

[0041] Furthermore, the upper beam 222 of the car frame is provided with a ladder lock linkage mechanism 250 and two ladder lock plug shafts 260 that are connected and driven to synchronously retract by the ladder lock linkage mechanism 250. The two ladder lock plug shafts 260 are respectively guided and matched on the left and right ends of the upper beam 222 of the car frame, and the action input ends of the two adjacent front and rear ladder lock linkage mechanisms 250 are connected by a ladder lock transmission shaft 25A. The ladder lock transmission shaft 25A is driven to rotate by the ladder lock control mechanism 270; a plurality of ladder lock matching arrays corresponding to each ladder lock plug shaft 260 are provided in the hoistway, and the ladder lock matching array includes a plurality of ladder lock matching seats 110 arranged from top to bottom, and the ladder lock matching seat 110 is provided with a maintenance ladder lock hole 111 for inserting the ladder lock plug shaft 260 to achieve ladder lock.

[0042] When locking the freight elevator, the maintenance worker uses the elevator lock control mechanism 270 to drive all the elevator lock transmission shafts 25A to rotate along the first rotation direction, driving each elevator lock linkage mechanism 250 to link the elevator lock plug shaft 260 to extend and insert into the maintenance elevator lock hole 111; when unlocking the freight elevator, the maintenance worker uses the elevator lock control mechanism 270 to drive all the elevator lock transmission shafts 25A to rotate along the second rotation direction, driving each elevator lock linkage mechanism 250 to link the elevator lock plug shaft 260 to retract and exit the maintenance elevator lock hole 111.

[0043] This embodiment can drive all the elevator lock shafts 260 to be inserted into the corresponding maintenance elevator lock holes 111 through the linkage between the elevator lock control mechanism 270, the elevator lock transmission shaft 25A and the elevator lock linkage mechanism 250 to complete the locking action of the freight elevator car, effectively simplifying the elevator locking process, reducing the operating burden of maintenance workers, and ensuring the stability and safety of the freight elevator car during the maintenance process, thereby improving the efficiency and safety of the overall maintenance operation.

[0044] In this embodiment, a ladder lock seat 280 is provided on the upper beam 222 of the car frame, and the ladder lock plug shaft 260 is guided and connected to the ladder lock seat 280. Further, the ladder lock plug shaft 260 includes a ladder lock body 261 and a ladder lock action part 262 connected in the axial direction, the diameter of the ladder lock body 261 is larger than the diameter of the ladder lock action part 262, and the ladder lock action part 262 is used to be inserted into the maintenance ladder lock hole 111, and the two ends of the ladder lock seat 280 are respectively provided with 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 action part 262.

[0045] In this embodiment, the ladder locking linkage mechanism 250 includes a ladder locking linkage base 251, a ladder locking shaft 252 and two ladder locking rack slides 253. The ladder locking linkage base 251 is installed on the car frame upper beam 222. The ladder locking linkage base 251 is provided with a ladder locking linkage cavity. The ladder locking shaft 252 passes through the ladder locking linkage cavity and is rotatably installed at both ends on the car frame upper beam 222 and the ladder locking linkage base 251. The ladder locking shaft 252 is coaxially connected with the ladder locking transmission shaft 25A.

[0046] Furthermore, the ladder lock rack slide 253 is guided and fitted in the ladder lock linkage cavity, one end of the ladder lock rack slide 253 is provided with a ladder lock linkage rod 254 for connecting and driving the ladder lock plug shaft 260 to move, and the other end is provided with a ladder lock rack portion 2531 located in the ladder lock linkage cavity, and a ladder lock linkage gear 255 driven to rotate by the ladder lock shaft 252 is arranged between the ladder lock rack portions 2531 of the two ladder lock rack slides 253, and the ladder lock linkage gear 255 is located in the ladder lock linkage cavity, the ladder lock linkage gear 255 is set and fixed on the ladder lock shaft 252 and its two ends are respectively meshed with the ladder lock rack portions 2531 of the two ladder lock rack slides 253, and the ladder lock linkage gear 255 is configured to drive the two ladder lock rack slides 253 to move toward each other when unlocking the freight elevator and to drive the two ladder lock rack slides 253 to move away from each other when locking the freight elevator.

[0047] In this embodiment, the elevator lock control mechanism 270 includes an elevator lock power device installed on the upper beam 222 of the car frame and an elevator lock transmission gear 271 set and fixed on the elevator lock transmission shaft 25A, and the action output end of the elevator lock power device is connected to the elevator lock transmission gear 271. Further, the elevator lock power device includes an elevator lock power base 272 installed on the upper beam 222 of the car frame, an elevator lock motor module 273 installed on the elevator lock power base 272, and a locking power gear 274 installed on the output shaft of the elevator lock motor module 273. The locking power gear 274 is meshed with the elevator lock transmission gear 271, and the elevator lock motor module 273 drives the locking power gear 274 to rotate. The locking power gear 274 synchronously controls the elevator lock transmission gear 271 to drive the elevator lock transmission shaft 25A to rotate synchronously, so that the elevator lock transmission shaft 25A drives the elevator lock linkage mechanism 250 and the elevator lock plug shaft 260 to move. The elevator lock motor module 273 adopts a servo motor or a combination of a servo motor and a reducer, which is specifically set according to the use requirements.

[0048] In this embodiment, the ladder lock seat 280 is provided with a ladder lock detection switch 281 for detecting whether the ladder lock shaft 260 is inserted into the maintenance ladder lock hole 111, and the ladder lock seat 280 is provided with a ladder lock monitoring groove located between the first ladder lock guide hole and the second ladder lock guide hole, and the first ladder lock guide hole and the second ladder lock guide hole are both connected to the ladder lock monitoring groove, and the ladder lock detection switch 281 is installed on the ladder lock seat 280 and the monitoring end extends into the ladder lock monitoring groove facing the ladder lock shaft 260, and 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.

[0049] In this embodiment, the oversized cargo elevator further comprises an elevator control cabinet, the elevator lock motor module 273 is connected and controlled by an emergency control device, the emergency control device comprises 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 the cargo elevator maintenance signal, the elevator control cabinet outputs the maintenance elevator 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 ladder lock plug shaft 260, so that the ladder lock plug shaft 260 can be inserted into the maintenance ladder lock hole 111 to complete the ladder lock action; when the ladder lock body 261 of the ladder lock plug shaft 260 presses against the monitoring end of the ladder lock detection switch 281, the ladder lock detection switch 281 generates a ladder lock signal and feeds it back to the emergency control module; when the emergency control module receives at least four ladder lock signals fed back by the ladder lock detection switch 281, the emergency control module feeds back a ladder lock completion signal to the elevator control cabinet, so that the maintenance worker can understand whether the freight elevator car is effectively locked. When the emergency control module receives less than four ladder lock signals, the emergency control module feeds back a ladder lock abnormality signal to the elevator control cabinet, and simultaneously activates the sound and light alarm located on the top of the freight elevator frame 200, so that the maintenance worker can understand and pay attention to the abnormality of the ladder lock, thereby ensuring safety during the maintenance process.

[0050] 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 an emergency stop cooperation unit 290 is provided on the elevator lock cooperation seat 110; when the elevator control cabinet receives the control safety clamp action signal fed back by 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 is out of control due to overspeeding and the elevator safety clamp 310 cannot stop the freight elevator car, the elevator control cabinet sends a car overspeeding and out of control signal to the emergency control module, and the emergency control module controls the elevator lock power device according to the car overspeeding and out of control signal to drive the elevator lock linkage mechanism 250 to drive the elevator lock plug shaft 260 to move and extend. As the freight elevator car moves, the extended elevator lock plug shaft 260 is blocked by the emergency stop cooperation unit 290, thereby preventing the freight elevator car from continuing to move, thereby achieving the purpose of stopping the freight elevator car.

[0051] In this embodiment, the emergency stop cooperation unit 290 includes an emergency cooperation seat 291, a stop movable block 292 and a brake reset spring 293. The emergency cooperation seat 291 is installed on the ladder lock cooperation seat 110. The bottom and top of the emergency cooperation seat 291 are provided with emergency cooperation protrusions 2911 for blocking the ladder lock plug shaft 260. The emergency cooperation protrusion 2911 is provided with two emergency side walls 2912 on the side facing away from the emergency cooperation seat 291. The emergency cooperation protrusion 2911 and the two emergency side walls 2912 are combined to form a U-shaped emergency braking groove. The emergency braking groove is away from the opening of the emergency cooperation protrusion 2911 to form an emergency vertical entrance. The emergency vertical entrance is used for the ladder lock plug shaft 260 in the extended state to vertically enter the emergency braking groove; the stop movable block 292 is in the emergency braking groove and is rotatably installed on the two emergency mounting shafts. The emergency stop movable block 292 is provided with two symmetrically arranged emergency limit arms 2921, and the two emergency limit arms 2921 are respectively movable in the emergency limit slots 2913 of the two emergency side walls 2912, and the emergency limit slots 2913 have anti-slip limit surfaces 2914; the emergency matching protrusion 2911 and the emergency side wall 2912 are commonly connected with a tension spring seat 294, one end of the brake reset tension spring 293 is connected to one end of the brake stop movable block 292, and the other end is connected to the tension spring seat 294; the emergency limit arm 2921 is kept in contact with the anti-slip limit surface 2914 under the action of the brake reset tension spring 293, so that the other end of the brake stop movable block 292 closes the emergency vertical entrance, preventing the ladder lock shaft 260 from slipping out of the emergency vertical entrance.

[0052] In this embodiment, an emergency buffer rubber block 295 located in the emergency brake groove is installed on the side of the emergency mating protrusion 2911 facing away from the emergency mating seat 291, and the emergency buffer rubber block 295 is used to reduce the impact force of the lock ladder plug shaft 260 on the emergency mating protrusion 2911. Furthermore, the two emergency side walls 2912 are connected to an emergency reinforcement plate 296 that avoids the other end of the stop movable block 292 at one end away from the emergency mating protrusion 2911, which is used to improve the structural stability of the emergency side walls 2912.

[0053] In this embodiment, the ladder lock fitting seat 110 includes a ladder lock fixing portion 112 and a ladder lock fitting portion 113 integrally formed on the ladder lock fixing portion 112. The ladder lock fixing portion 112 is installed on the car guide rail 100, and the maintenance ladder lock hole 111 is opened on the ladder lock fitting portion 113; the emergency fitting seat 291 is provided with an emergency fitting groove 2915 for the ladder lock fitting portion 113 to be embedded and installed, and the ladder lock fitting portion 113 is fixed in the emergency fitting groove 2915 by bolt connection, and the upper and lower ends of the ladder lock fitting portion 113 respectively abut against the upper groove wall and the lower groove wall of the emergency fitting groove 2915, so that the ladder lock fitting portion 113 can better support and fix the emergency fitting seat 291, thereby improving the installation stability of the emergency fitting seat 291. Further, a ladder lock avoidance hole 2916 corresponding to the maintenance ladder lock hole 111 is provided on one side wall of the emergency fitting groove 2915, and the ladder lock avoidance hole 2916 can prevent the emergency fitting seat 291 from interfering with the ladder lock plug shaft 260.

[0054] In this embodiment, the ladder lock 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, and the rotation direction of the screw thread of the first linkage screw hole is opposite to the rotation direction of the screw thread of the second linkage screw hole; one end of the first linkage rod 2542 is fixed on the ladder lock rack slide 253, and the other end is threadedly engaged in the first linkage screw hole, and one end of the second linkage rod 2543 is fixed on the ladder lock plug shaft 260, and the other end is threadedly engaged in the second linkage screw hole; the length of the ladder lock linkage rod 254 can be quickly adjusted by rotating the linkage long nut 2541, so that the ladder lock linkage rod 254 can be better linked with the ladder lock plug shaft 260.

[0055] When the freight elevator is out of control due to overspeed and the elevator safety clamp 310 cannot stop the freight elevator car, the elevator control cabinet sends a car overspeed and out of control 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 drive the elevator lock plug shaft 260 to move and extend according to the car overspeed and out of control signal. As the freight elevator car moves, the extended elevator lock plug shaft 260 presses against the other end of the stop movable block 292, so that the other end of the stop movable block 292 rotates around the emergency installation shaft as the rotation center and approaches the emergency matching protrusion 2911. At this time, the brake reset tension spring 293 gradually accumulates energy, and the elevator lock plug shaft 260 can continue to move forward. The elevator lock shaft 260 moves in the direction of the emergency matching protrusion 2911; when the elevator lock shaft 260 is separated from the other end of the stop movable block 292 as the elevator lock shaft 260 moves, the stop movable block 292 is reset under the release of the brake reset tension spring 293, and the other end of the stop movable block 292 rotates away from the emergency matching protrusion 2911 with the emergency installation axis as the rotation center, so that the emergency limit arm 2921 is reset to abut against the anti-slip limit surface 2914 to close the emergency vertical entrance; when the elevator lock shaft 260 is blocked by the emergency buffer rubber block 295 on the emergency matching protrusion 2911, the purpose of braking the freight elevator car is achieved. In addition, the use of the stop movable block 292 to limit the elevator lock shaft 260 from leaving the emergency brake groove can reduce the rebound amplitude of the freight elevator car, so that the freight elevator car can enter a static state as soon as possible.

[0056] As a preferred embodiment, each car frame 220 is provided with a set of safety clamp mechanism 300, and the safety clamp mechanism 300 includes two elevator safety clamps 310 respectively arranged on two car frame columns 221 and a safety clamp linkage mechanism arranged on the car frame lower beam 223 for linking the actions of the two elevator safety clamps 310 on the same car frame 220, and the two adjacent safety clamp linkage mechanisms are connected by a brake synchronization rod 320 to make them work synchronously.

[0057] As 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 respectively rotatably installed on the left and right ends of the lower beam 223 of the car frame. The lifting arm 350 is installed 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 a prior art, so it is not described in detail.

[0058] Furthermore, each safety clamp linkage arm 370 cooperates and connects to control the movement of an elevator safety clamp 310 installed on a car frame column 221. The two safety clamp linkage arms 370 are respectively installed on the lifting long shaft 330 and the lifting short shaft 340. One of the safety clamp linkage arms 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 a lifting linkage rod 360 to drive the lifting short shaft 340 to rotate synchronously with it. The brake synchronization rod 320 is commonly connected between the two adjacent lifting long shafts 330 to enable them to rotate synchronously.

[0059] Furthermore, the lifting linkage rod 360 includes a left support rod 361, a right support rod 362 and a long support rod nut 363, the left support rod 361 includes a left hinge seat at one end thereof and a left screw segment at the other end thereof, the left hinge seat is transmission-connected to the lifting long shaft 330; the right support rod 362 includes a right hinge seat at one end thereof and a right screw segment at the other end thereof, the right hinge seat is transmission-connected to the lifting short shaft 340; the two ends of the long support rod nut 363 are respectively provided with a first lifting screw hole and a second lifting screw hole extending along the axial direction, the screw thread rotation direction of the first lifting screw hole is opposite to the screw thread rotation direction of the second lifting screw hole, at least part of the thread of the left screw segment is adapted to the first lifting screw hole, and at least part of the thread of the right screw segment is fitted to the second lifting screw hole. The length of the lifting linkage rod 360 can be quickly adjusted by rotating the long support rod nut 363 without disconnecting the connection with other components, which simplifies the operation steps, reduces the difficulty of adjustment, improves the adjustment efficiency, and reduces the time cost; and during the adjustment process, there is no need to change the connection method between the lifting linkage rod 360 and other components, thereby ensuring the overall stability and reliability of the equipment.

[0060] As a preferred embodiment, a left rocker arm 331 is fixedly installed on the lifting long shaft 330 and rotates synchronously therewith, and one end of the left rocker arm 331 away from the lifting long shaft 330 is hinged to the left hinge seat; a right rocker arm 341 is fixedly installed on the lifting short shaft 340 and rotates synchronously therewith, and one end of the right rocker arm 341 away from the lifting short shaft 340 is hinged to the 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.

[0061] As a preferred embodiment, the safety clamp linkage arm 370 is provided with two clamp block connecting parts 371 which are symmetrically arranged front and back. 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 is actuated, the two clamp blocks of the elevator safety clamp 310 can be linked to act, thereby realizing emergency braking.

[0062] In this embodiment, the clamp block connection part 371 is provided with a safety clamp linkage oblong hole, and the clamp block of the elevator safety clamp 310 is provided with a clamp block linkage member for inserting into the safety clamp linkage oblong hole. When the clamp block connection part 371 is actuated, the clamp block linkage member can be linked to drive the clamp block of the elevator safety clamp 310 to actuate. Further, the car frame lower beam 223 comprises two car frame lower beam bodies arranged symmetrically in front and back, and the front and rear ends of the lifting long axis 330 and the lifting short axis 340 are respectively rotatably matched on the two car frame lower beam bodies, and 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, and the car frame column 221 is provided with a safety brake opening for the clamp block connection part 371 to penetrate into the car frame column groove.

[0063] In this embodiment, the safety clamp brake mechanism further includes a support rod reset seat 380, which is mounted on the lower beam 223 of the car frame. The support rod reset seat 380 is provided with a support rod reset through hole for the left support rod 361 to pass through. The left support rod 361 is sleeved with a support rod reset spring 364, and the left screw section is threaded with a support rod reset nut 365. The two ends of the support rod reset spring 364 are respectively limited by the support rod reset seat 380 and the support rod reset nut 365. After the lifting linkage rod 360 is actuated, the support rod reset spring 364 drives the lifting linkage rod 360 to reset.

[0064] In the present embodiment, the safety clamp braking mechanism further comprises a safety clamp action detection switch 390, which is communicatively connected with the elevator control cabinet. The safety clamp action detection switch 390 is installed on one side of the lower beam of the car frame by means of a safety clamp detection seat. The lifting short shaft 340 is provided with a safety clamp detection matching wheel 342 which is driven to rotate synchronously by the safety clamp detection matching wheel 342. A detection avoidance recess 3421 is provided on the outer circumferential surface of the safety clamp detection matching wheel 342. When the monitoring end of the safety clamp action detection switch 390 extends into the detection avoidance recess 3421, the safety clamp action detection switch 390 does not send out 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 matching wheel 342 rotates synchronously and presses the monitoring end of the safety clamp action detection switch 390, so that the safety clamp action detection switch 390 sends out a control safety clamp action signal to the elevator control cabinet which controls the operation of the elevator.

[0065] In this embodiment, two return rope reinforcement structures are commonly connected to the bottom of all car frame upper beams 222, and the two return rope reinforcement structures are respectively close to two car frame columns 221, and each return rope reinforcement structure includes two longitudinal top beams 224, and the longitudinal top beams 224 are fixedly connected to all car frame upper beams 222, thereby improving 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, and each of the lower return rope spaces is provided with at least six car return rope pulleys 226 respectively installed on different car frame upper beams 222, and the car return rope pulley 226 is installed on the bottom of the car frame upper beam 222, and the lower end of the wheel body of the car return rope pulley 226 partially passes over the bottom surface of the longitudinal top beam 224, so that the wire rope can be not interfered by the longitudinal top beam 224; the above structure makes most of the car return rope pulley 226 hidden in the lower return rope space, reducing the probability of the car return rope pulley 226 being damaged by external factors.

[0066] In this embodiment, there are eight car frames 220 arranged from front to back, wherein the car return rope pulley 226 is provided on the car frame upper beam 222 of the first, third, fourth, fifth, sixth and eighth car frames 220 from front to back.

[0067] As a preferred embodiment, each of the car frame upper beams 222 includes two car frame upper beam bodies spaced apart from each other in the front and rear directions, the two car frame upper beam bodies are respectively connected to the front and rear sides of the car frame column 221, an upper return rope space is formed between the two car frame upper beam bodies, and the wheel body of the car return rope pulley 226 extends into the upper return rope space, so that the two car frame upper beam bodies can protect the upper part of the car return rope pulley 226, thereby reducing the probability of the car return rope pulley 226 being damaged by external factors.

[0068] In this embodiment, a tie rod seat 2211 is provided in the middle part of the car frame column 221, and the front and rear ends of the tie rod seat 2211 are respectively provided with a front lower inclined rod 2212 with the lower end inclined forward and downward and a rear lower inclined rod 2213 with the lower end inclined backward and downward. The upper ends of the front lower inclined rod 2212 and the rear lower inclined rod 2213 are hinged on the tie rod seat 2211, and the lower ends are installed on the chassis 210 through a lower tie rod rotating shaft.

[0069] In this embodiment, two adjacent front and rear tie rod seats 2211 are connected to a longitudinal support rod 2214, which is used to constrain the distance between two adjacent front and rear car frame columns 221, thereby reducing the probability of deformation and bending of the middle part of the car frame column 221. Further, the upper front end of each tie rod seat 2211 is provided with a front upper inclined tie rod 2215, the upper end of which is inclined forward and upward, the lower end of the front upper inclined tie rod 2215 is hinged on the tie rod seat 2211, and the upper end is installed on the upper support frame 225 through an upper tie rod rotating shaft. The rear ends of at least three tie rod seats 2211 are provided with rear upper inclined tie rods 2216 whose upper ends are inclined backward and upward. The lower ends of the rear upper inclined tie rods 2216 are hinged on the tie rod seats 2211, and the upper ends are mounted on the upper support frame 225 by an upper tie rod rotating shaft. The present embodiment can effectively improve the connection strength between each car frame 220 by arranging the front lower inclined tie rods 2212, the rear lower inclined tie rods 2213, the longitudinal support rods 2214, the front upper inclined tie rods 2215 and the rear upper inclined tie rods 2216, thereby enhancing the structural stability of the freight elevator frame 200 and enabling the entire freight elevator to withstand higher loads and meet the use requirements of extra-large load freight elevators.

[0070] As a preferred embodiment, a counterweight guide rail and a counterweight device 400 are provided in the shaft. The counterweight device 400 includes three counterweight modules 401 arranged from front to back. The counterweight modules 401 are equipped with a re-entry rope pulley 402 and a counterweight guide shoe that is guided and matched on the counterweight guide rail.

[0071] As a preferred embodiment, the super-large cargo heavy-duty freight elevator also includes a machine room arrangement structure 500, which is installed in the elevator machine room above the shaft. The machine room arrangement 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, and the load-bearing structure includes a first longitudinal car beam 504, a second longitudinal car beam 505, and a third longitudinal car beam 506, which are arranged from left to right and have their bottoms connected to the tops of the first machine room base 501, the second machine room base 502 and the third machine room base 503. The first machine room base 501 is provided with a traction machine seat 5011 and a counterweight rope head assembly 5012 at the left end top, and a transverse guide rope pulley 5013 is provided at the bottom; the traction machine seat 5011 is located at the front end of the second longitudinal car beam 505 and the first longitudinal counterweight beam 506, the traction machine seat 5011 is provided with a traction main machine 5014, and the traction main machine 5014 is provided with a traction wheel 5015 driven to rotate by the traction main machine 5014, and the rotation axis of the transverse guide rope pulley 5013 and the rotation axis of the traction wheel 5015 are parallel to each other. The counterweight rope head assembly 5012 corresponds to the front end of the second longitudinal counterweight beam 507, and 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; the first longitudinal counterweight beam 506 and the second longitudinal counterweight beam 507 are each provided with four longitudinal counterweight fixed rope pulleys 5067 distributed from front to back; The end top and the rear end top of the second longitudinal counterweight beam 507 are commonly connected to a counterweight top frame 508, on which a transverse counterweight fixed rope pulley 5081 is provided, and the rotation axis of the longitudinal counterweight fixed rope pulley 5067 and the rotation axis of the transverse counterweight fixed rope pulley 5081, as well as the rotation axis of the longitudinal counterweight fixed rope pulley 5067 and the rotation axis of the transverse guide rope pulley 5013 are all perpendicular to each other, and the rotation axis of the first longitudinal car fixed rope pulley 5041 and the rotation axis of the first longitudinal car fixed rope pulley 5041 are both parallel to the rotation axis of the longitudinal counterweight fixed rope pulley 5067.

[0072] The above structure first combines and fixes the base structure and the load-bearing structure together to form a machine room layout structure 500, which effectively ensures the structural stability of the machine room layout structure 500, so that the machine room traction machine can withstand a larger load, and the machine room layout structure 500 effectively meets the operation and use requirements of the super-large load freight elevator; and the transverse guide rope pulley 5013, the traction wheel 5015, the counterweight rope head assembly 5012, the car rope head assembly 5051, the first longitudinal car fixed rope pulley 5041, the second longitudinal car fixed rope pulley 5052, the longitudinal counterweight fixed rope pulley 5067 and the transverse counterweight fixed rope pulley 5081 together form a drive layout with a traction ratio of 12:1, thereby meeting the traction requirements for the re-entry rope pulley 402 and the car return rope pulley 206.

[0073] In this embodiment, each car frame column 221 corresponds to a glue device 700 installed on the car roof 240, and the glue device 700 includes a glue base 701 installed on the car roof 240, a horizontal glue module 702, and two longitudinal glue modules 703 symmetrically arranged front and back. The horizontal glue module 702 is fixed on the glue base 701 and faces the side of the car frame column 221 toward the car wall assembly 230; the two horizontal glue modules 702 correspond to the car frame column 221 respectively. On the front and rear sides, the rubber base 701 is provided with two rubber adjustment seats 704 which 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 modules 702 and the longitudinal rubber modules 703 can effectively reduce the collision between the car frame column 221 and the car roof 240, reduce the noise and vibration during the operation of the freight elevator, and improve the riding comfort.

[0074] In this embodiment, a glue sliding groove 2401 extending from front to back is provided on the top of the car top 240, at least two glue locking blocks 2402 are provided in the glue sliding groove 2401, and longitudinal adjustment fixing bolts 2403 threadedly connected to the glue locking blocks 2402 are inserted on the glue base 701, and each glue locking block 2402 corresponds to at least one longitudinal adjustment fixing bolt 2403. After the longitudinal adjustment fixing bolt 2403 is loosened, the glue base 701 can move forward and backward on the car top 240. Further, longitudinal adjustment oblong holes corresponding to the longitudinal adjustment fixing bolts 2403 are provided on the glue base 701, and the length direction of the longitudinal adjustment oblong holes extends in the left-right direction, and the screw section of the longitudinal adjustment fixing bolt 2403 passes through the longitudinal adjustment oblong hole and is threadedly connected to the glue locking block 2402.

[0075] In this embodiment, two groups of front and rear adjustment holes for glue are provided on the glue base 701, and each group of front and rear adjustment holes for glue includes two long holes for glue front and rear adjustment arranged from top to bottom. Two glue locking bolts 7041 are inserted on the glue adjustment seat 704, and the screw section of each glue locking bolt 7041 passes through a long hole for glue front and rear adjustment and is threadedly matched with a glue locking nut 7042 for fixing it. Loosening the glue locking nut 7042 can allow the glue adjustment seat 704 to move forward and backward, thereby realizing position adjustment, so that the longitudinal glue module 703 can better cooperate with the car frame column 221.

[0076] 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 each adhesive fixing through hole corresponds to a rubber head 711 module 710 installed.

[0077] In this embodiment, the 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 is provided with a rubber head through hole extending in the axial direction, and a rubber holding groove is provided in the rubber head through hole. The head of the rubber head bolt 712 is completely matched in the rubber holding groove, wherein the screw section of the rubber head bolt 712 of the fixed rubber head 711 module 710 passes through the rubber head through hole and a rubber fixing through hole and then is threadedly matched with a rubber head nut 713 for fixing it. Furthermore, the rubber base 701 and the rubber adjustment seat 704 are both provided with a rubber support surface for supporting and contacting the rubber head 711, so as to ensure the quality of supporting the rubber head 711.

[0078] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means belongs to the protection scope of the present invention.

Claims

1. An extra-large load freight elevator, comprising a shaft and a freight elevator frame (200), the freight elevator frame (200) comprising a chassis (210) and a plurality of car frames (220) arranged in a longitudinal direction, the car frame (220) comprising two car frame columns (221), a car frame upper beam (222) connected to the upper ends of the two car frame columns (221) at left and right ends, and a car frame lower beam (223) connected to the lower ends of the two car frame columns (221) at left and right ends, the bottom of the chassis (210) being simultaneously fixedly connected to the tops of all the car frame lower beams (223); a car wall assembly (230) being mounted on the chassis (210), and a car roof (240) being mounted on the top of the car wall assembly (230); characterized in that: The upper beam (222) of the car frame is provided with a staircase locking linkage mechanism (250) and two staircase locking plug shafts (260) connected and driven by the staircase locking linkage mechanism (250) to be synchronously extended and retracted. The two staircase locking plug shafts (260) are respectively guided and matched to the left and right ends of the upper beam (222) of the car frame. The action input ends of the two adjacent staircase locking linkage mechanisms (250) are connected by a staircase locking transmission shaft (25A). The staircase locking transmission shaft (25A) is driven to rotate by the staircase locking control mechanism (270). A plurality of ladder lock matching arrays corresponding one to each ladder lock plug shaft (260) are provided in the hoistway, and the ladder lock matching array comprises a plurality of ladder lock matching seats (110) arranged from top to bottom, and the ladder lock matching seats (110) are provided with maintenance ladder lock holes (111) for inserting the ladder lock plug shaft (260) to achieve ladder lock.

2. The super-large load-carrying freight elevator according to claim 1, characterized in that: A ladder lock seat (280) is provided on the upper beam (222) of the car frame, and the ladder lock plug shaft (260) comprises a ladder lock main body (261) and a ladder lock action part (262) connected along the axial direction, the diameter of the ladder lock main body (261) is larger than the diameter of the ladder lock action part (262), and the ladder lock action part (262) is used to be inserted into the maintenance ladder lock hole (111), and the two ends of the ladder lock seat (280) are respectively provided with a first ladder lock guide hole for guiding the ladder lock main body (261) and a second ladder lock guide hole for guiding the ladder lock action part (262).

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

4. The super-large load-carrying freight elevator according to claim 3, characterized in that: The elevator lock control mechanism (270) comprises an elevator lock power device mounted on the upper beam (222) of the car frame and an elevator lock transmission gear (271) sleeved and fixed on the elevator lock transmission shaft (25A), and the action output end of the elevator lock power device is in transmission connection with the elevator lock transmission gear (271).

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

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

7. The super-large load freight elevator according to claim 6, characterized in that: The ladder lock seat (280) is provided with a ladder lock monitoring groove located between the first ladder lock guide hole and the second ladder lock guide hole, the first ladder lock guide hole and the second ladder lock guide hole are both connected to the ladder lock monitoring groove, the ladder lock detection switch (281) is installed on the ladder lock seat (280) and the monitoring end extends into the ladder lock monitoring groove and faces the ladder lock plug shaft (260), and 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).

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

9. The super-large load-carrying 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 lock matching seat (110) is provided with an emergency stop matching unit (290).

10. An extra-large load freight elevator according to any one of claims 3 to 9, characterized in that: The ladder lock linkage rod (254) comprises 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 in the axial direction; the screw thread rotation direction of the first linkage screw hole is opposite to the screw thread rotation direction of the second linkage screw hole; one end of the first linkage rod (2542) is fixed to the ladder lock rack sliding seat (253), and the other end is threadedly engaged in the first linkage screw hole; one end of the second linkage rod (2543) is fixed to the ladder lock plug shaft (260), and the other end is threadedly engaged in the second linkage screw hole.

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