Counter door fence device for elevator and elevator

Abstract

The application discloses a lift split door fence device and a lift, and relates to the technical field of lift split door fence devices, which comprises a split door assembly and a safety lock mechanism. At least one of the first split door and the second split door of the split door assembly is provided with a door limiting shaft. The limiting swing rod of the safety lock mechanism is swung and reset from the first unlocking position to the first locking position through a swing rod reset part. The lower end of the limiting swing rod is provided with a limiting rod part, and the upper end is provided with a telescopic lock tongue. The telescopic lock tongue is raised and reset from the second unlocking position to the second locking position through a lock tongue reset part. The first end of the knock rod driving assembly is rotationally arranged and provided with a stop plate, and the second end is extended and abuts against the knock iron. The knock rod driving assembly drives the stop plate to remove the stop of the limiting rod part under the abutment of the knock iron. The knock rod reset part drives the knock rod driving assembly to be reset to the stop plate to reapply the stop. The safety lock mechanism is transferred to the installation side of the split door assembly. The knock rod driving assembly can be extended and arranged, so that the cage does not need to be installed to a position close to the fence door.

Description

Technical Field

[0001] This invention belongs to the field of elevator technology, and particularly relates to a double-door fence device for elevators and an elevator. Background Technology

[0002] Construction hoists, also known as construction elevators, outdoor elevators, or passenger / freight elevators, are indispensable equipment for carrying people and goods on construction sites. They are temporary lifting machines equipped with guide platforms, cages, or other transport devices, capable of flexibly stopping at various levels of the construction site to provide vertical transportation for workers and goods.

[0003] As a crucial component of construction hoists, the gate's function is to provide a safe passage for personnel and goods. During hoist operation, the gate must remain closed to ensure the safety and enclosure of the internal space. Currently, construction hoists primarily use upward-sliding gates. The safety lock mechanism can only be installed at the top of the gate, and the cage must be relatively close to the gate for the stop weight on the cage to trigger the safety lock mechanism, thus unlocking it. Otherwise, the gate cannot open upwards. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies, the present invention provides a double-door fence device for a lift and a lift, which aims to solve the technical problem that the existing fence gate structure restricts the cage to a position close to the fence gate.

[0005] To achieve the above objectives, the first aspect of the present invention provides a double-door guardrail device for a hoist, wherein the double-door guardrail device for a hoist includes a double-door assembly and a safety lock mechanism; the double-door assembly includes a door frame and a first double-door and a second double-door rotatably mounted on the door frame, and a door limiting shaft extends from the mounting side of at least one of the first double-door and the second double-door; the safety lock mechanism is disposed on the door frame corresponding to the door limiting shaft and includes a touch bar drive assembly, a latch rocker assembly and a touch bar reset component, the latch rocker assembly includes a limiting rocker, a telescopic latch, a rocker reset component and a latch reset component, the limiting rocker is rotatably disposed and moves from a first unlocking position toward the direction away from the hoist cage via the rocker reset component. The swing arm is reset to the first locking position. The lower end of the limiting swing arm is provided with a limiting rod and the upper end is provided with a telescopic lock tongue with a locking door limiting shaft. The telescopic lock tongue is raised and lowered and reset to the second locking position from the second unlocking position through the lock tongue reset component. The first end of the bumper drive assembly is rotatably set and a stop plate is provided on the side of the limiting rod away from the cage. The second end extends towards the cage and abuts against the bumper on the cage. Under the abutment of the bumper, the bumper drive assembly drives the stop plate to rotate to remove the stop action on the limiting rod. Under the loss of the abutment of the bumper, the bumper reset component drives the bumper drive assembly to reset so that the stop plate resumes to apply the stop action on the limiting rod.

[0006] In one embodiment of the present invention, the limiting rocker arm includes a rocker arm shaft mounting part and a limiting rod part. The rocker arm shaft mounting part is provided with a rocker arm mounting hole through it laterally so as to allow the limiting rocker arm to be rotatably mounted. The reset drive end of the rocker arm reset member is mounted on the first end of the rocker arm shaft mounting part so as to drive the rocker arm shaft mounting part to reset from the first unlocking position to the first locking position. The telescopic lock tongue and the limiting rod part are provided on the upper and lower sides of the rocker arm shaft mounting part.

[0007] In one embodiment of the present invention, the rocker arm reset member is configured as a first spring member, and a spring hook portion is provided at the first end of the rocker arm shaft mounting part extending along a portion of the periphery of the rocker arm mounting hole. The spring hook portion is used for the reset drive end of the first spring member to hook.

[0008] In one embodiment of the present invention, the second end of the swing arm shaft-mounted part extends out along a portion of the periphery of the swing arm mounting hole and is provided with a shaft-mounted limiting part. The safety lock mechanism also includes a stop block, which abuts against the shaft-mounted limiting part when the swing arm shaft-mounted part is reset to the first locking position.

[0009] In one embodiment of the present invention, the latch rocker assembly further includes a guide rod, the lower end of which is connected to the side of the limiting rocker rod opposite to the limiting rod portion. The telescopic latch is mounted on the guide rod in a vertically detachable manner, and a rocker rod reset component is provided between the limiting rocker rod and the telescopic latch.

[0010] In one embodiment of the present invention, the guide rod includes a rod body and a rod head disposed at the upper end of the rod body. The inner cavity of the telescopic latch is provided from bottom to top with a driving cavity, a through-rod cavity and a limiting cavity. The rod head can be vertically accommodated in the limiting cavity and can abut against the bottom wall of the limiting cavity. The rod body passes through the through-rod cavity and the driving cavity from the limiting cavity, so that the lower end is connected to the side of the limiting swing rod away from the limiting rod portion. The latch reset member is sleeved on the rod body and placed between the limiting swing rod and the top wall of the driving cavity.

[0011] In one embodiment of the present invention, the telescopic latch includes a latch body and a threaded connecting sleeve. The inner cavity of the threaded connecting sleeve extends vertically and is configured to include a driving cavity, a through-rod cavity, and a limiting cavity. The outer wall of the threaded connecting sleeve is provided with a first external thread section. The lower end of the latch body is sleeved on the threaded connecting sleeve and the inner cavity is provided with a first internal thread section that is threadedly connected to the first external thread section.

[0012] In one embodiment of the present invention, the lower end of the rod body is detachably threadedly connected to the limiting swing rod.

[0013] In one embodiment of the present invention, the upper end of the telescopic latch is formed with a guide inclined surface, which is inclined upward in the direction from the cage toward the door frame.

[0014] In one embodiment of the present invention, the safety lock mechanism further includes a stop shaft located on the upper side of the stop plate, the stop shaft abutting against the stop plate when the stop plate returns to applying a stopping action to the limiting rod portion.

[0015] In one embodiment of the present invention, the safety lock mechanism further includes a first side plate, which is detachably mounted on the door frame. The first side plate is provided with a swing arm mounting shaft and a stop arm mounting shaft spaced apart. The limit swing arm and the stop arm drive assembly are respectively fitted onto the swing arm mounting shaft and the stop arm mounting shaft in a corresponding manner. The end of the swing arm mounting shaft and the stop arm mounting shaft away from the first side plate is provided with a fastening hole for fasteners to be fastened.

[0016] In one embodiment of the present invention, the swing arm mounting shaft includes a first shaft segment and a second shaft segment arranged sequentially from the first side mounting plate. The shaft diameter of the first shaft segment is larger than that of the second shaft segment, so that a stepped surface opposite to the first side mounting plate is formed between the first shaft segment and the second shaft segment. A connecting fastening hole is provided at the end of the second shaft segment away from the first shaft segment. The swing arm reset member and the limiting swing arm are both sleeved on the second shaft segment, and the swing arm reset member is located between the stepped surface and the limiting swing arm. The reset drive end and the fixed end of the swing arm reset member are respectively installed on the limiting swing arm and the first shaft segment. The first shaft segment has an installation plane on the side opposite to the cage for the fixed end of the swing arm reset member to hook onto.

[0017] In one embodiment of the present invention, the first end of the collision rod drive assembly is provided with a collision rod sleeve fitted on the collision rod mounting shaft, and the collision rod reset member is provided as a second spring member fitted on the collision rod sleeve. The two ends of the second spring member are respectively installed on the first side plate and the collision rod drive assembly.

[0018] In one embodiment of the present invention, the safety lock mechanism further includes a second side plate. The second side plate is spaced apart from the first side plate and has two connecting through holes. The two connecting through holes are respectively provided with connecting fastening holes for the swing arm mounting shaft and the bumper mounting shaft. Fasteners pass through the door frame and the connecting through holes in sequence and are fastened to the connecting fastening holes, so that the limit swing arm and bumper driving assembly are installed between the first side plate and the second side plate. The first side plate is provided with a stop block and a stop shaft.

[0019] In one embodiment of the present invention, the collision rod drive assembly includes a collision rod body and a roller body. The collision rod body includes a rotating mounting portion and a roller mounting portion. The first end of the rotating mounting portion is rotatably disposed and provided with a stop plate. The second end of the rotating mounting portion extends toward the cage. The roller mounting portion is disposed at the second end of the rotating mounting portion and extends in a direction perpendicular to the extension of the rotating mounting portion. The roller body is rotatably mounted at the end of the roller mounting portion away from the rotating mounting portion and is used to abut against the collision iron on the cage.

[0020] To achieve the above objectives, a second aspect of the present invention provides an elevator, wherein the elevator includes a double-door railing device for an elevator as described above.

[0021] Through the above technical solution, the lifting platform double-door railing device provided by the present invention has the following beneficial effects: When the hoist uses the aforementioned double-door railing device, since it includes a double-door assembly and a safety lock mechanism, during the process of the cage moving to the corresponding double-door railing device, as the contact iron on the cage abuts against the contact rod drive assembly, the contact rod drive assembly rotates and drives the stop plate to rotate, so that the stop plate removes its stopping effect on the limit rod. At this time, when the double-door assembly is opened, the door limit shaft on the double-door assembly rotates to abut against the telescopic latch in the second locking position, and pushes the limit swing rod from the first locking position toward the direction closer to the cage to the first unlocking position, so that the door limit shaft can be smoothly unlocked in the first unlocking position. At the same time, since the telescopic latch loses the abutment of the door limit shaft in the first unlocking position, the swing rod reset component can drive the limit swing rod to swing back from the first unlocking position toward the direction away from the cage to the first locking position. When the double-door assembly is closed, the door limit shaft on the double-door assembly rotates to abut against the telescopic latch in the second locking position. The retractable latch engages and pushes the telescopic latch down to the second unlocking position, allowing the door limit shaft to smoothly enter the side of the telescopic latch away from the cage. After the telescopic latch loses the engagement of the door limit shaft, the latch reset component can drive the telescopic latch to rise from the second unlocking position and reset to the second locking position. Then, when the cage leaves the corresponding double-door fence device, the catch bar drive assembly gradually loses the engagement of the catch bar. The catch bar reset component can drive the catch bar drive assembly to reset and rotate, so that the stop plate returns to apply a stopping effect on the limit bar, thereby locking the door limit shaft. This ensures that the double-door assembly cannot be opened unless the cage has moved to the corresponding double-door fence device. In this invention, by setting the double-door assembly, the safety lock mechanism is transferred to the installation side of the double-door assembly. In addition, the catch bar drive assembly for engaging with the catch bar on the cage extends towards the cage, so that the cage does not need to be installed in a position close to the fence door, which is beneficial to the production and disassembly of the cage.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. Those skilled in the art can obtain other drawings based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the double-door fence device in the closed state according to an embodiment of the present invention; Figure 2 yes Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the double-door fence device in the opening process according to an embodiment of the present invention; Figure 4 yes Figure 3 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the structure of a door frame according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first double door according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the safety lock mechanism in the first locking position according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the safety lock mechanism in the first locking position according to an embodiment of the present invention from another perspective. Figure 9 This is a schematic diagram of the security lock mechanism in the unlocking process according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the assembly structure of the limiting rocker arm, the telescopic locking tongue, and the locking tongue reset component according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the disassembled structure of the limiting rocker arm, the telescopic lock tongue, and the lock tongue reset component according to an embodiment of the present invention; Figure 12 This is a cross-sectional structural schematic diagram of the limiting rocker arm, telescopic latch, and latch reset member according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of the first side plate according to an embodiment of the present invention. Figure 14 This is a schematic diagram of the installation structure of the contact rod reset member according to an embodiment of the present invention; Figure 15 This is a schematic diagram of the structure of the second side plate according to an embodiment of the present invention; Figure 16 This is a partial structural schematic diagram of a collision lever drive assembly according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures: 100. Door frame; 101. Second baffle; 102. Third baffle; 103. First mounting base; 104. Second mounting base; 105. Third mounting base; 106. First groove plate; 107. Second groove plate; 108. Mounting notch; 200. First double door; 201. Door limit shaft; 202. First baffle; 203. First mounting pivot; 204. Second mounting pivot; 300. Second double door; 400. Bumper rod drive assembly; 420. Rotating mounting part; 421. Bumper rod sleeve; 422. Stop plate; 430. Roller mounting part; 431. Roller body; 500. Limiting swing rod; 510. Swing rod shaft mounting part; 511. Shaft-mounted limiting part; 512. Spring hook mounting part; 513. Boss connection 520. Telescopic latch; 521. Drive cavity; 522. Through rod cavity; 523. Limiting cavity; 524. Latch body; 525. Threaded connecting sleeve; 526. Guide inclined surface; 530. Latch reset component; 540. Limiting rod part; 550. Rocker rod reset component; 560. Guide rod; 561. Rod body; 562. Rod head; 600. Collision rod reset component; 700. First side mounting plate; 710. Rocker rod mounting shaft; 711. First shaft section; 712. Second shaft section; 713. Step surface; 714. Mounting plane; 720. Collision rod mounting shaft; 730. Connecting fastening hole; 740. Spring stop block; 800. Second side mounting plate; 804. Stop block; 805. Stop shaft; 806. Connecting through hole. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] The following description, with reference to the accompanying drawings, describes the lifting platform with double-door railing device and the lifting platform of the present invention.

[0027] like Figures 1 to 4 As shown, the present invention provides a double-door barrier device for an elevator, wherein the double-door barrier device for an elevator includes: A double door assembly includes a door frame 100 and a first double door 200 and a second double door 300 rotatably mounted on the door frame 100, wherein at least one of the first double door 200 and the second double door 300 has a door limiting shaft 201 extending out from its mounting side. The safety lock mechanism, corresponding to the door limit shaft 201, is mounted on the door frame 100 and includes a touch bar drive assembly 400, a latch rocker assembly, and a touch bar reset component 600. The latch rocker assembly includes a limit rocker 500, a telescopic latch 520, a rocker reset component 550, and a latch reset component 530. The limit rocker 500 is rotatable and can be reset from the first unlocked position to the first locked position by the rocker reset component 550 in the direction away from the cage. The lower end of the limit rocker 500 is provided with a limit rod portion 540, and the upper end is provided with a telescopic latch 520 that locks the door limit shaft 201. The telescopic latch 520 is rotatable and can be raised and lowered. The overlock tongue reset member 530 can rise and reset from the second unlock position to the second locking position. The first end of the catch rod drive assembly 400 is rotatably set and a stop plate 422 is provided on the side of the limit rod 540 away from the cage. The second end extends towards the cage and abuts against the catch iron on the cage. Under the abutment action of the catch iron, the catch rod drive assembly 400 drives the stop plate 422 to rotate, so as to remove the stopping action on the limit rod 540. The catch rod reset member 600 drives the catch rod drive assembly 400 to reset under the loss of the abutment action of the catch iron, so that the stop plate 422 returns to applying the stopping action on the limit rod 540.

[0028] When the elevator uses the aforementioned double-door barrier device, since it includes a double-door assembly and a safety lock mechanism, during the process of the cage moving to the corresponding double-door barrier device, as the contact iron on the cage abuts against the contact rod drive assembly 400, the contact rod drive assembly 400 rotates and drives the stop plate 422 to rotate, so that the stop plate 422 removes its stopping effect on the limit rod 540. At this time, when the double-door assembly is opened, the door limit shaft 201 on the double-door assembly rotates to abut against the telescopic lock tongue 520 which is in the second locking position. The limit lever 500 is pushed from the first locked position to the first unlocked position, moving towards the direction closer to the cage. This allows the door limit shaft 201 to unlock smoothly in the first unlocked position. Simultaneously, since the telescopic bolt 520 loses contact with the door limit shaft 201 in the first unlocked position, the lever reset member 550 can drive the limit lever 500 to swing back from the first unlocked position to the first locked position, moving away from the cage. When closing the double door assembly, the door limit shaft 201 on the double door assembly rotates to the position where it is in the second locked position. The locking tongue 520 abuts and pushes the telescopic locking tongue 520 down to the second unlocked position, so that the door limit shaft 201 can smoothly enter the side of the telescopic locking tongue 520 away from the cage. After the telescopic locking tongue 520 loses the abutment of the door limit shaft 201, the locking tongue reset member 530 can drive the telescopic locking tongue 520 to rise from the second unlocked position to reset to the second locked position. Then, when the cage leaves the corresponding double-door fence device, the strike bar drive assembly 400 gradually loses the abutment of the strike bar, and the strike bar reset member 600 can drive the strike bar drive assembly 400 to reset. The position is rotated so that the stop plate 422 returns to the position and applies a stop to the limit rod 540, thereby locking the door limit shaft 201. This ensures that the double door assembly cannot be opened unless the cage is moved to the corresponding double door fence device. In this invention, by setting the double door assembly, the safety lock mechanism is transferred to the installation side of the double door assembly. In addition, the bumper drive assembly 400 for abutting against the bumper on the cage extends toward the cage, so that the cage does not need to be installed in a position close to the fence door, which is beneficial to the production and disassembly of the cage.

[0029] It should be noted that when the limit lever 500 is in the first locked position, both the telescopic latch 520 and the limit rod 540 on the limit lever 500 can remain vertical; when the limit lever 500 is in the first unlocked position, the limit lever 500 rotates until the telescopic latch 520 and the limit rod 540 are in an inclined state, with the telescopic latch 520 located on the side closer to the cage and the limit rod 540 located on the side farther away from the cage, so as to unlock the door limit shaft 201. When the double door assembly is closed, the door limit shaft 201 is on the side of the telescopic bolt 520 away from the cage, and the telescopic bolt 520 can be held in the second locking position to lock the door limit shaft 201; during the closing process of the double door assembly, the telescopic bolt 520 can be lowered from the second locking position to the second unlocking position under the abutment of the door limit shaft 201, so that the door limit shaft 201 can enter the side of the telescopic bolt 520 away from the cage.

[0030] Specifically, see Figures 1 to 6 In the lifting platform's double-door railing device, the safety lock mechanism is preferably one. The door limit shaft 201 can be mounted on the first double-door 200, and the number is not limited. The safety lock mechanism can be installed corresponding to one of the door limit shafts 201 located near the upper end of the respective double-door. Furthermore, a first baffle 202 can extend from the opening side of the first double-door 200 away from the installation side. The first baffle 202 is located on the side of the first double-door 200 away from the cage. When the two double doors 300 are closed, the first baffle 202 can prevent the second double door 300 from rotating open. The door frame 100 is also provided with a second baffle 101 and a third baffle 102. The second baffle 101 and the third baffle 102 are respectively set in a one-to-one correspondence with the first double door 200 and the second double door 300, and are located on the side of the corresponding double door facing the cage, so as to restrict the corresponding double door from continuing to rotate toward the cage when the first double door 200 and the second double door 300 are closed.

[0031] Of course, the present invention is not limited to this. Door limit shafts 201 can be provided on the mounting side of the first double door 200 and the second double door 300. Then each double door fence device can be provided with two safety lock mechanisms, and two bumpers can be provided on the cage. The two safety lock mechanisms are respectively set to correspond one-to-one with the door limit shafts 201 on the first double door 200 and the second double door 300. The two bumpers can be respectively set to correspond one-to-one with the bumper drive components 400 of the two safety lock mechanisms.

[0032] More specifically, such as Figure 5 and Figure 6As shown, both the first double door 200 and the second double door 300 have door handles on the side facing the cage. The upper and lower ends of both doors, near the mounting side, are provided with a first mounting shaft 203 and a second mounting shaft 204, allowing the doors to be rotatably opened and closed on the door frame 100. The door frame 100 has a detachable first mounting base 103 with pivot holes through which the first mounting shaft 203 and / or the second mounting shaft 204 can rotatably pass. Preferably, the first mounting base 103 corresponds to the upper first mounting shaft 203. A second mounting base 104 is welded to the door frame 100, allowing the lower second mounting shaft 204 to be rotatably mounted. Furthermore, the door frame 100 has a third mounting base 105 above the double door assembly, which allows a limit switch to be installed.

[0033] See Figures 1 to 4 ,as well as Figures 7 to 9 In one embodiment of the present invention, the limiting rocker arm 500 includes a rocker arm shaft mounting portion 510 and a limiting rod portion 540. The rocker arm shaft mounting portion 510 is provided with a rocker arm mounting hole through which the limiting rocker arm 500 is rotatably mounted. The reset drive end of the rocker arm reset member 550 is mounted on the first end of the rocker arm shaft mounting portion 510, and the fixed end can be fixedly mounted so that the rocker arm shaft mounting portion 510 can be driven to reset from the first unlocked position to the first locked position. The telescopic lock tongue 520 and the limiting rod portion 540 are respectively disposed on the upper and lower sides of the rocker arm shaft mounting portion 510. On the one hand, the limiting rocker arm 500 is rotatably installed through the rocker arm mounting hole, which only requires a rocker arm mounting shaft 710 for the rocker arm shaft mounting part 510 to be rotatably mounted. Compared with the use of a solid shaft for rotatable installation, which requires shaft holes for rotatable installation at both ends of the solid shaft, it is obviously easier to ensure manufacturing precision. On the other hand, the structural design of the limiting rocker arm 500 in this invention is also conducive to the installation of the rocker arm reset part 550.

[0034] See Figures 7 to 11In one embodiment of the present invention, the rocker arm reset member 550 can be configured as a first spring member, specifically a torsion spring. A spring hook portion 512 extends from the first end of the rocker arm mounting portion 510 along a portion of the periphery of the rocker arm mounting hole. The spring hook portion 512 can be hooked by the reset drive end of the first spring member. That is, by adding the spring hook portion 512, it is convenient to install the reset drive end of the first spring member on the rocker arm mounting portion 510. Specifically, when the limiting rocker arm 500 is in the first locked position, the side of the spring hook portion 512 that allows the reset drive end of the first spring member to hook is located on the upper part of the rocker arm mounting portion 510 and is configured to face the cage. This allows the first spring member to drive the limiting rocker arm 500 to rotate in the opposite direction to the first unlocked position when the limiting rocker arm 500 rotates from the first locked position toward the direction closer to the cage. The reset drive end of the first spring member undergoes torsional deformation and accumulates elastic potential energy, so that the first spring member can subsequently drive the limiting rocker arm 500 to rotate in the opposite direction and reset to the first locked position. Of course, the present invention is not limited to this, and the rocker arm reset component 550 can also be made of other suitable elastic components.

[0035] See Figures 7 to 11 ,as well as Figure 15 In one embodiment of the present invention, a shaft-mounted limiting portion 511 extends from the second end of the rocker arm shaft mounting portion 510 along a portion of the periphery of the rocker arm mounting hole. The safety lock mechanism further includes a stop block 804, which abuts against the shaft-mounted limiting portion 511 when the rocker arm shaft mounting portion 510 is reset to the first locking position. That is, by adding the shaft-mounted limiting portion 511 and the stop block 804, the rotation range of the rocker arm shaft mounting portion 510 can be accurately limited. Specifically, the shaft-mounted limiting part 511 is located above the swing arm shaft-mounted part 510, and the stop block 804 is located on the side of the shaft-mounted limiting part 511 away from the cage. During the rotation of the limiting swing arm 500 from the first locked position to the first unlocked position, the shaft-mounted limiting part 511 rotates away from the stop block 804. During the return rotation of the limiting swing arm 500 to the first locked position, the shaft-mounted limiting part 511 rotates towards the stop block 804 until it abuts. Furthermore, the stop block 804 can be provided on the second side plate 800.

[0036] like Figures 7 to 10 As shown, in one embodiment of the present invention, the latch rocker arm assembly further includes a guide rod 560. The lower end of the guide rod 560 is connected to the side of the limiting rocker arm 500 opposite to the limiting rod portion 540. The telescopic latch 520 is vertically and flexibly mounted on the guide rod 560, and a rocker arm reset member 550 is provided between the limiting rocker arm 500 and the telescopic latch 520. That is, by adding the guide rod 560, the vertical movement of the telescopic latch 520 can be guided to ensure the reliability and stability of the vertical movement.

[0037] See Figures 10 to 12In one embodiment of the present invention, the guide rod 560 includes a rod body 561 and a rod head 562 disposed at the upper end of the rod body 561. The inner cavity of the telescopic latch 520 is provided from bottom to top with a driving cavity 521, a through-rod cavity 522 and a limiting cavity 523. The rod head 562 is vertically and vertically accommodated in the limiting cavity 523 and can abut against the bottom wall of the limiting cavity 523. The rod body 561 passes through the through-rod cavity 522 and the driving cavity 521 from the limiting cavity 523, so that the lower end is connected to the side of the limiting swing rod 500 away from the limiting rod portion 540. The latch reset member 530 is sleeved on the rod body 561 and placed between the limiting swing rod 500 and the top wall of the driving cavity 521. By adding the rod head 562 of the guide rod 560 and the limiting cavity 523 of the telescopic latch 520, the excessive upward displacement of the telescopic latch 520 can be prevented from detaching from the guide rod 560. Furthermore, the addition of the drive cavity 521 allows for the separate arrangement of the latch reset member 530 and the rod head 562, avoiding interference between them. Specifically, the central axes of the drive cavity 521, the through-rod cavity 522, and the limiting cavity 523 can be collinear, with the through-rod cavity 522 having the smallest radial dimension, allowing the drive cavity 521 to form a top wall and the limiting cavity 523 to form a bottom wall. Simultaneously, the latch reset member 530 can be a third spring, specifically a compression spring. However, the invention is not limited to this; the latch reset member 530 can also be other suitable elastic components.

[0038] In one embodiment of the present invention, the telescopic latch 520 includes a latch body 524 and a threaded connecting sleeve 525. The inner cavity of the threaded connecting sleeve 525 extends vertically and is configured to include a driving cavity 521, a through-rod cavity 522, and a limiting cavity 523. The outer wall of the threaded connecting sleeve 525 is provided with a first external thread section. The lower end of the latch body 524 is sleeved on the threaded connecting sleeve 525, and its inner cavity is provided with a first internal thread section that is threadedly connected to the first external thread section. By separating the telescopic latch 520 into a latch body 524 and a threaded connecting sleeve 525, it is convenient to install the telescopic latch 520 on the guide rod 560.

[0039] Furthermore, when installing the guide rod 560 onto the telescopic latch 520, the lower end of the rod body 561 of the guide rod 560 can be aligned with the limiting cavity 523 of the threaded connecting sleeve 525, and then pushed into the limiting cavity 523, the through rod cavity 522, and the driving cavity 521 in sequence until the rod head 562 of the guide rod 560 abuts against the bottom wall of the limiting cavity 523. Then, the latch body 524 is fitted onto the threaded connecting sleeve 525 and tightened to complete the assembly. Further, the threaded connecting sleeve 525 includes a seat portion and an inner sleeve portion arranged sequentially from bottom to top. The central axes of the seat portion and the inner sleeve portion are collinear, and the outer diameter of the seat portion is larger than the outer diameter of the inner sleeve portion and equal to the outer diameter of the latch body 524. The inner sleeve portion has a first external thread section, and the lower part of the inner cavity of the latch body 524 has a first internal thread section. Of course, the present invention is not limited to this; it is also possible for the telescopic locking tongue 520 and the guide rod 560 to be non-removable.

[0040] In one embodiment of the present invention, the lower end of the rod body 561 is detachably threaded to the limiting swing rod 500, which facilitates disassembly and replacement. Specifically, the swing rod shaft mounting part 510 of the limiting swing rod 500 has a boss connecting part 513 on the side opposite to the limiting rod part 540. The boss connecting part 513 has an internal threaded hole. The lower end of the rod body 561 has a second external threaded section. The rod body 561 passes through the internal threaded hole and is threadedly connected to the internal threaded hole through the second external threaded section. The locking tongue reset member 530 is located between the top wall of the driving cavity 521 and the upper end of the boss connecting part 513.

[0041] In one embodiment of the present invention, a guide inclined surface 526 is formed at the upper end of the telescopic latch 520. Specifically, the guide inclined surface 526 may be formed at the upper end of the latch body 524. The guide inclined surface 526 is inclined upward in the direction from the cage toward the door frame 100. By adding the guide inclined surface 526, when the double door assembly is closed, on the one hand, the door limiting shaft 201 can abut against the guide inclined surface 526 to compress the telescopic latch 520; on the other hand, it is convenient to smoothly guide the door limiting shaft 201 to the side of the telescopic latch 520 away from the cage.

[0042] See Figures 7 to 9 ,as well as Figure 15 and Figure 16In one embodiment of the present invention, the safety lock mechanism further includes a stop shaft 805 located on the upper side of the stop plate 422. The stop shaft 805 abuts against the stop plate 422 when the stop plate 422 returns to applying a stopping action to the limiting rod portion 540. By adding the stop shaft 805, the stop plate 422 can abut against the stop shaft 805 and stop rotating when it returns to applying a stopping action to the limiting rod portion 540, thereby ensuring the accuracy of the reset of the trigger rod drive assembly 400. Furthermore, when the stop plate 422 returns to its stopping action on the limiting rod portion 540, the stop plate 422 can remain in a horizontal state, the stop shaft 805 abuts against the upper side of the stop plate 422, and the stop plate 422 can abut against the limiting rod portion 540 to balance the effect of the swing rod reset member 550 on the swing rod shaft mounting portion 510, and to keep the telescopic locking tongues 520 and the limiting rod portion 540 on the upper and lower sides of the swing shaft mounting portion in a vertical state. In addition, the stop shaft 805 can be provided on the second side mounting plate 800.

[0043] See Figures 7 to 9 ,as well as Figure 13 In one embodiment of the present invention, the safety lock mechanism further includes a first side mounting plate 700, which is detachably mounted on the door frame 100. The first side mounting plate 700 has a swing arm mounting shaft 710 and a stop arm mounting shaft 720 spaced apart. A limiting swing arm 500 and a stop arm driving assembly 400 are respectively fitted onto the swing arm mounting shaft 710 and the stop arm mounting shaft 720. Both the swing arm mounting shaft 710 and the stop arm mounting shaft 720 have a fastening hole 730 at their ends away from the first side mounting plate 700 for fasteners. By assembling the swing arm mounting shaft 710 and the stop arm mounting shaft 720 on the first side mounting plate 700, and detachably mounting the first side mounting plate 700 on the door frame 100, the safety lock mechanism can be easily manufactured, disassembled, and replaced. Meanwhile, the rocker arm mounting shaft 710 and the stop rod mounting shaft 720 are provided with connecting fastening holes 730, which allows the rocker arm 500 and the stop rod drive assembly 400 to be fitted onto the corresponding mounting shafts first, and then the first side mounting plate 700 to be installed on the door frame 100. Then, fasteners are passed through the door frame 100 and inserted into the connecting fastening holes 730, so that the ends of the rocker arm mounting shaft 710 and the stop rod mounting shaft 720 away from the first side mounting plate 700 can be detachably connected to the door frame 100. Of course, the invention is not limited to this; the rocker arm mounting shaft 710 and the stop rod mounting shaft 720 can also be directly mounted on the door frame 100.

[0044] Specifically, please see again Figures 1 to 5The door frame 100 has a first groove plate 106 and a second groove plate 107 arranged outwards on the mounting side of the first double door 200, with the two plates spaced apart. The first groove plate 106 has a mounting notch 108 for the door limiting shaft 201 to rotate. When the first double door 200 is closed, the end of the door limiting shaft 201 away from the first double door 200 extends through the mounting notch 108 between the first groove plate 106 and the second groove plate 107. The first side mounting plate 700 can be disposed on one of the first groove plate 106 and the second groove plate 107, preferably on the second groove plate 107. The ends of the swing arm mounting shaft 710 and the bumper mounting shaft 720 away from the first side mounting plate 700 can extend to the other of the first groove plate 106 and the second groove plate 107 for connection. Furthermore, the connecting fastening hole 730 can be a threaded hole or a riveting hole, and the fastener can be a threaded fastener or a riveting fastener.

[0045] Please see again Figures 7 to 9 ,as well as Figure 13 In one embodiment of the present invention, the rocker arm mounting shaft 710 includes a first shaft segment 711 and a second shaft segment 712 sequentially arranged from the first side mounting plate 700. The central axes of the first shaft segment 711 and the second shaft segment 712 are collinear. The shaft diameter of the first shaft segment 711 is larger than the shaft diameter of the second shaft segment 712, so that a stepped surface 713 is formed between the first shaft segment 711 and the second shaft segment 712, facing away from the first side mounting plate 700. The second shaft segment 712 is away from the first shaft segment 711. One end of section 1 is provided with a connecting fastening hole 730. Both the swing arm reset component 550 and the limiting swing arm 500 are sleeved on the second shaft section 712, and the swing arm reset component 550 is located between the stepped surface 713 and the limiting swing arm 500. The reset drive end and the fixed end of the swing arm reset component 550 are respectively installed on the limiting swing arm 500 and the first shaft section 711. The first shaft section 711 has an installation plane 714 on the side away from the cage for the fixed end of the swing arm reset component 550 to hook onto. By setting the swing arm mounting shaft 710 as two sections with different shaft diameters, on the one hand, the limiting swing arm 500 can be set to the side away from the first side plate 700, and the rotating mounting part 420 of the collision rod drive assembly 400 can be set to the side closer to the first side plate 700. On the other hand, it can also facilitate the setting of the installation plane 714 for hooking while forming an end stop for the swing arm reset component 550.

[0046] See Figures 7 to 9 ,as well as Figure 13 and Figure 16In one embodiment of the present invention, the first end of the contact rod drive assembly 400 is provided with a contact rod sleeve 421 fitted onto the contact rod mounting shaft 720, and the contact rod reset member 600 is configured as a second spring member fitted onto the contact rod sleeve 421. The two ends of the second spring member are respectively and correspondingly installed on the first side mounting plate 700 and the contact rod drive assembly 400. That is, by adding the contact rod sleeve 421, on the one hand, the contact rod drive assembly 400 can be rotatably installed on the first side mounting plate 700, and on the other hand, it can also be fitted onto the second spring member to ensure the reliability of the installation of the second spring member. Specifically, the contact rod sleeve 421 is located at the end of the rotating mounting portion 420 of the contact rod drive assembly 400 away from the roller mounting portion 430, and both ends of the contact rod sleeve 421 extend out of the rotating mounting portion 420. The two ends of the contact rod sleeve 421 are respectively endoscopically limited by the first side mounting plate 700 and the second side mounting plate 800. The second spring is sleeved on the portion of the contact rod sleeve 421 located between the rotating mounting portion 420 and the first side mounting plate 700, and the two ends of the second spring are respectively mounted on the first side mounting plate 700 and the rotating mounting portion 420. Specifically, the contact rod reset member 600 can also be other suitable elastic components.

[0047] See Figures 7 to 9 ,as well as Figure 13 and Figure 14 In one embodiment of the present invention, the first side plate 700 is further provided with a spring stop 740 on the side of the bumper rod mounting shaft 720 away from the cage. One end of the second spring member is hooked onto the spring stop 740, and the other end of the second spring member is hooked onto the bumper rod drive assembly 400. The addition of the spring stop 740 facilitates the installation of the second spring member on the first side plate 700. Specifically, the second spring member includes, but is not limited to, a torsion spring, and the rotating mounting portion 420 of the bumper rod drive assembly 400 is provided with a hook hole for the other end of the second spring member to pass through.

[0048] See Figures 7 to 9 ,as well as Figure 13 and Figure 15In one embodiment of the present invention, the safety lock mechanism further includes a second side mounting plate 800. The second side mounting plate 800 is spaced apart from the first side mounting plate 700 and has two connecting through holes 806. The two connecting through holes 806 are respectively provided with connecting fastening holes 730 of the swing arm mounting shaft 710 and the stop rod mounting shaft 720. Fasteners pass through the door frame 100 and the connecting through holes 806 in sequence and are fastened to the connecting fastening holes 730, so that the limiting swing arm 500 and the stop rod driving assembly 400 are installed between the first side mounting plate 700 and the second side mounting plate 800. The second side mounting plate 800 is provided with a stop block 804 and a stop shaft 805. By adding the second side mounting plate 800, the aforementioned stop block 804 and stop shaft 805 can be integrated into one unit, so as to facilitate the processing and manufacturing. Specifically, when the first side mounting plate 700 is disposed on one of the first groove plate 106 and the second groove plate 107, the second side mounting plate 800 can be disposed on the other of the first groove plate 106 and the second groove plate 107. Of course, the present invention is not limited to this, and the stop block 804 and the stop shaft 805 can also be directly disposed on the door frame 100.

[0049] like Figures 7 to 9 ,as well as Figure 16 As shown, in one embodiment of the present invention, the catch rod drive assembly 400 includes a catch rod body and a roller body 431. The catch rod body includes a rotatable mounting portion 420 and a roller mounting portion 430. The first end of the rotatable mounting portion 420 is rotatably disposed and provided with a stop plate 422. The second end of the rotatable mounting portion 420 extends toward the hoisting cage. The roller mounting portion 430 is disposed at the second end of the rotatable mounting portion 420 and extends in a direction perpendicular to the extension of the rotatable mounting portion 420. The roller body 431 is rotatably mounted at the end of the roller mounting portion 430 away from the rotatable mounting portion 420 and is used to abut against the catch iron on the hoisting cage. The rotatable mounting portion 420 can accommodate the distance between the hoisting cage and the door frame 100, while the extended roller mounting portion 430 can accommodate the installation position of the catch iron on the hoisting cage. The addition of the roller body 431 can reduce friction with the catch iron and facilitate replacement. Furthermore, the rotating mounting portion 420 is provided with a bumper sleeve 421, a stop plate 422, and a roller mounting portion 430 in sequence along the direction extending toward the cage. The stop plate 422 can be connected to the bumper sleeve 421. Of course, the present invention is not limited to this. It is also possible for the bumper drive assembly 400 to only have the rotating mounting portion 420, and the end of the rotating mounting portion 420 extending toward the cage can abut against the bumper.

[0050] Specifically, when the elevator descends and stops at the ground floor, the contact plate on the elevator cage moves downwards with the cage. When the contact plate hits the roller 431 on the contact rod drive assembly 400, it drives the contact rod body to rotate downwards around the contact rod mounting shaft 720 on the first side plate 700. At this time, the stop plate 422 on the contact rod body is no longer in a horizontal state, and the stopping effect on the limiting rod part 540 of the limiting swing rod 500 is removed. At this time, the limiting swing rod 500 can rotate towards the direction closer to the cage under the action of external force. When the double door assembly is opened, the door limiting shaft 201 on the first double door 200 rotates accordingly and engages with the telescopic lock tongue 5 in the second locking position. The 20 abuts against the limit lever 500 to push it to rotate towards the cage until it reaches the first unlocking position. At this time, both the telescopic latch 520 and the limit lever 540 are in an inclined state, and the door limit shaft 201 can pass smoothly over the telescopic latch 520 to complete the unlocking. At the same time, since the telescopic latch 520 is no longer abutted by the door limit shaft 201, the limit lever 500 can be driven to reset and rotate to the first locking position under the action of the lever reset member 550. When the limit lever 500 rotates to the first locking position, the shaft-mounted limit part 511 can abut against the stop block 804 on the second side plate 800 to limit further rotation.

[0051] Simultaneously, when the double door assembly is closed, the door limit shaft 201 on the first double door 200 rotates to pass the upper end of the telescopic latch 520 and contacts the guide inclined surface 526 at the upper end of the telescopic latch 520. During the rotation, the telescopic latch 520 is gradually compressed downward, so that the latch reset member 530 accumulates elastic potential energy. When the telescopic latch 520 is pressed down to the second unlock position, the door limit shaft 201 can smoothly pass over the guide inclined surface 526 to enter the side of the telescopic latch 520 away from the cage. After the telescopic latch 520 loses the downward pressing action of the door limit shaft 201, the telescopic latch 520 can rise and reset to the first locking position under the drive of the latch reset member 530 to achieve locking of the door limit shaft 201. This causes the contact plate on the hoist cage to move upwards with the cage as it leaves the ground floor. At this point, the contact plate no longer contacts the roller 431 on the contact rod drive assembly 400. Under the action of the contact rod reset component 600, the contact rod body rotates upwards around the contact rod mounting shaft 720 on the first side plate 700. When the contact rod body rotates to a horizontal position, the stop plate 422 on the contact rod body contacts the stop shaft 805 on the second side plate 800, preventing further rotation and maintaining a horizontal position. At this time, the stop plate 422 is also horizontal, thus stopping the limit rod 540 and restricting the rotation of the limit swing rod 500. This ensures that the telescopic latch 520 and the limit rod 540 remain stably vertical, and the door limit shaft 201 is stably locked, preventing the double door assembly from opening.

[0052] Furthermore, the present invention provides an elevator, wherein the elevator includes a double-door railing device for an elevator as described above. Since the elevator adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0053] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A double-door railing device for an elevator, characterized in that, include: A double door assembly includes a door frame (100) and a first double door (200) and a second double door (300) rotatably mounted on the door frame (100), wherein at least one of the first double door (200) and the second double door (300) has a door limiting shaft (201) extending out from the mounting side. The safety lock mechanism, corresponding to the door limiting shaft (201), is mounted on the door frame (100) and includes a strike bar drive assembly (400), a latch rocker assembly, and a strike bar reset component (600). The latch rocker assembly includes a limiting rocker (500), a telescopic latch (520), a rocker reset component (550), and a latch reset component (530). The limiting rocker (500) is swung and reset from the first unlocking position to the first locking position by the rocker reset component (550) in the direction away from the cage. The lower end of the limiting rocker (500) is provided with a limiting rod portion (540), and the upper end is provided with a telescopic latch (520) that locks the door limiting shaft (201). The telescopic latch (520) is raised and lowered. The latch reset member (530) rises and resets from the second unlock position to the second locking position. The first end of the catch rod drive assembly (400) is rotatably set and a stop plate (422) is provided on the side of the limiting rod (540) away from the cage. The second end extends toward the cage and abuts against the catch iron on the cage. Under the abutment of the catch iron, the catch rod drive assembly (400) drives the stop plate (422) to rotate, so as to remove the stopping effect on the limiting rod (540). The catch rod reset member (600) drives the catch rod drive assembly (400) to reset after losing the abutment effect of the catch iron, so that the stop plate (422) returns to applying the stopping effect on the limiting rod (540).

2. The lifting platform double-door railing device according to claim 1, characterized in that, The limiting rocker arm (500) includes a rocker arm shaft mounting part (510) and a limiting rod part (540). The rocker arm shaft mounting part (510) has a rocker arm mounting hole that extends laterally through it, so that the limiting rocker arm (500) can be rotatably mounted. The reset drive end of the rocker arm reset member (550) is mounted on the first end of the rocker arm shaft mounting part (510), so that the rocker arm shaft mounting part (510) can be driven to reset from the first unlocked position to the first locked position. The telescopic lock tongue (520) and the limiting rod part (540) are respectively located on the upper and lower sides of the rocker arm shaft mounting part (510).

3. The lifting platform double-door railing device according to claim 2, characterized in that, The swing arm reset component (550) is configured as a first spring component. The first end of the swing arm shaft mounting part (510) extends along a portion of the periphery of the swing arm mounting hole and is provided with a spring hook part (512). The spring hook part (512) is used for the reset drive end of the first spring component to hook. And / or, the second end of the swing arm shaft mounting part (510) extends along a portion of the periphery of the swing arm mounting hole and is provided with a shaft mounting limiting part (511), and the safety lock mechanism further includes a stop block (804), which abuts against the shaft mounting limiting part (511) when the swing arm shaft mounting part (510) is reset to the first locking position.

4. The lifting platform double-door railing device according to claim 1, characterized in that, The latch rocker arm assembly also includes a guide rod (560), the lower end of which is connected to the side of the limiting rocker arm (500) away from the limiting rod portion (540). The telescopic latch (520) is vertically mounted on the guide rod (560), and the rocker arm reset member (550) is provided between the limiting rocker arm (500) and the telescopic latch (520).

5. The lifting platform double-door railing device according to claim 4, characterized in that, The guide rod (560) includes a rod body (561) and a rod head (562) located at the upper end of the rod body (561). The inner cavity of the telescopic latch (520) is provided with a drive cavity (521), a through-rod cavity (522) and a limiting cavity (523) from bottom to top. The rod head (562) can be vertically accommodated in the limiting cavity (523) and can abut against the bottom wall of the limiting cavity (523). The rod body (561) passes through the through-rod cavity (522) and the drive cavity (521) from the limiting cavity (523) so that the lower end is connected to the side of the limiting swing rod (500) away from the limiting rod part (540). The latch reset member (530) is sleeved on the rod body (561) and placed between the limiting swing rod (500) and the top wall of the drive cavity (521).

6. The lifting platform double-door railing device according to claim 5, characterized in that, The telescopic latch (520) includes a latch body (524) and a threaded connecting sleeve (525). The inner cavity of the threaded connecting sleeve (525) extends vertically and includes the driving cavity (521), the through-rod cavity (522), and the limiting cavity (523). The outer wall of the threaded connecting sleeve (525) is provided with a first external thread section. The lower end of the latch body (524) is sleeved on the threaded connecting sleeve (525) and the inner cavity is provided with a first internal thread section that is threadedly connected to the first external thread section. And / or, the lower end of the rod body (561) is detachably threaded to the limiting swing rod (500).

7. The lifting platform double-door railing device according to any one of claims 1 to 6, characterized in that, The upper end of the telescopic latch (520) is provided with a guide inclined surface (526), ​​which is inclined upward in the direction from the cage toward the door frame (100). And / or, the safety lock mechanism further includes a stop shaft (805) located on the upper side of the stop plate (422), the stop shaft (805) abutting against the stop plate (422) when the stop plate (422) returns to applying a stopping action to the limiting rod portion (540).

8. The lifting platform double-door railing device according to any one of claims 1 to 6, characterized in that, The safety lock mechanism further includes a first side plate (700), which is detachably mounted on the door frame (100). The first side plate (700) is provided with a swing arm mounting shaft (710) and a stop arm mounting shaft (720) spaced apart. The limiting swing arm (500) and the stop arm drive assembly (400) are respectively fitted onto the swing arm mounting shaft (710) and the stop arm mounting shaft (720) in a corresponding manner. The end of the swing arm mounting shaft (710) and the stop arm mounting shaft (720) away from the first side plate (700) is provided with a fastening hole (730) for fasteners to be fastened.

9. The lifting platform double-door railing device according to claim 8, characterized in that, The rocker arm mounting shaft (710) includes a first shaft segment (711) and a second shaft segment (712) sequentially arranged from the first side mounting plate (700). The shaft diameter of the first shaft segment (711) is larger than that of the second shaft segment (712), so that a stepped surface (713) is formed between the first shaft segment (711) and the second shaft segment (712) facing away from the first side mounting plate (700). The second shaft segment (712) has the connecting fastening hole (730) at one end away from the first shaft segment (711). The reset component (550) and the limiting swing rod (500) are both sleeved on the second shaft segment (712), and the swing rod reset component (550) is located between the step surface (713) and the limiting swing rod (500). The reset drive end and the fixed end of the swing rod reset component (550) are respectively installed on the limiting swing rod (500) and the first shaft segment (711). The first shaft segment (711) has an installation plane (714) on the side away from the cage for the fixed end of the swing rod reset component (550) to hook onto. And / or, the first end of the bumper drive assembly (400) is provided with a bumper sleeve (421) fitted on the bumper mounting shaft (720), and the bumper reset member (600) is provided as a second spring member fitted on the bumper sleeve (421), and the two ends of the second spring member are respectively installed on the first side plate (700) and the bumper drive assembly (400).

10. The lifting platform double-door railing device according to claim 8, characterized in that, The safety lock mechanism further includes a second side plate (800), which is spaced apart from the first side plate (700) and has two connecting through holes (806). The two connecting through holes (806) are respectively connected to the connecting fastening holes (730) of the swing rod mounting shaft (710) and the bumper mounting shaft (720). The fastener passes through the door frame (100) and the connecting through holes (806) in sequence and is fastened to the connecting fastening holes (730) so that the limiting swing rod (500) and the bumper drive assembly (400) are installed between the first side plate (700) and the second side plate (800). The first side plate (700) is provided with a stop block (804) and a stop shaft (805).

11. The lifting platform double-door railing device according to any one of claims 1 to 6, characterized in that, The collision rod drive assembly (400) includes a collision rod body and a roller body (431). The collision rod body includes a rotating mounting part (420) and a roller mounting part (430). The first end of the rotating mounting part (420) is rotatably disposed and provided with the stop plate (422). The second end of the rotating mounting part (420) extends toward the cage. The roller mounting part (430) is disposed at the second end of the rotating mounting part (420) and extends along a direction perpendicular to the extension of the rotating mounting part (420). The roller body (431) is rotatably mounted at the end of the roller mounting part (430) away from the rotating mounting part (420) and is used to abut against the collision iron on the cage.

12. An elevator, characterized in that, The elevator includes a double-door railing device for an elevator according to any one of claims 1 to 11.

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