Counter door fence device for elevator and elevator

Abstract

This invention discloses a double-door fence device for a hoist and a hoist itself, including a double-door assembly and a safety lock mechanism. At least one of the first and second double-doors of the double-door assembly is provided with a door limiting shaft. The gravity swing arm of the safety lock mechanism is rotatable between a locked position and an unlocked position. A first end of a catch rod drive assembly is rotatably configured and has a push plate, while the second end extends towards the hoist cage and is used to abut against a stop iron. Under the abutment action of the stop iron, the catch rod drive assembly can drive the push plate to move away from the gravity swing arm, thereby removing the stop on the gravity swing arm. An elastic reset member is used to reset the catch rod drive assembly, so that the push plate pushes the gravity swing arm back to the locked position. The safety lock mechanism can be moved to the mounting side of the double-door assembly, and the catch rod drive assembly abutting against the stop iron extends outwards, so that the hoist cage does not need to be installed 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, a first aspect of 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 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 is provided on 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 trigger drive assembly, a gravity swing arm, and an elastic reset member, wherein the gravity swing arm is used to lock the door limiting shaft. The position and the unlocking position of the unlocking door limit shaft are oscillating. The first end of the touch bar drive assembly is rotatably set and has a push plate that abuts against the gravity swing bar, and the second end is set to extend toward the cage and abut against the stop iron on the cage. The touch bar drive assembly is used to drive the push plate to move away from the gravity swing bar under the abutting action of the stop iron, so as to remove the stop on the gravity swing bar. The elastic reset member is used to drive the touch bar drive assembly to reset when the abutting action of the stop iron is lost, so that the push plate pushes the gravity swing bar back to the locked position.

[0006] In one embodiment of the present invention, the push plate includes a plate body and a plate body shaft mounting part disposed at the lower end of the plate body. The plate body shaft mounting part is rotatably mounted on the first end of the bumper drive assembly. The safety lock mechanism also has a first limiting member and a second limiting member disposed on opposite sides of the plate body. The upper end of the plate body is used to abut against the gravity swing arm and push the gravity swing arm back to the locked position.

[0007] In one embodiment of the present invention, the upper end of the plate body is provided with a limiting notch that abuts against the gravity pendulum rod.

[0008] In one embodiment of the present invention, the gravity swing arm includes a swing arm shaft mounted part that is rotatably disposed and a first locking rod part and an abutting rod part that are spaced apart in the circumferential direction of the swing arm shaft mounted part. The first locking rod part is used to abut against the door limit shaft to restrict the door limit shaft to the locked position. The abutting rod part is located on the side of the swing arm shaft mounted part away from the door frame and is used to drive the gravity swing arm to rotate to the unlocked position when the abutting action of the push plate is lost.

[0009] In one embodiment of the present invention, the rocker arm shaft mounting part is provided with a rocker arm mounting hole for rotatable installation, and the rocker arm shaft mounting part extends out along a portion of the periphery of the rocker arm mounting hole and is provided with a shaft mounting limiting part. The safety lock mechanism also includes a third limiting member and a fourth limiting member respectively disposed at opposite ends of the shaft mounting limiting part.

[0010] In one embodiment of the present invention, the gravity swing arm further includes a second locking rod portion. The first locking rod portion, the abutment rod portion, and the second locking rod portion are sequentially spaced apart in the circumferential direction of the swing arm shaft portion. The second locking rod portion is located on the opposite side of the first locking rod portion, and the weight of the second locking rod portion is less than the weight of the first locking rod portion. The push rod drive assembly is also provided with a stop plate. The stop plate is located on the side of the push plate facing the door frame, and the second locking rod portion is used to be positioned between the stop plate and the push plate when in the locked position.

[0011] In one embodiment of the present invention, the safety lock mechanism further includes a fifth limiting member located on the upper side of the stop plate, the fifth limiting member being used to abut against the stop plate when the trigger drive assembly is reset.

[0012] 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 gravity 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.

[0013] 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 elastic reset member is provided as a spring member fitted on the collision rod sleeve, with the two ends of the spring member respectively installed on the first side plate and the collision rod drive assembly.

[0014] In one embodiment of the present invention, the first side plate is further provided with a spring stop on the side of the door frame facing the mounting axis of the touch bar, one end of the spring is hooked onto the spring stop, and the other end of the spring is connected to the touch bar drive assembly.

[0015] 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 gravity swing arm and the bumper drive assembly are installed between the first side plate and the second side plate. The first side plate is provided with corresponding limiting members.

[0016] 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 rotatable mounting portion and a roller mounting portion. The first end of the rotatable mounting portion is rotatably disposed and has a push plate. The second end of the rotatable mounting portion extends toward the cage. The roller mounting portion is disposed at the second end of the rotatable mounting portion and extends in a direction perpendicular to the extension of the rotatable mounting portion. The roller body is rotatably mounted at the end of the roller mounting portion away from the rotatable mounting portion and is used to abut against the collision iron on the cage.

[0017] 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.

[0018] Through the above technical solution, the lifting platform double-door railing device provided by the present invention has the following beneficial effects: When the elevator uses the aforementioned double-door barrier device, since it includes a double-door assembly and a safety lock mechanism, as the cage moves to the corresponding double-door barrier device, the contact iron on the cage abuts against the contact rod drive assembly. The contact rod drive assembly rotates and drives the push plate to move away from the gravity swing arm, thus removing the stop on the gravity swing arm. At this time, the gravity swing arm is unrestricted and can rotate from the locked position to the unlocked position, thereby allowing the double-door assembly to open smoothly, and the elastic reset member accumulates the elastic potential energy required for reset. When the double-door assembly is closed and the cage leaves the corresponding double-door barrier device, the contact rod drive assembly... As the contact metal gradually loses its abutting effect, the elastic potential energy accumulated by the elastic reset component can drive the contact rod drive assembly to reset and rotate, thereby driving the push plate to abut against the gravity swing rod and pushing the gravity swing rod back to the locking position to restrict 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 contact rod drive assembly for abutting against the contact metal on the cage extends towards the cage, thereby eliminating the need for the cage to be installed in a position close to the fence door, which is beneficial for the production and disassembly of the cage.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] 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 open state 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 7This is a schematic diagram of the structure of the safety lock mechanism in the locked position according to one embodiment of the present invention; Figure 8 This is a schematic diagram of the safety lock mechanism in the locked position according to an embodiment of the present invention from another perspective. Figure 9 This is a schematic diagram of the safety lock mechanism in the unlocked position according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a gravity pendulum according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the contact bar body according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the first side plate according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the installation structure of the elastic reset member according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the structure of the second side plate according to an embodiment of the present invention; Figure 15 This is a schematic diagram of the push plate according to an embodiment of the present invention; Figure 16 This is a schematic diagram of the push plate according to another embodiment of the present invention.

[0021] 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; 410. Push plate; 411. Plate body; 412. Plate body shaft mounting part; 413. Limiting notch; 420. Rotating mounting part; 421. Bumper rod sleeve; 422. Stop plate; 423. Push plate mounting shaft; 430. Roller mounting part; 431. Roller body; 500. Gravity swing arm; 510. Swing arm shaft mounting part; 511. Shaft mounting limiting part; 520. First locking rod part; 530. Abutting rod part; 540. Second locking rod part; 600. Elastic reset part; 700. First side mounting plate; 710. Swing arm mounting shaft; 720. Bump rod mounting shaft; 730. Connecting fastening hole; 740. Spring stop block; 800. Second side mounting plate; 801. First limiting part; 802. Second limiting part; 803. Third limiting part; 804. Fourth limiting part; 805. Fifth limiting part; 806. Connecting through hole. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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: The 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 is provided with a door limiting shaft 201 on 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 gravity swing arm 500, and an elastic reset member 600. The gravity swing arm 500 is rotatably configured between the locked position of the door limit shaft 201 and the unlocked position of the door limit shaft 201. The first end of the touch bar drive assembly 400 is rotatably configured and has a push plate 410 that abuts against the gravity swing arm 500, and the second end extends toward the cage and abuts against a stop iron on the cage. Under the abutting action of the stop iron, the touch bar drive assembly 400 drives the push plate 410 to move away from the gravity swing arm 500 to remove the stop on the gravity swing arm 500. The elastic reset member 600 drives the touch bar drive assembly 400 to reset when the abutting action of the stop iron is removed, so that the push plate 410 pushes the gravity swing arm 500 back to the locked position.

[0025] 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 push plate 410 to move away from the gravity swing rod 500, thereby removing the stop on the gravity swing rod 500. At this time, the gravity swing rod 500 is no longer restricted and can rotate from the locked position to the unlocked position, so that the double-door assembly can be opened smoothly, and the elastic reset member 600 accumulates the elastic potential energy required for reset; when the double-door assembly is closed and the cage leaves the corresponding double-door barrier device, the contact rod drive assembly 400... As the contact metal gradually loses its abutting effect, the elastic potential energy accumulated by the elastic reset component 600 can drive the contact rod drive assembly 400 to reset and rotate, thereby driving the push plate 410 to abut against the gravity swing rod 500 and pushing the gravity swing rod 500 back to the locking position to restrict the door limit shaft 201. 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 contact rod drive assembly 400, which abuts against the contact metal on the cage, can extend towards the cage, thereby eliminating the need for the cage to be installed in a position close to the fence door, which is beneficial for the production and disassembly of the cage.

[0026] Specifically, the gravity lever 500 loses its restriction and can rotate from the locked position to the unlocked position. This rotation can be achieved by its own gravity or by the abutment of the door limit shaft when the double door assembly is opened.

[0027] Specifically, see Figures 1 to 6 The safety lock mechanism in the double-door railing device for the elevator is preferably one. The door limit shaft 201 can be set on the first double-door 200, and the number is not limited. The safety lock mechanism can be installed on one of the door limit shafts 201 set near the upper end of the corresponding double-door. The first double-door 200 is provided with a first baffle 202 on the opening side away from the installation side. When the first double-door 200 and the second double-door 300 are closed, the first baffle 202 can stop the opening of the second double-door 300. 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 one-to-one 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.

[0028] 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 contact bars can be provided on the cage. The two safety lock mechanisms are respectively set one-to-one with the door limit shafts 201 on the first double door 200 and the second double door 300. The two contact bars can abut against the contact rod drive assembly 400 of the two safety lock mechanisms one-to-one.

[0029] More specifically, such as Figure 5 and Figure 6 As 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.

[0030] See Figures 7 to 9 ,as well as Figure 14In one embodiment of the present invention, the push plate 410 includes a plate body 411 and a plate body shaft mounting part 412 disposed at the lower end of the plate body 411. The plate body shaft mounting part 412 is movably fitted onto the first end of the bumper drive assembly 400. The safety lock mechanism also has a first limiting member 801 and a second limiting member 802 disposed on opposite sides of the plate body 411. The upper end of the plate body 411 can abut against the gravity swing arm 500 and push the gravity swing arm 500 back to the locked position. The push plate 410 is movably fitted onto the contact rod drive assembly 400 and confined between the first limiting member 801 and the second limiting member 802, rather than being fixedly installed. This allows the contact rod drive assembly 400 to rotate under the abutment of the contact iron, while the push plate 410 does not directly follow the contact rod drive assembly 400 in large-angle rotation. Instead, it is designed to rotate at a small angle and move downward between the first limiting member 801 and the second limiting member 802, or it can be designed to only move downward between the first limiting member 801 and the second limiting member 802. This allows the push plate 410 to abut against the gravity swing rod 500 more smoothly during reset. Of course, the invention is not limited to this. The push plate 410 can also be fixedly installed at the first end of the contact rod drive assembly 400, in which case the movement of the push plate 410 will follow the contact rod drive assembly 400 in large-angle rotation.

[0031] Furthermore, the plate body shaft mounting portion 412 is formed with a shaft hole through which the first end of the collision rod drive assembly 400 movably passes, such as... Figure 15 As shown, the shaft hole can be set as a round hole to fit the size of the push plate mounting shaft 423 on the bumper drive assembly 400. This allows the bumper drive assembly 400 to rotate under the abutment of the bumper, while the push plate 410 rotates and moves downward between the first limiting member 801 and the second limiting member 802 at a small angle. Figure 16 As shown, the shaft hole can be set as an oblong hole so that the push plate mounting shaft 423 on the bumper drive assembly 400 can move within the oblong hole. This allows the bumper drive assembly 400 to rotate under the abutment of the bumper, while the push plate 410 moves only downward between the first limit member 801 and the second limit member 802.

[0032] Furthermore, when the shaft hole can be set as a round hole, the first limiting member 801 and the second limiting member 802 can be set on the second side mounting plate 800. The first limiting member 801 is located on the side of the push plate 410 facing the cage, and the second limiting member 802 is located on the side of the push plate 410 facing away from the cage. The first limiting member 801 and the second limiting member 802 are staggered in the height direction, and the first limiting member 801 is located below the second limiting member 802. Furthermore, the rotating mounting portion 420 of the bumper body of the bumper drive assembly 400 is provided with a push plate mounting shaft 423. The plate body mounting portion 412 of the push plate 410 is sleeved on the push plate mounting shaft 423, and both ends of the plate body mounting portion 412 are endoscopically limited. The end of the plate body mounting portion 412 facing away from the rotating mounting portion 420 is endoscopically limited by an endoscopically limited nut, and the end facing the rotating mounting portion 420 is endoscopically limited by a stepped limiting portion on the push plate mounting shaft 423.

[0033] In one embodiment of the present invention, the upper end of the plate body 411 is provided with a limiting notch 413 that abuts against the gravity pendulum 500. The addition of the limiting notch 413 ensures that during the process of the plate body 411 abutting against the gravity pendulum 500 and pushing it, there are at least two directions that limit the gravity pendulum 500, so as to ensure the reliability and stability of the abutment action. Specifically, the limiting notch 413 is located at the upper end of the plate body 411 and at a corner position away from the first limiting member 801 and the second limiting member 802 (or away from the second side mounting plate 800). The limiting notch 413 includes a guide side inclined surface and a push driving surface. The guide side inclined surface is inclined away from the first limiting member 801 and the second limiting member 802 (or away from the second side mounting plate 800) in the direction from the upper end of the plate body 411 to the lower end, so as to facilitate disengagement from the gravity swing rod 500 and to facilitate guiding the gravity swing rod 500 to the push driving surface. The push driving surface is located at the lower end of the guide inclined surface and is arranged upward, so as to abut against the gravity swing rod 500 and push the gravity swing rod 500 back to the locked position. Of course, the present invention is not limited to this. It is also possible that the upper end of the plate body 411 does not have a limiting notch 413, and the upper end surface of the plate body 411 abuts against the gravity swing rod 500.

[0034] See Figures 7 to 10In one embodiment of the present invention, the gravity swing arm 500 includes a rotatably configured swing arm shaft 510 and a first locking rod 520 and an abutting rod 530 spaced apart in the circumferential direction from the swing arm shaft 510. The first locking rod 520 can abut against the door limiting shaft 201 to restrict the door limiting shaft 201 to the locked position. The abutting rod 530 is located on the side of the swing arm shaft 510 away from the door frame 100 and can drive the gravity swing arm 500 to rotate to the unlocked position when the abutting action of the push plate 410 is lost. By adding the first locking rod 520 and the abutting rod 530, not only can the door limiting shaft 201 be restricted and the abutting action with the push plate 410 be achieved, but also because the abutting rod 530, which abuts the push plate 410, is located on the side of the swing arm shaft mounting 510 away from the door frame 100, and also on the side of the swing arm shaft mounting 510 away from the door limiting shaft 201, the center of gravity of the entire gravity swing arm 500 is biased towards the side of the swing arm shaft mounting 510 away from the door limiting shaft 201. Therefore, when the abutting rod 530 loses the abutting action of the push plate 410, the gravity of the abutting rod 530 can drive the gravity swing arm 500 to rotate away from the door limiting shaft 201 until it rotates to the unlocked position.

[0035] Furthermore, the first locking rod portion 520 and the abutting rod portion 530 can be arranged perpendicularly to each other on the swing arm shaft mounting portion 510, that is, the included angle between them can be 90°, and when the gravity swing arm 500 is in the locked position, the first locking rod portion 520 can remain in a vertical state, and the abutting rod portion 530 can remain in a horizontally extended state. In addition, the rod diameter of the abutting rod portion 530 can be set to be smaller than the rod diameter of the first locking rod portion 520, so that the push plate 410 can easily push the abutting rod portion 530. Of course, the present invention is not limited to this, and the first locking rod portion 520 and the abutting rod portion 530 can also be connected as one piece.

[0036] See Figures 7 to 10 ,as well as Figure 14In one embodiment of the present invention, the rocker arm shaft mounting portion 510 is provided with a rotatable rocker arm mounting hole, and a shaft mounting limiting portion 511 extends out from a portion of the periphery of the rocker arm mounting hole. The safety lock mechanism further includes a third limiting member 803 and a fourth limiting member 804 respectively disposed at opposite ends of the shaft mounting limiting portion 511. That is, by adding the shaft mounting limiting portion 511, the third limiting member 803 and the fourth limiting member 804, the rotation range of the rocker arm shaft mounting portion 510 can be accurately limited. Specifically, the shaft mounting limiting portion 511 is located above the third limiting member 803 and the fourth limiting member 804, and when the gravity rocker arm 500 rotates to the unlocked position, one side of the shaft mounting limiting portion 511 abuts against the third limiting member 803, and when the gravity rocker arm 500 resets and rotates to the locked position, the other side of the shaft mounting limiting portion 511 abuts against the fourth limiting member 804. Specifically, the rocker arm shaft mounting part 510 is sleeved onto the rocker arm mounting shaft 710 through the rocker arm mounting hole, and both ends of the rocker arm shaft mounting part 510 can be endoscopically limited by the stepped limiting part on the rocker arm mounting shaft 710 and the second side mounting plate 800, respectively. The third limiting member 803 and the fourth limiting member 804 can be provided on the second side mounting plate 800. Of course, the present invention is not limited to this, and the rocker arm shaft mounting part 510 can also be a rotatably mounted solid shaft.

[0037] In one embodiment of the present invention, the gravity swing arm 500 further includes a second locking rod portion 540. The first locking rod portion 520, the abutment rod portion 530, and the second locking rod portion 540 are sequentially spaced apart in the circumferential direction of the swing arm shaft mounting portion 510. The second locking rod portion 540 is located on the opposite side of the first locking rod portion 520. That is, when the gravity swing arm 500 is in the locked position, both the first locking rod portion 520 and the second locking rod portion 540 can be vertically arranged. The first locking rod portion 520 is arranged to be vertically arranged facing upwards, and the second locking rod portion 540 is arranged to be vertically arranged facing downwards. The weight of the second locking rod portion 540 is less than the weight of the first locking rod portion 520. The bumper drive assembly 400 is also provided with a stop plate 422. The stop plate 422 is located on the side of the push plate 410 facing the door frame 100. The second locking rod portion 540 can be placed between the stop plate 422 and the push plate 410 when it is in the locked position. The addition of the second locking rod portion 540 serves two purposes: firstly, it slows down the swing speed of the gravity swing rod 500 when it loses the abutment of the push plate 410, and facilitates the push plate 410 in pushing the gravity swing rod 500 back to the locked position; secondly, it limits the gravity swing rod 500 from the side away from the push plate 410 by interacting with the stop plate 422, further ensuring the stability of the gravity swing rod 500 in the locked position. Specifically, the diameter of the second locking rod portion 540 can be between the diameters of the first locking rod portion 520 and the abutment rod portion 530. The stop plate 422 is located on the side of the rotating mounting portion 420 of the contact rod body of the contact rod drive assembly 400 facing the gravity swing rod 500.

[0038] See Figures 7 to 9 ,as well as Figure 11 and Figure 14 In one embodiment of the present invention, the safety lock mechanism further includes a fifth limiting member 805 located on the upper side of the stop plate 422. The fifth limiting member 805 can abut against the stop plate 422 when the trigger rod drive assembly 400 is reset. The addition of the fifth limiting member 805 ensures that when the trigger rod drive assembly 400 loses the abutting action of the trigger and is driven by the elastic reset member 600, it can rotate until the stop plate 422 abuts against the fifth limiting member 805 and stops, thus ensuring the accuracy of the reset. Simultaneously, when the trigger rod drive assembly 400 rotates under the abutting action of the trigger, it can drive the stop plate 422 to rotate away from the fifth limiting member 805. Further, the fifth limiting member 805 can be provided on the second side mounting plate 800.

[0039] See Figures 7 to 12 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 gravity swing arm 500 and a stop arm drive 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 disassembled and maintained. Meanwhile, the connecting fastening holes 730 provided on the swing arm mounting shaft 710 and the bumper mounting shaft 720 allow the gravity swing arm 500 and the bumper drive assembly 400 to be fitted onto their respective mounting shafts first, and then the first side mounting plate 700 to be mounted on the door frame 100. Then, fasteners are inserted through the door frame 100 into the connecting fastening holes 730 to detachably connect the ends of the swing arm mounting shaft 710 and the bumper mounting shaft 720 away from the first side mounting plate 700 to the door frame 100. Of course, the invention is not limited to this; the swing arm mounting shaft 710 and the bumper mounting shaft 720 can also be directly mounted on the door frame 100.

[0040] 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. A first side mounting plate 700 can be mounted on one of the first groove plate 106 and 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.

[0041] See Figures 7 to 9 ,as well as Figure 11 and Figure 13 In 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 elastic reset member 600 is configured as a spring member fitted onto the contact rod sleeve 421. The two ends of the 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 spring member to ensure the reliability of the spring member installation. 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. A 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, with both ends of the spring correspondingly mounted on the first side mounting plate 700 and the rotating mounting portion 420. Specifically, the elastic reset member 600 can also be other suitable elastic components.

[0042] 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 mounting shaft 720 facing the door frame 100. One end of the spring is hooked onto the spring stop 740, and the other end of the spring is connected to the bumper drive assembly 400. The addition of the spring stop 740 facilitates the installation of the spring on the first side plate 700. Specifically, the spring includes, but is not limited to, a torsion spring, and the rotating mounting portion 420 of the bumper drive assembly 400 is provided with a hook hole for the other end of the spring to pass through.

[0043] See Figures 7 to 9 ,as well as Figure 12 and Figure 14 In 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 bumper 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 gravity swing arm 500 and the bumper drive assembly 400 are installed between the first side mounting plate 700 and the second side mounting plate 800. The second side mounting plate 800 may be provided with corresponding limiting members. By adding the second side mounting plate 800, the aforementioned first limiting member 801, second limiting member 802, third limiting member 803, fourth limiting member 804 and fifth limiting member 805 can be integrated into one unit to facilitate 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 first limiting member 801, the second limiting member 802, the third limiting member 803, the fourth limiting member 804 and the fifth limiting member 805 can also be directly disposed on the door frame 100.

[0044] like Figures 7 to 9 ,as well as Figure 11 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 has a push plate 410. 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 can be 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 part 420 is provided with a bumper sleeve 421, a stop plate 422, a push plate mounting shaft 423 and a roller mounting part 430 in sequence along the direction of extension toward the cage. The stop plate 422 can be connected to the bumper sleeve 421. The push plate mounting shaft 423 is spaced apart from the stop plate 422 and the roller mounting part 430. The push plate mounting shaft 423 can be rotatably mounted on the plate body shaft mounting part 412 of the push plate 410.

[0045] 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 the same time, the downward rotation of the contact rod body causes the push plate 410 to slide downwards along the guide groove formed by the first limiting member 801 and the second limiting member 802 on the second side plate 800. The downward sliding push plate 410 removes its abutment action on the abutment rod portion 530 on the gravity swing arm 500. The stop plate 422 on the main body of the contact bar is no longer in a horizontal position blocking the second locking rod part 540 of the gravity swing bar 500, so that the gravity swing bar 500 can rotate around the swing bar mounting shaft 710 on the first side plate 700 away from the door limit shaft 201 under the gravity of the first locking rod part 520 and the abutment rod part 530. When the gravity swing bar 500 is stuck and does not rotate, when the first double door 200 is opened outward, the door limit shaft 201 on the first double door 200 swings outward, which will also cause the gravity swing bar 500 to rotate. When the gravity swing arm 500 rotates to the point where the shaft-mounted limiting part 511 contacts the third limiting part 803 on the second side plate 800, the gravity swing arm 500 cannot continue to rotate and reach the unlocked position. This effectively prevents the gravity swing arm 500 from rotating too much due to the gravity of the first locking rod part 520, causing the abutment rod part 530 to no longer be directly above the push plate 410, resulting in the push plate 410 being unable to contact the abutment rod part 530 when sliding upward, thus preventing the gravity swing arm 500 from resetting.

[0046] When the hoist cage leaves the ground floor, the contact iron on the hoist cage moves upward with the cage. At this time, the contact iron no longer contacts the roller body 431 on the contact rod drive assembly 400. Under the action of the elastic reset member 600, the contact rod body drives the contact rod body to rotate upward around the contact rod mounting shaft 720 on the first side plate 700. When the contact rod body rotates to a horizontal state, the stop plate 422 on the contact rod body contacts the fifth limiting member 805 on the second side plate 800, and the contact rod body can no longer rotate, maintaining a horizontal state. During the process of the touch bar body rotating to a horizontal state, the guide groove formed by the first limiting member 801 and the second limiting member 802 on the second side mounting plate 800 of the push plate 410 slides upward together with the touch bar body. When the push plate 410 moves upward to contact the abutting rod portion 530 on the gravity swing rod 500, it drives the gravity swing rod 500 to rotate around the swing rod mounting shaft 710 on the first side mounting plate 700 in a direction close to the door limiting shaft 201. When the touch bar body rotates to a horizontal state, the first locking rod portion 520 of the gravity swing rod 500 also rotates to a vertical state, and the shaft-mounted limiting portion 511 on the gravity swing rod 500 contacts the fourth limiting member 804 on the second side mounting plate 800 to prevent the gravity swing rod 500 from continuing to rotate and reach the locking position.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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) on its mounting side; The safety lock mechanism is mounted on the door frame (100) corresponding to the door limit shaft (201) and includes a touch bar drive assembly (400), a gravity swing arm (500), and an elastic reset member (600). The gravity swing arm (500) is rotatably configured to restrict the door limit shaft (201) to a locked position and to unlock the door limit shaft (201). The first end of the touch bar drive assembly (400) is rotatably configured and has a push plate (410) that abuts against the gravity swing arm (500), and the second end extends toward the cage. The device is set up and used to abut against the stop iron on the cage. The stop rod drive assembly (400) is used to drive the push plate (410) to move away from the gravity swing rod (500) under the abutment action of the stop iron, so as to remove the stop on the gravity swing rod (500). The elastic reset member (600) is used to drive the stop rod drive assembly (400) to reset when the stop rod drive assembly (400) loses the abutment action of the stop iron, so that the push plate (410) pushes the gravity swing rod (500) back to the locked position.

2. The lifting platform double-door railing device according to claim 1, characterized in that, The push plate (410) includes a plate body (411) and a plate body shaft mounting part (412) located at the lower end of the plate body (411). The plate body shaft mounting part (412) is movably fitted onto the first end of the bumper drive assembly (400). The safety lock mechanism also has a first limiting member (801) and a second limiting member (802) located on opposite sides of the plate body (411). The upper end of the plate body (411) is used to abut against the gravity swing arm (500) and push the gravity swing arm (500) back to the locked position.

3. The lifting platform double-door railing device according to claim 2, characterized in that, The upper end of the plate body (411) is provided with a limiting notch (413) that abuts against the gravity swing arm (500); And / or, the plate body shaft mounting portion (412) is formed with a shaft hole through which the first end of the collision rod drive assembly (400) is movably inserted, the shaft hole being a round hole or an oblong hole.

4. The lifting platform double-door railing device according to claim 1, characterized in that, The gravity swing arm (500) includes a swing arm shaft mounting part (510) rotatably disposed and a first locking rod part (520) and an abutment rod part (530) spaced apart in the circumferential direction of the swing arm shaft mounting part (510). The first locking rod part (520) is used to abut against the door limiting shaft (201) to restrict the door limiting shaft (201) to the locked position. The abutment rod part (530) is located on the side of the swing arm shaft mounting part (510) away from the door frame (100) and is used to drive the gravity swing arm (500) to rotate to the unlocked position when the abutment action of the push plate (410) is lost.

5. The lifting platform double-door railing device according to claim 4, characterized in that, The swing arm shaft mounting part (510) is provided with a swing arm mounting hole for rotatable installation, and the swing arm shaft mounting part (510) extends out along a portion of the periphery of the swing arm mounting hole and is provided with a shaft mounting limiting part (511). The safety lock mechanism also includes a third limiting member (803) and a fourth limiting member (804) respectively disposed at opposite ends of the shaft mounting limiting part (511).

6. The lifting platform double-door railing device according to claim 4, characterized in that, The gravity swing arm (500) further includes a second locking rod portion (540). The first locking rod portion (520), the abutment rod portion (530), and the second locking rod portion (540) are sequentially spaced apart in the circumferential direction of the swing arm shaft mounting portion (510). The second locking rod portion (540) is located on the opposite side of the first locking rod portion (520), and the weight of the second locking rod portion (540) is less than the weight of the first locking rod portion (520). The bumper drive assembly (400) is also provided with a stop plate (422). The stop plate (422) is located on the side of the push plate (410) facing the door frame (100), and the second locking rod portion (540) is used to be placed between the stop plate (422) and the push plate (410) when in the locked position.

7. The lifting platform double-door railing device according to claim 6, characterized in that, The safety lock mechanism also includes a fifth limiting member (805) located on the upper side of the stop plate (422), the fifth limiting member (805) being used to abut against the stop plate (422) when the bumper drive assembly (400) is reset.

8. The lifting platform double-door railing device according to any one of claims 1 to 7, 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 bumper mounting shaft (720) spaced apart. The gravity swing arm (500) and the bumper drive assembly (400) are respectively fitted onto the swing arm mounting shaft (710) and the bumper mounting shaft (720) in a corresponding manner. The end of the swing arm mounting shaft (710) and the bumper 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 first end of the collision rod drive assembly (400) is provided with a collision rod sleeve (421) fitted on the collision rod mounting shaft (720). The elastic reset member (600) is a spring member fitted on the collision rod sleeve (421). The two ends of the spring member are respectively installed on the first side plate (700) and the collision rod 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 arm 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 gravity swing arm (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 corresponding limiting members.

11. The lifting platform double-door railing device according to any one of claims 1 to 7, characterized in that, The bumper drive assembly (400) includes a bumper body and a roller body (431). The bumper 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 has the push plate (410). 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 in 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 bumper 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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