Safety door lifting device for lifter

Abstract

The utility model belongs to the technical field of lifters, and particularly relates to a safety door lifting device for a lifter, which comprises a lifter frame and a hanging basket, the hanging basket is connected inside the lifter frame in a sliding manner, an extension device is arranged inside the hanging basket, and a lifting device is arranged at the top of the lifter frame. According to the safety door lifting device for the elevator, when large objects need to be lifted and transported, an electric telescopic rod is driven to push an extension basket to move outwards along a sliding bin, so that the internal area of a hanging basket is expanded, the application range of the device is widened, and when the objects are lifted, a lifting motor is started to drive a take-up roller to rotate in a mounting frame; the steel wire rope is pulled to rotate and retract along the transmission roller, the hanging basket at the bottom of the hanging ring connected with the hook at the bottom of the hanging arm is pulled to rise, so that lifting of objects is completed, the sliding groove is clamped outside the guide rail while the hanging basket rises, the hanging basket stably rises along the guide rail, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, and particularly relates to a safety door lifting device for an elevator. Background Technique

[0002] An elevator, also known as a lift or a vertical elevator, is a lifting mechanical device or apparatus for carrying people or goods up and down in a vertical passageway on a platform or a semi-enclosed platform. It is an integral whole composed of a platform and the equipment, motors, cables, and other auxiliary equipment for operating them. It is a very widely used vertical cargo transportation equipment. At present, the existing safety doors of elevators do not have the function of automatically closing. If construction workers forget to close the safety door, it may cause potential safety hazards and affect the lives of construction workers.

[0003] As disclosed in Chinese Patent Publication No. CN216129176U, an electrical protection device for a safety door of an elevator. When in use, when the safety door is not closed, since the distance measuring sensor cannot sense the position of the stopper, it will output a signal to the controller, and the controller will start the driving motor to make it operate, so that the gear can drive the rack to move, and then make the safety door move. After the stopper is placed in the second groove, the distance measuring sensor gets an induction, and then the controller will stop the operation of the driving motor, achieving the purpose that the safety door can be automatically closed, solving the problem of potential safety hazards caused by construction workers forgetting to close the safety door, and improving the safety of the elevator.

[0004] However, the electrical protection device for the safety door of the elevator in the above application does not have extensibility during its use. When it is necessary to transport larger items, this elevator cannot be used for transportation, and its applicable range is limited. Therefore, there are certain limitations.

[0005] Therefore, we urgently need to provide a safety door lifting device for an elevator. Content of the Utility Model

[0006] The purpose of the utility model is to provide a safety door lifting device for an elevator to solve the problem that the electrical protection device for the safety door of the elevator in the above background technique does not have extensibility during its use. When it is necessary to transport larger items, this elevator cannot be used for transportation, and its applicable range is limited.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A safety door lifting device for an elevator, including an elevator frame and a hanging basket. The hanging basket is slidably connected to the inside of the elevator frame. An extension device is arranged inside the hanging basket, and a lifting device is arranged at the top of the elevator frame.

[0008] The extension device includes an extension unit and a locking unit.

[0009] The extension unit includes an electric telescopic rod, an extension basket, and a safety door. The two electric telescopic rods are respectively installed on the left and right sides inside the bottom of the hanging basket. The extension basket is fixedly connected to the front end of the electric telescopic rod. The safety door is installed on the right side of the front of the extension basket through a hinge.

[0010] Further improvement lies in that a sliding bin is provided inside the bottom of the hanging basket. The electric telescopic rod is arranged inside the sliding bin. The extension basket is slidably connected to the inside of the sliding bin. When a larger item needs to be lifted and transported, the electric telescopic rod is driven to push the extension basket to move out along the sliding bin, thereby expanding the area inside the hanging basket and improving the applicable range of the device.

[0011] Further improvement lies in that the locking unit includes a fixed block, a locking rod, and a tension spring. The fixed block is fixedly connected to the top of one side of the safety door. The locking rod is inserted into the middle of the top of the extension basket. The tension spring is installed outside the locking rod.

[0012] Further improvement lies in that a locking cavity is provided at the top of one side of the front of the extension basket. The fixed block is slidably connected to the inside of the locking cavity. A plug hole is provided in the middle of the top of the extension basket, and the plug hole communicates with the locking cavity. The locking rod is inserted into the inside of the plug hole. A spring cavity is provided inside the plug hole. The tension spring is installed inside the spring cavity. After personnel and items enter the hanging basket, the safety door is closed. At the same time, the locking rod is pulled upward, and the tension spring inside the spring cavity is compressed. Meanwhile, the fixed block is snapped into the inside of the locking cavity. The locking rod is released, and the tension spring returns to its original position under the action of its own elasticity, thereby pushing the locking rod to insert into the inside of the fixed block, completing the locking of the safety door and improving the construction safety.

[0013] Further improvement lies in that the lifting device includes a lifting unit, a suspension unit, and a guiding unit.

[0014] The lifting unit includes a mounting frame, a wire reel, a steel wire rope, and a lifting motor. The mounting frame is installed on the top of the elevator frame. The wire reel is rotatably connected to the inside of the mounting frame. The steel wire rope is wound around the outer surface of the wire reel. The lifting motor is installed on one side of the mounting frame, and one end of the wire reel is connected to the output end of the lifting motor.

[0015] A further improvement lies in that the suspension unit includes a driving roller, a suspension arm, a hook, and a hanging ring. The two driving rollers are respectively rotatably connected to the top of the elevator frame, and the steel wire rope passes through the inside of the driving roller. The suspension arm is fixedly connected to the bottom of the steel wire rope, the hook is fixedly connected to the bottom of the suspension arm, and the hanging ring is fixedly connected to the center of the top of the hanging basket and hangs above the hook. When lifting an object, the lifting motor is started to drive the wire winding roller to rotate inside the mounting bracket, thereby pulling the steel wire rope to rotate and retract along the driving roller, and then pulling the hanging basket at the bottom of the hanging ring connected to the hook at the bottom of the suspension arm to rise, thus completing the lifting of the object.

[0016] A further improvement lies in that the guiding unit includes a guide rail and a chute. The four guide rails are respectively fixedly connected to the inner walls of the columns of the elevator frame, and the four chutes are respectively opened at the four corners of the top of the hanging basket, and the chutes are clamped outside the guide rails. While the hanging basket is rising, the chute is clamped outside the guide rail, so that the hanging basket rises smoothly along the guide rail, improving the stability of the device.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. For the safety door lifting device of this elevator, when lifting and transporting relatively large objects, the driving electric telescopic rod is driven to push the extension basket to move out along the sliding bin, thereby expanding the area inside the hanging basket and improving the applicable range of the device.

[0019] 2. For the safety door lifting device of this elevator, when lifting an object, the lifting motor is started to drive the wire winding roller to rotate inside the mounting bracket, thereby pulling the steel wire rope to rotate and retract along the driving roller, and then pulling the hanging basket at the bottom of the hanging ring connected to the hook at the bottom of the suspension arm to rise, thus completing the lifting of the object. While the hanging basket is rising, the chute is clamped outside the guide rail, so that the hanging basket rises smoothly along the guide rail, improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0021] Figure 2 It is of the present utility model Figure 1 The enlarged structural schematic diagram at A in;

[0022] Figure 3 It is of the present utility model Figure 1 The sectional structural schematic diagram at B in;

[0023] Figure 4 It is a bottom view structural schematic diagram of the present utility model after the extension basket extends out;

[0024] Figure 5This is a partial side view structural schematic diagram of the lifting device of the present utility model.

[0025] In the figure: 1, lift frame; 2, hanging basket; 301, electric telescopic rod; 302, extended basket; 303, safety door; 304, fixed block; 305, locking rod; 306, tension spring; 401, mounting bracket; 402, wire winding roller; 403, steel wire rope; 404, lifting motor; 405, driving roller; 406, suspension arm; 407, hook; 408, hanging ring; 409, guide rail; 410, chute. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0028] Embodiment 1:

[0029] A safety door lifting device for a lift, including a lift frame 1 and a hanging basket 2, the hanging basket 2 is slidably connected to the inside of the lift frame 1, and a lifting device is provided at the top of the lift frame 1.

[0030] The lifting device includes a lifting unit, a suspension unit and a guiding unit.

[0031] The lifting unit includes a mounting bracket 401, a wire winding roller 402, a steel wire rope 403, and a lifting motor 404. The mounting bracket 401 is installed at the top of the lift frame 1. The wire winding roller 402 is rotatably connected to the inside of the mounting bracket 401. The steel wire rope 403 is wound around the outer surface of the wire winding roller 402. The lifting motor 404 is installed on one side of the mounting bracket 401, and one end of the wire winding roller 402 is connected to the output end of the lifting motor 404.

[0032] The suspension unit includes a driving roller 405, a suspension arm 406, a hook 407, and a hanging loop 408. The two driving rollers 405 are respectively rotatably connected to the top of the elevator frame 1, and the steel wire rope 403 passes through the inside of the driving roller 405. The suspension arm 406 is fixedly connected to the bottom of the steel wire rope 403. The hook 407 is fixedly connected to the bottom of the suspension arm 406. The hanging loop 408 is fixedly connected to the center of the top of the hanging basket 2 and is suspended above the hook 407. When lifting an object, the lifting motor 404 is started to drive the wire winding roller 402 to rotate inside the mounting frame 401, thereby pulling the steel wire rope 403 to rotate and retract along the driving roller 405, and then pulling the hanging basket 2 at the bottom of the hanging loop 408 connected to the hook 407 at the bottom of the suspension arm 406 to rise, thus completing the lifting of the object.

[0033] The guiding unit includes guide rails 409 and sliding grooves 410. The four guide rails 409 are respectively fixedly connected to the inner walls of the columns of the elevator frame 1, and the four sliding grooves 410 are respectively opened at the four corners of the top of the hanging basket 2, and the sliding grooves 410 are clamped to the outside of the guide rails 409. While the hanging basket 2 is rising, the sliding grooves 410 are clamped to the outside of the guide rails 409, so that the hanging basket 2 rises smoothly along the guide rails 409, improving the stability of the device.

[0034] Embodiment 2:

[0035] On the basis of Embodiment 1, an extension device is arranged inside the hanging basket 2. The extension device includes an extension unit and a locking unit.

[0036] The extension unit includes electric telescopic rods 301, an extension basket 302, and a safety door 303. The two electric telescopic rods 301 are respectively installed on the left and right sides inside the bottom of the hanging basket 2. The extension basket 302 is fixedly connected to the front ends of the electric telescopic rods 301. The safety door 303 is installed on the right side of the front of the extension basket 302 through hinges.

[0037] A sliding bin is opened inside the bottom of the hanging basket 2. The electric telescopic rods 301 are arranged inside the sliding bin. The extension basket 302 is slidably connected to the inside of the sliding bin. When lifting and transporting larger objects, the electric telescopic rods 301 are driven to push the extension basket 302 to move out along the sliding bin, thereby expanding the area inside the hanging basket 2 and improving the applicable range of the device.

[0038] The locking unit includes a fixed block 304, a locking rod 305, and a tension spring 306. The fixed block 304 is fixedly connected to the top of one side of the safety door 303. The locking rod 305 is inserted into the middle of the top of the extension basket 302. The tension spring 306 is installed outside the locking rod 305.

[0039] A locking cavity is provided at the top of the front side of the extended basket 302. The fixing block 304 is slidably connected to the inside of the locking cavity. An insertion hole is provided in the middle of the top of the extended basket 302, and the insertion hole communicates with the locking cavity. The locking rod 305 is inserted into the inside of the insertion hole. A spring cavity is provided inside the insertion hole, and the tension spring 306 is installed inside the spring cavity.

[0040] After people and items enter the hanging basket 2, close the safety door 303. At the same time, pull up the locking rod 305 and compress the tension spring 306 inside the spring cavity. At the same time, the fixing block 304 is snapped into the inside of the locking cavity. Release the locking rod 305, and the tension spring 306 resets under its own elasticity, thereby pushing the locking rod 305 into the inside of the fixing block 304 to complete the locking of the safety door 303 and improve the construction safety.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A safety door lifting device for an elevator, comprising an elevator frame (1) and a hanging basket (2), wherein the hanging basket (2) is slidably connected to the interior of the elevator frame (1), characterized in that: An extension device is provided inside the hanging basket (2), and a lifting device is provided on the top of the elevator frame (1); The extending device comprises an extending unit and a locking unit; The extension unit comprises an electric telescopic rod (301), an extension basket (302), and a safety door (303); the two electric telescopic rods (301) are respectively installed on the left and right sides of the bottom of the hanging basket (2); the extension basket (302) is fixedly connected to the front end of the electric telescopic rod (301); and the safety door (303) is installed on the right side of the front of the extension basket (302) through a hinge.

2. The safety door lifting device for an elevator according to claim 1, characterized in that: A sliding compartment is provided inside the bottom of the hanging basket (2), the electric telescopic rod (301) is located inside the sliding compartment, and the extension basket (302) is slidably connected to the inside of the sliding compartment.

3. The safety door lifting device for an elevator according to claim 2, characterized in that: The locking unit comprises a fixing block (304), a locking rod (305), and a tension spring (306); the fixing block (304) is fixedly connected to the top of one side of the safety door (303); the locking rod (305) is inserted into the middle of the top of the extension basket (302); and the tension spring (306) is installed on the outside of the locking rod (305).

4. The safety door lifting device for an elevator according to claim 3, characterized in that: A locking cavity is provided at the top of the front side of the extension basket (302), the fixing block (304) is slidably connected to the interior of the locking cavity, a plug hole is provided at the middle of the top of the extension basket (302), and the plug hole is communicated with the locking cavity, the locking rod (305) is plugged into the interior of the plug hole, a spring cavity is provided inside the plug hole, and the tension spring (306) is installed inside the spring cavity.

5. The safety door lifting device for an elevator according to claim 1, characterized in that: The lifting device comprises a lifting unit, a suspension unit and a guide unit; The lifting unit comprises a mounting frame (401), a wire take-up roller (402), a steel wire rope (403), and a lifting motor (404); the mounting frame (401) is mounted on the top of the lifting machine frame (1); the wire take-up roller (402) is rotatably connected to the inside of the mounting frame (401); the steel wire rope (403) is wound around the outer surface of the wire take-up roller (402); the lifting motor (404) is mounted on one side of the mounting frame (401); and one end of the wire take-up roller (402) is connected to the output end of the lifting motor (404).

6. The safety door lifting device for an elevator according to claim 5, characterized in that: The suspension unit comprises a transmission roller (405), a suspension arm (406), a hook (407), and a hanging ring (408); the two transmission rollers (405) are respectively rotatably connected to the top of the elevator frame (1), and the steel wire rope (403) passes through the inside of the transmission roller (405); the suspension arm (406) is fixedly connected to the bottom of the steel wire rope (403); the hook (407) is fixedly connected to the bottom of the suspension arm (406); and the hanging ring (408) is fixedly connected to the top center of the hanging basket (2) and is suspended on the hook (407).

7. The safety door lifting device for an elevator according to claim 6, characterized in that: The guide unit includes a guide rail (409) and a slide groove (410), wherein the four guide rails (409) are respectively fixedly connected to the inner wall of the pillar of the elevator frame (1), and the four slide grooves (410) are respectively opened at the top four corners of the hanging basket (2), and the slide grooves (410) are clamped on the outside of the guide rails (409).

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