A structure of a car-frameless column elevator

Abstract

The present application relates to a kind of no cage column elevator structure, belong to elevator technical field, including the projection of setting three side plate outer wall and anti-falling mechanism, anti-falling mechanism includes several plane tripartite, several plane tripartite are three groups and three groups of plane tripartite are vertically set on the elevator shaft side wall corresponding with three side plates, the side wall of elevator shaft above each plane tripartite is provided with a limiting portion, when elevator traction system appears problem, or other reasons lead to elevator car drop, at this time under the action of gravity of car, it will descend at faster speed than normal descending speed, at this time due to the intermittent back-and-forth rotation of two sides of plane tripartite to reset needs certain time difference, at this time elevator car cannot descend, and the structure here is sensitive, there is no misoperation, not only need safety tongs and speed reducer complex cooperation, and simple structure, solve the existence of no cage, increase the risk of elevator drop.

Description

Technical Field

[0001] This invention belongs to the field of elevator technology, specifically relating to an elevator structure without a car frame or column. Background Technology

[0002] An elevator is a vertical lifting machine powered by an electric motor. It is usually equipped with a car, which consists of three side panels, a top panel, a bottom panel, and an openable elevator door. The top wall of the car is suspended from the traction sheave by steel wire ropes, which drives the car to move up and down. Therefore, during the installation of the elevator car, the car frame is usually installed as the main load-bearing structure. The car frame is composed of components such as columns, lower beams, upper beams, and diagonal braces. Although this structure is widely used, the presence of the car frame occupies a considerable amount of elevator shaft space, making it difficult to increase the width dimension of the car. It also increases material and labor costs and makes installation and transportation inconvenient.

[0003] For example, the utility model patent with authorization announcement number CN 217376936 U discloses "a car structure for a home elevator without a car frame". By providing multiple first reinforcing ribs arranged along the width of the car and multiple second reinforcing ribs arranged along the depth of the car at the bottom of the base plate, and vertical third reinforcing ribs on the outer sides of the left and right side plates, the third reinforcing ribs are located in the middle of the car. Two sets of rope pulley assemblies are provided below the base plate. It has the advantage of being able to be installed in the elevator without a car frame, which can effectively improve the width dimension of the car and improve the comfort of the car.

[0004] However, there are some problems with the above-mentioned patent: From the perspective of the overall user experience of the frameless elevator car, the above-mentioned patent provides a guide rail that cooperates with the safety clamp on the outside of the third reinforcing rib. When the elevator is moving up and down at a constant speed, the safety clamp can slide along the guide rail at a constant speed. When the elevator falls at high speed due to an accident, the safety clamp can prevent the fall. However, when the safety clamp is in use, there is a risk that foreign objects may enter and cause malfunctions, or the safety clamp itself may also malfunction, thus bringing a bad user experience. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this invention provides a column-free elevator structure, which solves the problem that while safety clamps are used to prevent falls, there is a risk of foreign objects entering and causing malfunctions, or the safety clamps themselves may also fail, thus leading to a poor user experience.

[0006] The objective of this invention can be achieved through the following technical solution: a column-free elevator structure, comprising a protrusion on the outer wall of the car, a blocking rod on the side wall of the elevator shaft, and a planar three-pronged mechanism. The planar three-pronged mechanism includes a connecting rod portion and a branch portion. The connecting rod portion is located at the branching point of the branch portion, and the branching point is mounted on the side wall of the elevator shaft by a torsion spring. The connecting rod portion is limited by the blocking rod. The car moves up and down at a constant speed, causing the protrusion and the branch portion to fit together. The car falls at high speed, causing the upper part of the protrusion and the branch portion to engage.

[0007] As a further aspect of the present invention, the distance from the lower part of the forked portion to the car is greater than the thickness of the protrusion, and the distance from the upper part of the forked portion to the car is less than the thickness of the protrusion.

[0008] As a further embodiment of the present invention, the protrusion is a right trapezoid, and the hypotenuse of the right trapezoid is a first arc structure, and the intersection of the two right-angled sides of the right trapezoid is a second arc structure.

[0009] As a further embodiment of the present invention, the head of the upper part of the forked portion is a third arc-shaped structure that cooperates with the first arc-shaped structure, and the head of the lower part of the forked portion is a fourth arc-shaped structure that cooperates with the second arc-shaped structure.

[0010] As a further embodiment of the present invention, guide rails are provided on the side walls of the elevator shaft, and guide blocks that cooperate with the guide rails are provided on the car on the protruding side.

[0011] As a further embodiment of the present invention, the car is externally connected to a stabilizing mechanism to prevent the car from swaying up and down. The stabilizing mechanism includes a rotating cylinder and a clamping assembly sleeved on the rotating cylinder. The rotating cylinder is driven to rotate by a slide rod provided on the car, and the elevator door drive clamping assembly limits the rotation of the rotating cylinder.

[0012] As a further embodiment of the present invention, the rotating cylinder is provided with a spiral groove communicating with the interior of the rotating cylinder, and the slide rod passes vertically through the spiral groove.

[0013] As a further embodiment of the present invention, the clamping assembly includes a plurality of ring-shaped clamping blocks, each of the ring-shaped clamping blocks being connected to each other by a connecting rod, and each of the ring-shaped clamping blocks being rotatably connected to the car, wherein one of the clamping blocks is connected to the elevator door and is driven to rotate by the elevator door.

[0014] As a further embodiment of the present invention, a protective pad is provided at the contact point between the clamping block and the rotating cylinder.

[0015] The beneficial effects of this invention are as follows:

[0016] The elevator car moves at a constant speed through the protrusions on the three side panels of the outer wall. When the car begins to fall, its speed increases, and the torsion spring has not yet had time to rebound. This causes the protrusions and the upper part of the fork to engage. At the same time, the fork causes the connecting rod and the stop bar to engage. At this point, the fork and the connecting rod together fix and support the elevator, preventing it from falling further. This solves the problem of using a safety clamp to prevent falling. However, when using a safety clamp, there is a risk that foreign objects may enter and cause malfunctions, or the safety clamp itself may also malfunction, resulting in a poor user experience. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the installation of the elevator car and elevator shaft according to the present invention;

[0019] Figure 2 This is a schematic diagram of the protrusion mounting of the present invention;

[0020] Figure 3 This is a schematic diagram of the planar three-pronged mechanism structure of the present invention;

[0021] Figure 4 This is a schematic diagram showing the cooperation between the protrusion and the anti-fall mechanism when the car falls according to the present invention;

[0022] Figure 5 This is a schematic diagram of the guide block installation according to the present invention;

[0023] Figure 6 This is a schematic diagram of the slide bar installation according to the present invention;

[0024] Figure 7 This is a schematic diagram of the clamping component structure of the present invention.

[0025] Explanation of key component symbols:

[0026] In the diagram: 1. Protrusion; 2. Planar three-pronged mechanism; 21. Connecting rod; 22. Forked part; 23. Blocking rod; 3. Car; 31. Guide block; 4. Elevator shaft; 41. Guide rail; 42. Slide rod; 5. Rotating cylinder; 51. Spiral groove; 6. Clamping assembly; 61. Clamping block; 62. Connecting rod. Detailed Implementation

[0027] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0028] Please see Figure 1-7This embodiment provides a column-free elevator structure, including protrusions 1 on the outer wall of the car, blocking bars 23 on the side wall of the elevator shaft, and planar three-pronged mechanisms 2. Protrusions 1 are installed on all three side plates of the car, with a certain number of protrusions 1 on each side plate. Several planar three-pronged mechanisms 2 are installed along the side wall of the elevator shaft from top to bottom. Each planar three-pronged mechanism 2 corresponds to one blocking bar 23, therefore the number of blocking bars 23 is also several, corresponding to the number of planar three-pronged mechanisms 2. The planar three-pronged mechanism 2 includes a connecting rod portion 21 and a branch portion 22, which are fixedly connected. The connecting rod portion 21 is located at the branching point of the branch portion 22, and the branching point is secured to the side wall of the elevator shaft by a torsion spring. The purpose of the torsion spring is to... There is a time difference between the movement and reset of the connecting rod 21 and the forked part 22, because the spring needs time to rebound. The connecting rod 21 is limited by the blocking rod 23. When the car is moving up and down at a constant speed, the protrusion 1 and the forked part 22 are in contact, and the protrusion 1 passes through the forked part 22 at a constant speed. When the car falls, the speed increases. At this time, the high-speed fall makes the car fall faster, so that the torsion spring has not had time to rebound. Therefore, the upper part of the protrusion 1 and the forked part 22 are locked, so that the elevator can not continue to fall. During this process, it is necessary to ensure that the distance between the several protrusions 1 on each side plate of the car is small and cannot be too large. The specific size of this distance is determined according to the rebound time of the torsion spring. The car here is controlled by the traction system to make the car rise and fall by controlling the traction sheave.

[0029] Currently, elevator cars 3 are typically installed with the car frame as the main load-bearing structure. However, the presence of the car frame occupies a considerable portion of the elevator shaft space 4, making it difficult to increase the width dimension of the car 3. This also increases material and labor costs and makes installation and transportation inconvenient. Therefore, car frameless elevators have emerged. Car frameless elevators can effectively increase the width dimension of the car 3 and improve the comfort of the car 3. From the perspective of the overall user experience of the car frameless elevator, the aforementioned patent provides a guide rail that cooperates with the safety clamp on the outside of the third reinforcing rib. When the elevator is moving at a constant speed, the safety clamp can slide at a constant speed along the guide rail. When the elevator falls at high speed due to an accident, the safety clamp can prevent the fall. However, when the safety clamp is in use, there is a risk that foreign objects may enter, causing malfunction or that the safety clamp itself may also malfunction, thus bringing a poor user experience.

[0030] To provide a better user experience and improve safety, avoiding the risk of elevators falling when using safety clamps, in this embodiment, during normal operation of the elevator car 3, the traction system controls the traction sheave to drive the elevator car 3 up and down along the elevator shaft 4 at a constant speed. At this time, the protrusions 1 on the outer walls of the three side panels of the car 3 pass through the bifurcation 22 at a uniform speed. When the car falls, the speed increases. At this high speed, the torsion spring has not yet had time to rebound, thus causing the protrusions 1 and bifurcation 22 to... The upper part of 2 engages, and at the same time, the forked part 22 drives the connecting rod part 21 and the blocking rod 23 to engage. At this time, the forked part 22 and the connecting rod part 21 together fix and support the elevator, preventing the elevator from falling further. Since the planar three-pronged mechanism 2 is set on the side wall of the elevator shaft from top to bottom, and the distance between the several protrusions 1 on each side plate of the car is small, even if the elevator falls, it will only fall a very small distance before it stops falling, which increases safety and avoids an excessively bad user experience when the elevator falls.

[0031] To ensure that the bifurcation 22 does not interfere with the protrusion 1 on the side wall of the car when the car is moving at a uniform speed, in one embodiment, the distance from the lower part of the bifurcation 22 to the car is greater than the thickness of the protrusion 1. This is because when the car moves upward, the protrusion 1 must enter the bifurcation 22 first when the car passes through the bifurcation 22. The distance from the upper part of the bifurcation 22 to the car is less than the thickness of the protrusion 1. This is to ensure that when the protrusion 1 leaves the sliding part after entering the bifurcation 22, the bifurcation 22 can still function and make contact with the protrusion 1.

[0032] To ensure that the protrusion 1 is not obstructed when passing through the bifurcation when the elevator car 3 is rising and falling at a uniform speed, and to ensure that the protrusion 1 on the car 3 can lock into the upper part of the bifurcation when the elevator car 3 is falling, in one embodiment, the protrusion 1 is a right-angled trapezoid with the hypotenuse of the trapezoid being a first arc structure. The purpose of using a right-angled trapezoid is twofold: first, to ensure that the protrusion 1 passes smoothly through the bifurcation 22 and only touches the bifurcation when passing through it; second, to ensure that when the elevator car 3 is falling, the lower right-angled side of the right-angled trapezoid can lock into the upper part of the bifurcation. The intersection of the two right-angled sides of the right-angled trapezoid is a second arc structure, which is to ensure that the protrusion 1 can pass smoothly through the bifurcation 22 when the elevator car 3 is rising, while the hypotenuse of the right-angled trapezoid is a first arc structure, which is to ensure that the bifurcation 22 will not interfere with the protrusion 1.

[0033] To further reduce friction between the forked portion 22 and the protrusion 1 during movement, in one embodiment, the head of the upper part of the forked portion 22 is a third arc-shaped structure that cooperates with the first arc-shaped structure, and the head of the lower part of the forked portion 22 is a fourth arc-shaped structure that cooperates with the second arc-shaped structure. Since the heads of both the upper and lower parts of the forked portion 22 are arc-shaped structures and the arc-shaped structures are smooth, the friction between the protrusion 1 and the forked portion 22 is reduced, ensuring that the elevator can move up and down more effectively.

[0034] To ensure smoother elevator car 3 movement without horizontal swaying and provide a better user experience, in one embodiment, guide rails 41 are provided on the side walls of the elevator shaft, and guide blocks 31 that cooperate with the guide rails 41 are provided on the raised side of the car. The purpose of the guide rails 41 and guide blocks 31 is to make the elevator car 3 move more smoothly and prevent horizontal swaying. To reduce friction between the elevator car 3 and the guide rails 41, rollers are installed on the guide blocks 31, and the rollers slide within the guide rails 41. This reduces friction between the elevator car 3 and the guide rails 41 and also reduces the work done by the traction sheave, thus reducing the frequency of traction sheave and traction system failures.

[0035] To ensure that the elevator car 3 does not sway horizontally, it is also necessary to ensure that when the elevator car 3 stops and the elevator door opens, and someone enters the car 3, the elevator car 3 does not sway vertically. This is because some elevators currently use a traction sheave connected to the car 3 via a traction rope, which inevitably causes vertical swaying during passenger movement, leading to dizziness and discomfort. In one embodiment, a stabilizing mechanism is connected externally to the car 3 to prevent vertical swaying. This stabilizing mechanism includes a rotating cylinder 5 and a clamping assembly 6 sleeved on the rotating cylinder 5. The rotating cylinder 5 is driven to rotate by a sliding rod 42 mounted on the car 3. The drive clamping assembly 6 limits the rotation cylinder 5. The clamping assembly 6 clamps the rotation cylinder 5 by opening and closing the elevator door. When the rotation cylinder 5 does not rotate, the car 3 will not fall. One end of the rotation cylinder 5 is rotatably connected to the bottom of the elevator shaft 4, and the other end is rotatably connected to the top of the elevator shaft 4. In actual use, when the elevator car 3 rises or falls, the car 3 drives the slide rod 42 to move up and down, and the slide rod 42 drives the rotation cylinder 5 to rotate. When the car 3 reaches the door opening position, the elevator door opens, and the elevator door drives the clamping assembly 6 to clamp the rotation cylinder 5, so that the rotation cylinder 5 cannot rotate. At this time, when people get on and off in the car 3, the slide rod 42 cannot move up and down, so the car 3 will not move in the vertical direction.

[0036] To better ensure that when the car 3 rises and falls, the slide rod 42 drives the rotating cylinder 5 to rotate. When the rotating cylinder 5 is stationary, the car 3 will not move vertically. In one embodiment, the rotating cylinder 5 is provided with a spiral groove 51 that communicates with the interior of the rotating cylinder 5. The slide rod 42 passes vertically through the spiral groove 51, and the spiral groove 51 is exactly matched with the diameter of the slide rod 42. This ensures that when the spiral groove 51 is stationary, the slide rod 42 cannot move vertically. This achieves the goal that when the car 3 rises and falls, the slide rod 42 drives the rotating cylinder 5 to rotate, and when the rotating cylinder 5 is stationary, the car 3 will not move vertically.

[0037] To better fix the rotating cylinder 5 in place, in one embodiment, the clamping assembly 6 includes several ring-shaped clamping blocks 61. Each pair of ring-shaped clamping blocks 61 is connected by a connecting rod 62. All ring-shaped clamping blocks 61 are rotatably connected to the car 3. One clamping block 61 is connected to the elevator door via a drive mechanism, and its rotation is driven by the elevator door. Here, there are four ring-shaped clamping blocks 61, all of which are rotatably connected to the bottom of the car 3 via shafts. A clamping block 61 is connected to the elevator door via a gear and rack transmission. Specifically, a gear is fixedly mounted on the shaft of one of the clamping blocks 61, while a rack is connected to the bottom of the elevator door. When the elevator door opens, it drives the rack, which in turn drives the gear to rotate. The gear causes one of the clamping blocks 61 to rotate. Under the action of the connecting rod 62, this causes the other three clamping blocks 61 to rotate together, thus causing the four clamping blocks 61 to fit tightly against the side wall of the rotating sleeve, thereby clamping and fixing the rotating sleeve in place. Figure 6 As shown, the four clamping blocks 61 in the above process are triangular clamping blocks 61. Two vertices of the triangle are hinged to two adjacent connecting rods 62 respectively, and the other vertex of the triangle can fit with the rotating sleeve. The other vertex of the triangle is a smooth arc, which makes the clamping block 61 have a larger force-bearing area when clamping the rotating sleeve, and the clamping is more stable.

[0038] To better increase the stability of the clamping block 61 in clamping the rotating cylinder 5 without damaging it, in one embodiment, a protective pad is installed at the contact point between the clamping block 61 and the rotating cylinder 5. This protective pad is a rubber pad. The advantages of using a rubber pad are: first, the friction is greater than that of directly contacting the clamping block 61 with the rotating cylinder 5, because rubber itself is a material with high friction strength; second, it avoids the clamping block 61 clamping the rotating cylinder 5 too tightly, thus increasing the service life of both the clamping block 61 and the rotating cylinder 5.

[0039] Working principle and usage process of this invention:

[0040] The protrusions 1 on the outer walls of the three side panels of the car 3 pass through the bifurcation 22 at a constant speed. When the car falls, the speed increases. At this time, the high-speed fall accelerates the fall of the car. Before the torsion spring can rebound, the protrusions 1 and the upper part of the bifurcation 22 are engaged. At the same time, the bifurcation 22 drives the connecting rod 21 and the blocking rod 23 to fit together. At this time, the bifurcation 22 and the connecting rod 21 together fix and support the elevator, so that the elevator cannot continue to fall.

[0041] When the elevator car 3 reaches the open position, the elevator door opens, causing the rack and pinion to move. The rack and pinion then rotate the gear, causing one of the clamping blocks 61 to rotate. Under the action of the connecting rod 62, one of the clamping blocks 61 drives the other three clamping blocks 61 to rotate together, thereby making the four clamping blocks 61 fit and press against the side wall of the rotating sleeve, thus clamping and fixing the rotating sleeve. When the elevator door closes, the rotating sleeve disengages, completing the entire working process. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A column-free elevator structure, characterized in that, The system includes a protrusion on the outer wall of the car, a blocking bar on the side wall of the elevator shaft, and a planar three-pronged mechanism. The planar three-pronged mechanism includes a connecting rod and a forked part. The connecting rod is located at the forked point of the forked part, and the forked point is mounted on the side wall of the elevator shaft by a torsion spring. The connecting rod is limited by the blocking bar. The car moves up and down at a constant speed, causing the protrusion and the forked part to fit together. The car falls at a high speed, causing the upper part of the protrusion and the forked part to engage. The elevator car is connected to a stabilizing mechanism to prevent the car from swaying up and down. The stabilizing mechanism includes a rotating cylinder and a clamping assembly sleeved on the rotating cylinder. The rotating cylinder is driven to rotate by a slide rod set on the car. The elevator door drives the clamping assembly to limit the rotation of the rotating cylinder. The clamping assembly includes several ring-shaped clamping blocks, each ring-shaped clamping block is connected to the other two by a connecting rod, and each ring-shaped clamping block is rotatably connected to the car. One of the clamping blocks is connected to the elevator door and is driven to rotate by the elevator door.

2. The column-free elevator structure according to claim 1, characterized in that, The distance from the lower part of the fork to the car is greater than the thickness of the protrusion, and the distance from the upper part of the fork to the car is less than the thickness of the protrusion.

3. The column-free elevator structure according to claim 2, characterized in that, The protrusion is a right trapezoid, with the hypotenuse of the right trapezoid forming a first arc shape and the intersection of the two right-angled sides forming a second arc shape.

4. The column-free elevator structure according to claim 3, characterized in that, The head of the upper part of the forked portion is a third arc-shaped structure that cooperates with the first arc-shaped structure, and the head of the lower part of the forked portion is a fourth arc-shaped structure that cooperates with the second arc-shaped structure.

5. The column-free elevator structure according to claim 1, characterized in that, Guide rails are provided on the side walls of the elevator shaft, and guide blocks that cooperate with the guide rails are provided on the raised side of the car.

6. The column-free elevator structure according to claim 1, characterized in that, The rotating cylinder has a spiral groove that communicates with the inside of the rotating cylinder, and the slide rod passes vertically through the spiral groove.

7. The column-free elevator structure according to claim 1, characterized in that, A protective pad is provided at the contact point between the clamping block and the rotating cylinder.

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