Roller stall protection device and method of protection

Abstract

This invention discloses a roller stall protection device and method, relating to the field of roller stall protection technology, particularly the field of roller stall protection technology for stairwell elevators. The roller stall protection device includes a roller mounting plate, a roller, a speed sensor, a brake block, and an electric telescopic mechanism. The roller is mounted on the roller mounting plate, the speed sensor is fixed to the roller mounting plate via a sensor bracket, and the electric telescopic mechanism is fixed to the roller mounting plate via a slide rail bracket. During normal roller operation, a gap exists between the brake block and the roller, preventing the brake block from obstructing the roller's smooth operation. When the stairwell elevator descends, if the roller speed exceeds the set speed due to chain breakage, motor malfunction, or other reasons, the control system issues a command based on the speed sensor's collected signal, causing the electric telescopic mechanism to push the brake block closer to the roller. When the brake block contacts the roller, the roller's rotation drives the brake block forward, achieving frictional deceleration or stopping the rotation. This invention can accurately monitor the roller's speed and promptly decelerate or stop the rotation when the roller speed exceeds the set value, preventing injury to personnel or objects.

Description

Technical Field

[0001] This invention relates to a roller stall protection device and its protection method. Background Technology

[0002] Installing elevators in multi-story residential buildings or self-built houses presents a series of challenges, including complex approval procedures, difficulty in obtaining approval for the land area occupied by the shaft, high renovation costs, long construction periods, uneven benefits for low-rise and high-rise residents leading to disagreements, impact on lighting and ventilation for low-rise residents, and even conflicts with existing building codes. These challenges make implementation difficult.

[0003] A more reasonable existing solution is to install multiple elevators close to the walls or railings in the stairwell, solving the problem of residents' difficulty in going up and down stairs without affecting the normal use of the stairwell. For example, patent document No. 202610444506.4 discloses a stairwell elevator and its safety protection device. This patent's shoe block locking assembly can prevent the rollers from accelerating downwards, avoiding injury to people or objects. However, it requires setting different weights of counterweights to achieve different speed settings, making operation not very convenient or precise. Summary of the Invention

[0004] In order to improve the above-mentioned technical problems, the purpose of this invention is to provide a roller stall protection device and its protection method, which can accurately monitor the rotation speed of the roller and promptly decelerate or stop the rotation when the rotation speed of the roller exceeds the set value, so as to avoid injury to personnel or objects.

[0005] The roller stall protection device includes a roller fixing plate (1), a roller (2), a speed sensor (3), a brake block (7), and an electric telescopic mechanism (4). When the roller (2) is running normally, there is a gap between the brake block (7) and the roller (2), and the brake block (7) will not obstruct the normal rotation of the roller (2). When the elevator descends, if the speed of the roller (2) exceeds the set speed due to chain breakage, motor abnormality, etc., the control unit will issue a command after comparing the collected signal of the speed sensor (3) with the set maximum speed of the roller, and the electric telescopic mechanism (4) will push the brake block (7) closer to the roller (2). When the brake block (7) is in contact with the roller (2), the rotation of the roller (2) will drive the brake block (7) forward to achieve frictional deceleration or stop rotation.

[0006] The roller fixing plate (1) is provided with a roller connecting hole (1.1), a slide seat bracket connecting hole (1.2) and a sensor bracket connecting hole (1.3). The roller connecting hole (1.1) is used to fix the roller (1); the slide seat bracket connecting hole (1.2) is used to fix the slide seat bracket (8), and the sensor bracket connecting hole (1.3) is used to fix the sensor bracket (5).

[0007] When the inclined surface (7.1) of the brake block (7) has a gap with the roller (7), it will not hinder the normal rotation of the roller (2). When the inclined surface (7.1) of the brake block (7) is in contact with the top surface of the roller (7), frictional deceleration or braking of the roller can be achieved. The slide rail (7.2) and the slide seat (6) are used together to fix the brake block (7) and guide its movement direction. The brake block connecting hole (7.3) is used to connect with the electric telescopic mechanism (4).

[0008] The electric telescopic mechanism (4) is preferably fixed on the slide seat bracket (8), or it can be directly fixed on the roller fixing plate (1). The electric telescopic mechanism (4) has two states: when the roller (2) rotates normally, the electric telescopic mechanism (4) is in the retracted state; when the speed of the roller (2) exceeds the set speed, the electric telescopic mechanism (4) is in the extended state. The electric telescopic mechanism (4) preferably adopts a push-pull electromagnet. When the roller (2) rotates normally, the electromagnet is attracted, and the electric telescopic mechanism (4) is in the retracted state. When the speed of the roller (2) exceeds the set speed, the electromagnet is no longer attracted, and the electric telescopic mechanism (4) is in the extended state under the action of the spring. The electric telescopic mechanism (4) can also adopt the structure of electric push rod or lead screw nut to achieve the two states of extension and retraction.

[0009] The slide seat (6) is provided with a slide seat connection hole (6.1) and a slide groove (6.2). The slide seat (6) is preferably fixed to the slide seat bracket (8) through the slide seat connection hole (6.1), or it can be directly fixed to the roller fixing plate (1) or the slide seat bracket (8) by welding. The slide groove (6.2) is used in conjunction with the slide rail (7.2) for fixing the brake block (7) and guiding its movement direction. The mating cross section of the slide groove (6.2) and the slide rail (7.2) is not limited to the dovetail groove form shown in the figure. Other cross section shapes such as C-type, O-type, D-type or T-type are also within the scope of the claims.

[0010] The slide seat bracket (8) is provided with a bracket fixing hole (8.1), a slide seat connecting hole (8.2), and an electric telescopic mechanism connecting hole (8.3). The slide seat bracket (8) is preferably fixed to the roller fixing plate (1) through the bracket fixing hole (8.1), or it can be directly fixed to the roller fixing plate (1) by welding. The slide seat connecting hole (8.2) is used to fix the slide seat (6). The electric telescopic mechanism connecting hole (8.3) is used to fix the electric telescopic mechanism (4).

[0011] The protection method of the roller stall protection device includes the following steps: S1: The control unit sets the maximum speed of the roller, the speed sensor (3) is turned on, and the electric telescopic mechanism (4) is in the retracted state; S2: Compare the roller speed measured by the speed sensor (3) with the maximum roller speed set by the control unit; S3: If the comparison is normal, repeat S2; if the comparison result shows that the roller (2) stalls, proceed to S4. S4: The electric telescopic mechanism (4) extends, and the roller (2) slows down or stops rotating. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the roller stall protection device when the roller is rotating normally.

[0014] Figure 2 This is a schematic diagram of the roller stall protection device during roller braking.

[0015] Figure 3 This is a structural diagram of the roller fixing plate.

[0016] Figure 4 This is a schematic diagram of the slide seat structure.

[0017] Figure 5 This is a schematic diagram of the brake block structure.

[0018] Figure 6 This is a structural schematic diagram of the slide seat support.

[0019] Figure 7 This is a schematic diagram of the circuit flow for the roller stall protection device.

[0020] Figure 8 This is a flowchart of the protection method for the roller stall protection device.

[0021] Explanation of reference numerals in the attached drawings: 1-Roller fixing plate; 2-Roller; 3-Speed ​​sensor; 4-Electric telescopic mechanism; 5-Sensor bracket; 6-Slide seat; 7-Brake block; 8-Slide seat bracket; 1.1-Roller connecting hole; 1.2-Slide seat bracket connecting hole; 1.3-Sensor bracket connecting hole; 6.1-Slide seat connecting hole; 6.2-Slide track; 7.1-Inclined surface; 7.2-Slide rail; 7.3-Brake block connecting hole; 8.1-Bracket fixing hole; 8.2-Slide seat connecting hole; 8.3-Electric telescopic mechanism connecting hole. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings: See Figure 1-8The roller stall protection device of the present invention includes a roller fixing plate (1), a roller (2), a speed sensor (3), a brake block (7), and an electric telescopic mechanism (4). When the roller (2) is running normally, there is a gap between the brake block (7) and the roller (2), and the brake block (7) will not obstruct the normal rotation of the roller (2). When the elevator descends, if the speed of the roller (2) exceeds the set speed due to chain breakage, motor abnormality, etc., the control unit will issue a command after comparing the collected signal of the speed sensor (3) with the set maximum speed of the roller, and the electric telescopic mechanism (4) will push the brake block (7) closer to the roller (2). When the brake block (7) is in contact with the roller (2), the rotation of the roller (2) will drive the brake block (7) forward to achieve frictional deceleration or stop rotation.

[0023] The roller fixing plate (1) is provided with a roller connecting hole (1.1), a slide seat bracket connecting hole (1.2) and a sensor bracket connecting hole (1.3). The roller connecting hole (1.1) is used to fix the roller (1); the slide seat bracket connecting hole (1.2) is used to fix the slide seat bracket (8), and the sensor bracket connecting hole (1.3) is used to fix the sensor bracket (5).

[0024] The brake block (7) has an inclined surface (7.1), a slide rail (7.2), and a brake block connecting hole (7.3). When the inclined surface (7.1) of the brake block (7) leaves a gap with the roller (7), it will not hinder the normal rotation of the roller (2). When the inclined surface (7.1) of the brake block (7) is in contact with the top surface of the roller (7), frictional deceleration or braking of the roller can be achieved. The slide rail (7.2) and the slide seat (6) are used together to fix the brake block (7) and guide its movement direction. The brake block connecting hole (7.3) is used to connect with the electric telescopic mechanism (4).

[0025] The electric telescopic mechanism (4) is preferably fixed on the slide seat bracket (8), or it can be directly fixed on the roller fixing plate (1). The electric telescopic mechanism (4) has two states: when the roller (2) rotates normally, the electric telescopic mechanism (4) is in the retracted state; when the speed of the roller (2) exceeds the set speed, the electric telescopic mechanism (4) is in the extended state. The electric telescopic mechanism (4) preferably adopts a push-pull electromagnet. When the roller (2) rotates normally, the electromagnet is attracted, and the electric telescopic mechanism (4) is in the retracted state. When the speed of the roller (2) exceeds the set speed, the electromagnet is no longer attracted, and the electric telescopic mechanism (4) is in the extended state under the action of the spring. The electric telescopic mechanism (4) can also adopt the structure of electric push rod or lead screw nut to achieve the two states of extension and retraction.

[0026] The slide seat (6) is provided with a slide seat connection hole (6.1) and a slide groove (6.2). The slide seat (6) is preferably fixed to the slide seat bracket (8) through the slide seat connection hole (6.1), or it can be directly fixed to the roller fixing plate (1) or the slide seat bracket (8) by welding. The slide groove (6.2) is used in conjunction with the slide rail (7.2) for fixing the brake block (7) and guiding its movement direction. The mating cross section of the slide groove (6.2) and the slide rail (7.2) is not limited to the dovetail groove form shown in the figure. Other cross section shapes such as C-type, O-type, D-type or T-type are also within the scope of the claims.

[0027] The slide seat bracket (8) is provided with a bracket fixing hole (8.1), a slide seat connecting hole (8.2), and an electric telescopic mechanism connecting hole (8.3). The slide seat bracket (8) is preferably fixed to the roller fixing plate (1) through the bracket fixing hole (8.1), or it can be directly fixed to the roller fixing plate (1) by welding. The slide seat connecting hole (8.2) is used to fix the slide seat (6). The electric telescopic mechanism connecting hole (8.3) is used to fix the electric telescopic mechanism (4).

[0028] The protection method of the roller stall protection device includes the following steps: S1: The control unit sets the maximum speed of the roller, the speed sensor (3) is turned on, and the electric telescopic mechanism (4) is in the retracted state; S2: Compare the roller speed measured by the speed sensor (3) with the maximum roller speed set by the control unit; S3: If the comparison is normal, repeat S2; if the comparison result shows that the roller (2) stalls, proceed to S4. S4: The electric telescopic mechanism (4) extends, and the roller (2) slows down or stops rotating.

[0029] Furthermore, the above description, as a preferred embodiment of the present invention, is not strictly limited to the present invention. Any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A roller stall protection device, comprising a roller fixing plate (1), a roller (2), a speed sensor (3), a brake block (7), and an electric telescopic mechanism (4). Its characteristic is that... When the roller (2) is running normally, there is a gap between the brake block (7) and the roller (2), and the brake block (7) will not obstruct the normal rotation of the roller (2). When the elevator descends, if the roller (2) speed exceeds the set speed due to chain breakage, motor abnormality, etc., the control unit will issue a command after comparing the collected signal of the speed sensor (3) with the set maximum speed of the roller, and the electric telescopic mechanism (4) will push the brake block (7) closer to the roller (2). When the brake block (7) is in contact with the roller (2), the rotation of the roller (2) will drive the brake block (7) forward to achieve frictional deceleration or stop rotation.

2. The roller fixing plate (1) according to claim 1, characterized in that, The roller fixing plate (1) is provided with a roller connecting hole (1.1), a slide seat bracket connecting hole (1.2) and a sensor bracket connecting hole (1.3). The roller connecting hole (1.1) is used to fix the roller (1); the slide seat bracket connecting hole (1.2) is used to fix the slide seat bracket (8), and the sensor bracket connecting hole (1.3) is used to fix the sensor bracket (5).

3. The brake block (7) according to claim 1, characterized in that, The brake block (7) is provided with an inclined surface (7.1), a slide rail (7.2), and a brake block connecting hole (7.3). When the inclined surface (7.1) of the brake block (7) leaves a gap with the roller (7), it will not hinder the normal rotation of the roller (2). When the inclined surface (7.1) of the brake block (7) is in contact with the top surface of the roller (7), frictional deceleration or braking of the roller can be achieved. The slide rail (7.2) and the slide seat (6) are used together to fix the brake block (7) and guide its movement direction. The brake block connecting hole (7.3) is used to connect with the electric telescopic mechanism (4).

4. The electric telescopic mechanism (4) according to claim 1, characterized in that, The electric telescopic mechanism (4) is preferably fixed on the slide seat bracket (8), or it can be directly fixed on the roller fixing plate (1). The electric telescopic mechanism (4) has two states: when the roller (2) rotates normally, the electric telescopic mechanism (4) is in the retracted state; when the roller (2) rotates at a speed exceeding the set speed, the electric telescopic mechanism (4) is in the extended state. The electric telescopic mechanism (4) preferably adopts a push-pull electromagnet. When the roller (2) rotates normally, the electromagnet is attracted, and the electric telescopic mechanism (4) is in the retracted state. When the roller (2) rotates at a speed exceeding the set speed, the electromagnet is no longer attracted, and the electric telescopic mechanism (4) is in the extended state under the action of the spring. The electric telescopic mechanism (4) can also adopt a structure such as an electric push rod or a lead screw nut to achieve the two states of extension and retraction.

5. The slide seat (6) according to claim 3, characterized in that, The slide seat (6) is provided with a slide seat connection hole (6.1) and a slide groove (6.2). The slide seat (6) is preferably fixed to the slide seat bracket (8) through the slide seat connection hole (6.1), or it can be directly fixed to the roller fixing plate (1) or the slide seat bracket (8) by welding. The slide groove (6.2) is used in conjunction with the slide rail (7.2) for fixing the brake block (7) and guiding its movement direction. The mating cross section of the slide groove (6.2) and the slide rail (7.2) is not limited to the dovetail groove form shown in the figure. Other cross section shapes such as C-type, O-type, D-type or T-type are also within the scope of the claims.

6. The slide seat bracket (8) according to claim 4, characterized in that, The slide seat bracket (8) is provided with a bracket fixing hole (8.1), a slide seat connecting hole (8.2), and an electric telescopic mechanism connecting hole (8.3). The slide seat bracket (8) is preferably fixed to the roller fixing plate (1) through the bracket fixing hole (8.1), or it can be directly fixed to the roller fixing plate (1) by welding. The slide seat connecting hole (8.2) is used to fix the slide seat (6). The electric telescopic mechanism connecting hole (8.3) is used to fix the electric telescopic mechanism (4).

7. A protection method for a roller stall protection device according to claims 1-7, characterized in that, Includes the following steps: S1: The control unit sets the maximum speed of the roller, the speed sensor (3) is turned on, and the electric telescopic mechanism (4) is in the retracted state; S2: Compare the roller speed measured by the speed sensor (3) with the maximum roller speed set by the control unit; S3: If the comparison is normal, repeat S2; if the comparison result shows that the roller (2) stalls, proceed to S4. S4: The electric telescopic mechanism (4) extends, and the roller (2) slows down or stops rotating.

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