Elevator braking device

Abstract

The utility model discloses an elevator braking device which is characterized by comprising an electronic hydraulic braking system, and the electronic hydraulic braking system comprises a hydraulic disc brake embraced on a guide rail of an elevator shaft, a control module used for controlling the hydraulic disc brake to tightly embrace the guide rail and a first speed sensor used for monitoring the movement speed of an elevator car. The first speed sensor is electrically connected with the control module, a speed threshold value is preset in the control module, and when the speed monitored by the first speed sensor is larger than the speed threshold value preset by the control module, the control module controls the hydraulic disc brake to tightly hold a guide rail in an elevator shaft; the first speed sensor is located on the side face of an elevator car and acts on the surface of a guide rail in an elevator shaft. The elevator braking device is a control system independent of the elevator, and can ensure that the elevator system is braked when braking fails due to faults, so that the safety performance of the elevator is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator braking, and in particular relates to an elevator braking device. Background Art

[0002] The speed limiter of the speed limit protection system of the traction drive elevator is an important equipment to ensure the safe operation of the elevator. When the speed exceeds 150%, the elevator speed limiter will act to make the safety clamp stuck on the guide rail. The main components of the speed limiter-safety clamp linkage device include the speed limiter, the safety clamp and the tensioning wheel. The speed limiter can be divided into two types: the pendulum speed limiter and the centrifugal speed limiter. When the rated speed of the elevator car is less than the downward speed, the speed limiter will cut off the elevator safety circuit and make the elevator brake. If the elevator deceleration situation still cannot be stopped, the speed limiter will stop rotating; and the safety clamp includes an electrical safety switch and a lifting linkage mechanism. Although these components have different characteristics, there is still a relatively obvious causal relationship. When the actual operating speed of the elevator is much greater than the set speed, the safety clamp linkage mechanism will be pulled by the speed limiter rope; by driving the safety clamp, the safety clamp linkage mechanism can brake the components to ensure that the elevator car can be stabilized in the guide rail. The loosening of the speed limit rope can be prevented by using a tensioning wheel to ensure that the speed limiter-safety clamp linkage can fully play its role. The timely operation of the speed limiter-safety clamp linkage in the case of stall is based on stable maintenance conditions. Common faults of the speed limiter-safety clamp linkage include: (1) The elevator speed limiter safety clamp linkage mechanism is not properly maintained and the speed limiter is not adjusted in time, which results in a large difference between the initial setting design value of the speed limiter and the speed limiter action speed. (2) Due to the rust of the safety clamp linkage device, the throwing resistance of the swing block is greatly increased, which makes it impossible to clamp the speed limiter rope and cannot be triggered in time. (3) Due to the long operation time of the elevator, the speed limiter rope groove and the rope clamp are continuously worn, and the rope groove depth is increasing. In this way, the speed limiter rope clamp cannot fully play its role, resulting in slippage, which ultimately affects the function. (4) A large amount of sludge, sand and dust are left in the safety clamp wedge, which makes it impossible for the safety clamp wedge to clamp the guide rail, affecting the function of the speed limiter safety clamp linkage mechanism. (5) Due to the siltation in the speed limiter rope groove, the friction is reduced, resulting in a more serious slip phenomenon, which will limit the function of the speed limiter safety clamp linkage mechanism. (6) The connecting rod mechanism is rusted, which makes it impossible to pull the safety clamp wedge, thereby limiting the function of the speed limiter safety clamp linkage mechanism. Since the operation and maintenance of the existing speed limiter safety clamp linkage device involves many factors, in order to ensure the long-term stable and safe operation of the elevator equipment, it is also very necessary to involve another set of speed limit and anti-fall equipment that can be added to the elevator. Utility Model Content

[0003] The purpose of the utility model is to provide an elevator braking device to solve the above problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An elevator braking device includes an electronic hydraulic braking system, which includes a hydraulic disc brake that is clamped on a guide rail in an elevator shaft, a control module for controlling the hydraulic disc brake to clamp the guide rail, and a first speed sensor for monitoring the movement speed of the elevator car. The first speed sensor is electrically connected to the control module, and the control module is preset with a speed threshold. When the speed monitored by the first speed sensor is greater than the speed threshold preset by the control module, the control module controls the hydraulic disc brake to clamp the guide rail in the elevator shaft. The first speed sensor is located on the side of the elevator car and acts on the surface of the guide rail in the elevator shaft.

[0006] According to the above technology, by adopting an electronic hydraulic braking system, including a hydraulic disc brake clamped on the guide rail of the elevator shaft, a control module for controlling the hydraulic disc brake to clamp the guide rail and a first speed sensor for monitoring the movement speed of the elevator car, the hydraulic disc brake clamps the guide rail in the elevator shaft after exceeding the set speed to achieve braking of the elevator car; the elevator braking device is independent of the elevator control system, and can ensure that the elevator system brakes when the brakes fail due to a malfunction, thereby effectively improving the safety performance of the elevator.

[0007] Furthermore, the number of the hydraulic disc brakes is 2-8.

[0008] Furthermore, it also includes a mounting component for mounting the hydraulic disc brake on the elevator car, the hydraulic disc brake is connected to the mounting component, and the mounting component is fixed to the side of the elevator car.

[0009] Furthermore, the installation component includes a steel plate, on which fixing bolts are provided, and the steel plate is fixed to the elevator car by the fixing bolts.

[0010] Furthermore, the hydraulic disc brake is connected to the mounting component via a first pin shaft, and the first pin shaft is horizontally arranged so that the hydraulic disc brake can move left and right on the mounting component.

[0011] Furthermore, the cross-section of the guide rail is I-shaped; one side of the I-shaped guide rail is used for fixed installation in the elevator shaft, and the other side of the I-shaped guide rail has two side edges respectively matching the hydraulic disc brake and the guide shoe.

[0012] Furthermore, the control module is also electrically connected to a second speed sensor, which is installed in the elevator control room and is used to detect the movement speed of the cable; when the second speed sensor detects that the speed exceeds a threshold, the control module controls the hydraulic disc brake to clamp the guide rail.

[0013] Preferably, the control module is electrically connected to a second speed sensor, which is installed on a group of independent pulleys on the plane of the elevator control room and the bottom of the elevator shaft. The wheel rope is passed around the pulley group, and both ends of the wheel rope are fixed to the elevator car. The pulley group moves with the elevator car, and the speed sensor on the pulley is used to detect the movement speed of the car; when the second speed sensor detects that the speed exceeds the threshold, the control module controls the hydraulic disc brake to clamp the guide rail.

[0014] Furthermore, the first speed sensor is installed on the side of the elevator car through an elastic mounting member, the elastic mounting member includes a mounting plate and a spring, the spring is fixedly connected to one side of the mounting plate, the mounting plate is fixed to the side of the elevator car by bolts, and the first speed sensor is fixed to an end of the spring away from the mounting plate.

[0015] Furthermore, the control module is also electrically connected to a first travel switch and a second travel switch, and the first travel switch and the second travel switch are respectively located at the top and bottom ends of the side of the elevator car; when the elevator car hits the top or falls to the bottom at a speed lower than the set brake trigger speed, the first travel switch or the second travel switch is triggered by a trigger component arranged on the top side or bottom side in the elevator shaft, so that the control module controls the hydraulic disc brake to clamp the guide rail.

[0016] Beneficial effects: By adopting an electronic hydraulic braking system, including a hydraulic disc brake held on the guide rail of the elevator shaft, a control module for controlling the hydraulic disc brake to hold the guide rail and a first speed sensor for monitoring the movement speed of the elevator car, the hydraulic disc brake holds the guide rail in the elevator shaft after exceeding the set speed to achieve braking of the elevator car; the elevator braking device is independent of the control system of the elevator, which can ensure that braking is performed when the elevator system fails due to a fault, thereby effectively improving the safety performance of the elevator; in addition, by setting up the control module, a first travel switch and a second travel switch are also electrically connected, and the first travel switch and the second travel switch are respectively located at the top and bottom ends of the side of the elevator car; when the elevator car hits the top or falls to the bottom, the travel switch is triggered by the upper trigger component on the top side or the lower trigger component on the bottom side in the elevator shaft, so that the control module controls the hydraulic disc brake to hold the guide rail to prevent the elevator from hitting the top or falling to the bottom due to a fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the installation diagram of the elevator braking device when it is implemented;

[0018] Figure 2 This is a top view schematic diagram of the elevator braking device during installation;

[0019] Figure 3 This is a schematic diagram of the installation of the first speed sensor of the elevator braking device;

[0020] Figure 4This is a schematic diagram of the connection of the elevator brake device module;

[0021] Figure 5 It is a top view installation diagram of the hydraulic disc brake and guide shoe of the elevator braking device;

[0022] Figure 6 This is a schematic diagram of the installation of the hydraulic disc brake and guide shoe of the elevator braking device from the right side;

[0023] Figure 7 This is a schematic diagram of the installation position of the second speed sensor of the elevator braking device.

[0024] 1- hydraulic disc brake, 2- control module, 3- elevator car, 4- first speed sensor, 401- mounting plate, 402- spring, 5- mounting component, 501- Mitsubishi tapered mounting part, 502- steel plate, 6- second travel switch, 7- first travel switch, 8- guide rail, 9- first pin shaft, 91- second pin shaft, 10- upper trigger component, 11- lower trigger component, 12- guide shoe, 13- second speed sensor. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0026] Example:

[0027] like Figures 1 to 4As shown, this embodiment provides an elevator braking device, which is used to be installed on the side of the elevator car 3. The device includes an electronic hydraulic braking system, which includes a hydraulic disc brake 1 that is clamped on the guide rail 8 of the elevator shaft, a control module 2 for controlling the clamping of the hydraulic disc brake 1, and a first speed sensor 4 for monitoring the movement speed of the elevator car 3. The first speed sensor 4 is electrically connected to the control module 2. The control module 2 is preset with a speed threshold. When the speed monitored by the first speed sensor 4 is greater than the speed threshold preset by the control module 2, the control module 2 is used to control the hydraulic disc brake 1 to clamp the guide rail 8 in the elevator shaft; the first speed sensor 4 is located on the side of the elevator car 3 and acts on the surface of the guide rail 8 in the elevator shaft. Specifically, the electronic hydraulic braking system is a mature technology and will not be described in detail here; specifically, the control module 2 can be installed on the top or bottom of the elevator car 3. There are 2-8 hydraulic disc brakes 1. Specifically, one elevator car 3 is installed with at least 2-8 hydraulic disc brakes 1; when 2 are installed, they are installed on the left and right sides of the elevator car 3 respectively; when 4 are installed, as shown in FIG. Figure 1 , Figure 2 As shown, two hydraulic disc brakes can be installed on the waist of the left and right sides of the elevator car 3, and specifically, the hydraulic disc brakes on the same side are installed 1 meter apart; when eight are installed, four can be installed on the left and right sides of the elevator car 3; specifically, they are installed on the sides of the elevator car 3 according to the position of the guide rail 8 of the elevator. It can be understood that the hydraulic disc brakes 1 can also be 3, 5 or 7, and can be installed on the sides of the car 3 for reasonable distribution. Although the balance may be weaker than the symmetrical distribution installation method, it should still be within its protection range.

[0028] Preferably, the elevator braking device further comprises a mounting component 5 for mounting the hydraulic disc brake 1 on the elevator car 3, the hydraulic disc brake 1 is connected to the mounting component 5, and the mounting component 5 is fixed to the side of the elevator car 3. As a possible implementation, the mounting component 5 is a steel plate 502, and the steel plate 502 is provided with fixing bolts, and the steel plate 502 is fixed to the elevator car 3 by the fixing bolts.

[0029] Preferably, Figure 2 As shown, the hydraulic disc brake 1 is connected to the mounting component 5 via a first pin shaft 9 , and the first pin shaft 9 is horizontally arranged so that the hydraulic disc brake 1 can move left and right on the mounting component 5 .

[0030] Preferably, Figure 2As shown, the cross section of the guide rail 8 is an I-shaped one; one side of the I-shaped guide rail is used for fixed installation in the elevator shaft, and the other side of the I-shaped guide rail has two side edges that respectively cooperate with the hydraulic disc brake 1 and the guide shoe 12. In specific implementation, the hydraulic disc brake and the guide shoe do not share the guide rail to prevent the lubricating oil of the guide shoe from affecting the braking effect. Setting an I-shaped guide rail can reduce components as much as possible. Figure 5 As shown, during implementation, a second pin shaft 91 is further provided between the hydraulic disc brake 1 and the first pin shaft 9, and the axis of the second pin shaft 91 is perpendicular to the axis of the first pin shaft 9, and the hydraulic disc brake 1 is installed on the second pin shaft 91, and the second pin shaft 91 is installed on the first pin shaft. Of course, the second pin shaft is provided with a necessary pin shaft mounting part, which is arranged on the first pin shaft through the pin shaft mounting part, so that the second pin shaft can move left and right relative to the first pin shaft, and the hydraulic disc brake 1 can move left and right relative to the second pin shaft. Because the first pin shaft is perpendicular to the axis of the second pin shaft, the hydraulic disc brake 1 can move left and right, forward and backward relative to the mounting component 5, thereby avoiding friction between the hydraulic disc brake 1 and the guide rail when it shakes.

[0031] When implementing it, Figure 2 , Figure 5 , Figure 6 As shown, the hydraulic disc brake and the guide shoe are not in the same horizontal plane, and when installed on the elevator car, the hydraulic disc brake and the guide shoe are staggered and symmetrically arranged to enhance stability.

[0032] Preferably, the first speed sensor 4 is mounted on the side of the elevator car 3 through an elastic mounting member, the elastic mounting member includes a mounting plate 401 and a spring 402, the spring 402 is fixedly connected to one side of the mounting plate 401, the mounting plate 401 is fixed to the side of the elevator car 3 by bolts, and the first speed sensor 4 is fixed to the end of the spring 402 away from the mounting plate 401. By using the elastic mounting member to install the first speed sensor 4, the first speed sensor 4 can be better contacted with the guide rail 8 to achieve monitoring.

[0033] Preferably, Figure 1 As shown, the control module 2 is also electrically connected to a first travel switch 7 and a second travel switch 6, which are respectively located at the top and bottom ends of the side of the elevator car 3; when the elevator car 3 hits the top or falls to the bottom, the travel switch is triggered by the upper trigger component 10 on the top side or the lower trigger component 11 on the bottom side in the elevator shaft, so that the control module 2 controls the hydraulic disc brake 1 to hold the guide rail 8 to prevent the elevator from hitting the top or falling to the bottom due to a malfunction.

[0034] In one possible implementation, Figure 7As shown, the control module 2 is also electrically connected to a second speed sensor 13, which is installed on the top platform and the bottom of the elevator and is used to detect the movement speed of the wheel rope car. When the second speed sensor 13 detects that the speed exceeds the set threshold, the control module controls the brake.

[0035] In another possible implementation, the control module 2 is electrically connected to a second speed sensor 13, which is installed on a group of independent pulleys on the plane of the elevator control room and the bottom of the elevator shaft. The wheel rope is passed around the pulley group, and both ends of the wheel rope are fixed to the elevator car. The pulley group moves with the elevator car, and the speed sensor 13 on the pulley is used to detect the movement speed of the car; when the second speed sensor 13 detects that the speed exceeds the threshold, the control module 2 controls the hydraulic disc brake 1 to clamp the guide rail 8.

[0036] The device is independent of the elevator's control system and can ensure that the elevator system brakes when the brakes fail due to a fault, effectively improving the elevator's safety performance.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An elevator braking device, characterized in that: The invention comprises an electronic hydraulic brake system, wherein the electronic hydraulic brake system comprises a hydraulic disc brake (1) held on a guide rail (8) of an elevator shaft, a control module (2) for controlling the hydraulic disc brake (1) to hold the guide rail (8), and a first speed sensor (4) for monitoring the moving speed of an elevator car (3), wherein the first speed sensor (4) is electrically connected to the control module (2), the control module (2) is preset with a speed threshold, and when the speed monitored by the first speed sensor (4) is greater than the speed threshold preset by the control module (2), the control module (2) controls the hydraulic disc brake (1) to hold the guide rail (8) in the elevator shaft; the first speed sensor (4) is located on the side of the elevator car (3) and acts on the surface of the guide rail (8) in the elevator shaft.

2. The elevator braking device according to claim 1, characterized in that: The number of the hydraulic disc brakes (1) is 2 to 8.

3. The elevator braking device according to claim 1, characterized in that: It also includes a mounting component (5) for mounting the hydraulic disc brake (1) on the elevator car (3); the hydraulic disc brake (1) is connected to the mounting component (5); and the mounting component (5) is fixed to the side of the elevator car (3).

4. The elevator braking device according to claim 3, characterized in that: The mounting component (5) comprises a steel plate (502), on which fixing bolts are arranged, and the steel plate (502) is fixed to the elevator car (3) by means of the fixing bolts.

5. The elevator braking device according to claim 3, characterized in that: The hydraulic disc brake (1) is connected to the mounting component (5) via a first pin shaft (9), and the first pin shaft (9) is arranged horizontally, so that the hydraulic disc brake (1) can move left and right on the mounting component (5).

6. The elevator braking device according to claim 1, characterized in that: The cross section of the guide rail (8) is I-shaped; one side of the I-shaped guide rail is used for fixed installation in the elevator shaft, and the other side of the I-shaped guide rail has two side edges respectively matching the hydraulic disc brake (1) and the guide shoe (12).

7. The elevator braking device according to claim 1, characterized in that: The control module (2) is electrically connected to a second speed sensor (13), which is installed on a group of independent pulleys on the plane of the elevator control room and the bottom of the elevator shaft. The wheel rope passes around the pulley group, and the two ends of the wheel rope are fixed to the elevator car. The pulley group moves with the elevator car, and the speed sensor (13) on the pulley is used to detect the movement speed of the car; when the second speed sensor (13) detects that the speed exceeds a threshold, the control module (2) controls the hydraulic disc brake (1) to clamp the guide rail (8).

8. The elevator braking device according to claim 1, characterized in that: The first speed sensor (4) is mounted on the side of the elevator car (3) via an elastic mounting member, wherein the elastic mounting member comprises a mounting plate (401) and a spring (402), wherein the spring (402) is fixedly connected to one side of the mounting plate (401), and the mounting plate (401) is fixed to the side of the elevator car (3) via bolts, and the first speed sensor (4) is fixed to an end of the spring (402) away from the mounting plate (401).

9. The elevator braking device according to claim 1, characterized in that: The control module (2) is also electrically connected to a first travel switch (7) and a second travel switch (6), the first travel switch (7) and the second travel switch (6) being respectively located at the top and the bottom of the side of the elevator car (3); when the elevator car (3) reaches the top at a speed lower than a set brake triggering speed, the first travel switch (7) is triggered by a triggering component arranged on the top side of the elevator shaft; when the elevator car falls to the bottom, the second travel switch (6) is triggered by a triggering component arranged on the bottom side of the elevator shaft, so that the control module (2) controls the hydraulic disc brake (1) to hold the guide rail (8) tightly.

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