A device for measuring thickness and gap of elevator brake shoe

Abstract

A device and method for measuring the thickness and gap of an elevator brake shoe, comprising a base, a brake wheel set arranged on the base, and a brake member, which is at least provided with a brake shoe, which is suitable for abutting the brake wheel set for braking; and a detection member, which includes a thickness measuring member and a gap measuring member, the thickness measuring member is provided with a thickness measuring probe, and the thickness measuring probe is fixedly connected to the top surface of the brake shoe; the gap measuring member includes a wear block, a first gap measuring probe, and a second gap measuring probe, and the wear block is fixedly connected to one side of the brake shoe through a rib plate; the first gap measuring probe is fixedly connected to the rib plate, and is used to detect the thickness of the wear block; the second gap measuring probe passes through the rib plate and extends into the wear block, and is used to detect the distance between the second gap measuring probe and the brake wheel set. The present application can realize the automatic measurement of the thickness and gap of the brake shoe, reduce the frequency and uncertainty of manual measurement, and at the same time, the present application can realize later installation, and the brake shoe does not need to be equipped with a built-in detection device before leaving the factory.

Description

Technical Field

[0001] The invention belongs to the technical field of elevators, and in particular relates to a device for measuring the thickness and gap of elevator brake shoes. Background Art

[0002] Since elevators are widely used in residential and commercial buildings, the safe and reliable operation of elevators is an important issue involving public safety. Existing elevator deceleration relies on brake shoes and flywheels. When the elevator decelerates, the brake shoes and flywheels are in close contact to generate huge friction, thereby achieving the deceleration of the elevator. Therefore, once the brake shoes fail, the reducer that relies on brake shoes for deceleration will cause the elevator to top up, slip, and other problems, causing major safety accidents.

[0003] Existing methods for measuring brake shoe wear of elevators: 1. Most of them use feeler gauges for manual inspection, which can only be carried out during elevator maintenance; 2. When manually inspecting wear, only the gap between the brake shoe and the flywheel can be measured, and the increase in the gap caused by the wear of the brake shoe tightening device cannot be ruled out, resulting in inaccurate estimation of the brake shoe wear; 3. Existing automatic inspection of elevator brake shoes generally only has a separate wear alarm or gap alarm. A signal is generated only when the wear reaches the warning level or an alarm is issued when the brake shoe gap exceeds the standard; 4. General brake shoe detection devices are installed in the brake shoe when leaving the factory, which is inconvenient to install later.

[0004] At present, the safe operation of the reducer relies on the redundant design of the double brake shoes and daily maintenance inspections. Generally, the elevator space is small and it is difficult to measure the distance. It is difficult to ensure safety by relying solely on manual maintenance inspections. The current brake shoe wear detection device is generally a proximity sensor, which can only issue an alarm signal when the wear amount is close to the warning value, and cannot obtain the wear trend and predict the brake shoe maintenance and adjustment time.

[0005] In view of this, it is necessary to develop a device for measuring the thickness and gap of elevator brake shoes to solve the above problems. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a device for measuring the thickness and gap of elevator brake shoes, which is intended to be installed later and measure the brake shoe thickness and brake shoe gap at the same time to achieve online monitoring of the above two parameters.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A device for measuring the thickness and gap of elevator brake shoes, comprising a base, a brake wheel set arranged on the base, and

[0009] A brake member, which is provided with at least a brake shoe, wherein the brake shoe is suitable for abutting against the brake wheel set for braking; and

[0010] The detection part includes a thickness measuring part and a gap measuring part. The thickness measuring part is provided with a thickness measuring probe, and the thickness measuring probe is fixedly connected to the top surface of the brake shoe; the gap measuring part includes a wear block, a first gap measuring probe, and a second gap measuring probe. The wear block is fixedly connected to one side of the brake shoe through a rib plate; the first gap measuring probe is fixedly connected to the rib plate and is used to detect the thickness of the wear block; the second gap measuring probe passes through the rib plate and extends into the wear block, and is used to detect the distance between the second gap measuring probe and the brake wheel set.

[0011] Furthermore, the gap measuring member also includes a driving gear, which is rotatably connected to the rib plate, and the driving gear is located beside the second gap measuring probe, and the driving gear is meshingly connected with the second gap measuring probe.

[0012] Furthermore, the front end surface of the first gap-feeling probe is flush with the outer wall of the wear block, and the front end surface of the second gap-feeling probe is flush with the inner wall of the brake shoe.

[0013] Furthermore, the wear block is a consumable part, and the thickness of the wear block is equal to the thickness of the brake shoe.

[0014] Furthermore, the thickness measuring probe and the first gap measuring probe are both electromagnetic ultrasonic probes, and the second gap measuring probe is an eddy current ranging probe.

[0015] Furthermore, the brake member also includes

[0016] A swing arm is symmetrically arranged on both sides of the brake wheel set, one side of the swing arm is rotatably connected to the base, and the brake shoe is fixedly connected to the swing arm; and

[0017] An adjusting part includes two symmetrical connecting blocks and a magnetizer, wherein the two connecting blocks are respectively arranged on the other side of the two swing arms, the magnetizer is arranged between the two connecting blocks, a gate opening wrench is arranged on the circumferential surface of the magnetizer, a push rod is axially arranged on the magnetizer, and both sides of the push rod are passed through the connecting blocks, a pull rod is also axially arranged on the magnetizer, and both sides of the pull rod are passed through the connecting blocks, and a spring is arranged at the end of the pull rod.

[0018] Furthermore, the brake wheel assembly includes a flywheel, which is rotatably connected to the base, and a guide plate is provided on the swing arm. When the swing arm is close to the flywheel, the guide plate abuts against the end face of the flywheel to guide the flywheel.

[0019] Compared with the prior art, the beneficial effects of the present invention are: first, the present application can realize automatic measurement of brake shoe thickness and gap, reducing the frequency and uncertainty of manual measurement; second, the present application can realize later installation, and the brake shoe does not need to be equipped with a factory-installed detection device; third, in the brake shoe gap measurement process of the present application, the ultrasonic thickness measurement result of the wear block can be combined, and the distance between the eddy current ranging probe and the flywheel can be adjusted by driving the teeth to prevent wear and obtain accurate brake shoe gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a device for measuring the thickness and gap of an elevator brake shoe according to one embodiment of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a detection component in a device for measuring the thickness and gap of an elevator brake shoe according to one embodiment of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a gap measuring member in a device for measuring the thickness and gap of an elevator brake shoe according to one embodiment of the present invention;

[0024] Figure 4 In a device for measuring the thickness and gap of an elevator brake shoe according to an embodiment of the present invention, Figure 3 Schematic cross-section diagram of .

[0025] Reference numerals and component descriptions in the drawings:

[0026] 1-base; 2-brake wheel assembly; 21-flywheel; 3-brake member; 31-swing arm; 311-guide plate; 32-brake shoe; 33-adjusting member; 331-connecting block; 332-magnetic device; 333-gate opening wrench; 334-thrust rod; 335-pull rod; 336-spring; 4-detection member; 41-thickness measuring member; 411-thickness measuring probe; 42-gap measuring member; 421-wear block; 422-first gap measuring probe; 423-second gap measuring probe; 424-rib plate; 425-driving gear. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below through specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] refer to Figure 1 A device for measuring the thickness and gap of an elevator brake shoe comprises a base 1, a brake wheel group 2, a brake component 3 and a detection component 4. The brake wheel group 2 is arranged on the base 1, the bottom of the brake component 3 is rotatably connected to both sides of the base 1, and the brake component 3 is arranged around the brake wheel group 2. The brake component 3 is provided with a detection component 4 for detecting the thickness and gap of the elevator brake shoe 32.

[0029] Reference again Figure 1 The brake wheel assembly 2 includes a flywheel 21, which is rotatably connected to the base 1. The rear end of the flywheel 21 is transmission-connected to a traction machine for providing traction power to the flywheel 21.

[0030] Reference again Figure 1 The brake member 3 includes a swing arm 31, a brake shoe 32 and an adjusting member 33. The two swing arms 31 are symmetrically arranged on both sides of the brake wheel assembly 2, and one side of the swing arm 31 is rotatably connected to the base 1, and the brake shoe 32 is fixed to the swing arm 31. The adjusting member 33 is arranged on the other side of the two swing arms 31. Specifically, the adjusting member 33 includes two symmetrically arranged connecting blocks 331 and a magnetizer 332. The two symmetrical connecting blocks 331 are respectively arranged on the other side of the swing arm 31. The magnetizer 332 is arranged between the two connecting blocks 331, and a gate opening wrench 333 is arranged on the circumference of the magnetizer 332. The gate opening wrench 333 is used to manually open the gate under special circumstances. The magnetizer 332 is axially provided with a push rod 334. Both sides of the push rod 334 are inserted through the connecting block 3 On 31, the push rod 334 is used to connect the magnetizer 332 and the swing arm 31. The push rod 334 is retractable for easy movement. When the flywheel 21 needs to be braked, the magnetizer 332 drives the push rod 334 to retract, so that the two swing arms 31 can move relatively close to the flywheel 21, and further enable the brake shoe 32 to abut against the brake wheel group 2 and perform friction braking. The magnetizer 332 is also axially provided with a pull rod 335, and both sides of the pull rod 335 are inserted into the connecting block 331. The end of the pull rod 335 is provided with a spring 336 for easy resetting.

[0031] Preferably, a guide plate 311 is provided on the swing arm 31. When the swing arm 31 is close to the flywheel 21, the guide plate 311 can abut against the end surface of the flywheel 21 to ensure stability during braking, reduce the imbalance during braking, and improve the braking effect.

[0032] refer to Figures 2 to 4The detection part 4 includes a thickness measuring part 41 and a gap measuring part 42. The thickness measuring part 41 is fixedly connected to the top surface of the brake shoe 32. The thickness measuring part 41 is provided with a thickness measuring probe 411. Preferably, the thickness measuring probe 411 is an electromagnetic ultrasonic probe; the gap measuring part 42 includes a wear block 421, a first gap measuring probe 422 and a second gap measuring probe 423. The wear block 421 is fixedly connected to one side of the brake shoe 32 through a rib plate 424. The wear block 421 is a consumable part. Specifically, it can be made of easily worn materials such as rubber and plastic, which is convenient for early debugging of the thickness of the wear block 421. When in use, it is necessary to ensure that the thickness of the wear block 421 is equal to the thickness of the brake shoe 32; the first gap measuring probe 422 is fixedly connected to the top surface of the brake shoe 32. On the rib plate 424, the end face of the first gap probe 422 is flush with the outer wall of the wear block 421, and the first gap probe 422 is fixed on the rib plate 424 by glue that can conduct sound waves, and is used to accurately detect the thickness of the wear block 421; the second gap probe 423 passes through the rib plate 424 and extends into the wear block 421, and the front end of the second gap probe 423 is flush with the inner wall of the brake shoe 32, and is used to detect the distance between the second gap probe 423 and the brake wheel group 2. Furthermore, the front end circumferential surface of the second gap probe 423 is provided with an external thread, and the brake shoe 32 is provided with a threaded hole relative to the external thread. When installed, the external thread is threadedly connected with the threaded hole. Preferably, the first gap probe 422 is an electromagnetic ultrasonic probe, and the second gap probe 423 is an eddy current ranging probe.

[0033] Furthermore, the gap measuring member 42 also includes a driving gear 425, which is electrically controlled. The driving gear 425 is rotatably connected to the rib plate 424, and the driving gear 425 is located next to the second gap measuring probe 423. The rear end of the external thread of the second gap measuring probe 423 is provided with a gear structure. The driving gear 425 is meshed and connected with the gear structure of the second gap measuring probe 423. After the brake shoe 32 has been involved in braking for a certain period of time, its thickness will be reduced to a certain extent. Driving the driving gear 425 can adjust the depth of the second gap measuring probe 423 in the brake shoe 32 to prevent the second gap measuring probe 423 from being worn and damaged.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for measuring the thickness and gap of elevator brake shoes, comprising a base and a brake wheel set arranged on the base, characterized in that: It also includes a brake member, which is at least provided with a brake shoe, and the brake shoe is suitable for abutting against the brake wheel group for braking; and a detection member, which includes a thickness measuring member and a gap measuring member, and the thickness measuring member is provided with a thickness measuring probe, and the thickness measuring probe is fixedly connected to the top surface of the brake shoe; the gap measuring member includes a wear block, a first gap measuring probe, and a second gap measuring probe, and the wear block is fixedly connected to one side of the brake shoe through a rib plate; the first gap measuring probe is fixedly connected to the rib plate and is used to detect the thickness of the wear block; The second gap measuring probe penetrates the rib plate and extends into the wear block, and is used to detect the distance between the second gap measuring probe and the brake wheel set; The gap measuring member further comprises a driving gear, the driving gear is rotatably connected to the rib plate, and the driving gear is located beside the second gap measuring probe, and the driving gear is meshingly connected with the second gap measuring probe; The front end surface of the first gap feeler probe is flush with the outer wall of the wear block, and the front end surface of the second gap feeler probe is flush with the inner wall of the brake shoe; The front end circumference of the second gap measuring probe is provided with an external thread, and the brake shoe is provided with a threaded hole relative to the external thread. When installing, the external thread is threadedly connected with the threaded hole; The driving gear is controlled by a motor; a gear structure is provided at the rear end of the external thread of the second gap measuring probe; the thickness of the brake shoe will be reduced after a certain period of time of braking, and driving the driving gear can adjust the depth of the second gap measuring probe in the brake shoe.

2. The device for measuring the thickness and gap of elevator brake shoes according to claim 1, characterized in that: The wear block is a consumable part, and the thickness of the wear block is equal to the thickness of the brake shoe.

3. The device for measuring the thickness and gap of elevator brake shoes according to claim 1, characterized in that: The thickness measuring probe and the first gap measuring probe are both electromagnetic ultrasonic probes, and the second gap measuring probe is an eddy current ranging probe.

4. The device for measuring the thickness and gap of elevator brake shoes according to claim 1, characterized in that: The brake component also includes a swing arm, which is symmetrically arranged on both sides of the brake wheel group, and one side of the swing arm is rotatably connected to the base, and the brake shoe is fixed to the swing arm; and an adjusting component, which includes two symmetrical connecting blocks and a magnetizer, the two connecting blocks are respectively arranged on the other side of the two swing arms, the magnetizer is arranged between the two connecting blocks, a gate opening wrench is arranged on the circumference of the magnetizer, a push rod is axially arranged on the magnetizer, and both sides of the push rod are passed through the connecting block, and a pull rod is also axially arranged on the magnetizer, and both sides of the pull rod are passed through the connecting block, and a spring is arranged at the end of the pull rod.

5. The device for measuring the thickness and gap of elevator brake shoes according to claim 4, characterized in that: The brake wheel assembly comprises a flywheel which is rotatably connected to the base. A guide plate is arranged on the swing arm. When the swing arm approaches the flywheel, the guide plate abuts against the end face of the flywheel to guide the flywheel.

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