CN111238853A - Elevator brake shoe testing device, manufacturing equipment and testing method - Google Patents
Elevator brake shoe testing device, manufacturing equipment and testing method Download PDFInfo
- Publication number
- CN111238853A CN111238853A CN202010208690.5A CN202010208690A CN111238853A CN 111238853 A CN111238853 A CN 111238853A CN 202010208690 A CN202010208690 A CN 202010208690A CN 111238853 A CN111238853 A CN 111238853A
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- brake shoe
- temperature sensor
- heat
- temperature
- groove
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
- G01K1/12—Protective devices, e.g. casings for preventing damage due to heat overloading
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to an elevator brake shoe testing device, manufacturing equipment and a testing method, wherein the brake shoe testing device is provided with a heat dissipation groove (4), a temperature sensor (5), a heat accumulation groove (2) and other structures, the brake shoe testing device is manufactured through laser cutting equipment, multiple tests can be conveniently carried out, the heat conduction silica gel (8), a copper sheet (7) and other structures in a brake shoe can avoid the clamp block from failing due to overhigh temperature or causing test environment distortion, and the accuracy of a detection result is improved.
Description
Technical Field
The invention relates to an elevator brake shoe testing device, manufacturing equipment and a testing method, and belongs to the field of elevator safety control systems.
Background
With the development of economic society of China and the continuous emergence of high-rise buildings, elevators are gradually popularized. People use the elevator more and more conveniently, and meanwhile, the potential safety hazard of the elevator is also paid attention gradually. An elevator brake plays an important role in elevator safety protection, a main part of the brake is a brake shoe, and the abrasion of the brake shoe in long-term use can cause insufficient brake force and further cause the safety problems of long braking distance, unreliable braking and the like.
Disclosure of Invention
The invention aims to overcome the defects, and provides a testing device, manufacturing equipment and a testing method for an elevator brake shoe, which are convenient for technicians to determine and detect the braking performance of the brake shoe, and continuously improve the aspects of the structure, the material and the like of the brake shoe.
The technical scheme of the invention is as follows:
a brake shoe test device for an elevator is provided with a rectangular block-shaped brake shoe (1), a heat dissipation groove (4) is formed in the middle of the brake shoe (1), a plurality of heat gathering grooves (2) are formed in the working surface of the brake shoe (1), the heat gathering grooves (2) are arranged in parallel and extend in two directions forming a certain included angle with the length direction of the brake shoe (1), and the heat gathering grooves (2) are crossed with each other to form a diamond-shaped protruding block (3); the radiating groove (4) penetrates through the brake shoe (1) along the width direction of the brake shoe (1), and the radiating groove (4) is positioned in the middle of the brake shoe (1) in the length direction; still include temperature sensor (5) of bar shape, temperature sensor (5) gather in hot groove (2) along length direction embedding, at temperature sensor (5) outside parcel copper sheet (7), it has heat conduction silica gel (8) to fill between temperature sensor (5) and the surface of gathering hot groove (2), and wire (6) of temperature sensor (5) stretch out and are connected with the temperature recorder after fixing device is fixed in radiating groove (4).
In the elevator brake shoe testing device, the copper sheet (7) is a red copper sheet.
The manufacturing equipment of the elevator brake shoe test device comprises a laser head (16) and a clamping device (20), wherein the laser head (16) is hollow inside, a powder inflow port (17) and a cooling water inlet (18) are arranged on the clamping device (20), the clamping device mainly comprises an upper cover plate (10), a rear baffle plate (12), a guide plate (13), a backing plate (14) and a base (15), the backing plate (14) and the guide plate (13) are sequentially placed on the base (15) from bottom to top, the rear baffle plate (12) is fixed at the rear end of the base (15), the upper cover plate (10) is fixed at the top end of the rear baffle plate (12), a brake shoe fixing seat (19) is arranged between the base (15) and the upper cover plate (10), and a brake shoe (1) is fixed on the brake shoe fixing seat (19), and a part to be processed of the brake shoe (1) extends out of the upper cover plate (10) through the upper hole (11).
A method of testing an elevator brake shoe, the method comprising the steps of:
(a) manufacturing a brake shoe (1) by using laser cutting equipment;
(b) the method comprises the following steps that a brake shoe (1) is installed on a car, so that the brake shoe (1) is arranged in the vertical direction, and a temperature sensor (5) is connected with a temperature recorder through a lead (6);
(c) the lift car is lifted to a preset height, wherein the descending speed of the lift car is gradually increased when the lift car freely falls, the load of the lift car is set to be 4t, and the sliding distance is set to be 660mm when the rated speed is 2.5 ms;
(d) the car triggers the action of safety tongs, and two brake shoes (1) of safety tongs can press from both sides tight guide rail and brake, and brake shoe (1) and the last production of heat of guide rail lead to the temperature to rise, and pre-buried temperature sensor (5) in gathering hot groove (2) can detect real-time temperature and give the temperature recorder to reacing the temperature rise value of safety tongs braking in-process.
According to the technical scheme, the invention has the following advantages: in the process that the brake shoe clamps the guide rail to brake, the temperature sensor pre-embedded in the heat accumulating groove can detect real-time temperature and transmit the real-time temperature to the temperature recorder, heat generated on the working surface of the brake shoe can be better transmitted into the heat accumulating groove and then detected by the temperature sensor, and overhigh heat can be dissipated by the heat dissipation groove, so that the clamp block can be prevented from losing efficacy or causing test environment distortion due to overhigh temperature; because the protruding piece of brake shoe rhombus can be by the guide rail grinding and produce a large amount of pieces in braking in-process, and the relative brake shoe length direction slope of heat accumulation groove on this brake shoe, the slip direction slope of relative brake shoe promptly, consequently, the piece can get into in the heat accumulation groove, the cell wall of heat accumulation groove can block the piece, avoid the piece to take the heat directly to break away from the brake shoe, and the piece of gathering in the heat accumulation groove can give the brake shoe with heat transfer, thereby detected by temperature sensor, the piece of gathering in the heat accumulation groove promptly can not influence the sliding friction resistance of brake shoe, the piece contacts with the guide rail simultaneously, thereby increase the area of contact between brake shoe and the guide rail, thereby increase the heat conduction efficiency between guide rail and the clamp block, improve temperature sensor's measurement accuracy.
Drawings
FIG. 1 is a schematic view of the brake shoe structure of the present invention.
FIG. 2 is a schematic cross-sectional view of a brake shoe of the present invention.
FIG. 3 is a schematic view of a manufacturing apparatus of the brake shoe of the present invention.
Description of the reference numerals
(1) A brake shoe; (2) a heat collecting groove; (3) a raised block; (4) a heat sink; (5) a temperature sensor; (6) a wire; (7) a copper sheet; (8) heat conducting silica gel; (9) screwing; (10) an upper cover plate; (11) an upper square hole; (12) a tailgate; (13) a guide plate; (14) a base plate; (15) a base; (16) a laser head; (17) a powder flow inlet; (18) a cooling water inlet; (19) a brake shoe holder; (20) clamping device
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is described in further detail below with reference to the figures and the embodiments.
FIG. 1 is a schematic view of a brake shoe structure of the invention, which is provided with a rectangular block-shaped brake shoe (1), wherein the middle part of the brake shoe (1) is provided with a heat dissipation groove (4), a plurality of heat gathering grooves (2) are arranged on the working surface of the brake shoe (1), the heat gathering grooves (2) are arranged in parallel and extend along two directions forming a certain included angle with the length direction of the brake shoe (1), and the heat gathering grooves (2) are crossed with each other to form a diamond-shaped protruding block (3); the heat-gathering grooves are divided into two groups in two directions, wherein one group of heat-gathering grooves is inclined towards the left edge of the brake shoe, the other group of heat-gathering grooves is inclined towards the right edge of the brake shoe, and a plurality of heat-gathering grooves (2) in each group are parallel to each other, so that the included angle between the length direction of the heat-gathering grooves (2) and the length direction of the brake shoe is an acute angle; the radiating groove (4) penetrates through the brake shoe (1) along the width direction of the brake shoe (1), and the radiating groove (4) is located in the middle of the length direction of the brake shoe (1).
Fig. 2 is a schematic cross-sectional view of the brake shoe of the invention, the brake shoe (1) further comprises a straight-bar-shaped temperature sensor (5), the temperature sensor (5) is embedded into the heat-gathering groove (2) along the length direction, a copper sheet (7) is wrapped outside the temperature sensor (5), heat-conducting silica gel (8) is filled between the temperature sensor (5) and the surface of the heat-gathering groove (2), and a lead (6) of the temperature sensor (5) is fixed in the heat-dissipating groove (4) through a fixing device and then extends out and is connected with a temperature recorder.
Temperature sensor fixes in gathering the hot inslot through heat conduction silica gel, the terminal surface of the protruding piece of heat conduction silica gel protrusion rhombus when not braking, consequently have elastic heat conduction silica gel can be compressed into gathering the hot inslot when the tight braking of brake block clamp, and heat conduction silica gel can rise tightly at the guide rail with gather between the hot groove, can enough guarantee heat conduction silica gel and guide rail full contact and transfer heat, contact between temperature sensor and the heat conduction silica gel is more abundant effective simultaneously.
FIG. 3 is a schematic view of the manufacturing equipment of the brake shoe testing device of the invention, which comprises a laser head (16) and a clamping device (20), wherein the laser head (16) is hollow, a powder inflow port (17) and a cooling water inlet (18) are arranged on the clamping device (20), the clamping device mainly comprises an upper cover plate (10), a rear baffle plate (12), a guide plate (13), a backing plate (14) and a base (15), the backing plate (14) and the guide plate (13) are sequentially placed on the base (15) from bottom to top, the rear baffle plate (12) is fixed at the rear end of the base (15), the upper cover plate (10) is fixed at the top end of the rear baffle plate (12), a brake shoe fixing seat (19) is arranged between the base (15) and the upper cover plate (10), and a brake shoe (1) is fixed on the brake shoe fixing seat (19), and a part to be processed of the brake shoe (1) extends out of the upper cover plate (10) through the upper hole (11).
When the elevator brake shoe is tested, the method comprises the following steps:
(a) manufacturing a brake shoe (1) by using laser cutting equipment;
(b) the method comprises the following steps that a brake shoe (1) is installed on a car, so that the brake shoe (1) is arranged in the vertical direction, and a temperature sensor (5) is connected with a temperature recorder through a lead (6);
(c) the lift car is lifted to a preset height, wherein the descending speed of the lift car is gradually increased when the lift car freely falls, the load of the lift car is set to be 4t, and the sliding distance is set to be 660mm when the rated speed is 2.5 ms;
(d) the car triggers the action of safety tongs, and two brake shoes (1) of safety tongs can press from both sides tight guide rail and brake, and brake shoe (1) and the last production of heat of guide rail lead to the temperature to rise, and pre-buried temperature sensor (5) in gathering hot groove (2) can detect real-time temperature and give the temperature recorder to reacing the temperature rise value of safety tongs braking in-process.
The exterior of the temperature sensor is wrapped with a red copper sheet, and the heat-conducting silica gel is tightly pressed and covered on the red copper sheet. The red copper sheet has higher heat transfer efficiency, and the red copper sheet can play the protection to temperature sensor simultaneously, avoids temperature sensor under the tensile force and gathers and to produce wearing and tearing between the hot groove to guarantee measuring stability, and the red copper sheet is yielding, can appear deformation and local paste under the effect of heat conduction silica gel and lean on gathering hot groove inner wall and bottom surface, thereby increase heat transfer efficiency, improve measurement accuracy.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (4)
1. An elevator brake shoe test device, has rectangular block-shaped brake shoe (1), its characterized in that: the heat dissipation device is characterized in that a heat dissipation groove (4) is formed in the middle of the brake shoe (1), a plurality of heat gathering grooves (2) are formed in the working surface of the brake shoe (1), the heat gathering grooves (2) are arranged in parallel and extend in two directions forming a certain included angle with the length direction of the brake shoe (1), and the heat gathering grooves (2) are crossed with each other to form a diamond-shaped protruding block (3); the radiating groove (4) penetrates through the brake shoe (1) along the width direction of the brake shoe (1), and the radiating groove (4) is positioned in the middle of the brake shoe (1) in the length direction; still include temperature sensor (5) of bar shape, temperature sensor (5) gather in hot groove (2) along length direction embedding, at temperature sensor (5) outside parcel copper sheet (7), it has heat conduction silica gel (8) to fill between temperature sensor (5) and the surface of gathering hot groove (2), and wire (6) of temperature sensor (5) stretch out and are connected with the temperature recorder after fixing device is fixed in radiating groove (4).
2. An elevator brake shoe test apparatus as defined in claim 1, wherein: the copper sheet (7) is a red copper sheet.
3. A manufacturing apparatus of an elevator brake shoe test device according to claim 1 or 2, characterized in that: including laser head (16), clamping device (20), laser head (16) inside cavity is provided with powder inflow entrance (17) and cooling water entry (18) on it, clamping device (20) mainly by upper cover plate (10), backplate (12), baffle (13), backing plate (14) and base (15) are constituteed, backing plate (14) and baffle (13) are placed in proper order from the bottom up on base (15), backplate (12) are fixed in base (15) rear end, upper cover plate (10) are fixed on the top of backplate (12), install brake shoe fixing base (19) between base (15) and upper cover plate (10), be fixed with brake shoe (1) on brake shoe fixing base (19), the part of treating of brake shoe (1) stretches out upper cover plate (10) through top shape hole (11).
4. A method of testing an elevator brake shoe, the method comprising the steps of:
(a) manufacturing a brake shoe (1) by using a manufacturing apparatus of the elevator brake shoe test device as set forth in claim 3;
(b) the method comprises the following steps that a brake shoe (1) is installed on a car, so that the brake shoe (1) is arranged in the vertical direction, and a temperature sensor (5) is connected with a temperature recorder through a lead (6);
(c) the lift car is lifted to a preset height, wherein the descending speed of the lift car is gradually increased when the lift car freely falls, the load of the lift car is set to be 4t, and the sliding distance is set to be 660mm when the rated speed is 2.5 ms;
(d) the car triggers the action of safety tongs, and two brake shoes (1) of safety tongs can press from both sides tight guide rail and brake, and brake shoe (1) and the last production of heat of guide rail lead to the temperature to rise, and pre-buried temperature sensor (5) in gathering hot groove (2) can detect real-time temperature and give the temperature recorder to reacing the temperature rise value of safety tongs braking in-process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208690.5A CN111238853A (en) | 2020-03-23 | 2020-03-23 | Elevator brake shoe testing device, manufacturing equipment and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208690.5A CN111238853A (en) | 2020-03-23 | 2020-03-23 | Elevator brake shoe testing device, manufacturing equipment and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111238853A true CN111238853A (en) | 2020-06-05 |
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ID=70877164
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010208690.5A Withdrawn CN111238853A (en) | 2020-03-23 | 2020-03-23 | Elevator brake shoe testing device, manufacturing equipment and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111238853A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2104889A1 (en) * | 1992-12-21 | 1994-06-22 | Miles P. Lamb | Apparatus for monitoring elevator brakes |
| CN205347574U (en) * | 2016-01-26 | 2016-06-29 | 浙江机电职业技术学院 | Elevator safety tongs voussoir laser manufacturing installation |
| CN107601207A (en) * | 2017-11-06 | 2018-01-19 | 台州市特种设备监督检验中心 | A kind of elevator safety clamp brake temperature rise measuring method |
| CN207467942U (en) * | 2017-11-06 | 2018-06-08 | 台州市特种设备监督检验中心 | It is a kind of to clamp block for measuring the elevator safety gear of braking Wen Sheng |
| CN109132777A (en) * | 2018-11-13 | 2019-01-04 | 苏州默顿快速电梯有限公司 | A kind of safety tongs of elevator |
-
2020
- 2020-03-23 CN CN202010208690.5A patent/CN111238853A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2104889A1 (en) * | 1992-12-21 | 1994-06-22 | Miles P. Lamb | Apparatus for monitoring elevator brakes |
| CN205347574U (en) * | 2016-01-26 | 2016-06-29 | 浙江机电职业技术学院 | Elevator safety tongs voussoir laser manufacturing installation |
| CN107601207A (en) * | 2017-11-06 | 2018-01-19 | 台州市特种设备监督检验中心 | A kind of elevator safety clamp brake temperature rise measuring method |
| CN207467942U (en) * | 2017-11-06 | 2018-06-08 | 台州市特种设备监督检验中心 | It is a kind of to clamp block for measuring the elevator safety gear of braking Wen Sheng |
| CN109132777A (en) * | 2018-11-13 | 2019-01-04 | 苏州默顿快速电梯有限公司 | A kind of safety tongs of elevator |
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Application publication date: 20200605 |
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