Friction performance testing device for friction liner of friction type elevator

Abstract

The utility model relates to the technical field of testing equipment, in particular to a friction performance testing device for a friction liner of a friction type elevator, which comprises a bottom plate and an elevating support, and the front side of the elevating support is slidably provided with an elevating platform through an elevating device. A liner clamping device used for clamping a friction liner and a steel wire rope is arranged at the top of the lifting platform, a liner clamping sensor is arranged in the liner clamping device, a friction force sensor is arranged in the lifting device, and a controller and a measuring computer are arranged on the rear side of the lifting support. The controller is electrically connected with the lifting device, and the measuring computer is electrically connected with the liner clamping sensor and the friction force sensor.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a friction performance testing device for friction pads of a friction-type elevator. Background Technology

[0002] Friction pads are a crucial component of friction hoists, which lift materials through the friction between the lifting wire rope and the friction pads. The coefficient of friction (also known as the friction factor) between the friction pad and the wire rope is a performance indicator that determines the magnitude of the frictional force. Insufficient friction coefficient of the friction pad will cause the friction hoist to slip, leading to accidents. Therefore, there are clear standards worldwide for the friction coefficient of friction pads in friction hoists. The Ministry of Industry and Information Technology of the People's Republic of China has issued the standard JB / T10347-2015 "Friction Pads for Friction Hoists," which provides a standard for measuring the friction coefficient of friction pads. Currently, there are few devices available for testing the friction performance of friction hoist friction pads, and even fewer devices capable of conducting tests both in the field and in the laboratory.

[0003] Therefore, there is an urgent need for a device for testing the friction performance of friction pads in friction-type elevators. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the friction performance of friction pads in a friction-type elevator.

[0005] A friction performance testing device for friction lining of a friction-type hoist includes a base plate and a lifting support. A lifting platform is slidably mounted on the front side of the lifting support via a lifting device. A lining clamping device for clamping the friction lining and wire rope is mounted on the top of the lifting platform. A lining clamping sensor is installed inside the lining clamping device. A friction force sensor is installed inside the lifting device. A controller and a measuring computer are mounted on the rear side of the lifting support. The controller is electrically connected to the lifting device, and the measuring computer is electrically connected to the lining clamping sensor and the friction force sensor.

[0006] Furthermore, the pad clamping device includes a C-shaped pad groove and a pad groove adjusting seat. A test port is provided in the middle of the lifting platform. Two C-shaped pad grooves that cooperate with the test port are slidably provided on the top of the lifting platform. Pad fixing bolts that are threadedly engaged with the C-shaped pad grooves are provided through the front and rear sides of the C-shaped pad grooves. Pad fixing blocks for fixing friction pads are rotatably provided at the ends of the pad fixing bolts. Pad groove adjusting seats are provided on the outer side of the C-shaped pad grooves. Pad groove adjusting seats are fixedly provided on the top of the lifting platform. Pad groove adjusting screws that are threadedly connected to the middle of the pad groove adjusting seats are provided through the middle of the pad groove adjusting seats. The end of the pad groove adjusting screws is rotatably connected to the C-shaped pad grooves. The pad clamping sensor is located between the pad groove adjusting seat and the pad groove adjusting screws.

[0007] Furthermore, the lifting device includes a lifting slide rail, a lifting screw, a lifting screw seat, and a lifting motor. Two longitudinally parallel lifting slide rails are fixedly installed on the front side of the lifting bracket. A lifting slide seat that slides with the lifting slide rails is installed on the lifting platform. A lifting motor is fixedly installed on the top of the base plate. The output end of the lifting motor is fixedly connected to the lifting screw. The lifting screw seat is located below the lifting platform between the two lifting slide seats. The lifting screw passes through the lifting screw seat and is threaded into it. The friction sensor is located between the lifting screw seat and the lifting platform.

[0008] Furthermore, the bottom of the base plate is rotatably equipped with multiple casters.

[0009] Furthermore, a handrail is provided on the rear side of the lifting bracket.

[0010] In summary, this utility model has the following beneficial effects:

[0011] This invention relates to a pad clamping device for fixing two friction pads and bringing them close together to clamp a steel wire rope. A pad clamping sensor detects the normal force exerted by the two friction pads clamping the steel wire rope and transmits this data to a measuring computer. A controller controls a lifting device to move the lifting platform up or down, causing the two friction pads and the steel wire rope to slide relative to each other from a clamped state. A friction force sensor detects the frictional force generated during the relative movement of the friction pads and the steel wire rope and transmits this data to the measuring computer, which then calculates the friction coefficient of the friction pads. This invention, by incorporating multiple casters and handrails, facilitates movement and enables on-site testing of the friction performance of the friction pads using the lifting steel wire rope, allowing for performance testing under actual on-site conditions. Attached Figure Description

[0012] Figure 1 This is a front view of a friction performance testing device for a friction-type elevator friction liner according to the present invention;

[0013] Figure 2 This is a side view of a friction performance testing device for a friction-type elevator friction liner according to the present invention;

[0014] Figure 3 This is a rear view of a friction performance testing device for a friction-type elevator friction liner according to the present invention.

[0015] Figure 4 This is a top view of a friction performance testing device for a friction-type elevator friction liner according to the present invention.

[0016] In the diagram: 1. Base plate, 2. Lifting bracket, 3. Lifting slide rail, 4. Lifting slide seat, 5. Lifting screw, 6. Lifting screw nut, 7. Lifting motor, 8. Lifting platform, 9. C-shaped liner groove, 10. Liner fixing bolt, 11. Liner fixing block, 12. Friction liner, 13. Liner groove adjusting seat, 14. Liner groove adjusting screw, 15. Liner clamping sensor, 16. Friction sensor, 17. Controller, 18. Measuring computer, 19. Moving wheel, 20. Handrail, 21. Steel wire rope. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described as follows:

[0019] A friction performance testing device for friction pads of a friction-type hoist includes a base plate 1 and a lifting support 2. A lifting platform 8 is slidably mounted on the front side of the lifting support 2 via a lifting device. A pad clamping device for clamping the friction pad 12 and the wire rope 21 is mounted on the top of the lifting platform 8. A pad clamping sensor 15 is mounted inside the pad clamping device. A friction force sensor 16 is mounted inside the lifting device. A controller 17 and a measuring computer 18 are mounted on the rear side of the lifting support 2. The controller 17 is electrically connected to the lifting device, and the measuring computer 18 is electrically connected to the pad clamping sensor 15 and the friction force sensor 16.

[0020] In this embodiment, a pad clamping device is used to fix two friction pads 12 and bring them close together to clamp the wire rope 21. A pad clamping sensor 15 detects the normal force exerted by the two friction pads 12 clamping the wire rope 21 and transmits this data to a measuring computer 18. A controller 17 controls a lifting device to move the lifting platform 8 up or down, causing the two friction pads 12 and the wire rope 21 to slide relative to each other from a clamped state. A friction sensor 16 detects the friction force generated when the friction pads 12 and the wire rope 21 move relative to each other and transmits this data to the measuring computer 18, which then calculates the coefficient of friction of the friction pads 12. This invention employs a vertical structure, which allows for more accurate detection of the normal force exerted by the friction pads 12 clamping the wire rope 21 and the friction force generated when the friction pads 12 and the wire rope 21 move relative to each other.

[0021] The pad clamping device includes a C-shaped pad groove 9 and a pad groove adjusting seat 13. A test port 22 is provided in the middle of the lifting platform 8. Two C-shaped pad grooves 9 that cooperate with the test port 22 are slidably provided on the top of the lifting platform 8. Pad fixing bolts 10 that are threadedly connected to the front and rear sides of the C-shaped pad groove 9 are provided. Pad fixing blocks 11 for fixing friction pads 12 are rotatably provided at the ends of the pad fixing bolts 10. Pad groove adjusting seats 13 are provided on the outer side of the C-shaped pad groove 9. Pad groove adjusting seats 13 are fixedly provided on the top of the lifting platform 8. Pad groove adjusting screws 14 that are threadedly connected to the middle of the pad groove adjusting seat 13 are provided. The end of the pad groove adjusting screws 14 is rotatably connected to the C-shaped pad groove 9. A pad clamping sensor 15 is provided between the pad groove adjusting seat 13 and the pad groove adjusting screws 14.

[0022] In this embodiment, the friction pad 12 is placed between two pad fixing blocks 11 within the C-shaped pad groove 9. The two pad fixing bolts 10 are rotated sequentially, causing the pad fixing blocks 11 to move inwards, thus fixing the friction pad 12 within the C-shaped pad groove 9. A vertically positioned and taut steel wire rope 21 is placed in the test port 22 between the two friction pads 12. The two pad groove adjusting screws 14 are rotated sequentially, causing the two C-shaped pad grooves 9 and the friction pads 12 to move closer together. The two friction pads 12 clamp the steel wire rope 21. The pressure data detected by the pad clamping sensor 15 and transmitted to the measuring computer 18 is the positive pressure p of the two friction pads 12 clamping the steel wire rope 21, expressed in N.

[0023] The lifting device includes a lifting slide rail 3, a lifting screw 5, a lifting screw seat 6, and a lifting motor 7. Two longitudinally parallel lifting slide rails 3 are fixedly installed on the front side of the lifting bracket 2. A lifting slide seat 4 that slides with the lifting slide rail 3 is installed on the lifting platform 8. A lifting motor 7 is fixedly installed on the top of the base plate 1. The output end of the lifting motor 7 is fixedly connected to the lifting screw 5. The lifting screw seat 6 is located below the lifting platform 8 between the two lifting slide seats 4. The lifting screw 5 passes through the lifting screw seat 6 and is threaded with it. A friction sensor 16 is located between the lifting screw seat 6 and the lifting platform 8.

[0024] In this embodiment, the lifting motor 7 is controlled by the controller 17. The output of the lifting motor 7 drives the lifting screw 5 to rotate. The lifting screw 5, through its cooperating lifting screw seat 6, drives the lifting platform 8 to slide up or down along the slidingly fitted lifting rail 3 and lifting slide block 4. This causes the two friction pads 12 and the wire rope 21 to change from a clamped state to a relative sliding state. At this time, the pressure data detected by the friction sensor 16 and transmitted to the measuring computer 18 is the frictional force F generated when the friction pads 12 and the wire rope 21 move relative to each other, in N. The measuring computer 18 can then determine the friction coefficient μ of the friction pads 12 as μ = F / 2p.

[0025] The bottom of the base plate 1 is equipped with multiple casters 19, and the rear of the lifting bracket 2 is equipped with a handrail 20.

[0026] In this embodiment, by setting multiple movable wheels 19 and handrails 20, the present invention is easy to move, and it is easy to directly use the hoisting wire rope 21 to test the friction performance of the friction pad 12 on the hoist site and to realize the performance test under actual on-site conditions.

[0027] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0028] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

Claims

1. A friction performance testing device for friction pads of a friction-type elevator, comprising a base plate (1) and a lifting support (2), characterized in that, A lifting platform (8) is slidably provided on the front side of the lifting bracket (2) via a lifting device. A pad clamping device for clamping the friction pad (12) and the wire rope (21) is provided on the top of the lifting platform (8). A pad clamping sensor (15) is provided inside the pad clamping device. A friction sensor (16) is provided inside the lifting device. A controller (17) and a measuring computer (18) are provided on the rear side of the lifting bracket (2). The controller (17) is electrically connected to the lifting device. The measuring computer (18) is electrically connected to the pad clamping sensor (15) and the friction sensor (16).

2. The friction performance testing device for friction lining of a friction-type elevator as described in claim 1, characterized in that, The pad clamping device includes a C-shaped pad groove (9) and a pad groove adjusting seat (13). A test port (22) is provided in the middle of the lifting platform (8). Two C-shaped pad grooves (9) that cooperate with the test port (22) are slidably provided on the top of the lifting platform (8). Pad fixing bolts (10) that are threadedly connected to the front and rear sides of the C-shaped pad groove (9) are provided. A pad fixing block for fixing the friction pad (12) is rotatably provided at the end of the pad fixing bolt (10). (11) A pad groove adjusting seat (13) is provided on the outside of the C-shaped pad groove (9). The pad groove adjusting seat (13) is fixedly installed on the top of the lifting platform (8). A pad groove adjusting screw (14) is threadedly connected to the middle of the pad groove adjusting seat (13). The end of the pad groove adjusting screw (14) is rotatably connected to the C-shaped pad groove (9). The pad clamping sensor (15) is located between the pad groove adjusting seat (13) and the pad groove adjusting screw (14).

3. The friction performance testing device for friction lining of a friction-type elevator as described in claim 2, characterized in that, The lifting device includes a lifting slide rail (3), a lifting screw (5), a lifting screw seat (6), and a lifting motor (7). Two longitudinally parallel lifting slide rails (3) are fixedly installed on the front side of the lifting bracket (2). A lifting slide seat (4) that slides with the lifting slide rail (3) is installed on the lifting platform (8). A lifting motor (7) is fixedly installed on the top of the base plate (1). The output end of the lifting motor (7) is fixedly connected to the lifting screw (5). The lifting screw seat (6) is located below the lifting platform (8) between the two lifting slide seats (4). The lifting screw (5) passes through the lifting screw seat (6) and is threadedly engaged with it. The friction sensor (16) is located between the lifting screw seat (6) and the lifting platform (8).

4. The friction performance testing device for friction lining of a friction-type elevator as described in claim 3, characterized in that, The bottom of the base plate (1) is provided with multiple movable wheels (19).

5. The friction performance testing device for friction lining of a friction-type elevator as described in claim 4, characterized in that, A handrail (20) is provided on the rear side of the lifting support (2).

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