Elevator traction sheave pitch radius deviation scanning measuring instrument

Abstract

The utility model relates to the technical field of testing equipment, in particular to an elevator traction sheave pitch radius deviation scanning measuring instrument which comprises a rack, at least one mounting block mounted in the rack, an auxiliary roller rotationally mounted on the rack and a measuring assembly arranged in the mounting block. The measuring assembly comprises a displacement sensor assembled on the mounting block, a measuring rod connected with the displacement sensor and a measuring ball arranged at the end part of the measuring rod; during measurement, the auxiliary roller is arranged on the surface of the traction wheel, and the measuring ball is arranged in a rope groove of the traction wheel. The structure is simple, the operation is convenient and fast, and the replaceable modular measurement assembly is suitable for the requirements of various detection stations and various traction sheave rope groove sizes; and the sensor performs electronic acquisition, so that rapid multi-point data acquisition can be realized, the information acquisition accuracy is improved, and the quality inspection and maintenance work of measurement testers is effectively assisted.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a sweep measurement instrument for the pitch circle radius deviation of an elevator traction sheave. Background Technique

[0002] The traction sheave is one of the key components of a traction-driven elevator. There are relevant regulations for the rope grooves of the traction sheave in relevant technical standards: among them, TSGT7007-2022 "Elevator Type Test Rules" stipulates that the difference between the pitch circle diameters of the rope grooves of the traction sheave shall not be greater than 0.10 mm; GB / T31821-2015 "Technical Conditions for Scrap of Main Parts of Elevators" stipulates that if there are defects or abnormal wear in the rope grooves of the traction sheave, it shall be scrapped. It can be seen from this that relatively high requirements are put forward for the rope grooves of the traction sheave.

[0003] Due to machining errors, there will be deviations in the pitch circle diameters of the rope grooves of the traction sheave. During use, normal wear or abnormal wear of mechanical components will also exacerbate the deviations in the pitch circle diameters of the rope grooves of the traction sheave.

[0004] Chinese Utility Model Patent CN209055047U, a diameter and deviation measuring instrument for the pitch circle of a traction sheave rope groove, includes a detachable spherical measuring head, an arch-shaped measuring base frame, a micrometer, and a standard plane for pre-measurement calibration and zeroing. The spherical measuring head includes a spherical measuring head and an integrally formed cylindrical connecting rod. The surface of the connecting rod away from the measuring head is provided with an external thread of a certain length. The diameter of the spherical measuring head matches the arc diameter of the rope groove on the surface of the traction sheave. The arch-shaped measuring base frame includes two measuring frame supports at the bottom and a fixture part for fixing the micrometer at the top. The fixture clamps the micrometer through fasteners. The measuring rod of the micrometer is provided with an internal thread at the end away from the micrometer, which is threadedly connected and matched with the connecting rod of the spherical measuring head;

[0005] Although the above-mentioned prior art provides a technical solution idea, in the specific implementation process, it has fewer measuring stations, does not meet the measurement requirements of multiple rope grooves, and uses a micrometer as the data collection end. There are relatively large errors in data processing and reality, and the spherical measuring head with a fixed threaded connection and the arch-shaped measuring base directly in hard contact with the rope groove are also likely to cause damage to the rope groove itself; Therefore, there is an urgent need for a detection instrument that is convenient to measure, meets the measurement requirements of multiple stations, and reduces damage to the wheel body and rope groove. Content of the Utility Model

[0006] The purpose of the utility model is to provide a sweep measurement instrument for the pitch circle radius deviation of an elevator traction sheave with a delicate structure, multi-station measurement, and convenient operation.

[0007] To achieve the above purpose, the utility model provides the following technical solutions;

[0008] An elevator traction wheel pitch circle radius deviation scanning and measuring instrument, comprising a frame, at least one mounting block mounted in the frame, an auxiliary roller rotatably mounted on the frame, and a measuring assembly arranged in the mounting block;

[0009] The measuring assembly includes a displacement sensor assembled in the mounting block, a measuring rod connected to the displacement sensor, and a measuring ball arranged at the end of the measuring rod; during measurement, the auxiliary roller is arranged on the surface of the traction wheel, and the measuring ball is arranged in the rope groove of the traction wheel.

[0010] Furthermore, the frame includes a group of frame side plates and a mounting connecting rod detachably connected to the mounting block;

[0011] Furthermore, auxiliary support arms are evenly arranged on both sides of the lower ends of the frame side plates; the auxiliary support arms are rotatably mounted with the auxiliary rollers;

[0012] Furthermore, there are multiple mounting blocks, and the multiple mounting blocks are sleeved on the mounting connecting rod by mounting holes;

[0013] Furthermore, the mounting block is also provided with an inner cavity, the displacement sensor is installed on one side of the inner cavity, and the measuring rod is slidably assembled on the other side of the inner cavity;

[0014] Furthermore, the mounting block is also provided with a connecting ring, and the sensor body is installed on one side of the inner cavity by the connecting ring;

[0015] Furthermore, a buffer spring is arranged in the inner cavity, one end of the buffer spring is connected to the connecting ring, the other end contacts the measuring rod, and the measuring rod contacts the displacement rod.

[0016] Furthermore, a movable groove is opened on the measuring rod, and the measuring rod is assembled in the inner cavity by a guide pin passing through the movable groove;

[0017] Furthermore, a ball mounting seat is arranged at the end of the measuring rod, and a ball fastening seat detachably connected to the ball mounting seat, and the measuring ball is installed in the ball groove between the ball mounting seat and the ball fastening seat;

[0018] Furthermore, a standard cushion block is arranged between adjacent mounting blocks to realize equidistant installation of the mounting blocks;

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] The utility model provides a sweep measurement instrument for the deviation of the pitch circle radius of an elevator traction sheave. Multiple groups of measurement components are installed on a frame and perform circular motion around the traction sheave. At the same time, an auxiliary roller makes rolling contact with the outer circumferential line of the traction sheave, and each measuring ball rolls in the corresponding rope groove of the traction sheave; with the assistance of the frame and the auxiliary roller, during measurement, the axis of the measurement component is always perpendicular to and intersects with the axis of the traction sheave; due to wear or abnormal deformation of the rope groove of the traction sheave to be measured, during the circular motion of the frame, the rope groove of the traction sheave will push the measuring ball, and then push the measuring rod. After the displacement of the measuring rod is transmitted to the displacement sensor, the displacement change is collected by the displacement sensor, so as to realize the measurement and collection of the wear and deformation of the rope groove of the traction sheave.

[0021] This sweep measurement instrument for the deviation of the pitch circle radius of an elevator traction sheave has a concise structure and convenient operation. The replaceable modular measurement components can meet the requirements of various detection workstations and various rope groove sizes of traction sheaves; and with electronic acquisition by sensors, rapid multi-point data acquisition can be realized, improving the accuracy of information acquisition and effectively assisting the quality inspection and maintenance work of measurement and testing personnel. Brief Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the utility model;

[0023] Figure 2 is the structural schematic diagram of the frame of the utility model;

[0024] Figure 3 is the structural schematic diagram of the measurement component of the utility model;

[0025] Figure 4 is the internal structural schematic diagram of the measurement component of the utility model;

[0026] Figure 5 is the exploded structural schematic diagram of the measurement component of the utility model;

[0027] Figure 6 is the exploded partial structural schematic diagram of the measuring ball of the utility model;

[0028] Figure 7 is the installation and working state schematic diagram of the utility model. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0030] Refer to Figure 1-7As shown in the figure, an elevator traction wheel pitch circle radius deviation scanning and measuring instrument includes a frame 1, at least one mounting block 4 installed in the frame 1, an auxiliary roller 3 rotatably installed on the frame 1, and a measuring assembly 2 arranged in the mounting block 4; the measuring assembly 2 includes a displacement sensor 21 assembled in the mounting block 4, a measuring rod 23 connected to the displacement sensor 21, and a measuring ball 22 arranged at the end of the measuring rod 23; during measurement, the auxiliary roller 3 is arranged on the surface of the traction wheel, and the measuring ball 22 is arranged in the rope groove of the traction wheel;

[0031] In actual use of the present utility model, multiple groups of measuring assemblies 2 are installed on the frame 1 and perform circular motion around the traction wheel 5. At the same time, the auxiliary roller 3 makes rolling contact with the outer circumferential line of the traction wheel 5, and each measuring ball 22 rolls in the corresponding rope groove of the traction wheel 5; with the assistance of the frame 1 and the auxiliary roller 3, during measurement, the axis of the measuring assembly 2 is always perpendicular to and intersects with the axis of the traction wheel 5; due to wear or abnormal deformation of the rope groove of the traction wheel 5 to be measured, during the circular motion of the frame 1, the rope groove of the traction wheel 5 will push the measuring ball 22, and then push the measuring rod 23. After the displacement of the measuring rod 23 is transmitted to the displacement sensor 21, the displacement change is collected by the displacement sensor 21, so as to realize the measurement and collection of the wear and deformation of the rope groove of the traction wheel 5.

[0032] This elevator traction wheel pitch circle radius deviation scanning and measuring instrument has a simple structure and convenient operation. The replaceable modular measuring assembly 2 can meet the needs of various detection workstations and various traction wheel rope groove sizes; and with electronic sensor collection, it can realize rapid multi-point data acquisition, improve the accuracy of information acquisition, and effectively assist the quality inspection and maintenance work of measurement and testing personnel.

[0033] In this embodiment, the frame 1 includes a group of frame side plates 11 and a mounting link 12 detachably connected to the mounting block 4; both sides of the lower end of the frame side plates 11 are evenly provided with auxiliary support arms 13; the auxiliary support arms 13 are all rotatably installed with the auxiliary roller 3; a group of the frame side plates 11 are assembled on both sides of the mounting link 12 in parallel by bolts; the lower ends of the frame side plates 11 are respectively provided with auxiliary support arms 13; the auxiliary roller 3 is rotatably installed on the auxiliary support arms 13 through the mounting link 12; by using bolt assembly, rapid and convenient replacement, disassembly and assembly can be realized, and the corresponding model and size of the mounting link 12 can be selected according to needs to adapt to different measurement requirements; the auxiliary roller 3 is rotatably installed through the separately provided auxiliary support arms 13, which can realize the rolling contact between the frame 1 and the traction rope wheel 5 during the test process, and avoid scratching or damaging the product to be tested by the frame 1.

[0034] In this embodiment, a plurality of mounting blocks 4 are provided, and the plurality of mounting blocks 4 are sleeved on the mounting link 12 by mounting holes 41;

[0035] In this embodiment, the displacement sensor 21 is a pen-shaped and reboundable displacement sensor. Its sensor body 213 is fixedly installed in the built-in cavity 43. The displacement rod 211 for feedback of the displacement change amount extends into and is installed in the sensor body 21, and the return spring 212 provides a return force for the displacement rod 211. The displacement rod 211 abuts against the measuring rod 23 to better sense and transmit the displacement change amount caused by the measuring rod 23.

[0036] In this embodiment, the mounting block 4 is further provided with a built-in cavity 43. The displacement sensor 21 is installed on one side of the built-in cavity 43, and the measuring rod 23 is slidably assembled on the other side of the built-in cavity 43. The mounting block 4 is further provided with a connecting ring 44, and the sensor body 213 is installed on one side of the built-in cavity 43 by using the connecting ring 44. In this embodiment, the built-in cavity 43 is provided with a buffer spring 214. One end of the buffer spring 214 is connected to the connecting ring 44, and the other end contacts the measuring rod 23. The measuring rod 23 contacts the displacement rod 211. The measuring rod 23 is provided with a movable groove 231, and the measuring rod 23 is assembled in the built-in cavity 43 by using a guide pin 42 passing through the movable groove 231.

[0037] The inner thread of the connecting ring 44 is used to install the sensor body 213, and the outer ring is used to assemble and pre-install the buffer spring 214. During installation, the end of the measuring rod 23 extends into the built-in cavity 43 from below. The measuring rod 23 is pressed against the buffer spring 214 and abuts against the movable rod 211 to ensure that the sensor body 213 can obtain the displacement change. Then, the guide pin 42 is inserted into the movable groove 231 to complete the assembly. Through the movable groove 231, the movement range of the measuring rod 23 can be determined. The use of the guide pin 42 can realize the rapid replacement of the measuring rod 23 to meet the installation requirements of various measuring rods 23 and adapt to rope grooves of various sizes.

[0038] In this embodiment, a ball mounting seat 232 and a ball fastening seat 233 detachably connected to the ball mounting seat 232 are provided at the end of the measuring rod 23. The measuring ball 22 is installed in the ball groove between the ball mounting seat 232 and the ball fastening seat 233. The measuring ball 22 is essentially a component with high-frequency contact and there is a risk of wear and damage. The detachable installation is adopted, which is convenient for replacement and maintenance.

[0039] In this embodiment, several of the mounting connecting rods 12 are of equal length, and standard pads are arranged between adjacent mounting blocks 4 to achieve equidistant installation of the mounting blocks 4.

[0040] The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the scope defined by the spirit of the present invention.

Claims

1. An elevator traction sheave pitch radius deviation scanning and measuring instrument, characterized in that: It comprises a frame (1), at least one mounting block (4) mounted in the frame (1), an auxiliary roller (3) rotatably mounted on the frame (1), and a measuring component (2) arranged in the mounting block (4); The measuring assembly (2) comprises a displacement sensor (21) mounted on a mounting block (4), a measuring rod (23) connected to the displacement sensor (21), and a measuring ball (22) arranged at the end of the measuring rod (23); during measurement, the auxiliary roller (3) is arranged on the surface of the traction wheel, and the measuring ball (22) is arranged in the rope groove of the traction wheel.

2. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 1, characterized in that: The frame (1) comprises a set of frame side panels (11) and a mounting connecting rod (12) detachably connected to the mounting block (4).

3. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 2, characterized in that: Auxiliary support arms (13) are respectively arranged on both sides of the lower end of the frame side plate (11); and the auxiliary support arms (13) are rotatably mounted with the auxiliary rollers (3).

4. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 2, characterized in that: A plurality of the mounting blocks (4) are provided, and the plurality of mounting blocks (4) are sleeved on the mounting connecting rod (12) using mounting holes (41).

5. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 2, characterized in that: The mounting block (4) is further provided with a built-in cavity (43), the displacement sensor (21) is mounted on one side of the built-in cavity (43), and the measuring rod (23) is slidably mounted on the other side of the built-in cavity (43).

6. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 5, characterized in that: The mounting block (4) is further provided with a connecting ring (44), and the sensor body (213) is mounted on one side of the built-in cavity (43) using the connecting ring (44).

7. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 6, characterized in that: The built-in cavity (43) is provided with a buffer spring (214), one end of the buffer spring (214) is connected to the connecting ring (44), and the other end is in contact with the measuring rod (23), and the measuring rod (23) is in contact with the displacement rod (211).

8. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 7, characterized in that: The measuring rod (23) is provided with a movable groove (231), and the measuring rod (23) is assembled in the built-in cavity (43) by passing a guide pin (42) through the movable groove (231).

9. The elevator traction sheave pitch radius deviation scanning and measuring instrument according to claim 1, characterized in that: A ball mounting seat (232) and a ball buckling seat (233) detachably connected to the ball mounting seat (232) are provided at the end of the measuring rod (23), and the measuring ball (22) is mounted in a ball groove between the ball mounting seat (232) and the ball buckling seat (233).

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