Slewing bearing raceway measuring device

Abstract

The utility model belongs to the technical field of measuring tools, and relates to a slewing bearing raceway measuring device which comprises a measuring rod, a fixed measuring head, a base, a movable seat, a gauge stand, a spring, a movable measuring head and a measuring gauge, the fixed measuring head is installed at one end of the measuring rod, and the base is installed at the other end of the measuring rod; the movable seat is movably installed on the base, the meter frame is arranged on the base, the measuring meter is installed on the meter frame, the movable measuring head is installed on the movable seat, and the center of the movable measuring head and the center of the fixed measuring head are both located on the extension line of a pointer of the measuring meter; a spring is arranged between the meter frame and the base, and when the movable seat moves towards the measuring meter, the movable seat can press the spring and then touch a pointer of the measuring meter. The movable measuring ball is mounted on the movable seat, so that a worker can finish measuring operation more easily, the complexity and difficulty of operation are reduced, and the measuring result is more accurate.

Description

Technical Field

[0001] The utility model relates to a slewing bearing raceway measuring device, belonging to the technical field of measuring tools. Background Art

[0002] The slewing bearing is a large bearing that can withstand combined loads. It is an important transmission component for relative rotational motion between two objects, and needs to withstand torques in different directions. The slewing bearing usually consists of an outer ring, an inner ring, rolling elements and a sealing belt. The rolling elements move in the raceways of the outer and inner rings. The raceway is the key structure of the slewing bearing, and its coordinated movement with the measuring head enables the bearing to rotate. The measurement accuracy of the inner and outer ring raceways is directly related to the rotation accuracy and service life of the bearing. Therefore, the measurement and measurement accuracy of the raceway diameter are crucial.

[0003] like Figure 1 As shown, the spring 6 of the existing raceway measuring device is directly connected to the mobile measuring head 7 and the measuring gauge 8. When the mobile measuring head 7 is subjected to an external force and moves, the spring 6 is deformed, causing the moving rod 15 to touch the pointer of the measuring gauge 8, causing the pointer to move accordingly, thereby obtaining the inner diameter of the raceway by reading the value of the measuring gauge. However, this measuring device has the following disadvantages:

[0004] (1) When workers use this kind of roller measuring device to measure, they need to manually support the mobile measuring head and insert it into the roller by compressing the spring. The workers also need to adjust the contact tightness between the mobile measuring head and the roller at the same time. However, different workers apply different forces, which may cause inconsistent compression of the spring, resulting in large differences in measurement results and low accuracy of the test results.

[0005] (2) During the measurement process, the mobile measuring head needs to be stably and accurately pressed against the raceway to ensure the reliability of the measurement results. However, long-term use will cause fatigue in the spring, and its elasticity and recovery ability will gradually weaken. Over time, the spring may not be able to provide a stable and appropriate clamping force, which directly affects the measurement accuracy. Therefore, engineers and technicians must regularly inspect and maintain the springs, replace aged or damaged springs, and ensure that they are always in the best working condition. However, when replacing the spring, the existing measuring device needs to disassemble the mobile measuring head and the moving rod before replacement, and the replacement process is complicated. Utility Model Content

[0006] The purpose of the utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0007] The technical solution provided by the utility model is as follows: a slewing bearing raceway measuring device, comprising a measuring rod, a fixed measuring head, a base, a movable seat, a table frame, a spring, a movable measuring head and a measuring table, wherein the fixed measuring head is mounted on one end of the measuring rod, and the base is mounted on the other end of the measuring rod; the movable seat is movably mounted on the base, the table frame is arranged on the base, the measuring table is mounted on the table frame, the movable measuring head is mounted on the movable seat, and the center of the movable measuring head and the center of the fixed measuring head are both on the extension line of the pointer of the measuring table; a spring is arranged between the table frame and the base, and when the movable seat moves toward the direction of the measuring table, the spring can be compressed to touch the pointer of the measuring table.

[0008] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects: the mobile measuring head of the utility model is installed on a mobile seat, and during the measurement process, the mobile seat drives the mobile measuring head to slide a distance toward the measuring table first, and then touches the pointer of the measuring table. When the mobile measuring ball is installed into the measuring raceway, the worker does not need to manually support the mobile measuring head. Through the cooperation between the mobile seat and the spring, the mobile measuring head can automatically come into close contact with the slewing bearing raceway to be measured, thereby significantly reducing the influence of the difference in the workers' hand strength on the measurement result, and the measurement result is more accurate. In addition, by installing the mobile measuring ball on the mobile seat, the worker can complete the measurement operation more easily, reducing the complexity and difficulty of the operation.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, one end of the spring is fixedly connected to the watch frame, and a slot is provided on the base at a side close to the spring, and the other end of the spring is inserted into the slot.

[0011] The beneficial effect of adopting the above further scheme is that the slot can realize the stable installation of the spring, and when the spring becomes fatigued due to long-term use, resulting in the weakening of its elasticity and restoring force, which in turn affects the measurement accuracy, it is only necessary to compress the spring, remove it from the slot, and then remove it from the table frame. Workers can easily replace the spring. The entire replacement process is simple and convenient, does not require complicated operations or special tools, and greatly reduces maintenance costs and time.

[0012] Furthermore, a slideway is provided on the base, and a slider matching with the slideway is provided at the bottom of the movable seat, so that the movable seat can move back and forth along the slideway.

[0013] The beneficial effect of adopting the above further solution is that, through the coordinated use of the slideway and the slider, the movement of the movable seat is more stable and controllable, which helps to ensure that the contact between the movable measuring head and the raceway is more stable and accurate, thereby improving the measurement accuracy.

[0014] Furthermore, a limit baffle is provided on the base, and the limit baffle is provided at an end of the movable seat away from the watch frame.

[0015] The beneficial effect of adopting the above further solution is that the limit baffle can effectively prevent the movable seat from accidentally sliding out of the slideway during the sliding process.

[0016] Furthermore, the mobile measuring head is a spherical structure, a hemispherical structure, a cylindrical structure, a trapezoidal structure or a conical structure.

[0017] The beneficial effect of adopting the above further solution is that, by adopting mobile measuring heads of various structures, the utility model can adapt to different forms of raceways, thereby achieving accurate measurement of various raceways.

[0018] Furthermore, the fixed measuring head is a spherical structure, a hemispherical structure, a cylindrical structure, a trapezoidal structure or a conical structure.

[0019] The beneficial effect of adopting the above further solution is that, by adopting mobile measuring heads of various structures, the utility model can adapt to different forms of raceways, thereby achieving accurate measurement of various raceways.

[0020] Furthermore, it also includes a ruler frame, one end of which is fixed to the measuring rod through a top screw, and the fixed measuring head is fixed to the other end of the ruler frame.

[0021] The beneficial effect of adopting the above further scheme is that before measurement, the position of the ruler frame on the measuring rod is first adjusted so that the distance between the movable measuring ball and the fixed measuring ball matches the diameter of the slewing bearing raceway to be measured, and then the ruler frame is fixed to the measuring rod by a top screw.

[0022] Furthermore, the measuring gauge is a dial gauge or a micrometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model 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 embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1It is a structural schematic diagram of an existing slewing bearing raceway measuring device;

[0025] Figure 2 It is a structural schematic diagram of the slewing bearing raceway measuring device of the utility model;

[0026] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0027] Figure 4 It is a schematic diagram of measuring a slewing bearing raceway using the slewing bearing raceway measuring device of the utility model;

[0028] In the figure, 1, measuring rod; 2, fixed measuring head; 3, base; 4, moving seat; 5, table frame; 6, spring; 7, moving measuring head; 8, measuring table; 9, slot; 10, slideway; 11, slider; 12, limit baffle; 13, slewing bearing raceway to be measured; 14, ruler frame; 15, moving rod. DETAILED DESCRIPTION

[0029] like Figure 1 As shown, the spring 6 of the existing raceway measuring device is directly connected to the mobile measuring head 7 and the measuring gauge 8. When the mobile measuring head 7 is subjected to an external force and moves, the spring 6 is deformed, causing the moving rod 15 to touch the pointer of the measuring gauge 8, causing the pointer to move accordingly, thereby obtaining the inner diameter of the raceway by reading the value of the measuring gauge. When workers use this raceway measuring device for measurement, they need to manually support the mobile measuring head first, resulting in inaccurate measurement results, and the spring replacement process of this measuring device is complicated.

[0030] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] like Figure 2 and Figure 3 As shown, a slewing bearing raceway measuring device includes a measuring rod 1, a fixed measuring head 2, a base 3, a movable base 4, a table frame 5, a spring 6, a movable measuring head 7 and a measuring table 8, wherein the fixed measuring head 2 is mounted on one end of the measuring rod 1, and the base 3 is mounted on the other end of the measuring rod 1; the movable base 4 is movably mounted on the base 3, the table frame 5 is arranged on the base 3, the measuring table 8 is mounted on the table frame 5, the movable measuring head 7 is mounted on the movable base 4, and the center of the movable measuring head 7 and the center of the fixed measuring head 2 are both on the extension line of the pointer of the measuring table 8; a spring 6 is provided between the table frame 5 and the base 3, and when the movable base 4 moves toward the direction of the measuring table 8, the spring 6 can be compressed to touch the pointer of the measuring table 8.

[0032] More specifically, the raceway measuring device further comprises a ruler frame 14 , one end of which is fixed to the measuring rod 1 via a top screw, and the fixed measuring head 2 is fixed to the other end of the ruler frame 14 .

[0033] One end of the spring 6 is fixedly connected to the watch frame 5 , and the other end of the spring 6 is a free end. A slot 9 is provided on the base 3 on a side close to the spring 6 , and the free end of the spring 6 is inserted into the slot 9 .

[0034] The base 3 is provided with a slideway 10 , and the bottom of the movable seat 4 is provided with a slider 11 matched with the slideway 10 , so that the movable seat 4 can move back and forth along the slideway 10 .

[0035] The base 3 is further provided with a limit baffle 12 , and the limit baffle 12 is arranged at an end of the movable seat 4 away from the watch frame 5 .

[0036] In the embodiment of the utility model, the shape of the mobile measuring head 7 is not limited. The mobile measuring head 7 can be a spherical structure, a hemispherical structure, a cylindrical structure, a trapezoidal structure or a conical structure. The appropriate structure of the mobile measuring head 7 can be selected according to the shape and characteristics of different raceways.

[0037] In the embodiment of the utility model, the shape of the fixed measuring head 2 is not limited, and the fixed measuring head 2 is a spherical structure, a hemispherical structure, a cylindrical structure, a trapezoidal structure or a conical structure. The appropriate structure of the mobile measuring head 7 can be selected according to the shape and characteristics of different raceways.

[0038] In the embodiment of the present invention, the structure of the measuring gauge 8 is not limited, and the measuring gauge 8 can be a dial gauge or a micrometer. The measuring gauge 8 is selected according to the measurement accuracy requirements, and as long as the measurement accuracy requirements are met, it should be within the protection scope of the present invention.

[0039] like Figure 4 As shown, the working method of the slewing bearing raceway measuring device of the utility model is as follows:

[0040] When using the raceway measuring device for measurement, it is first necessary to adjust the position of the ruler frame 14 on the measuring rod 1 to ensure that the distance between the mobile measuring ball and the fixed measuring ball matches the diameter of the slewing bearing raceway 13 to be measured. Then, the ruler frame 14 is fixed to the measuring rod 1 by means of a jackscrew to maintain stability during the measurement process.

[0041] Next, the fixed measuring head 2 is inserted into the raceway on one side of the inner ring of the bearing to be measured. Then, the moving seat 4 drives the moving measuring head 7 to slide towards the measuring table 8 for a distance and then compresses the spring 6, so that the moving measuring ball is tightened inward with the movement of the moving seat 4 and then pushed into the raceway on the other side of the inner ring of the bearing to be measured.

[0042] Rotate the inner ring of the bearing to be measured and keep the moving measuring ball and the fixed measuring ball in close contact with the raceway. During the rotation, read the change value on the measuring gauge 8. The maximum value read is taken as the actual value of the diameter of the inner ring raceway of the bearing to be measured. This ensures the accuracy of the measurement results.

[0043] After the measurement is completed, the spring 6 tightens the movable measuring ball inward to make it withdraw from the raceway of the measured bearing. At this time, the entire raceway measuring device can be taken out. At the same time, the movable seat 4 is reset under the rebound force of the spring 6, and the limit baffle 12 can limit the reset stroke of the movable seat 4 to ensure the normal use of the device.

[0044] The entire measuring process is simple and easy, and can quickly and accurately complete the measurement of the raceway diameter.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A slewing bearing raceway measuring device, characterized in that: The invention comprises a measuring rod (1), a fixed measuring head (2), a base (3), a movable base (4), a table frame (5), a spring (6), a movable measuring head (7) and a measuring table (8), wherein the fixed measuring head (2) is mounted on one end of the measuring rod (1), and the base (3) is mounted on the other end of the measuring rod (1); the movable base (4) is movably mounted on the base (3), the table frame (5) is arranged on the base (3), the measuring table (8) is mounted on the table frame (5), the movable measuring head (7) is mounted on the movable base (4), and the center of the movable measuring head (7) and the center of the fixed measuring head (2) are both on the extension line of the pointer of the measuring table (8); a spring (6) is arranged between the table frame (5) and the base (3), and when the movable base (4) moves in the direction of the measuring table (8), the spring (6) can be compressed to touch the pointer of the measuring table (8).

2. The slewing bearing raceway measuring device according to claim 1, characterized in that: One end of the spring (6) is fixedly connected to the watch frame (5), and the other end of the spring (6) is a free end. A slot (9) is provided on the base (3) on a side close to the spring (6), and the free end of the spring (6) is inserted into the slot (9).

3. The slewing bearing raceway measuring device according to claim 1, characterized in that: The base (3) is provided with a slideway (10), the bottom of the movable seat (4) is provided with a slider (11) matched with the slideway (10), and the movable seat (4) can move back and forth along the slideway (10).

4. The slewing bearing raceway measuring device according to any one of claims 1 to 3, characterized in that: The base (3) is also provided with a limit baffle (12), and the limit baffle (12) is arranged on an end of the movable seat (4) away from the watch frame (5).

5. The slewing bearing raceway measuring device according to any one of claims 1 to 3, characterized in that: The mobile measuring head (7) is a spherical structure, a hemispherical structure, a cylindrical structure, a trapezoidal structure or a conical structure.

6. The slewing bearing raceway measuring device according to claim 4, characterized in that: The fixed measuring head (2) is a spherical structure, a hemispherical structure, a cylindrical structure, a trapezoidal structure or a conical structure.

7. The slewing bearing raceway measuring device according to claim 1, characterized in that: It also comprises a ruler frame (14), one end of which is fixed to the measuring rod (1) via a top screw, and the fixed measuring head (2) is fixed to the other end of the ruler frame (14).

8. The slewing bearing raceway measuring device according to claim 1, characterized in that: The measuring gauge (8) is a dial gauge or a micrometer.

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