阅读说明：本技术 一种离心泵泵头圆跳动度测量工装及方法 (Tool and method for measuring circle run-out degree of pump head of centrifugal pump ) 是由 郭俊雄 张博 梁大平 陈伟良 于 2021-08-25 设计创作，主要内容包括：本发明提供了一种离心泵泵头圆跳动度测量工装及方法,根据泵头的内径尺寸,在基准板上选取对应的定位基准圆；前后移动定位销,使得滚动轴承体外圆与选定的定位基准圆相切；旋转锁紧插销带动定位锁紧体旋转,锁紧定位销；将泵头电机端朝下放置在滑块上,移动泵头使得泵头的端面止口内径与2个滚动轴承体相切,定位泵头圆心；旋转泵头使用通用量具测量泵头圆跳动。本发明的有益效果为：本发明实现检测工装通用化,一套工装即可实现对不同内径零件的检测,节省场地及制作成本,并且操作简单快捷,效率高；同时利用双轴承体对零件进行自定心,排除零件内圆尺寸波动对检测精度的影响,提高检测准确性；有效避免工装磨损问题发生,减少对检测人员的技术要求,提高操作便捷性和准确性。(The invention provides a centrifugal pump head circle run-out measuring tool and a method, wherein a corresponding positioning reference circle is selected on a reference plate according to the inner diameter size of a pump head; moving the positioning pin back and forth to enable the excircle of the rolling bearing body to be tangent to the selected positioning reference circle; the locking bolt is rotated to drive the positioning locking body to rotate, and the positioning pin is locked; placing the end of a pump head motor downwards on a sliding block, moving the pump head to ensure that the inner diameter of a front end face spigot of the pump head is tangent to 2 rolling bearing bodies, and positioning the circle center of the pump head; the rotary pump head uses a universal measuring tool to measure pump head circle run out. The invention has the beneficial effects that: the detection tool is universal, the detection of parts with different inner diameters can be realized by one tool, the field and the manufacturing cost are saved, the operation is simple and rapid, and the efficiency is high; meanwhile, the double bearing bodies are utilized to perform self-centering on the parts, so that the influence of the size fluctuation of the inner circle of the parts on the detection precision is eliminated, and the detection accuracy is improved; the problem of tool abrasion is effectively avoided, the technical requirements on detection personnel are reduced, and the convenience and accuracy in operation are improved.)

1. The utility model provides a centrifugal pump head circle degree of beating measures frock which characterized in that: the measuring tool mainly comprises a reference plate (3), a positioning pin (6), a slide block (7), a positioning locking body (4), a rolling bearing body (5) and a universal measuring tool (9), wherein two guide rail grooves (3-1) which are arranged at 90 degrees are formed in the reference plate (3), guide rails which are in sliding fit with the guide rail grooves (3-1) are respectively arranged at the lower ends of the two positioning pins (6), the positioning locking body (4) is connected to the positioning pin (6) in a threaded manner, the rolling bearing body (5) is connected to the positioning locking body (4), and the rolling bearing body (5) is used for being matched with the inner diameter of an end face spigot of a pump head (8); the reference plate (3) is provided with a sliding block (7) for placing a pump head (8); the reference plate (3) is provided with a plurality of concentric positioning reference circles (3-2), and the outer circle of the rolling bearing body (5) is tangent to a selected one of the positioning reference circles (3-2) by moving the positioning pin (6) back and forth.

2. The centrifugal pump head circle runout degree measuring tool of claim 1, characterized in that: benchmark board (3) be connected with bracing piece (2), when bracing piece (2) and benchmark board (3) level were placed, benchmark board (3) personally submitted the slope setting with the level.

3. The centrifugal pump head circle runout degree measuring tool of claim 1, characterized in that: the number of the sliding blocks (7) is 3, the sliding blocks are uniformly distributed on the reference plate (3), and the sliding blocks (7) and the guide rail grooves (3-1) are arranged in a staggered mode.

4. The centrifugal pump head circle runout degree measuring tool of claim 1, characterized in that: the height difference exists between the rolling bearing body (5) and the sliding block (7), and the upper surface of the rolling bearing body (5) is higher than that of the sliding block (7).

5. The centrifugal pump head circle runout degree measuring tool of claim 1, characterized in that: the positioning locking body (4) is provided with a bolt hole matched with the locking bolt (1), and the positioning locking body (4) is driven to rotate through the locking bolt (1) to realize locking of the positioning pin (6).

6. A measuring method adopting the centrifugal pump head roundness runout measuring tool of any one of claims 1 to 5, characterized in that: the method comprises the following steps: selecting a corresponding positioning reference circle (3-2) on the reference plate (3) according to the inner diameter size of the pump head (8); the positioning pin (6) is moved back and forth, so that the excircle of the rolling bearing body (5) is tangent to the selected positioning reference circle (3-2); the locking bolt (1) is rotated to drive the positioning locking body (4) to rotate, and the positioning pin (6) is locked; placing the end of a pump head motor downwards on a sliding block (7), moving a pump head (8) to ensure that the inner diameter of a front end face spigot of the pump head (8) is tangent to 2 rolling bearing bodies (5), and positioning the circle center of the pump head; the pump head (8) is rotated, and the pump head circle run-out is measured by using a universal measuring tool (9).

Technical Field

The invention relates to the field of centrifugal pumps, in particular to a tool and a method for measuring the circular runout of a pump head of a centrifugal pump.

Background

At present, a common pump head circle run-out measuring method is that a boss tool is matched with a pump head concave spigot, and positioning and rotation are achieved while a dial indicator is used for measuring run-out. The method is limited by boss tools, parts with different sizes need to be separately manufactured into corresponding boss tools for measurement, and meanwhile, the parts cannot realize self-centering in the positioning process, so that certain errors exist in the measurement result.

The pump head circle is beated and is had important influence to the holistic noise of water pump, vibration. The pump head circular runout is timely and accurately measured in the production and processing process, and the processing technology is adjusted to ensure the quality of parts, so that the vibration and noise of the pump are improved, and the pump can stably and reliably run.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a centrifugal pump head circle run-out degree measuring tool and method, which are mainly used for measuring the run-out of a pump head connecting surface circle.

The object of the present invention is achieved by the following technical means. A centrifugal pump head circle run-out degree measuring tool mainly comprises a reference plate, positioning pins, a sliding block, a positioning locking body, a rolling bearing body and a universal measuring tool, wherein two guide rail grooves which are arranged at 90 degrees are formed in the reference plate, guide rails which are in sliding fit with the guide rail grooves are respectively arranged at the lower ends of the two positioning pins, the positioning pins are in threaded connection with the positioning locking body, the rolling bearing body is connected onto the positioning locking body, and the rolling bearing body is used for being matched with the inner diameter of a front end face spigot of a pump head; the reference plate is provided with a sliding block for placing a pump head; the reference plate is provided with a plurality of concentric positioning reference circles, and the outer circle of the rolling bearing body is tangent to a selected one of the positioning reference circles by moving the positioning pin back and forth.

Preferably, the reference plate is connected with a support rod, and when the support rod and the reference plate are horizontally placed, the reference plate and the horizontal plane are obliquely arranged.

Preferably, the number of the sliding blocks is 3, the sliding blocks are uniformly distributed on the reference plate, and the sliding blocks and the guide rail grooves are arranged in a staggered mode.

Preferably, there is a height difference between the rolling bearing body and the slider, and the upper surface of the rolling bearing body is higher than the upper surface of the slider.

Preferably, the positioning locking body is provided with a bolt hole matched with the locking bolt, and the positioning locking body is driven to rotate through the locking bolt so as to realize locking of the positioning pin.

The invention also provides a method for measuring the pump head circle run-out degree of the centrifugal pump, which comprises the following steps: selecting a corresponding positioning reference circle on the reference plate according to the inner diameter size of the pump head; moving the positioning pin back and forth to enable the excircle of the rolling bearing body to be tangent to the selected positioning reference circle; the locking bolt is rotated to drive the positioning locking body to rotate, and the positioning pin is locked; placing the end of a pump head motor downwards on a sliding block, moving the pump head to ensure that the inner diameter of a front end face spigot of the pump head is tangent to 2 rolling bearing bodies, and positioning the circle center of the pump head; the rotary pump head uses a universal measuring tool to measure pump head circle run out.

The invention has the beneficial effects that: the detection tool is universal, the detection of parts with different inner diameters can be realized by one tool, the field and the manufacturing cost are saved, the operation is simple and rapid, and the efficiency is high; meanwhile, the double bearing bodies are utilized to perform self-centering on the parts, so that the influence of the size fluctuation of the inner circle of the parts on the detection precision is eliminated, and the detection accuracy is improved; the problem of tool abrasion is effectively avoided, the technical requirements on detection personnel are reduced, and the convenience and accuracy in operation are improved.

Drawings

FIG. 1 is a side elevational view of the structural shaft of the present invention;

FIG. 2 is a top view of the structure of the present invention;

FIG. 3 is a schematic view of a measurement configuration of the present invention;

description of reference numerals: the device comprises a locking bolt 1, a support rod 2, a reference plate 3, a guide rail groove 3-1, a positioning reference circle 3-2, a positioning locking body 4, a rolling bearing body 5, a positioning pin 6, a sliding block 7, a pump head 8 and a universal measuring tool 9.

Detailed Description

The invention will be described in detail with reference to the following figures and examples:

as shown in fig. 1-3, a centrifugal pump head circle run-out degree measuring tool mainly comprises a reference plate 3, a positioning pin 6, a slide block 7, a positioning locking body 4, a rolling bearing body 5 and a universal measuring tool 9, wherein two guide rail grooves 3-1 arranged at 90 degrees are formed in the reference plate 3, guide rails in sliding fit with the guide rail grooves 3-1 are respectively arranged at the lower ends of the two positioning pins 6, and the reference plate 3 is connected with the positioning pin 6 through the guide rail grooves 3-1 to realize the forward and backward movement of the positioning pin so as to meet the positioning centers of pump heads with different spigot inner diameters. The two positioning pins 6 are in threaded connection with two positioning locking bodies 4, the two positioning locking bodies 4 are connected with two rolling bearing bodies 5, and the two rolling bearing bodies 5 are used for being matched with the inner diameter of a front end face spigot of the pump head 8 so as to position the center of the pump head; the invention utilizes the double rolling bearing bodies to perform self-centering on the part, eliminates the influence of the size fluctuation of the inner circle of the part on the detection precision and improves the detection accuracy. 3 sliding blocks 7 are arranged on the reference plate 3 and used for placing a pump head 8 to realize plane positioning and rotation, the sliding blocks 7 are uniformly distributed on the reference plate 3, and the sliding blocks 7 and the guide rail grooves 3-1 are arranged in a staggered mode. The datum plate 3 is provided with a plurality of concentric positioning datum circles 3-2, and the datum plate 3 can be used for processing different positioning datum circles according to different pump head end surface seam allowance inner diameters; by moving the positioning pin 6 back and forth, the outer circle of the rolling bearing body 5 is tangent to a selected one of the positioning reference circles 3-2.

The reference plate 3 be connected with bracing piece 2, when bracing piece 2 and reference plate 3 level were placed, reference plate 3 personally submitted 30 slope settings with the level. When the pump head 8 is placed on the slider 7, the rolling bearing body 5 can be tightly attached to the inner diameter of the end surface spigot of the pump head 8 under the action of gravity due to the inclined arrangement of the reference plate 3.

A height difference exists between the rolling bearing body 5 and the sliding block 7 so as to realize the positioning of the center of a circle of the pump head; specifically, the upper surface of the rolling bearing body 5 is higher than the upper surface of the slider 7; when the pump head 8 is placed on the slider 7, the rolling bearing body 5 can be fitted with the end spigot inner diameter of the pump head 8.

The positioning locking body 4 is provided with a bolt hole matched with the locking bolt 1, and the positioning locking body 4 is driven to rotate through the locking bolt 1, so that the locking of the positioning pin 6 is realized.

The invention provides a method for measuring the pump head circle run-out degree of a centrifugal pump, which comprises the following steps: selecting a positioning reference circle 3-2 on the reference plate 3 according to the inner diameter size of the measured pump head 8; the positioning pin 6 is moved back and forth to ensure that the outer circles of the two rolling bearing bodies 5 are tangent to the selected positioning reference circle 3-2, and then the locking bolt 1 rotates by 90 degrees to drive the positioning locking body 4 to rotate, so that the positioning pin 6 is locked; the end of a pump head motor is downwards placed on a sliding block 7, the pump head 8 is moved to ensure that the inner diameter of a front end face seam allowance of the pump head 8 is tangent to 2 rolling bearing bodies 5, the rolling bearing bodies 5 are tightly attached to the inner diameter of the front end face seam allowance of the pump head 8, and the pump head is automatically centered due to the adoption of double rolling bearing bodies; the universal measuring tool 9 is fixed on the reference plate 3 through a connecting piece, a measuring head of the universal measuring tool 9 is pressed on the pump head 8, the pump head 8 is rotated, and the universal measuring tool 9 is used for measuring the pump head circle run-out.

It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.