A teaching device for measuring and adjusting the vertical coaxiality of a water pump unit

Abstract

The application provides a teaching device for vertical coaxiality measurement and adjustment of a water pump unit, and belongs to the technical field of teaching devices. The device comprises a concentric circle device and a medium assembly. The medium assembly comprises a rotating seat, a lifting assembly, a receiving seat and a measuring medium. During the measurement process, the measuring tool is tightly pressed against the measuring medium in the direction of the concentric circle device. When the measuring tool is loosened, the measuring medium is automatically reset away from the concentric circle device. The teaching device for vertical coaxiality measurement and adjustment of a water pump unit is provided with a medium assembly on the concentric circle device, which avoids the abrasion and damage of the inner wall of the concentric circle device caused by the repeated measurement of the placement of the measuring tool, ensures the long-term stable measurement accuracy of the teaching device, and further meets the needs of teaching. In addition, the medium assembly adopts a single measuring medium combined with the rotating and lifting functions of the rotating seat and the lifting assembly, which facilitates the measurement of the eight measuring points of up, down, front, back, left and right, and further improves the convenience of teaching and experimental operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of teaching devices, in particular to a teaching device for measuring and adjusting the verticality and coaxiality of a water pump unit. BACKGROUND

[0002] Large vertical water pump units are widely used in water conservancy projects such as flood control, drainage, and water transfer. The stability of their operation is directly related to the kinetic energy of the project and the safety of the operation. During the installation of the unit, the verticality and coaxiality are the core indicators for evaluating the installation quality. These two indicators not only determine the vibration level, shaft wear, and overall service life of the unit, but also directly affect the efficiency and safety of the operation. If the installation precision is insufficient, it can easily cause the unit to vibrate, the shaft to wear, the efficiency to decrease, and even lead to operational failures.

[0003] Since the pump station unit is a large-scale equipment, the measurement and adjustment process not only involves precise operation, but also requires the construction personnel to have a solid theoretical foundation and rich practical experience. Therefore, in personnel training and skill training, how to effectively carry out the measurement and adjustment of verticality and coaxiality teaching has become an important link to ensure the quality and reliability of subsequent engineering.

[0004] The current common teaching method in the industry is mainly a combination of theoretical explanation and teaching devices. The teaching device simulates the key elements of a large vertical water pump unit, allowing students to intuitively understand the measurement method and adjustment process of verticality and coaxiality, and to perform experimental operations in a teaching environment. Such devices have played a certain role in teaching, but there are still deficiencies in terms of operational convenience, stability, and reliability in long-term use, especially in a high-frequency and repetitive teaching environment. The device often fails to maintain measurement accuracy for a long time, thereby failing to fully meet the needs of teaching and restricting the improvement of teaching quality.

[0005] For example, patent number CN104064105, a large vertical unit verticality and coaxiality measurement and adjustment experimental device and experimental method, measures the distance between the shaft hole and the vertical piano wire multiple times and combines calculation to determine the verticality and coaxiality, and then makes corresponding adjustments. This method has high precision in principle, but since the shaft hole itself is a high-precision part, and the measurement and adjustment of verticality and coaxiality are also high-precision work, long-term and frequent contact measurement between the measurement tool and the shaft hole during the teaching process can easily cause damage and wear to the shaft hole, reducing the precision, especially during student experimental operations, which is more likely to cause damage to the shaft hole due to improper operation. This wear not only directly reduces the measurement accuracy and stability of the device, but also affects the teaching effect and experimental quality. SUMMARY

[0006] The application provides a teaching device for measuring and adjusting the vertical coaxiality of a water pump unit, which comprises a base frame, a concentric circle device and a center finder, a medium assembly is arranged on the concentric circle device, the medium assembly comprises a rotating seat, a lifting assembly, a receiving seat and a measuring medium, the rotating seat is coaxially arranged with the concentric circle device, the lifting assembly is installed on the rotating seat, the receiving seat is installed on the lifting assembly and is used for limiting the measuring tool, the measuring medium is elastically and limitingly installed on the receiving seat along the radial direction of the concentric circle device, during the measuring process, the measuring tool abuts against the measuring medium in the direction of the concentric circle device, so that the measuring medium is located between the measuring tool and the concentric circle device, and when the measuring tool is loosened, the measuring medium is automatically reset away from the concentric circle device.

[0007] In a possible implementation manner, the measuring medium is in point contact with the concentric circle device.

[0008] In a possible implementation manner, the measuring medium can be replaced.

[0009] In a possible implementation manner, the receiving seat is provided with a bidirectional limiting area and a limiting frame, an elastic member is arranged between the limiting frame and the bidirectional limiting area, the measuring medium is inserted into the bidirectional limiting area, the limiting frame limits the measuring medium under the action of the elastic member, the freedom degree of the measuring medium is constrained in the non-sliding direction of the measuring medium, and the elastic reset force is provided in the sliding direction of the measuring medium.

[0010] In a possible implementation manner, the limiting frame comprises a base frame and a limiting column, the measuring medium comprises a base provided with a limiting hole, a contact end in a hemispherical structure is detachably installed on the side of the base close to the measuring point, and the limiting hole and the limiting column are matched to constrain the freedom degree of the measuring medium in the non-sliding direction of the measuring medium.

[0011] In a possible implementation manner, the lifting assembly comprises a mounting seat and a lifting frame, the receiving seat is fixedly installed on the lifting frame, the mounting seat is provided with a rotating column with a plurality of limiting members, the lifting frame is fixedly installed with a limiting seat with a through hole, the alignment or misalignment of the limiting members and the through hole is controlled by rotating the rotating column, and the sliding and limiting fixation of the lifting frame are controlled.

[0012] In a possible implementation manner, a plurality of restraining members are arranged on the concentric circle device in a circumferential positioning and distribution mode, the rotating seat is provided with a restraining area matched with the restraining members, when the restraining area on the rotating seat is rotated to the corresponding position of the restraining members, the two are matched to restrain the rotation of the rotating seat.

[0013] In a possible implementation manner, the center finder is provided with two micrometers, and the two micrometers are arranged in the transverse and longitudinal directions respectively.

[0014] The one or more technical solutions in the embodiments of the present application have at least one of the following technical effects: the teaching device for measuring and adjusting the vertical coaxiality of a water pump unit provided by the embodiments of the present application is provided with a medium assembly on the concentric circle device, which avoids the abrasion and damage of the inner wall of the concentric circle device caused by the repeated measurement and placement of the measuring tool, so that the teaching device can maintain stable measurement accuracy for a long time, thereby fully meeting the needs of teaching, and the medium assembly adopts a single measurement medium combined with the rotating and lifting functions of the rotating seat and the lifting assembly, so that the measurement of the eight measurement points of up, down, left, right, front and back can be conveniently and quickly completed, in addition, the measurement medium is arranged in an elastic sliding manner, moves to the measurement point in a straight line during the abutting process of the measuring tool, and automatically and quickly moves away from the measurement point after the abutting state with the measuring tool is released, thereby further improving the convenience of teaching and experimental operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a teaching device for measuring and adjusting the vertical coaxiality of a water pump unit provided by the embodiments of the present application.

[0016] Figure 2 FIG. 2 is a schematic diagram of the partial cross-sectional structure of a teaching device for measuring and adjusting the vertical coaxiality of a water pump unit provided by the embodiments of the present application.

[0017] Figure 3 FIG. 3 is a schematic diagram of the partial structure of a teaching device for measuring and adjusting the vertical coaxiality of a water pump unit provided by the embodiments of the present application.

[0018] Figure 4 FIG. 4 is a schematic diagram of the structure of the lifting frame, rotating column and limiting piece of a teaching device for measuring and adjusting the vertical coaxiality of a water pump unit provided by the embodiments of the present application.

[0019] Figure 5 FIG. 5 is a schematic diagram of the structure of the restraining piece, restraining area and base frame of a teaching device for measuring and adjusting the vertical coaxiality of a water pump unit provided by the embodiments of the present application.

[0020] Figure 6 FIG. 6 is a schematic diagram of the cooperation process change of the limiting column and the limiting hole of a teaching device for measuring and adjusting the vertical coaxiality of a water pump unit provided by the embodiments of the present application.

[0021] In the figure: 1, base frame; 2, concentric circle device; 3, center finder; 4, annular support; 5, medium assembly; 51, rotating seat; 52, lifting assembly; 521, mounting seat; 522, lifting frame; 523, limiting piece; 524, rotating column; 525, through port; 526, limiting seat; 53, receiving seat; 54, measuring medium; 541, limiting hole; 542, base; 543, contact end; 55, two-way limiting area; 56, limiting frame; 561, base frame; 562, limiting column; 57, elastic piece; 58, restraining piece; 59, restraining area; 6, platform; 7, adjusting bolt; 8, oil drum; 9, piano wire; 10, weight. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways than those described below, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0023] Please refer to Figure 1 and Figure 2 A teaching device for measuring and adjusting the vertical coaxiality of a water pump unit, comprising a base frame 1, a concentric circle device 2, a center finder 3, an adjustable height annular support 4 and a medium assembly 5, as shown in Figure 2As shown, the center finder 3 is installed on the platform 6 on the top of the base frame 1, the concentric device 2 is located below the center finder 3 and above the annular support 4 and is installed on the annular support 4 through the adjusting bolt 7, the position state of the concentric device 2 is adjusted through the adjusting bolt 7, the oil drum 8 is placed at the center position of the annular support 4, the oil drum 8 contains oil, the piano wire 9 on the wire wheel of the center finder 3 is lowered into the concentric device 2 and a heavy hammer 10 is hung at the lower end of the piano wire 9, the heavy hammer 10 is immersed in the oil drum 8 to prevent the swing of the piano wire 9 from affecting the accuracy of the measurement, the concentric device 2 is used to simulate the vertical unit motor bearing nest and the water guide bearing nest, the inside diameter micrometer is used as a measuring tool during the measurement process, and the concentric device 2, the medium assembly 5, the sound, the dry battery, the center finder 3 and the wire are connected into an electric circuit, the distance between the measuring point of the concentric device 2 and the piano wire 9 is measured according to the electric circuit method and data is obtained, the deviation value and direction of the piano wire 9 and the concentric device 2 are calculated according to the existing algorithm, and the height and level of the concentric device 2 are adjusted according to the results, or the position of the center finder 3 is adjusted through fine adjustment, and through repeated measurement and fine adjustment, the axis of the concentric device 2 coincides with the piano wire 9, so that the students master the measurement, calculation and adjustment method of the verticality and coaxiality of the unit, and the specific measurement process is as follows: the distance between the upper and lower bearing nests and the piano wire 9 is measured from the front, back, left and right four directions, during the measurement process, the tail end of the inside diameter micrometer abuts against and contacts the medium assembly 5, the medium assembly 5 abuts against and contacts the measuring point on the inner diameter of the bearing nest, then the length of the measuring rod of the inside diameter micrometer is adjusted, so that the scale head contacts the piano wire 9 in a smaller range, at this time, if the circuit is connected, the sound will occur, and then the reading of the inside diameter micrometer plus the straight line distance between the inside diameter micrometer and the measuring point is the distance from the measured point to the piano wire 9, wherein the structural length of the medium assembly 5 between the inside diameter micrometer and the measuring point is a fixed integer value.

[0024] Referring to Figure 1 and Figure 3 , the medium assembly 5 is arranged on the concentric device 2, so that the measuring tool does not directly contact the measuring point on the inner diameter of the concentric device 2, effectively avoiding the wear and damage of the inner wall of the concentric device 2 during the repeated measurement and placement of the measuring tool, so that the teaching device can maintain stable measurement accuracy for a long time, and fully meet the needs of teaching, such as Figure 3As shown, the medium assembly 5 comprises a rotating seat 51, a lifting assembly 52 and a receiving seat 53, the rotating seat 51 is rotationally installed on the upper end of the concentric device 2, the receiving seat 53 is provided with a measuring medium 54, the measuring medium 54 only moves in the radial direction of the concentric device 2, and the measuring tool is in abutting contact with the concentric device 2 through the measuring medium 54 during the measuring process, thereby effectively avoiding the abrasion and damage caused by the direct abutting connection between the measuring tool and the concentric device 2, and ensuring the accuracy of the measurement and the convenience of the measuring process, wherein the rotation of the rotating seat 51 enables the measuring medium 54 to move in the circumferential direction, so as to facilitate the movement of the measuring medium 54 to the four measuring points in front, back, left and right and the corresponding measurement, and the lifting of the lifting assembly 52 enables the measuring medium 54 to move in the axial direction, so as to facilitate the measuring medium 54 to enter the measuring area of the upper and lower bearing pockets and combine the rotation of the rotating seat 51 to measure the corresponding front, back, left and right measuring points, wherein the measuring medium 54 is elastically and slidably connected with the receiving seat 53, and during the measuring process, only the tail end of the measuring tool is abutted on the measuring medium 54 and forced to move the measuring medium 54 to the measuring point inside the concentric device 2 until the measuring medium 54 is abutted on the measuring point, and then the subsequent measuring work can be carried out, and after the single measurement is completed, the measuring tool is removed, and the measuring medium 54 is reset away from the concentric device 2 under the action of the elastic force, thereby fully improving the convenience of the measuring process on the basis of effectively avoiding the damage to the measuring points of the concentric device 2.

[0025] Referring to Figure 3 , Figure 4 and Figure 5 , the receiving seat 53 is provided with a bidirectional limiting area 55 and a limiting frame 56, the limiting frame 56 is connected with the bidirectional limiting area 55 through an elastic member 57, the limiting frame 56 is slidably installed on the receiving seat 53 and located in the bidirectional limiting area 55, as shown in Figure 4 , the bidirectional limiting area 55 is a symmetrical limiting groove, in the unmeasured state, the limiting frame 56 is limited and fixed in the radial direction of the measuring medium 54 through the limiting of the elastic member 57 and the cooperation of the bidirectional limiting area 55, and the freedom degree of the measuring medium 54 is constrained in the non-sliding direction, during the measuring process, the handheld measuring tool is placed on the receiving seat 53 and abuts the measuring medium 54 to the measuring point inside the concentric device 2, at the same time, the measuring medium 54 is limited and fixed between the measuring tool and the limiting frame 56 and compresses the elastic member 57, after the measurement is completed, the measuring tool releases the abutting state of the measuring medium 54, and the measuring medium 54 is quickly separated from the measuring point inside the concentric device 2 under the action of the elastic member 57, and during the installation process, only the limiting frame 56 needs to be pressed to the inside of the concentric device 2, so as to release the limiting of the limiting frame 56 to the measuring medium 54, thereby taking out the measuring medium 54 and replacing it, which is very convenient and fast.

[0026] Referring to Figure 4 and Figure 6The limiting frame 56 comprises a base frame 561 and limiting columns 562 symmetrically installed on the base frame 561, and the measuring medium 54 comprises a base 542 provided with limiting holes 541 and a hemispherical contact end 543 detachably installed on the base 542, the contact end 543 is in point contact with the measuring point, the contact end 543 is installed on the side of the base 542 close to the measuring point, and the straight line distance between the end point of the contact end 543 close to the measuring point and the contact surface of the base 542 away from the measuring point is a fixed integer value, the limiting holes 541 correspond to the limiting columns 562 one by one, during the measuring process, one measuring end of the measuring tool is abutted on the contact surface of the base 542 away from the measuring point and tightly abuts the base 542, so that the contact end 543 is abutted at the measuring point on the inner side of the concentric device 2, the limiting holes 541 and the limiting columns 562 cooperate on the vertical plane to limit the measuring medium 54, and during the measuring process, the reading of the inside diameter micrometer plus the fixed integer value is the distance data of the measured point to the piano wire 9.

[0027] Referring to Figure 1 , Figure 3 , Figure 4 and Figure 5 , the lifting assembly 52 comprises a mounting seat 521 and a lifting frame 522, the mounting seat 521 is fixedly installed on the rotating seat 51, the bearing seat 53 is fixedly installed on the lifting frame 522, the lifting frame 522 is vertically and slidingly installed on the mounting seat 521, a rotating column 524 provided with a plurality of limiting members 523 is rotationally arranged on the mounting seat 521, the limiting members 523 are distributed in the axial direction of the rotating column 524, a limiting seat 526 provided with a through port 525 is fixedly installed on the lifting frame 522, the alignment or misalignment of the limiting members 523 and the through port 525 is controlled by rotating the rotating column 524, the sliding and limiting fixation of the lifting frame 522 are controlled, and the lifting adjustment of the measuring medium 54 is quickly completed, in combination with Figure 4 and Figure 5 , each two limiting members 523 form a limiting unit, there are three limiting units, and the two limiting members 523 in the limiting unit are distributed in the circumferential direction of the rotating column 524, the limiting units are distributed in the axial direction of the rotating column 524, the two limiting units located above are upper limiting points, and the lower limiting unit cooperates with the mounting seat 521 to form a lower limiting point, because there are mainly two bearing hole measuring requirements in the measuring process, only the upper and lower limiting points are arranged, the position of the measuring medium 54 is quickly and clearly switched, and the position adjustment of the measuring medium 54 in the up-down direction is quickly completed.

[0028] Referring to Figure 3 and Figure 5The four restraining pieces 58 are arranged on the concentric device 2 in a circumferential direction, and the rotating seat 51 is provided with restraining areas 59 matched with the restraining pieces 58, when the restraining areas 59 on the rotating seat 51 rotate to the position corresponding to the restraining pieces 58, the rotating seat 51 is restrained from rotating by the cooperation of the restraining areas 59 and the restraining pieces 58, so as to make the rotating seat 51 stay at the corresponding measuring point, wherein the restraining pieces 58 are elastic protrusions, and the restraining areas 59 are grooves, when the rotating seat 51 rotates gently, the restraining pieces 58 are embedded into the restraining areas 59 to restrain the rotating seat 51 from rotating, so as to make the rotating seat 51 stay at the current area.

[0029] It should be noted that the centering device 3 is provided with two micrometers (not shown in the figure), and the two micrometers are arranged in the horizontal direction and the vertical direction respectively, so as to accurately adjust the displacement in the horizontal direction and the vertical direction, and improve the adjustment accuracy and efficiency.

[0030] In the embodiments of the present application, unless specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact or indirect contact through an intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature can be directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is lower than that of the second feature.

[0031] In the description of the present application, it should be noted that, unless specifically defined and limited, the terms "arranged", "connected", "mounted", and "connected" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, or sliding connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A teaching device for measuring and adjusting the vertical coaxiality of a water pump unit, comprising a base frame, a concentric circle device, and a centering device, characterized in that: The concentric circle device is provided with a medium assembly, the medium assembly comprising: The rotating base is coaxially arranged with the concentric circle device; The receiving seat is fixedly installed on the lifting assembly and is used to limit the measuring tool. The measuring medium is elastically and slidably mounted on the receiving seat along the radial limit of the concentric circle device; the measuring medium and the concentric circle device are in point contact. The lifting assembly, mounted on the rotating base, allows the measuring medium to move axially upwards; The receiving seat is provided with a bidirectional limiting area and a limiting frame. The limiting frame includes a base frame and a limiting post. The measuring medium includes a base with a limiting hole. A hemispherical contact end is detachably installed on the side of the base near the measuring point. The limiting hole and the limiting post cooperate to constrain the degree of freedom of the measuring medium in the non-sliding direction of the measuring medium. During the measurement process, the measuring tool presses against the measuring medium towards the concentric circle device, so that the measuring medium is located between the measuring tool and the concentric circle device. When the measuring tool is released, the measuring medium automatically resets and moves away from the concentric circle device.

2. The teaching device for measuring and adjusting the vertical coaxiality of a water pump unit according to claim 1, characterized in that: The measuring medium is removable and replaceable.

3. A teaching device for measuring and adjusting the vertical coaxiality of a water pump unit according to any one of claims 1-2, characterized in that: An elastic element is provided between the limiting frame and the bidirectional limiting area. The measuring medium is inserted into the bidirectional limiting area. The limiting frame limits the measuring medium under the action of the elastic element, constrains the degree of freedom of the measuring medium in the non-measuring medium sliding direction, and provides elastic restoring force in the measuring medium sliding direction.

4. The teaching device for measuring and adjusting the vertical coaxiality of a water pump unit according to claim 1, characterized in that: The lifting assembly includes a mounting base and a lifting frame. The receiving base is fixedly installed on the lifting frame. The mounting base is provided with a rotating column with several limiting components. The lifting frame is fixedly installed with a limiting seat with a passage opening. By rotating the rotating column, the alignment or misalignment of the limiting components with the passage opening is controlled, thereby controlling the sliding and limiting fixation of the lifting frame.

5. The teaching device for measuring and adjusting the vertical coaxiality of a water pump unit according to claim 1, characterized in that: The concentric circle device is provided with a number of suppressing elements distributed circumferentially. The rotating seat is provided with a suppressing area that cooperates with the suppressing elements. When the suppressing area on the rotating seat rotates with the rotating seat to the position corresponding to the suppressing element, the two cooperate to suppress the rotation of the rotating seat.

6. The teaching device for measuring and adjusting the vertical coaxiality of a water pump unit according to claim 1, characterized in that: The centering device is equipped with two micrometers, which are arranged horizontally and vertically respectively.

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