A type of inspection tool

Abstract

This utility model discloses a gauge, including a guide shaft with a matrix of positioning holes evenly distributed along its length; a bearing assembly including a base rotatably connected to the guide shaft, the base being mounted on the contact surface of the pump body inlet ring; and test pieces including a first test piece and a second test piece connected to and rotating synchronously with the guide shaft. The first test piece includes a dial indicator slider that mates with the positioning holes, and the second test piece includes a positioning rod that mates with the positioning holes. Both the dial indicator slider and the positioning rod are equipped with dial indicators. The guide shaft has positioning holes for mounting the test pieces, and the guide shaft is rotatably connected to the pump body inlet ring via the bearing assembly. Rotating the guide shaft synchronously drives the test pieces to rotate, enabling the measurement of form and position tolerances of multiple surfaces on the pump body. The use of a magnetic dial indicator holder with positioning holes on the guide shaft ensures the repeatability of the dial indicator positioning, effectively improving the accuracy of side-view measurements.

Description

Technical Field

[0001] This utility model belongs to the field of pump body testing technology, and specifically relates to a testing tool. Background Technology

[0002] During pump assembly, the form and position tolerances of the contact surfaces between the bearing housing, sealing body, and other components and the pump body directly affect the assembly accuracy and sealing performance.

[0003] Traditional testing methods require the use of multiple measuring tools (such as feeler gauges, coordinate measuring machines, or single-point dial indicators) in multiple steps, which has the following drawbacks:

[0004] 1. Cumbersome operation: requires multiple clamping and tool changes, resulting in low efficiency;

[0005] 2. Data fragmentation: It is difficult to synchronize and compare measurement results from multiple tools;

[0006] 3. Insufficient adaptability: The fixture needs to be redesigned when the position or size of the contact surface changes.

[0007] Therefore, there is an urgent need for an integrated detection device that can quickly adapt to different contact surfaces and support simultaneous measurement of multiple parameters. Utility Model Content

[0008] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide an inspection tool.

[0009] The technical solution adopted in this utility model includes:

[0010] The guide shaft has matrix-type positioning holes evenly distributed along its length.

[0011] The bearing assembly includes a base rotatably connected to the guide rod shaft, the base being mounted on the pump body inlet ring contact surface;

[0012] The test piece includes a first test piece and a second test piece connected to and rotating synchronously with the guide rod shaft. The first test piece includes a dial indicator slider that mates with the positioning hole, and the second test piece includes a positioning rod that mates with the positioning hole. Both the dial indicator slider and the positioning rod are equipped with dial indicators.

[0013] As a preferred embodiment of this utility model,

[0014] The positioning hole includes a first positioning hole and a second positioning hole that penetrate the guide rod shaft.

[0015] The bottom of the dial indicator slider is in contact with the circumferential surface of the guide rod shaft, and the dial indicator slider is provided with a first locking bolt that mates with the first positioning hole;

[0016] The positioning rod is inserted into one of the second positioning holes, and a second locking bolt is connected to the positioning rod. The second locking bolt is threaded into the first positioning hole and is used to lock the positioning rod and the guide rod shaft.

[0017] As a preferred embodiment of this invention, the axes of the first positioning hole and the second positioning hole are perpendicular.

[0018] As a preferred embodiment of this invention, the dial indicator and the dial indicator base slider or positioning rod are connected by a mounting assembly, which is used to adjust the height and spacing between the dial indicator and the dial indicator base slider or positioning rod.

[0019] As a preferred embodiment of this invention, the dial base slider is a magnetic dial base movable block.

[0020] As a preferred embodiment of this utility model, two bases are provided, which are respectively installed on the two contact surfaces of the pump body inlet ring. The two bases are connected by a screw, and the screw is provided with a nut that restricts the position of the base in the length direction of the screw.

[0021] As a preferred embodiment of this invention, the base is provided with multi-stage positioning steps to accommodate circular surfaces with different pump body inlet ring diameters.

[0022] As a preferred embodiment of this invention, the bearing assembly further includes:

[0023] The bearing sleeve is fixedly installed on the guide rod shaft;

[0024] A bearing is fitted between the bearing sleeve and the base;

[0025] A bearing cap is fixedly mounted on top of the base to restrict the installation of the bearing.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model, as a type of inspection tool, uses a guide rod shaft with positioning holes for mounting test pieces. The guide rod shaft is rotatably connected to the pump body inlet ring via a bearing assembly. Rotating the guide rod shaft synchronously drives the test pieces to rotate, enabling the measurement of form and position tolerances of multiple surfaces on the pump body. The magnetic dial indicator base, with its movable block engaging with the positioning holes on the guide rod shaft, ensures the dial indicator's repeatability and effectively improves side-view accuracy. The dial indicator base slider uses a magnetic movable block with a built-in electromagnet or permanent magnet, allowing for one-click attraction / release to the positioning holes on the guide rod shaft, supporting rapid positioning and multi-angle adjustment of the dial indicator. The bearings, bearing caps, base, and bushings feature adjustable bearing preload to eliminate axial movement during guide rod shaft rotation. The stepped dimensions of the base match the contact surface of the pump body inlet ring, ensuring that the axis of the guide rod shaft coincides with the theoretical axis of the surface to be measured. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0030] Figure 2 This is a schematic diagram of the structure of this utility model;

[0031] Figure 3 This is a partial structural diagram of the present invention.

[0032] In the diagram: 1 guide rod shaft, 11 positioning hole, 111 first positioning hole, 112 second positioning hole;

[0033] 2. Bearing assembly, 21. Base, 211. Positioning step, 22. Bearing sleeve, 23. Bearing, 24. Bearing cover, 25. Screw;

[0034] 3 Test piece, 31 First test piece, 311 Gauge base slider, 312 Mounting assembly, 313 Dial gauge, 314 First locking bolt, 32 Second test piece, 321 Positioning rod, 322 Second locking bolt. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] The following is combined Figure 1-3 This invention describes a specific embodiment of an inspection tool, comprising:

[0038] The guide shaft 1 has matrix-type positioning holes 11 evenly opened along its length direction. Multiple positioning holes 11 are distributed along the length direction of the guide shaft 1. Multiple positioning holes 11 are used for the installation of the test piece 3 at different positions along the length direction of the guide shaft 1.

[0039] The bearing assembly 2 includes a base 21 rotatably connected to the guide rod shaft 1. The base 21 is mounted on the contact surface of the pump body inlet ring and is mounted on the circular surface of the pump body inlet ring.

[0040] Test piece 3 includes a first test piece 31 and a second test piece 32 connected to and rotating synchronously with the guide rod shaft 1. The first test piece 31 includes a dial indicator slider 311 that mates with the positioning hole 11. The second test piece 32 includes a positioning rod 321 that mates with the positioning hole 11. A dial indicator 313 is connected to both the dial indicator slider 311 and the positioning rod 321. By rotating the guide rod shaft 1 on the base 21, and with the test piece 3, such as the dial indicator 313, connected to the guide rod shaft 1, the dial of the dial indicator 313 is connected to the guide rod shaft 1. The tip of its probe is in perpendicular contact with the surface to be tested on the pump body. The rotation of the guide rod shaft 1 synchronously drives the dial indicator 313 to rotate. The dial indicator 313 scans the entire circumference of the contact surface of the surface to be tested and records the flatness, radial runout, and axial offset data synchronously.

[0041] Please refer to Figure 1 As shown,

[0042] The positioning hole 11 includes a first positioning hole 111 and a second positioning hole 112 that penetrate the guide rod shaft 1. The first positioning hole 111 and the second positioning hole 112 can be used for the first test piece 31 and the second test piece 32 to be oriented in different directions on the circumferential surface of the guide rod shaft 1.

[0043] The bottom of the dial indicator slider 311 is in contact with the circumferential surface of the guide rod shaft 1. The dial indicator slider 311 is provided with a first locking bolt 314 that cooperates with the first positioning hole 111. By using the threaded engagement between the first locking bolt 314 and the dial indicator slider 311 and the first positioning hole 111, the dial indicator slider 311 can be fixedly installed on the guide rod shaft 1, so as to provide support connection for the dial indicator 313.

[0044] The positioning rod 321 is inserted into one of the second positioning holes 112. A second locking bolt 322 is connected to the positioning rod 321. The second locking bolt 322 is threaded into the first positioning hole 111 and is used to lock the positioning rod 321 and the guide rod shaft 1. In this embodiment, the positioning rod 321 passes through one of the second positioning holes 112. The second locking bolt 322 is threaded into the first positioning hole 111 on one side of the second positioning hole 112, and one end of the second locking bolt 322 abuts against the positioning rod 321, thereby realizing the positioning of the positioning rod 321. Locking between the dial indicator slider 311 and the guide rod shaft 1; it should be noted that the first positioning hole 111 and the second positioning hole 112 are the same size. The installation of the dial indicator slider 311 is not limited to being fixedly installed through the first positioning hole 111. At the same time, the installation orientation of the dial indicator slider 311 on the circumference of the guide rod shaft 1 can also be changed. The second positioning hole 112 can be used to assist in the fixed installation of the dial indicator slider 311 on the guide rod shaft 1. Similarly, the positioning rod 321 can also pass through the first positioning hole 111, and the second locking bolt 322 is used to lock the positioning rod 321 and the guide rod shaft 1 by using the internal thread of the second positioning hole 112.

[0045] Please refer to Figures 1-3 As shown, the axes of the first positioning hole 111 and the second positioning hole 112 are perpendicular, so that the dial indicator 313 connected to the slider 311 or the positioning rod 321 of the base is perpendicular to each other. In addition, the locking force of the second locking bolt 322 on the positioning rod 321 can be increased.

[0046] Please refer to Figure 3 As shown, the dial indicator 313 and the dial indicator base slider 311 or positioning rod 321 are connected by a mounting assembly 312. The mounting assembly 312 is used to adjust the height and spacing between the dial indicator 313 and the dial indicator base slider 311 or positioning rod 321. The mounting assembly 312 is a conventional technology and consists of multiple connecting rods. It is used to connect the dial indicator 313 with the dial indicator base slider 311 or positioning rod 321. At the same time, it can adjust the height and spacing between the dial indicator 313 and the guide rod shaft 1 after connection to ensure that the tip of the first locking bolt 314 is in vertical contact with the surface to be measured.

[0047] Please refer to Figure 3 As shown, the dial indicator slider 311 is a magnetic dial indicator block, which can conveniently control the position adjustment of the first test piece 31 on the guide rod shaft 1. The magnetic dial indicator block is a conventional technology. It can be attracted / released onto the guide rod shaft 1 with one click by using an electromagnet or permanent magnet built into it. At the same time, it can be locked with the assistance of the first locking bolt 314, which improves the stability of the dial indicator slider 311 connected to the guide rod shaft 1 and supports the rapid positioning of the dial indicator 313.

[0048] Please refer to Figure 2 As shown, there are two bases 21, which are respectively installed on the two contact surfaces of the pump body inlet ring. The two bases 21 are connected by a screw 25. The screw 25 is provided with a nut that limits the position of the base 21 in the length direction of the screw 25. The relative position of the two bases 21 is limited according to the distance between the two contact surfaces of the pump body inlet ring and by the nut.

[0049] Please refer to Figure 3 As shown, the base 21 has multiple positioning steps 211 to adapt to different pump body inlet ring diameters. Each positioning step 211 has a different diameter, which can adapt to pump body inlet ring diameters of different sizes.

[0050] Please refer to Figures 1-3 As shown, the bearing assembly 2 further includes:

[0051] Bearing sleeve 22 is fixedly installed on the guide rod shaft 1;

[0052] Bearing 23 is sleeved between bearing sleeve 22 and base 21;

[0053] The bearing 23 cover is fixedly installed on the top of the base 21 to restrict the installation of the bearing 23; the bearing 23 is connected to the guide rod shaft 1 through the bearing sleeve 22, the inner ring of the bearing 23 is sleeved on the guide rod shaft 1 through the bearing sleeve 22, and its outer ring is sleeved in the base 21 and the bearing 23 cover, so that the guide rod shaft 1 can rotate on the base 21.

[0054] Working principle of this utility model:

[0055] According to the size of the pump inlet ring, select the appropriate position of the base 21 (i.e., the positioning step 211 of different sizes) and install the base 21 to the pump body inlet ring.

[0056] According to the testing requirements, the dial indicator 313 is installed into the corresponding positioning hole 11 of the guide rod shaft 1 through the magnetic base movable block and the adjusting rod, so that the probe of the dial indicator 313 is in perpendicular contact with the surface to be measured;

[0057] The guide rod shaft 1 is rotated at a constant speed, and the dial indicator 313 scans the entire circumference of the contact surface, simultaneously recording the flatness, radial runout and axial offset data.

[0058] By adjusting the positions of the dial indicator 313 and the positioning rod 321 on the guide shaft 1, the position of the dial indicator 313 can be adjusted, enabling the comprehensive evaluation of the form and position tolerances of multiple contact surfaces and multiple sections to be completed in a single clamping of the testing device.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0060] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A gauge comprising: include: The guide shaft (1) has matrix-type positioning holes (11) evenly distributed along its length direction; The bearing assembly (2) includes a base (21) rotatably connected to the guide rod shaft (1), the base (21) being mounted on the pump body inlet ring contact surface; The test piece (3) includes a first test piece (31) and a second test piece (32) connected to the guide rod shaft (1) and rotating synchronously therewith. The first test piece (31) includes a dial indicator slider (311) that mates with the positioning hole (11). The second test piece (32) includes a positioning rod (321) that mates with the positioning hole (11). A dial indicator (313) is connected to both the dial indicator slider (311) and the positioning rod (321).

2. The inspection tool according to claim 1, characterized in that: The positioning hole (11) includes a first positioning hole (111) and a second positioning hole (112) that pass through the guide rod shaft (1); The bottom of the dial base slider (311) is in contact with the circumferential surface of the guide rod shaft (1), and the dial base slider (311) is provided with a first locking bolt (314) that cooperates with the first positioning hole (111); The positioning rod (321) is inserted into one of the second positioning holes (112). A second locking bolt (322) is connected to the positioning rod (321). The second locking bolt (322) is threaded into the first positioning hole (111) and is used to lock the positioning rod (321) and the guide rod shaft (1).

3. The inspection tool according to claim 2, characterized in that: The axes of the first positioning hole (111) and the second positioning hole (112) are perpendicular.

4. The inspection tool according to claim 2, characterized in that: The dial indicator (313) and the dial indicator base slider (311) or positioning rod (321) are connected by a mounting assembly (312), which is used to adjust the height and spacing between the dial indicator (313) and the dial indicator base slider (311) or positioning rod (321).

5. The inspection tool according to claim 4, characterized in that: The dial base slider (311) is a magnetic dial base movable block.

6. The inspection fixture according to claim 1, characterized in that: Two bases (21) are provided, which are respectively installed on the two contact surfaces of the pump body inlet ring. The two bases (21) are connected by a screw (25). The screw (25) is provided with a nut that restricts the position of the base (21) in the length direction of the screw (25).

7. The inspection tool according to claim 6, characterized in that: The base (21) has multiple positioning steps (211) to accommodate different pump body inlet ring diameters.

8. The inspection tool according to claim 7, characterized in that, The bearing assembly (2) also includes: The bearing sleeve (22) is fixedly installed on the guide rod shaft (1); The bearing (23) is fitted between the bearing sleeve (22) and the base (21); A bearing (23) cover is fixedly mounted on top of the base (21) to restrict the installation of the bearing (23).

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