Machine pump centering instrument

Abstract

The utility model relates to a machine pump centering instrument, which comprises a measuring jig and a reference jig, the measuring jig and the reference jig are respectively provided with a mounting seat and a chain, the two ends of the chain are respectively connected with the two sides of the mounting seat, the measuring jig comprises a mounting frame, the mounting frame comprises a first mounting rod and a second mounting rod which are vertically connected, and the first mounting rod and the second mounting rod are connected with each other. Each of the first mounting rod and the second mounting rod is provided with a mounting hole and a first locking piece, the first locking piece is mounted on one side of the mounting hole, the reference jig comprises a supporting rod, a sliding groove is formed in the supporting rod, a sliding block is mounted in the sliding groove in a sliding manner, and a reference rod is mounted on the sliding block in a sliding manner. The device has the advantages of simplicity and convenience in operation, high measurement accuracy, good practicability and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the measurement technical field, specifically, relate to a machine pump centering instrument. BACKGROUND

[0002] In the petroleum, chemical industry, power plant, water treatment etc. industry, often will meet the situation needing to the two shafts carry out the centering, the quality of centering is good or bad directly influences the normal operation of mechanical structure. The main centering method mainly adopts laser centering and dial gauge centering at present, wherein, the precision of laser centering is high, but needs to use the precision laser instrument, the cost is high, and needs to carry out professional training to the operating personnel after can use, the operation difficulty is high;Dial gauge centering is easy to obtain because of dial gauge, and the operation difficulty is relatively low, therefore application is more widespread.

[0003] When using dial gauge to carry out the centering measurement, the contact of dial gauge needs to contact with the end face and the periphery of shaft, thereby carries out the measurement, but the surface of the measured shaft can exist some defects such as rust, pit, protrusion due to service life, self material or other reasons, therefore, these surface defects can influence the measurement result when measuring, bring the error, seriously influence the precision of centering. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a machine pump centering instrument which is simple and easy to operate, high in measurement accuracy and good in practicability.

[0005] A machine pump centering instrument, comprising a measuring jig and a reference jig, the measuring jig and the reference jig are both provided with a mounting seat and a chain, two ends of the chain are connected with two sides of the mounting seat respectively, the measuring jig comprises a mounting frame, the mounting frame comprises a first mounting rod and a second mounting rod connected perpendicularly, the first mounting rod and the second mounting rod are both provided with mounting holes and first locking members, the first locking members are installed on one side of the mounting holes, the reference jig comprises a supporting rod, the supporting rod is provided with a sliding groove, a sliding block is slidingly installed in the sliding groove, and a reference rod is slidingly installed on the sliding block.

[0006] In the technical scheme, the measuring fixture and the reference fixture are respectively installed on two shafts to be measured, the chain at the bottom of the mounting seat is wound around the shaft, the mounting seat is locked through the chain, the measuring fixture and the reference fixture are fixed, the mounting frame is arranged on the mounting seat of the measuring fixture, the mounting hole on the mounting frame is used for mounting the dial gauge, the first locking member is used for pressing the mounted dial gauge in the mounting hole, wherein the dial gauge on the first mounting rod is arranged along the axial direction of the shaft to be measured, the dial gauge on the second mounting rod is arranged along the radial direction of the shaft to be measured, the supporting rod is installed on the mounting seat of the reference fixture, the reference rod is parallel to the axial direction of the shaft to be measured, the contact of the dial gauge on the first mounting rod points to the end of the reference rod, and the contact of the dial gauge on the second mounting rod points to the outer periphery of the reference rod, so that the measurement data of the outer periphery and the end surface of the shaft to be measured can be obtained through the measurement of the outer periphery and the end surface of the reference rod, wherein the sliding block can move in the sliding groove along the radial direction of the shaft to be measured, so that the position of the reference rod is adjusted, when the shafts with different diameters are measured, the reference rod and the dial gauge can be calibrated by moving the sliding block, and the subsequent measurement work is facilitated.

[0007] It should be noted that the surface of the shaft to be measured may have certain quality problems such as rust, pits and protrusions due to various reasons, therefore, the measurement of the shaft to be measured is converted into the measurement of the reference rod by arranging the reference rod parallel to the axial direction of the shaft to be measured, so that the measurement data is more accurate and reliable.

[0008] Further, the bottom of the mounting seat is provided with two clamping plates, the bottom of the clamping plate is provided with a clamping groove, and the clamping groove is triangular in shape.

[0009] In the technical scheme, the triangular clamping groove can enhance the stability of the clamping plate placed on the shaft, and facilitate the placement on shafts with different diameters.

[0010] Further, at least two positioning holes are arranged on the two clamping plates, and a positioning pin is arranged in the positioning hole.

[0011] In the technical scheme, the positioning hole and the positioning pin are used for positioning the two clamping plates, so that the two clamping plates are aligned.

[0012] Further, a fastener is threadedly installed on the mounting seat, and one end of the chain is detachably connected with the fastener.

[0013] In the technical scheme, one end of the chain is fixedly connected with the mounting seat, and the other end is threadedly connected with the fastener on the mounting seat after the chain is wound around the shaft to be measured for one turn, the chain is locked on the shaft to be measured by rotating the fastener, so as to be fixed, and the chain and the fastener are detachably connected, so that the shaft coupling at the end of the shaft to be measured does not need to be disassembled during installation, and the installation can be directly performed, which is more convenient to use.

[0014] Further, the reference fixture further comprises a second locking member for locking the sliding block, and the second locking member is threadedly connected with the sliding block.

[0015] In the technical scheme, the second locking member is used for locking the sliding block, and the second locking member is threadedly connected with the sliding block, and when locking, the sliding block is fixed in the sliding groove by tightening the second locking member.

[0016] Further, the sliding block comprises a first connecting block and a second connecting block, the first connecting block and the second connecting block are respectively located on two sides of the supporting rod, and the first connecting block and the second connecting block are both provided with a threaded hole matched with the second locking member.

[0017] In the technical scheme, the second locking member connects the first connecting block and the second connecting block through the threaded holes on the first connecting block and the second connecting block, wherein the first connecting block and the second connecting block are respectively located on two sides of the supporting rod and are connected together through the second locking member, and when locking the sliding block, the two connecting blocks can be made close to and clamp the supporting rod by rotating the second locking member, so as to complete the locking.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] The measuring fixture and the reference fixture are arranged, two dial gauges along the axial direction and the radial direction of the to-be-measured shaft can be arranged on the measuring fixture, the reference fixture comprises a reference rod, the two dial gauges can measure the reference rod, since the reference fixture is installed on the to-be-measured shaft, the reference rod is parallel to the axial direction of the shaft on which the reference rod is installed, the two dial gauges can obtain the position data of the to-be-measured shaft by measuring the reference rod, errors caused by the surface quality problem of the to-be-measured shaft can be effectively avoided, the measurement result is more accurate and reliable, in addition, the sliding block is arranged, the reference rod is slidably installed on the sliding block, so that the position of the reference rod can be flexibly adjusted, the dial gauges can be conveniently calibrated, the operation is simple, the centering work can be quickly completed, the centering of shafts with various diameters can be applied, and the utility model has good practicability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 It is a structural schematic view (front view) of the measuring fixture of an embodiment.

[0022] Figure 2 It is a structural schematic view (front view) of the measuring fixture of an embodiment. Figure 1Left view (chain has been disassembled).

[0023] Figure 3 Structure diagram of reference fixture (front view) of an embodiment.

[0024] Figure 4 For Figure 3 Left view (chain has been disassembled).

[0025] Figure 5 State diagram of the machine pump alignment instrument of the present application in use.

[0026] Explanation of reference numerals in the drawings:

[0027] 1-measuring fixture; 11-first mounting rod; 12-second mounting rod; 13-mounting hole; 14-first locking member; 2-reference fixture; 21-supporting rod; 22-sliding groove; 23-sliding block; 231-first connecting block; 232-second connecting block; 233-second locking member; 24-reference rod; 3-mounting base; 31-clamping plate; 311-clamping groove; 312-positioning hole; 32-fastening member; 4-chain; 5-dial indicator. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts, fall within the scope of protection of the present application.

[0030] It should be noted that: similar numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0031] Please refer to Figures 1 to 5The embodiment provides a machine pump centering instrument, which comprises a measuring tool 1 and a reference tool 2, the measuring tool 1 and the reference tool 2 are both provided with mounting seats 3 and chains 4, the two ends of the chain 4 are connected with the two sides of the mounting seat 3 respectively, the measuring tool 1 comprises a mounting frame, the mounting frame comprises a first mounting rod 11 and a second mounting rod 12 which are connected vertically, the first mounting rod 11 and the second mounting rod 12 are both provided with mounting holes 13 and first locking pieces 14, the first locking piece 14 is installed on the side of the mounting hole 13, the reference tool 2 comprises a supporting rod 21, the supporting rod 21 is provided with a sliding groove 22, a sliding block 23 is slidably installed in the sliding groove 22, and a reference rod 24 is slidably installed on the sliding block 23.

[0032] Specifically, when centering, the measuring tool 1 and the reference tool 2 are installed on two shafts respectively, so that the chains 4 at the bottom of the mounting seats 3 of the two tools are arranged around the shafts to be fixed. Figure 5 As shown in the drawing (the chain 4 has been omitted in the drawing), the measuring tool 1 is installed on the left shaft, the reference tool 2 is installed on the right shaft, the chains 4 at the bottom of the mounting seats 3 of the two tools are arranged around the shafts to be fixed, the mounting frame is arranged on the mounting seat 3 of the measuring tool 1, the mounting hole 13 on the mounting frame is used for installing the dial gauge 5, the measuring rod of the dial gauge 5 is arranged in the mounting hole 13, the first locking piece 14 is arranged through the first mounting rod 11 and the second mounting rod 12, and the first locking piece 14 is arranged perpendicularly to the axial direction of the mounting hole 13, so that the dial gauge 5 installed in the mounting hole 13 can be pressed tightly, as shown in the drawing, the dial gauge 5 on the first mounting rod 11 is arranged along the axial direction of the two shafts, the dial gauge 5 on the second mounting rod 12 is arranged along the radial direction of the two shafts, the contact of the dial gauge 5 on the first mounting rod 11 points to the end of the reference rod 24, and the contact of the dial gauge 5 on the second mounting rod 12 points to the top of the outer periphery of the reference rod 24, so that the measurement data of the outer periphery and the end surface of the shaft to be measured can be obtained by measuring the outer periphery and the end surface of the reference rod 24, wherein the sliding block 23 can move up and down in the sliding groove 22, the reference rod 24 is arranged through the sliding block 23 and is connected with the sliding block 23 in a sliding mode, so that the position of the reference rod 24 can be adjusted, and when the shafts with different diameters are measured, the reference rod 24 can be aligned with the dial gauge 5 by moving the sliding block 23 and the reference rod 24, thereby facilitating the subsequent measurement work.

[0033] It should be noted that the surface of the shaft to be measured may have certain quality problems such as rust, pits and protrusions due to various reasons, therefore, the measurement of the shaft to be measured is converted into the measurement of the reference rod 24 by arranging the reference rod 24, the error caused by the above-mentioned surface defects of the shaft can be avoided, and the measurement data is more accurate and reliable; it is worth mentioning that the reference rod 24 is made of high-hardness alloy, the surface of the reference rod 24 is smooth and flat, and the measurement result is accurate.

[0034] It can be understood that, as shown in the drawing, the first mounting rod 11 and the second mounting rod 12 are connected by screws, and the screws can be disassembled and stored when not in use, thereby occupying small space.

[0035] Please refer to Figure 2 and Figure 4 In this embodiment, the bottom of the mounting seat 3 is provided with two clamping plates 31, the bottom of the clamping plate 31 is provided with a clamping groove 311, the clamping groove 311 is triangular in shape, the triangular clamping groove 311 can enhance the stability of the clamping plate 31 placed on the shaft, and can be suitable for shafts of different diameters. Two positioning holes 312 are arranged on the two clamping plates 31 respectively, a positioning pin (not shown in the figure) is installed in the positioning hole 312, and the positioning hole 312 and the positioning pin are used for positioning and fixing the two clamping plates 31, so that the two clamping plates 31 are aligned. The two clamping plates 31 are connected and fixed with the mounting seat 3 by screws, can be disassembled, and are convenient for storage.

[0036] It should be noted that there is a gap between the two clamping plates 31, and the two ends of the chain 4 pass through the gap and are connected with the mounting seat 3. The two clamping plates 31 can provide space for the chain 4, so that the chain 4 does not directly abut against the side surface of the mounting seat 3 during installation, thereby reducing the pressure on the mounting seat 3 and protecting the overall structure.

[0037] Please refer to Figure 1 and Figure 3 In this embodiment, a fastener 32 is threadedly mounted on the mounting seat 3, one end of the chain 4 is detachably connected with the fastener 32, and the other end is fixedly connected with the mounting seat 3. By rotating the fastener 32, the chain 4 can be locked on the shaft to be measured, thereby being fixed. Since the chain 4 is detachably connected with the fastener 32, during installation, only the end of the chain 4 connected with the fastener 32 needs to be disassembled, and after winding around the shaft for one turn, it is connected with the fastener 32 again, so that the installation is completed. The shaft coupling at the end to be measured does not need to be disassembled, and the use is more convenient.

[0038] Specifically, in order to facilitate use, the fastener 32 is a screw with a knob, and the end of the chain 4 is provided with a threaded hole. After the fastener 32 is connected with the chain 4, the tightness of the chain 4 can be adjusted by rotating the knob.

[0039] Please refer to Figure 3 In this embodiment, the sliding block 23 is composed of a first connecting block 231 and a second connecting block 232. The first connecting block 231 and the second connecting block 232 are respectively located on both sides of the supporting rod 21. Threaded holes are formed in the first connecting block 231 and the second connecting block 232, and a second locking member 233 is installed in the threaded hole. The first connecting block 231 and the second connecting block 232 are connected together through the second locking member 233. The second locking member 233 is used for locking the sliding block 23. When the sliding block 23 needs to be locked, the two connecting blocks are made close to and clamp the supporting rod 21 by rotating the second locking member 233, so that the entire sliding block 23 is fixed in the sliding groove 22.

[0040] Specifically, for the convenience of rotation, the end of the second locking member 233 is provided with a knob, and only the knob needs to be rotated during adjustment, which is convenient to operate.

[0041] It can be understood that, in the embodiment, the second connecting block 232 is provided with a hole for installing the reference rod 24, and the reference rod 24 is in sliding connection with the second connecting block 232 through the hole. In addition, a hole matched with the reference rod 24 can also be formed in the first connecting block 231, so that the reference rod 24 is installed in the first connecting block 231. The specific adjustment can be made according to actual needs.

[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0043] In the description of the utility model, it should be understood that the terms such as “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0044] In addition, the terms “first” and “second” are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by “first” and “second” can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of “multiple” is two or more, unless otherwise specifically limited.

[0045] In the utility model, unless otherwise specifically defined and limited, the terms “installation”, “connection”, “connection”, “fixing” and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A machine pump aligner characterized by, The utility model provides measuring fixture and benchmark fixture, measuring fixture and benchmark fixture are equipped with mounting seat and chain, both ends of chain are connected with two sides of mounting seat respectively, measuring fixture includes mounting frame, mounting frame includes vertical first mounting rod and second mounting rod, first mounting rod and second mounting rod are equipped with mounting hole and first locking piece, first locking piece is installed in one side of mounting hole, benchmark fixture includes support rod, support rod is equipped with sliding slot, sliding block is slidably installed in sliding slot, benchmark rod is slidably installed on sliding block.

2. The machine pump aligner of claim 1, wherein, The bottom of the mounting seat is provided with two clamping plates, the bottom of the clamping plate is provided with a clamping groove, and the clamping groove is triangular in shape.

3. The machine pump aligner of claim 2, wherein, At least two positioning holes are formed in each of the two clamping plates, and a positioning pin is installed in the positioning hole.

4. The machine pump aligner of claim 1, wherein, A fastener is threadedly installed on the mounting seat, and one end of the chain is detachably connected with the fastener.

5. The machine pump aligner of claim 1, wherein, The benchmark fixture further comprises a second locking piece for locking the sliding block, and the second locking piece is threadedly connected with the sliding block.

6. The machine pump aligner of claim 5, wherein, The sliding block comprises a first connecting block and a second connecting block, the first connecting block and the second connecting block are respectively located on both sides of the support rod, and screw holes matched with the second locking piece are formed in the first connecting block and the second connecting block.

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