Tool for detecting circle run-out of crankshaft in field of drilling pumps

Abstract

The utility model discloses a tool for detecting the circular run-out of a crankshaft in the field of drilling pumps, relates to the technical field of drilling pumps, and aims to solve the technical problems that a crankshaft manufacturing unit inspects the circular run-out of the crankshaft after leaving a factory, and whether the circular run-out of the crankshaft is qualified or not when the crankshaft purchased by a using unit enters the factory for inspection. According to the technical scheme, only a pipe joint for simulating a rotary joint, a joint body for simulating the rotary joint and other standard parts such as simple parts and bolts need to be manufactured, and the tool for detecting the circle run-out of the crankshaft in the field of the drilling pump is simple in structure and convenient to use. The device is low in cost, and can solve the technical problem of crankshaft circle run-out detection in the field of drilling pumps.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of drilling pump field, especially a kind of tool for detecting crankshaft circle run-out in drilling pump field. BACKGROUND

[0002] Now there is a drilling pump, adopt the rotating joint of two ends installation crankshaft, rotating joint of two ends installation crankshaft is mainly composed of joint body component, rolling bearing, pipe joint component three major parts.Joint body component is connected with the oil pipe of the output of drilling pump lubricating oil pump, pipe joint component is connected with the rotating crankshaft, along with the rotating movement of crankshaft, there is rolling bearing between joint body component and pipe joint component that rotates with crankshaft, there is lubricating oil passage in joint body component and pipe joint component, lubricating oil is exported from lubricating oil pump, enters the lubricating oil pipeline in crankshaft through oil pipe-joint body component-pipe joint component inner hole to lubricate the connecting rod bearing of crankshaft.This structure often appears the damage situation of pipe joint component, observation phenomenon is that the joint body component of rotating joint is in the rotating work state of crankshaft, the position of joint body component is in the ceaseless run-out change relative to crankshaft, causes the ceaseless run-out change of the connection of joint body component and the oil pipe of the output of drilling pump lubricating oil pump, and drilling pump lubricating oil pump is fixed, the oil pipe of the output of drilling pump lubricating oil pump is fixed at drilling pump lubricating oil pump end, so that one end of oil pipe is fixed, the other end of oil pipe is ceaselessly run-out change with joint body component, this run-out change causes the dynamic load that should not appear to pipe joint component, and long time dynamic load will cause pipe joint component damage.The reason that the joint body component of rotating joint is in the rotating work state of crankshaft, the position of joint body component is in the ceaseless run-out change relative to crankshaft is one of the reasons of the round run-out of two ends installation rotating joint position of crankshaft is out of tolerance.Although drilling pump using unit designs have the tolerance requirement of the round run-out of two ends installation rotating joint position of crankshaft, because there is no special round run-out detection tool of two ends installation rotating joint position of crankshaft, crankshaft production enterprise does not have the special detection of the round run-out of two ends installation rotating joint position of crankshaft, drilling pump using unit also does not have the special detection of the round run-out of two ends installation rotating joint position of crankshaft when factory acceptance of crankshaft, until drilling pump assembly is exposed quality problem, and there is no time to replace qualified crankshaft after discovering quality problem, cause to reduce the precision of the design drilling pump as a whole, if re-do qualified crankshaft, seriously affect assembly progress.Therefore, a kind of tool for detecting crankshaft circle run-out in drilling pump field is needed, which needs to check the round run-out of two ends installation rotating joint position of crankshaft when crankshaft manufacturing unit leaves factory, and the round run-out of two ends installation rotating joint position of crankshaft is checked when using unit purchases factory acceptance, so that the precision of the design drilling pump as a whole is not reduced, and the progress of drilling pump assembly is not affected, which becomes a problem to be solved urgently. SUMMARY

[0003] The utility model aims at providing a tool for detecting crankshaft circle run-out in drilling pump field.

[0004] The technical scheme of the utility model discloses the following:

[0005] The utility model discloses a technical scheme includes crankshaft, dial gauge and seat, simulate the pipe joint of rotary joint, bolt, simulate the joint body of rotary joint, handle, crankshaft end positioning inner hole, crankshaft end screw hole, crankshaft end positioning end face, crankshaft end mounting bearing outer circle, dial gauge seat support surface, dial gauge contact, simulate pipe joint positioning arc surface, simulate joint positioning end face, simulate pipe joint positioning outer circle surface, simulate pipe joint through -hole, simulate pipe joint thread hole, simulate pipe joint pressure surface, simulate pipe joint positioning outer circle maximum diameter value, simulate joint body plane, simulate joint body close to crankshaft end face, simulate joint body positioning inner circle surface, simulate joint body screw hole, simulate joint body positioning inner circle maximum diameter value, handle outer thread.

[0006] Simulate pipe joint positioning outer circle surface and simulate joint body positioning inner circle surface are taper surface cooperation, and cooperation clearance is 0;

[0007] Simulate pipe joint positioning outer circle maximum diameter value is greater than simulate joint body positioning inner circle maximum diameter value;

[0008] Simulate pipe joint positioning arc surface axis and simulate joint positioning end face perpendicularity are 0 ~ 0.01mm;

[0009] Simulate pipe joint positioning arc surface axis and simulate pipe joint positioning outer circle surface axis coaxiality are 0 ~ 0.01mm;

[0010] Simulate pipe joint positioning arc surface maximum value and the interference of crankshaft end positioning inner hole are 0 ~ 0.04mm;

[0011] In the field of drilling pump, when detecting the crankshaft round runout, the crankshaft is fixed, the pipe joint of the simulation rotary joint is fixed with the crankshaft, the fixing method is that the simulation pipe joint positioning arc surface is installed in the positioning inner hole of the crankshaft end, four bolts are respectively inserted through the through holes of the simulation pipe joint, and are screwed into the four bolt holes of the crankshaft end, the four bolts are tightened, the simulation joint positioning end surface and the crankshaft end positioning end surface are attached together through the pressing surface of the simulation pipe joint, and the pipe joint of the simulation rotary joint is fixed with the crankshaft. The dial gauge and the seat are connected with the joint body of the simulation rotary joint, the connection method is that the support surface of the dial gauge seat is magnetically attracted to the plane of the simulation joint body. The simulation joint body positioning inner circular surface and the simulation pipe joint positioning outer circular surface are matched without gap, the simulation joint body close to the crankshaft end surface and the crankshaft end positioning end surface keep a gap, the dial gauge and the seat keep a gap with the crankshaft end positioning end surface, the dial gauge contact is adjusted to contact the outer circle of the crankshaft end bearing, the handle outer thread is screwed into the screw hole of the simulation joint body, the dial gauge and the seat connected together and the joint body of the simulation rotary joint are rotated, and the dial gauge contact can measure the round runout around the outer circle of the crankshaft end bearing. The dial gauge detection position can be moved, so that the round runout of multiple sections of the outer circle of the crankshaft end bearing can be detected.

[0012] The technical scheme that the simulation pipe joint positioning outer circular surface and the simulation joint body positioning inner circular surface are matched as taper surfaces with a gap of 0 eliminates the measurement error caused by the gap between the simulation pipe joint positioning outer circular surface and the simulation joint body positioning inner circular surface.

[0013] The technical scheme that the maximum value of the simulation pipe joint positioning arc surface and the interference amount of the crankshaft end positioning inner hole are 0-0.04mm eliminates the measurement error caused by the gap between the maximum value of the simulation pipe joint positioning arc surface and the crankshaft end positioning inner hole.

[0014] In order to meet the perpendicularity of the simulation pipe joint positioning arc surface axis and the simulation joint positioning end surface of 0-0.01mm and the coaxiality of the simulation pipe joint positioning arc surface axis and the simulation pipe joint positioning outer circular surface axis of 0-0.01mm, only a small numerical control horizontal lathe is needed to clamp the simulation pipe joint part once, and the simulation pipe joint positioning arc surface, the simulation joint positioning end surface and the simulation pipe joint positioning outer circular surface of the pipe joint of the simulation rotary joint can be machined in one process.

[0015] In order to meet the requirements of easy installation and removal under the condition that the maximum value of the positioning arc surface of the simulation pipe joint is equal to the interference amount of the positioning inner hole of the crankshaft end, the technical scheme is that the structure of the positioning arc surface of the simulation pipe joint is adopted. Since the interference fit length of the positioning arc surface of the simulation pipe joint and the positioning inner hole of the crankshaft end is a line, four bolts are respectively inserted into the through holes of the simulation pipe joint and screwed into the screw holes of the crankshaft end, and the four bolts are tightened, so that the positioning arc surface of the simulation pipe joint is easily pressed into the positioning inner hole of the crankshaft end. After detection, the four bolts are removed from the screw holes of the crankshaft end and are respectively screwed into the threaded holes of the simulation pipe joint, and the six sides of the bolt heads are moved by using a wrench, so that the positioning arc surface of the simulation pipe joint is easily pulled out of the positioning inner hole of the crankshaft end.

[0016] By adopting the above technical scheme, the tool measurement error of the embodiment in the field of drilling pumps for detecting the roundness runout of 0.07 mm of the bearing outer circle of the crankshaft end relative to the positioning inner hole of the crankshaft end and the positioning end face of the crankshaft end is only two items, i.e. the perpendicularity of the axis of the positioning arc surface of the simulation pipe joint and the positioning end face of the simulation joint is 0-0.01 mm, and the coaxiality of the axis of the positioning arc surface of the simulation pipe joint and the axis of the positioning outer surface of the simulation pipe joint is 0-0.01 mm, and the sum of the two items is controlled to be 0.02 mm, which meets the requirement of ISO 14253-1 that the error of the gauge should be less than 1 / 3 of the tolerance 0.07 mm.

[0017] By adopting the embodiment, only a pipe joint of a simulation rotary joint, a joint body of the simulation rotary joint and other simple parts and standard parts are needed, so that the roundness runout of the crankshaft can be checked at the factory of the crankshaft manufacturer, and whether the roundness runout of the crankshaft is qualified can be checked when the crankshaft purchased by the user is brought into the factory, so that the overall precision of the design of the drilling pump is not reduced, and the progress of the general assembly of the drilling pump is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 - Exploded view of the tool for detecting the roundness runout of the crankshaft in the field of drilling pumps;

[0019] Figure 2 - Front view of the crankshaft in the field of drilling pumps and C-C and D-D sectional views;

[0020] Figure 3 - E and F partial enlarged views of the crankshaft; Figure 2

[0021] Figure 4 - Front view of the micrometer and the seat;

[0022] Figure 5 - Front view, A-A and B-B sectional views and C partial enlarged view of the pipe joint of the simulation rotary joint;

[0023] Figure 6 ​- joint body front view and A-A sectional view of the simulated rotary joint;

[0024] Figure 7 - handle front view;

[0025] Figure 8 - right end circle runout detection stereogram of the crankshaft in the field of drilling pump;

[0026] Figure 9 - right end circle runout detection front view, A-A sectional view and B local enlarged view of the crankshaft in the field of drilling pump;

[0027] Figure 10 - right end circle runout detection stereogram of the crankshaft in the field of drilling pump;

[0028] 1-crankshaft, 2-dial gauge and seat, 3-pipe joint of the simulated rotary joint, 4-bolt, 5-joint body of the simulated rotary joint, 6-handle, 1.1-crankshaft end positioning inner hole, 1.2-crankshaft end screw hole, 1.3-crankshaft end positioning end face, 1.4-crankshaft end mounting bearing outer circle, 2.1-dial gauge seat support face, 2.2-dial gauge contact, 3.1-simulated pipe joint positioning arc face, 3.2-simulated pipe joint positioning end face, 3.3-simulated pipe joint positioning outer circle face, 3.4-simulated pipe joint through hole, 3.5-simulated pipe joint screw hole, 3.6-simulated pipe joint pressing face, 5.1-simulated joint body plane, 5.2-simulated joint body close to crankshaft end face, 5.3-simulated joint body positioning inner circle face, 5.4-simulated joint body screw hole, 6.1-handle outer thread. DETAILED DESCRIPTION

[0029] The utility model will be further explained in connection with the drawings and specific embodiments.

[0030] The embodiments of the utility model are not limited to the following examples, and various changes made without departing from the purpose of the utility model are within the scope of protection of the utility model.

[0031] Please refer to Figures 1-10The embodiment is a tool for detecting the round runout of a crankshaft in the field of drilling pumps, comprising a crankshaft 1, a micrometer and a seat 2, a pipe joint 3 simulating a rotary joint, a bolt 4, a joint body 5 simulating a rotary joint, a handle 6, a crankshaft end positioning inner hole 1.1, a crankshaft end screw hole 1.2, a crankshaft end positioning end face 1.3, a crankshaft end mounting bearing outer circle 1.4, a micrometer seat supporting surface 2.1, a micrometer contact 2.2, a simulated pipe joint positioning circular arc surface 3.1, a simulated joint positioning end face 3.2, a simulated pipe joint positioning outer circular surface 3.3, a simulated pipe joint through hole 3.4, a simulated pipe joint threaded hole 3.5, a simulated pipe joint pressing surface 3.6, a simulated joint body flat surface 5.1, a simulated joint body end face close to the crankshaft 5.2, a simulated joint body positioning inner circular surface 5.3, a simulated joint body threaded hole 5.4, and an outer thread 6.1 of the handle.

[0032] The simulated pipe joint positioning outer circular surface 3.3 and the simulated joint body positioning inner circular surface 5.3 are conical surfaces matched with a clearance of 0;

[0033] The maximum diameter value 3.7 of the simulated pipe joint positioning outer circular surface is greater than the maximum diameter value 5.5 of the simulated joint body positioning inner circular surface;

[0034] The perpendicularity of the simulated pipe joint positioning circular arc surface 3.1 axis and the simulated joint positioning end face 3.2 is 0-0.01 mm;

[0035] The coaxiality of the simulated pipe joint positioning circular arc surface 3.1 axis and the simulated pipe joint positioning outer circular surface 3.3 axis is 0-0.01 mm;

[0036] The maximum value of the simulated pipe joint positioning circular arc surface 3.1 and the interference amount of the crankshaft end positioning inner hole 1.1 are 0-0.04 mm;

[0037] In the field of drilling pump, when detecting the crankshaft round runout, the crankshaft 1 is fixed, the pipe joint 3 of the simulation rotary joint is fixed with the crankshaft 1, the fixed method is that the simulation pipe joint positioning circular arc surface 3.1 is installed in the crankshaft end positioning inner hole 1.1, four bolts 4 are respectively passed through four through holes 3.4 of the simulation pipe joint, screwed into four crankshaft end screw holes 1.2, the four bolts 4 are tightened, the simulation joint positioning end surface 3.2 and the crankshaft end positioning end surface 1.3 are adhered together through the simulation pipe joint pressing surface 3.6, so that the pipe joint 3 of the simulation rotary joint is fixed with the crankshaft 1. The micrometer and the seat 2 and the joint body 5 of the simulation rotary joint are connected together, the connection method is that the micrometer seat supporting surface 2.1 is magnetically attracted to the simulation joint body plane 5.1 by itself. The simulation joint body positioning inner circular surface 5.3 and the simulation pipe joint positioning outer circular surface 3.3 are matched without gap, because the maximum diameter of the simulation pipe joint positioning outer circular surface 3.3 is greater than the maximum diameter of the simulation joint body positioning inner circular surface 5.3, the simulation joint body close to the crankshaft end surface 5.2 and the crankshaft end positioning end surface 1.3 keep a gap, the micrometer and the seat 2 and the crankshaft end positioning end surface 1.3 also keep a gap, the micrometer contact 2.2 and the crankshaft end installation bearing outer circle 1.4 are contacted, the handle outer thread 6.1 is screwed into the simulation joint body screw hole 5.4, the micrometer and the seat 2 and the joint body 5 of the simulation rotary joint connected together are rotated, the micrometer contact 2.2 can measure the round runout around the crankshaft end installation bearing outer circle 1.4, the micrometer detection position can be moved, so that the round runout of the crankshaft end installation bearing outer circle 1.4 in multiple sections can be detected.

[0038] The technical scheme that the simulation pipe joint positioning outer circular surface 3.3 and the simulation joint body positioning inner circular surface 5.3 are tapered surface matching with a gap of 0 eliminates the measurement error caused by the gap between the simulation pipe joint positioning outer circular surface 3.3 and the simulation joint body positioning inner circular surface 5.3.

[0039] The technical scheme that the maximum value of the simulation pipe joint positioning circular arc surface 3.1 and the interference amount of the crankshaft end positioning inner hole 1.1 are 0-0.04mm eliminates the measurement error caused by the gap between the maximum value of the simulation pipe joint positioning circular arc surface 3.1 and the crankshaft end positioning inner hole 1.1.

[0040] In order to meet the perpendicularity of the simulation pipe joint positioning circular arc surface 3.1 axis and the simulation joint positioning end surface 3.2 of 0-0.01mm and the coaxiality of the simulation pipe joint positioning circular arc surface 3.1 axis and the simulation pipe joint positioning outer circular surface 3.3 axis of 0-0.01mm, only a small numerical control horizontal lathe is needed to clamp the simulation pipe joint part once, and the simulation pipe joint positioning circular arc surface 3.1, the simulation joint positioning end surface 3.2 and the simulation pipe joint positioning outer circular surface 3.3 of the pipe joint 3 of the simulation rotary joint can be machined in one process.

[0041] In order to meet the requirements of easy installation and dismounting under the condition that the maximum value of the positioning arc surface 3.1 of the simulation pipe joint and the interference amount of the positioning inner hole 1.1 of the crankshaft end are 0-0.04mm, the technical scheme adopted is the structure of the positioning arc surface 3.1 of the simulation pipe joint. Since the interference fit length of the positioning arc surface 3.1 of the simulation pipe joint and the positioning inner hole 1.1 of the crankshaft end is a line, four bolts 4 are respectively passed through four through holes 3.4 of the simulation pipe joint 4, screwed into four crankshaft end screw holes 1.2, and the four bolts 4 are tightened to press the positioning arc surface 3.1 of the simulation pipe joint into the positioning inner hole 1.1 of the crankshaft end. After detection, the four bolts 4 are dismounted from the crankshaft end screw holes 1.2 and screwed into four simulation pipe joint threaded holes 3.5 respectively, and the head hexagon of the four bolts 4 is moved by a wrench to easily lift the positioning arc surface 3.1 of the simulation pipe joint out of the positioning inner hole 1.1 of the crankshaft end.

[0042] By adopting the above technical scheme, the tool measurement error of the roundness runout 0.07mm of the bearing outer circle 1.4 of the crankshaft end relative to the reference of the positioning inner hole 1.1 of the crankshaft end and the reference of the positioning end face 1.3 of the crankshaft end in the drilling pump field of the embodiment is only two items, i.e., the perpendicularity of the axis of the positioning arc surface 3.1 of the simulation pipe joint and the positioning end face 3.2 of the simulation joint is 0-0.01mm and the coaxiality of the axis of the positioning arc surface 3.1 of the simulation pipe joint and the axis of the positioning outer circular surface 3.3 of the simulation pipe joint is 0-0.01mm, and the sum of the two items is controlled to be 0.02mm, which meets the requirement of ISO 14253-1 that the error of the gauge should be less than 1 / 3 of the tolerance 0.07mm.

[0043] By adopting the embodiment, only a pipe joint 3 of a simulation rotary joint, a joint body 5 of the simulation rotary joint and other simple parts and standard parts are needed to check the roundness runout of the crankshaft at the factory of the crankshaft manufacturer and check whether the roundness runout of the crankshaft is qualified when the crankshaft is purchased back to the factory of the user, so that the design precision of the whole drilling pump is not reduced and the progress of the assembly of the drilling pump is not affected.

[0044] The embodiment of the utility model is described in detail, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the art, and these changes all belong to the protection of the utility model and are also within the protection range of the utility model.

Claims

1. A tool for detecting the round runout of a crankshaft in the field of drilling pumps, comprising a dial gauge and seat (2), a pipe joint (3) simulating a rotary joint, and a joint body (5) simulating a rotary joint, characterized in that: the dial gauge and seat (2) is provided with a dial gauge contact (2.2); the pipe joint (3) has a simulated pipe joint positioning arc surface (3.1), a simulated joint positioning end surface (3.2), a simulated pipe joint positioning outer cylindrical surface (3.3), a simulated pipe joint through hole (3.4), and a simulated pipe joint threaded hole (3.5), and the simulated pipe joint positioning outer cylindrical surface (3.3) is a conical surface; the joint body (5) has a simulated joint body flat surface (5.1), a simulated joint body end surface close to the crankshaft (5.2), and a simulated joint body positioning inner cylindrical surface (5.3), and the simulated joint body positioning inner cylindrical surface (5.3) is a conical surface; the conical surface of the simulated pipe joint positioning outer cylindrical surface (3.3) and the conical surface of the simulated joint body positioning inner cylindrical surface (5.3) are mating conical surfaces with the same taper, and the gap between them in the assembled state is zero tight fit; the maximum diameter of the simulated pipe joint positioning outer cylindrical surface (3.3) is greater than the maximum diameter of the simulated joint body positioning inner cylindrical surface (5.3); the perpendicularity of the simulated pipe joint positioning arc surface (3.1) axis and the simulated joint positioning end surface (3.2) is 0-0.01 mm; the coaxiality of the simulated pipe joint positioning arc surface (3.1) axis and the simulated pipe joint positioning outer cylindrical surface (3.3) axis is 0-0.01 mm; and the maximum value of the simulated pipe joint positioning arc surface (3.1) and the interference amount of the crankshaft end positioning inner hole (1.1) are 0-0.04 mm. ​ ​ ​ ​ ​ ​ ​ ​

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