CN108871156B - Device for detecting distance between hole center and reference surface - Google Patents
Device for detecting distance between hole center and reference surface Download PDFInfo
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- CN108871156B CN108871156B CN201811058322.6A CN201811058322A CN108871156B CN 108871156 B CN108871156 B CN 108871156B CN 201811058322 A CN201811058322 A CN 201811058322A CN 108871156 B CN108871156 B CN 108871156B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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Abstract
The utility model relates to an equipment testing field discloses a device for detecting distance between hole center and the reference surface, including the frame, be used for fixing a position first planet axle hole central line's first hole center locating lever and be used for detecting the measuring element of hole center and reference surface distance, measuring element mainly comprises expansion gap, spout, ejector pin, first pointer, gear, rack, connecting rod. According to the scheme, the first hydraulic chamber is matched with each first cylinder, so that the hole center of the first planet shaft hole can be positioned, the hole center is positioned more accurately, and the detection precision and efficiency are improved; the first pointer is located on the horizontal center line of the first hole center positioning rod, the distance between the hole center and the reference surface can be measured through the cooperation of the first pointer and the ejector rod, the measuring method is simple, operation is convenient, and detection efficiency is greatly improved.
Description
Technical Field
The invention belongs to the field of equipment detection, and particularly relates to a differential detection device.
Background
The automobile often needs to change the direction of travel when driving, and in order to guarantee the car stability after the change direction, the rotational speed of power output to wheel hub is different, and the wheel just can produce different linear velocities so that the car can turn smoothly steadily like this. The differential functions to cause the two drive half shafts to produce different rotational speeds. The inner hole of the differential shell comprises a center hole arranged on the flange plate, a half shaft hole arranged at the top of the shell and planet shaft holes arranged at two sides of the shell.
Differential mechanism needs to detect the distance of planet shaft hole centre of a hole and ring flange reference surface in process of production, and present detection method is mostly manual detection, is difficult to carry out accurate location to the hole centre in planet shaft hole during manual detection, leads to detection efficiency low, and the accuracy that detects is also not high.
Disclosure of Invention
The invention aims to provide a device for detecting the distance between a hole center and a reference surface, and aims to solve the problems of low detection efficiency and low detection accuracy of a differential shell in the prior art.
In order to achieve the purpose, the basic scheme of the invention provides a device for detecting the distance between a hole center and a reference surface, which comprises a rack, a first hole center positioning rod for positioning the center line of a first planet shaft hole and a measuring unit for detecting the distance between the hole center and the reference surface, wherein a first cavity is arranged in the first hole center positioning rod, a first sealing plate is connected in the first cavity in a sliding and sealing manner, the first cavity is divided into a first hydraulic chamber and a first movable chamber by the first sealing plate, a first air cylinder is arranged in the first movable chamber, and the output end of the first air cylinder is fixedly connected with the first sealing plate; hydraulic oil is filled in the first hydraulic chamber, a plurality of first cylinders are uniformly arranged on the side part of the first hole center positioning rod, the first cylinders are communicated with the first hydraulic chamber, first pistons are connected in the first cylinders in a sliding and sealing mode, first air chambers are formed by the first pistons and the side parts, far away from the first hydraulic chamber, of the first cylinders, and first air outlet holes are formed in the first air chambers; a first extension rod is fixed on the end face, facing the first air chamber, of the first piston, and one end, far away from the first piston, of the first extension rod extends out of the first cylinder and can abut against the inner wall of the planet shaft hole; the measuring unit comprises a movable opening arranged on the first hole center positioning rod and a sliding chute which is vertically arranged, a first pointer is fixed at a notch of the sliding chute and is positioned on a horizontal central line of the first hole center positioning rod; a top rod is connected in the sliding groove in a sliding mode, scale marks are arranged on the top rod, the top rod is located above the reference surface of the flange plate, a fixed rod is arranged at the top of the top rod, a first spring is arranged on the side portion of the top rod, and one end, far away from the top rod, of the first spring is fixed on a first hole center positioning rod; the movable port is communicated with the first movable chamber; an L-shaped connecting rod is fixed on the first sealing plate, and the top of the connecting rod extends out of the movable opening and is fixedly connected with a horizontally arranged rack; a rotating shaft is rotatably connected on the rack, a gear meshed with the rack is mounted on the rotating shaft, and a pressure rod is eccentrically hinged on the gear; a loop bar is fixed on the frame, the pressure bar is abutted against the loop bar, and one side of the pressure bar, which is far away from the gear, is abutted against the fixed bar.
The principle and the beneficial effect of the basic scheme are as follows:
(1) according to the scheme, the first extension rods uniformly distributed on the first hole center positioning rods can simultaneously extend out and abut against the inner wall of the first planet shaft hole through the matching of the first hydraulic chamber and each first cylinder body, so that the horizontal central line of the first hole center positioning rods is superposed with the horizontal central line of the first planet shaft hole, the positioning of the hole center of the first planet shaft hole is realized, the positioning of the hole center is more accurate, and the detection precision and efficiency are improved; the first pointer is located on the horizontal center line of the first hole center locating rod, the distance between the hole center of the differential shell and the reference surface can be measured through the cooperation of the first pointer and the ejector rod, the measuring method is simple, operation is convenient, and detection efficiency is greatly improved.
(2) This scheme is through the intercommunication between the first barrel of first hydraulic pressure room and a plurality of for hydraulic oil in the first hydraulic pressure room can the equipartition flow in each first barrel, make the volume homoenergetic that each first extension bar stretches out the same, thereby guarantee that first hole heart locating lever is located the horizontal central line in first planet shaft hole, make the horizontal central line in first hole heart locating lever and the horizontal central line coincidence in first planet shaft hole, make things convenient for follow-up distance to hole heart and reference surface to detect.
(3) This scheme drives the motion of rack and gear through the removal of first closing plate to push down the ejector pin through the depression bar, make the bottom and the reference surface of depression bar offset, and read the scale numerical value of ejector pin through the directional position of first pointer, thereby obtain the distance between hole center and the reference surface, do not need user's multiple operation, greatly improved the efficiency of detection and the accuracy that detects.
(4) The first piston of this scheme is at the in-process that drives first extension bar and stretch out, can make its blowout from first venthole with the gaseous extrusion in the first air chamber, clears up first planet shaft hole, will be located the downthehole impurity of first planet shaft and clear away, has further improved the degree of accuracy of hole heart location to make the distance measurement between hole heart and the reference surface more accurate.
(5) The first pointer of this scheme not only can instruct the scale numerical value on the ejector pin, can also play spacing effect to the ejector pin, prevents that the ejector pin from shaking out the spout to the stability that the ejector pin removed has been improved.
The second hole center positioning rod is used for positioning the central line of a second planet shaft hole, a second cavity is arranged in the second hole center positioning rod, a second sealing plate and a third sealing plate are connected in the second cavity in a sliding and sealing mode, a second hydraulic chamber is formed between the second sealing plate and the third sealing plate, a second movable chamber is formed between the second sealing plate and the side portion of the second cavity, a second cylinder is arranged in the second movable chamber, and the output end of the second cylinder is fixedly connected with the second sealing plate; hydraulic oil is filled in the second hydraulic chamber, a plurality of second cylinder bodies are uniformly arranged on the side part of the second hole center positioning rod, and the diameter of each second cylinder body is smaller than that of the second cavity; the second cylinder is communicated with the second hydraulic chamber, a second piston is connected in the second cylinder in a sliding and sealing mode, a second air chamber is formed by the second piston and the side part, far away from the second hydraulic chamber, of the second cylinder, and a second air outlet hole is formed in the second air chamber; a second extension rod is fixed on the end face, facing the second air chamber, of the second piston, and one end, far away from the second piston, of the second extension rod extends out of the second cylinder and can abut against the inner wall of the second planet shaft hole; a through hole is formed in one end, close to the first hole center positioning rod, of the second hole center positioning rod, the through hole is communicated with the second cavity, an inserting rod is connected in the through hole in a sliding mode and fixed on the third sealing plate, a positioning groove is formed in the end portion of the first hole center positioning rod, and the inserting rod is matched with the positioning groove; and a second spring is fixed on one side of the third sealing plate close to the through hole, and one end of the second spring, which is far away from the third sealing plate, is fixed on the inner wall of the second cavity.
The second cylinder promotes the second closing plate and removes left, because the diameter of second barrel is less than the diameter of second cavity, make the indoor hydraulic oil of second hydraulic pressure get into in the second barrel and promote the volume that the second piston removed and be greater than the volume that promotes the removal of third closing plate, thereby the speed that makes the inserted bar move left is less than the speed that the second extension bar stretches out, make the second extension bar in the second barrel offset with the inner wall in second planet shaft hole earlier, let the horizontal center line in second hole center locating lever and the coincidence of the horizontal center line in second planet shaft hole, realize the location of second planet shaft hole center, then the inserted bar just is close to the constant head tank of first hole center locating lever. At this moment, if the inserted link can insert the constant head tank smoothly in, then the hole center that shows first planet shaft hole and the hole center in second planet shaft hole are located same water flat line, and the axiality in first planet shaft hole and second planet shaft hole accords with the processing requirement, otherwise then the axiality in first planet shaft hole and second planet shaft hole is not conform to the processing requirement to realize the detection of first planet shaft hole and second planet shaft hole axiality.
This scheme carries out the hole center location to second planet shaft hole earlier, and the convenience detects the distance of hole center and reference surface, and then whether the hole center after detecting the location is coaxial with the hole center in first planet shaft hole, has improved the accuracy that first planet shaft hole and second planet shaft hole axiality detected greatly. This scheme has realized the detection of first planet shaft hole and second planet shaft hole axiality simultaneously and the detection of hole heart and reference surface distance, has improved the efficiency that the user detected to differential mechanism greatly.
Furthermore, a second pointer is arranged at one end of the second hole center positioning rod and is positioned on the horizontal center line of the second hole center positioning rod, a guide rail is vertically arranged on one side, close to the second planetary shaft hole, of the rack, a graduated scale is connected in the guide rail in a sliding mode, and the graduated scale is in contact with the second pointer; the bottom of the graduated scale is horizontally provided with a flat plate, and the top surface of the flat plate is the initial position of the graduation; a limiting plate used for enabling the top surface of the flat plate and the reference surface of the flange plate to be positioned on the same horizontal line is fixed on the rack; the bottom of the flat plate is fixedly connected with a third spring, and the bottom of the third spring is fixed on the rack.
Through the cooperation of scale and second pointer, can acquire the distance value between second planet shaft hole center and the ring flange reference surface, then get this numerical value and first planet shaft hole center and reference surface distance value's average value as the distance value of hole center and reference surface, strengthened measuring accuracy greatly. In addition, the limiting plate can press the flat plate at the bottom of the graduated scale, so that the top surface of the flat plate and the reference surface of the flange plate are positioned on the same horizontal line, and the initial position of the initial numerical value of the graduated scale and the reference surface of the flange plate are positioned on the same horizontal line, thereby further improving the measuring accuracy.
Furthermore, the part of the second hole center positioning rod provided with the second pointer is detachably connected with a protective sleeve.
The protective sheath can play the guard action to the second pointer when the second pointer is not measured, prevents the second pointer rupture, also can prevent simultaneously that the second pointer fish tail user.
Further, a switch is installed at the bottom of the positioning groove and electrically connected with a buzzer, and the buzzer is installed in the first hole center positioning rod.
When the inserted link is inserted into the positioning groove, the switch is pressed, and the switch is opened, so that the buzzer makes a sound, and a user is reminded that the inserted link is successfully inserted into the positioning groove.
Furthermore, a supporting rod is fixed on one side, close to the first planetary shaft hole, of the rack, and the top surface of the supporting rod can abut against the first hole center positioning rod.
The bracing piece can play the effect of support to the left end of first hole heart locating lever, prevents that the ejector pin from driving the left end of first hole heart locating lever and moving down.
Drawings
FIG. 1 is a front cross-sectional view of an apparatus for detecting the distance between the center of a hole and a reference plane according to the present invention;
FIG. 2 is an enlarged view of the first hole center positioning rod of FIG. 1;
fig. 3 is an enlarged view of the second hole center positioning rod in fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a rack 1, a differential 2, a first planet shaft hole 3, a second planet shaft hole 4, a first hole center positioning rod 5, a first hydraulic chamber 6, a first movable chamber 7, a first sealing plate 8, a first cylinder 9, a first piston 10, a first extension rod 11, a first air chamber 12, a first air cylinder 13, a connecting rod 14, a rack 15, a gear 16, a pressure rod 17, a loop bar 18, a fixed rod 19, a push rod 20, a first pointer 21, a second hole center positioning rod 22, a second hydraulic chamber 23, a second movable chamber 24, a second sealing plate 25, a third sealing plate 26, a second cylinder 27, a second piston 28, a second extension rod 29, a second air chamber 30, a second air cylinder 31, an inserted rod 32, a second pointer 33, a graduated scale 34, a guide rail 35, a limiting plate 36, a flat plate 37, a support rod 38 and a positioning groove 39.
The embodiment is basically as shown in the attached figure 1:
a device for detecting the distance between a hole center and a reference surface mainly comprises a rack 1, a first hole center positioning rod 5, a second hole center positioning rod 22 and a measuring unit, wherein the first hole center positioning rod 5 is used for positioning the central line of a first planet shaft hole 3, the second hole center positioning rod 22 is used for positioning the central line of a second planet shaft hole 4, and the measuring unit is used for detecting the distance between the hole center and the reference surface.
As shown in fig. 2, a first cavity is arranged in the middle of the first hole center positioning rod 5, a first sealing plate 8 is connected in the first cavity in a sliding and sealing manner, the first cavity is divided into a first hydraulic chamber 6 and a first movable chamber 7 by the first sealing plate 8, a first cylinder 13 is installed in the first movable chamber 7, and an output end of the first cylinder 13 is fixedly connected with the first sealing plate 8. Hydraulic oil is equipped with in the first hydraulic pressure room 6, the lateral part circumference of first hole center locating lever 5 and be provided with four first barrels 9 evenly, first barrel 9 and first hydraulic pressure room 6 intercommunication, it has first piston 10 to slide and sealing connection in first barrel 9, the lateral part that first hydraulic pressure room 6 was kept away from with first barrel 9 to first piston 10 forms first air chamber 12, be equipped with first venthole on the first air chamber 12, and the rigid coupling has first reset spring in the first air chamber 12, first reset spring's free end offsets with first piston 10. A first extension rod 11 is fixed on the end surface of the first piston 10 facing the first air chamber 12, and one end of the first extension rod 11 far away from the first piston 10 penetrates through the first cylinder 9 and can be abutted against the inner wall of the planet shaft hole. The right end part of the first hole center positioning rod 5 is provided with a positioning groove 39, a switch is arranged at the groove bottom of the positioning groove 39, the switch is electrically connected with a buzzer, and the buzzer is arranged in the first hole center positioning rod 5. A support rod 38 is fixedly connected to the left side of the frame 1, and the top surface of the support rod 38 can abut against the first hole center positioning rod 5.
The measuring unit mainly comprises a movable opening, a sliding groove, an ejector rod 20, a first pointer 21, a gear 16, a rack 15 and a connecting rod 14, wherein the movable opening and the sliding groove are arranged on the left part of the first hole center positioning rod 5, the sliding groove is vertically arranged, the first pointer 21 is welded at a notch of the sliding groove, and the first pointer 21 is located on the horizontal center line of the first hole center positioning rod 5. An ejector rod 20 is vertically connected in the sliding groove in a sliding mode, scale marks are arranged on the ejector rod 20, and the ejector rod 20 is located above the reference surface of the flange plate and is in contact with a first pointer 21. The bottom end of the ejector rod 20 is the initial position of the scale, the top of the ejector rod 20 is riveted with a fixed rod 19, the left side of the ejector rod 20 is fixedly connected with a first spring, and one end of the first spring, which is far away from the ejector rod, is fixedly connected to the first hole center positioning rod 5. The movable opening is communicated with the first movable chamber 7, an L-shaped connecting rod 14 is fixedly connected to the first sealing plate 8, the connecting rod 14 can move in the movable opening, and a rack 15 which is horizontally arranged extends out of the top of the connecting rod 14 and is welded on the top of the connecting rod 14. A rotating shaft is rotatably connected to the left side of the rack 1, a gear 16 meshed with the rack 15 is installed on the rotating shaft, and a pressure rod 17 is eccentrically hinged to the gear 16; the frame 1 is riveted with a loop bar 18, the middle part of the pressure bar 17 is propped against the bottom of the loop bar 18, and the left side part of the pressure bar 17 is propped against the upper part of the fixed bar 19.
As shown in fig. 3, a second cavity is arranged in the second hole center positioning rod 22, a second sealing plate 25 and a third sealing plate 26 are connected in the second cavity in a sliding and sealing manner, a second hydraulic chamber 23 is formed between the second sealing plate 25 and the third sealing plate 26, a second movable chamber 24 is formed between the second sealing plate 25 and the side portion of the second cavity, a second cylinder 31 is installed in the second movable chamber 24, and an output end of the second cylinder 31 is fixedly connected with the second sealing plate 25. The second hydraulic chamber 23 is filled with hydraulic oil, four second cylinders 27 are circumferentially and uniformly arranged on the side of the second hole center positioning rod 22, the diameter of each second cylinder 27 is smaller than that of each second chamber, and preferably, the diameter of each second cylinder 27 is 1/4 of the diameter of each second chamber. The second cylinder 27 is communicated with the second hydraulic chamber 23, a second piston 28 is slidably and hermetically connected in the second cylinder 27, a second air chamber 30 is formed on the side portions, far away from the second hydraulic chamber 23, of the second piston 28 and the second cylinder 27, a second air outlet is formed in the second air chamber 30, a second return spring is fixedly connected in the second air chamber 30, and the free end of the second return spring abuts against the second piston 28. A second extension rod 29 is fixedly connected to the end surface of the second piston 28 facing the second air chamber 30, and the end of the second extension rod 29 far away from the second piston 28 penetrates through the second cylinder 27 and can abut against the inner wall of the second planet shaft hole 4. The left part of the second hole center positioning rod 22 is provided with a through hole which is communicated with the second cavity, an inserting rod 32 is connected in the through hole in a sliding manner, the right end of the inserting rod 32 is fixedly connected to the third sealing plate 26, and the left end of the inserting rod 32 is matched with the positioning groove 39 of the first hole center positioning rod 5. And a second spring is fixed on the left side of the third seal, and the left end of the second spring is fixedly connected to the inner wall of the second chamber.
A second pointer 33 is fixed at the right end of the second hole center positioning rod 22, the second pointer 33 is located on the horizontal center line of the second hole center positioning rod 22, and a protective sleeve is sleeved at the right part of the second hole center positioning rod 22.
A guide rail 35 is fixedly connected to the right side of the rack 1 in the vertical direction, a graduated scale 34 is connected in the guide rail 35 in a sliding mode, and the graduated scale 34 is in contact with the second pointer 33. A flat plate 37 is horizontally arranged at the bottom of the graduated scale 34, and the top surface of the flat plate 37 is the initial position of the graduation; a limiting plate 36 is riveted to the right side of the frame 1, and the limiting plate 36 is used for enabling the top surface of the flat plate 37 and the reference surface of the flange plate to be located on the same horizontal line, so that the scale numerical value pointed by the second pointer 33 is the distance between the hole center of the second planet shaft hole 4 and the reference surface. The bottom of the flat plate 37 is fixedly connected with a third spring, the bottom of the third spring is fixed on the frame 1, and the third spring is a compression spring.
The specific implementation process is as follows:
when the differential mechanism works, the differential mechanism 2 is placed on the rack 1, the first hole center positioning rod 5 is inserted into the first planet shaft hole 3, the first air cylinder 13 is started, the first air cylinder 13 pushes the first sealing plate 8 to move rightwards, on one hand, hydraulic oil in the first hydraulic chamber 6 can uniformly flow into the four first cylinders 9, so that the four first pistons 10 are simultaneously pushed to move in the direction away from the first hydraulic chamber 6, the four first extension rods 11 simultaneously extend out and abut against the inner wall of the first planet shaft hole 3, the horizontal center line of the first hole center positioning rod 5 is overlapped with the horizontal center line of the first planet shaft hole 3, and the positioning of the hole center of the first planet shaft hole 3 is realized; on the other hand, the first sealing plate 8 can drive the rack 15 to move right through the L-shaped connecting rod 14, the rack 15 moves right to enable the gear 16 to rotate anticlockwise, so that the right end of the pressure rod 17 moves upwards and the left end of the pressure rod 17 moves downwards, the left end of the pressure rod 17 pushes the ejector rod 20 to move downwards by applying pressure to the fixed rod 19, the bottom of the ejector rod 20 abuts against the flange plate reference surface, the first pointer 21 is located on the horizontal center line of the first hole center positioning rod 5, and the scale numerical value indicated by the first pointer 21 is the distance between the hole center of the first planet shaft hole 3 and the reference surface.
Next, the second hole center positioning rod 22 is inserted into the second planetary shaft hole 4, the second cylinder 31 is started, the second cylinder 31 pushes the second sealing plate 25 to move leftward, and since the diameter of the second cylinder 27 is smaller than that of the second chamber, the hydraulic oil in the second hydraulic chamber 23 enters the second cylinder 27 to push the second piston 28 to move by an amount larger than that of pushing the third sealing plate 26 to move, so that the speed of leftward movement of the insertion rod 32 is smaller than that of extension of the second extension rod 29, the second extension rod 29 in the second cylinder 27 abuts against the inner wall of the second planetary shaft hole 4 first, the horizontal center line of the second hole center positioning rod 22 is overlapped with the horizontal center line of the second planetary shaft hole 4, so that the hole center of the second planetary shaft hole 4 is positioned, and then the insertion rod 32 approaches the positioning groove 39 of the first hole center positioning rod 5. At this time, if the insert rod 32 can be smoothly inserted into the positioning groove 39, it means that the hole center of the first planet shaft hole 3 and the hole center of the second planet shaft hole 4 are located on the same horizontal line; if the inserted link 32 cannot be inserted into the positioning groove 39, it means that the hole center of the first planet shaft hole 3 and the hole center of the second planet shaft hole 4 are not on the same horizontal line, thereby realizing the detection of the coaxiality of the first planet shaft hole 3 and the second planet shaft hole 4.
When the plunger 32 is inserted into the positioning groove 39, the plate 37 at the bottom of the scale 34 is pressed by the stopper plate 36, so that the top surface of the plate 37 is at the same level with the reference surface of the flange, and the third spring is compressed. At this time, the value of the distance between the hole center of the second planetary shaft hole 4 and the reference plane is the value of the distance from the second pointer 33 at the right end of the second hole center positioning rod 22 to the scale 34. And finally, taking the average value of the two numerical values as the distance value between the hole center of the planet shaft hole and the reference surface of the flange plate.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. An apparatus for detecting a distance between a hole center and a reference surface, characterized in that: the measuring device comprises a rack, a first hole center positioning rod used for positioning the central line of a first planet shaft hole and a measuring unit used for detecting the distance between a hole center and a reference surface, wherein a first cavity is arranged in the first hole center positioning rod, a first sealing plate is connected in the first cavity in a sliding and sealing mode, the first cavity is divided into a first hydraulic chamber and a first movable chamber by the first sealing plate, a first air cylinder is arranged in the first movable chamber, and the output end of the first air cylinder is fixedly connected with the first sealing plate; hydraulic oil is filled in the first hydraulic chamber, a plurality of first cylinders are uniformly arranged on the side part of the first hole center positioning rod, the first cylinders are communicated with the first hydraulic chamber, first pistons are connected in the first cylinders in a sliding and sealing mode, first air chambers are formed by the first pistons and the side parts, far away from the first hydraulic chamber, of the first cylinders, and first air outlet holes are formed in the first air chambers; a first extension rod is fixed on the end face, facing the first air chamber, of the first piston, and one end, far away from the first piston, of the first extension rod extends out of the first cylinder and can abut against the inner wall of the planet shaft hole;
the measuring unit comprises a movable opening arranged on the first hole center positioning rod and a sliding chute which is vertically arranged, a first pointer is fixed at a notch of the sliding chute and is positioned on a horizontal central line of the first hole center positioning rod; a top rod is connected in the sliding groove in a sliding mode, scale marks are arranged on the top rod, the top rod is located above the reference surface of the flange plate, a fixed rod is arranged at the top of the top rod, a first spring is arranged on the side portion of the top rod, and one end, far away from the top rod, of the first spring is fixed on a first hole center positioning rod; the movable port is communicated with the first movable chamber; an L-shaped connecting rod is fixed on the first sealing plate, and the top of the connecting rod extends out of the movable opening and is fixedly connected with a horizontally arranged rack; a rotating shaft is rotatably connected on the rack, a gear meshed with the rack is mounted on the rotating shaft, and a pressure rod is eccentrically hinged on the gear; a loop bar is fixed on the frame, the pressure bar is abutted against the loop bar, and one side of the pressure bar, which is far away from the gear, is abutted against the fixed bar.
2. The apparatus of claim 1, wherein the apparatus further comprises: the second hole center positioning rod is used for positioning the central line of a second planet shaft hole, a second cavity is arranged in the second hole center positioning rod, a second sealing plate and a third sealing plate are connected in the second cavity in a sliding and sealing mode, a second hydraulic chamber is formed between the second sealing plate and the third sealing plate, a second movable chamber is formed between the second sealing plate and the side portion of the second cavity, a second air cylinder is arranged in the second movable chamber, and the output end of the second air cylinder is fixedly connected with the second sealing plate; hydraulic oil is filled in the second hydraulic chamber, a plurality of second cylinder bodies are uniformly arranged on the side part of the second hole center positioning rod, and the diameter of each second cylinder body is smaller than that of the second cavity; the second cylinder is communicated with the second hydraulic chamber, a second piston is connected in the second cylinder in a sliding and sealing mode, a second air chamber is formed by the second piston and the side part, far away from the second hydraulic chamber, of the second cylinder, and a second air outlet hole is formed in the second air chamber; a second extension rod is fixed on the end face, facing the second air chamber, of the second piston, and one end, far away from the second piston, of the second extension rod extends out of the second cylinder and can abut against the inner wall of the second planet shaft hole; a through hole is formed in one end, close to the first hole center positioning rod, of the second hole center positioning rod, the through hole is communicated with the second cavity, an inserting rod is connected in the through hole in a sliding mode and fixed on the third sealing plate, a positioning groove is formed in the end portion of the first hole center positioning rod, and the inserting rod is matched with the positioning groove; and a second spring is fixed on one side of the third sealing plate close to the through hole, and one end of the second spring, which is far away from the third sealing plate, is fixed on the inner wall of the second cavity.
3. The apparatus of claim 2, wherein the apparatus further comprises: one end of the second hole center positioning rod is provided with a second pointer, the second pointer is positioned on the horizontal center line of the second hole center positioning rod, one side of the rack, which is close to the second planetary shaft hole, is vertically provided with a guide rail, a graduated scale is connected in the guide rail in a sliding manner, and the graduated scale is in contact with the second pointer; the bottom of the graduated scale is horizontally provided with a flat plate, and the top surface of the flat plate is the initial position of the graduation; a limiting plate used for enabling the top surface of the flat plate and the reference surface of the flange plate to be positioned on the same horizontal line is fixed on the rack; the bottom of the flat plate is fixedly connected with a third spring, and the bottom of the third spring is fixed on the rack.
4. A device for detecting the distance between the hole center and the reference surface according to claim 3, wherein: the part of the second hole center positioning rod provided with the second pointer is detachably connected with a protective sleeve.
5. The apparatus of claim 2, wherein the apparatus further comprises: the switch is installed to the tank bottom department of constant head tank, and the switch electricity is connected with bee calling organ, and bee calling organ installs in first hole heart locating lever.
6. The apparatus of claim 1, wherein the apparatus further comprises: a supporting rod is fixed on one side, close to the first planetary shaft hole, of the rack, and the top surface of the supporting rod can abut against the first hole center positioning rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811058322.6A CN108871156B (en) | 2018-09-11 | 2018-09-11 | Device for detecting distance between hole center and reference surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058322.6A CN108871156B (en) | 2018-09-11 | 2018-09-11 | Device for detecting distance between hole center and reference surface |
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| CN108871156A CN108871156A (en) | 2018-11-23 |
| CN108871156B true CN108871156B (en) | 2020-03-20 |
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| CN102353310A (en) * | 2011-07-19 | 2012-02-15 | 大连液压件有限公司 | Integrated testing fixture for positions and angles of spool valve hole of commutation outlet seat and commutation holes |
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| Publication number | Publication date |
|---|---|
| CN108871156A (en) | 2018-11-23 |
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