CN216620907U

CN216620907U - Length measuring instrument capable of reducing distinguishing errors

Info

Publication number: CN216620907U
Application number: CN202122477732.8U
Authority: CN
Inventors: 陆君
Original assignee: Individual
Current assignee: Chengdu Changyuan Technology Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-05-27
Anticipated expiration: 2031-10-14

Abstract

The utility model discloses a length measuring instrument for reducing distinguishing errors, which comprises a fixed groove, wherein two object positioning rods are arranged in the inner cavity of the fixed groove close to the top part and are arranged on the left and right sides, a lifting mechanism is arranged, a telescopic indicating rod is conveniently driven to move downwards to carry out positioning measurement on a to-be-measured fixed rod through the mutual matching among a reciprocating screw rod, a moving frame, a side plate, a fixed plate, a driving motor, a connecting block and a limiting block, then the measuring data is obtained through the mutual matching of the parts and a scale mark, and the distinguishing errors of the measured values can be reduced at the same time, the length measuring instrument is convenient for clamping and fixing the to-be-measured object through the mutual matching among a rectangular block, a moving rod, a cross rod, a connecting plate, a spring, a movable gear, a hand wheel, a clamping rack plate, a worm wheel, a connecting rod and a bearing plate, thereby improving the accuracy of the measurement.

Description

Length measuring instrument capable of reducing distinguishing errors

Technical Field

The utility model relates to the technical field of length measuring instruments, in particular to a length measuring instrument capable of reducing distinguishing errors.

Background

The length measuring instrument is an optical measuring instrument which can be used for carrying out precision measurement on a workpiece by using a direct comparison measuring method and a differential comparison measuring method, and is called an Abbe length measuring instrument because the instrument structure conforms to the Abbe principle, and can be divided into a vertical length measuring instrument and a horizontal length measuring instrument according to the difference of the arrangement directions of measuring axes, so that the length measuring instrument gradually reduces the distinguishing error, and is born.

Because the traditional length measuring instrument that reduces the differentiation error, at the in-process that uses, it is fixed to be not convenient for carry out the centre gripping to the object that awaits measuring to stability is not high when leading to measuring, and traditional device does not have the mechanism that can adjust the position of flexible pilot lever simultaneously, thereby leads to the practicality of device poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a length measuring instrument capable of reducing distinguishing errors.

One of the purposes of the utility model is realized by adopting the following technical scheme:

a length measuring instrument for reducing distinguishing errors comprises a fixing groove, wherein two object positioning rods are arranged in the position, close to the top, of an inner cavity of the fixing groove, the two object positioning rods are arranged in a left-right mode, first openings are formed in the opposite sides of the two object positioning rods, telescopic indicating rods are inserted into the inner cavities of the two first openings, moving blocks are fixedly connected to the positions, close to the opposite sides of the top and the bottom, of the two telescopic indicating rods, first sliding blocks are fixedly connected to the opposite sides of the two moving blocks, first sliding grooves are formed in the positions, close to the top and the bottom, of the inner cavities of the two object positioning rods, the two first sliding blocks are movably connected to the inner cavities of the adjacent first sliding grooves respectively, a rectangular opening is formed in the middle position of the top of the fixing groove, a rectangular frame is fixedly connected to the middle position of the bottom of the inner cavity of the fixing groove, and rectangular openings are formed in the positions, close to the top, of the left side and the right side of the rectangular frame, just equal fixedly connected with scale in the left and right sides department of rectangle mouth, two the inner chamber of adjacent rectangle mouth is passed respectively to the relative one end of flexible pilot lever to extend to the inner chamber of rectangle frame, the inner chamber bottom department of rectangle frame is equipped with fixture, just the left and right sides department of rectangle frame all is equipped with elevating system, the bottom fixedly connected with base of fixed slot.

Further, elevating system includes the curb plate, curb plate fixed connection is close to left side department at the fixed slot top, curb plate right side top fixedly connected with fixed plate of department, the bottom fixedly connected with driving motor of fixed plate, driving motor's output shaft fixedly connected with transfer line, the fixed slot top is close to the first bearing of left side department fixedly connected with the bottom, adjacent first bearing is run through to the bottom of transfer line to the reciprocal lead screw of fixedly connected with, just the inner chamber at adjacent first bearing is pegged graft to the bottom of reciprocal lead screw.

Further, the outside of reciprocal lead screw is close to top department and is equipped with the removal frame, the inner chamber front side department swing joint that removes the frame has even axle, just the rear end fixedly connected with stopper of even axle, stopper swing joint is in the outside department of reciprocal lead screw, the right side and the left object locating lever fixed connection of removing the frame, the left side fixedly connected with connecting block of removing the frame, the left side fixedly connected with second slider of connecting block, the second spout has been seted up to fixed slot inner chamber left side department, second slider swing joint is at the inner chamber of second spout.

Further, fixture includes the bearing plate, bearing plate fixed connection is close to intermediate position department at the base inner chamber, bearing plate top intermediate position department is equipped with the connection piece, the bottom fixedly connected with movable rod of connection piece, bearing plate top intermediate position department fixedly connected with second bearing, the inner chamber of second bearing is run through to the bottom of movable rod to extend to the outside of bearing plate, the outside of movable rod is close to bottom department cover and is equipped with the worm wheel, the right side meshing of worm wheel has the worm, the rear side of base is close to bottom fixedly connected with third bearing, the inner chamber of third bearing is run through to the rear end of worm to the hand wheel of fixedly connected with.

Further, the outside of worm is close to rear end department cover and is equipped with loose gear, loose gear's top meshing has the screens rack board, the rear side of base is close to bottom fixedly connected with connecting plate, seted up the perforation on the connecting plate, the fenestrate inner chamber runs through and is equipped with the bolt, the bottom and the screens rack board fixed connection of bolt, just the outside cover of bolt is equipped with the spring, the upper and lower both ends of spring respectively with bolt and connecting plate fixed connection.

Further, both sides department all articulates there is the connecting rod around being close to of connection piece, two the equal swing joint of one end that the connection piece was kept away from to the connecting rod has the rectangular block, two the equal fixedly connected with carriage release lever in top of rectangular block, both sides department has all seted up the second opening around the base top is close to, the third opening has all been seted up near front side both sides department to fixed slot bottom intermediate position, two adjacent second opening and third open-ended inner chamber are passed respectively to the top of carriage release lever to extend to the inner chamber of fixed slot, two the equal fixedly connected with horizontal pole of top department is close to one side that the carriage release lever is relative, two the equal fixedly connected with splint of one end that the horizontal pole is relative.

Furthermore, the bottom of the rectangular block is fixedly connected with a third sliding block, third sliding grooves matched with the third sliding blocks are formed in the positions, close to the front side and the rear side, of the top of the bearing plate, and the third sliding blocks are movably connected to inner cavities of the adjacent third sliding grooves respectively.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, by arranging the lifting mechanism, the reciprocating screw rod, the moving frame, the side plate, the fixed plate, the driving motor, the connecting block and the limiting block are matched with each other, so that the telescopic indicating rod is conveniently driven to move downwards to carry out positioning measurement on a to-be-measured fixed object, and then the telescopic indicating rod is matched with the scale marks to obtain measurement data, and meanwhile, the distinguishing error of the measurement values can be reduced;

2. according to the utility model, by arranging the clamping mechanism, the rectangular block, the moving rod, the cross rod, the connecting sheet, the clamping plate, the spring, the movable gear, the hand-operated wheel, the clamping rack plate, the worm wheel, the connecting rod and the bearing plate are matched with each other, so that an object to be detected is clamped and fixed conveniently, and the accuracy of measurement is improved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a front sectional view of the present embodiment;

FIG. 2 is a partial sectional view of the screw according to the present embodiment;

FIG. 3 is a partial right side view of the base of the present embodiment;

FIG. 4 is a partial top sectional view of the base of the present embodiment;

fig. 5 is a partial right side view of the rectangular frame of the present embodiment.

In the figure: 1. a base; 2. fixing grooves; 3. a lifting mechanism; 30. a reciprocating screw rod; 31. moving the frame; 32. a side plate; 33. a fixing plate; 34. a drive motor; 35. connecting blocks; 36. a limiting block; 4. an object positioning rod; 5. a telescopic indication rod; 6. a rectangular frame; 7. a clamping mechanism; 70. a rectangular block; 71. a travel bar; 72. a cross bar; 73. connecting sheets; 74. a splint; 75. a spring; 76. a movable gear; 77. a hand-operated wheel; 78. a clamping rack plate; 79. a worm; 790. a worm gear; 791. a connecting rod; 792. a bearing plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, a length measuring instrument for reducing differentiation errors comprises a fixed groove 2, two object positioning rods 4 are arranged in the inner cavity of the fixed groove 2 near the top, the two object positioning rods 4 are arranged in the left and right directions, first openings are arranged on the opposite sides of the two object positioning rods 4, telescopic indicating rods 5 are inserted into the inner cavities of the two first openings, moving blocks are fixedly connected to the opposite sides of the tops and the bottoms of the two telescopic indicating rods 5 near the opposite sides, first sliding blocks are fixedly connected to the opposite sides of the two moving blocks, first sliding grooves are arranged at the tops and the bottoms of the inner cavities of the two object positioning rods 4, the two first sliding blocks are respectively and movably connected to the inner cavities of the adjacent first sliding grooves, a rectangular opening is arranged at the middle position of the top of the fixed groove 2, a rectangular frame 6 is fixedly connected to the middle position of the bottom of the inner cavity of the fixed groove 2, and rectangular openings are arranged at the left and right sides of the rectangular frame 6 near the top, the left side and the right side of each rectangular opening are fixedly connected with a graduated scale, one ends, opposite to each other, of the two telescopic indicating rods 5 penetrate through the inner cavities of the adjacent rectangular openings respectively and extend to the inner cavity of the rectangular frame 6, the bottom of the inner cavity of the rectangular frame 6 is provided with a clamping mechanism 7, the left side and the right side of the rectangular frame 6 are provided with lifting mechanisms 3, and the bottom of the fixed groove 2 is fixedly connected with the base 1;

the lifting mechanism 3 comprises a side plate 32, the side plate 32 is fixedly connected to the top of the fixed groove 2 near the left side, the top of the right side of the side plate 32 is fixedly connected with a fixed plate 33, the bottom of the fixed plate 33 is fixedly connected with a driving motor 34, an output shaft of the driving motor 34 is fixedly connected with a transmission rod, the top and the bottom of the fixed groove 2 near the left side are fixedly connected with first bearings, the bottom end of the transmission rod penetrates through the adjacent first bearings and is fixedly connected with a reciprocating screw rod 30, the outer side of the reciprocating screw rod 30 near the top end is provided with a movable frame 31, the front side of an inner cavity of the movable frame 31 is movably connected with a connecting shaft, the rear end of the connecting shaft is fixedly connected with a limiting block 36, the limiting block 36 is movably connected to the outer side of the reciprocating screw rod 30, the right side of the movable frame 31 is fixedly connected with a left object positioning rod 4, the left side of the movable frame 31 is fixedly connected with a connecting block 35, and the left side of the connecting block 35 is fixedly connected with a second sliding block, a second sliding groove is formed in the left side of the inner cavity of the fixed groove 2, a second sliding block is movably connected to the inner cavity of the second sliding groove, so that the movable frame 31 is limited conveniently, the bottom end of the reciprocating screw rod 30 is inserted into the inner cavity of the adjacent first bearing, the position of the telescopic indicating rod 5 is adjusted conveniently, and therefore a detection object can be detected conveniently;

the clamping mechanism 7 comprises a bearing plate 792, the bearing plate 792 is fixedly connected to the inner cavity of the base 1 near the middle position, a connecting sheet 73 is arranged at the middle position of the top of the bearing plate 792, connecting rods 791 are hinged to the front side and the rear side of the connecting sheet 73, one ends of the two connecting rods 791 far away from the connecting sheet 73 are movably connected with rectangular blocks 70, the bottoms of the two rectangular blocks 70 are fixedly connected with third sliding blocks, third sliding grooves matched with the third sliding blocks are formed in the positions of the top of the bearing plate 792 near the front side and the rear side, the two third sliding blocks are respectively and movably connected with the inner cavities of the adjacent third sliding grooves so as to limit the rectangular blocks 70, moving rods 71 are respectively and fixedly connected to the tops of the two rectangular blocks 70, second openings are formed in the positions of the top of the base 1 near the front side and the rear side, third openings are formed in the positions of the middle position of the bottom of the fixed groove 2 near the front side, and the tops of the two moving rods 71 respectively pass through the inner cavities of the adjacent second openings and the third openings, the movable rod 71 is fixedly connected with a cross rod 72 at one side close to the top end, the opposite ends of the two cross rods 72 are fixedly connected with clamping plates 74, the bottom of a connecting plate 73 is fixedly connected with a movable rod, a second bearing is fixedly connected with the middle position of the top of a bearing plate 792, the bottom end of the movable rod penetrates through the inner cavity of the second bearing and extends to the outer side of the bearing plate 792, a worm wheel 790 is sleeved at the position, close to the bottom end, of the outer side of the movable rod, a worm 79 is meshed at the right side of the worm wheel 790, a movable gear 76 is sleeved at the position, close to the rear end, of the outer side of the worm 79, a clamping rack plate 78 is meshed at the top of the movable gear 76, a connecting plate is fixedly connected with the rear side of the base 1, a through hole is formed in the connecting plate, a bolt penetrates through the inner cavity of the through hole, the bottom end of the bolt is fixedly connected with the clamping rack plate 78, and a spring 75 is sleeved at the outer side of the bolt, spring 75's upper and lower both ends respectively with bolt and connecting plate fixed connection, are convenient for hand rocking wheel 77 to it rotates to avoid unexpected messenger's it to appear, and the rear side of base 1 is close to bottom fixedly connected with third bearing, and the inner chamber of third bearing is run through to the rear end of worm 79, and fixedly connected with hand rocking wheel 77, and it is fixed to be convenient for carry out the centre gripping to the object of treating the detection, thereby improves the stability when measuring.

The working principle is as follows: firstly, in the using process, an object to be detected is placed into an inner cavity of the rectangular frame 6 through the rectangular opening, after the placement is completed, the bolt is pulled upwards, the bolt is moved upwards through the extension of the spring 75, so that the clamping rack plate 78 is driven to move upwards and is not meshed with the movable gear 76, then the hand wheel 77 is rotated, the worm 79 is driven to rotate by rotating the hand wheel 77, the worm 790 is driven to rotate by rotating the worm, the worm 790 is driven to rotate and is meshed with the worm, the movable rod is driven to rotate by rotating the worm gear 790, the connecting plate 73 is driven to rotate by rotating the movable rod, the connecting plate 73 is driven to rotate by rotating the adjacent rectangular blocks 70 through the two connecting rods 791, the two rectangular blocks 70 move relatively under the limit of the third sliding block and the third sliding groove, the two rectangular blocks 70 move relatively, the moving rods 71 and the transverse rods 72 drive the adjacent clamping plates 74 to move relatively to clamp and fix the object, when the clamping is fixed, the hand wheel 77 stops rotating, and the pulled bolt is released, so that the clamping rack plate 78 moves downwards under the action of the elastic force of the spring 75 to be continuously engaged with the movable gear 76, thereby avoiding the accidental rotation of the hand-operated wheel 77, when the bolt is pulled upwards and the hand-operated wheel 77 is rotated reversely, the clamping on the object can be released, then the two driving motors 34 are started through the external power supply, when the driving motors 34 work, the output shafts of the driving motors drive the transmission rods to rotate, the transmission rods rotate to drive the reciprocating screw rods 30 to rotate, the reciprocating screw rods 30 rotate to drive the moving frame 31 to move downwards under the limiting of the connecting blocks 35, the second sliding blocks and the second sliding grooves through the limiting blocks 36, thereby driving the object positioning rods 4 and the telescopic indicating rods 5 to move downwards, when the two telescopic indicating rods 5 are attached to the top of the object to be detected, the two driving motors 34 stop operating, and then the length of the object to be detected can be visually observed through the scale rulers at the two sides of the rectangular frame 6, and then the average value of the two measured values is taken, so that the length of the object to be measured can be obtained, the operation is simple, the length of the object can be conveniently measured, and meanwhile, the distinguishing error of the measured values can be reduced.

The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.

Claims

1. The utility model provides a reduce length measuring instrument who distinguishes error, includes fixed slot (2), fixed slot (2) inner chamber is close to top department and is equipped with two object locating levers (4), and two object locating lever (4) are for controlling the setting, two first opening has all been seted up to one side that object locating lever (4) are relative, two flexible indicator lever (5) have all been pegged graft to first open-ended inner chamber, two the top and the bottom of flexible indicator lever (5) are close to the equal fixedly connected with movable block of opposite one side department, and two the equal fixedly connected with first slider in one side that the movable block is opposite, two first spout has all been seted up to object locating lever (4) inner chamber top and bottom department, two first slider swing joint is respectively at the inner chamber of adjacent first spout, its characterized in that: the utility model discloses a telescopic indicating rod, including fixed slot (2), fixed slot (2) top intermediate position department has seted up the rectangle opening, fixed slot (2) inner chamber bottom intermediate position department fixedly connected with rectangle frame (6), the left and right sides of rectangle frame (6) is close to top department and has all seted up the rectangle mouth, just the equal fixedly connected with scale in the left and right sides department of rectangle mouth, two the inner chamber of adjacent rectangle mouth is passed respectively to the relative one end of flexible indicating rod (5) to extend to the inner chamber of rectangle frame (6), the inner chamber bottom department of rectangle frame (6) is equipped with fixture (7), just the left and right sides department of rectangle frame (6) all is equipped with elevating system (3), the bottom fixedly connected with base (1) of fixed slot (2).

2. A length gauge for reducing discrimination errors as defined in claim 1, wherein: elevating system (3) include curb plate (32), curb plate (32) fixed connection is close to left side department at fixed slot (2) top, fixedly connected with fixed plate (33) of curb plate (32) right side top department, the bottom fixedly connected with driving motor (34) of fixed plate (33), the output shaft fixedly connected with transfer line of driving motor (34), fixed slot (2) top and bottom are close to the first bearing of left side fixedly connected with, the bottom of transfer line runs through adjacent first bearing to the reciprocal lead screw (30) of fixedly connected with, just the inner chamber at adjacent first bearing is pegged graft to the bottom of reciprocal lead screw (30).

3. A length gauge for reducing discrimination errors as defined in claim 2, wherein: the outside of reciprocal lead screw (30) is close to top department and is equipped with removal frame (31), the inner chamber front side department swing joint that removes frame (31) links the axle, just link the rear end fixedly connected with stopper (36) of axle, stopper (36) swing joint is in the outside department of reciprocal lead screw (30), the right side and left object locating lever (4) fixed connection of removal frame (31), the left side fixedly connected with connecting block (35) of removal frame (31), the left side fixedly connected with second slider of connecting block (35), fixed slot (2) inner chamber left side department has seted up the second spout, second slider swing joint is at the inner chamber of second spout.

4. A length gauge for reducing discrimination errors as defined in claim 1, wherein: fixture (7) are including bearing plate (792), bearing plate (792) fixed connection is close to intermediate position department at base (1) inner chamber, bearing plate (792) top intermediate position department is equipped with connection piece (73), the bottom fixedly connected with movable rod of connection piece (73), bearing plate (792) top intermediate position department fixedly connected with second bearing, the inner chamber of second bearing is run through to the bottom of movable rod to extend to the outside of bearing plate (792), the outside of movable rod is close to bottom department cover and is equipped with worm wheel (790), the right side meshing of worm wheel (790) has worm (79), the rear side of base (1) is close to bottom department fixedly connected with third bearing, the inner chamber of third bearing is run through to the rear end of worm (79) to hand rocking wheel (77) of fixedly connected with.

5. A length gauge with reduced discrimination error as claimed in claim 4, wherein: the outside of worm (79) is close to rear end department cover and is equipped with loose gear (76), the top meshing of loose gear (76) has screens rack plate (78), the rear side of base (1) is close to bottom department fixedly connected with connecting plate, the perforation has been seted up on the connecting plate, the fenestrate inner chamber runs through and is equipped with the bolt, the bottom and the screens rack plate (78) fixed connection of bolt, just the outside cover of bolt is equipped with spring (75), the upper and lower both ends of spring (75) respectively with bolt and connecting plate fixed connection.

6. A length gauge with reduced discrimination error as claimed in claim 4, wherein: the equal swing joint in both sides department all has connecting rod (791), two around being close to of connection piece (73) the equal swing joint in one end that connection piece (73) were kept away from in connecting rod (791) has rectangular block (70), two the equal fixedly connected with carriage release lever (71) in top of rectangular block (70), both sides department has all seted up the second opening around base (1) top is close to, fixed slot (2) bottom intermediate position is close to front side both sides department and has all seted up the third opening, two adjacent second opening and third open-ended inner chamber are passed respectively to the top of carriage release lever (71) to extend to the inner chamber of fixed slot (2), two the equal fixedly connected with horizontal pole (72) of top department, two in the relative one side of carriage release lever (71) the equal fixedly connected with splint (74) of one end relative of horizontal pole (72).

7. A length gauge for reducing discrimination errors as defined in claim 6, wherein: two the equal fixedly connected with third slider in bottom of rectangle piece (70), bearing plate (792) top is close to front and back both sides department all seted up with third slider assorted third spout, two third slider swing joint is the inner chamber of adjacent third spout respectively.