CN218271200U - Calibration device for mechanical instrument measurement - Google Patents

Abstract

The utility model discloses a calibrating device for mechanical instrument measurement, including device body and movable sleeve, the movable sleeve has been cup jointed at the top of device body, the link is installed on the top of movable sleeve, the fixed hook is installed to the bottom of movable sleeve, the bottom fixedly connected with mount of fixed hook, the inside top fixedly connected with tension spring of mount, tension spring's bottom welding has the fixed block, the bottom fixedly connected with screw rod of fixed block, the pointer piece has been cup jointed to the outside of screw rod. This a calibrating device for mechanical instrument measurement is through being provided with calibration nut, screw rod, pointer piece, calibration spring, under the non-year thing state, upwards twists calibration nut and moves, promotes the pointer piece through calibration nut and moves upward, and calibration spring is compressed, makes the directional zero reference line of index of pointer piece both sides under the natural condition, can accomplish the calibration fast, has solved the problem that the structure is complicated, the inconvenient operation.

Description

Calibration device for mechanical instrument measurement

Technical Field

The utility model relates to a mechanics technical field specifically is a calibrating device for mechanical instrument measurement.

Background

The spring tension scale is the most common tension instrument in a mechanics laboratory, is used for measuring the mass of a small-mass article, and can obtain the weight corresponding to the scales through the conversion between the elastic force of the spring and the stretched length of the spring. However, with the increase of the use time and times, the tension spring is inevitably worn under the conditions of continuous loading and resetting, after the elastic force of the spring is damaged, the index also falls downwards under the condition of no loading, so that the index cannot point to the zero-degree datum line, and at the moment, calibration work needs to be carried out.

Present patent publication CN212807110U provides a calibrating device for mechanical instrument measurement, including casing and extension spring, the inside of casing slides respectively and pegs graft and has first supporting shoe and second supporting shoe, extension spring's one end and the bottom fixed connection of first supporting shoe, and the other end and second supporting shoe fixed connection, the inside first recess of having seted up of second supporting shoe, the inside rotation of first recess is connected with two sets of fasteners, and is two sets of it has the couple to slide between the fastener to peg graft, the screw hole has been seted up at the top of casing, screw hole female connection has the calibration screw, calibration screw and first supporting shoe swivelling joint, the casing top is provided with the end cover. The utility model discloses a can avoid power for the calibration screw in the calibrating device when measuring appear not hard up the error of weighing that brings, and swiftly convenient at the zero setting process, protect the dynamometry spring not receive the damage simultaneously, to a certain extent has prolonged life.

However, the clamping piece and the clamping assembly adopted in the technical scheme have small sizes and complex structures, the protection structure is very easy to fail due to friction loss in actual work, and once the protection structure is damaged, the maintenance is very inconvenient, and even the normal metering work is influenced. Therefore, the calibration device for mechanical instrument measurement is simple in structure and convenient to operate, and can complete calibration work quickly.

Disclosure of Invention

An object of the utility model is to provide a calibrating device for mechanical instrument measurement to propose the problem that the structure is complicated, inconvenient operation in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a calibrating device for mechanical instrument measurement, includes device body and movable sleeve, the movable sleeve has been cup jointed at the top of device body, the link is installed on the top of movable sleeve, the fixed hook is installed to the bottom of movable sleeve, the bottom fixedly connected with mount of fixed hook, the inside top fixedly connected with tension spring of mount, tension spring's bottom welding has the fixed block, the bottom fixedly connected with screw rod of fixed block, pointer piece has been cup jointed to the outside of screw rod, the both sides of pointer piece all are provided with the index.

Preferably, the bottom of the screw rod is sleeved with a calibration nut through threads, the calibration nut is abutted to the bottom end of the pointer piece, and a limit nut is arranged at the bottom end of the calibration nut.

Preferably, a calibration spring is sleeved outside the screw, the top end of the calibration spring is abutted against the fixed block, and the bottom end of the calibration spring is abutted against the pointer piece.

Preferably, the bottom fixedly connected with pull rod of pointer piece, the hook of weighing is installed to the bottom of pull rod, the both sides of device body all are provided with the scale, the directional scale of index level.

Preferably, the spout has all been seted up to the both sides of mount inner wall, the inside movable rod that has inlayed of spout, movable rod internally mounted has the sliding bead, the movable rod passes through the sliding bead and constitutes roll connection with the mount.

Preferably, the shell body is installed at the rear end of the device body, a reserved groove is formed between the shell body and the device body, and the index moves in the reserved groove.

Compared with the prior art, the beneficial effects of the utility model are that: the calibrating device for the mechanical instrument metering not only realizes the quick completion of calibration, is simple and convenient to operate, realizes the protection of parts, avoids the loosening and the loss of the nut, but also realizes the reduction of friction, quick zero resetting and accurate indication;

(1) The calibration nut, the screw rod, the pointer sheet and the calibration spring are arranged, the calibration nut is screwed upwards in a non-loading state, the pointer sheet is pushed to move upwards through the calibration nut, the calibration spring is compressed, indexes on two sides of the pointer sheet in a natural state point to a zero reference line, and therefore calibration can be completed quickly, operation is convenient, the operation is clear, and the structure is simple;

(2) The limiting nut and the screw rod are arranged, the limiting nut is further arranged at the bottom end of the calibration nut, the limiting nut is a small distance away from the calibration nut, the calibration nut is prevented from falling off after being loosened, the calibration nut is prevented from being lost, and the function of part protection is achieved;

(3) Through being provided with smooth pearl, mount, movable rod, the hard friction of smooth pearl with mount and movable rod turns into rolling friction to pulling force does not receive sliding friction's influence when guaranteeing to carry the thing in the at utmost, thereby makes the index reset more smoothly fast and returns to zero, instructs more accurately.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic view of a front view structure of the calibration spring of the present invention;

fig. 3 is an enlarged partial sectional view of the utility model at a in fig. 1;

fig. 4 is a schematic side view of the movable rod of the present invention.

In the figure: 1. hanging a ring; 2. a device body; 3. a fixed mount; 4. indexes; 5. a pull rod; 6. a weighing hook; 7. an outer housing; 8. calibration; 9. a pointer sheet; 10. a fixed block; 11. a tension spring; 12. reserving a groove; 13. a fixed hook; 14. a movable sleeve; 15. a chute; 16. a movable rod; 17. calibrating the spring; 18. a screw; 19. a limit nut; 20. calibrating the nut; 21. and (4) sliding the beads.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-4, a calibration device for mechanical instrument measurement comprises a device body 2 and a movable sleeve 14, wherein the movable sleeve 14 is sleeved on the top of the device body 2, a hanging ring 1 is installed on the top end of the movable sleeve 14, a fixed hook 13 is installed on the bottom end of the movable sleeve 14, a fixed frame 3 is fixedly connected to the bottom end of the fixed hook 13, a tension spring 11 is fixedly connected to the top end inside the fixed frame 3, a fixed block 10 is welded to the bottom end of the tension spring 11, a screw rod 18 is fixedly connected to the bottom end of the fixed block 10, a pointer sheet 9 is sleeved outside the screw rod 18, and indexes 4 are arranged on two sides of the pointer sheet 9;

a calibration spring 17 is sleeved outside the screw 18, the top end of the calibration spring 17 abuts against the fixed block 10, the bottom end of the calibration spring 17 abuts against the pointer sheet 9, the outer shell 7 is mounted at the rear end of the device body 2, a reserved groove 12 is formed between the outer shell 7 and the device body 2, and the index 4 moves in the reserved groove 12;

specifically, as shown in fig. 1, 2 and 3, during calibration, in a state of no object carrying, the calibration nut 20 is screwed upwards, the pointer sheet 9 is pushed to move upwards through the calibration nut 20, the pointer sheet 9 pushes the calibration spring 17 to compress the calibration spring, so that the indexes 4 on two sides of the pointer sheet 9 in a natural state point to a zero reference line, calibration is completed, and thus the calibration can be completed quickly, and the device body 2 aims at the rear end to be provided with the outer shell 7 as a shielding part, so that the calibration operation is directly performed.

Example 2: the bottom of the screw rod 18 is sleeved with a calibration nut 20 through threads, the calibration nut 20 is abutted against the bottom end of the pointer sheet 9, and the bottom end of the calibration nut 20 is provided with a limit nut 19;

specifically, as shown in fig. 1, fig. 2 and fig. 3, calibration nut 20 bottom still is provided with stop nut 19, and two sets of nuts all cup joint at screw rod 18 outsidely through the screw thread, and tightly butt pointer piece 9 after the calibration of calibration nut 20, and stop nut 19 then has a short distance apart from calibration nut 20, mainly plays the effect that drops after preventing calibration nut 20 pine to take off, avoids calibration nut 20 to lose, has the function of part protection.

Example 3: the bottom end of the pointer piece 9 is fixedly connected with a pull rod 5, the bottom end of the pull rod 5 is provided with a weighing hook 6, two sides of the device body 2 are provided with scales 8, the index 4 points to the scales 8 horizontally, two sides of the inner wall of the fixed frame 3 are provided with sliding grooves 15, movable rods 16 are embedded in the sliding grooves 15, sliding balls 21 are installed in the movable rods 16, and the movable rods 16 are in rolling connection with the fixed frame 3 through the sliding balls 21;

specifically, as shown in fig. 1, fig. 2 and fig. 4, no matter be calibration operation or daily weighing and metering, carry under the thing state, pull rod 5 can be with pointer piece 9 pulling downwards, and movable rod 16 inlays at the 3 inside wall gliding of mount this moment, through setting up smooth ball 21, turns into rolling friction with the rigid friction of mount 3 with movable rod 16 to pulling force does not receive sliding friction's influence when guaranteeing to carry the thing in the at utmost, thereby makes index 4 reset more smoothly and return to zero fast, instructs more accurately.

The working principle is as follows: the utility model discloses when using, handheld link 1, make the device be in under the thing state of not carrying, tension spring 11 is in the natural contraction state this moment, index 4 is below zero degree benchmark scale 8 because tension spring 11's loss is located this moment, slowly upwards twist the movement with calibration nut 20, promote pointer piece 9 through calibration nut 20 and move upwards, pointer piece 9 promotes calibration spring 17 with its compression, the directional zero datum line of index 4 of pointer piece 9 both sides under the messenger natural state, accomplish the calibration, calibration nut 20 bottom still is provided with stop nut 19, two sets of nuts all cup joint at screw rod 18 outsidely through the screw thread, tight butt pointer piece 9 after calibration of calibration nut 20, stop nut 19 then has a segment distance apart from calibration nut 20, prevent that calibration nut 20 from loosening and taking off.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A calibrating device for mechanical instrument measurement, including device body (2) and movable sleeve (14), characterized in that: the top of device body (2) has cup jointed movable sleeve (14), link (1) is installed on the top of movable sleeve (14), fixed hook (13) are installed to the bottom of movable sleeve (14), the bottom fixedly connected with mount (3) of fixed hook (13), the inside top fixedly connected with tension spring (11) of mount (3), the bottom welding of tension spring (11) has fixed block (10), the bottom fixedly connected with screw rod (18) of fixed block (10), pointer piece (9) have been cup jointed to the outside of screw rod (18), the both sides of pointer piece (9) all are provided with index (4).

2. A calibration device for mechanical instrumentation according to claim 1, wherein: the bottom of the screw rod (18) is sleeved with a calibration nut (20) through threads, the calibration nut (20) is abutted to the bottom end of the pointer sheet (9), and the bottom end of the calibration nut (20) is provided with a limiting nut (19).

3. A calibration device for mechanical instrumentation according to claim 1, wherein: the outer portion of the screw rod (18) is sleeved with a calibration spring (17), the top end of the calibration spring (17) is abutted to the fixed block (10), and the bottom end of the calibration spring (17) is abutted to the pointer piece (9).

4. A calibration device for mechanical instrumentation according to claim 1, wherein: the bottom fixedly connected with pull rod (5) of pointer piece (9), hook (6) of weighing is installed to the bottom of pull rod (5), the both sides of device body (2) all are provided with scale (8), index (4) horizontal directional scale (8).

5. A calibration device for mechanical instrumentation according to claim 1, wherein: spout (15) have all been seted up to the both sides of mount (3) inner wall, spout (15) inside has inlayed movable rod (16), movable rod (16) internally mounted has smooth pearl (21), movable rod (16) constitute roll connection through smooth pearl (21) and mount (3).

6. A calibration device for mechanical instrumentation according to claim 1, wherein: the device is characterized in that an outer shell (7) is installed at the rear end of the device body (2), a reserved groove (12) is formed between the outer shell (7) and the device body (2), and the index (4) moves in the reserved groove (12).

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