CN211205632U

CN211205632U - Metering calibration device for mechanical instrument

Info

Publication number: CN211205632U
Application number: CN202020061810.9U
Authority: CN
Inventors: 高欢迪; 高丽莎
Original assignee: Zhongheng Measurement Service Hainan Co ltd
Current assignee: Radio And Television Metrology And Testing Hainan Co ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-08-07
Anticipated expiration: 2030-01-13

Abstract

The utility model provides a measurement calibrating device for mechanical instrument, including the leading truck, supply the installation of spring balance main part and can be at the crane of this leading truck ascending and descending, be used for driving the lifting unit that this crane goes up and down and be used for driving the adjustment mechanism of this lifting unit action, the utility model discloses a pointer rack that the crane goes up and down to drive the spring balance main part reciprocates to it is rotatory with the fixed gear of pointer to drive through the pointer rack, realizes the purpose that the adjustment pointer returns to zero, in the adjustment pointer, the extension spring of weighing of spring balance main part does not receive the interference, does not take place to warp, does not influence the purpose of weighing. The utility model discloses a crane goes up and down through leading of leading truck crane, and the crane passes through rubber circle, rubber ring can fix a position at the optional position of crane at any time, guarantees the temperature shape of lift, ensures the measuring temperature shape, ensures the accuracy of returning to zero.

Description

Metering calibration device for mechanical instrument

Technical Field

The utility model relates to an instrument calibrating device more specifically indicates a measurement calibrating device for mechanical instrument.

Background

A spring scale, also called a spring dynamometer, is a device for measuring acting force by utilizing the direct proportion relationship between the deformation of a spring and external force. The spring balance is divided into two types of pressure and tension, the pressure borne by a tray of the pressure spring balance is equal to the gravity of an object, and the rotating angle of a scale tray pointer indicates the numerical value of the pressure borne by the scale tray. The lower end of the tension spring balance is connected with a hook (the hook is connected with the lower end of the spring), and the upper end of the spring is fixed on a ring on the top of the shell. The object to be measured is hung on the hook, the spring is extended, and the pointer fixed on the spring descends along with the extension. Since the spring elongation is proportional to the force applied within the elastic limit, the magnitude of the force or the weight of the object can be read directly from the scale value on the housing indicated by the pointer of the spring balance.

When the spring scale is used, the measured gravity or force does not exceed the measurement range of the spring scale, whether the pointer points to a zero scale when the spring scale is not hung with an object or not is checked, and if the pointer does not point to the zero scale, correction is carried out. However, the conventional calibration device has low calibration accuracy and needs to improve stability.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a measurement calibrating device for mechanical instrument, it is through unique structural design, and the lift through the crane drives the pointer rack and removes, realizes driving through the pointer rack and rotates with the fixed gear of pointer, realizes the purpose that the adjustment pointer returns to zero.

The utility model adopts the technical proposal that: a metering calibration device for a mechanical instrument comprises a guide frame, a lifting assembly and an adjusting mechanism, wherein the lifting frame is used for installing a spring balance main body and can ascend and descend on the guide frame, the lifting assembly is used for driving the lifting frame to ascend and descend, the adjusting mechanism is used for driving the lifting assembly to move, the guide frame comprises a left guide pipe and a right guide pipe parallel to the left guide pipe, the lifting frame comprises a first lifting rod transversely arranged between the left guide pipe and the right guide pipe, a second lifting rod parallel to the first lifting rod and a fixing plate connected between the first lifting rod and the second lifting rod, the lifting assembly comprises a left screw rod rotatably arranged in the left guide pipe, a right screw rod rotatably arranged in the right guide pipe, a first driven conical tooth fixed at the upper end of the left screw rod and a second driven conical tooth fixed at the upper end of the right screw rod, and the left screw rod is respectively connected with the first lifting rod, The left end spiro union of second lifter, this right screw rod respectively with the right-hand member spiro union of this first lifter, second lifter, this adjustment mechanism is including adjusting the horizontal pole, fix on this regulation horizontal pole and with the first initiative awl tooth of this first driven awl tooth meshing, fix on this regulation horizontal pole and with the second initiative awl tooth of this second driven awl tooth meshing and set up the adjust knob at this regulation horizontal pole tip.

The outside of this second initiative awl tooth is provided with and blocks a section of thick bamboo, and this adjust knob is provided with the card axle that stretches into this and block a section of thick bamboo inside and this regulation horizontal pole joint, and this card axle is provided with the cardboard, should adjust the horizontal pole and be provided with the draw-in groove that supplies the cardboard card to go into, and the outside of this card axle is provided with prevents that the card axle from breaking away from completely and blocks a fender ring of section of thick bamboo, should keep off and be provided with the spring between ring and this second initiative awl tooth.

The left guide pipe and the right guide pipe are oppositely provided with sliding chutes into which the first lifting rod and the second lifting rod extend.

The first lifting rod is provided with a rubber ring at a position corresponding to the sliding groove.

The second lifting rod is provided with a rubber ring at the position corresponding to the sliding groove.

The two ends of the first lifting rod are provided with rubber rings and rubber blocks which are in interference fit with the inner walls of the left guide pipe and the right guide pipe.

The utility model has the advantages that:

the utility model discloses an it is rotatory to adjust the horizontal pole and drive left screw rod, right screw rod to drive the crane and go up and down, go up and down through the crane and drive the pointer rack of spring balance main part and reciprocate, thereby it is rotatory with the fixed gear of pointer to drive through the pointer rack, realize the purpose that the adjustment pointer returns to zero, in the adjustment pointer, the extension spring of weighing of spring balance main part does not receive the interference, does not take place to warp, does not influence the purpose of weighing.

The utility model discloses a crane goes up and down through leading of leading truck crane, and the crane passes through rubber circle, rubber ring can fix a position at the optional position of crane at any time, guarantees the temperature shape of lift, ensures the measuring temperature shape, ensures the accuracy of returning to zero.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is a schematic view of the first lifting rod, the second lifting rod, the left guide tube and the right guide tube of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3, it is now right to the present invention to provide a metering calibration device for mechanical instrument, which includes a guiding frame 10, a lifting frame 20 for installing a spring balance main body 50 and lifting on the guiding frame 10, a lifting assembly 30 for driving the lifting frame 20 to lift, and an adjusting mechanism 40 for driving the lifting assembly 30 to move, wherein the guiding frame 10 includes a left guiding tube 11 and a right guiding tube 12 parallel to the left guiding tube 11, the lifting frame 20 includes a first lifting rod 21 transversely disposed between the left guiding tube 11 and the right guiding tube 12, a second lifting rod 22 parallel to the first lifting rod 21, and a fixing plate 23 connected between the first lifting rod 21 and the second lifting rod 22, the lifting assembly 30 includes a left screw rod 31 rotatably disposed inside the left guiding tube 11, a right screw rod 32 rotatably disposed inside the right guiding tube 12, a left screw rod 32, a right screw rod 32 disposed inside the right guiding tube 12, The first driven bevel gear 33 fixed on the upper end of the left screw 31 and the second driven bevel gear 34 fixed on the upper end of the right screw 32, the left screw 31 is screwed with the left ends of the first lifting rod 21 and the second lifting rod 22, the right screw 32 is screwed with the right ends of the first lifting rod 21 and the second lifting rod 22, the adjusting mechanism 40 comprises an adjusting cross rod 41, a first driving bevel gear 42 fixed on the adjusting cross rod 41 and meshed with the first driven bevel gear 33, a second driving bevel gear 43 fixed on the adjusting cross rod 41 and meshed with the second driven bevel gear 34, and an adjusting knob 44 arranged on the end of the adjusting cross rod 41.

The utility model discloses well spring balance main part is including adjusting compensating beam 51, the extension spring 52 of weighing, pointer rack 53, pointer seat 54 (fixed with the spring balance shell, the spring balance shell is not shown), pointer gear 55 (the back is provided with the pointer, the calibrated scale, the pointer, the calibrated scale is not shown), couple roof beam 56, reset spring 57, the regulation compensating beam 51 of this spring balance 50 main part is fixed on this first lifter 21, this couple roof beam 56 is fixed with this regulation compensating beam 51 through extension spring 52 of weighing, this couple roof beam 56 passes through reset spring and is connected with second lifter 22, this pointer rack 53 is fixed with this couple roof beam 56, the lift pulling pointer gear through the couple roof beam rotates, thereby the pointer that drives the spring balance rotates.

The outer side of the second driving bevel gear 43 is provided with a blocking cylinder 431, the adjusting knob 44 is provided with a clamping shaft 441 extending into the blocking cylinder 431 and clamped with the adjusting cross rod 41, the clamping shaft 441 is provided with a clamping plate 442, the adjusting cross rod 41 is provided with a clamping groove 411 for clamping the clamping plate 442, the outer side of the clamping shaft 441 is provided with a retaining ring 443 for preventing the clamping shaft 441 from completely separating from the blocking cylinder 431, a spring 444 is arranged between the retaining ring 443 and the second driving bevel gear 43, under the normal condition, under the elastic action of the spring, the clamping plate of the clamping shaft is not clamped into the clamping groove of the adjusting cross rod, when the adjusting cross rod needs to be rotated, the adjusting knob is pushed to promote the clamping plate to be clamped into the clamping groove, then the adjusting cross rod is promoted to rotate through rotating the adjusting knob shell, after the adjustment is completed, the clamping plate separates from the clamping groove, and.

The left guide tube 11 and the right guide tube 12 are oppositely provided with

chutes

111 and 121 into which the first lifting rod 21 and the second lifting rod 22 extend.

The first lifting rod 21 is provided with a rubber ring A at the position corresponding to the

sliding grooves

111 and 121, and the rubber ring is in interference fit with the sliding grooves, so that the friction force between the rubber ring and the sliding grooves is increased, the rubber ring is prevented from moving randomly under the condition of no external force, and the positioning stability is improved.

The second lifting rod 22 is provided with a rubber ring a at the position corresponding to the

sliding grooves

The two ends of the first lifting rod 21 are provided with a rubber ring B and a rubber block C which are in interference fit with the inner walls of the left guide pipe 11 and the right guide pipe 12, so that the positioning effect of the first lifting rod and the second lifting rod on the left guide pipe and the right guide pipe is increased.

The utility model discloses what realize is that it is rotatory to drive left screw rod, right screw rod through adjusting the horizontal pole to drive the crane and go up and down, go up and down through the crane and drive the pointer rack of spring balance main part and reciprocate, thereby it is rotatory with the fixed gear of pointer to drive through the pointer rack, realizes the purpose of adjustment pointer.

The embodiments and drawings of the present invention are only for illustrating the design concept of the present invention, and the protection scope of the present invention should not be limited to this embodiment.

From the above, it can be seen that the objects of the present invention are efficiently attained. The part of the embodiments that illustrate the objectives and the functional and structural objects of the invention, and include other equivalents.

Accordingly, the invention is intended to cover other equally effective embodiments, as the scope of the appended claims will refer to.

Claims

1. A measurement calibration device for a mechanical instrument, characterized in that: including leading truck, supply the installation of spring balance main part and can the leading truck go up and down the crane, be used for driving the lifting unit that the crane goes up and down and be used for the drive the adjustment mechanism of lifting unit action, the leading truck include left stand pipe and with the parallel right stand pipe of left side stand pipe, the crane includes transversely be in left side stand pipe with first lifter between the right side stand pipe, the second lifter parallel with first lifter and connect in fixed plate between first lifter, the second lifter, lifting unit includes rotatable setting in the inside left screw rod of left side stand pipe, rotatable setting are in the inside right screw rod of right side stand pipe, fix first driven awl tooth and fix in the upper end of left screw rod the driven awl tooth of right screw rod second, left side screw rod respectively with first lifter go up and down the elevating rod is fixed respectively, The left end spiro union of second lifter, right screw rod respectively with the right-hand member spiro union of first lifter, second lifter, adjustment mechanism is including adjusting the horizontal pole, fixing adjust on the horizontal pole and with first initiative awl tooth, the fixing of first driven awl tooth meshing are in adjust on the horizontal pole and with second initiative awl tooth and the setting of the driven awl tooth meshing of second are in adjust the adjust knob of horizontal pole tip.

2. The metering calibration device for the mechanical instrument as recited in claim 1, wherein a blocking cylinder is disposed outside the second driving bevel gear, the adjusting knob is provided with a clamping shaft extending into the blocking cylinder and clamped with the adjusting cross rod, the clamping shaft is provided with a clamping plate, the adjusting cross rod is provided with a clamping groove for the clamping plate to be clamped, a stop ring for preventing the clamping shaft from completely separating from the blocking cylinder is disposed outside the clamping shaft, and a spring is disposed between the stop ring and the second driving bevel gear.

3. The measurement calibration device for mechanical instrument as claimed in claim 2, wherein the left guide tube and the right guide tube are oppositely provided with sliding grooves into which the first lifting rod and the second lifting rod extend.

4. The measurement calibration device for mechanical instrument according to claim 3, wherein a rubber ring is disposed on the first lifting rod at a position corresponding to the sliding groove.

5. The metering calibration device for the mechanical instrument as recited in claim 4, wherein a rubber ring is disposed at a position of the second lifting rod corresponding to the sliding groove.

6. The metering and calibrating device for the mechanical instrument as claimed in claim 2, wherein the two ends of the first lifting rod are provided with rubber rings and rubber blocks which are in interference fit contact with the inner walls of the left guide tube and the right guide tube.