CN211856311U

CN211856311U - Forward static pressure calibration device for pendulum friction coefficient tester

Info

Publication number: CN211856311U
Application number: CN202020108402.4U
Authority: CN
Inventors: 蔡文革; 魏树杰
Original assignee: Fujian Huake Measurement And Testing Co ltd
Current assignee: Fujian Huake Measurement And Testing Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-11-03
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a positive static pressure calibrating device of a pendulum type friction coefficient tester, which comprises a base, a lifting column, an indicating mechanism, an indicating rod and a driving mechanism, wherein the lifting column is fixedly connected with the top of the base; indicating mechanism possesses fixed block, movable slot, recess, spread groove, pressurized groove, extrusion piece and extrusion groove, the utility model aims to provide a positive static pressure calibrating device of pendulum-type coefficient of friction apparatus to solve and propose among the above-mentioned background art, when the sheet rubber contacts ground, can receive the extrusion and cause the variant, thereby lead to survey crew to cause the condition of detection error, and the lift process of pendulum-type appearance is very fast, can not carry out the problem of finely tuning to the height of pendulum-type appearance.

Description

Forward static pressure calibration device for pendulum friction coefficient tester

Technical Field

The utility model relates to a circuit board encapsulation equipment, in particular to pendulum-type coefficient of friction apparatus forward static pressure calibrating device belongs to circuit board packaging technology field.

Background

With the development of transportation industry, the antiskid problem of roads, urban roads, airport runways and other roads has attracted the general attention of relevant departments. A pendulum-type friction coefficient measuring instrument (pendulum-type instrument for short) is an instrument for measuring the friction coefficient of road surface, airport runway, marking paint, etc. The measurement of the coefficient of friction of a typical road surface may also be used as one of the bases for determining a tire-protecting formulation.

Because the pendulum friction coefficient tester is convenient to debug. The pendulum instrument is easy to operate and is widely used, but the measurement precision needs to be debugged for many times in the using process, the requirement on the rubber sheet for the precision accuracy is high, the precision of the rubber sheet is strictly regulated, and the specification of the pendulum instrument rubber sheet is 76.2 mmx25.4mmx6.35mm. And the distance between two contact points of the rubber sheet and the road surface is strictly required to be 126 mm. If not conform to the rotatable lift handle of 126mm, repeat above-mentioned step again and carry out the coarse adjustment, but the sheet rubber has the ability of extrusion deformation, when the sheet rubber contacts ground, can receive the extrusion and cause the deformation to lead to the measuring staff to cause the condition of detection error, and the lift process of pendulum-type appearance is very fast, can not finely tune the height of pendulum-type appearance, can not be quick reach the purpose of debugging completion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a positive static pressure calibrating device of pendulum-type coefficient of friction apparatus to solve and propose in the above-mentioned background art, when the sheet rubber contacts ground, can receive the extrusion and cause the variant, thereby lead to the survey crew to cause the condition of detection error, and the lift process of pendulum-type appearance is very fast, can not highly carry out the problem of finely tuning to the pendulum-type appearance.

In order to achieve the above object, the utility model provides a following technical scheme: a positive static pressure calibration device of a pendulum type friction coefficient tester comprises a base, a lifting column, an indicating mechanism, an indicating rod and a driving mechanism, wherein the top of the base is fixedly connected with the lifting column, one side of the top of the lifting column is fixedly connected with a dial, the top of the lifting column is rotatably connected with a pendulum shaft and a pointer, the tail end of the pendulum shaft is fixedly connected with a pendulum bob, and one side of the pendulum bob is provided with the indicating mechanism; the indicating mechanism possesses fixed block, movable groove, recess, spread groove, pressurized groove, annular groove, pressurized button, extrusion piece and extrusion groove, movable groove has been seted up to the inside of fixed block, the inside activity in movable groove is pegged graft and is had the instruction pole, the recess has been seted up at the middle part in movable groove, the spread groove has been seted up to one side of fixed block inside, pressurized groove has been seted up to the bottom of spread groove, the inside activity in pressurized groove is pegged graft and is had pressurized button, the end that the spread groove is close to movable groove one side has seted up annular groove, two extrusion grooves have been seted up to the bottom in annular groove, the inside activity in extrusion groove is pegged graft and is had the extrusion piece.

As a preferred technical scheme of the utility model, the lift post possesses cylinder, dog, ejector pin, rotates connector, ball nut, first conical gear, ball, spout and actuating mechanism, the middle part fixedly connected with dog of cylinder inner wall, the ejector pin has been placed at the top of dog, the lower surface of ejector pin rotates and is connected with and rotates the connector, the bottom of rotating the connector is rotated and is connected with ball, ball's circumference outside dwang is connected with ball nut, ball nut's lower fixed surface is connected with first conical gear, one side of cylinder be provided with a conical gear assorted actuating mechanism.

As a preferred technical scheme of the utility model, actuating mechanism possesses dwang, second bevel gear and hexagon nut, one side fixedly connected with second bevel gear of dwang, the opposite side fixedly connected with hexagon nut of dwang.

As a preferred technical scheme of the utility model, the indicator arm possesses the body of rod, spring and fixed plate, the middle part fixedly connected with fixed plate of the body of rod, the spring has been cup jointed in the circumference outside of the body of rod, the lower surface of spring fixedly connected with fixed plate.

As a preferred technical scheme of the utility model, the circumference outside of ball nut is rotated and is connected with a plurality of ball nuts, seted up on the inner wall of cylinder with ball nut assorted spout.

As an optimal technical scheme of the utility model, eight are no less than to the quantity of ball nut.

Compared with the prior art, the beneficial effects of the utility model are that: when the utility model is used for debugging the rubber sheet on the pendulum, in the process of contacting the rubber sheet with the ground on two sides, in order to prevent the rubber sheet from being deformed due to compression and extrusion to cause inaccurate debugging, the indicating mechanism can be pressed to move downwards to enable the rod body to reach the position of the rubber sheet so as to draw the distance between the rubber sheet and the measuring instrument close to prevent the error caused by the observation at a distance by naked eyes and further influence the precision, and when the distance between the rubber sheet and the ground in frictional contact is less than 126mm or exceeds 126mm, the hexagonal nut can be rotated by the tool to rotate the rotating rod, and then the second bevel gear is controlled to drive the first bevel gear to rotate, and further the ball screw nut is driven to rotate, thereby driving the ball screw to move upwards or downwards to cause the ejector rod to move upwards or downwards, and further accurately controlling the distance between the rubber sheet and the ground, to more conveniently reach a debugging distance of 126 mm.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the pendulum of the present invention;

fig. 3 is a schematic structural diagram of the indicating mechanism of the present invention;

fig. 4 is a schematic structural view of the lifting column of the present invention;

fig. 5 is a schematic structural diagram of the driving mechanism of the present invention.

In the figure: 101-a base; 102-dial; 103-a pendulum shaft; 104-a pointer; 105-a pendulum bob; 200-lifting columns; 201-column; 202-a stop; 203-mandril; 204-a rotating connector; 205-ball screw; 206-ball screw nut; 207-a first bevel gear; 208-a ball bearing; 209-chute; 300-an indication mechanism; 301-fixing block; 302-an active slot; 303-grooves; 304-a connecting groove; 305-a pressurized tank; 306-ring groove; 307-pressed button; 308-extruding the block; 309-extrusion groove; 400-an indicator stem; 401-rod body; 402-a spring; 403-fixing plate; 500-a drive mechanism; 501-rotating rod; 502-second bevel gear; 503-hexagonal nut.

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.

Referring to fig. 1-5, the utility model provides a positive static pressure calibration device of pendulum type friction coefficient tester, including base 101, lifting column 200, indicating mechanism 300, indicator rod 400 and actuating mechanism 500, the top of base 101 is fixedly connected with lifting column 200, one side of the top of lifting column 200 is fixedly connected with scale 102, the top of lifting column 200 is rotatably connected with pendulum shaft 103 and pointer 104, the end of pendulum shaft 103 is fixedly connected with pendulum bob 105, one side of pendulum bob 105 is provided with indicating mechanism 300;

the lifting column 200 is used for lifting, the lifting column 200 is provided with a column 201, a stopper 202, a push rod 203, a rotary connector 204, a ball screw 205, a ball screw nut 206, a first bevel gear 207, balls 208, a chute 209 and a driving mechanism 500, the stopper 202 is fixedly connected to the middle of the inner wall of the column 201, the push rod 203 is placed at the top of the stopper 202, the lower surface of the push rod 203 is rotatably connected with the rotary connector 204, the bottom of the rotary connector 204 is rotatably connected with the ball screw 205, the ball screw nut 206 is rotatably connected to the outer circumferential side of the ball screw 205, the first bevel gear 207 is fixedly connected to the lower surface of the ball screw nut 206, and the driving mechanism 500 matched with the first bevel gear 207 is arranged on one side of the column 201;

in the above, the push rod 203 is used for being rotationally connected with the swing shaft 103 and the support 104, the stopper 202 is used for preventing the push rod 203 from moving beyond the position downwards, the rotational connector 204 is used for converting the rotational force into a direct force, the ball screw 205 is matched with the ball screw nut 206, the rotational force can be converted into the direct force, the push rod 203 can conveniently move up and down, the first bevel gear 207 is matched with the driving mechanism 500 for use, and when the driving mechanism 500 rotates, the first bevel gear 207 is driven to move, so that the ball screw nut 206 is driven to rotate, and the ball screw 205 is driven to move up or down;

further, the driving mechanism 500 includes a rotation lever 501, a second bevel gear 502, and a hexagonal nut 503, the second bevel gear 502 is fixedly connected to one side of the rotation lever 501, the hexagonal nut 503 is fixedly connected to the other side of the rotation lever 501, and the hexagonal nut 503 can be rotated by a tool.

Indicating mechanism 300 possesses fixed block 301, movable groove 302, recess 303, connecting groove 304, pressurized groove 305, annular groove 306, pressurized button 307, extrusion piece 308 and extrusion groove 309, movable groove 302 has been seted up to fixed block 301's inside, the inside activity of movable groove 302 is pegged graft and is had instruction pole 400, recess 303 has been seted up at the middle part of movable groove 302, connecting groove 304 has been seted up to fixed block 301 inside one side, pressurized groove 305 has been seted up to the bottom of connecting groove 304, pressurized groove 305's inside activity is pegged graft and is had pressurized button 307, annular groove 306 has been seted up to the tip that connecting groove 304 is close to movable groove 302 one side, two extrusion grooves 309 have been seted up to the bottom of annular groove 306, extrusion piece 308 has been pegged graft in the inside activity of extrusion.

Further, the indication rod 400 includes a rod 401, a spring 402 and a fixing plate 403, the fixing plate 403 is fixedly connected to the middle of the rod 401, the spring 402 is sleeved on the outer circumference of the rod 401, and the spring 402 is fixedly connected to the lower surface of the fixing plate 403

The fixed block 301 is used for providing an installation environment of parts inside the indicating mechanism 300, the movable groove 302 is used for facilitating up-and-down movement of the indicating rod 400, the groove 303 is used for facilitating up-and-down movement of the fixed plate 403, hydraulic media can be placed inside the connecting groove 304, the pressed groove 305 and the annular groove 306, and can be water or hydraulic oil, the pressed button 308 is pressed to cause hydraulic pressure inside the connecting groove 304, the pressed groove 305 and the annular groove 306 to change, and further to cause the pressing block 308 to press downwards, so that the fixed plate 403 moves downwards, after the pressed button 308 is released, the indicating rod 400 can return to the original position according to elastic potential energy of the spring 402, and the hydraulic pressure inside the connecting groove 304, the pressed groove 305 and the annular groove 306 can return to the initial state.

Furthermore, a plurality of ball screw nuts 206 are rotatably connected to the outer circumferential side of the ball screw nut 206, a sliding groove 209 matched with the ball screw nut 206 is formed in the inner wall of the cylinder 201, and the number of the ball screw nuts 206 is not less than eight.

When the utility model is used, when the rubber sheet on the pendulum is debugged, in the process of contacting the rubber sheet with the ground on two sides, in order to prevent the rubber sheet from being deformed due to compression and extrusion and causing inaccurate debugging, the indicating mechanism 400 can be moved downwards by pressing the compression button 308, the rod body 401 can reach the position of the rubber sheet to draw the distance between the rubber sheet and the measuring instrument close, thereby preventing the error caused by the observation at a distance by naked eyes and further influencing the precision, and when the distance between the rubber sheet and the ground in frictional contact is less than 126mm or exceeds 126mm, the hexagonal nut 503 can be rotated by the tool to rotate the rotating rod 501, thereby controlling the second bevel gear 502 to drive the first bevel gear 207 to rotate, further driving the ball screw nut 206 to rotate, thereby driving the ball screw 205 to move upwards or downwards, causing the mandril 203 to move upwards or downwards, further accurate control sheet rubber and the distance between the ground, come to conveniently reach 126 mm's debugging distance more.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pendulum-type friction coefficient apparatus forward static pressure calibrating device, includes base (101), lift post (200), indicating mechanism (300), instruction pole (400) and actuating mechanism (500), its characterized in that: the top of the base (101) is fixedly connected with a lifting column (200), one side of the top of the lifting column (200) is fixedly connected with a dial (102), the top of the lifting column (200) is rotatably connected with a pendulum shaft (103) and a pointer (104), the tail end of the pendulum shaft (103) is fixedly connected with a pendulum bob (105), and one side of the pendulum bob (105) is provided with an indicating mechanism (300);

the indicating mechanism (300) is provided with a fixed block (301), a movable groove (302), a groove (303), a connecting groove (304), a pressed groove (305), an annular groove (306), a pressed button (307), an extrusion block (308) and an extrusion groove (309), the movable groove (302) is formed in the fixed block (301), an indicating rod (400) is movably inserted in the movable groove (302), the groove (303) is formed in the middle of the movable groove (302), the connecting groove (304) is formed in one side of the inside of the fixed block (301), the pressed groove (305) is formed in the bottom of the connecting groove (304), the pressed button (307) is movably inserted in the pressed groove (305), the annular groove (306) is formed in the end portion, close to one side of the movable groove (302), of the connecting groove (304), and the two extrusion grooves (309) are formed in the bottom of the annular groove (306), the interior of the extrusion groove (309) is movably inserted with an extrusion block (308).

2. The apparatus for calibrating forward static pressure of pendulum-type friction coefficient tester as claimed in claim 1, wherein: the lifting column (200) is provided with a column body (201), a stopper (202), a push rod (203), a rotary connector (204), a ball screw (205), a ball screw nut (206), a first bevel gear (207), balls (208), a chute (209) and a driving mechanism (500), a block (202) is fixedly connected with the middle part of the inner wall of the column body (201), a top rod (203) is arranged at the top part of the block (202), the lower surface of the top rod (203) is rotationally connected with a rotary connector (204), the bottom of the rotary connector (204) is rotationally connected with a ball screw (205), a ball screw nut (206) is connected with the rotating rod at the outer side of the circumference of the ball screw (205), the lower surface of the ball screw nut (206) is fixedly connected with a first conical gear (207), and a driving mechanism (500) matched with the first bevel gear (207) is arranged on one side of the column body (201).

3. The pendulum-type friction coefficient determinator positive static pressure calibration device of claim 2, characterized in that: actuating mechanism (500) possesses dwang (501), second bevel gear (502) and hex nut (503), one side fixedly connected with second bevel gear (502) of dwang (501), opposite side fixedly connected with hex nut (503) of dwang (501).

4. The apparatus for calibrating forward static pressure of pendulum-type friction coefficient tester as claimed in claim 1, wherein: the indication rod (400) is provided with a rod body (401), a spring (402) and a fixing plate (403), the fixing plate (403) is fixedly connected to the middle of the rod body (401), the spring (402) is sleeved on the outer side of the circumference of the rod body (401), and the lower surface of the fixing plate (403) is fixedly connected to the spring (402).

5. The pendulum-type friction coefficient determinator positive static pressure calibration device of claim 2, characterized in that: the circumference outside of ball screw nut (206) rotates and is connected with a plurality of ball screw nuts (206), seted up on the inner wall of cylinder (201) with ball screw nut (206) assorted spout (209).

6. The device for calibrating forward static pressure of pendulum-type friction coefficient tester according to claim 5, wherein: the number of the ball screw nuts (206) is not less than eight.