CN110411877B

CN110411877B - Rockwell hardness meter with function of adjusting angle of measuring platform

Info

Publication number: CN110411877B
Application number: CN201910782439.7A
Authority: CN
Inventors: 卢凤军; 侯震宇; 于五一; 乔艳东
Original assignee: Beijing Jingcheng Hengtong Engineering Technology Testing Co ltd
Current assignee: Beijing Jingcheng Hengtong Engineering Technology Testing Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2022-01-11
Anticipated expiration: 2039-08-23
Also published as: CN110411877A

Abstract

The invention relates to a Rockwell hardness tester with an angle adjusting function, which comprises a machine body, a pressure head arranged on the machine body, a lifting column vertically arranged on the machine body and positioned right below the pressure head, and a measuring platform arranged on the lifting column and used for placing a block to be tested, wherein a connecting piece hinged with the lifting column is arranged in the middle of the lower surface of the measuring platform, and an adjusting gap is formed between the measuring platform and the lifting column; the upper surface of the measuring platform is provided with a clamping device for fixing the block to be tested; the measuring platform lower surface just is located the articulated sleeve pipe that is provided with respectively of the position of connecting piece both sides, and the vertical setting of sleeve pipe is equipped with the drive assembly that can drive the sleeve pipe and reciprocate in order to carry out the adjustment to measuring platform's angle on the lift post. The invention has the advantage that the angle of the measuring platform can be adjusted according to the measuring requirement so as to adapt to different types of blocks to be tested.

Description

Rockwell hardness meter with function of adjusting angle of measuring platform

Technical Field

The invention relates to the technical field of Rockwell hardometers, in particular to a Rockwell hardometer with a function of adjusting the angle of a measuring platform.

Background

The rockwell hardness tester is a measuring instrument that determines the hardness value of a block to be tested by the depth of indentation plastic deformation of the surface of the block to be tested.

The existing Rockwell hardness tester comprises a base, a rack and a cross arm which are sequentially arranged from bottom to top, wherein the base, the rack and the cross arm are integrally connected and are C-shaped, a pressure head is arranged on the lower surface of the cross arm, a lifting table is arranged on the upper surface of the base, and the lifting table comprises a measuring platform and a lifting mechanism, wherein the measuring platform is located under the pressure head, and the lifting mechanism drives the measuring platform to lift.

During measurement, a block to be tested is placed on the measuring platform, and then the block to be tested is lifted to the position below the pressure head through the lifting mechanism to be measured.

However, the above prior art has the following disadvantages: the test device is only suitable for a to-be-tested block with a tested surface perpendicular to the axis of the pressure head, when the tested surface of the to-be-tested block has a certain gradient (such as a right triangle or a right trapezoid), a certain included angle exists between the tested surface of the to-be-tested block and the pressure head, and at the moment, if external force is applied for measurement, hardness measurement data will be distorted, the pressure head may be damaged or broken, and even the lever mechanism inside the device is bent and deformed.

Disclosure of Invention

The invention aims to provide a Rockwell hardness tester with a function of adjusting the angle of a measuring platform, which has the advantage that the angle of the measuring platform can be adjusted according to the measuring requirement so as to adapt to different types of blocks to be tested.

The technical purpose of the invention is realized by the following technical scheme: a Rockwell hardness tester with an angle adjusting function comprises a machine body, a pressure head, a lifting column and a measuring platform, wherein the pressure head is installed on the machine body;

the upper surface of the measuring platform is provided with a clamping device for fixing the block to be tested;

the measuring platform lower surface just is located the articulated sleeve pipe that is provided with respectively of the position of connecting piece both sides, and the vertical setting of sleeve pipe is equipped with the drive assembly that can drive the sleeve pipe and reciprocate in order to carry out the adjustment to measuring platform's angle on the lift post.

Through above-mentioned technical scheme, during the measurement, will await measuring the piece and clean and place on measuring platform, then fix it through clamping device, when the face of being surveyed of waiting to test the piece is domatic, the staff adjusts the sleeve pipe that is located the lower one side of the piece that awaits measuring through drive assembly, make its upward movement, thereby promote the measuring platform lifting, the face of being surveyed of piece and the axis of pressure head remain perpendicular until waiting to test, so that guarantee measurement accuracy, compare the rockwell sclerometer among the prior art, the rockwell sclerometer in this application can adjust measuring platform's angle according to the measurement needs, so that adapt to different kinds of the piece of waiting to test.

The invention is further configured to: the driving assembly comprises a lantern ring sleeved on the lifting column in a sliding mode, supporting rods symmetrically and fixedly connected to the outer wall of the lantern ring and parallel to the measuring platform, and a screw rod vertically penetrating through the supporting rods and rotatably connected with the supporting rods through bearings, the screw rod extends into the lantern ring and is in threaded connection with the same, and a knob is fixedly connected to a rod body below the supporting rods.

Through above-mentioned technical scheme, according to the slope of the face of being surveyed, the adjustment awaits measuring the angle that the piece is located the lower one side of measuring platform, during the adjustment, rotates the knob, makes the screw rod drive the sleeve pipe upward movement of this side to promote the measuring platform lifting, the face of being surveyed up to the piece of waiting to test keeps perpendicular with the axis of pressure head, so that guarantee measurement accuracy.

The invention is further configured to: the outer wall of the lantern ring is connected with a jackscrew which is used for tightly jacking and fixing the lantern ring in a threaded manner.

Through above-mentioned technical scheme, the setting of jackscrew for fix the lantern ring, prevent that measuring platform from taking place to rotate at the measuring in-process.

The invention is further configured to: the circumferential surface of the knob is provided with anti-skid grains.

Through above-mentioned technical scheme, the setting of antiskid line for increase the frictional force between knob and the palm, prevent that the pivoted in-process from skidding because sweat on the palm.

The invention is further configured to: the clamping device comprises clamping pieces which are symmetrically and slidably arranged on the measuring platform and fixing components for fixing the clamping pieces;

the clamping piece comprises a horizontal plate and a vertical plate integrally connected with the horizontal plate, and the clamping piece and the vertical plate are L-shaped;

the fixing assembly comprises a trapezoidal block arranged below the horizontal plate, a vertical rod fixedly connected to the upper surface of the trapezoidal block and penetrating through the horizontal plate in a sliding mode, and a nut in threaded connection with the vertical rod, and the width of the trapezoidal block is gradually increased from top to bottom;

the intermediate position of measuring platform upper surface sets up the gliding dovetail groove of confession trapezoidal piece, and the dovetail groove extends and runs through measuring platform along the horizontal direction.

According to the technical scheme, during assembly, the trapezoidal block is placed in the trapezoidal groove in a sliding mode from one side, then the horizontal plate is installed on the vertical rod, and finally the nut is screwed on the vertical rod; when the block to be tested is fixed, the clamping piece slides along the trapezoidal groove, so that the two vertical plates clamp the block to be tested, and then the clamping piece is fixed by screwing the nut.

The invention is further configured to: the connecting piece includes the installation piece of mountable in to the lift post top and the connecting rod of rigid coupling at the installation piece upper surface, passes through ball hinged joint between connecting rod and the measuring platform and is connected.

Through the technical scheme, the angle of the measuring platform can be adjusted conveniently.

The invention is further configured to: the measuring platform is rectangular, and a bubble level meter is embedded in one side of the measuring platform.

According to the technical scheme, after the angle of the measuring platform is adjusted, a worker takes out the bubble level meter and places the bubble level meter on the measured surface of the block to be measured, at the moment, whether bubbles in the bubble level meter are centered or not is observed, and if the bubbles are centered, measurement is started; and if the bubble is not centered, continuously adjusting the angle of the measuring platform until the bubble starts to be measured after being centered.

The invention is further configured to: and a hand buckling groove for conveniently taking the bubble level meter is formed in the side wall of the measuring platform.

Through above-mentioned technical scheme, detain the setting in hand groove, make things convenient for the staff to stretch into the recess with the finger in with the bubble spirit level take out.

The invention is further configured to: the lower surface rigid coupling of lift post has the lead screw of vertical setting, and the lead screw stretches into in the organism and rather than sliding connection, threaded connection has the hand wheel on the lead screw, rotates between hand wheel and the organism to be connected, and the position rigid coupling that just is located the lead screw in the organism has the guide bar that the cross-section is the rectangle, and the guide bar stretches into in the lead screw and rather than sliding connection by down.

Through above-mentioned technical scheme, when rotating the hand wheel, the lead screw can follow guide bar vertical movement to drive lift post and measuring platform lift.

The invention is further configured to: the top end of the sleeve is fixedly connected with a pair of ear plates, the lower surface of the measuring platform is fixedly connected with a connecting plate inserted between the two ear plates, and the three are connected through a shaft.

Through above-mentioned technical scheme, realize articulated connection between messenger's sleeve pipe and the measuring platform to adjust measuring platform's angle.

In conclusion, the beneficial technical effects of the invention are as follows:

1. according to the Rockwell hardness tester, a worker can adjust the angle of the measuring platform through the driving assembly and the sleeve according to the measuring requirement, so that the measured surface of the block to be measured is perpendicular to the axis of the pressure head, and the measuring precision is improved;

2. the clamping device is used for fixing the block to be tested so that the pressure head can be accurately pressed into the surface to be tested;

3. the bubble level meter is arranged and used for improving the adjustment precision, when the angle adjustment of the measuring platform is finished, a worker takes out the bubble level meter and places the bubble level meter on the measured surface of the block to be measured, at the moment, whether bubbles in the bubble level meter are centered or not is observed, and if the bubbles are centered, the measurement is started; and if the bubble is not centered, continuously adjusting the angle of the measuring platform until the bubble starts to be measured after being centered.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view showing the connection relationship between the measuring platform, the connecting member and the lifting column;

FIG. 3 is a schematic view showing a connection relationship between a lead screw and a guide bar;

FIG. 4 is an exploded view showing a specific structure of the holding device;

FIG. 5 is an enlarged schematic view taken at A in FIG. 4;

fig. 6 is a schematic view showing the state of the angle adjustment of the measuring platform.

In the figure, 1, a machine body; 11. a base; 12. a frame; 13. a cross arm; 2. a pressure head; 3. a measuring platform; 31. a trapezoidal groove; 32. a connecting plate; 33. a block to be tested; 34. a handle buckling groove; 4. a lifting column; 41. mounting grooves; 42. a lead screw; 43. a hand wheel; 44. a guide bar; 5. a connecting member; 51. mounting blocks; 52. a connecting rod; 6. a clamping device; 61. a clamping member; 611. a horizontal plate; 612. a vertical plate; 62. a fixing assembly; 621. a trapezoidal block; 622. a vertical rod; 623. a nut; 7. a sleeve; 71. an ear plate; 8. a drive assembly; 81. a collar; 82. a support bar; 83. a screw; 84. a knob; 85. carrying out top thread; 9. a bubble level.

Detailed Description

Referring to fig. 1 and 2, the rockwell hardness tester with the function of adjusting the angle of the measuring platform disclosed by the invention comprises a machine body 1, a pressure head 2 and a measuring platform 3, wherein the machine body 1 comprises a base 11, a frame 12 and a cross arm 13 which are sequentially arranged from bottom to top, the base 11, the frame 12 and the cross arm 13 are integrally connected and are in a C shape, the pressure head 2 is arranged on the lower surface of the cross arm 13, the measuring platform 3 is in a rectangular shape and is arranged right below the pressure head 2, a lifting column 4 is arranged on the base 11, a connecting piece 5 which is hinged with the lifting column 4 is arranged in the middle of the lower surface of the measuring platform 3, the connecting piece comprises an installation block 51 and a connecting rod 52 which is fixedly connected on the upper surface of the installation block 51, the connecting rod 52 is hinged with the measuring platform 3 through a ball, the top end of the lifting column 4 is provided with an installation groove 41 which is matched with the installation block 51, before the use, the installation block 51 is inserted into the installation groove 41 on the top end of the lifting column 4, the connecting piece 5 is arranged to form an adjusting gap between the measuring platform 3 and the lifting column 4.

Referring to fig. 1 and 3, a vertically arranged lead screw 42 is fixedly connected to the lower surface of the lifting column 4, the lead screw 42 extends into the base 11 and is slidably connected to the base, a hand wheel 43 is connected to the lead screw 42 in a threaded manner, the hand wheel 43 is rotatably connected to the base 11, a guide rod 44 with a rectangular cross section is fixedly connected to a position in the base 11 and right below the lead screw 42, the guide rod 44 extends into the lead screw 42 from bottom to top and is slidably connected to the lead screw 42, and when the hand wheel 43 is rotated, the lead screw 42 can vertically move along the guide rod 44, so that the lifting column 4 and the measuring platform 3 are driven to lift.

Referring to fig. 4, the upper surface of the measuring platform 3 is provided with a clamping device 6 for fixing the block to be tested 33 so that the indenter 2 (see fig. 1) can be accurately pressed into the surface to be tested. The clamping device 6 comprises clamping pieces 61 which are symmetrically and slidably arranged on the measuring platform 3 and fixing components 62 for fixing the clamping pieces 61; the clamping piece 61 comprises a horizontal plate 611 and a vertical plate 612 integrally connected with the horizontal plate 611, the two are L-shaped, and one side of the vertical plate 612 opposite to the horizontal plate 611 is a clamping surface; the fixing assembly 62 comprises a trapezoidal block 621 arranged below the horizontal plate 611, a vertical rod 622 fixedly connected to the upper surface of the trapezoidal block 621 and slidably penetrating through the horizontal plate 611, and a nut 623 in threaded connection with the vertical rod 622, wherein the width of the trapezoidal block 621 is gradually increased from top to bottom; the middle position of measuring platform 3 upper surface is seted up and is supplied gliding dovetail groove 31 of trapezoidal piece 621, and dovetail groove 31 extends and runs through measuring platform 3 along the horizontal direction.

During assembly, the trapezoidal block 621 is placed in the trapezoidal groove 31 in a sliding manner from one side, then the horizontal plate 611 is installed on the vertical rod 622, and finally the nut 623 is screwed on the vertical rod 622; when the block 33 to be tested is fixed, the clamping piece 61 slides along the trapezoidal groove 31, so that the two vertical plates 612 clamp the block 33 to be tested, and then the clamping piece 61 is fixed by screwing the nut 623.

Referring to fig. 4 and 5, the sleeves 7 are symmetrically arranged on the lower surface of the measuring platform 3 and on two sides of the connecting member 5, the sleeves 7 are vertically arranged, a pair of ear plates 71 is fixedly connected to the top ends of the sleeves 7, an insertion gap is formed between the two ear plates 71, the connecting plate 32 inserted into the insertion gap is fixedly connected to the lower surface of the measuring platform 3, and the three are connected through a shaft. Be equipped with drive assembly 8 on the lift post 4, the staff can be according to the measurement needs, comes drive sleeve 7 through drive assembly 8 and reciprocates to adjust measuring platform 3's angle, so that detect different kinds of piece 33 that awaits measuring.

Drive assembly 8 includes the lantern ring 81 of slip cup joint on lift post 4, and the symmetry rigid coupling on lantern ring 81 outer wall and the bracing piece 82 that parallels with measuring platform 3, one-to-one between bracing piece 82 and the sleeve pipe 7, all wear to be equipped with screw rod 83 perpendicularly on two bracing pieces 82, screw rod 83 includes screw thread section and polished rod section, screw rod 83's polished rod section passes through the bearing and is connected with bracing piece 82 rotates, screw rod 83's screw thread section stretches into in the sleeve pipe 7 and with the inner wall threaded connection of sleeve pipe 7, the rigid coupling is equipped with knob 84 on the body of rod that screw rod 83 is located bracing piece 82 below, staff's accessible knob 84 rotates screw rod 83, knob 84 is circular block, be equipped with anti-skidding line on its global, be used for increasing the frictional force between knob 84 and the palm, prevent that the pivoted in-process from skidding because of sweat on the palm. Normally, the measuring platform 3 is horizontal supported by two sleeves 7.

Referring to fig. 4, in order to prevent the measuring platform 3 from rotating in the measuring process, a jackscrew 85 is arranged on the outer wall of the lantern ring 81 and is in threaded connection with the lantern ring 81, and after the measuring platform 3 and the driving assembly 8 are installed, a worker jacks the lantern ring 81 through the jackscrew 85 and fixes the jackscrew.

Referring to fig. 4 and 6, before measurement, the block 33 to be tested is wiped clean and placed on the measurement platform 3, the block is fixed by the clamping device 6, measurement is started after preparation, and when the surface to be measured of the block 33 to be tested is horizontal, a worker can directly rotate the hand wheel 43 to enable the screw rod 42 to drive the measurement platform 3 to ascend until the pressure head 2 is slowly pressed into the surface to be measured for testing; when waiting to test piece 33 the face of being surveyed is domatic, the staff rotates the knob 84 that is located the lower one side of waiting to test piece 33, make the screw rod 83 drive the upward movement of sleeve pipe 7 of this side, thereby promote the lifting of measuring platform 3, it is perpendicular with the axis of pressure head 2 to wait to test piece 33 the face of being surveyed, so that guarantee measurement accuracy, compare the rockwell sclerometer among the prior art, the rockwell sclerometer in this application can adjust measuring platform 3's angle according to the measurement needs, so that adapt to different kind of waiting to test piece 33.

Referring to fig. 4, in order to further improve the adjustment accuracy, a bubble level 9 is disposed on one side of the measuring platform 3, a groove for embedding the bubble level 9 is disposed on a side wall of the measuring platform 3, and the bubble level 9 is usually accommodated in the side wall of the measuring platform 3.

After the angle adjustment of the measuring platform 3 is finished, the worker takes out the bubble level meter 9 and places the bubble level meter on the measured surface of the block to be measured 33, at the moment, whether bubbles in the bubble level meter 9 are centered or not is observed, and if the bubbles are centered, the measurement is started; if the bubble is not centered, the angle of the measuring platform 3 is continuously adjusted until the bubble starts to be measured after being centered.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a rockwell hardness meter with adjust measuring platform angle function, includes organism (1), installs pressure head (2), vertical setting on organism (1) are in on organism (1) and be located lift post (4) under pressure head (2) and setting are in on lift post (4) for waiting to test measuring platform (3) that piece (33) were placed, its characterized in that: a connecting piece (5) hinged with the lifting column (4) is arranged in the middle of the lower surface of the measuring platform (3), and an adjusting gap exists between the measuring platform (3) and the lifting column (4);

the upper surface of the measuring platform (3) is provided with a clamping device (6) for fixing a block to be tested (33);

the lower surface of the measuring platform (3) and the positions at the two sides of the connecting piece (5) are respectively provided with a sleeve (7) in a hinged mode, the sleeves (7) are vertically arranged, and the lifting column (4) is provided with a driving assembly (8) capable of driving the sleeves (7) to move up and down so as to adjust the angle of the measuring platform (3);

the driving assembly (8) comprises a lantern ring (81) which is sleeved on the lifting column (4) in a sliding mode, supporting rods (82) which are symmetrically and fixedly connected to the outer wall of the lantern ring (81) and parallel to the measuring platform (3), and a screw rod (83) which vertically penetrates through the supporting rods (82) and is rotatably connected with the supporting rods (82) through bearings, the screw rod (83) extends into the sleeve (7) and is in threaded connection with the sleeve, and a knob (84) is fixedly connected to a rod body of the screw rod (83) located below the supporting rods (82);

the outer wall of the lantern ring (81) is in threaded connection with a jackscrew (85) which tightly jacks and fixes the lantern ring;

the measuring platform (3) is rectangular, and a bubble level meter (9) is embedded in one side of the measuring platform.

2. The Rockwell hardness tester with the function of adjusting the angle of the measuring platform according to claim 1, wherein: the circumferential surface of the knob (84) is provided with anti-skid grains.

3. The Rockwell hardness tester with the function of adjusting the angle of the measuring platform according to claim 1, wherein: the clamping device (6) comprises clamping pieces (61) which are symmetrically arranged on the measuring platform (3) in a sliding mode and fixing assemblies (62) for fixing the clamping pieces (61);

the clamping piece (61) comprises a horizontal plate (611) and a vertical plate (612) integrally connected with the horizontal plate (611), and the clamping piece and the vertical plate are L-shaped;

the fixing assembly (62) comprises a trapezoidal block (621) arranged below the horizontal plate (611), a vertical rod (622) fixedly connected to the upper surface of the trapezoidal block (621) and sliding through the horizontal plate (611), and a nut (623) in threaded connection with the vertical rod (622), wherein the width of the trapezoidal block (621) is gradually increased from top to bottom;

the middle position of the upper surface of the measuring platform (3) is provided with a trapezoidal groove (31) for the trapezoidal block (621) to slide, and the trapezoidal groove (31) extends along the horizontal direction and penetrates through the measuring platform (3).

4. The Rockwell hardness tester with the function of adjusting the angle of the measuring platform according to claim 1, wherein: the connecting piece (5) comprises an installation block (51) which can be installed in the top end of the lifting column (4) and a connecting rod (52) which is fixedly connected to the upper surface of the installation block (51), and the connecting rod (52) is connected with the measuring platform (3) in a ball hinge mode.

5. The Rockwell hardness tester with the function of adjusting the angle of the measuring platform according to claim 1, wherein: and a buckle groove (34) for conveniently taking the bubble level meter (9) is formed in the side wall of the measuring platform (3).

6. The Rockwell hardness tester with the function of adjusting the angle of the measuring platform according to claim 1, wherein: the lower surface rigid coupling of lift post (4) has lead screw (42) of vertical setting, lead screw (42) stretch into in organism (1) and rather than sliding connection, threaded connection has hand wheel (43) on lead screw (42), hand wheel (43) with rotate between organism (1) and be connected, the rigid coupling has guide bar (44) that the cross-section is the rectangle in organism (1), guide bar (44) from bottom to top stretch into in lead screw (42) and with lead screw (42) sliding connection.

7. The Rockwell hardness tester with the function of adjusting the angle of the measuring platform according to claim 1, wherein: the top rigid coupling of sleeve pipe (7) has a pair of otic placode (71), the lower surface rigid coupling of measuring platform (3) has and inserts two connecting plate (32) between otic placode (71), through the hub connection between the three.