CN213699960U

CN213699960U - Laboratory burette anchor clamps

Info

Publication number: CN213699960U
Application number: CN202022586285.5U
Authority: CN
Inventors: 周一军
Original assignee: Foshan Nanhai Zhengye Construction Engineering Quality Inspection Co ltd
Current assignee: Foshan Nanhai Zhengye Construction Engineering Quality Inspection Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-07-16
Anticipated expiration: 2030-11-10

Abstract

The application relates to a laboratory burette clamp, which comprises a clamping plate vertically arranged on a burette rack; a plurality of clamping arms which are rotationally arranged at two sides of the clamping plate and are vertically and symmetrically distributed; the pressing roller is rotatably arranged on one side of the clamping arm away from the rotating end and used for pressing the burette; the pressing block is arranged at the corresponding position of the clamping plate close to the pressing roller; a torsion spring which is arranged on the clamping plate, one end of the torsion spring is movably sleeved on the upper clamping arm, and the other end of the torsion spring is movably sleeved on the lower clamping arm and is used for driving the pressing roller to press the burette; the moving column is horizontally arranged on the clamping plate in a sliding manner and sleeved with the torsion spring; a driving assembly mounted on the clamping plate for driving the moving column to move along a predetermined direction; and a contact sensor mounted on the pressing block and electrically connected with the driving assembly. This application has automatic clamping function's characteristics when centre gripping buret to reach the effect that improves experimental efficiency.

Description

Laboratory burette anchor clamps

Technical Field

The application relates to the technical field of laboratory instruments, in particular to a laboratory burette clamp.

Background

In the laboratory, often need use the buret volume to get a certain amount of liquid, be provided with the titration switch on the buret, when using the buret, need with the buret centre gripping on the buret frame to the laboratory technician operation titration switch titrates, simultaneously, can also read the numerical value on the buret more accurately with the firm installation of buret on the buret frame.

At present, in the laboratory, often install the anchor clamps of the laboratory technician's centre gripping buret of being convenient for on the burette rack, chinese utility model discloses a public anchor clamps of No. CN205340861U, mainly by splint, the arm lock, the torsional spring is constituteed, establish the vertical cover of splint on the burette rack, two arm lock longitudinal symmetry rotate to set up on splint, and the effort that utilizes the torsional spring makes the arm lock be close to splint one end, all be provided with the centre gripping roller at splint and arm lock tip, thereby can be with the burette centre gripping between two centre gripping rollers, and simultaneously, be provided with the handle on the arm lock, the laboratory technician can open in order to get and put the burette through the torsion that breaks the handle and overcomes the torsional spring.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the laboratory technician need extrude the handle just can the centre gripping buret, when doing the experiment sometimes, is not convenient for one-hand operation to influence laboratory technician's experimental efficiency, remain to further improve this.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the holding of the burette by a laboratory technician and improve the holding effect of the clamp in the long-term use process.

The application provides a laboratory burette anchor clamps adopts following technical scheme:

a laboratory burette clamp comprises a clamp plate vertically arranged on a burette rack; a plurality of clamping arms which are rotationally arranged at two sides of the clamping plate and are vertically and symmetrically distributed; the pressing roller is rotatably arranged on one side of the clamping arm away from the rotating end and used for pressing the burette; the pressing block is arranged at the corresponding position of the clamping plate close to the pressing roller; a torsion spring which is arranged on the clamping plate, one end of the torsion spring is movably sleeved on the upper clamping arm, and the other end of the torsion spring is movably sleeved on the lower clamping arm and is used for driving the pressing roller to press the burette; the moving column is horizontally arranged on the clamping plate in a sliding manner and sleeved with the torsion spring; a driving assembly mounted on the clamping plate for driving the moving column to move along a predetermined direction; and a contact sensor mounted on the pressing block and electrically connected with the driving assembly.

Through adopting above-mentioned technical scheme, set up the torsional spring, remove post and drive assembly, open drive assembly and drive the cover and establish the torsional spring horizontal migration who removes the post to make two symmetrical arm lock rotate to being close to splint center direction, thereby can be with the buret centre gripping between support compression roller and support the piece, set up the contact inductor, can be when buret contact support piece, open drive assembly, so that the arm lock is close to and automatic centre gripping buret to support the piece, thereby can improve laboratory technician's experimental efficiency.

Preferably, the driving assembly comprises a driving piece horizontally mounted on the clamping plate, a screw is mounted at the output end of the driving piece, and the screw is sleeved on the movable column in a threaded manner.

Through adopting above-mentioned technical scheme, set up driving piece and screw rod, rotate through opening driving piece drive screw to drive and remove the post removal, with the position of adjusting the torsional spring.

Preferably, one side of the clamping arm, which is far away from the rotating end, is provided with a limiting column in a rotating mode, and two ends of the torsion spring penetrate through the corresponding limiting column in a sliding mode.

Through adopting above-mentioned technical scheme, set up spacing post, can be under the condition that does not influence the torsional spring both ends and exert the power to splint, the position at restriction torsional spring both ends to make the arm lock receive the control of torsional spring all the time.

Preferably, a pressure sensor is installed on the pressing surface of the pressing block, and the pressure sensor is electrically connected with the driving piece.

Through adopting above-mentioned technical scheme, set up pressure sensor, can detect the pressure that the piece supports and presses the buret to adjust the switch of driving piece, with the position of adjusting the torsional spring, thereby make the buret receive the pressure that supports in the predetermined range, not only can improve the steadiness of buret, can also reduce because of supporting the too big condition of damaging the buret of pressure.

Preferably, an on-off key is installed at the top of the clamping plate and electrically connected with the driving piece.

Through adopting above-mentioned technical scheme, set up the on & off switch, can be when the buret is taken out to needs, through pressing the on & off switch to open the driving piece and drive the torsional spring and remove, thereby remove the clamp arm and to the effect of pressing that supports of buret, then can take out the buret very conveniently.

Preferably, both ends of the torsion spring are bent outward in a semicircular shape.

Through adopting above-mentioned technical scheme, outwards bending into half ring type with the both ends of torsional spring, can reduce the torsional spring both ends and break away from spacing post and lead to the condition that the arm lock is lax.

Preferably, the pressing surface of the pressing block and the outer side surface of the pressing roller are both provided with arc surfaces and are adhered with non-slip mats.

Through adopting above-mentioned technical scheme, set up the cambered surface, can increase the briquetting and support the area of contact between compression roller and the buret to make the buret more firm, set up the slipmat, on the one hand, can improve the briquetting and support the frictional force of compression roller and buret, thereby further consolidate the buret, on the other hand, can cushion the briquetting and support the pressure between compression roller and the buret, thereby reduce because of supporting the too big condition of damaging the buret of pressure.

Preferably, a protective cover is arranged on one side, close to the torsion spring, of the clamping plate.

Through adopting above-mentioned technical scheme, through setting up the safety cover, can protect the spare part of installing on splint, simultaneously, can also improve the aesthetic property of anchor clamps.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the contact sensor, the driving piece and the moving column, when an experimenter places the burette on the pressing surface of the pressing block and touches the contact sensor, the driving piece can automatically drive the moving column to slide so as to drive the torsion spring to move for a preset distance, so that the pressing rollers at the two ends of the clamping arm are close to the pressing block and then clamp the burette, and therefore, the experimenter can conveniently clamp the burette to improve the experimental efficiency of the experimenter;

2. by arranging the pressure sensor, the abutting pressure of the abutting block on the clamping burette can be detected when the burette is clamped on the abutting block, when the abutting pressure exceeds a preset value, the driving piece is stopped to work so as to reduce the condition that the burette is damaged due to overlarge clamping force, if the abutting pressure is lower than the preset value, the driving piece is continuously started to continue clamping, so that the condition that the burette is broken due to loose clamping can be reduced, and by arranging the protective cover, the internal structure can be protected, and the mounting firmness of the internal structure can be reinforced;

3. through setting up the on & off switch, and set up the on & off switch and be close to buret centre gripping position one side, can be convenient for the laboratory technician singlehanded take off the buret to can improve laboratory technician's experimental efficiency.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Description of reference numerals: 1. a splint; 10. a burette stand; 11. a pressing block; 111. a protective cover; 112. A pressure sensor; 113. an on-off key; 2. clamping arms; 20. pressing the roller; 21. a non-slip mat; 22. a handle; 3. a contact sensor; 4. a torsion spring; 5. moving the column; 50. a drive member; 51. a screw; 52. mounting blocks; 6. a limiting column.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a laboratory burette anchor clamps.

Referring to fig. 1, laboratory burette anchor clamps are including installing splint 1 on burette rack 10, equal longitudinal symmetry is provided with support block 11 in splint 1 both sides, all rotate the arm lock 2 that is provided with two longitudinal symmetry at the middle part of splint 1 both sides, it is provided with to support compression roller 20 to keep away from rotation end one side rotation at arm lock 2, but support compression roller 20 and support block 11 cooperate the centre gripping burette, horizontal slip is provided with at splint 1 both sides middle part and removes post 5, all install torsional spring 4 on removing post 5, install on arm lock 2 at the both ends of torsional spring 4, and keep away from splint 1 center one side at arm lock 2 and be provided with handle 22.

The laboratory technician can be in two handles 22 with one side through the extrusion, make two arm lock 2 draw close to each other to overcoming the torsion of torsional spring 4, thereby make to support the compression roller 20 and keep away from to briquetting 11, then place the buret on the face of supporting of briquetting 11, loosen handle 22 again, make arm lock 2 will support compression roller 20 and support towards to briquetting 11 and support and press under the effect of torsional spring 4, thereby can centre gripping buret, and in the actual experiment process, the laboratory technician probably is when getting the buret, another hand is not convenient for extrude handle 22 and centre gripping buret, consequently, centre gripping buret again after needing to handle the thing of hand, must influence experimental efficiency like this.

In order to solve the above problem, in this embodiment, the contact sensor 3 is installed on the pressing block 11 located above the two sides, the screw rod 51 is installed on the clamping plate 1 in a rotating manner, the screw rod 51 is sleeved at one end of the moving column 5 far away from the clamping plate 1 in a threaded manner, the driving piece 50 is horizontally installed on the clamping plate 1, one end of the screw rod 5 far away from the moving column 5 is connected with the output end of the driving piece 50, the limiting column 6 is installed in the middle of the clamping arm 2 in a rotating manner, and the two ends of the torsion spring 4 are movably arranged on the.

When an experimenter places the burette on the pressing surface of the pressing block 11 and touches the contact sensor 3, the driving part 50 is opened to drive the screw rod 51 to rotate, so that the moving column 5 drives the torsion spring 4 to move a preset distance to the center of the clamping plate 1, and the two ends of the torsion spring 4 drive the clamping arm 2 to rotate under the limitation of the limit column 6, so that the pressing roller 20 draws close to the pressing block 11, thereby clamping the burette between the pressing roller 20 and the pressing block 11, therefore, the experimenter can clamp the burette on the burette rack 10 very quickly, thereby improving the experimental efficiency of the experimenter, in addition, in order to improve the stability of the screw rod 51, in the embodiment, the mounting block 52 is installed on the clamping plate 1, and one end of the screw rod 51 far away from the driving part 50 is installed on the mounting block 52 through the bearing rotation.

In the long-term use process of the torsion spring 4, when the two ends of the torsion spring 4 are at the same angle, the torsion force will gradually decrease, which may cause the loose clamping and break the burette, therefore, in order to solve the problem, in this embodiment, the pressure sensor 112 is installed on the pressing block 11 below the two sides, when the burette is clamped between the pressing roller 20 and the pressing block 11, the pressure sensor 112 can detect the clamping force of the pressing block 11 on the burette, when the clamping force is smaller than the preset value, the driving member 50 can continue to work, the burette is clamped stably, and when the clamping force exceeds the preset value, the driving member 50 will stop working, so as to control the clamping force within the preset range.

In order to further improve the experimental efficiency of the experimenter, in this embodiment, the switch key 113 is installed at the top of the two sides of the splint 1, the switch key 113 is electrically connected with the driving part 50, when the experimenter needs to take off the burette, the switch key 113 can be pressed by one hand to open the driving part 50, the torsion spring 4 is driven to move towards the direction far away from the center of the splint 1, so that the pressing roller 20 is far away from the pressing block 11 to loosen the burette, in addition, the switch key 113 is close to the clamping position of the burette, the experimenter can clamp the burette by four fingers except the tail finger by one hand, and then the tail finger presses the pressing key 113 to realize the process of taking out the burette by one hand, so that the trouble of extruding the handle 22 by the experimenter can be reduced, and then the burette can be taken.

Because the both ends of torsional spring 4 slide and wear to establish on spacing post 6, the removal in-process of torsional spring 4 can make both ends slide and leave spacing post 6 and lead to torsional spring 4 can't drive arm lock 2 to rotate, in order to solve this problem, in this embodiment, all outwards bend into the semicircle ring type at torsional spring 4 both ends.

In order to further improve the firmness of the burette, in this embodiment, the outer side surface of the pressing roller 20 and the pressing surface of the pressing block 11 are both set to be arc surfaces and are both attached with the anti-slip pads 21, so that the contact area between the pressing roller 20 and the pressing block 11 and the burette can be increased, the average clamping force of the contact surfaces is reduced, the damage of the burette due to too large pressing force can be further reduced, meanwhile, the friction force between the pressing roller 20 and the pressing block 11 and the burette can be increased, and the damage of the burette due to too small low pressure can be further reduced.

In order to protect the components of the clamp plate 1 and improve the appearance of the device, in this embodiment, a protective cover 111 is installed on the side of the clamp plate 1 close to the torsion spring 4 by screws, and in addition, the protective cover 111 can be removed to perform maintenance work on the internal structure very conveniently by removing the screws, in this embodiment, the driving member 50 is preferably a servo motor, and the anti-slip pad 21 is preferably a rubber pad.

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

Claims

1. The utility model provides a laboratory burette anchor clamps which characterized in that: comprises a splint (1) vertically arranged on a burette stand (10);

a plurality of clamping arms (2) which are rotationally arranged at two sides of the clamping plate (1) and are vertically and symmetrically distributed;

a pressing roller (20) which is rotatably arranged on one side of the clamping arm (2) far away from the rotating end and is used for pressing the burette;

the pressing block (11) is arranged at the corresponding position of the clamping plate (1) close to the pressing roller (20);

a torsion spring (4) which is arranged on the clamping plate (1), one end of which is movably sleeved on the upper clamping arm (2), and the other end of which is movably sleeved on the lower clamping arm (2) and is used for driving the pressing roller (20) to press against the burette;

a moving column (5) which is horizontally arranged on the splint (1) in a sliding way and is sleeved with the torsion spring (4);

a driving component which is arranged on the splint (1) and is used for driving the moving column (5) to move along a preset direction;

and a contact sensor (3) mounted on the pressing block (11) and electrically connected with the driving assembly.

2. The laboratory burette clamp of claim 1, wherein: the driving assembly comprises a driving piece (50) horizontally arranged on the clamping plate (1), a screw rod (51) is arranged at the output end of the driving piece (50), and the screw rod (51) is sleeved on the movable column (5) in a threaded manner.

3. The laboratory burette clamp of claim 1, wherein: keep away from rotation end one side in arm lock (2) and all rotate and be provided with spacing post (6), torsional spring (4) both ends all slide and wear to establish on corresponding spacing post (6).

4. The laboratory burette clamp of claim 2, wherein: and a pressure sensor (112) is arranged on the pressing surface of the pressing block (11), and the pressure sensor (112) is electrically connected with the driving piece (50).

5. The laboratory burette clamp of claim 2, wherein: an on-off key (113) is installed at the top of the clamping plate (1), and the on-off key (113) is electrically connected with the driving piece (50).

6. The laboratory burette clamp of claim 1, wherein: and two ends of the torsion spring (4) are bent outwards to form a semicircular ring shape.

7. The laboratory burette clamp of claim 1, wherein: the pressing surface of the pressing block (11) and the outer side surface of the pressing roller (20) are both provided with arc surfaces and are adhered with anti-skid pads (21).

8. The laboratory burette clamp of claim 1, wherein: and a protective cover (111) is arranged on one side, close to the torsion spring (4), of the clamping plate (1).