CN216863599U - Mechanical mechanism for opening and closing cover of screw sample tube - Google Patents

Abstract

The utility model provides a mechanical mechanism for a screw sample tube switch cover, wherein a clamp barrel is vertically arranged, a through groove is arranged on a side wall along the radial direction of a circle where the side wall is located, the side wall is communicated with a hollow cavity of the clamp barrel, clamping pieces are vertically arranged and radially arranged in the through groove, the upper end of each clamping piece is rotatably connected with the top of the through groove around the tangent line of the circle, the inner side of the lower end of each clamping piece extends into the hollow cavity, a plurality of through grooves are arranged at intervals along the circumferential direction of the circle, the clamping pieces and the through grooves are arranged in a one-to-one correspondence manner, annular grooves are horizontally arranged at the lower part of the outer side surface of the side wall, the through grooves are communicated, an elastic ring is horizontally arranged and embedded in the annular grooves and abuts against the outer side of the lower end of the clamping pieces, a top plate is horizontally arranged at the top end of the clamp barrel, a vertical shaft is arranged at the central position of the top plate, and a driving device is connected with the vertical shaft for driving the vertical shaft to horizontally rotate. The automatic cover opening and closing device can automatically open and close the cover, and is used for solving the problems of low working efficiency and easy cross contamination caused by physical consumption, discomfort of hands and the like during long-time operation.

Description

Mechanical mechanism for opening and closing cover of screw sample tube

Technical Field

The utility model relates to the technical field of experimental consumables, in particular to the technical field of screw sample tubes, and particularly relates to a mechanical mechanism for opening and closing a cover of a screw sample tube.

Background

Screw socket sample cell, generally including body and tube cap, the body is cylindrical, inside has the sample chamber, the open-top, the lateral surface on top has the external screw thread, the tube cap is cylindrical equally, the bottom has cylindrical recess, cylindrical recess's lateral wall has the internal thread, the lateral surface on top that the tube cap was established and the thread engagement body through cylindrical recess cover, be convenient for twist move the tube cap, lateral surface at the tube cap is provided with a plurality of vertical recesses usually, the mutual interval setting in lateral surface place circumference of tube cap is followed to a plurality of vertical recesses.

At present, the screw sample tube is in the medical treatment, disease control, customs, third party detection mechanism, the application in fields such as criminal investigation is more and more extensive, except need use a large amount of screw sample tubes in the national screening of major infectious diseases, medical treatment at ordinary times, the virus screening in fields such as disease control, gene testing, the screw sample tube all need be used to the DNA extraction etc. of the material of examining and repairing in the criminal investigation field, this leads to screw sample tube use quantity to increase by a wide margin, especially in sampling and detection link, use screw sample tube to preserve sample/manual minute liquid in-process, need the manual spin tube cap of operating personnel, place the manual spin tube cap of needing after the completion of swab sample/liquid taking, operating personnel can single independent operation, or double minute liquid work is accomplished in the cooperation operation. When the number of the screw sample tubes is large, the manual cap screwing mode is adopted, so that the physical strength consumption of an operator is increased, the discomfort of hands is enhanced, the working efficiency is low after long-time operation, and the risk of cross contamination exists.

In order to deal with the situation, the inventor hopes to develop a full-automatic cup separating processing system product with the functions of automatically opening the cover, automatically closing the cover and automatically adding samples, and the full-automatic cup separating processing system product is used for solving the problems of low working efficiency and easy cross contamination caused by physical consumption, uncomfortable hands and the like during long-time operation. The full-automatic cup separating processing system is used as an auxiliary tool in a sampling/detecting link, an operator only needs to place a sampling pipe frame in an instrument, the instrument can automatically clamp and rotate to complete the operation of opening the cover, the sample is automatically placed/added, and the operation of closing the cover can be completed through automatic rotation. The whole operation process saves physical power and time, improves the working efficiency, avoids cross contamination among samples, and ensures the safety of the samples and operators.

Therefore, it is first needed to provide a mechanical mechanism for opening and closing a screw sample tube, which can automatically open and close the cap, and is used to solve the problems of low working efficiency and cross contamination caused by physical consumption, discomfort in hands and the like during long-time operation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, an object of the present invention is to provide a mechanical mechanism for opening and closing a screw sample tube, which can automatically open and close the cap, is used to solve the problems of low working efficiency and easy cross contamination caused by physical consumption, discomfort in hands and the like during long-time operation, and is suitable for large-scale popularization and application.

The utility model also aims to provide a mechanical mechanism for opening and closing the cover of the screw sample tube, which has the advantages of ingenious design, simple structure, simple and convenient manufacture and low cost and is suitable for large-scale popularization and application.

In order to achieve the above object, the present invention provides a mechanical mechanism for opening and closing a cap of a screw sample tube, which is characterized by comprising a tube cap clamp structure and a driving device, wherein:

the pipe cover clamp structure comprises a clamp barrel body, clamping pieces, elastic rings, a top plate and a vertical shaft, wherein the clamp barrel body is vertically arranged, the clamp barrel body is provided with a hollow cavity, the side wall of the clamp barrel body is provided with through grooves along the radial direction of a circle where the side wall of the clamp barrel body is located, the through grooves are communicated with the hollow cavity, the clamping pieces are vertically arranged and are arranged in the through grooves along the radial direction, the upper ends of the clamping pieces are rotatably connected with the top of the through grooves around the tangent line of the circle, the inner sides of the lower ends of the clamping pieces extend into the hollow cavity, the through grooves are multiple in number, the through grooves are arranged at intervals along the circumferential direction of the circle, the number of the clamping pieces is the same as that of the through grooves, the clamping pieces and the through grooves are arranged in a one-to-one correspondence manner, and the lower parts of the side surface of the side wall of the clamp barrel body are horizontally provided with annular grooves, the annular groove communicates through the groove, the elastic ring is horizontally arranged and embedded in the annular groove and abutted against the outer side of the lower end of the clamping piece, the top plate is horizontally arranged on the top end of the clamp barrel, the vertical shaft is arranged at the central position of the top plate, and the driving device is connected with the vertical shaft and used for driving the vertical shaft to rotate horizontally.

Preferably, the elastic ring is an O-spring.

Preferably, the number of the through grooves is 6, and the number of the clamping pieces is 6.

Preferably, the tube cap clamp structure further comprises an outer shell, the outer shell is sleeved outside the side wall of the clamp cylinder, and the top end of the outer shell is connected with the top end of the clamp cylinder.

Preferably, the driving means is a driving motor.

Preferably, the mechanical mechanism for the screw sample tube switch cover further comprises a locking structure which is easy to replace, the locking structure comprises a butt joint transmission shaft, a first ball, a first elastic piece and a locking shaft sleeve, the butt joint transmission shaft is vertically arranged, the vertical shaft is vertically inserted into the lower end of the butt joint transmission shaft and is limited by the horizontal rotation of the lower end of the butt joint transmission shaft, an annular limiting groove is horizontally arranged on the outer side surface of the vertical shaft, a round hole is formed in the side wall of the lower end of the butt joint transmission shaft, the first ball is located in the round hole and embedded in the annular limiting groove, the number of the round holes is multiple, the round holes surround the vertical shaft and are horizontally arranged at intervals, the number of the first ball is the same as that of the round holes, the first ball and the round hole are arranged in one-to-one correspondence, the locking shaft sleeve is vertically movably sleeved on the outer side wall of the lower end of the butt joint transmission shaft and is shielded by the vertical movable sleeve The round hole is abutted against the first round ball, the first elastic piece is vertically arranged and located between the butt joint transmission shaft and the locking shaft sleeve and respectively connected with the butt joint transmission shaft and the locking shaft sleeve, and the driving device is connected with the butt joint transmission shaft and used for driving the butt joint transmission shaft to rotate horizontally.

Preferably, the first elastic member is a cylindrical spring, and the cylindrical spring is sleeved outside the side wall of the lower end of the butt joint transmission shaft.

Preferably, the mechanical mechanism for opening and closing the screw sample tube further comprises a middle elastic shaft structure, the middle elastic shaft structure comprises a transmission shaft, a second elastic piece and a positioning pin, the transmission shaft and the second elastic piece are both vertically arranged, the bottom of the transmission shaft is provided with a vertical shaft hole, the side wall of the transmission shaft is provided with a positioning hole, the positioning hole is communicated with the vertical shaft hole, the side wall of the upper end of the butt joint transmission shaft is provided with a vertical limiting groove, the upper end of the butt joint transmission shaft is vertically movably inserted into the vertical shaft hole, the positioning pin is horizontally inserted into the positioning hole and the vertical limiting groove, the second elastic piece is located between the top wall of the vertical shaft hole and the top of the butt joint transmission shaft and respectively abuts against the top wall of the vertical shaft hole and the top of the butt joint transmission shaft, and the driving device is connected with the transmission shaft and used for driving the transmission shaft to rotate horizontally.

Furthermore, the mechanical mechanism for opening and closing the screw sample tube further comprises an upper part torque-fixable structure and a rotary transmission structure, wherein:

the rotary transmission structure comprises a belt wheel and a belt wheel shaft, the belt wheel shaft is vertically arranged, the belt wheel is horizontally arranged and sleeved at the upper end of the belt wheel shaft, and the driving device is connected with the belt wheel and used for driving the belt wheel to rotate horizontally;

the upper part torque-fixable structure comprises a cylinder bearing seat, an annular gasket, a second ball, a lower limiting flange, an upper limiting flange, a third elastic piece, a first bearing, a second bearing and a third bearing, wherein the cylinder bearing seat is vertically arranged, the first bearing, the second bearing and the third bearing are horizontally arranged and are sequentially arranged in the cylinder bearing seat at intervals from top to bottom, the first bearing and the third bearing are respectively positioned in the upper end and the lower end of the cylinder bearing seat, the middle part of a pulley shaft is vertically inserted in the first bearing and the second bearing, the annular gasket is horizontally arranged and sleeved on the middle part of the pulley shaft, the annular gasket is positioned between the first bearing and the second bearing and respectively abuts against the first bearing and the second bearing, the upper limiting flange and the lower limiting flange are horizontally arranged and sequentially arranged at intervals from top to bottom, the lower limiting flange is sleeved on the outer side face of the lower end of the pulley shaft, the upper limiting flange is sleeved on the outer side face of the lower end of the pulley shaft, the second round ball is rotatably arranged on the upper limiting flange and the lower limiting flange and is respectively abutted against the upper limiting flange and the lower limiting flange, the third elastic piece is vertically arranged and is positioned between the second bearing and the upper limiting flange and is respectively connected with the second bearing and the upper limiting flange, and the upper end of the transmission shaft is vertically inserted in the third bearing and is connected with the lower end of the pulley shaft.

Particularly preferably, the third elastic member is a cylindrical spring which is fitted over an outer side surface of the lower end of the pulley shaft.

The utility model has the following beneficial effects:

1. the clamp barrel of the pipe cover clamp structure of the mechanical mechanism for opening and closing the cover of the screw sample pipe is vertically arranged and is provided with a hollow cavity, the side wall of the clamp barrel is provided with a through groove along the radial direction of a circle where the clamp barrel is arranged, the through groove is communicated with the hollow cavity, the clamping pieces are vertically arranged and radially arranged in the through groove, the upper ends of the clamping pieces are rotatably connected with the top of the through groove around the tangent line of the circle, the inner sides of the lower ends of the clamping pieces extend into the hollow cavity, the through grooves are arranged at intervals along the circumferential direction of the circle, the clamping pieces and the through grooves are arranged in one-to-one correspondence, the lower part of the outer side surface of the side wall of the clamp barrel is horizontally provided with an annular groove, the annular groove is communicated with the through groove, the elastic ring is horizontally arranged and embedded in the annular groove and abuts against the outer side of the lower end of the clamping pieces, the top plate is horizontally arranged on the top end of the clamp barrel, the vertical shaft is arranged on the central position of the top plate, and the driving device is connected with the vertical shaft for driving the vertical shaft to horizontally rotate, therefore, the automatic cover opening and closing device can automatically open and close the cover, is used for solving the problems of low working efficiency and easy cross contamination caused by physical consumption, discomfort of hands and the like in long-time operation, and is suitable for large-scale popularization and application.

2. The clamp barrel of the pipe cover clamp structure of the mechanical mechanism for opening and closing the cover of the screw sample pipe is vertically arranged and provided with a hollow cavity, the side wall of the clamp barrel is provided with a through groove along the radial direction of a circle where the clamp barrel is located, the through groove is communicated with the hollow cavity, the clamping piece is vertically arranged and radially arranged in the through groove, the upper end of the clamping piece is rotatably connected with the top of the through groove around the tangent line of the circle, the inner side of the lower end of the clamping piece extends into the hollow cavity, the through grooves are arranged at intervals along the circumferential direction of the circle, the clamping pieces and the through grooves are arranged in a one-to-one correspondence manner, the lower part of the outer side surface of the side wall of the clamp barrel is horizontally provided with an annular groove, the annular groove is communicated with the through groove, an elastic ring is horizontally arranged and embedded in the annular groove and abuts against the outer side of the lower end of the clamping piece, the top plate is horizontally arranged on the top end of the clamp barrel, the vertical shaft is arranged at the central position of the top plate, and a driving device is connected with the vertical shaft for driving the vertical shaft to horizontally rotate, therefore, the novel LED lamp is ingenious in design, simple in structure, simple and convenient to manufacture, low in cost and suitable for large-scale popularization and application.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description and appended drawings, wherein like reference numerals refer to corresponding parts throughout the several views, and wherein like reference numerals refer to like parts throughout the several views.

Drawings

FIG. 1 is a perspective view of an embodiment of the mechanical mechanism for opening and closing the cover of a screw sample tube according to the present invention.

Fig. 2 is a schematic front view of the embodiment shown in fig. 1.

Fig. 3 is a schematic left side view of the embodiment shown in fig. 1.

Fig. 4 is a schematic top view of the embodiment shown in fig. 1.

FIG. 5 is a front cross-sectional schematic view of the embodiment shown in FIG. 1.

Fig. 6 is a perspective view of the structure of the tube cap clamp of the embodiment shown in fig. 1.

FIG. 7 is a perspective view of the embodiment of the tube cover clamp shown in FIG. 1 with the outer housing removed.

Fig. 8 is a perspective view of the jaws of the tube cover clamp configuration of the embodiment shown in fig. 1.

Fig. 9 is a perspective view of the quick-change locking mechanism of the embodiment shown in fig. 1.

Fig. 10 is a perspective view of the embodiment of fig. 1 with the locking collar removed from the quick change locking arrangement.

FIG. 11 is a perspective view of the assembly of the intermediate flexible shaft structure, the upper settable torque structure and the rotary drive structure of the particular embodiment shown in FIG. 1.

FIG. 12 is a perspective view of the assembly of the intermediate flexible shaft structure, the upper torque settable structure and the rotary drive structure of the embodiment shown in FIG. 1 with the cartridge bearing mount removed.

(symbol description)

1, a pipe cover clamp structure; 2, clamping the cylinder; 3, clamping pieces; 4, an elastic ring; 5 a top plate; 6, vertical axis; 7 a hollow cavity; 8 through grooves; 9 an annular groove; 10, accommodating grooves; 11 an outer housing; 12 the locking structure is fast and easy to change; 13 butting the transmission shaft; 14 a first bead; 15 a first elastic member; 16 locking the shaft sleeve; 17, an annular limiting groove; 18 circular holes; 19 a limiting hole; 20 a middle elastic shaft structure; 21 a drive shaft; 22 an upper settable torque structure; 23 a rotation transmission structure; 24 belt wheels; 25 belt wheel shaft; 26 cylinder bearing seats; 27 an annular shim; 28 second beads; 29 lower limiting flange; 30, an upper limiting flange; 31 a third elastic member; 32 a first bearing; 33 a second bearing; 34 a third bearing; 35 a second elastic member; 36 positioning pins; 37 vertical shaft holes; 38 positioning holes; 39 vertical limit groove.

Detailed Description

In order to clearly understand the technical contents of the present invention, the following examples are given in detail.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 12, in an embodiment of the present invention, a mechanical mechanism for opening and closing a screw sample tube comprises a tube cap clamp structure 1 and a driving device (not shown), wherein:

the pipe cover clamp structure 1 comprises a clamp barrel body 2, clamping pieces 3, an elastic ring 4, a top plate 5 and a vertical shaft 6, wherein the clamp barrel body 2 is vertically arranged, the clamp barrel body 2 is provided with a hollow cavity 7, the side wall of the clamp barrel body 2 is provided with a through groove 8 along the radial direction of the circle where the side wall of the clamp barrel body 2 is located, the through groove 8 is communicated with the hollow cavity 7, the clamping pieces 3 are vertically arranged and radially arranged in the through groove 8, the upper end of the clamping pieces 3 is wound around the tangent line of the circle to be rotatably connected with the top of the through groove 8, the inner side of the lower end of the clamping pieces 3 extends into the hollow cavity 7, the number of the through grooves 8 is multiple, the through grooves 8 are arranged at intervals along the circumferential direction of the circle, the number of the clamping pieces 3 is the same as that of the through grooves 8, and the clamping pieces 3 and the through grooves 8 are arranged in a one-to-one correspondence manner, the lower part level of the lateral surface of anchor clamps barrel 2's lateral wall be provided with annular groove 9, annular groove 9 intercommunication lead to groove 8, 4 levels of elastic ring set up and inlay and establish in annular groove 9 and support and lean on the outside of the lower extreme of clamping piece 3, 5 levels of roof set up on the top of anchor clamps barrel 2, vertical axis 6 sets up on the central point of roof 5 puts, drive arrangement connects vertical axis 6 is used for the drive 6 horizontal rotation of vertical axis.

The resilient ring 4 may be any suitable resilient ring, and in a specific embodiment of the utility model, the resilient ring 4 is an O-spring.

The through grooves 8 are spaced from each other along the circumferential direction of the circle, and may be spaced from each other uniformly, or may not be spaced from each other uniformly, please refer to fig. 1 and fig. 5 to 7, in a specific embodiment of the present invention, the through grooves 8 are spaced from each other uniformly along the circumferential direction of the circle.

The number of the through grooves 8 can be determined according to needs, preferably equal to or greater than 3, please refer to fig. 1 and fig. 5 to 7, in an embodiment of the present invention, the number of the through grooves 8 is 6, and the number of the clamping pieces 3 is 6.

The elastic ring 4 abuts against the outer side of the lower end of the clamping piece 3, and any suitable structure can be adopted, as shown in fig. 8, in an embodiment of the present invention, an accommodating groove 10 is provided on the outer side of the lower end of the clamping piece 3, and the elastic ring 4 abuts against the accommodating groove 10.

The thickness of the clip 3 can be determined according to the requirement, preferably 0.3mm to 6mm, and in a specific embodiment of the present invention, the thickness of the clip 3 is 2 mm.

The pipe cap clamp structure 1 may further include any other suitable structure, as shown in fig. 1 to 3 and fig. 5 to 6, in an embodiment of the present invention, the pipe cap clamp structure 1 further includes an outer casing 11, the outer casing 11 is sleeved outside the sidewall of the clamp cylinder 2, and a top end of the outer casing 11 is connected to a top end of the clamp cylinder 2.

The drive means is not any suitable drive means and in a particular embodiment of the utility model the drive means is a drive motor.

The mechanical mechanism for opening and closing the cover of the screw sample tube may further include any other suitable structure, please refer to fig. 1 to 3, 5 and 9 to 10, in an embodiment of the present invention, the mechanical mechanism for opening and closing the cover of the screw sample tube further includes a fast and easy-to-replace locking structure 12, the fast and easy-to-replace locking structure 12 includes a butt-joint transmission shaft 13, a first ball 14, a first elastic member 15 and a locking shaft sleeve 16, the butt-joint transmission shaft 13 is vertically disposed, the vertical shaft 6 is vertically inserted into the lower end of the butt-joint transmission shaft 13 and horizontally and rotatably limited by the lower end of the butt-joint transmission shaft 13, an annular limiting groove 17 is horizontally disposed on the outer side surface of the vertical shaft 6, a circular hole 18 is disposed on the side wall of the lower end of the butt-joint transmission shaft 13, the first ball 14 is located in the circular hole 18 and embedded in the annular limiting groove 17, the quantity of round hole 18 is a plurality of, and is a plurality of round hole 18 encircles vertical axis 6 mutual horizontal interval sets up, the quantity of first ball 14 with the quantity of round hole 18 the same, first ball 14 with round hole 18 one-to-one sets up, the vertical portable cover of locking axle sleeve 16 is established the lateral wall of the lower extreme of butt joint transmission shaft 13 outside and shelter from round hole 18 and support and lean on first ball 14, the vertical setting of first elastic component 15 is located butt joint transmission shaft 13 with between the locking axle sleeve 16 and connect respectively butt joint transmission shaft 13 with locking axle sleeve 16, drive arrangement connects butt joint transmission shaft 13 is used for the drive butt joint transmission shaft 13 horizontal rotation.

The vertical shaft 6 is vertically inserted into the lower end of the butt joint transmission shaft 13 and horizontally and rotatably limited by the lower end of the butt joint transmission shaft 13, and any suitable structure may be adopted, for example, a polygonal cross section is adopted, please refer to fig. 5 and 9 to 10, in a specific embodiment of the present invention, a limiting hole 19 is vertically arranged at the lower end of the butt joint transmission shaft 13, and the cross section of the vertical shaft 6 and the cross section of the limiting hole 19 are both rectangular.

The number of the circular holes 18 can be determined according to the requirement, and in a specific embodiment of the present invention, the number of the circular holes 18 and the number of the first beads 14 are both 6.

The first ball 14 can be a ball made of any suitable material, and in an embodiment of the present invention, the first ball 14 is a steel ball.

The first elastic member 15 may be any suitable elastic member, as shown in fig. 5 and 10, in an embodiment of the present invention, the first elastic member 15 is a cylindrical spring, and the cylindrical spring is sleeved outside a side wall of the lower end of the butt joint transmission shaft 13.

The mechanical mechanism for opening and closing the cover of the screw sample tube may further include any other suitable structure, please refer to fig. 1 to 3, 5 and 9 to 12, in an embodiment of the present invention, the mechanical mechanism for opening and closing the cover of the screw sample tube further includes a middle elastic shaft structure 20, the middle elastic shaft structure 20 includes a transmission shaft 21, a second elastic member 35 and a positioning pin 36, the transmission shaft 21 and the second elastic member 35 are both vertically disposed, the bottom of the transmission shaft 21 is provided with a vertical shaft hole 37, a side wall of the transmission shaft 21 is provided with a positioning hole 38, the positioning hole 38 is communicated with the vertical shaft hole 37, a side wall of the upper end of the butt-joint transmission shaft 13 is provided with a vertical limiting groove 39, the upper end of the butt-joint transmission shaft 13 is vertically movably inserted into the vertical shaft hole 37, the positioning pin 36 is horizontally inserted into the positioning hole 38 and the vertical limiting groove 39, the second elastic element 35 is located between the top wall of the vertical shaft hole 37 and the top of the butt-joint transmission shaft 13 and abuts against the top wall of the vertical shaft hole 37 and the top of the butt-joint transmission shaft 13, respectively, and the driving device is connected with the transmission shaft 21 for driving the transmission shaft 21 to rotate horizontally. The compression buffering of the second elastic member 35 can be adapted to pipe caps with different height differences within a certain range.

The second elastic member 35 can be any suitable elastic member, and referring to fig. 5, in an embodiment of the present invention, the second elastic member 35 is a rectangular spring.

The mechanical mechanism for opening and closing the screw sample tube cover may further include any other suitable structure, as shown in fig. 1 to 3, 5 and 11 to 12, and in an embodiment of the present invention, the mechanical mechanism for opening and closing the screw sample tube cover further includes an upper fixable torque structure 22 and a rotation transmission structure 23, wherein:

the rotary transmission structure 23 comprises a belt wheel 24 and a belt wheel shaft 25, the belt wheel shaft 25 is vertically arranged, the belt wheel 24 is horizontally arranged and sleeved on the upper end of the belt wheel shaft 25, and the driving device is connected with the belt wheel 24 and used for driving the belt wheel 24 to horizontally rotate;

the upper part torque fixable structure 22 comprises a cylinder bearing seat 26, an annular gasket 27, a second ball 28, a lower limiting flange 29, an upper limiting flange 30, a third elastic member 31, a first bearing 32, a second bearing 33 and a third bearing 34, wherein the cylinder bearing seat 26 is vertically arranged, the first bearing 32, the second bearing 33 and the third bearing 34 are horizontally arranged and sequentially arranged in the cylinder bearing seat 26 at intervals from top to bottom, the first bearing 32 and the third bearing 34 are respectively arranged in the upper end and the lower end of the cylinder bearing seat 26, the middle part of the pulley shaft 25 is vertically inserted into the first bearing 32 and the second bearing 33, the annular gasket 27 is horizontally arranged and sleeved on the middle part of the pulley shaft 25, the annular gasket 27 is arranged between the first bearing 32 and the second bearing 33 and respectively abuts against the first bearing 32 and the second bearing 33, the upper limiting flange 30 and the lower limiting flange 29 are both horizontally arranged and sequentially arranged at intervals from top to bottom, the lower limiting flange 29 is sleeved on the outer side surface of the lower end of the pulley shaft 25, the upper limiting flange 30 is sleeved on the outer side surface of the lower end of the pulley shaft 25, the second ball 28 is rotatably arranged on the upper limiting flange 30 and the lower limiting flange 29 and respectively abuts against the upper limiting flange 30 and the lower limiting flange 29, the third elastic part 31 is vertically arranged and is positioned between the second bearing 33 and the upper limiting flange 30 and respectively connected with the second bearing 33 and the upper limiting flange 30, and the upper end of the transmission shaft 21 is vertically inserted into the third bearing 34 and connected with the lower end of the pulley shaft 25.

With the arrangement, the third elastic piece 31 vertically extrudes the upper limiting flange 30, and the upper limiting flange 30 vertically extrudes the lower limiting flange 29 through the second ball 28, so that the torque value can be determined. By adjusting the magnitude of the elastic force of the third elastic member 31 and the compression amount of the third elastic member 31 (for example, by adjusting the thickness of the annular gasket 27), different torque values can be achieved.

The number of the second beads 28 can be determined according to the requirement, and in an embodiment of the present invention, the number of the second beads 28 is 6.

The second ball 28 may be a ball made of any suitable material, and in one embodiment of the present invention, the second ball 28 is a steel ball.

The third elastic member 31 may be any suitable elastic member, and referring to fig. 5 and 12, in an embodiment of the present invention, the third elastic member 31 is a cylindrical spring sleeved on the outer side surface of the lower end of the pulley shaft 25.

When the clamp is used, the barrel bearing seat 26 is fixed at a desired position, a screw sample tube is vertically placed below the clamp barrel 2 of the tube cover clamp structure 1, the tube cover is aligned with the hollow cavity 7 of the clamp barrel 2, then the tube cover is vertically and upwardly inserted into the hollow cavity 7 of the clamp barrel 2, when the tube cover enters the hollow cavity 7, the tube cover pushes the inner side of the lower end of the clamping piece 3 outwards, the clamping piece 3 rotates outwards in the through groove 8, the elastic ring 4 is elastically deformed outwards through the outer side of the lower end of the clamping piece 3, and conversely, the elastic ring 4 presses the outer side of the lower end of the clamping piece 3 inwards, so that the inner side of the lower end of the clamping piece 3 is inserted into a vertical groove of the outer side surface of the tube cover, the tube cover is clamped, and the sizes of most common screw sample tubes on the market can be adapted by adjusting the sizes of the clamping piece 3 and the elastic ring 4.

When the cover needs to be opened and closed, the driving device drives the belt wheel 24 to rotate horizontally to drive the belt wheel shaft 25 to rotate horizontally, and due to the existence of the third elastic piece 31, when the driving force of the driving device is not greater than a set torque value, the driving device cannot drive the belt wheel 24 to rotate horizontally, and further cannot drive the belt wheel shaft 25 to rotate horizontally; when the driving force of the driving device is larger than a set torque value, the driving device can drive the belt pulley 24 to rotate horizontally, so as to drive the belt pulley shaft 25 to rotate horizontally, the lower limiting flange 29 rotates relative to the upper limiting flange 30, the belt pulley shaft 25 drives the butt joint transmission shaft 13 to rotate horizontally through the transmission shaft 21, the clamp barrel body 2 is driven to rotate horizontally through the vertical shaft 6, and finally the pipe cover is driven to rotate horizontally, so that the pipe cover is opened and closed.

When the quick-change pipe cap clamp structure 1 is required, the locking sleeve 16 is pushed upwards, so that the locking sleeve 16 no longer obstructs the circular hole 18 and abuts against the first ball 14, meanwhile, the first elastic element 15 is compressed, at this time, the pipe cap clamp structure 1 can be pulled downwards, the first round bead 14 is pushed to move outwards in the round hole 18 through the annular limiting groove 17 and protrude until the first round bead 14 is separated from the annular limiting groove 17, so that the pipe cover clamp structure 1 can be completely separated from the quick and easy-to-replace locking structure 12, the vertical shaft 6 of another new pipe cover clamp structure 1 is vertically inserted into the lower end of the butt joint transmission shaft 13, the locking shaft sleeve 16 is released at the moment, the locking shaft sleeve 16 is reset under the elastic force of the first elastic piece 15, so that the first round balls 14 are pushed to move inwards in the round holes 18 and are embedded into the annular limiting grooves 17 to shield the round holes 18 again, and the replacement of the pipe cover clamp structure 1 is completed.

Therefore, the mechanical structure provided by the utility model has the advantages that the structure of the clamp for opening, closing the cover and clamping the pipe cover can be replaced quickly, the torque is adjustable, the torque can be fixed, and the clamping pipe cover has the flexible buffering function.

In conclusion, the mechanical mechanism for opening and closing the screw sample tube cover can automatically open and close the cover, is used for solving the problems of low working efficiency and easy cross contamination caused by physical consumption, discomfort of hands and the like during long-time operation, and is ingenious in design, simple in structure, simple and convenient to manufacture, low in cost and suitable for large-scale popularization and application.

It will thus be seen that the objects of the utility model have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments may be modified without departing from the principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the claims.

Claims (10)

1. The utility model provides a mechanical mechanism that is used for screw sample cell switch lid which characterized in that, includes tube cap anchor clamps structure and drive arrangement, wherein:

the pipe cover clamp structure comprises a clamp barrel body, clamping pieces, an elastic ring, a top plate and a vertical shaft, wherein the clamp barrel body is vertically arranged, the clamp barrel body is provided with a hollow cavity, the side wall of the clamp barrel body is provided with through grooves along the radial direction of a circle where the side wall of the clamp barrel body is located, the through grooves are communicated with the hollow cavity, the clamping pieces are vertically arranged and are radially arranged in the through grooves, the upper ends of the clamping pieces are rotatably connected with the top of the through grooves around the tangent line of the circle, the inner sides of the lower ends of the clamping pieces extend into the hollow cavity, the number of the through grooves is multiple, the through grooves are arranged at intervals along the circumferential direction of the circle, the number of the clamping pieces is the same as that of the through grooves, the clamping pieces and the through grooves are arranged in a one-to-one correspondence manner, and the lower parts of the outer side surfaces of the side wall of the clamp barrel body are horizontally provided with annular grooves, the annular groove communicates through the groove, the elastic ring is horizontally arranged and embedded in the annular groove and abutted against the outer side of the lower end of the clamping piece, the top plate is horizontally arranged on the top end of the clamp barrel, the vertical shaft is arranged at the central position of the top plate, and the driving device is connected with the vertical shaft and used for driving the vertical shaft to rotate horizontally.

2. The mechanical mechanism for opening and closing a cover of a threaded sample tube of claim 1, wherein said resilient ring is an O-spring.

3. The mechanical mechanism for opening and closing a screw sample tube of claim 1, wherein the number of through slots is 6, and the number of clamping pieces is 6.

4. The mechanical mechanism for opening and closing a screw sample tube according to claim 1, wherein the tube cap clamp structure further comprises an outer housing, the outer housing is sleeved outside the sidewall of the clamp cylinder, and the top end of the outer housing is connected to the top end of the clamp cylinder.

5. The mechanical mechanism for opening and closing a screw sample tube of claim 1, wherein the driving means is a driving motor.

6. The mechanical mechanism for the screw sample tube switch cover according to claim 1, further comprising a fast and easy-to-replace locking structure, wherein the fast and easy-to-replace locking structure comprises a butt-joint transmission shaft, a first ball, a first elastic member and a locking shaft sleeve, the butt-joint transmission shaft is vertically arranged, the vertical shaft is vertically inserted into the lower end of the butt-joint transmission shaft and horizontally and rotatably limited by the lower end of the butt-joint transmission shaft, an annular limiting groove is horizontally arranged on the outer side surface of the vertical shaft, a circular hole is arranged on the side wall of the lower end of the butt-joint transmission shaft, the first ball is located in the circular hole and embedded in the annular limiting groove, the number of the circular holes is multiple, the circular holes are horizontally spaced around the vertical shaft, and the number of the first ball is the same as the number of the circular holes, first ball with the round hole one-to-one sets up, the vertical portable cover of locking axle sleeve is established the lateral wall of the lower extreme of butt joint transmission shaft outside and shelter from the round hole just supports and lean on first ball, the vertical setting of first elastic component is located the butt joint transmission shaft with just connect respectively between the locking axle sleeve the butt joint transmission shaft with the locking axle sleeve, drive arrangement connects the butt joint transmission shaft is used for the drive the butt joint transmission shaft horizontal rotation.

7. The mechanical mechanism for opening and closing a screw sample tube as claimed in claim 6, wherein said first elastic member is a cylindrical spring, and said cylindrical spring is sleeved outside the side wall of the lower end of said butt-joint transmission shaft.

8. The mechanical mechanism for a screw sample tube switch cover according to claim 6, further comprising an intermediate elastic shaft structure, wherein the intermediate elastic shaft structure comprises a transmission shaft, a second elastic member and a positioning pin, the transmission shaft and the second elastic member are vertically disposed, a vertical shaft hole is disposed at the bottom of the transmission shaft, a positioning hole is disposed on a side wall of the transmission shaft, the positioning hole communicates with the vertical shaft hole, a vertical limiting groove is disposed on a side wall of an upper end of the butt-joint transmission shaft, the upper end of the butt-joint transmission shaft is vertically movably inserted into the vertical shaft hole, the positioning pin is horizontally inserted into the positioning hole and the vertical limiting groove, the second elastic member is located between a top wall of the vertical shaft hole and a top portion of the butt-joint transmission shaft and abuts against the top wall of the vertical shaft hole and the top portion of the butt-joint transmission shaft respectively, the driving device is connected with the transmission shaft and used for driving the transmission shaft to rotate horizontally.

9. The mechanical mechanism for screw sample tube opening and closing cap of claim 8, further comprising an upper torque fixable structure and a rotational transmission structure, wherein:

the rotary transmission structure comprises a belt wheel and a belt wheel shaft, the belt wheel shaft is vertically arranged, the belt wheel is horizontally arranged and sleeved at the upper end of the belt wheel shaft, and the driving device is connected with the belt wheel and used for driving the belt wheel to rotate horizontally;

the upper part torque-fixable structure comprises a cylinder bearing seat, an annular gasket, a second ball, a lower limiting flange, an upper limiting flange, a third elastic piece, a first bearing, a second bearing and a third bearing, wherein the cylinder bearing seat is vertically arranged, the first bearing, the second bearing and the third bearing are horizontally arranged and are sequentially arranged in the cylinder bearing seat at intervals from top to bottom, the first bearing and the third bearing are respectively positioned in the upper end and the lower end of the cylinder bearing seat, the middle part of a pulley shaft is vertically inserted in the first bearing and the second bearing, the annular gasket is horizontally arranged and sleeved on the middle part of the pulley shaft, the annular gasket is positioned between the first bearing and the second bearing and respectively abuts against the first bearing and the second bearing, the upper limiting flange and the lower limiting flange are horizontally arranged and sequentially arranged at intervals from top to bottom, the lower limiting flange is sleeved on the outer side face of the lower end of the pulley shaft, the upper limiting flange is sleeved on the outer side face of the lower end of the pulley shaft, the second round ball is rotatably arranged on the upper limiting flange and the lower limiting flange and is respectively abutted against the upper limiting flange and the lower limiting flange, the third elastic piece is vertically arranged and is positioned between the second bearing and the upper limiting flange and is respectively connected with the second bearing and the upper limiting flange, and the upper end of the transmission shaft is vertically inserted in the third bearing and is connected with the lower end of the pulley shaft.

10. The mechanical mechanism for opening and closing a screw sample tube of claim 9, wherein said third resilient member is a cylindrical spring, said cylindrical spring being fitted over an outer side surface of a lower end of said pulley shaft.

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