CN211292924U - Blood coagulation testing device - Google Patents
Blood coagulation testing device Download PDFInfo
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- CN211292924U CN211292924U CN201921017170.5U CN201921017170U CN211292924U CN 211292924 U CN211292924 U CN 211292924U CN 201921017170 U CN201921017170 U CN 201921017170U CN 211292924 U CN211292924 U CN 211292924U
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Abstract
The utility model discloses a blood coagulation testing arrangement, include: the device comprises a mounting frame, a sample cup rotating and lifting mechanism, a cam wedge-shaped micro-displacement mechanism, a position adjusting mechanism, a blood detection device and an oscillating mechanism. The utility model discloses a blood coagulation testing arrangement drives the rotatory elevating system of sample cup through oscillating mechanism and reciprocates rotatoryly to carry out the rule oscillation to the blood sample in the sample cup, drive the probe on the blood detection device through the little displacement actuating mechanism of cam wedge shape and carry out the reciprocal little displacement actuation of vertical direction, with the physiology process of simulating the internal blood coagulation of human body, thereby guarantee the accuracy of detection and analysis result. The position of the probe on the blood detection device is adjusted through the position adjusting mechanism, so that the probe is aligned to the center of the sample cup, certain consistency of measurement is kept, and the accuracy of the measurement result can be improved.
Description
Technical Field
The utility model relates to a blood coagulation analysis technical field, in particular to blood coagulation testing arrangement.
Background
Coagulation, i.e., blood coagulation, is a process of changing blood from a fluid state to a gel state in which blood cannot flow, and is an important link of physiological hemostasis. The existing hemodynamics analysis device adopts a measurement mode of freely hanging a probe, a cup head of a measuring cup is fixed on the probe, the cup head is not easy to keep upright when being put into a cup body, the probe in a hanging state is extremely easy to be interfered by external vibration and impact, and the dimension of measurement parameters is only limited to one axis; in addition, the conventional hemodynamic analysis apparatus has the defects of low measurement accuracy, poor stability, high manufacturing cost, single measurement dimension, and the like, and thus cannot meet the requirements of clinical blood coagulation detection and analysis.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a blood coagulation testing arrangement.
In order to solve the technical problem, the utility model discloses a technical scheme is: a coagulation test device comprising: the device comprises a mounting frame, a sample cup rotating and lifting mechanism, a cam wedge-shaped micro-displacement mechanism, a position adjusting mechanism, a blood detection device and an oscillating mechanism;
the sample cup rotary lifting mechanism is arranged on the mounting rack and used for placing a sample cup and realizing manual lifting of the sample cup;
the blood detection device is arranged on the position adjusting mechanism, and the position adjusting mechanism is used for adjusting the position of a probe on the blood detection device to align the probe to the center of the sample cup;
the cam wedge-shaped micro-displacement mechanism is arranged on the mounting frame, the position adjusting mechanism is arranged on the cam wedge-shaped micro-displacement mechanism, and the cam wedge-shaped micro-displacement mechanism is used for driving the blood detection device to perform reciprocating displacement in the vertical direction;
the oscillating mechanism is arranged on the mounting frame and used for driving the sample cup rotating and lifting mechanism to rotate in a reciprocating manner.
Preferably, the mounting bracket comprises a lower substrate, a stand column arranged on the lower substrate, an upper substrate arranged at the upper end of the stand column, a micro-displacement mechanism adapter plate arranged on the upper substrate, a level gauge and a temperature control meter arranged on the upper substrate, a main control device arranged on the lower substrate and a pad foot arranged at the bottom of the lower substrate.
Preferably, the sample cup rotating and lifting mechanism comprises a lifting guide rod fixedly connected to the lower substrate, a ball head plunger seat capable of being sleeved on the lifting guide rod in a vertically sliding manner, a linear bearing capable of being sleeved on the lifting guide rod in a vertically sliding manner and fixedly connected with the upper end face of the ball head plunger seat, a lifting platform fixedly connected to the linear bearing, a rotating platform rotatably arranged on the lifting platform, a sample cup holder arranged on the rotating platform and a sample cup holder arranged on the sample cup holder and used for placing the sample cup;
the middle part of the ball-head plunger seat is provided with a guide hole for the lifting guide rod to pass through, the side periphery of the ball-head plunger seat is provided with a plurality of plunger holes penetrating through the guide hole, a ball-head plunger is inserted in the plunger holes, and the inner end of the ball-head plunger is used for jacking the outer wall of the lifting guide rod.
Preferably, two sides of the rotating platform are fixedly connected with 2 groups of rotating push claws, each rotating push claw comprises a first push claw and a second push claw which are arranged at intervals, the mutually facing side walls of the first push claw and the second push claw are respective inner side walls, and the inner side walls on the second push claws are provided with inclined planes and clamping grooves.
Preferably, the cam wedge micro-displacement actuating mechanism comprises a bottom plate arranged on the micro-displacement mechanism adapter plate, a first motor arranged on the bottom plate, an end face cam in driving connection with the first motor, a driven pin inserted in an end face groove formed in the end face cam in a matched manner, a lower wedge block fixedly connected with the driven pin and slidably connected with the bottom plate, an upper wedge block slidably arranged on the lower wedge block through a wedge face, a linear bearing fixedly connected to the bottom of the upper wedge block, and a guide shaft, the upper end of the guide shaft is inserted in the linear bearing, and the lower end of the guide shaft is fixedly connected with the bottom plate.
Preferably, the position adjusting mechanism comprises an outer sleeve connected with the upper wedge block, a connecting rod inserted in the outer sleeve, a plurality of adjusting assemblies arranged on the outer sleeve and used for adjusting the position of the connecting rod in the outer sleeve, and a pull ring assembly arranged on the outer sleeve and used for locking the connecting rod; the blood detection device is connected to the lower end of the connecting rod;
the lower wedge-shaped block is connected with the bottom plate in a sliding way through a plane guide rail; the upper end surface of the lower wedge block is provided with a first wedge surface, the lower end surface of the upper wedge block is provided with a second wedge surface, and the second wedge surface is slidably connected with the first wedge surface through an inclined surface guide rail;
the position adjusting mechanism is used for adjusting the position of the blood detection device on the connecting rod, and the micro-displacement actuating mechanism is used for realizing the reciprocating displacement of the blood detection device on the connecting rod in the vertical direction.
Preferably, the side part of the outer sleeve is provided with a plurality of adjusting threaded holes, the adjusting assembly comprises an adjusting nut which is inserted into the adjusting threaded holes in a matching manner, an adjusting screw which is inserted into the adjusting nut in a matching manner and a locking nut which is arranged on the adjusting screw, and the inner end of the adjusting screw is provided with a jacking ball which is used for jacking the outer wall of the connecting rod; a first copper sheet spring is further arranged on the outer sleeve and on the opposite side of the adjusting threaded hole;
a copper sheet slotted hole for arranging the copper sheet spring is formed in the side wall of the outer sleeve, the copper sheet spring is a folded copper sheet and comprises a vertical sheet part fixedly connected to the copper sheet slotted hole and an elastic inclined sheet part connected with the vertical sheet part, and the elastic inclined sheet part extends into the outer sleeve and is pressed on the outer wall of the connecting rod;
the pull ring assembly comprises a pull ring seat fixedly connected to the outer wall of the outer sleeve, a pull rod which is inserted into a pull rod hole formed in the pull ring seat in a telescopic mode, a pull ring cap connected to the outer end of the pull rod, a spring arranged on the pull rod in a sleeved mode, and a pull ring connected to the inner end of the pull rod, one end of the spring is connected with the pull ring seat, the other end of the spring is connected with the pull ring cap, and the pull ring is arranged on the connecting rod in a sleeved mode.
Preferably, the sample cup rotating and lifting mechanism, the cam wedge-shaped micro-displacement mechanism, the position adjusting mechanism and the blood detection device comprise 2 groups which are symmetrically arranged;
the oscillating mechanism comprises a second motor fixedly connected to the upper substrate, a cam in driving connection with the second motor, a rotatable connection part and two cam followers, wherein the two cam followers are arranged on the upper substrate and are tightly attached to two sides of the cam, the two rocker rods are respectively connected to the two cam followers, the tension spring is connected between the two rocker rods, and the two rotating mechanisms are respectively connected to the two rocker rods.
Preferably, the two rotating mechanisms are used for respectively driving the two groups of sample cup rotating and lifting mechanisms to rotate in a reciprocating manner, and each rotating mechanism comprises a rotating ring fixedly connected with the oscillating bar and rotatably sleeved on the periphery of the lower flange, two special-shaped guide rods fixedly connected to the lower part of the rotating ring and two second copper sheet springs fixedly connected to the two special-shaped guide rods respectively.
Preferably, the second copper sheet spring comprises a fixed copper sheet part fixedly connected to the lower part of the special-shaped guide rod and an elastic copper sheet part connected to the bottom of the fixed copper sheet part, and the tail end of the elastic copper sheet part is rotatably connected with a spring shaft;
the lower part of the special-shaped guide rod and the second copper sheet spring on the special-shaped guide rod are clamped between the first push claw and the second push claw on the rotating platform, and the special-shaped guide rod comprises the following specific components: the special-shaped guide rod is attached to the inner wall of the first push claw in a propping mode, the elastic copper sheet part is attached to the inner wall of the second push claw in an elastic propping mode, and the spring shaft at the tail end of the elastic copper sheet part is clamped in the clamping groove in the inner wall of the second push claw.
The utility model has the advantages that:
the utility model discloses a blood coagulation testing arrangement drives the rotatory elevating system of sample cup through oscillating mechanism and reciprocates rotatoryly to carry out the rule oscillation to the blood sample in the sample cup, drive the probe on the blood detection device through the little displacement actuating mechanism of cam wedge shape and carry out the reciprocal little displacement actuation of vertical direction, with the physiology process of simulating the internal blood coagulation of human body, thereby guarantee the accuracy of detection and analysis result. The position of the probe on the blood detection device is adjusted through the position adjusting mechanism, so that the probe is aligned to the center of the sample cup, the measurement is kept consistent, and the accuracy of the measurement result can be improved;
the utility model realizes the high precision reciprocating micro displacement of the mechanism by adopting the cam wedge micro displacement actuating mechanism, can realize the high precision displacement output by the common motor with low cost, and can greatly reduce the cost of the device on the premise of meeting the precision; the utility model can effectively change the stroke of reciprocating motion in the vertical direction by changing the slope proportion of the wedge block or the lead of the end face cam; the utility model discloses very high axis positioning accuracy and rotation accuracy have.
Drawings
FIG. 1 is a schematic structural view of a blood coagulation test device according to the present invention;
fig. 2 is a schematic structural view of the mounting frame of the present invention;
FIG. 3 is a schematic structural view of the rotary elevating mechanism of the specimen cup of the present invention;
FIG. 4 is a schematic cross-sectional view of the rotary elevating mechanism of the sample cup of the present invention;
fig. 5 is an exploded view of the sample cup rotary elevating mechanism of the present invention;
FIG. 6 is a schematic structural view of a cam wedge micro-displacement actuator according to the present invention;
fig. 7 is a schematic structural view of another view angle of the cam wedge micro-displacement actuating mechanism of the present invention;
FIG. 8 is a cross-sectional view of the cam wedge micro-displacement actuator mechanism of the present invention;
fig. 9 is a schematic structural view of the end cam of the present invention;
fig. 10 is a schematic structural view of the position adjustment mechanism of the present invention;
fig. 11 is a schematic cross-sectional structural view of an adjusting assembly of the present invention;
FIG. 12 is a cross-sectional structural view of the pull ring assembly of the present invention;
fig. 13 is a schematic structural view of an outer sleeve of the present invention;
FIG. 14 is a schematic structural view of the position adjustment mechanism of the present invention in cooperation with the blood detection device;
fig. 15 is a schematic structural view of the oscillating mechanism of the present invention;
fig. 16 is an exploded view of the oscillating mechanism of the present invention.
Description of reference numerals:
1-a mounting frame; 10-lower substrate; 11-upright post; 12-an upper substrate; 13-micro displacement mechanism adapter plate; 14-a level gauge; 15-temperature control meter; 16-a master control device; 17-foot pad; 18-a lower flange;
2-the sample cup rotates the lifting gearing; 20-lifting guide rod; 21-ball plunger seat; 22-linear bearing; 23-lifting platform; 24-a rotating platform; 25-sample cup holder; 26-sample cup holder; 27-taking the cup push rod; 28-taking a cup pressure spring; 29-taking a cup blocking piece; 200-a shaft end flange; 210-a pilot hole; 211-plunger hole; 212-ball plunger; 240-rotating the push pawl; 241-a first pusher jaw; 242 — a second pusher jaw; 243-inclined surface; 244-card slots; 245 — a rotational bearing; 270-groove;
3-cam wedge micro-displacement actuating mechanism; 30-a bottom plate; 31 — a first motor; 32-end cam; 33-a follower pin; 34-lower wedge block; 35-upper wedge block; 36-linear bearings; 37-a guide shaft; 300, a coupler; 301-a bearing assembly; 302-plane guide rail; 320-a transmission shaft; 321-end face grooves; 340-a first wedge-facet; 341-ramp guide; 350-a second wedge face;
4-position adjusting mechanism; 41-baffle plate; 42-an outer sleeve; 43-a connecting rod; 44-an adjustment assembly; 45-a tab assembly; 46-a first copper spring; 47-copper sheet slotted hole; 420-adjusting the threaded hole; 440-adjusting nut; 441-adjusting screws; 442-a locking nut; 443-heading ball; 444 — a first upper adjustment assembly; 445 — first lower adjustment assembly; 446 — a second upper adjustment assembly; 447 — a second lower adjustment assembly; 450-a pull ring seat; 451-a pull rod; 452 — a tab cap; 453-spring; 454-a pull ring; 460-vertical slice; 461-elastic inclined piece part;
5, an oscillating mechanism; 50-a second motor; 51-a cam; 52-a cam follower; 53-swing link; 54-tension spring; 55-a rotating mechanism; 550-rotating; 551-special-shaped guide rod; 552-a second copper spring; 553-fixing the copper sheet part; 554-a resilient copper sheet portion; 555-spring shaft;
6-a blood detection device; 60-probe;
7-sample cup.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 16, a coagulation test device of the present embodiment includes: the device comprises a mounting frame 1, a sample cup rotary lifting mechanism 2, a cam wedge-shaped micro-displacement mechanism 3, a position adjusting mechanism 4, a blood detection device 6 and an oscillating mechanism 5;
the sample cup rotary lifting mechanism 2 is arranged on the mounting rack 1 and is used for placing a sample cup 7 and realizing manual lifting of the sample cup 7;
the blood detection device 6 is arranged on the position adjusting mechanism 4, and the position adjusting mechanism 4 is used for adjusting the position of the probe 60 on the blood detection device 6 to make the probe 60 align with the center of the sample cup 7;
the cam wedge-shaped micro-displacement mechanism 3 is arranged on the mounting frame 1, the position adjusting mechanism 4 is arranged on the cam wedge-shaped micro-displacement mechanism 3, and the cam wedge-shaped micro-displacement mechanism 3 is used for driving the blood detection device 6 to perform reciprocating displacement in the vertical direction;
the oscillating mechanism 5 is arranged on the mounting rack 1 and used for driving the sample cup rotary lifting mechanism 2 to rotate in a reciprocating manner.
The blood detection device 6 is used for detecting the mechanical parameters of blood, and conventional devices such as a blood coagulation detection sensor disclosed in patent CN106153439B can be adopted. The utility model discloses in, carry out the regular oscillation through the blood sample of oscillating mechanism 5 in to sample cup 7, drive probe 60 on the blood detection device 6 through cam wedge micrometric displacement actuating mechanism 3 and carry out the reciprocal micrometric displacement of vertical direction and actuate to simulate the internal blood coagulation's of human physiology process, thereby guarantee the accuracy of detection and analysis result.
Referring to fig. 1, in the present embodiment, the sample cup rotary lifting mechanism 2, the cam wedge micro-displacement mechanism 3, the position adjusting mechanism 4, and the blood detection device 6 all include 2 sets symmetrically disposed on the mounting frame 1; the cam wedge-shaped micro-displacement mechanism 3, the position adjusting mechanism 4, the blood detection device 6 and the sample cup rotary lifting mechanism 2 are sequentially arranged from top to bottom, the oscillating mechanism 5 drives the two groups of sample cup rotary lifting mechanisms 2 to rotate in a reciprocating manner, the 2 groups of cam wedge-shaped micro-displacement mechanisms respectively drive the 2 groups of blood detection devices to perform reciprocating displacement in the vertical direction, and the probes 60 on the 2 groups of blood detection devices extend into the 2 sample cups to perform coagulation test analysis, so that the detection of the two groups of blood samples can be simultaneously realized.
Referring to fig. 2, the mounting frame 1 includes a lower substrate 10, a pillar 11 disposed on the lower substrate 10, an upper substrate 12 disposed on an upper end of the pillar 11, a micro-displacement mechanism adapter plate 13 disposed on the upper substrate 12, a level gauge 14 and a temperature control meter 15 disposed on the upper substrate 12, a main control device 16 disposed on the lower substrate 10, and a foot pad 17 disposed at a bottom of the lower substrate 10. The mounting bracket 1 is also provided with a lower flange 18. The mounting frame 1 serves as a framework of the whole device and provides positioning and assembling space. The spirit level 14 is used for detecting whether laying of the system is horizontal and can be adjusted by the foot pad 17, the temperature control meter 15 is used for monitoring and controlling the temperature of the sample cup (the temperature of the sample cup is detected through the temperature sensor, the temperature is displayed through the temperature control meter 15, the heating wires on the sample cup holder 26 can be controlled through the temperature control meter 15, so that the heating and heat preservation control of the sample can be realized), and the main control device 16 mainly provides power for the system, collects test signals and communicates.
The sample cup rotary lifting mechanism 2 has the main functions of manually lifting the sample cup 7, enabling the probe 60 on the blood detection device 6 to extend into the blood in the sample cup 7 for detection, and simultaneously receiving the thrust provided by the oscillating mechanism 5 to enable the sample cup 7 to realize reciprocating rotary motion with higher precision.
Referring to fig. 3-5, the sample cup rotating and lifting mechanism 2 includes a lifting guide rod 20 fixed on the lower substrate 10, a ball plunger seat 21 slidably sleeved on the lifting guide rod 20 up and down, a linear bearing 22 slidably sleeved on the lifting guide rod 20 up and down and fixedly connected with the upper end face of the ball plunger seat 21, a lifting platform 23 fixedly connected on the linear bearing 22, a rotating platform 24 rotatably disposed on the lifting platform 23, a sample cup holder 25 disposed on the rotating platform 24, and a sample cup holder 26 disposed on the sample cup holder 25 and used for holding a sample cup. The sample cup holder 26 is further provided with a heating wire for heating and insulating the sample.
The middle part of the ball plunger seat 21 is provided with a guide hole 210 for the lifting guide rod 20 to pass through, the side circumference of the ball plunger seat is provided with a plurality of plunger holes 211 penetrating through the guide hole 210, a ball plunger 212 is inserted into the plunger holes 211, and the inner end of the ball plunger 212 is used for jacking the outer wall of the lifting guide rod 20.
In this embodiment, the lifting platform 23 is provided with a hole in the middle, and the rotary platform 24 is rotatably disposed in the hole through the rotary bearing 245. The sample cup holder 25 is made of a plastic material with a good heat preservation effect, and can preserve heat of a sample. The sample cup holder 25 is placed in the center hole of the rotary platform 24 and fixed with screws. The linear bearing 22 is driven into the lifting platform 23. The guide rod is inserted into the linear bearing 22 from the top down. The ball plunger seat 21 is inserted into the guide rod and fastened down and up to the end face of the linear bearing 22 and screwed into the ball plunger 212. The lower end of the elevation guide bar 20 is fixed to the lower substrate 10 by a shaft end flange 200. Four ball plungers 212 are arranged around the ball plunger seat 21, and the ball plungers 212 press against the side wall of the lifting guide rod 20 to provide a certain friction force, so that the lifting platform 23 can move up and down smoothly and can be braked at any position without sliding down. When the lifting platform is used, the lifting platform 23 falls down, a sample is added into the sample cup, and then the lifting platform 23 is lifted to the uppermost limiting end face of the guide rod. At the same time, the movable ball of the ball plunger 212 is engaged in the groove 270 of the guide rod, so that the lifting platform 23 and the components thereon can be fixed and slide down after slight force is applied. At this time, the spring shaft 555 in the oscillating mechanism 5 is in contact with the rotating platform 24, and when the spring shaft 555 in the oscillating mechanism 5 pushes, the rotating platform 24 can realize high-precision small-angle reciprocating circular motion under the constraint of the rotating bearing 245.
In a further preferred embodiment, the sample cup rotary lifting mechanism 2 further comprises a cup taking push rod 27, a cup taking pressure spring 28 and a cup taking baffle 29. The sample cup holder 25 and the sample cup holder 26 are both provided with central openings, the sample cup holder 26 is arranged in the central opening of the sample cup holder 25, the sample cup 7 is arranged in the central opening of the sample cup holder 26, the cup taking pressure spring 28 is arranged in the central opening of the sample cup holder 25 and is positioned below the sample cup, and the upper end surface of the cup taking pressure spring 28 is pressed against the lower end surface of the sample cup holder 26; the sample cup holder 26 has a central opening in which the sample cup 7 is disposed; the cup taking push rod 27 penetrates through the cup taking pressure spring 28 and sequentially penetrates through the central open holes of the sample cup holder 25 and the sample cup holder 26 from bottom to top to be in contact with the bottom of the sample cup, and the cup taking baffle 29 is clamped in the groove 270 on the cup taking push rod 27 and is abutted to the lower end of the cup taking pressure spring 28, so that the cup taking pressure spring 28 is clamped between the lower surface of the sample cup holder 26 and the cup taking baffle 29. When the cup taking push rod 27 is pushed from bottom to top, the cup taking push rod 27 moves upwards to push the sample cup 7 out of the sample cup holder 26, meanwhile, the cup taking baffle 29 extrudes the bottom of the cup taking pressure spring 28 upwards to compress the cup taking pressure spring, and when the pushing force on the cup taking push rod 27 is removed, the rebound force of the cup taking pressure spring 28 acts to enable the cup taking push rod 27 to move downwards to return to the original position.
Two sides of the rotating platform 24 are fixedly connected with 2 sets of rotating push claws 240, each rotating push claw 240 comprises a first push claw 241 and a second push claw 242 which are arranged at intervals, the mutually facing side walls of the first push claw 241 and the second push claw 242 are respective inner side walls, and the inner side walls on the second push claw 242 are provided with inclined surfaces 243 and clamping grooves 244. The rotary pushing claw 240 is used for receiving the rotary power of the oscillating mechanism 5 to drive the rotary platform 24 to rotate back and forth.
Referring to fig. 6-9, the cam wedge-shaped micro-displacement actuating mechanism 3 includes a bottom plate 30 disposed on the micro-displacement mechanism adapter plate 13, a first motor 31 disposed on the bottom plate, an end cam 32 drivingly connected to the first motor 31, a driven pin 33 cooperatively inserted in an end groove 321 formed on the end cam 32, a lower wedge block 34 fixedly connected to the driven pin 33 and slidably connected to the bottom plate 30 at a bottom surface thereof, an upper wedge block 35 slidably disposed on the lower wedge block 34 through a wedge surface, a linear bearing 36 fixedly connected to a bottom of the upper wedge block 35, and a guide shaft 37 having an upper end inserted in the linear bearing 36 and a lower end fixedly connected to the bottom plate 30.
The end face cam 32 is driven to rotate by the first motor 31, and the lower wedge block 34 is driven to slide on the bottom plate 30 in a reciprocating manner under the matching of the end face groove 321 and the driven pin 33; under the limitation of the guide shaft 37, the reciprocating sliding of the lower wedge block 34 in the horizontal plane drives the upper wedge block 35 to reciprocate up and down in the vertical plane, so as to drive the position adjusting mechanism 4 to reciprocate up and down.
In one embodiment, a coupling 300 is connected to the output shaft of the first motor 31, and the end cam 32 is connected to the output end of the coupling 300 through a transmission shaft 320; the transmission shaft 320 is further provided with a bearing assembly 301, and the bearing assembly 301 is connected with the bottom plate 30. Bearing assembly 301 constrains the spatial position of face cam 32 on drive shaft 320 and ensures a higher degree of rotational accuracy. The groove of the end cam 32 is determined according to the relationship between the reciprocating path to be realized by the micro-displacement actuating mechanism 3 and time, and the end groove 321 is designed to be rolled into a cylinder according to the curve of the single-period reciprocating motion along with the change of the angle. That is, the circumferential development of the face groove 321 of the face cam 32 is a movement path of one cycle of the reciprocating movement.
Wherein the lower wedge blocks 34 are slidably connected with the bottom plate 30 through a plane guide rail 301; the upper end face of the lower wedge block 34 is provided with a first wedge face 340, the lower end face of the upper wedge block 35 is provided with a second wedge face 350, and the second wedge face 350 is slidably connected with the first wedge face 340 through a slope guide 341. In a more preferred embodiment, the flat rail 301 and the ramp rail 341 are cross roller rails.
In the above embodiment, the cam wedge micro-displacement actuating mechanism 3 works according to the following principle: the first motor 31 drives the end face cam 32 to rotate through the coupler 300 and the transmission shaft 320, the end face groove 321 drives the driven pin 33 to horizontally reciprocate under the matching of the end face groove 321 and the driven pin 33, and then the driven pin 33 drives the lower wedge block 34 to horizontally reciprocate on the bottom plate 30; under the limitation of the guide shaft 37, the reciprocating sliding of the lower wedge block 34 in the horizontal plane drives the upper wedge block 35 to reciprocate up and down in the vertical plane, so as to drive the position adjusting mechanism 4 connected with the upper wedge block 35 to reciprocate up and down. The upper wedge 35 and the lower wedge 34 form a guide rail pair via the inclined guide rail 341, that is, the upper wedge 35 moves along the inclined surface of the lower wedge 34 relatively. The linear bearing 36 is fixed on the upper wedge 35 and slides relative to the guide shaft 37 in the axial direction of the guide shaft 37, and the guide shaft 37 is fixed on the bottom plate 30 and ensures good perpendicularity. This limits the upper wedge 35 to move vertically only in the axial direction of the guide shaft 37. When the lower wedge block 34 moves horizontally, the upper wedge block 35 moves relatively along the inclined surface with respect to the lower wedge block 34, and on the other hand, due to the existence of the guide shaft 37, the upper wedge block 35 has to move vertically, so that the upper wedge block 35 can only be jacked up or pulled down by the lower wedge block 34 without being displaced horizontally by the lower wedge block 34. The slope of the lower wedge block 34 can be designed to be 1:5, 1:10, 1:20, etc. in proportion according to the precision requirement and the stroke requirement. For example, when the lower wedge block 34 moves 10 unit lengths in the horizontal direction, the upper wedge block 35 rises or falls 1 unit length in the vertical direction, and the error in the horizontal direction due to the transmission is also reduced by 10 times in the vertical direction. Thereby realizing high-precision reciprocating linear micro displacement in the vertical direction.
Referring to fig. 10 to 14, the position adjustment mechanism 4 includes an outer sleeve 42 connected to the upper wedge block 35, a connecting rod 43 inserted in the outer sleeve 42, a plurality of adjustment assemblies 44 provided on the outer sleeve 42 for adjusting the position of the connecting rod 43 in the outer sleeve 42, and a tab assembly 45 provided on the outer sleeve 42 for locking the connecting rod 43; the blood test device 6 is connected to the lower end of the connecting rod 43.
The upper base plate 23 of the mounting bracket 1 is further provided with a lower flange 18, and the lower end of the outer sleeve 42 passes through the middle of the lower flange 18 and can move up and down in the lower flange 18.
The lower wedge blocks 34 are slidably connected with the bottom plate 30 through plane guide rails 302; the upper end face of the lower wedge block 34 is provided with a first wedge face 340, the lower end face of the upper wedge block 35 is provided with a second wedge face 350, and the second wedge face 350 is slidably connected with the first wedge face 340 through a slope guide 341. In a more preferred embodiment, the flat guide 302 and the ramp guide 341 are cross roller guides.
The position adjusting mechanism 4 is used for adjusting the position of the blood detecting device 6 on the connecting rod 43, and the micro-displacement actuating mechanism 3 is used for realizing the reciprocating displacement of the blood detecting device 6 on the connecting rod 43 in the vertical direction.
In an embodiment, a plurality of adjusting threaded holes 420 are opened at the side of the outer sleeve 42, the adjusting assembly 44 includes an adjusting nut 440 fittingly inserted into the adjusting threaded hole 420, an adjusting screw 441 fittingly inserted into the adjusting nut 440, and a locking nut 442 disposed on the adjusting screw 441, an inner end of the adjusting screw 441 is provided with a first knock ball 443 for pressing against an outer wall of the connecting rod 43; a first copper spring 46 is also disposed on the outer sleeve 42 opposite the adjustment threaded hole 420.
The side wall of the outer sleeve 42 is provided with a copper sheet slot 47 for arranging the copper sheet spring 46, the first copper sheet spring 46 is a folded copper sheet and comprises a vertical sheet part 460 fixedly connected to the copper sheet slot 47 and an elastic inclined sheet part 461 connected with the vertical sheet part 460, and the elastic inclined sheet part 461 extends into the outer sleeve 42 and is pressed against the outer wall of the connecting rod 43.
Wherein, the upper end of the outer sleeve is provided with a baffle plate 41, the top end of the connecting rod 43 is attached to the top of the baffle plate, and the baffle plate 41 is connected with the upper wedge-shaped block 35.
Wherein, the pull ring assembly 45 comprises a pull ring seat 450 fixedly connected to the outer wall of the outer sleeve 42, a pull rod 451 telescopically inserted into a pull rod 451 hole formed in the pull ring seat 450, a pull ring cap 452 connected to the outer end of the pull rod 451, a spring 453 sleeved on the pull rod 451, and a pull ring 454 connected to the inner end of the pull rod 451, one end of the spring 453 is connected to the pull ring seat 450, and the other end of the spring is connected to the pull ring cap 452, and the pull ring 454 is sleeved on the connecting rod 43. The pull ring assembly 45 is used to lock the connecting rod 43 and prevent the connecting rod 43 from falling downward out of the outer sleeve 42, while also facilitating adjustment of the position of the connecting rod 43 within the outer sleeve 42.
Referring to fig. 12, the pull ring assembly 45 operates on the principle of: when the connecting rod 43 is installed, the upper end of the connecting rod 43 needs to be pressed against the bottom surface of the baffle plate 41, the upper and lower positions of the connecting rod 43 need to be adjusted, at this time, the pull-down ring cap 452 is pressed (namely, the pull-down ring cap 452 is pressed rightwards), the pull rod 451 is inserted into the outer sleeve 42 (namely, rightwards), the pull ring 454 is driven to move rightwards, the pull ring 454 does not strain the connecting rod 43 any more, the fixing of the connecting rod 43 is released, and then the connecting rod 43 is pushed upwards to the; then the pull ring cap 452 is loosened, the pull ring cap 452 is pushed to the left by the elastic force of the spring 453, the pull ring 454 is driven to move to the left by the pull rod 451, the pull ring 454 hooks the connecting rod 43, the connecting rod 43 cannot fall down, and then the position of the connecting rod 43 is adjusted by the adjusting assembly 44.
Referring to fig. 11, the operating principle of the adjustment assembly 44 package is: the adjusting nut 440 is fixed on the outer sleeve 42, the adjusting screw 441 is rotated to enable the adjusting screw 441 to move left and right on the adjusting nut 440, when the adjusting screw 441 moves inwards, the connecting rod 43 is pressed and moved, and after the adjusting is finished, the locking nut 442 is rotated to lock; the elastic inclined piece 461 of the first copper spring 46 presses against the connecting rod 43, so that the connecting rod 43 is always in contact with the inner end of the adjusting screw 441 and provides the return power of the connecting rod 43. Specifically, referring to fig. 9, for example, when the adjusting screw 441 is rotated to move toward the inside of the outer sleeve 42 (to the left), the adjusting screw presses against the connecting rod 43 to move the connecting rod 43 to the left; when the adjustment screw 441 is rotated to move outward (to the right) of the outer sleeve 42, the adjustment screw 441 is opposite; the first copper spring 46 presses the connecting rod 43 to move the connecting rod 43 rightwards, and the left, right, front, back and space angles of the connecting rod 43 can be adjusted through the plurality of adjusting assemblies 44.
Referring to FIG. 10, in a more preferred embodiment, the adjustment assemblies 44 include 4 sets of a first upper adjustment assembly 444, a first lower adjustment assembly 445, a second upper adjustment assembly 446, a second lower adjustment assembly 447;
wherein the first upper adjusting assembly 444 and the first lower adjusting assembly 445 are sequentially arranged on the outer wall of the outer sleeve 42 along the vertical direction to form a first adjusting assembly unit; the second upper adjusting assembly 446 and the second lower adjusting assembly 447 are sequentially arranged on the outer wall of the outer sleeve 42 along the vertical direction to form a second adjusting assembly unit; the first upper adjusting assembly 444 and the second upper adjusting assembly 446 are arranged in the same horizontal plane, and the included angle is 90 degrees; the first lower adjustment assembly 445 and the second lower adjustment assembly 447 are in the same horizontal plane and have an included angle of 90 °. The copper spring 46 includes a first copper spring and a second copper spring, which are respectively opposite to the first adjusting unit and the second adjusting unit. The left-right front-back and space angle adjustment of the connecting rod 43 can be realized through the first upper adjusting assembly 444, the first lower adjusting assembly 445, the second upper adjusting assembly 446 and the second lower adjusting assembly 447.
The oscillating mechanism 5 provides power for the sample to rotate back and forth at a small angle. Referring to fig. 15-16, in the present embodiment, the sample cup rotating and lifting mechanism, the cam wedge micro-displacement mechanism, the position adjusting mechanism, and the blood detecting device all include 2 sets that are symmetrically arranged;
the oscillating mechanism comprises a second motor fixedly connected to the upper substrate, a cam in driving connection with the second motor, a rotatable connection part and two cam followers, wherein the two cam followers are arranged on the upper substrate and are tightly attached to two sides of the cam, the two rocker rods are respectively connected to the two cam followers, the tension spring is connected between the two rocker rods, and the two rotating mechanisms are respectively connected to the two rocker rods. The tension spring 54 hooks the two swing rods 53, and the two cam followers 52 are tightly attached to the cam 51 under the action of the tension spring 54.
The two rotating mechanisms 55 are used for driving the two sets of sample cup rotating and lifting mechanisms 2 to rotate back and forth, respectively, and each rotating mechanism 55 comprises a rotating ring 550 fixedly connected with the oscillating bar 53 and rotatably sleeved on the periphery of the lower flange 18, two special-shaped guide rods 551 fixedly connected to the lower part of the rotating ring 550, and two second copper springs 552 fixedly connected to the two special-shaped guide rods 551 respectively.
The second copper sheet spring 552 comprises a fixed copper sheet part 553 fixedly connected to the lower part of the special-shaped guide bar 551 and an elastic copper sheet part 554 connected to the bottom of the fixed copper sheet part 553, and the tail end of the elastic copper sheet part 554 is rotatably connected with a spring shaft 555;
the lower part of the special-shaped guide bar 551 and the second copper spring 552 on the special-shaped guide bar 551 are clamped between the first push claw 241 and the second push claw 242 on the rotary platform 24, specifically: the shaped guide bar 551 abuts against the inner wall of the first push claw 241, the elastic copper sheet 554 abuts against the inner wall of the second push claw 242, and the spring shaft 555 at the end of the elastic copper sheet 554 is clamped in the clamping groove 244 on the inner wall of the second push claw 242. Two special-shaped guide rods 551 are respectively clamped on the two groups of rotary push claws 240. The special-shaped guide rod 551 abuts against the inner wall of the first push claw 241, the second elastic copper sheet is fixed on the special-shaped guide rod 551, the spring shaft 555 at the tail end of the elastic copper sheet part 554 is clamped in the clamping groove 244 on the inner wall of the second push claw 242, the spring shaft 555 is tightly attached to the clamping groove 244 on the inner wall of the second push claw 242 through the elastic force of the elastic copper sheet part 554, and therefore the second copper sheet spring 552 is tightly clamped between the first push claw 241 and the second push claw 242. So that the rotational power of the profile guide 551 is transmitted through the first push jaw 241 and the second push jaw 242. The sloped surface 243 on the inner sidewall of the second push pawl 242 facilitates the spring shaft 555 to be pressed into the notch 244 from top to bottom.
When the second motor 50 is powered on and rotates, the cam 51 rotates to drive the cam follower 52 to move, and further the swing rod 53 pushes the rotary ring 550 to move, so that the rotary ring 550 can rotate around the lower flange 18 at a small angle, and further the special-shaped guide rod 551, the second copper spring 552 fixed on the special-shaped guide rod and the axis of the flange 18 below the spring shaft 555 are driven to do reciprocating circular motion at a small angle as axes, and further the spring shaft 555 pushes the rotary platform 24 in the sample cup rotary lifting mechanism 2 below to realize the reciprocating circular motion at a small angle. The second copper spring 552 can reduce the clamping stagnation of the special-shaped guide rod 551 and the sample cup rotary lifting mechanism 2 in relative sliding, eliminate the gap between the spring shaft 555 and parts after the sample cup rotary lifting mechanism 2 reaches a specified position, and does not sacrifice the transferred displacement.
The utility model discloses an oscillating mechanism 5 drives sample cup rotary lifting mechanism 2 and reciprocates rotatoryly to carry out the rule oscillation to the blood sample in the sample cup 7, drive the probe 60 on the blood detection device 6 through cam wedge micrometric displacement actuating mechanism 3 and carry out the reciprocal micrometric displacement of vertical direction and actuate, with the physiological process of simulating the internal blood coagulation of human body, thereby guarantee the accuracy of detection and analysis result. The position adjusting mechanism 4 is used for adjusting the position of the probe 60 on the blood detection device 6, so that the probe 60 is aligned with the center of the sample cup 7, and the measurement is kept consistent, so as to improve the accuracy of the measurement result.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.
Claims (10)
1. A coagulation testing device, comprising: the device comprises a mounting frame, a sample cup rotating and lifting mechanism, a cam wedge-shaped micro-displacement mechanism, a position adjusting mechanism, a blood detection device and an oscillating mechanism;
the sample cup rotary lifting mechanism is arranged on the mounting rack and used for placing a sample cup and realizing manual lifting of the sample cup;
the blood detection device is arranged on the position adjusting mechanism, and the position adjusting mechanism is used for adjusting the position of a probe on the blood detection device to align the probe to the center of the sample cup;
the cam wedge-shaped micro-displacement mechanism is arranged on the mounting frame, the position adjusting mechanism is arranged on the cam wedge-shaped micro-displacement mechanism, and the cam wedge-shaped micro-displacement mechanism is used for driving the blood detection device to perform reciprocating displacement in the vertical direction;
the oscillating mechanism is arranged on the mounting frame and used for driving the sample cup rotating and lifting mechanism to rotate in a reciprocating manner.
2. The coagulation testing device of claim 1, wherein the mounting frame comprises a lower substrate, a pillar disposed on the lower substrate, an upper substrate disposed on an upper end of the pillar, a micro-displacement mechanism adapter plate disposed on the upper substrate, a level and temperature control meter disposed on the upper substrate, a main control device disposed on the lower substrate, and a foot pad disposed at a bottom of the lower substrate.
3. The blood coagulation testing device of claim 2, wherein the sample cup rotating and lifting mechanism comprises a lifting guide rod fixedly connected to the lower substrate, a ball plunger seat slidably sleeved on the lifting guide rod up and down, a linear bearing slidably sleeved on the lifting guide rod up and down and fixedly connected to an upper end face of the ball plunger seat, a lifting platform fixedly connected to the linear bearing, a rotating platform rotatably arranged on the lifting platform, a sample cup holder arranged on the rotating platform, and a sample cup holder arranged on the sample cup holder and used for holding the sample cup;
the middle part of the ball-head plunger seat is provided with a guide hole for the lifting guide rod to pass through, the side periphery of the ball-head plunger seat is provided with a plurality of plunger holes penetrating through the guide hole, a ball-head plunger is inserted in the plunger holes, and the inner end of the ball-head plunger is used for jacking the outer wall of the lifting guide rod.
4. The coagulation testing device according to claim 3, wherein 2 sets of rotary pushing claws are fixedly connected to two sides of the rotary platform, each rotary pushing claw comprises a first pushing claw and a second pushing claw which are arranged at intervals, the mutually facing side walls of the first pushing claw and the second pushing claw are respective inner side walls, and an inclined surface and a clamping groove are arranged on the inner side wall of the second pushing claw.
5. The coagulation testing device according to claim 4, wherein the cam wedge micro-displacement mechanism comprises a bottom plate arranged on the adapter plate of the micro-displacement mechanism, a first motor arranged on the bottom plate, an end face cam in driving connection with the first motor, a driven pin inserted in an end face groove formed on the end face cam in a matching manner, a lower wedge block fixedly connected with the driven pin and having a bottom surface slidably connected with the bottom plate, an upper wedge block slidably arranged on the lower wedge block through a wedge face, a linear bearing fixedly connected to the bottom of the upper wedge block, and a guide shaft having an upper end inserted in the linear bearing and a lower end fixedly connected with the bottom plate.
6. The coagulation testing device according to claim 5, wherein the position adjusting mechanism comprises an outer sleeve connected with the upper wedge block, a connecting rod inserted in the outer sleeve, a plurality of adjusting assemblies arranged on the outer sleeve for adjusting the position of the connecting rod in the outer sleeve, and a pull ring assembly arranged on the outer sleeve for locking the connecting rod; the blood detection device is connected to the lower end of the connecting rod;
the lower wedge-shaped block is connected with the bottom plate in a sliding way through a plane guide rail; the upper end surface of the lower wedge block is provided with a first wedge surface, the lower end surface of the upper wedge block is provided with a second wedge surface, and the second wedge surface is slidably connected with the first wedge surface through an inclined surface guide rail;
the position adjusting mechanism is used for adjusting the position of the blood detection device on the connecting rod, and the micro-displacement actuating mechanism is used for realizing the reciprocating displacement of the blood detection device on the connecting rod in the vertical direction.
7. The coagulation testing device according to claim 6, wherein a plurality of adjusting threaded holes are formed in the side portion of the outer sleeve, the adjusting assembly comprises an adjusting nut fittingly inserted into the adjusting threaded hole, an adjusting screw fittingly inserted into the adjusting nut, and a locking nut arranged on the adjusting screw, and a jacking ball for jacking against the outer wall of the connecting rod is arranged at the inner end of the adjusting screw; a first copper sheet spring is further arranged on the outer sleeve and on the opposite side of the adjusting threaded hole;
a copper sheet slotted hole for arranging the copper sheet spring is formed in the side wall of the outer sleeve, the copper sheet spring is a folded copper sheet and comprises a vertical sheet part fixedly connected to the copper sheet slotted hole and an elastic inclined sheet part connected with the vertical sheet part, and the elastic inclined sheet part extends into the outer sleeve and is pressed on the outer wall of the connecting rod;
the pull ring assembly comprises a pull ring seat fixedly connected to the outer wall of the outer sleeve, a pull rod which is inserted into a pull rod hole formed in the pull ring seat in a telescopic mode, a pull ring cap connected to the outer end of the pull rod, a spring arranged on the pull rod in a sleeved mode, and a pull ring connected to the inner end of the pull rod, one end of the spring is connected with the pull ring seat, the other end of the spring is connected with the pull ring cap, and the pull ring is arranged on the connecting rod in a sleeved mode.
8. The coagulation testing device of claim 7, wherein the sample cup rotating and lifting mechanism, the cam wedge micro-displacement mechanism, the position adjusting mechanism and the blood detecting device comprise 2 groups which are symmetrically arranged;
the oscillating mechanism comprises a second motor fixedly connected to the upper substrate, a cam in driving connection with the second motor, a rotatable connection part and two cam followers, wherein the two cam followers are arranged on the upper substrate and are tightly attached to two sides of the cam, the two rocker rods are respectively connected to the two cam followers, the tension spring is connected between the two rocker rods, and the two rotating mechanisms are respectively connected to the two rocker rods.
9. The coagulation testing device of claim 8, wherein the two rotating mechanisms are used to respectively drive the two sets of sample cup rotating and lifting mechanisms to rotate reciprocally, and each rotating mechanism comprises a swivel fixedly connected to the swing rod and rotatably sleeved on the periphery of the lower flange, two guide rods fixedly connected to the lower portion of the swivel, and two second copper springs fixedly connected to the two guide rods, respectively.
10. The coagulation testing device of claim 9, wherein the second copper spring comprises a fixed copper portion fixedly connected to the lower portion of the guide rod and an elastic copper portion connected to the bottom of the fixed copper portion, and a spring shaft is rotatably connected to the end of the elastic copper portion;
the lower part of the guide rod and the second copper sheet spring on the guide rod are clamped between the first push claw and the second push claw on the rotating platform, and the method specifically comprises the following steps: the guide rod with interior wall top subsides on the first pusher dog, elasticity copper sheet portion with the inner wall elasticity top subsides of second pusher dog, just the terminal spring axle card of elasticity copper sheet portion is established in the draw-in groove on the inner wall of second pusher dog.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921017170.5U CN211292924U (en) | 2019-07-02 | 2019-07-02 | Blood coagulation testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921017170.5U CN211292924U (en) | 2019-07-02 | 2019-07-02 | Blood coagulation testing device |
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| CN211292924U true CN211292924U (en) | 2020-08-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389210A (en) * | 2019-07-02 | 2019-10-29 | 中国科学院苏州生物医学工程技术研究所 | Blood coagulation test device |
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2019
- 2019-07-02 CN CN201921017170.5U patent/CN211292924U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389210A (en) * | 2019-07-02 | 2019-10-29 | 中国科学院苏州生物医学工程技术研究所 | Blood coagulation test device |
| CN110389210B (en) * | 2019-07-02 | 2024-03-22 | 中国科学院苏州生物医学工程技术研究所 | Coagulation test device |
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