Centrifugal tube reciprocating oscillation device with two degrees of freedom

Abstract

The utility model discloses a centrifuge tube reciprocating oscillation device with two degrees of freedom, and relates to the technical field of analysis instrument pretreatment. When the oscillation device works, a driving motor is started to drive a driving wheel to rotate, the driving wheel drives a driven wheel to rotate through a belt, and a cam shaft rotates along with the driven wheel; the cam shaft rotates and drives the cam and the second crank to rotate at the same time, at the moment, the second connecting rod shaft is driven by the second crank to conduct stirring rotation around the center point of the second connecting rod shaft, and reciprocating swing in the horizontal direction is conducted while rotating in cooperation with the connecting rod bearings and the first connecting rod shaft at the two ends of the oscillation rack. When the cam rotates, the oscillation rack does reciprocating rotation in the same horizontal direction along with the first connecting rod shaft, the rotating axis of the oscillation rack coincides with the central axis of the rotating shaft, power for reciprocating rotation in the horizontal direction is provided for the follow-up module and the oscillation module, and when the cam rotates, the cam follow-up device reciprocates in the vertical direction along the surface of the cam. Therefore, the oscillation module oscillates back and forth in the vertical direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to analytical instrument pre -treatment technical field, and specifically is a centrifugal tube reciprocating oscillation device with double degrees of freedom. BACKGROUND

[0002] In the current centrifugal tube oscillation device, most of the devices only have one direction of reciprocating oscillation, need longer oscillation time to complete the full mixing of solid and liquid in the centrifugal tube, require high oscillation frequency and oscillation amplitude, and the service life of the device is low, and a small part of reciprocating oscillation devices containing two directions often use multiple driving elements to realize the oscillation function, the device is complex and the cost is high, and large noise is generated simultaneously. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a centrifugal tube reciprocating oscillation device with double degrees of freedom to solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The oscillation device comprises a base, a double-bearing bearing seat, a motor seat, a driving motor, a driving wheel, a rotating shaft, an oscillation frame, a flange coupling, a first connecting rod shaft, a connecting rod bearing, a second connecting rod shaft, a crank, a base fixing shaft, a cam shaft, a cam, a driven wheel, a belt, a follow-up module and an oscillation module, the crank comprises a first crank and a second crank, the motor seat and the base are fixedly connected, the driving motor and the motor seat are fixedly connected, the output shaft of the driving motor and the driving wheel are fixedly connected, the driving motor and the driving wheel are located on the two sides of the motor seat respectively, the base and the oscillation frame are connected, the double-bearing bearing seat and the base are fixedly connected, the double-bearing bearing seat penetrates through the base, one end of the rotating shaft penetrates through the double-bearing bearing seat, the rotating shaft and the double-bearing bearing seat are rotationally connected, the other end of the rotating shaft and the oscillation frame are fixedly connected, the flange coupling and the upper end surface of the oscillation frame are fixedly connected, the two ends of the first connecting rod shaft are respectively provided with a connecting rod bearing, the two connecting rod bearings are arranged at the two ends of the oscillation frame respectively, the two connecting rod bearings and the oscillation frame are fixedly connected, the first connecting rod shaft penetrates through the middle of the oscillation frame, the second connecting rod shaft penetrates through the middle of the first connecting rod shaft, the second connecting rod shaft and the first connecting rod shaft are slidingly connected, the two ends of the second connecting rod shaft are fixedly connected with the first crank and the second crank respectively, the first crank and the base fixing shaft are fixedly connected, the second crank and the cam shaft are fixedly connected, the base fixing shaft and the base are rotationally connected, the cam shaft penetrates through the second crank, the cam, the base and the driven wheel in sequence, the cam and the cam shaft are fixedly connected, the base and the cam shaft are rotationally connected, the driven wheel and the cam shaft are fixedly connected, one end of the belt is sleeved on the driving wheel, the other end of the belt is sleeved on the driven wheel, the driving wheel and the driven wheel are located on the same side of the base, the follow-up module and the flange coupling are fixedly connected, the follow-up module and the oscillation module are fixedly connected, the follow-up module and the base are fixedly connected, one end of the follow-up module is placed on the cam.

[0006] Two deep groove ball bearings are arranged in the double bearing bearing seat, two sections of clamping grooves are arranged on the rotating shaft, the rotating shaft is connected by clamping the clamping spring in the clamping groove and the two deep groove ball bearings, and the effect of free rotation in the double bearing bearing seat is achieved, the two ends of the first connecting rod shaft are provided with shaft shoulders and clamping spring grooves, the cooperation of the shaft shoulders and the clamping springs is used to fix the first connecting rod shaft and the connecting rod bearings at the two ends, the camshaft and the cam are circumferentially positioned by using a key, when the oscillation device works, the driving motor is started, the output shaft of the driving motor drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the belt, the camshaft rotates with the driven wheel, and the camshaft drives the cam and the second crank to rotate at the same time, at this time, the second connecting rod shaft rotates around its center point under the driving of the second crank, and the first connecting rod shaft rotates while reciprocating in the horizontal direction in cooperation with the connecting rod bearings at the two ends of the oscillation frame, the oscillation frame also reciprocates in the horizontal direction with the first connecting rod shaft, the rotation axis of the oscillation frame coincides with the center axis of the rotating shaft, and the power of reciprocating rotation in the horizontal direction is provided for the follow-up module and the oscillation module, when the cam rotates, the follow-up module is always abutted on the cam and moves reciprocally in the vertical direction along the surface of the cam, so that the oscillation module is reciprocated in the vertical direction.

[0007] Further, the base includes a base plate, a damping column, a spring column, a first self-made bearing seat, a second self-made bearing seat, and a spring, the damping column is fixedly connected with the base plate, the damping column is located at the four corners of the lower end surface of the base plate, the first self-made bearing seat and the second self-made bearing seat are arranged on the two sides of the base plate, the first self-made bearing seat is fixedly connected with the base plate, the first self-made bearing seat is rotatably connected with the base fixed shaft, the first self-made bearing seat is fixedly connected with the follow-up module, the second self-made bearing seat is fixedly connected with the base plate, the second self-made bearing seat is rotatably connected with the camshaft, the spring column is fixedly connected with the base plate, the spring column is arranged around the oscillation frame, one end of the spring is fixedly connected with the spring column, and the other end of the spring is fixedly connected with the oscillation frame.

[0008] The first self-made bearing seat is provided with a bearing, the base fixed shaft is provided with a shaft shoulder and a clamping spring groove, the shaft shoulder is coincided with the outer ring of the bearing and the first crank respectively on two sides, and the cooperation of the shaft shoulder and the clamping spring arranged in the clamping spring groove prevents the axial movement of the base fixed shaft and the falling of the bearing, the second self-made bearing seat is also provided with a bearing, the camshaft is provided with a shaft shoulder and a clamping spring groove, the shaft shoulder is coincided with the outer ring of the bearing in the second self-made bearing seat and the cam respectively on two sides, and the cooperation of the shaft shoulder and the clamping spring arranged in the clamping spring groove prevents the falling of the bearing.

[0009] Further, the damping column is made of rubber.

[0010] The damping column made of rubber can reduce the vibration of the whole oscillation device, reduce the noise generated during oscillation, and improve the service life of the oscillation device.

[0011] Further, the oscillation frame is provided with a fixing column, the fixing column is fixedly connected with the oscillation frame, and one end of the fixing column is fixedly connected with the spring.

[0012] The two ends of the spring are fixedly connected with the fixing column and the spring column respectively, when the oscillation device reciprocates in the horizontal direction, the fixing column can protect the rotating shaft and the double-bearing bearing seat, the service life of the device is improved, and the fixing column can assist the device in returning to the normal position.

[0013] Further, the motor seat comprises a spacer and a motor frame, the spacer is fixedly connected with the base plate, the motor frame is fixedly connected with the spacer, the output shaft of the driving motor passes through the motor frame, and the motor frame is fixedly connected with the driving motor.

[0014] Further, the spacer is made of rubber.

[0015] The spacer made of rubber can reduce the vibration generated when the driving motor works, improve the service life of the device, and reduce noise.

[0016] Further, the follow-up module comprises a spline shaft, a spline nut, a bearing adapter ring, a bearing pressing plate, a cam follower plate, a damping block, a linear bearing, a light shaft, a follower mounting plate, a cam follower and a rotating bearing, the light shaft is fixedly connected with the first self-made bearing seat, the linear bearing is slidingly connected with the light shaft, one end of the cam follower plate is fixedly connected with the linear bearing, the other end of the cam follower plate is fixedly connected with the follower mounting plate, the follower mounting plate is fixedly connected with the cam follower, the cam follower is placed on the cam, the bearing pressing plate is fixedly connected with the cam follower plate, the rotating bearing is arranged in the cam follower plate, the bearing pressing plate is pressed on the outer ring upper surface of the rotating bearing, the inner ring of the rotating bearing is fixedly connected with the bearing adapter ring, the spline shaft passes through a flange coupling, the spline nut and the damping block in sequence, the spline shaft is fixedly connected with the flange coupling, the spline shaft is slidingly connected with the spline nut, the spline shaft is fixedly connected with the damping block, the spline nut is fixedly connected with the bearing adapter ring, and the spline nut is inserted into the oscillation module.

[0017] The central axis of the spline shaft and the central axis of the rotating shaft coincide, the bearing adapter ring is provided with a shaft shoulder and a clamping groove, the shaft shoulder is in contact with the upper end surface of the rotating bearing inner ring, the clamping groove is provided with a steel wire retainer, the steel wire retainer is in contact with the lower end surface of the rotating bearing inner ring, the steel wire retainer and the shaft shoulder cooperate to clamp and fix the rotating bearing, when the oscillation device works, the horizontal reciprocating rotation of the oscillation frame drives the flange coupling to rotate, the rotation of the flange coupling drives the spline shaft to reciprocate, the spline shaft drives the oscillation module to reciprocate in the horizontal direction through the spline nut, the rotation axis of the oscillation module and the rotation axis of the spline shaft coincide, the cam follower rolls along the edge of the cam when the cam rotates, and the vertical displacement of the cam follower plate is realized, and power is provided for the vertical displacement of the oscillation module.

[0018] Further, the shock-absorbing block is made of rubber.

[0019] The shock-absorbing block can reduce the impact force of the spline shaft on the oscillation module, protect the components of the oscillation module, and improve the service life of the device.

[0020] Further, the oscillation module comprises an oscillation base, an oscillation cup, a flexible part, a gas cylinder and a rigid part, the oscillation base is fixedly connected with the spline nut, the spline nut penetrates through the oscillation base, the oscillation cup is fixedly connected with the oscillation base, the gas cylinder is fixedly connected with the oscillation cup, the output end of the gas cylinder is fixedly connected with the rigid part, and the flexible part is embedded in the oscillation cup.

[0021] The centrifugal tube is placed in the flexible part, the flexible part can protect the centrifugal tube when the oscillation device oscillates, and prevent the centrifugal tube from being broken due to excessive oscillation amplitude and frequency; and the gas cylinder can clamp and fix the centrifugal tube by pushing the rigid part when the oscillation device operates, so that the centrifugal tube is prevented from being separated.

[0022] Further, the bottom end of the oscillation cup is provided with a groove, the radius of the groove is greater than the radius of the shock-absorbing block and the spline shaft, and the depth of the groove is greater than or equal to the vertical displacement length of the linear bearing.

[0023] The radius and depth of the groove ensure the normal operation of the oscillation device, so that the oscillation module can oscillate in the vertical direction along with the follower module when the oscillation device operates.

[0024] Compared with the prior art, the utility model has the advantages that:

[0025] 1. Only one driving motor is used as a driving element to complete double-degree-of-freedom oscillation, thereby reducing the cost of the oscillation device and improving the oscillation effect;

[0026] 2. A plurality of parts made of rubber are used, so that the vibration of the oscillation device is greatly reduced, and the noise is reduced;

[0027] 3. The utility model uses the step motor as the driving element avoids the low life problem of the brush motor;

[0028] 4. The utility model uses the synchronous wheel transmission, can select the appropriate transmission ratio to realize the speed increasing or the output torque is big, changes the oscillation frequency of the oscillation device. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the overall structure schematic diagram of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model;

[0030] Figure 2 It is the partial structure section view schematic diagram of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model;

[0031] Figure 3 It is the structure schematic diagram of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model removes the oscillation module;

[0032] Figure 4 It is the structure schematic diagram of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model removes the oscillation module and the follow-up module;

[0033] Figure 5 It is the partial structure schematic diagram of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model;

[0034] Figure 6 It is the structure schematic diagram of the oscillation module of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model;

[0035] Figure 7 It is the section view schematic diagram of the oscillation module of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model;

[0036] Figure 8 It is the structure schematic diagram of the follow-up module of a centrifugal tube reciprocating oscillation device with double degrees of freedom of the utility model.

[0037] In the figure: 1, base; 2, double bearing bearing seat; 3, motor seat; 4, driving motor; 5, driving wheel; 6, rotating shaft; 7, oscillation frame; 8, flange coupling; 9, first connecting rod shaft; 10, connecting rod bearing; 11, second connecting rod shaft; 12, crank; 13, base fixing shaft; 14, camshaft; 15, cam; 16, driven wheel; 17, belt; 18, follow-up module; 19, oscillation module; 31, spacer; 32, motor frame; 71, fixed column; 121, first crank; 122, second crank; 111, base plate; 112, shock absorbing column; 113, spring column; 115, spring; 181, spline shaft; 182, spline nut; 183, bearing adapter ring; 184, bearing pressing plate; 185, cam follower plate; 186, shock absorbing block; 187, linear bearing; 188, optical axis; 189, follower mounting plate; 191, oscillation base; 192, oscillation cup; 193, flexible part; 194, air cylinder; 195, rigid part; 196, groove; 1141, first self-made bearing seat; 1142, second self-made bearing seat; 1801, cam follower; 1802, rotating bearing. DETAILED DESCRIPTION

[0038] Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the range of protection of the utility model.

[0039] Embodiment: as shown in the figure, the utility model provides a kind of centrifugal tube reciprocating oscillation device technical scheme with double degrees of freedom: Figure 1 Figure 8 As shown in the figure, the utility model provides a kind of centrifugal tube reciprocating oscillation device technical scheme with double degrees of freedom:

[0040] As shown in the figure, the utility model provides a kind of centrifugal tube reciprocating oscillation device technical scheme with double degrees of freedom: Figures 1-5 ​As shown, the oscillation device comprises a base 1, a double bearing bearing seat 2, a motor seat 3, a driving motor 4, a driving wheel 5, a rotating shaft 6, an oscillation frame 7, a flange coupling 8, a first connecting rod shaft 9, a connecting rod bearing 10, a second connecting rod shaft 11, a crank 12, a base fixing shaft 13, a camshaft 14, a cam 15, a driven wheel 16, a belt 17, a follow-up module 18 and an oscillation module 19, the crank 12 comprises a first crank 121 and a second crank 122, the motor seat 3 and the base 1 are fixedly connected, the driving motor 4 and the motor seat 3 are fixedly connected, the output shaft of the driving motor 4 and the driving wheel 5 are fixedly connected, the driving motor 4 and the driving wheel 5 are located on the two sides of the motor seat 3 respectively, the base 1 and the oscillation frame 7 are connected, the double bearing bearing seat 2 and the base 1 are fixedly connected, the double bearing bearing seat 2 penetrates through the base 1, one end of the rotating shaft 6 penetrates through the double bearing bearing seat 2, the rotating shaft 6 and the double bearing bearing seat 2 are rotationally connected, the other end of the rotating shaft 6 and the oscillation frame 7 are fixedly connected, the flange coupling 8 and the upper end surface of the oscillation frame 7 are fixedly connected, the two ends of the first connecting rod shaft 9 are respectively provided with one connecting rod bearing 10, the two connecting rod bearings 10 are respectively arranged at the two ends of the oscillation frame 7, the two connecting rod bearings 10 and the oscillation frame 7 are fixedly connected, the first connecting rod shaft 9 penetrates through the middle of the oscillation frame 7, the second connecting rod shaft 11 penetrates through the middle of the first connecting rod shaft 9, the second connecting rod shaft 11 and the first connecting rod shaft 9 are slidingly connected, the two ends of the second connecting rod shaft 11 are respectively fixedly connected with the first crank 121 and the second crank 122, the first crank 121 and the base fixing shaft 13 are fixedly connected, the second crank 122 and the camshaft 14 are fixedly connected, the base fixing shaft 13 and the base 1 are rotationally connected, the camshaft 14 penetrates through the second crank 122, the cam 15, the base 1 and the driven wheel 16 in sequence, the cam 15 and the camshaft 14 are fixedly connected, the base 1 and the camshaft 14 are rotationally connected, the driven wheel 16 and the camshaft 14 are fixedly connected, one end of the belt 17 is sleeved on the driving wheel 5, the other end of the belt 17 is sleeved on the driven wheel 16, the driving wheel 5 and the driven wheel 16 are located on the same side of the base 1, the follow-up module 18 and the flange coupling 8 are fixedly connected, the follow-up module 18 and the oscillation module 19 are fixedly connected, the follow-up module 18 and the base 1 are fixedly connected, one end of the follow-up module 18 is placed on the cam 15.

[0041] Two deep groove ball bearings are arranged in the double bearing bearing seat 2, two sections of clamping grooves are arranged on the rotating shaft 6, the rotating shaft 6 is connected through clamping the clamping spring in the clamping groove and the two deep groove ball bearings, the effect of free rotation in the double bearing bearing seat 2 is achieved, the shaft shoulder and the clamping spring groove are arranged at the two ends of the first connecting rod shaft 9, the fixing of the first connecting rod shaft 9 and the two end connecting rod bearings 10 is completed through the cooperation of the shaft shoulder and the clamping spring, the flat key is used between the camshaft 14 and the cam 15 for the circumferential positioning of the cam 15, when the oscillation device works, the driving motor 4 is started, the output shaft of the driving motor 4 drives the driving wheel 5 to rotate, the driving wheel 5 drives the driven wheel 16 to rotate through the belt 17, the camshaft 14 rotates with the driven wheel 16, the camshaft 14 drives the rotation of the cam 15 and the second crank 122 at the same time, at this time, the second connecting rod shaft 11 rotates around the center point of itself under the driving of the second crank 122, the first connecting rod shaft 9 rotates while reciprocating in the horizontal direction in cooperation with the connecting rod bearings 10 at the two ends of the oscillation frame 7, the oscillation frame 7 reciprocates in the horizontal direction with the first connecting rod shaft 9, the rotation axis of the oscillation frame 7 and the center axis of the rotating shaft 6 coincide, the horizontal direction reciprocating power of the follow-up module 18 and the oscillation module 19 is provided, when the cam 15 rotates, the follow-up module 18 always abuts on the cam 15 and reciprocates in the vertical direction along the surface of the cam 15, so as to reciprocate the oscillation module 19 in the vertical direction.

[0042] As shown in Figures 1-4 The base 1 includes a base plate 111, a damping column 112, a spring column 113, a first self-made bearing seat 1141, a second self-made bearing seat 1142 and a spring 115, the damping column 112 is fixedly connected with the base plate 111, the damping column 112 is located at the four corners of the lower end surface of the base plate 111, the first self-made bearing seat 1141 and the second self-made bearing seat 1142 are arranged on the two sides of the base plate 111, the first self-made bearing seat 1141 is fixedly connected with the base plate 111, the first self-made bearing seat 1141 is rotatably connected with the base fixing shaft 13, the first self-made bearing seat 1141 is fixedly connected with the follow-up module 18, the second self-made bearing seat 1142 is fixedly connected with the base plate 111, the second self-made bearing seat 1142 is rotatably connected with the camshaft 14, the spring column 113 is fixedly connected with the base plate 111, the spring column 113 is arranged around the oscillation frame 7, one end of the spring 115 is fixedly connected with the spring column 113, the other end of the spring 115 is fixedly connected with the oscillation frame 7.

[0043] The first self-made bearing seat 1141 is provided with a bearing, the base fixing shaft 13 is provided with a shaft shoulder and a snap spring groove, the shaft shoulder is overlapped with the first crank 121 and the outer ring of the bearing respectively, and the cooperation of the shaft shoulder and the snap spring arranged in the snap spring groove prevents the axial movement of the base fixing shaft 13 and the falling of the bearing. The second self-made bearing seat 1142 is also provided with a bearing, the cam shaft 14 is provided with a shaft shoulder and a snap spring groove, the shaft shoulder is overlapped with the cam 15 and the outer ring of the bearing in the second self-made bearing seat 1142 respectively, and the cooperation of the shaft shoulder and the snap spring arranged in the snap spring groove prevents the falling of the bearing.

[0044] The damping column 112 is made of rubber.

[0045] The damping column 112 made of rubber can reduce the vibration of the whole vibration device, reduce the noise generated during vibration, and improve the service life of the vibration device.

[0046] As shown in Figure 5 , the fixed column 71 is arranged on the vibration rack 7, the fixed column 71 is fixedly connected with the vibration rack 7, and one end of the fixed column 71 is fixedly connected with the spring 115.

[0047] The other end of the spring 115 is fixedly connected with the fixed column 71 and the spring column 113, which can protect the rotating shaft 6 and the double-bearing bearing seat 2 when the vibration device rotates reciprocatingly in the horizontal direction, improve the service life of the device, and assist in returning to the normal position when the device returns to the normal position.

[0048] As shown in Figure 4 , the motor seat 3 includes a spacer 31 and a motor rack 32, the spacer 31 is fixedly connected with the base plate 111, the motor rack 32 is fixedly connected with the spacer 31, the output shaft of the driving motor 4 passes through the motor rack 32, and the motor rack 32 is fixedly connected with the driving motor 4.

[0049] The spacer 31 is made of rubber.

[0050] The spacer 31 made of rubber can reduce the vibration generated when the driving motor 4 works, improve the service life of the device, and reduce the noise.

[0051] As shown in Figure 2 , Figure 6 , and Figure 8As shown, the follow-up module 18 includes a spline shaft 181, a spline nut 182, a bearing adapter ring 183, a bearing pressing plate 184, a cam follower plate 185, a shock absorbing block 186, a linear bearing 187, a light shaft 188, a follower mounting plate 189, a cam follower 1801 and a rotating bearing 1802, the light shaft 188 and the first self-made bearing seat 1141 are fixedly connected, the linear bearing 187 and the light shaft 188 are slidingly connected, one end of the cam follower plate 185 and the linear bearing 187 are fixedly connected, the other end of the cam follower plate 185 and the follower mounting plate 189 are fixedly connected, the follower mounting plate 189 and the cam follower 1801 are fixedly connected, the cam follower 1801 is placed on the cam 15, the bearing pressing plate 184 and the cam follower plate 185 are fixedly connected, the rotating bearing 1802 is arranged in the cam follower plate 185, the bearing pressing plate 184 is pressed on the upper surface of the outer ring of the rotating bearing 1802, the inner ring of the rotating bearing 1802 and the bearing adapter ring 183 are fixedly connected, the spline shaft 181 passes through the flange coupling 8, the spline nut 182 and the shock absorbing block 186 in sequence, the spline shaft 181 and the flange coupling 8 are fixedly connected, the spline shaft 181 and the spline nut 182 are slidingly connected, the spline shaft 181 and the shock absorbing block 186 are fixedly connected, the spline nut 182 and the bearing adapter ring 183 are fixedly connected, and the spline nut 182 is inserted into the vibration module 19.

[0052] The central axis of the spline shaft 181 coincides with the central axis of the rotating shaft 6, the bearing adapter ring 183 is provided with a shaft shoulder and a clamping groove, the shaft shoulder is in contact with the upper end surface of the inner ring of the rotating bearing 1802, a steel wire retainer is arranged in the clamping groove, the steel wire retainer is in contact with the lower end surface of the inner ring of the rotating bearing 1802, and the steel wire retainer and the shaft shoulder cooperate to clamp and fix the rotating bearing 1802. When the vibration device is working, the horizontal reciprocating rotation of the vibration frame 7 drives the flange coupling 8 to rotate, the rotation of the flange coupling 8 drives the spline shaft 181 to reciprocate, the spline shaft 181 drives the vibration module 19 to reciprocate horizontally through the spline nut 182, the rotation axis of the vibration module 19 coincides with the rotation axis of the spline shaft 181, and the cam follower 1801 rolls along the edge of the cam 15 when the cam 15 rotates, thereby realizing the vertical displacement of the cam follower plate 185 and providing power for the vertical displacement of the vibration module 19.

[0053] The shock absorbing block 186 is made of rubber.

[0054] The shock absorbing block 186 can reduce the impact force of the spline shaft 181 on the vibration module 19, protect the components of the vibration module 19 and improve the service life of the device.

[0055] As Figure 6 and Figure 7As shown, the oscillation module 19 includes an oscillation base 191, an oscillation cup 192, a flexible part 193, a gas cylinder 194 and a rigid part 195, the oscillation base 191 is fixedly connected with the spline nut 182, the spline nut 182 passes through the oscillation base 191, the oscillation cup 192 is fixedly connected with the oscillation base 191, the gas cylinder 194 is fixedly connected with the oscillation cup 192, the output end of the gas cylinder 194 is fixedly connected with the rigid part 195, and the flexible part 193 is embedded in the oscillation cup 192.

[0056] The centrifugal tube is placed in the flexible part 193, the flexible part 193 can protect the centrifugal tube when the oscillation device oscillates, and prevent the centrifugal tube from being broken due to excessive oscillation amplitude and frequency and impacting the oscillation cup 192, and the gas cylinder 194 clamps and stabilizes the centrifugal tube by pushing the rigid part 195 when the oscillation device operates, to prevent the centrifugal tube from being separated.

[0057] As shown in the figure, Figure 2 The oscillation cup 192 is provided with a groove 196 at the bottom end, the radius of the groove 196 is greater than the radius of the shock absorbing block 186 and the spline shaft 181, and the depth of the groove 196 is greater than or equal to the vertical displacement length of the linear bearing 187.

[0058] The radius and depth of the groove 196 ensure the normal operation of the oscillation device, so that the oscillation module 19 can oscillate in the vertical direction with the follow-up module 18 when the oscillation device operates.

[0059] The working principle of the utility model is: when the utility model works, the centrifugal tube is placed in the flexible part 193, the gas cylinder 194 is started, the centrifugal tube is clamped and stabilized by pushing the rigid part 195, the driving motor 4 is started, the output shaft of the driving motor 4 drives the driving wheel 5 to rotate, the driving wheel 5 drives the driven wheel 16 to rotate through the belt 17, the camshaft 14 rotates with the driven wheel 16, the camshaft 14 drives the cam 15 and the second crank 122 to rotate at the same time, at this time, the second connecting rod shaft 11 rotates around its center point under the drive of the second crank 122, and the first connecting rod shaft 9 rotates while reciprocating in the horizontal direction in cooperation with the connecting rod bearing 10 at both ends of the oscillation frame 7, the oscillation frame 7 rotates in the horizontal direction with the first connecting rod shaft 9, the rotation axis of the oscillation frame 7 coincides with the central axis of the rotating shaft 6, the reciprocating rotation of the oscillation frame 7 drives the flange coupling 8 to rotate, the rotation of the flange coupling 8 drives the spline shaft 181 to reciprocate, the spline shaft 181 drives the oscillation module 19 to reciprocate in the horizontal direction through the spline nut 182, the rotation axis of the oscillation module 19 coincides with the rotation axis of the spline shaft 181, the cam follower 1801 rolls along the edge of the cam 15 when the cam 15 rotates, realizing the vertical displacement of the cam follower plate 185, and providing power for the vertical displacement of the oscillation module 19.

[0060] It should be pointed out finally that: the above only for the preferred embodiments of the utility model have, and do not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A dual degree of freedom centrifuge tube reciprocating shaking device, characterized by: The oscillation device includes a base (1), a double bearing bearing seat (2), a motor seat (3), a driving motor (4), a driving wheel (5), a rotating shaft (6), an oscillation frame (7), a flange coupling (8), a first connecting rod shaft (9), a connecting rod bearing (10), a second connecting rod shaft (11), a crank (12), a base fixing shaft (13), a camshaft (14), a cam (15), a driven wheel (16), a belt (17), a follow-up module (18) and an oscillation module (19), the crank (12) includes a first crank (121) and a second crank (122), the motor seat (3) and the base (1) are fixedly connected, the driving motor (4) and the motor seat (3) are fixedly connected, the output shaft of the driving motor (4) and the driving wheel (5) are fixedly connected, the driving motor (4) and the driving wheel (5) are located on the two sides of the motor seat (3) respectively, the base (1) is connected with the oscillation frame (7), the double bearing bearing seat (2) and the base (1) are fixedly connected, the double bearing bearing seat (2) penetrates through the base (1), one end of the rotating shaft (6) penetrates through the double bearing bearing seat (2), the rotating shaft (6) and the double bearing bearing seat (2) are rotationally connected, the other end of the rotating shaft (6) is fixedly connected with the oscillation frame (7), the flange coupling (8) and the upper end surface of the oscillation frame (7) are fixedly connected, the first connecting rod shaft (9) is provided with a connecting rod bearing (10) at each end, the two connecting rod bearings (10) are arranged at the two ends of the oscillation frame (7) respectively, the two connecting rod bearings (10) and the oscillation frame (7) are fixedly connected, the first connecting rod shaft (9) penetrates through the middle of the oscillation frame (7), the second connecting rod shaft (11) penetrates through the middle of the first connecting rod shaft (9), the second connecting rod shaft (11) and the first connecting rod shaft (9) are slidingly connected, the two ends of the second connecting rod shaft (11) are fixedly connected with the first crank (121) and the second crank (122) respectively, the first crank (121) and the base fixing shaft (13) are fixedly connected, the second crank (122) and the camshaft (14) are fixedly connected, the base fixing shaft (13) and the base (1) are rotationally connected, the camshaft (14) penetrates through the second crank (122), the cam (15), the base (1) and the driven wheel (16) in sequence, the cam (15) and the camshaft (14) are fixedly connected, the base (1) and the camshaft (14) are rotationally connected, the driven wheel (16) and the camshaft (14) are fixedly connected, one end of the belt (17) is sleeved on the driving wheel (5), the other end of the belt (17) is sleeved on the driven wheel (16), the driving wheel (5) and the driven wheel (16) are located on the same side of the base (1), the follow-up module (18) and the flange coupling (8) are fixedly connected, the follow-up module (18) and the oscillation module (19) are fixedly connected, the follow-up module (18) and the base (1) are fixedly connected, one end of the follow-up module (18) is placed on the cam (15).

2. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 1, wherein: The base (1) comprises a base plate (111), a shock absorbing column (112), a spring column (113), a first self-made bearing seat (1141), a second self-made bearing seat (1142) and a spring (115), the shock absorbing column (112) is fixedly connected with the base plate (111), the shock absorbing column (112) is located at the four corners of the periphery of the lower end surface of the base plate (111), the first self-made bearing seat (1141) and the second self-made bearing seat (1142) are arranged on the two sides of the base plate (111), the first self-made bearing seat (1141) is fixedly connected with the base plate (111), the first self-made bearing seat (1141) is rotatably connected with the base fixing shaft (13), the first self-made bearing seat (1141) is fixedly connected with the follow-up module (18), the second self-made bearing seat (1142) is fixedly connected with the base plate (111), the second self-made bearing seat (1142) is rotatably connected with the camshaft (14), the spring column (113) is fixedly connected with the base plate (111), the spring column (113) is arranged around the oscillation frame (7), one end of the spring (115) is fixedly connected with the spring column (113), and the other end of the spring (115) is fixedly connected with the oscillation frame (7).

3. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 2, wherein: The shock absorbing column (112) is made of rubber.

4. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 3, characterized in that: The oscillation frame (7) is provided with a fixing column (71), the fixing column (71) is fixedly connected with the oscillation frame (7), and one end of the spring (115) is fixedly connected with the fixing column (71).

5. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 4, wherein: The motor seat (3) comprises a spacer (31) and a motor frame (32), the spacer (31) is fixedly connected with the base plate (111), the motor frame (32) is fixedly connected with the spacer (31), the output shaft of the driving motor (4) penetrates through the motor frame (32), and the motor frame (32) is fixedly connected with the driving motor (4).

6. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 5, wherein: The spacer (31) is made of rubber.

7. The dual degree of freedom centrifuge tube reciprocating shaking device of claim 1, wherein: The follow-up module (18) comprises a spline shaft (181), a spline nut (182), a bearing adapter ring (183), a bearing pressing plate (184), a cam follower plate (185), a shock absorbing block (186), a linear bearing (187), an optical axis (188), a follower mounting plate (189), a cam follower (1801) and a rotary bearing (1802), the optical axis (188) is fixedly connected with the first self-made bearing seat (1141), the linear bearing (187) is slidably connected with the optical axis (188), one end of the cam follower plate (185) is fixedly connected with the linear bearing (187), the other end of the cam follower plate (185) is fixedly connected with the follower mounting plate (189), the follower mounting plate (189) is fixedly connected with the cam follower (1801), the cam follower (1801) is placed on the cam (15), the bearing pressing plate (184) is fixedly connected with the cam follower plate (185), the rotary bearing (1802) is arranged in the cam follower plate (185), the bearing pressing plate (184) is pressed on the upper surface of the outer ring of the rotary bearing (1802), the inner ring of the rotary bearing (1802) is fixedly connected with the bearing adapter ring (183), the spline shaft (181) passes through the flange coupling (8), the spline nut (182) and the shock absorbing block (186) in sequence, the spline shaft (181) is fixedly connected with the flange coupling (8), the spline shaft (181) is slidably connected with the spline nut (182), the spline shaft (181) is fixedly connected with the shock absorbing block (186), the spline nut (182) is fixedly connected with the bearing adapter ring (183), and the spline nut (182) is inserted into the shock module (19).

8. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 7, characterized in that: The shock absorbing block (186) is made of rubber.

9. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 8, wherein: The shock module (19) comprises a shock base (191), a shock cup (192), a flexible part (193), a gas cylinder (194) and a rigid part (195), the shock base (191) is fixedly connected with the spline nut (182), the spline nut (182) passes through the shock base (191), the shock cup (192) is fixedly connected with the shock base (191), the gas cylinder (194) is fixedly connected with the shock cup (192), the output end of the gas cylinder (194) is fixedly connected with the rigid part (195), and the flexible part (193) is embedded in the shock cup (192).

10. The dual degree of freedom centrifuge tube reciprocating shaking device according to claim 9, wherein: The shock cup (192) is provided with a groove (196) at the bottom end, the radius of the groove (196) is greater than the radius of the shock absorbing block (186) and the spline shaft (181), and the depth of the groove (196) is greater than or equal to the vertical displacement length of the linear bearing (187).

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