Specimen transport device

Abstract

The present invention relates to the technical field of transfer devices, and specifically discloses a specimen transfer device, comprising: a base, moving wheels, and a push handle that rotates on the base, a carrying plate being vertically elastically slidably mounted on the base, a power assist module being further provided on the base, the power assist module comprising a power storage unit, a control unit, and a locking unit; the power storage unit comprising an outer cylinder provided on the base, a rotating rod being rotatably mounted inside the outer cylinder, a power storage member being provided between the rotating rod and the outer cylinder, a ratchet gear being provided on the rotating rod, a mounting seat being vertically elastically slidably mounted on the base, and a power storage wheel being provided at the bottom of the mounting seat. The beneficial effects of the present invention are as follows: when the device is pushed, the elastic force of the power storage member is released, driving the power storage wheel to rotate, and the power storage wheel can provide the device with an auxiliary force to move forward, thereby making it easier to push the device to start; when the device is pulled back, the power storage wheel rotates in the opposite direction to store power for the power storage member, which can effectively save manpower.

Description

Technical Field

[0001] The present invention relates to the technical field of transfer devices, and in particular to a specimen transfer device. Background Art

[0002] A specimen is a physical object or sample used for research, analysis, or display. In scientific fields such as medicine, biology, and chemistry, specimens primarily refer to biological tissues, cells, and bodily fluids such as blood, urine, and tissue sections used for experiments and research.

[0003] The Chinese patent with the authorization announcement number CN222572926U discloses a specimen tube transport device, which aims to solve the problem in the related art that when specimens are put in and out of storage or sorted, the specimen tube samples are easily disturbed by external temperature fluctuations due to the fully open storage and retrieval process, thereby affecting the activity of the samples. The transport device includes: a storage cabinet, a pick-and-place mechanism and a refrigeration element. The storage chamber in the storage cabinet is used for cold storage of specimen tubes, the refrigeration element is used for refrigeration, and the pick-and-place mechanism is used to clamp the specimen tubes into the storage chamber. The transport device realizes the closed storage and retrieval of specimen tubes by means of a pick-and-place mechanism arranged in a closed transport vehicle, reduces the time that the specimen tubes are exposed to the external environment, and reduces the risk of inactivation of samples due to external temperature fluctuations. It overcomes the problem that the specimen tube samples in the existing specimen tube transport vehicles are easily disturbed by external temperature fluctuations due to the fully open storage and retrieval process, thereby affecting the activity of the samples.

[0004] During the medical testing process, after specimens are collected, they need to be transported to the laboratory for analysis using a transfer device. Some specimens also need to be placed in dedicated storage boxes to maintain their stability before being transported using the transfer device. Typically, this specimen transport work is undertaken by female nurses. When the transfer device needs to transport specimens in batches, the weight of the device itself, combined with the load of the specimens and storage boxes, often requires a large push from the nurses to start the process. This undoubtedly increases the workload of nurses and is not conducive to their efficient work. Summary of the Invention

[0005] The present invention provides a specimen transport device, which aims to solve the technical problem in related technologies that when a transport device needs to transport specimens in batches, due to the weight of the device itself plus the load of the specimens, a nurse often needs to apply a large thrust to push it to start. This situation increases the workload of the nurses and is not conducive to their efficient and smooth work.

[0006] The cam is provided with a driving member which is adapted to move the camshaft and the driving member so as to move the camshaft in a direction of rotation and to move the camshaft in a direction of rotation relative to the driving member.

[0007] Beneficial effect: After the specimen is placed on the carrier plate, the carrier plate will drop due to gravity, thereby driving the two ratchet blocks away from each other through the connecting rod, releasing the restriction on the push plate and allowing the push plate to slide to the right. Then, the push handle is pushed to the right, and the push plate pushes the clamping plate to the right to move to the right. The first ratchet teeth disengage from the ratchet gear, and the elastic force of the force storage member is released. The driving sprocket is driven by the rotating rod to rotate clockwise, and the driving sprocket drives the driven sprocket to rotate clockwise. The driven sprocket drives the force storage wheel to rotate clockwise through the drive shaft. The clockwise rotation of the force storage wheel can assist the base to move forward. After the specimen is removed and the device is pulled back, the force storage wheel rotates counterclockwise. At this time, the force storage wheel can drive the drive shaft to rotate counterclockwise synchronously, and the driven sprocket drives the driving sprocket to rotate, so that the rotating rod rotates counterclockwise to store force for the force storage member. When the device is pushed, the elastic force of the force storage piece is released to drive the force storage wheel to rotate. The force storage wheel can provide the device with an auxiliary force to move forward, so that it is easier to push the device to start, which can effectively save manpower. When pulling the device back, the force storage wheel rotates in the opposite direction to store force in the force storage piece. When loading a large number of heavy specimens, the nurse can still easily push the device forward, making the device highly practical and improving work efficiency.

[0008] Preferably, a turn counter is provided on the rotating rod, and an alarm is also provided on the base, and the alarm is electrically connected to the turn counter.

[0009] The effect is that the circle counter enables the device to accurately detect the power storage state of the power storage member when it is moving, and when the power storage member completes power storage, it promptly reminds the worker to lift the power storage wheel.

[0010] Preferably, the driving assembly includes a driving plate arranged on the push plate, and a socket is provided on the mounting seat, which passes through the front and back, and the bottom of the socket has an inclined section and a horizontal section, the inclined section and the horizontal section are connected, and the inclined section gradually rises from left to right, and the driving plate penetrates into the socket and abuts against the inclined section or the horizontal section.

[0011] The effect is that the driving plate can be driven to move left and right by the push plate, thereby completing the lifting and lowering of the power storage wheel.

[0012] Preferably, the locking assembly includes a ratchet block mounted on the base for sliding back and forth, a second ratchet tooth engaged with the ratchet block is provided on the push plate, one end of the connecting rod is rotatably connected to the ratchet block, and the other end is rotatably matched with the bearing plate.

[0013] The effect is that it can limit the push plate from sliding to the right, thereby preventing the push plate from pushing the clamping plate to slide to the right and preventing the force storage member from being released.

[0014] Preferably, a telescopic rod is fixedly mounted on the base, and the telescopic portion of the telescopic rod is fixedly connected to the ratchet block.

[0015] Preferably, a gear fixedly connected to the push handle is rotatably mounted on the base, and a rack meshing with the gear is fixedly mounted on the push plate.

[0016] The effect is that by pushing the push handle to rotate left and right, the push plate is driven to slide left and right, which makes it easier to control the release of the force storage member and the lifting of the force storage wheel.

[0017] Preferably, a pillar is vertically slidably mounted on the base, a plurality of horizontally arranged supporting plates are fixedly mounted on the pillar along the vertical direction, a plurality of sliding seats are fixedly mounted on the bottom of the lowest supporting plate, and the sliding seats are vertically elastically slidably matched with the base.

[0018] Preferably, a driving sprocket is fixedly mounted on the rotating rod, a driven sprocket is fixedly mounted on the driving shaft, and the driving sprocket and the driven sprocket are connected via a chain transmission.

[0019] Preferably, the power storage wheel is a scroll spring fixedly installed in the outer cylinder, and the other end of the scroll spring is fixedly connected to the rotating rod.

[0020] Preferably, a mounting tube is fixedly mounted on the base, and the clamping plate is elastically slidably fitted in the mounting tube along the left-right direction.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are as follows: after the specimen is placed on the supporting plate, the supporting plate will drop due to the action of gravity, thereby driving the two ratchet blocks away from each other through the connecting rod, releasing the restriction on the push plate, and allowing the push plate to slide to the right. Then, the push handle is pushed to the right, and the push plate pushes the clamping plate to the right to move to the right. The first ratchet teeth disengage from the ratchet gear, and the elastic force of the force storage member is released. The driving sprocket is driven by the rotating rod to rotate clockwise, and the driving sprocket drives the driven sprocket to rotate clockwise. The driven sprocket drives the force storage wheel to rotate clockwise through the drive shaft. The clockwise rotation of the force storage wheel can assist the base to move forward. After the specimen is removed and the device is pulled back, the force storage wheel rotates counterclockwise. At this time, the force storage wheel can drive the drive shaft to rotate counterclockwise synchronously, and the driven sprocket drives the driving sprocket to rotate, thereby causing the rotating rod to rotate counterclockwise to store force in the force storage member. When the device is pushed, the elastic force of the force storage piece is released to drive the force storage wheel to rotate. The force storage wheel can provide the device with an auxiliary force to move forward, so that it is easier to push the device to start, which can effectively save manpower. When pulling the device back, the force storage wheel rotates in the opposite direction to store force in the force storage piece. When loading a large number of heavy specimens, the nurse can still easily push the device forward, making the device highly practical and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a cross-sectional view of the present invention.

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle.

[0026] Figure 5 It is an exploded schematic diagram of the base and the supporting plate of the present invention.

[0027] Figure 6 It is a left side view of the base of the present invention.

[0028] Figure 7 Schematic diagram of the internal structure of the base of the present invention.

[0029] Figure 8 It is a structural schematic diagram of the outer cylinder of the present invention.

[0030] Figure 9 It is a structural schematic diagram of the mounting base of the present invention.

[0031] Figure 10 It is a top view of the base of the present invention.

[0032] Figure 11 For the present invention Figure 10 Enlarged view of point C in the middle.

[0033] Figure 12 Schematic diagram of the unidirectional structure of the present invention.

[0034] Reference numerals:

[0035] 10. Base; 11. Moving wheel; 12. Side plate; 13. Push handle; 20. Pillar; 21. Loading plate; 22. Sliding seat; 23. First spring; 24. Fixed cylinder; 30. Outer cylinder; 31. Rotating rod; 32. Force storage member; 33. Turn counter; 34. Ratchet; 35. Driving sprocket; 36. Chain; 40. Mounting seat; 41. Second spring; 42. Force storage wheel; 43. Drive shaft; 44. Driven sprocket 45. Socket; 46. Inclined section; 47. Horizontal section; 50. Gear; 51. Push plate; 52. Third spring; 53. Rack; 54. Mounting tube; 55. Fourth spring; 56. Snap-on plate; 57. First ratchet tooth; 60. Drive plate; 70. Mounting platform; 71. Telescopic rod; 72. Ratchet block; 73. Second ratchet tooth; 74. Connecting plate; 75. Connecting rod; 80. Outer ring; 81. Inner shaft; 82. Ratchet. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figures 1 to 12 As shown, a specific embodiment of a specimen transport device of the present invention includes a transport module, a carrying module and a power assist module.

[0038] like Figure 1 As shown, the transport module includes a base 10 , moving wheels 11 , side panels 12 and a pusher 13 .

[0039] The base 10 is hollow and rectangular in shape. In this embodiment, the length of the base 10 is defined as the left-right direction, and the width of the base 10 is defined as the front-back direction. Four movable wheels 11 are provided at the bottom of the base 10, and are located at the four corners of the base 10. The two movable wheels 11 on the left side are universal wheels, that is, the left side of the base 10 is the driving side, which can propel the base 10 to move and turn.

[0040] A side panel 12 is fixedly mounted on the left side of the base 10. The interior of the side panel 12 is a hollow structure, and the side panel 12 is connected to the bottom of the base 10. A push handle 13 is rotatably mounted on the side panel 12, and the push handle 13 can rotate along an axis extending in the front-to-back direction. The push handle 13 is an inverted U-shaped structure, and the push handle 13 has a horizontal rod and two vertical rods. The axis of the horizontal rod extends in the front-to-back direction, and the front and rear ends of the horizontal rod are respectively fixedly connected to the two vertical rods, and the two vertical rods are both vertically arranged, and the lower ends of the two vertical rods are respectively rotatably connected to the front and rear sides of the side panel 12. The worker can hold the horizontal rod with his hands, thereby pushing the base 10 to move through the push handle 13.

[0041] like Figure 1 、 Figure 5 As shown in FIG7 , the supporting module includes a support column 20 , a supporting plate 21 , a sliding seat 22 , a first spring 23 and a fixing cylinder 24 .

[0042] There are four pillars 20, and the axes of the pillars 20 are arranged vertically. The four pillars 20 are arranged on the upper surface of the base 10 near the four corners, and the pillars 20 slide with the top wall of the base 10, that is, the lower end of the pillar 20 penetrates into the interior of the base 10.

[0043] Multiple support plates 21 are fixedly mounted on the pillars 20. The support plates 21 are arranged horizontally, with four pillars 20 vertically extending through all the support plates 21. Specimens can be placed on the upper surface of each support plate 21. In this embodiment, there are three support plates 21. In other embodiments, there can be two, four, or even more support plates 21. Guardrails are installed on the pillars 20 at positions corresponding to each layer of support plates 21, enclosing the support plates 21 and preventing specimens placed on them from falling.

[0044] Four sliding seats 22 are fixedly mounted on the bottom of the lowermost support plate 21. These sliding seats 22 are columnar structures with their axes extending vertically. The sliding seats 22 are arranged in two rows, spaced front to back, with two seats spaced side to side in each row. A first spring 23 is fixedly connected to the bottom of each sliding seat 22.

[0045] Four fixed cylinders 24 are fixedly mounted within the base 10, corresponding one-to-one with the four sliding seats 22. The fixed cylinders 24 are hollow and open at the top. The top surface of the base 10 has openings extending vertically through the fixed cylinders 24 at locations corresponding to the fixed cylinders 24. The fixed cylinders 24 extend upward through the openings and extend above the base 10. The four sliding seats 22 slide up and down within the fixed cylinders 24, and the end of the first spring 23, away from the sliding seat 22, is fixedly connected within the fixed cylinders 24. When a certain number of specimens are placed on the support plate 21, the support plate 21 is subjected to the downward force of gravity, causing the sliding seats 22 to slide downward along the fixed cylinders 24, compressing the first spring 23.

[0046] The power-assisting module includes a power storage unit, a control unit and a locking unit. The power storage unit can store or release power to assist the base 10 in moving forward when it moves, thereby reducing the worker's thrust. The control unit can control the release of the power storage unit. The locking unit is used to lock the control unit so that the control unit can only work when a certain amount of specimens are placed on the carrier module.

[0047] like Figure 6 、 Figure 7 、 Figure 8 as well as Figure 9 As shown, the power storage unit includes an outer cylinder 30, a rotating rod 31, a power storage member 32, a turn counter 33, a ratchet gear 34, a driving sprocket 35, a chain 36, a mounting seat 40, a second spring 41, a power storage wheel 42, a driving shaft 43 and a driven sprocket 44.

[0048] Two outer cylinders 30 are fixedly installed in the base 10. The two outer cylinders 30 are coaxially arranged, and the axis of the outer cylinder 30 extends in the front-to-back direction. The two outer cylinders 30 are symmetrically arranged front to back, that is, the front outer cylinder 30 is fixedly installed on the front side wall of the base 10, and the rear outer cylinder 30 is fixedly installed on the rear side wall of the base 10. The opposite ends of the two outer cylinders 30 are both open structures.

[0049] A rotating rod 31 is rotatably installed in the outer cylinder 30. The rotating rod 31 is coaxially arranged with the outer cylinder 30. The two ends of the rotating rod 31 are respectively inserted into the front and rear outer cylinders 30. That is, the rear end of the rotating rod 31 rotates with the rear outer cylinder 30, and the front end of the rotating rod 31 rotates with the front outer cylinder 30.

[0050] A force storage member 32 is fixedly connected to each of the two outer cylinders 30 . In this embodiment, the force storage member 32 is a spiral spring, and one end of the spiral spring is fixedly connected to the outer cylinder 30 , and the other end of the spiral spring is fixedly connected to the rotating rod 31 .

[0051] In this embodiment, when the elastic force of the spiral spring is released, the rotating rod 31 rotates clockwise, and when the rotating rod 31 rotates counterclockwise, it can store force in the spiral spring.

[0052] Two driving sprockets 35 are fixedly installed on the rotating rod 31 at intervals in front and back, and the two driving sprockets 35 are both located on the inner sides of the two outer cylinders 30 . The two driving sprockets 35 are coaxially arranged with the rotating rod 31 .

[0053] A revolution counter 33 is fixedly mounted on the rotating rod 31 and is used to detect the number of revolutions of the rotating rod 31. An alarm (not shown in the figure) is also fixedly mounted in the base 10. When the rotating rod 31 rotates counterclockwise, the revolution counter 33 can detect the number of revolutions of the rotating rod 31 in real time, thereby ensuring that when the spiral spring force storage reaches its limit, the alarm will sound an alarm and the spiral spring force storage can be stopped in time. This will be explained in detail later.

[0054] A ratchet gear 34 is fixedly mounted on the rotating rod 31 . The ratchet gear 34 is coaxially arranged with the rotating rod 31 and is located in the middle of the rotating rod 31 .

[0055] Two mounting blocks 40 are mounted on the bottom of the base 10, sliding upward and downward. The upper ends of the mounting blocks 40 extend into the interior of the base 10, while the lower ends extend below the base 10. The two mounting blocks 40 are spaced apart from each other. A second spring 41 is fixedly mounted on the upper surface of each mounting block 40. The end of the second spring 41, distal from the mounting block 40, is fixedly connected to the base 10. The second spring 41 provides a resilient force to return the mounting blocks 40 to their original position. It is particularly important to note that the front and rear mounting blocks 40 correspond to the outer cylinder 30, respectively.

[0056] A power storage wheel 42 is installed at the bottom of the mounting base 40. The power storage wheel 42 can rotate along an axis extending in the front-to-back direction. The front and rear power storage wheels 42 are connected by a drive shaft 43. That is, the front and rear ends of the drive shaft 43 pass through the two power storage wheels 42 respectively, and the drive shaft 43 and the power storage wheels 42 are rotated in a one-way structure. It is particularly emphasized that in this embodiment, the one-way structure is a ratchet structure (such as Figure 12 As shown in the figure, in other embodiments, the one-way structure can also be a bidirectional, reversible, one-way bearing. The one-way structure comprises an outer ring 80, an inner shaft 81, and a pawl 82. The inner shaft 81 is rotatably mounted on the inner side of the outer ring 80. The pawl 82 is rotatably mounted on the inner shaft 81 via a torsion spring. The inner side of the outer ring 80 has a ratchet groove, and one end of the pawl 82 abuts against the ratchet groove. The inner shaft 81 is coaxial and fixedly connected to the drive shaft 43, while the outer ring 80 is coaxial and fixedly connected to the power storage wheel 42.

[0057] Two driven sprockets 44 are fixedly mounted on the drive shaft 43. The two driven sprockets 44 are spaced apart from each other and are coaxially arranged with the drive shaft 43. The two driven sprockets 44 correspond one-to-one with the two driving sprockets 35, that is, the front driven sprocket 44 corresponds to the front driving sprocket 35, and the rear driven sprocket 44 corresponds to the rear driving sprocket 35.

[0058] Two vertically penetrating avoidance long holes are provided at the bottom of the base 10 . The two avoidance long holes are spaced apart from each other in the front and rear, and the two avoidance long holes correspond to the front and rear driven sprockets 44 respectively.

[0059] The driving sprocket 35 and the driven sprocket 44 are connected to each other through a chain 36 . The chain 36 passes through the avoidance long hole, so that the driving sprocket 35 and the driven sprocket 44 can transmit power to each other.

[0060] It is particularly noted that the device is advanced by pushing the push handle 13 , and after unloading is completed, the device is pulled back to its original position by pulling the push handle 13 .

[0061] When the elastic force of the force storage member 32 is released, the driving sprocket 35 is driven to rotate clockwise via the rotating rod 31, and the driving sprocket 35 drives the driven sprocket 44 to rotate clockwise. The driven sprocket 44 drives the force storage wheel 42 to rotate clockwise via the drive shaft 43. When the force storage wheel 42 rotates clockwise, the base 10 can move forward. When the elastic force of the force storage member 32 is completely released, the drive shaft 43 can no longer drive the force storage wheel 42 to rotate. However, the device still needs to move forward to the destination, so the force storage wheel 42 will continue to rotate clockwise until the device reaches the end position. At this time, the force storage wheel 42 continues to rotate clockwise and the drive shaft 43 stops rotating. The reason is that: since the power storage wheel 42 and the drive shaft 43 are connected by a one-way structure, according to the principle of the one-way rotation structure, when the drive shaft 43 serves as the driving source, the drive shaft 43 drives the inner shaft 81 to rotate clockwise, and when the inner shaft 81 rotates clockwise, the pawl 82 is engaged in the ratchet groove on the outer ring 80, thereby driving the outer ring 80 to rotate clockwise, and the outer ring 80 can drive the power storage wheel 42 to rotate clockwise; when the elastic force of the power storage member 32 is released and the device continues to move, the power storage wheel 42 rotates clockwise as the driving source, and when the power storage wheel 42 rotates clockwise, the outer ring 80 also rotates clockwise. At this time, the pawl 82 cannot be engaged with the ratchet groove on the outer ring 80, and the outer ring 80 cannot drive the inner When the shaft 81 rotates, it will not drive the drive shaft 43 to rotate, which can avoid continuing to drive the force storage part 32 to rotate and causing damage to it, and can also ensure that the device continues to move forward; similarly, when the pulling device returns, the force storage wheel 42 rotates counterclockwise. At this time, the outer ring 80 can drive the inner shaft 81 to rotate counterclockwise together, and the inner shaft 81 can drive the drive shaft 43 to rotate counterclockwise synchronously. The driven sprocket 44 drives the active sprocket 35 to rotate, so that the rotating rod 31 rotates counterclockwise to store power for the force storage part 32. The circle counter 33 will detect the number of circles rotated by the rotating rod 31. When the rotating rod 31 rotates to a certain value, it means that the power storage part 32 has reached the maximum value, and the alarm will sound an alarm.

[0062] like Figure 9As shown, both mounting bases 40 are provided with a front-to-back through-hole 45 , the bottom of the hole 45 has an inclined section 46 and a horizontal section 47 , the inclined section 46 and the horizontal section 47 are interconnected, and the inclined section 46 gradually rises from left to right.

[0063] like Figure 2 、 Figure 3 、 Figure 4 as well as Figure 7 As shown, the control unit includes a gear 50 , a push plate 51 , a third spring 52 , a rack 53 , a mounting tube 54 , a fourth spring 55 , a clamping plate 56 , a first pawl tooth 57 and a driving plate 60 .

[0064] A gear 50 is rotatably mounted within the side panel 12. The axis of the gear 50 extends in the front-to-back direction. The front and rear ends of the gear 50 are respectively fixedly connected to the two vertical rods of the push handle 13. Rotating the push handle 13 causes the gear 50 to rotate. A push plate 51 is mounted within the base 10 for horizontal sliding movement in the left-right direction. The push plate 51 is connected to the base 10 via a third spring 52. Specifically, one end of the third spring 52 is fixedly connected to the push plate 51, while the other end of the third spring 52 is fixedly connected to the base 10. A rack 53 is fixedly mounted on the push plate 51. The rack 53 meshes with the gear 50. Rotating the gear 50 causes the push plate 51 to slide in the left-to-right direction.

[0065] A mounting tube 54 is fixedly mounted on the right side wall of the base 10. The left end of the mounting tube 54 is open, and a clip plate 56 is mounted inside the mounting tube 54 for sliding movement in the left-right direction. The clip plate 56 and the mounting tube 54 are connected by a fourth spring 55, which provides elastic force to return the clip plate 56. The right end of the push plate 51 abuts against the clip plate 56. When the push plate 51 slides to the right, it pushes the clip plate 56 to move to the right.

[0066] A first pawl 57 is provided on the left side of the clamping plate 56. The first pawl 57 meshes with the ratchet gear 34. The first pawl 57 restricts the clockwise rotation of the ratchet gear 34, while the counterclockwise rotation of the ratchet gear 34 is not affected. When the push plate 51 pushes the clamping plate 56 to the right, the first pawl 57 disengages from the ratchet gear 34, and the ratchet gear 34 is freed from the restriction and can rotate clockwise.

[0067] like Figure 7 、 Figure 9 as well as Figure 10As shown, drive plates 60 are fixedly mounted on both the front and rear sides of the push plate 51. The length of the drive plates 60 extends in the front-to-back direction, and the drive plates 60 are inserted into the corresponding sockets 45 on the mounting base 40. When the drive plates 60 move to the horizontal section 47, the mounting base 40 descends, and the power storage wheels 42 contact the ground. When the drive plates 60 move to the inclined section 46, the mounting base 40 rises, and the power storage wheels 42 leave the ground.

[0068] like Figure 5 、 Figure 7 as well as Figure 11 As shown, the locking unit includes a mounting platform 70 , a telescopic rod 71 , a ratchet block 72 , a second ratchet tooth 73 , a connecting plate 74 and a connecting rod 75 .

[0069] Inside the base 10, mounting platforms 70 are provided on both the front and rear sides of the push plate 51. Two telescopic rods 71 are fixedly installed on the opposite surfaces of the mounting platforms 70. The telescopic rod 71 is composed of a rod body connected by two springs. The telescopic part of the telescopic rod 71 is fixedly installed with a ratchet block 72. The front and rear ratchet blocks 72 are symmetrically arranged, and a row of ratchets are provided on the ratchet blocks 72 along the left and right directions.

[0070] Second ratchet teeth 73 are provided on both sides of the push plate 51 at positions corresponding to the ratchet block 72. The second ratchet teeth 73 engage with the ratchet block 72. When the second ratchet teeth 73 engage with the ratchet block 72, the push plate 51 is restricted from sliding to the right, but it does not affect the push plate 51 from sliding to the left.

[0071] Connecting rods 75 are rotatably mounted on the upper surfaces of both front and rear ratchet blocks 72, rotating along an axis extending in the left-right direction. A connecting plate 74 is provided at the bottom of the lowest carrier plate 21, and the upper ends of the connecting rods 75 are rotatably engaged with the connecting plate 74. When a specimen is placed on the carrier plate 21, the carrier plate 21 descends, driving the two ratchet blocks 72 away from each other via the connecting rods 75. Specifically, the front ratchet block 72 slides forward, while the rear ratchet block 72 slides rearward, thereby releasing the restraint on the push plate 51 and allowing it to slide to the right.

[0072] In the initial state, the push handle 13 is in a vertical position, the drive plate 60 is located on the horizontal section 47 in the socket 45, and the power storage wheel 42 is in contact with the ground. After the specimen is placed on the carrier plate 21, the carrier plate 21 will drop under the action of gravity, thereby driving the two ratchet blocks 72 away from each other through the connecting rod 75, releasing the restriction on the push plate 51 and allowing the push plate 51 to slide to the right. Then, push the push handle 13 to the right, and the push handle 13 will rotate to the right by a certain angle. The gear 50 rotates, driving the push plate 51 to slide to the right. The push plate 51 pushes the clamping plate 56 to move to the right, and the first ratchet tooth 57 disengages from the ratchet gear 34. The ratchet gear 34 is released from the restriction and can rotate clockwise. Then the elastic force of the force storage member 32 is released, and the driving sprocket 35 is driven to rotate clockwise through the rotating rod 31. The driving sprocket 35 drives the driven sprocket 44 to rotate clockwise, and the driven sprocket 44 drives the force storage wheel 42 to rotate clockwise through the drive shaft 43. The clockwise rotation of the force storage wheel 42 can assist the base 10 to move forward, that is, the force storage wheel 42 will give the device a forward thrust to assist the device to start. Until the elastic force of the force storage member 32 is released, the drive shaft 43 can no longer drive the force storage wheel 42 to rotate, but the device still needs to continue to move forward to the destination, so the force storage wheel 42 will continue to rotate clockwise until the device reaches the end position. At this time, the force storage wheel 42 continues to rotate clockwise, and the drive shaft 43 no longer rotates.

[0073] When the specimen is removed and the device is pulled back, the force storage wheel 42 rotates counterclockwise. At this time, the force storage wheel 42 can drive the driving shaft 43 to rotate counterclockwise synchronously, and the driven sprocket 44 drives the active sprocket 35 to rotate, so that the rotating rod 31 rotates counterclockwise to store force for the force storage member 32. The circle counter 33 will detect the number of circles rotated by the rotating rod 31. When the rotating rod 31 rotates to a certain value, it means that the force storage member 32 has reached the maximum value, and the alarm will sound an alarm. Then use your foot to support the base 10 and pull the push handle 13 to the left. The push handle 13 will rotate and tilt to the left at a certain angle. At the same time, the push plate 51 will also slide to the left a certain distance (at this time, the device is in an unloaded state, the connecting plate 74 rises, and the ratchet block 72 engages with the second ratchet teeth 73, so the push plate 51 will not rebound to the right). The driving plate 60 moves to the left to above the inclined section 46, and the second spring 41 drives the mounting seat 40 to rise, so that the power storage wheel 42 leaves the ground, and then continues to pull the device back to its original position.

[0074] When used again, the specimen is placed on the supporting plate 21, the ratchet block 72 disengages from the second ratchet tooth 73, and the elastic force of the third spring 52 drives the push plate 51 to move to the right, so that the push handle 13 returns to the vertical state. At the same time, the driving plate 60 reaches the horizontal section 47 along the inclined section 46, driving the mounting seat 40 to descend, and the power storage wheel 42 contacts the ground again. It is the same as the above principle and can be used. It is particularly emphasized that the elastic force of the fourth spring 55 is greater than the elastic force of the second spring 41.

[0075] The working principle of the present invention is as follows: in the initial state, the push handle 13 is in a vertical state, the drive plate 60 is located on the horizontal section 47 in the socket 45, and the power storage wheel 42 is in contact with the ground. After the specimen is placed on the carrier plate 21, it will be affected by gravity and the carrier plate 21 will drop, thereby driving the two ratchet blocks 72 away from each other through the connecting rod 75, releasing the restriction on the push plate 51, and allowing the push plate 51 to slide to the right. Then, the push handle 13 is pushed to the right, and the push handle 13 will rotate to the right by a certain angle. The gear 50 rotates, driving the push plate 51 to slide to the right. The push plate 51 pushes the clamping plate 56 to the right and moves to the right. The first ratchet tooth 57 disengages from the ratchet gear 34, and the ratchet gear 34 is released from the restriction and can rotate clockwise. Then the elastic force of the force storage member 32 is released, and the driving sprocket 35 is driven to rotate clockwise through the rotating rod 31. The driving sprocket 35 drives the driven sprocket 44 to rotate clockwise, and the driven sprocket 44 drives the force storage wheel 42 to rotate clockwise through the drive shaft 43. The clockwise rotation of the force storage wheel 42 can assist the base 10 to move forward, that is, the force storage wheel 42 will give the device a forward thrust to assist the device to start. Until the elastic force of the force storage member 32 is released, the drive shaft 43 can no longer drive the force storage wheel 42 to rotate, but the device still needs to continue to move forward to the destination, so the force storage wheel 42 will continue to rotate clockwise until the device reaches the end position. At this time, the force storage wheel 42 continues to rotate clockwise, and the drive shaft 43 no longer rotates. After the specimen is removed, when the device is pulled back, the power wheel 42 rotates counterclockwise. At this time, the power wheel 42 can drive the drive shaft 43 to rotate counterclockwise synchronously, and the driven sprocket 44 drives the active sprocket 35 to rotate, thereby causing the rotating rod 31 to rotate counterclockwise, storing power for the power storage member 32. The circle counter 33 will detect the number of circles of the rotating rod 31. When the rotating rod 31 rotates to a certain value, it means that the power storage member 32 has reached the maximum value, and the alarm will sound an alarm. Then, use your foot to support the base 10 and pull the push handle 13 to the left. The push handle 13 will rotate and tilt to the left by a certain angle. At the same time, the push plate 51 will also slide to the left by a certain distance. The drive plate 60 moves to the left to above the inclined section 46. The second spring 41 drives the mounting base 40 to rise, causing the power wheel 42 to leave the ground, and then continue to pull the device back to its original position. When it is used again, the specimen is placed on the supporting plate 21, the ratchet block 72 disengages from the second ratchet tooth 73, and the elastic force of the third spring 52 drives the push plate 51 to move to the right, so that the push handle 13 returns to the vertical state. At the same time, the driving plate 60 reaches the horizontal section 47 along the inclined section 46, drives the mounting seat 40 to descend, and the power storage wheel 42 contacts the ground again. It is the same as the above principle and can be used.

[0076] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A specimen transport device, comprising: The base, the movable wheel and the push handle rotated on the base are characterized in that a bearing plate is vertically elastically slidably mounted on the base, and a power-assisting module is also provided on the base, which includes a power storage unit, a control unit and a locking unit; The power storage unit includes an outer cylinder provided on the base, a rotating rod is rotatably installed in the outer cylinder, a power storage member is provided between the rotating rod and the outer cylinder, a ratchet gear is provided on the rotating rod, a mounting seat is vertically elastically slidably installed on the base, a power storage wheel is provided at the bottom of the mounting seat, and a drive shaft connected to the rotating rod through a one-way structure is rotatably installed on the power storage wheel; The control unit includes a push plate that slides elastically left and right horizontally on the base, and the push plate cooperates with the push handle. A clamping plate is also installed on the base for elastic sliding left and right. The clamping plate is provided with a first ratchet tooth that meshes with the ratchet gear. The push plate is provided with a driving assembly so that the power storage wheel can descend when the push plate moves right and rise when it moves left. The locking unit includes a locking assembly mounted on the base for sliding back and forth to limit the push plate from sliding to the right. The locking assembly is connected to the bearing plate by a connecting rod, and the sliding of the locking assembly is controlled by the lifting and lowering of the bearing plate.

2. The specimen transport device according to claim 1, characterized in that: A turn counter is provided on the rotating rod, and an alarm is also provided on the base. The alarm is electrically connected to the turn counter.

3. The specimen transport device according to claim 1, characterized in that: The driving assembly includes a driving plate arranged on the push plate, and a socket is provided on the mounting seat, which is connected to the front and back. The bottom of the socket has an inclined section and a horizontal section. The inclined section and the horizontal section are connected, and the inclined section gradually rises from left to right. The driving plate is inserted into the socket and abuts against the inclined section or the horizontal section.

4. The specimen transport device according to claim 1, characterized in that: The locking assembly includes a ratchet block mounted on the base for forward and backward sliding movement, a second ratchet tooth engaged with the ratchet block is provided on the push plate, one end of the connecting rod is rotatably connected to the ratchet block, and the other end is rotatably matched with the bearing plate.

5. The specimen transport device according to claim 4, characterized in that: A telescopic rod is fixedly installed on the base, and the telescopic part of the telescopic rod is fixedly connected to the ratchet block.

6. The specimen transport device according to claim 1, characterized in that: A gear fixedly connected to the push handle is rotatably mounted on the base, and a rack meshing with the gear is fixedly mounted on the push plate.

7. A specimen transport device according to any one of claims 1 to 6, characterized in that: A pillar is vertically slidably installed on the base, and a plurality of horizontally arranged bearing plates are fixedly installed on the pillar along the vertical direction. A plurality of sliding seats are fixedly installed on the bottom of the lowest bearing plate, and the sliding seats are vertically elastically slidably matched with the base.

8. The specimen transport device according to claim 7, characterized in that: A driving sprocket is fixedly mounted on the rotating rod, a driven sprocket is fixedly mounted on the driving shaft, and the driving sprocket and the driven sprocket are connected via a chain transmission.

9. The specimen transport device according to claim 8, characterized in that: The power storage wheel is a scroll spring fixedly installed in the outer cylinder, and the other end of the scroll spring is fixedly connected to the rotating rod.

10. The specimen transport device according to claim 9, characterized in that: A mounting tube is fixedly mounted on the base, and the clamping plate is elastically slidably fitted in the mounting tube along the left-right direction.

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