CN104173050B - Vertical lifting mechanism, lifting sickbed and medical examination equipment - Google Patents
Vertical lifting mechanism, lifting sickbed and medical examination equipment Download PDFInfo
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- CN104173050B CN104173050B CN201410323744.7A CN201410323744A CN104173050B CN 104173050 B CN104173050 B CN 104173050B CN 201410323744 A CN201410323744 A CN 201410323744A CN 104173050 B CN104173050 B CN 104173050B
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- 238000007789 sealing Methods 0.000 claims abstract description 53
- 238000010008 shearing Methods 0.000 claims description 48
- 238000001959 radiotherapy Methods 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims 1
- 238000002591 computed tomography Methods 0.000 description 5
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Abstract
The invention relates to a vertical lifting mechanism, a lifting sickbed and medical examination equipment. The lifting mechanism comprises a scissor frame, which can extend and retract along a height adjusting direction; a top plate, which is supported on the scissor frame and is provided with a first through hole; a threaded pair, which comprises a first threaded part which is a male thread and extends along the height adjusting direction, and a second threaded part which is provided with a female thread, is sheathed outside the first threaded part and is fixedly arranged on the scissor frame; a driving part, which is fixedly arranged on the scissor frame and is fixedly connected with one end, far away from the top plate, of the first threaded part; a sealing cover, which comprises a cover part, wherein one side, far away from the scissor frame, of the cover part covers the first through hole, the first threaded part can stretch out of the first through hole under the drive of the driving part to jack up the sealing cover and to enable the sealing cover to move with the first threaded part, and the cover part always covers the position above the first through hole. The invention solves the problem that the adjustable lowest height of the existing vertical lifting mechanism is limited under the situation that safe and stable operation is guaranteed.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a vertical lifting mechanism, a lifting sickbed and medical examination equipment.
Background
The existing medical examination equipment generally comprises a lifting sickbed, when a patient is subjected to medical examination, the patient lies on the lifting sickbed, and the vertical height of the lifting sickbed is adjusted according to needs. Such medical examination apparatuses include an MR (Magnetic Resonance) apparatus, a CT (Computed Tomography) apparatus, and a PET-CT (Positron Emission Computed Tomography) apparatus.
Chinese patent No. CN202776342U, announced 3/13/2013, discloses a vertical lifting mechanism for adjusting the vertical height of a lifting bed, as shown in fig. 1, the vertical lifting mechanism includes: a fork carriage 30 a; a top plate 1a supported on the fork carriage 30 a; the screw rod and nut pair comprises a screw rod 3a and a nut 20a, the screw rod 3a extends along the height adjusting direction A of the vertical lifting mechanism, and the nut 20a is fixedly arranged on the fork frame 30a and sleeved outside the screw rod 3 a; and the motor 5a is fixedly arranged on the fork frame 30a and is fixedly connected with one end of the screw rod 3a far away from the top plate 1 a.
The working principle of the vertical lifting mechanism is as follows: the motor 5a drives the screw rod 3a to rotate, so that the nut 20a and the screw rod 3a relatively move in the height adjusting direction A, and further drives the fork-shearing frame 30a to stretch, when the nut 20a moves in a downward direction A1 relative to the screw rod 3a, the part of the upper end of the screw rod 3a extending out of the nut 20a is more and more, the distance between the upper end of the screw rod 3a and the top plate 1a is smaller and smaller, and the fork-shearing frame 30a gradually contracts, so that the height of the top plate 1a is lower and lower; as the nut 20a is moved in an upward direction a2 relative to the lead screw 3a, the upper end of the lead screw 3a protrudes beyond the nut 20a less and less, and the fork 30a is extended gradually to make the height of the top plate 1a higher and higher.
However, the vertical lift mechanism has the following problems: when the top plate 1a descends to a certain height, the screw rod 3a is obstructed by the top plate 1a and cannot move further upwards relative to the nut 20a, so that the lowest height which can be adjusted by the vertical lifting mechanism is limited.
One of the methods for solving the problem is: the through hole is formed in the position, corresponding to the screw rod, on the top plate, after the top plate is lowered to a certain height, the screw rod penetrates through the through hole to further move upwards relative to the nut, and the lowest height which can be adjusted by the vertical lifting mechanism is lowered. However, this would bring about the following problems: the foreign matter above the top plate possibly penetrates through the through hole to fall into the lower part of the top plate, so that the vertical lifting mechanism is prevented from moving, and the safe and stable operation of the vertical lifting mechanism cannot be guaranteed.
Disclosure of Invention
The invention aims to solve the problems that: the lowest height that can adjust is limited when current vertical lift mechanism guarantees safe, steady operation.
In order to solve the above problems, the present invention provides a vertical lift mechanism, comprising:
the fork shearing frame can stretch along the height adjusting direction of the vertical lifting mechanism;
the top plate is supported on the fork shearing frame and is provided with a first through hole;
a thread pair, comprising: the first threaded part is provided with an external thread and extends along the height adjusting direction of the vertical lifting mechanism; the second thread piece is provided with internal threads, is sleeved outside the first thread piece and is fixedly arranged on the fork shearing frame;
the driving part is fixedly arranged on the fork shearing frame and fixedly connected with one end, far away from the top plate, of the first threaded part, and is used for driving the first threaded part to move along the internal thread so as to drive the fork shearing frame to stretch;
a seal cap, comprising: the cover part is arranged on the first through hole in a covering mode on one side, far away from the fork shearing frame, of the first through hole, the first threaded part can extend out of the first through hole along the height adjusting direction under the driving of the driving part and jack up the sealing cover, the sealing cover moves along with the movement of the first threaded part, and the cover part is always shielded above the first through hole.
Optionally, the sealing cover further comprises: the supporting part is fixedly arranged on one side, close to the fork shearing frame, of the cover part, is embedded in the first through hole and is provided with an accommodating groove with an opening facing the first threaded part;
when the sealing cover is jacked up, the end part of the first threaded piece is accommodated in the accommodating groove.
Optionally, the top plate is further provided with: the second through hole is communicated with the first through hole, is positioned on one side of the first through hole, which is far away from the fork shearing frame, and forms a counter bore with the first through hole;
when the sealing cover is not jacked up, the cover part is embedded in the second through hole.
Optionally, the sealing cover further comprises: and the limiting block is fixedly arranged on the supporting part, is positioned on one side of the first through hole close to the fork shearing frame and is overlapped with the projection of the top plate in the height adjusting direction, so that the sealing cover can be always embedded in the first through hole when being jacked up.
Optionally, the method further includes: and the weighting block is fixedly arranged with the sealing cover.
Optionally, the weight is fixedly arranged on the support portion and located on one side of the first through hole close to the fork frame, and projections of the weight and the top plate in the height adjusting direction are overlapped, so that the sealing cover can be always embedded in the first through hole when being jacked up.
Optionally, the first threaded member is a lead screw, and the second threaded member is a nut.
Optionally, the driving part includes a motor, and an output shaft of the motor is fixedly connected to the first threaded member.
Optionally, the driving part further includes: and the first threaded part is fixedly connected with an output shaft of the motor through the gear box.
Optionally, the method further includes: the base supports the fork shearing frame on one side of the fork shearing frame, which is opposite to the top plate;
the fork shearing frame comprises a fork shearing part, and the fork shearing part comprises: two rod pieces which are crossed at the middle point and are connected in a rotating way;
the number of the scissor parts is one, one rod piece of the two rod pieces of the scissor parts is rotatably connected with the top plate, the other end of the rod piece can slide along the base, one end of the other rod piece is rotatably connected with the base, and the other end of the rod piece can slide along the top plate; or,
the quantity of scissors portion is more than two, adjacent two member one-to-one of scissors portion rotates the connection, is closest to in the scissors portion of roof, the one end of a member with the roof rotates the connection, the one end of another member can be followed the roof slides, is closest to in the scissors portion of base, the one end of a member with the base rotates the connection, the one end of another member can be followed the base slides.
Optionally, the method further includes: the base supports the fork shearing frame on one side of the fork shearing frame, which is opposite to the top plate;
the fork shearing frame comprises a fork shearing part, and the fork shearing part comprises: the two rod pieces are arranged in a crossed manner and are provided with sliding grooves; the sliding blocks are embedded in the sliding grooves of the two rod pieces and can slide in the sliding grooves;
the number of the scissor parts is one, and in the two rod pieces of the scissor parts, two ends of each rod piece are respectively and rotatably connected with the top plate and the base; or,
the quantity of scissors portion is more than two, adjacent two member one-to-one of scissors portion rotates the connection, is closest to in the scissors portion of roof, the one end of every member with the roof rotates and is connected, is closest to in the scissors portion of base, the one end of every member with the base rotates and is connected.
In addition, the invention also provides a lifting sickbed, which comprises:
the vertical lift mechanism of any of the above;
the bed plate is fixedly arranged on one side of the top plate, which is back to the fork shearing frame.
In addition, the present invention also provides a medical examination apparatus including: the lifting sickbed is provided.
Optionally, the medical examination apparatus is an MR apparatus, a CT apparatus, a PET apparatus, an X-ray apparatus, a radiotherapy apparatus, or a combination apparatus having functions of the above apparatuses.
Compared with the prior art, the technical scheme of the invention has the following advantages:
after the top plate is lowered to a position flush with the end part, close to the top plate, of the first threaded part, the first threaded part can extend out of the first through hole of the top plate, so that the top plate can be lowered continuously without being hindered by the first threaded part, and the lowest height which can be adjusted by the vertical lifting mechanism is reduced; meanwhile, the sealing cover arranged on the first through hole can move along with the movement of the first threaded part, the cover part of the sealing cover is always shielded above the first through hole, foreign matters can be prevented from falling into the lower portion of the top plate through the first through hole, and the safe and stable operation of the vertical lifting mechanism is guaranteed.
Further, sealed lid still includes supporting part and stopper, and the stopper makes in the sealed lid can inlay all the time and locate first through-hole when being pushed up, has prevented that sealed lid from breaking away from the roof, and in addition, the stopper can also prevent that the foreign matter from falling into the roof below through the gap between supporting part and the first through-hole, has further guaranteed vertical lift mechanism safety, steady operation.
Furthermore, the sealing cover is fixedly provided with the weight increasing part, so that the weight of the sealing cover is increased, and the problem that the sealing cover cannot be restored to the original position due to being clamped after being jacked up is avoided.
Drawings
FIG. 1 is a schematic plan view of a conventional vertical lift mechanism for adjusting the vertical height of a lift bed;
FIG. 2 is a schematic plan view of the vertical lift mechanism of the first embodiment of the present invention, when the sealing cap is not lifted;
FIG. 3 is a schematic plan view of the vertical lift mechanism of the first embodiment of the present invention with the seal cap lifted;
FIG. 4 is a perspective view of a sealing cap of the vertical lift mechanism shown in FIGS. 2 and 3;
FIG. 5 is a partial cross-sectional view taken along the direction CC in FIG. 3;
FIG. 6 is a schematic plan view of a vertical lift mechanism in a second embodiment of the present invention;
FIG. 7 is a schematic plan view of a vertical lift mechanism in a third embodiment of the present invention;
FIG. 8 is a schematic plan view of a vertical lift mechanism in a fourth embodiment of the present invention;
FIG. 9 is a schematic plan view of a vertical lift mechanism in a fifth embodiment of the present invention;
fig. 10 is a partial plan view of a vertical lift mechanism in a sixth embodiment of the present invention;
fig. 11 is a schematic plan view of a vertical lift mechanism in a seventh embodiment of the present invention (seal cap and screw pair not shown).
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
First embodiment
As shown in fig. 2, the vertical lift mechanism of the present embodiment includes: the fork shearing frame 1 can stretch along the height adjusting direction A of the vertical lifting mechanism; a top plate 2 supported on the fork carriage 1; the thread pair comprises a first thread piece 3 with an external thread and a second thread piece 4 with an internal thread, the first thread piece 3 extends along the height adjusting direction A of the vertical lifting mechanism, and the second thread piece 4 is sleeved outside the first thread piece 3 and fixedly arranged on the fork shearing frame 1; the driving part 5 is fixedly arranged on the fork shearing frame 1 and fixedly connected with one end, far away from the top plate 2, of the first threaded part 3, and the driving part 5 is used for driving the first threaded part 3 to move along the internal thread of the second threaded part 4 so as to drive the fork shearing frame 1 to stretch; and a sealing cover 6.
The top plate 2 is provided with a first through hole 20 and a second through hole 21 communicated with the first through hole 20, and the second through hole 21 is positioned on one side of the first through hole 20 far away from the fork frame 1 and forms a counter bore with the first through hole 20.
As shown in fig. 4, the sealing cover 6 includes: a cover part 60 which is covered on the first through hole 20 at one side of the first through hole 20 far away from the fork frame 1; a support portion 61 fixedly disposed on the cover portion 60 at a side of the cover portion 60 close to the fork carriage 1, the support portion 61 being embedded in the first through hole 20 and having an accommodating groove (not labeled) with an opening facing the first screw 3; referring to fig. 3 to 5, a limiting block 62 is fixed on the supporting portion 61, and the limiting block 62 is located at a side of the first through hole 20 close to the fork carriage 1 and overlaps with a projection of the top plate 2 in the height adjusting direction a.
The working principle of the vertical lifting mechanism is as follows: as shown in fig. 2, the driving portion 5 drives the first screw member 3 to rotate, and the first screw member 3 moves along the internal thread of the second screw member 4, so that the second screw member 4 and the first screw member 3 relatively move in the height adjusting direction a, thereby driving the fork carriage 1 to extend and retract. When the second screw member 4 moves in the upward direction a1 relative to the first screw member 3, the portion of the upper end of the first screw member 3 extending beyond the second screw member 4 becomes smaller and smaller, and the fork 1 is gradually extended to make the height of the top plate 2 higher and higher; when the second screw member 4 is moved in the downward direction a2 relative to the first screw member 3, the part of the upper end of the first screw member 3 extending beyond the second screw member 4 increases, the distance between the upper end of the first screw member 3 and the top plate 2 decreases, and the fork 1 gradually contracts to lower the height of the top plate 2.
As shown in fig. 3, after the top plate 2 is lowered to a certain height, the end of the first screw member 3 is received in the receiving groove of the sealing cover 6, and the first screw member 3 is driven by the driving part 5 to extend out of the first through hole 20 in the height adjusting direction a and then jack up the sealing cover 6, so that the sealing cover 6 moves along with the movement of the first screw member 3. When the sealing cover 6 moves to the position where the limiting block 62 contacts the top plate 2, the top plate 2 can block the sealing cover 6 from continuing to extend out of the first through hole 20, so that the sealing cover 6 can be always embedded in the first through hole 20 when being jacked up, the cover portion 60 can always shield the first through hole 20, and the sealing cover 6 is prevented from being separated from the top plate 2. In addition, the limiting block 62 can prevent foreign matters from falling into the lower part of the top plate 2 through the gap between the supporting part 61 and the first through hole 20, and the safe and stable operation of the vertical lifting mechanism is further ensured. When the seal cover 6 is not lifted up, the lid portion 60 is fitted into the second through hole 21.
In the present invention, the covering of the lid portion 60 above the first through hole 20 means: the lid portion 60 is spaced from the top plate 2 where the first through hole 20 is located in the height adjustment direction a of the vertical lift mechanism, and the projection of the lid portion 60 on the top plate 2 completely covers the first through hole 20.
From the above, after the top plate 2 is lowered to the position flush with the end part of the first screw member 3 close to the top plate 2, the first screw member 3 can extend out of the first through hole 20 of the top plate 2, so that the top plate 2 can be lowered continuously without being hindered by the first screw member 3, and the lowest height which can be adjusted by the vertical lifting mechanism is reduced; meanwhile, the sealing cover 6 covering the first through hole 20 can move along with the movement of the first screw 3, and the cover part 60 of the sealing cover 6 is always shielded above the first through hole 20, so that foreign matters can be prevented from falling into the lower part of the top plate 2 through the first through hole 20, and the safe and stable operation of the vertical lifting mechanism is ensured.
As shown in fig. 3 to 5, the sealing cover 6 further includes: and a weight 7 fixedly arranged with the sealing cover 6. The weight 7 increases the weight of the sealing cover 6, and the problem that the sealing cover 6 cannot be restored to the original position due to being clamped after the sealing cover 6 is jacked up is avoided. In the present embodiment, the weight 7 is fixed on the supporting portion 61. In other embodiments, the weight 7 may be fixed at other positions of the sealing cover 6.
Further, the weight 7 is located on one side of the first through hole 20 close to the fork carriage 1, and the projections of the weight 7 and the top plate 2 in the height adjusting direction a overlap, so that the weight 7 of the present embodiment also functions as the stopper 62.
In this embodiment, the weight 7 and the limiting block 62 are two independent and oppositely arranged components. In other embodiments, the weight 7 and the limiting block 62 may be integrated into a single component, and the component has the functions of both the weight 7 and the limiting block 62. In this case, the single component has a heavy mass with respect to the sealing cover 6, so that it can perform the function of the weight 7; furthermore, the single member is located on the side of the first through hole 20 close to the fork 1 and overlaps the projection of the top plate 2 in the height adjusting direction a, so that the single member also fulfills the role of the stopper 62.
As shown in fig. 2, the vertical lift mechanism further includes: and the base 8 supports the scissor bracket 1 on the side of the scissor bracket 1 opposite to the top plate 2.
The fork frame 1 includes two fork portions 1a, 1b, and the fork portions 1a, 1b include: two link members 10 are arranged to cross at a midpoint and rotatably connected. Two rods 10 of the scissor portions 1a and 1b are rotatably connected one by one, one end of one rod 10 in the scissor portion 1a closest to the top plate 2 is rotatably connected with the top plate 2, one end of the other rod 10 is rotatably connected with the sliding block 11 to slide along the top plate 2, one end of one rod 10 in the scissor portion 1b closest to the base 8 is rotatably connected with the base 8, and one end of the other rod 10 is rotatably connected with the sliding block 11 to slide along the base 8.
As can be seen from a comparison between fig. 2 and fig. 3, when the vertical lift mechanism is used for adjusting the height, one of the rods 10 of the scissor portion 1a slides along the top plate 2, and one of the rods 10 of the scissor portion 1B slides along the base 8, so that the first threaded member 3 has a certain movement stroke in the direction B, and when the top plate 2 is located at different heights, the position of the first threaded member 3 in the direction B changes. The smaller the minimum height that the vertical lifting mechanism can adjust, the longer the movement stroke of the first screw member 3 in the direction B; the greater the minimum height that the vertical lift mechanism can adjust, the shorter the travel of the first screw member 3 in the direction B. The direction B is perpendicular to the height adjustment direction A of the vertical lifting mechanism.
In order to make the lowest height of the vertical lift mechanism adjustable as small as possible, the size of the first through hole 20 and the second through hole 21 in the direction B of the top plate 2 should be set larger to meet the requirement of the movement stroke of the first screw member 3 in the direction B.
Since the sealing cover 6 is always inserted into the first through hole 20 when being lifted up, the movement stroke of the sealing cover 6 in the direction B is zero.
It should be noted that the number of scissor portions in the scissor fork 1 should not be limited to only two. The number of the scissor portions can also be one, three or more.
With continued reference to fig. 2, in the present embodiment, the first screw member 3 is a lead screw, and the second screw member 4 is a nut.
In the present embodiment, the driving section 5 includes a motor 50 and a gear box 51. The first screw member 3 is fixedly connected to an output shaft of the motor 50 through a gear box 51.
In the present embodiment, the driving portion 5 and the second screw 4 are fixed at the intersection of two rods 10 in two adjacent scissors fork portions. In other embodiments, the driving part 5 and the second screw 4 can be fixed at other positions of the fork 1, and the following description will be given by the second to fifth embodiments.
Second embodiment
As shown in fig. 6, in the present embodiment, the driving portion 5 and the second screw 4 are fixed to two rods 10 closest to the scissor portion of the base 8, and the driving portion 5 and the second screw 4 are respectively fixed to the ends (rotational connection positions) of the two rods 10.
Third embodiment
As shown in fig. 7, in the present embodiment, the driving portion 5 and the second screw 4 are fixed to the two rods 10 closest to the scissor portion of the top plate 2, and the driving portion 5 and the second screw 4 are respectively fixed to the ends (rotational connection positions) of the two rods 10.
Fourth embodiment
As shown in fig. 8, in the present embodiment, the driving portion 5 and the second screw 4 are fixed to two rods 10 of the same scissors portion, and the driving portion 5 and the second screw 4 are respectively fixed to the two rods 10 between the end portions and the crossing position.
Fifth embodiment
As shown in fig. 9, in the present embodiment, the driving portion 5 and the second screw member 4 are fixed to different scissor portions, and the second screw member 4 is fixed to a portion of the scissor portion closest to the top plate 2, where the rod 10 is located between the end portion and the crossing position, and the driving portion 5 is fixed to a portion of the scissor portion closest to the base 8, where the rod 10 is located between the end portion and the crossing position.
Sixth embodiment
The sixth embodiment differs from any of the embodiments described above in that: in the sixth embodiment, as shown in fig. 10, the top plate 2 is provided with only the first through-holes 21 and no second through-holes; the sealing cover 6 includes only the cover portion 60, and does not include a support portion, a stopper, and a weight.
Unlike any of the above embodiments, in the present embodiment, the seal cover 6 is not always embedded in the top plate 2 regardless of whether the seal cover 6 is lifted up. Since the first screw member 3 has a certain movement stroke in the direction B and the sealing cap 6 is moved along with the movement of the first screw member 3 when it is lifted up, the sealing cap 6 also has a certain movement stroke in the direction B. When the vertical lifting mechanism is used for adjusting the height, as long as the sealing cover 6 is ensured to move in the movement stroke in the direction B, the cover part 60 can always cover the first through hole 21, and the purpose of preventing foreign matters above the top plate 2 from falling into the lower part of the top plate through the first through hole 21 can be achieved.
In the present embodiment, the surface of the cover portion 60 facing the top panel 2 is provided with a groove (not identified). When the cap portion 60 is jacked up, the end portion of the first screw member 3 is received in the groove, so that the cap portion 60 is prevented from easily falling off the first screw member 3 when jacked up.
In the solution of the present embodiment, when the vertical lift mechanism adjusts the height, the cover 60 can be always shielded above the first through hole 21 when one of the following requirements is satisfied: the dimension of the cover portion 60 in the direction B is much larger than the dimension of the first through hole 21 in the direction B, and even if the cover portion 60 moves in the direction B with the first screw 3, the upper side of the first through hole 21 can be shielded by the cover portion 60; when the cover portion 60 is about to be unable to cover the first through hole 21, the driving portion (not shown) for driving the first screw member 3 is controlled to stop continuing to start the driving portion, so that the upper portion of the first through hole 21 can be always covered by the cover portion 60.
When the lid portion 60 is not jacked up by the first screw 3, the lid portion 60 is easily dropped from the top plate 2 in a direction parallel to the top plate 2 by an external influence. To avoid this problem, a constraint may be applied to the cover portion 60.
For example, an elastic member (not shown) may be connected between the lid portion 60 and the top plate 2, and when the lid portion 60 is not lifted up, the lid portion 60 may not be separated from the top plate 2 due to the constraint of the elastic member connected to the top plate 2 even if the lid portion 60 is affected by external action. When the cover portion 60 is lifted and moved in the direction B within its movement stroke, the elastic member is deformed without preventing the cover portion 60 from moving. The elastic member may be a spring.
For another example, an annular stopper (not shown) may be provided on a surface of the top plate 2 facing the cover portion 60, the annular stopper being located on the outer periphery of the first through hole 21, and when the cover portion 60 is not lifted up, the cover portion 60 is confined in a space surrounded by the annular stopper, and the cover portion 60 is prevented from falling off the top plate 2 in a direction parallel to the top plate 2. When the cover portion 60 is jacked up and moves in the direction B within its movement stroke, the projection of the cover portion 60 in the direction a on the top panel 2 is always located within the space surrounded by the annular stopper, which is prevented from impeding the movement of the cover portion 60.
Seventh embodiment
The seventh embodiment differs from any of the embodiments described above in that: the structure of the fork shearing frame.
In the seventh embodiment, as shown in fig. 11, the fork frame includes two fork portions 1c, 1d, and the fork portions 1c, 1d include: two rod pieces 12 which are arranged in a crossed manner, wherein the two rod pieces 12 are both provided with a sliding groove 120; the sliding block 13 is embedded in the sliding grooves of the two rod pieces 120 and can slide in the sliding grooves 120.
Two rod pieces 12 of the scissor portions 1c and 1d are rotatably connected one by one, one end of each rod piece 12 is rotatably connected with the top plate 2 in the scissor portion 1c closest to the top plate 2, and one end of each rod piece 12 is rotatably connected with the base 8 in the scissor portion 1d closest to the base 8.
Unlike any of the above embodiments, when the vertical lifting mechanism of this embodiment performs height adjustment, the position of the first screw and the sealing cover in the direction B perpendicular to the height adjustment direction a does not change, that is, the moving stroke of the first screw and the sealing cover in the direction B is zero, and the fork shearing frame extends and retracts by sliding the slider 13 in the sliding groove 120.
In the present embodiment, the number of the fork parts in the fork carriage should not be limited to only two. The number of the scissor portions can also be one, three or more.
In addition, the invention also provides a lifting sickbed, which comprises: the above-mentioned vertical lifting mechanism; the bed board is fixedly arranged on one side of the top plate, which is back to the fork shearing frame.
In addition, the invention also provides medical examination equipment which comprises the lifting sickbed.
The medical examination device is an mr (magnetic resonance) device, a CT device, a PET device, an X-ray device, a radiotherapy device or a combination device having functions of the above devices. The combined device may be a PET-CT device, a PET-MR device, or the like.
In the present invention, each embodiment is written in a progressive manner, and the differences from the previous embodiments are emphasized, and the same parts in each embodiment can be referred to the previous embodiments.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. A vertical lift mechanism comprising:
the fork shearing frame can stretch along the height adjusting direction of the vertical lifting mechanism;
a top plate supported on the fork carriage;
a thread pair, comprising: the first threaded part is provided with an external thread and extends along the height adjusting direction of the vertical lifting mechanism; the second thread piece is provided with internal threads, is sleeved outside the first thread piece and is fixedly arranged on the fork shearing frame;
the driving part is fixedly arranged on the fork shearing frame and fixedly connected with one end, far away from the top plate, of the first threaded part, and is used for driving the first threaded part to move along the internal thread so as to drive the fork shearing frame to stretch;
the device is characterized in that a first through hole is formed in the top plate; also comprises the following steps of (1) preparing,
a seal cap, comprising: the cover part is arranged on the first through hole in a covering mode on one side, far away from the fork shearing frame, of the first through hole, the first threaded part can extend out of the first through hole along the height adjusting direction under the driving of the driving part and jack up the sealing cover, the sealing cover moves along with the movement of the first threaded part, and the cover part is always shielded above the first through hole.
2. The vertical lift mechanism as recited in claim 1, wherein the seal cap further comprises: the supporting part is fixedly arranged on one side, close to the fork shearing frame, of the cover part, is embedded in the first through hole and is provided with an accommodating groove with an opening facing the first threaded part;
when the sealing cover is jacked up, the end part of the first threaded piece is accommodated in the accommodating groove.
3. The vertical lift mechanism as recited in claim 2, wherein said top plate is further provided with: the second through hole is communicated with the first through hole, is positioned on one side of the first through hole, which is far away from the fork shearing frame, and forms a counter bore with the first through hole;
when the sealing cover is not jacked up, the cover part is embedded in the second through hole.
4. The vertical lift mechanism as recited in claim 2 or 3, wherein the sealing cover further comprises: and the limiting block is fixedly arranged on the supporting part, is positioned on one side of the first through hole close to the fork shearing frame and is overlapped with the projection of the top plate in the height adjusting direction, so that the sealing cover can be always embedded in the first through hole when being jacked up.
5. The vertical lift mechanism of claim 2 or 3, further comprising: and the weighting block is fixedly arranged with the sealing cover.
6. The vertical lift mechanism according to claim 5, wherein said weight is fixedly mounted on said support portion at a side of said first through hole adjacent to said fork carriage, and projections of said weight and said top plate in said height adjustment direction overlap so that said sealing cover is always inserted into said first through hole when being lifted.
7. The vertical lift mechanism of claim 1, wherein the first threaded member is a lead screw and the second threaded member is a nut.
8. The vertical lift mechanism of claim 1, wherein the drive portion comprises a motor, an output shaft of the motor being fixedly coupled to the first threaded member.
9. The vertical lift mechanism of claim 8, wherein the drive section further comprises: and the first threaded part is fixedly connected with an output shaft of the motor through the gear box.
10. The vertical lift mechanism of claim 1, further comprising: the base supports the fork shearing frame on one side of the fork shearing frame, which is opposite to the top plate;
the fork shearing frame comprises a fork shearing part, and the fork shearing part comprises: two rod pieces which are crossed at the middle point and are connected in a rotating way;
the number of the scissor parts is one, one rod piece of the two rod pieces of the scissor parts is rotatably connected with the top plate, the other end of the rod piece can slide along the base, one end of the other rod piece is rotatably connected with the base, and the other end of the rod piece can slide along the top plate; or,
the quantity of scissors portion is more than two, adjacent two member one-to-one of scissors portion rotates the connection, is closest to in the scissors portion of roof, the one end of a member with the roof rotates the connection, the one end of another member can be followed the roof slides, is closest to in the scissors portion of base, the one end of a member with the base rotates the connection, the one end of another member can be followed the base slides.
11. The vertical lift mechanism of claim 1, further comprising: the base supports the fork shearing frame on one side of the fork shearing frame, which is opposite to the top plate;
the fork shearing frame comprises a fork shearing part, and the fork shearing part comprises: the two rod pieces are arranged in a crossed manner and are provided with sliding grooves; the sliding blocks are embedded in the sliding grooves of the two rod pieces and can slide in the sliding grooves;
the number of the scissor parts is one, and in the two rod pieces of the scissor parts, two ends of each rod piece are respectively and rotatably connected with the top plate and the base; or,
the quantity of scissors portion is more than two, adjacent two member one-to-one of scissors portion rotates the connection, is closest to in the scissors portion of roof, the one end of every member with the roof rotates and is connected, is closest to in the scissors portion of base, the one end of every member with the base rotates and is connected.
12. A lifting hospital bed, comprising:
the vertical lift mechanism of any one of claims 1 to 11;
the bed plate is fixedly arranged on one side of the top plate, which is back to the fork shearing frame.
13. A medical examination apparatus, comprising: the elevating hospital bed of claim 12.
14. Medical examination device according to claim 13, characterized in that the medical examination device is an MR device, a CT device, a PET device, an X-ray device, a radiotherapy device or a combination device having the functionality of several of the above devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323744.7A CN104173050B (en) | 2014-07-08 | 2014-07-08 | Vertical lifting mechanism, lifting sickbed and medical examination equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323744.7A CN104173050B (en) | 2014-07-08 | 2014-07-08 | Vertical lifting mechanism, lifting sickbed and medical examination equipment |
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| Publication Number | Publication Date |
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| CN104173050A CN104173050A (en) | 2014-12-03 |
| CN104173050B true CN104173050B (en) | 2015-06-10 |
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| CN201410323744.7A Active CN104173050B (en) | 2014-07-08 | 2014-07-08 | Vertical lifting mechanism, lifting sickbed and medical examination equipment |
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Cited By (1)
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| EP3011940A1 (en) * | 2014-10-21 | 2016-04-27 | REAC Poland sp. z o.o. | A jack, expecially for the change of the position of the seat base in a wheelchair |
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| GB2545251B (en) * | 2015-12-11 | 2020-07-01 | Anthony Bramson Brian | A tilt apparatus for a bed |
| CN105806460A (en) * | 2016-03-04 | 2016-07-27 | 上海联影医疗科技有限公司 | Weight measuring method used for checking bed and checking bed |
| CN106241654A (en) * | 2016-10-18 | 2016-12-21 | 河北工业大学 | A kind of electric gear tooth bar promotes fork type elevator |
| CN107448583A (en) * | 2017-07-31 | 2017-12-08 | 苏州元有讯电子科技有限公司 | A kind of driven gear for robot |
| CN107227547B (en) * | 2017-08-09 | 2018-08-28 | 绍兴柯桥如川纺织科技有限公司 | A kind of liftable weaving loom |
| CN107521708B (en) * | 2017-08-15 | 2024-05-03 | 浙江大学 | Retractable air inlet channel mechanism |
| CN107436131A (en) * | 2017-08-30 | 2017-12-05 | 东莞欧达电子有限公司 | The measurement of planeness system and its measuring method of a kind of laser alignment equipment |
| CN107449446B (en) * | 2017-08-30 | 2023-04-07 | 东莞欧达电子有限公司 | Slope measuring system of laser alignment equipment and measuring method thereof |
| CN111870461A (en) * | 2020-08-03 | 2020-11-03 | 鲁芹 | Folded cascade rack is used in gynaecology and obstetrics's nursing |
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| CN104173050A (en) | 2014-12-03 |
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Address after: 201807 2258 Chengbei Road, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 2258 Chengbei Road, Jiading District, Shanghai Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |