CN214360020U - Lifting mechanism and treatment bed - Google Patents

Abstract

The utility model belongs to the technical field of radiation therapy, a elevating system and treatment couch are disclosed. The lifting mechanism is used for driving a load to lift and comprises a base, a driving source and a power rod, wherein the lower end of the power rod is connected with the base in a rotating mode, the upper end of the power rod is connected with the load in a rotating mode, an output shaft is connected to the output end of the driving source in a transmission mode, the driving source can drive the lower end of the power rod to move in a reciprocating mode in the horizontal direction through the output shaft, and therefore the load can lift relative to the base. Compared with the prior art, the lifting mechanism does not need to pit before installation and use, and reduces the installation and maintenance cost. Simultaneously, the driving source sets up in the lower extreme of power pole, and the driving source is than far away apart from the upper end of power pole, and the position distance of driving source and patient's head is far away promptly, avoids the noise that produces in the operation of lift in-process driving source to disturb the patient to improve patient experience.

Description

Lifting mechanism and treatment bed

Technical Field

The utility model relates to a radiation therapy technical field especially relates to an elevating system and treatment couch.

Background

Radiation treatment beds are used to support patients during treatment of cancer patients. Since the treatment couch requires a low bed height for the patient to be in position when the patient gets on or off the treatment couch, the low bed height should not usually exceed 700mm according to ergonomic principles. After the patient lies on the treatment bed, the doctor operates the treatment bed to ascend so as to align the marking line on the body surface of the patient with the laser lamp, so that the cancerous focus is flush with the treatment center in height, and then the patient focus moves accurately and is positioned to the irradiation center of the radiotherapy equipment to be treated.

The existing lifting mechanism of the treatment bed has the following modes:

1. adopt lead screw or rack and pinion's transmission mode to go up and down, the lift stroke mainly relies on the height of base member, in order to obtain great stroke, the base member need accomplish enough high, leads to treatment table self height to increase, in order to satisfy lower position of going to bed, must with treatment table whole mount to the pit to the patient gets on or off the bed. Because the pit needs to be dug before installation, the foundation construction requirement and the construction cost of the hospital machine room are increased, and meanwhile, great installation and maintenance difficulties exist in the primary installation and daily maintenance of the treatment bed.

In addition, because the lead screw passes through motor drive and realizes going up and down, if the motor setting is unfavorable for convenient maintenance in the pit, consequently with the motor setting at the top of lead screw, the position distance of motor and patient's head is nearer, directly undertakes the load at vertical lift in-process motor, leads to the motor operation sound great. However, the running speed of the gear rack is low, noise can be generated in the transmission process, and the noise is high along with the increase of the speed. Therefore, the arrangement of the motor and the gear rack which mainly generate the sound in the two modes is close to the patient, and the treatment experience of the patient is influenced.

2. The scissor fork mechanism is adopted to realize lifting, the screw rod is adopted to swing and drive, the lifting is higher, the screw rod nut is farther away from the screw rod supporting end, the supporting rigidity is poorer, a patient is difficult to be firmly supported, the falling condition is easy to occur, and the safety is poorer.

3. The double-layer scissors fork is similar to the scissors fork mechanism and is driven by a cylinder, an oblique cylinder is used for driving, a supporting point is arranged at the bottom end, and the supporting rigidity is poor; meanwhile, the cylinder has many transmission accessories and large noise, and is not suitable for medical equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an elevating system and treatment bed, the installation maintenance cost is low, and the noise is little, and support intensity is good.

To achieve the purpose, the utility model adopts the following technical proposal:

a lifting mechanism for driving a load to lift comprises a base, a driving source and a power rod, wherein the lower end of the power rod is connected with the base in a rotating mode, the upper end of the power rod is connected with the load in a rotating mode, an output shaft is connected to the output end of the driving source in a transmission mode, the driving source can drive the lower end of the power rod to reciprocate in the horizontal direction through the output shaft, and therefore the load can lift relative to the base.

Preferably, the number of the power rods is two.

Preferably, two power rods are hinged in a crossed mode to form an X-shaped structure.

Preferably, the driving source is connected with a first screw pair and a second screw pair in a transmission manner, the driving source is connected with one of the power rods through the first screw pair in a transmission manner, the driving source is connected with the other power rod through the second screw pair in a transmission manner, and the rotation directions of the first screw pair and the second screw pair are opposite.

Preferably, the lower end of the power rod is in transmission connection with the corresponding lead screw pair through a lower hinge base, the upper end of the power rod is rotatably connected to the load through an upper hinge base, and at least one of the upper hinge bases is slidably arranged on the load.

Preferably, the load lifting device further comprises a driven rod, and the power rod drives the driven rod to move when driving the load to lift.

Preferably, the power rod and the driven rod are hinged in a cross mode to form an X-shaped structure.

Preferably, the drive source is connected to a screw pair through the output shaft, and the screw pair is connected to the power rod in a transmission manner.

Preferably, the two lower hinge seats are respectively hinged to the lower end of the driven rod and the lower end of the power rod in a one-to-one correspondence manner, the two upper hinge seats are respectively hinged to the upper end of the driven rod and the upper end of the power rod in a one-to-one correspondence manner, the lead screw pair is in transmission connection with the lower hinge seat connected with the power rod, the upper end of the power rod is rotatably connected to the load through the upper hinge seat, the upper end of the driven rod is rotatably connected to the load through the upper hinge seat, and at least one of the upper hinge seats is slidably arranged on the load.

In order to achieve the above purpose, the utility model also provides a treatment bed, which comprises the lifting mechanism.

The utility model has the advantages that:

the utility model provides a lifting mechanism, lower extreme through driving source drive power pole is along horizontal direction reciprocating motion, just can realize the lift of load for the base, compares with prior art, need not beat the pit before the installation is used, has reduced the cost of installation and maintenance. Simultaneously, the driving source sets up in the lower extreme of power pole, and the driving source is than far away apart from the upper end of power pole, and the position distance of driving source and patient's head is far away promptly, avoids the noise that produces in the operation of lift in-process driving source to disturb the patient to improve patient experience.

The utility model provides a treatment bed, including foretell elevating system, elevating system realizes the lift of load for satisfy the different demands of patient in treatment process, improve user experience and feel.

Drawings

Fig. 1 is a schematic diagram of a lifting mechanism according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a form of a lifting mechanism provided in the second embodiment of the present invention;

fig. 3 is a schematic view of another form of the lifting mechanism according to the second embodiment of the present invention;

fig. 4 is a schematic structural view of a lifting mechanism provided in the third embodiment of the present invention at a viewing angle;

fig. 5 is a schematic structural view of the lifting mechanism provided in the third embodiment of the present invention at another viewing angle;

fig. 6 is a schematic structural view of a lifting mechanism provided in the fourth embodiment of the present invention at a viewing angle;

fig. 7 is a schematic structural view of the lifting mechanism provided in the fourth embodiment of the present invention at another viewing angle.

In the figure:

100. a load; 101. a guide rail;

1. a base; 11. a slide rail 11;

2. a drive source; 3. a power rod; 4. a lower hinge base; 41. a slider; 5. an upper hinge base; 51. a slider; 6. a first lead screw pair; 7. a second lead screw pair; 8. a driven lever; 9. and a screw pair.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

The embodiment provides a lifting mechanism which is suitable for a treatment bed. The lifting mechanism is used for driving the load 100 to lift, wherein the load 100 can be a bed board or a tray and the like, the lifting mechanism realizes the lifting of the bed body through the tray, and when the bed body is lowered to be at a low position, a patient can conveniently take a position; when the bed body gradually rises to a certain height, the patient can be conveniently treated by the radiotherapy equipment.

As shown in fig. 1-4, the lifting mechanism comprises a base 1, a driving source 2 and a power rod 3, wherein the driving source 2 is arranged on the base 1, and the base 1 plays a role of integral support. The driving source 2 may be a driving cylinder, a driving motor, or the like, and the driving source 2 is preferably a driving motor in the present embodiment. The output end of the driving source 2 is connected with an output shaft in a transmission mode, the output shaft is connected to the power rod 3, the lower end of the power rod 3 is rotatably connected with the base 1, the upper end of the power rod 3 is rotatably connected with the load 100, and the driving source 2 can drive the lower end of the power rod 3 to reciprocate in the horizontal direction through the output shaft, so that the load 100 can lift relative to the base 1.

According to the lifting mechanism provided by the embodiment, the lower end of the power rod 3 is driven by the driving source 2 to reciprocate along the horizontal direction, the lower end of the power rod 3 rotates relative to the base 1, and the upper end of the power rod 3 rotates relative to the load 100, so that the load 100 can be lifted relative to the base 1. Simultaneously, the driving source 2 sets up in the lower extreme of power pole 3, and the upper end of driving source 2 distance power pole 3 is than far away, and the position distance of driving source 2 and patient's head is far away promptly, avoids the noise that the operation of in-process driving source 2 produced to disturb the patient to improve patient experience.

In particular, the number of power bars 3 may be one. One side of the driving source 2 is provided with an output shaft, the output shaft is connected to the lower end of the power rod 3 through a lead screw pair 9 in a transmission manner, the lower end of the power rod 3 is rotatably connected to the base 1, and the upper end of the power rod 3 is rotatably connected to the load 100. The driving source 2 drives the lower end of the power rod 3 to move horizontally, and the upper end of the power rod 3 can rotate relative to the load 100 while the lower end of the power rod 3 rotates relative to the base 1, and drives the load 100 to lift.

Further, connect through hinge seat 4 rotation down between the lower extreme of power pole 3 and lead screw pair 9, lead screw pair 9 specifically includes lead screw and screw nut, and driving source 2 passes through output shaft and connects in the lead screw, and screw nut wears to locate screw nut, and along with the rotation of lead screw, screw nut moves along the axial direction of lead screw, and screw nut connects in hinge seat 4 down to hinge seat 4 can slide for base 1 under the drive. Preferably, a sliding block 41 is arranged at the bottom of the lower hinge base 4, a sliding rail 11 is arranged on the base 1 along the horizontal direction, and the sliding block 41 is in sliding fit with the sliding rail 11 to play a guiding role so as to ensure the smoothness of sliding of the lower hinge base 4. Since the lower hinge block 4 is always in a sliding state, the lower hinge block 4 can also be referred to as a sliding hinge block at this time. Preferably, a sliding block 51 is disposed at the bottom of the upper hinge base 5, a guide rail 101 is disposed at the bottom of the load 100 along the horizontal direction, and the sliding block 51 is slidably engaged with the guide rail 101 to play a guiding role, so as to ensure the smoothness of the sliding of the upper hinge base 5. Since the upper hinge block 5 is always in the sliding state, the upper hinge block 5 can also be referred to as a sliding hinge block at this time.

Further, the upper end of the power rod 3 is rotatably connected to the load 100 through an upper hinge mount 5, the upper hinge mount 5 is fixedly disposed with respect to the load 100, and the upper hinge mount 5 may also be referred to as a fixed hinge mount at this time. Alternatively, the upper hinge base 5 may be directly fixed to the bottom of the load 100 by bolts, or the sliding block 51 at the bottom of the upper hinge base 5 is fixed to the guide rail 101 at the bottom of the load 100 by a locking member, so as to fix the upper hinge base 5 and the load 100, in this way, the lower hinge base 4 and the upper hinge base 5 have the same structure, except that the hinge base fixedly disposed with respect to the load 100 or the base 1 is the fixed hinge base, so that the fixed hinge base and the sliding hinge base do not need to be separately produced, and can be used in common, thereby effectively reducing the production cost.

It should be noted that, if the load 100 is heavy, a corresponding limit structure may be added to assist in carrying the load 100.

Example two

As shown in fig. 2-3, the difference between this embodiment and the first embodiment is that the number of power rods 3 is different, and the number of power rods 3 in this embodiment is two. There is no mutual constraint relation between the two power rods 3, and the two power rods 3 can rotate towards the direction of approaching to or departing from each other, so as to realize the lifting of the load 100. As shown in fig. 2, the driving source 2 may be disposed on one side of the two power rods 3, an output shaft of the driving source 2 is connected to a lead screw of the lead screw pair 9, the lead screw penetrates through two lead screw nuts, the two lead screw nuts are connected to the two lower hinge seats 4 in a one-to-one correspondence, the two lower hinge seats 4 are connected to lower ends of the two power rods 3 in a one-to-one correspondence, the lower hinge seats 4 can slide relative to the base 1, and at this time, the lower hinge seats 4 are sliding hinge seats, so that the two power rods 3 can move in a horizontal direction by using one driving source 2. The upper ends of the two power rods 3 are rotatably connected to the load 100 through the upper hinge bases 5 in a one-to-one correspondence. The upper hinge base 5 is fixed relative to the load 100, and at this time, the upper hinge base 5 is a fixed hinge base, and compared with the first embodiment, the present embodiment has the advantages that the two power rods 3 jointly realize the lifting of the load 100, the supporting effect is good, and the reliability is high.

Alternatively, as shown in fig. 3, the driving source 2 may also be disposed between two power rods 3, output shafts are disposed on two sides of the driving source 2, the driving source 2 is drivingly connected with a first lead screw pair 6 and a second lead screw pair 7, one of the output shafts is drivingly connected to one of the power rods 3 through the first lead screw pair 6, the other output shaft is drivingly connected to the other power rod 3 through the second lead screw pair 7, and the rotation directions of the first lead screw pair 6 and the second lead screw pair 7 are opposite. The two power bars 3 can be moved in directions to approach or separate from each other, thereby achieving the lifting of the load 100. It should be noted that, in order to avoid interference between the two power rods 3 during movement, the lower ends of the two power rods 3 need to be offset from each other by a certain distance.

EXAMPLE III

As shown in fig. 4-5, the present embodiment is different from the second embodiment in that the two power rods 3 are hinged in a crossed manner to form an X-shaped structure, so that the two power rods 3 are mutually restricted while the two power rods 3 are driven by the driving source 2. Specifically, the rotating shaft is coaxially arranged in the middle of the two power rods 3 in a penetrating manner, and the two power rods 3 can rotate relative to the rotating shaft.

Adopt X type structure, enclose into isosceles triangle between two power bars 3 and the base 1, power bar 3 horizontal movement's distance L is equivalent to isosceles triangle's base, power bar 3 ascending distance Z is equivalent to isosceles triangle's height, obtain the change of height through the change of base, the contained angle between power bar 3 and the base 1 is theta, therefore Z equals L tan theta, if the angle of contained angle theta is greater than 45, tan theta > 1, through less horizontal movement distance, just can obtain great rising distance, have the amplification of a certain proportion.

Further, the driving source 2 is disposed between the two power rods 3, the driving source 2 in this embodiment is preferably a dual output shaft motor, output shafts are disposed on two sides of the driving source 2, one of the output shafts is drivingly connected to the lower end of one of the power rods 3 through a first lead screw pair 6, and the other output shaft is drivingly connected to the lower end of the other power rod 3 through a second lead screw pair 7. By arranging the first lead screw pair 6 and the second lead screw pair 7 in opposite rotating directions, when the lower ends of the two power rods 3 are close to each other, the two power rods 3 rotate relative to the rotating shaft, and when the upper ends of the two power rods 3 are close to each other, the load 100 is lifted; when the lower ends of the two power rods 3 are away from each other, the two power rods 3 rotate relative to the rotating shaft, and the upper ends of the two power rods 3 are away from each other, and simultaneously, the load 100 is lowered. By adopting the mode, both sides of the driving source 2 can output torque, and the driving device has the advantages of large moment and good synchronism.

Optionally, the driving source 2 is a single-output-shaft motor, the output end of the driving source 2 is provided with only one output shaft, the output shafts are respectively in transmission connection with a first lead screw pair 6 and a second lead screw pair 7 through a power splitting mechanism, the first lead screw pair 6 is in transmission connection with the lower end of one of the power rods 3, and the second lead screw pair 7 is in transmission connection with the lower end of the other power rod 3.

Specifically, the power splitting mechanism is provided with an inlet end, a first outlet end and a second outlet end, the inlet end is provided with a driving bevel gear, the first outlet end is provided with a first driven bevel gear, the second outlet end is provided with a second driven bevel gear, the first driven bevel gear and the second driven bevel gear are arranged just opposite to each other, the driving bevel gear is arranged between the first driven bevel gear and the second driven bevel gear and is respectively meshed with the first driven bevel gear and the second driven bevel gear, the output shaft penetrates through the driving bevel gear and is fixedly connected with the driving bevel gear, the driving bevel gear 2 drives the driving bevel gear to rotate through the output shaft and simultaneously drives the first driven bevel gear and the second driven bevel gear to rotate, and the axis of the driving bevel gear is respectively perpendicular to the axis of the first driven bevel gear and the axis of the second driven bevel gear so as to achieve the purpose of driving and reversing. The first screw pair 6 penetrates through the first driven bevel gear to drive the screw in the first screw pair 6 to rotate, and the second screw pair 7 penetrates through the second driven bevel gear to drive the screw in the second screw pair 7 to rotate. In this way, for the driving source 2 with only one output shaft, the power splitting mechanism can also realize the movement of the two power rods 3, and has the advantages of high transmission efficiency and good reliability.

Further, the lower end of the power rod 3 is in transmission connection with the corresponding lead screw pair 9 through the lower hinge base 4, the lower end of the power rod 3 can rotate relative to the lower hinge base 4, the lower hinge base 4 can slide relative to the base 1 as the lower end of the power rod 3 can reciprocate along the horizontal direction, and at this time, the lower hinge base 4 can be called as a sliding hinge base. Specifically, a first lead screw nut in the first lead screw pair 6 is sleeved on a first lead screw, the lead screw nut is connected to one of the lower hinge bases 4, and when the first lead screw nut rotates around the first lead screw, the first lead screw moves along the axis direction of the first lead screw nut and drives the lower hinge base 4 to slide. It can be understood that the working principle of the second screw pair 7 in transmission connection with the other lower hinge base 4 is similar to the working principle of the first screw pair 6 in transmission connection with one of the lower hinge bases 4, and therefore detailed description is omitted.

Optionally, a sliding block 41 is arranged at the bottom of the lower hinge base 4, a sliding rail 11 is arranged on the base 1 along the horizontal direction, and the sliding block 41 is in sliding fit with the sliding rail 11, so that a guiding effect is achieved, and the stability of the lower end of the power rod 3 in the horizontal movement process is ensured.

Further, the upper end of the power rod 3 is rotatably connected to the load 100 through the upper hinge base 5, and the upper end of the power rod 3 can rotate with respect to the load 100. At least one of the upper hinge bases 5 is slidably arranged on the load 100, and specifically, the following two matching modes are provided between the upper hinge base 5 and the load 100;

firstly, the upper hinge seats 5 corresponding to the upper ends of the two power rods 3 can both slide relative to the load 100, and in this way, the sliding stroke of the power rods 3 is large, so that the lifting adjusting range is large. Specifically, sliding blocks 51 are arranged on the tops of the two upper hinge seats 5, a guide rail 101 is arranged on the bottom of the load 100 along the horizontal direction, and the sliding blocks 51 are in sliding fit with the guide rail 101, so that a guiding effect is achieved, and the stability of the upper end of the power rod 3 in the horizontal movement process is ensured. Two sliding blocks 51 share one guide rail 101, so that the production cost is saved.

Secondly, one of the upper hinge seats 5 corresponding to the upper ends of the two power rods 3 slides relative to the load 100, and by adopting the mode, one of the two upper hinge seats 5 slides, and the other one is fixed, namely the upper hinge seats 5 corresponding to the upper ends of the two power rods 3 are respectively a fixed hinge seat and a sliding hinge seat, so that the supporting and fixing strength is good, and the reliability is good. Specifically, a sliding block 51 is arranged at the top of one of the upper hinge seats 5, a guide rail 101 is arranged at the bottom of the load 100 along the horizontal direction, and the sliding block 51 is in sliding fit with the guide rail 101, so that a guiding effect is achieved, and the stability of the upper end of the power rod 3 in the horizontal movement process is ensured.

Alternatively, sliding blocks 51 may be provided on the tops of the two upper hinge bases 5, the sliding block 51 corresponding to the upper hinge base 5 that needs to slide is slidably fitted to the guide rail 101, and the sliding block 51 corresponding to the upper hinge base 5 that does not need to slide is locked on the guide rail 101 by a locking member. By adopting the mode, the upper hinge seat 5 has the same structure, the switching of the upper hinge seat 5 between the fixed mode and the sliding mode can be realized by utilizing the locking piece, the production and manufacturing cost is saved, and the use is convenient and flexible.

Example four

As shown in fig. 6 to 7, the present embodiment differs from the third embodiment in that the number of power rods 3 is not two, but one. The lifting mechanism further comprises a driven rod 8, the power rod 3 drives the driven rod 8 to move when driving the load 100 to lift, the driving source 2 directly realizes the lifting of the load 100 through the power rod 3, and the driven rod 8 plays a following role and plays an auxiliary supporting effect.

When the power rod 3 and the driven rod 8 are not cross-hinged to form an X-shaped structure, the power rod 3 and the driven rod 8 are not in a mutual constraint relation. The driving source 2 can be arranged on one side of the power rod 3 and the driven rod 8, an output shaft of the driving source 2 is connected to a lead screw of the lead screw pair 9, the lead screw penetrates through two lead screw nuts, the two lead screw nuts are connected to the two lower hinge seats 4 in a one-to-one correspondence mode, the two lower hinge seats 4 are connected to the lower end of the power rod 3 and the lower end of the driven rod 8 in a one-to-one correspondence mode, the lower hinge seat 4 corresponding to the power rod 3 can slide relative to the base 1, the lower hinge seat 4 corresponding to the power rod 3 is a sliding hinge seat at the moment, the lower hinge seat 4 corresponding to the driven rod 8 is fixed relative to the base 1, and the lower hinge seat 4 corresponding to the driven rod 8 is a fixed hinge seat at the moment. The screw rod can be only arranged in the lower hinge seat 4 corresponding to the driven rod 8 in a penetrating mode, the screw rod and the lower hinge seat 4 do not have a transmission relation, and the lower hinge seat 4 corresponding to the driven rod 8 only plays a supporting role for the screw rod. The upper ends of the power rods 3 and the driven rods 8 are rotatably connected to the load 100 through two upper hinge seats 5 in a one-to-one correspondence. Compared with the first embodiment, the lifting of the load 100 is realized by the power rod 3 and the driven rod 8 together, the supporting effect is good, and the reliability is high.

The driving source 2 can also be arranged between the power rod 3 and the driven rod 8, and output shafts are respectively arranged on two sides of the driving source 2, wherein one output shaft is in transmission connection with the power rod 3 through a first screw pair 6, and the other output shaft is in connection with the driven rod 8 through a second screw pair 7. There is no transmission relation between the second screw pair 7 and the lower hinge mount 4 corresponding to the driven rod 8.

Alternatively, the power rod 3 and the driven rod 8 are cross-hinged to form an X-shaped structure. The power rod 3 is driven by the driving source 2, and the power rod 3 is restricted by the driven rod 8. Specifically, the middle parts of the power rod 3 and the driven rod 8 are coaxially provided with rotating shafts in a penetrating manner, and both the power rod 3 and the driven rod 8 can rotate relative to the rotating shafts.

Further, as shown in fig. 6 to 7, the driving source 2 is disposed outside the power rod 3 or outside the driven rod 8, the driving source 2 is connected to a screw pair 9 through an output shaft, the screw pair 9 is connected to the power rod 3 in a driving manner, and the lower end of the power rod 3 is moved in the horizontal direction by the driving action of the screw pair 9. Specifically, there are mainly the following two ways:

first, when the driving source 2 is located outside the power rod 3, the lower end of the power rod 3 moves away from the driving source 2 while the load 100 is in the lifting process, and the distance from the lower end of the driven rod 8 to the driving source 2 in the horizontal direction is constant.

Secondly, when the driving source 2 is located outside the driven rod 8 (i.e., fig. 7), the lower end of the power rod 3 moves closer to the driving source 2 when the load 100 is in the lifting process, and the distance between the lower end of the driven rod 8 and the driving source 2 in the horizontal direction is not changed.

Adopt this kind of mode of second, when being in the rising in-process, power rod 3 moves to the direction that is close to driving source 2, and power rod 3 is close to the support end that is used for the drive promptly, and support rigidity is higher to guarantee to bear the weight of patient's well, patient experience feels good.

Specifically, the lower end of the driven rod 8 is hinged with the lower hinge base 4, and the lower end of the power rod 3 is hinged with the lower hinge base 4, so that both the power rod 3 and the driven rod 8 can rotate relative to the base 1. The screw pair 9 is in transmission connection with the lower hinge base 4 connected with the power rod 3, the driving source 2 drives the screw of the screw pair 9 to rotate through the output shaft, and the screw nut is sleeved on the screw and connected to the lower hinge base 4 corresponding to the power rod 3.

Optionally, the lead screw may also be provided with two lead screw nuts, one of the lead screw nuts is connected to the lower hinge base 4 corresponding to the power rod 3, so that the lower hinge base 4 can slide relative to the base 1, the other lead screw nut is connected to the lower hinge base 4 corresponding to the driven rod 8, and the lower hinge base 4 is fixed to the base 1. Preferably, the drive source 2 is arranged on the lower hinge mount 4 corresponding to the driven rod 8, so that the lower hinge mount 4 simultaneously takes into account the function of the mounting of the drive source 2.

Further, the bottom of the lower hinge seat 4 corresponding to the power rod 3 is provided with a sliding block 41, the base 1 is provided with a sliding rail 11 along the horizontal direction, and the sliding block 41 is in sliding fit with the sliding rail 11, so that the guiding effect is achieved, and the stability of the lower end of the power rod 3 in the horizontal movement process is ensured. The lower hinge base 4 corresponding to the driven rod 8 may be directly fixed to the base 1, or a slider 41 may be provided at the bottom, and the slider 41 may be fixed to the slide rail 11 by a locking member. The lower hinge seat 4 corresponding to the driven rod 8 and the lower hinge seat 4 corresponding to the driven rod 8 have the same structure, the lower hinge seats 4 can be manufactured in the same batch, independent production is not needed, and production cost is saved.

It can be understood that the upper ends of the power rods 3 and the upper ends of the driven rods 8 are the same as the upper ends of the two power rods 3 and the load 100 in the third embodiment, the upper end of the power rod 3 in this embodiment corresponds to the upper end of one power rod 3 in the third embodiment, and the upper end of the driven rod 8 corresponds to the upper end of another power rod 3 in the third embodiment, and therefore, detailed description is omitted.

EXAMPLE five

The present embodiment differs from the fourth embodiment only in the position where the drive source 2 is disposed, in which the drive source 2 is disposed outside the power rod 3 or outside the driven rod 8, and in which the drive source 2 is disposed between the power rod 3 and the driven rod 8.

Further, the output shaft of the driving source 2 is in transmission connection with the lower end of the power rod 3 through a screw pair 9, specifically, the screw pair 9 penetrates through a screw nut, the screw nut is connected to a lower hinge base 4, the lower hinge base 4 is rotatably connected to the lower end of the power rod 3, and the screw nut moves along a screw while rotating along with the screw and drives the lower end of the power rod 3 to move through the lower hinge base 4. The lower hinge seat 4 corresponding to the driven rod 8 can be fixedly arranged on the base 1, the lower hinge seat 4 corresponding to the driven rod 8 is not in contact with the lead screw, the lead screws can be arranged on two sides of the driving source 2, the lower hinge seat 4 corresponding to the driven rod 8 is not in transmission relation with the lead screw corresponding to the lower hinge seat, and the lead screw penetrates through the lower hinge seat 4 and only plays a role in supporting.

It can be understood that the structure and principle of the lower hinge base 4 corresponding to the lower end of the power rod 3 and the lower hinge base 4 corresponding to the lower end of the driven rod 8 are the same as those of the embodiment, and thus detailed description is omitted.

It can be understood that the upper ends of the power rods 3 and the upper ends of the driven rods 8 are the same as the upper ends of the two power rods 3 and the load 100 in the third embodiment, the upper end of the power rod 3 in this embodiment corresponds to the upper end of one power rod 3 in the third embodiment, and the upper end of the driven rod 8 corresponds to the upper end of another power rod 3 in the third embodiment, and therefore, detailed description is omitted.

EXAMPLE six

The embodiment provides a treatment bed, including foretell elevating system, elevating system realizes the lift of load 100 for satisfy the different demands of patient in treatment process, improve user experience and feel.

Further, a guide rail 101 is provided at the bottom of the load 100 along the horizontal direction, if the upper hinge base 5 needs to be in a sliding state, the slide block 51 provided at the top of the upper hinge base 5 is in sliding fit with the guide rail 101, and anti-dropping stoppers are provided at both ends of the guide rail 101, and are used for limiting the upper hinge base 5, so as to prevent the upper hinge base 5 from easily sliding out of the guide rail 101 when in the sliding state. Preferably, the position of the anti-falling limiting part is adjustable, and the adjustment of the sliding stroke of the upper hinge seat 5 is realized by adjusting the position of the anti-falling limiting part, so that the lifting height of the lifting mechanism is adjusted, the operation is convenient, and the use is flexible.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (13)

1. A lifting mechanism for driving a load (100) to lift comprises a base (1), and is characterized by further comprising a driving source (2) and a power rod (3), wherein the lower end of the power rod (3) is rotatably connected with the base (1), the upper end of the power rod (3) is rotatably connected with the load (100), an output shaft is in transmission connection with an output end of the driving source (2), and the driving source (2) can drive the lower end of the power rod (3) to reciprocate in the horizontal direction through the output shaft, so that the load (100) can lift relative to the base (1).

2. The lifting mechanism according to claim 1, characterized in that the number of power rods (3) is two.

3. The lifting mechanism according to claim 2, characterized in that the two power rods (3) are cross-hinged to form an X-shaped structure.

4. The lifting mechanism according to claim 3, characterized in that a first screw pair (6) and a second screw pair (7) are connected to the driving source (2) in a transmission manner, the driving source (2) is connected to one of the power rods (3) in a transmission manner through the first screw pair (6), the driving source (2) is connected to the other power rod (3) in a transmission manner through the second screw pair (7), and the rotation directions of the first screw pair (6) and the second screw pair (7) are opposite.

5. The lifting mechanism according to claim 4, characterized in that the lower end of the power rod (3) is in transmission connection with the corresponding screw pair (9) through a lower hinge base (4), the upper end of the power rod (3) is rotatably connected to the load (100) through an upper hinge base (5), and at least one of the upper hinge bases (5) is slidably arranged on the load (100).

6. The lifting mechanism according to claim 1, further comprising a driven rod (8), wherein the power rod (3) drives the driven rod (8) to move when driving the load (100) to lift.

7. A lifting mechanism according to claim 6, wherein the powered rod (3) and the driven rod (8) are cross-hinged to form an X-shaped structure.

8. The lifting mechanism according to claim 7, wherein the drive source (2) is in transmission connection with a lead screw pair (9) through the output shaft, and the lead screw pair (9) is in transmission connection with the power rod (3).

9. The lifting mechanism according to claim 8, characterized in that two lower hinge bases (4) are respectively hinged to the lower end of the driven rod (8) and the lower end of the power rod (3) in a one-to-one correspondence manner, two upper hinge bases (5) are respectively hinged to the upper end of the driven rod (8) and the upper end of the power rod (3) in a one-to-one correspondence manner, the screw pair (9) is in transmission connection with the lower hinge base (4) to which the power rod (3) is connected, the upper end of the power rod (3) is rotatably connected to the load (100) through an upper hinge base (5), the upper end of the driven rod (8) is rotatably connected to the load (100) through an upper hinge base (5), and at least one of the upper hinge bases (5) is slidably arranged on the load (100).

10. A therapeutic bed comprising the elevating mechanism of any one of claims 1 to 9.

11. A therapeutic bed according to claim 10, characterized in that the bottom of the load (100) is provided with a guide rail (101) in a horizontal direction.

12. The therapeutic bed according to claim 11, characterized in that anti-dropping stoppers are provided at both ends of the guide rail (101).

13. The therapeutic bed of claim 12 wherein said anti-slip stop is adjustable in position.

Images