CN215131958U

CN215131958U - Convenient multi-functional medical care bed who adjusts

Info

Publication number: CN215131958U
Application number: CN202120456195.6U
Authority: CN
Inventors: 任凭; 罗玉寅; 刘梦如; 张雨茜
Original assignee: Huzhou University
Current assignee: Huzhou University
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-12-14
Anticipated expiration: 2031-03-03

Abstract

The utility model discloses a convenient multi-functional medical care bed who adjusts belongs to medical device technical field. The utility model provides a convenient multi-functional medical care bed of adjusting, includes nursing bed board fixed plate, the both ends outside all is the rectangle structure and has set firmly the supporting seat about the fixed plate, the inside cavity A of having seted up of supporting seat, the inside anti-falling subassembly that is equipped with of cavity A, the fixed plate outside is equipped with the guardrail, nursing bed board bottom has set firmly the support frame, support frame bottom surface four corners all is equipped with the brake wheel, the support frame is equipped with nursing bed board adjusting part. The utility model discloses set up the nursing bed board into four concatenation bed boards and rotate to connect and constitute to can form the nursing bed board of having a rest originally like the general structure of deck chair through the regulation of servo motor and cylinder, guarantee the stability when adjusting and avoid weighing down smooth phenomenon, the slope of left side second piece concatenation bed board is realized to cylinder control slope branch, utilizes the cylinder to increase the efficiency and the stability of adjusting.

Description

Convenient multi-functional medical care bed who adjusts

Technical Field

The utility model relates to the technical field of medical devices, especially, relate to a convenient multi-functional medical care bed who adjusts.

Background

The medical care bed generally comprises a bed frame, a turnover mechanism, a sitting-up mechanism, a sitting-down mechanism and a supporting leg device, and has stronger functionality compared with a common bed so as to facilitate the functions of assisting a patient in getting up, lying, turning over and the like.

The mode that the strut isotructure of standing up of current medical care bed generally is manual regulation or automatic regulation, wherein automatic regulation structure, can use the cylinder to do the group power of regulation, this kind of structure is efficient adjustment convenience, but there is the atress when strutting the use and weigh down smooth risk, both sides all can be provided with the guardrail on the medical care bed in addition, and most guardrail all can realize accomodating the regulation, and these structures adjust by oneself to the bed patient, especially one-hand control is very inconvenient, therefore current medical care bed is abundant in function, still exist the place that needs the improvement during the time, and then realize the convenience and the rationality of regulation, consequently it just seems very necessary to design a convenient multi-functional medical care bed who adjusts.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a convenient multifunctional medical nursing bed of adjusting in order to solve the problem that the guardrail patient who has the risk of falling down smoothly and medical nursing bed both sides adjusts inconveniently when the mechanism atress is sat to play of current cylinder regulation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a conveniently adjusted multifunctional medical care bed, which comprises a care bed board and fixing plates fixed at the front two ends of the right side of the care bed board, the nursing bed board is formed by rotationally connecting four spliced bed boards, a convenient groove is arranged in the middle of the nursing bed board, the convenient groove is provided with a sealing plate convenient to disassemble, the left end and the right end of the nursing bed board are both fixedly provided with a headboard, the top of the headboard on the right side is fixedly provided with a hand push handrail, the outer sides of the left end and the right end of the fixed plate are both in a rectangular structure, a supporting seat is fixedly arranged, a cavity A is arranged in the supporting seat, the cavity A is internally provided with an anti-falling assembly, the outer side of the fixed plate is provided with a guardrail, the bottoms of the left side and the right side of the guardrail pass through the supporting seat and extend to the lower part of the supporting seat, the nursing bed board bottom sets firmly the support frame, the support frame bottom surface four corners all is equipped with the brake wheel, be equipped with nursing bed board adjusting part on the support frame.

Preferably, be located between the fixed plate nursing bed board rather than sliding connection, the concatenation bed board of nursing bed board rotates the connecting rod of junction and extends to inside and rather than the rotation connection of fixed plate.

Preferably, prevent weighing down the subassembly and include bracing piece A, bracing piece A sets firmly on cavity A inner wall, it prevents weighing down the board to rotate to be connected with through the dwang on the outer terminal surface of bracing piece A, prevent weighing down the board and be anomalous L type structure setting, prevent weighing down the L type structure that one side that the board outer end opened into the guardrail was and seted up the spacing groove, the spacing inslot portion is and is equipped with the gag lever post to the L type structure of leaned towards the outside.

Preferably, bracing piece A and the dwang of preventing being connected between the board of weighing down pass the gag lever post and rather than rotate and be connected, bracing piece A and the dwang of preventing being connected between the board of weighing down be connected with the reset coil spring respectively in with prevent weighing down board and gag lever post, prevent weighing down board top front side and set firmly the baffle, the guardrail passes inside being equipped with of supporting seat and is vertical equidistant a plurality of protruding poles that have set firmly, guardrail and protruding pole pass the supporting seat and rather than sliding connection.

Preferably, nursing bed board adjusting part includes the cylinder, the cylinder right-hand member has set firmly the connecting rod, the connecting rod passes through the support and slides and set up on the support frame, the connecting rod left end rotates and is connected with slope branch, the connecting rod top is rotated and is connected in left side second piece concatenation bed board left side bottom surface.

Preferably, the nursing bed board adjusting component also comprises a servo motor, the left end and the right end of the front side of the servo motor are fixedly provided with a support rod B, the top of the supporting rod B is provided with a sliding rod which extends downwards to the inside of the supporting rod B and is connected with the supporting rod B in a sliding way, the threaded rod is arranged in the bottom end of the sliding rod, a cavity B is arranged in the supporting rod B close to the bottom end, the non-thread part at the bottom end of the threaded rod extends into the cavity B and is rotationally connected with the cavity B, the bevel gear A is sleeved outside the bottom end of the threaded rod, one cavity B is longitudinally and rotatably connected with a rotating shaft, the other end of the rotating shaft extends into the other cavity B and is rotatably connected with the other cavity B, the rotating shaft is sleeved with a bevel gear B vertically meshed with the bevel gear A relative to the cavity B, and the middle of the rotating shaft is vertically meshed with the servo motor through two bevel gears C.

Compared with the prior art, the utility model provides a convenient multi-functional medical care bed who adjusts possesses following beneficial effect:

(1) the utility model provides a multifunctional medical nursing bed convenient for adjustment, which is formed by arranging four spliced bed boards to be rotationally connected, arranging the right end of the nursing bed board as a bed head, arranging the left end as a bed position, driving the spliced bed board at the right end by a servo motor to realize the lifting of a slide bar, controlling the adjustment of the nursing bed board to realize the sitting up of a patient, wherein the lifting of the slide bar is realized by utilizing the threaded connection of a threaded rod and the slide bar, ensuring the stable automatic locking during adjustment to avoid the slide bar phenomenon, controlling the inclined support bar to realize the inclination of the second spliced bed board at the left side by the spliced bed board at the other end through a cylinder, increasing the adjustment efficiency and stability by utilizing the cylinder, and the spliced bed board is used for the cylinder slide bar phenomenon after the leg support of the patient is small so as to avoid the over-pressure, and arranging guardrails at the front side and the back side of the nursing bed board, wherein both ends pass the supporting seat about the guardrail and with prevent weighing down the subassembly cooperation when steadily putting down the guardrail, the guardrail with prevent weighing down the subassembly steady contact, can guarantee accomodating of guardrail, and when providing the translation rate of guardrail, prevent weighing down the board and can block the nose bar on the guardrail and realize the fixed of guardrail, this structure has improved the convenience that the guardrail receive and releases, even the patient is independent and the singlehanded also convenient operation, has increased the practicality that medical care bed adjusted.

(2) The anti-falling component in the utility model is arranged in the cavity A inside the supporting seat, when the guardrail passes through the supporting seat, the anti-falling component can be contacted, specifically, when the guardrail is lifted up, the convex rod is contacted with the limiting rod, the limiting rod is extruded to be retracted inwards, meanwhile, the external force for rotating the anti-falling plate can be given, but the anti-falling plate is stabilized because the baffle is arranged outside the anti-falling plate, the limiting rod is reset by the coil spring, when the guardrail is stably lowered, the limiting rod is extruded in the direction, when the limiting rod is unfolded outwards, the anti-falling plate can be driven to swing outwards, but because the guardrail moves slowly and stably, the anti-falling plate can be rapidly driven to recover when the limiting rod is separated from one convex rod, if the guardrail moves rapidly, the limiting rod and the anti-falling plate are not timely reset, the anti-falling plate can transversely block the next convex rod, the fixation of the guardrail is realized, and the anti-falling plate can be readjusted only when the guardrail is lifted up lightly to reset, the utility model provides an improve the device, can realize the one-hand operation lift adjustment of guardrail, realized convenient and high-efficient.

(3) The utility model relates to the adjustment of a nursing bed board, so the nursing bed board is divided into four splicing bed board areas which can be rotatably adjusted, wherein the first splicing bed board at the right end mainly realizes the inclined lifting and can be used for a user to lean and lie after sitting up, in particular to the utility model utilizes the drive of a servo motor, the rotation of a rotating shaft is realized through the vertical meshing of two bevel gears C, the front side and the rear side of the rotating shaft are also sleeved with bevel gears B, the bevel gears A and the bevel gears B are vertically meshed, so that the threaded rod starts to rotate and is in threaded connection with the sliding rod, the lifting of the sliding rod is realized, and then the splicing bed board at the right end is controlled, in addition, the left side of the servo motor is also provided with a cylinder, the air rod of the cylinder faces towards the left end and is fixedly connected with a connecting rod, the connecting rod can also realize the left-right movement in the retracting process of the air rod, the right end of the connecting rod is rotatably connected with an inclined support rod, when the air rod moves rightwards, the bottom of the inclined supporting rod moves rightwards, the whole inclination angle changes, the inclination of the second spliced bed board on the left side is realized, the nursing bed board which has a rest originally can be formed into a structure which is common for the reclining chair through the adjustment of the servo motor and the air cylinder, the stability of the adjustment of the sliding rod with larger stress can be increased and decreased through the lifting control of the threaded connection, and the phenomenon of falling and slipping is avoided.

Drawings

FIG. 1 is a schematic view of the overall front view structure of the present invention;

fig. 2 is a schematic view of the overall left side top view structure of the present invention;

fig. 3 is a schematic diagram of the overall split left-side top view structure of the present invention;

FIG. 4 is a schematic view of the cross section of the outer end of one of the supporting bases and the structure of the related components of the present invention;

FIG. 5 is a schematic structural view of the fall preventing assembly of the present invention;

FIG. 6 is a schematic view of the structure of the nursing bed board adjusting assembly of the present invention;

fig. 7 is a schematic view of the structure of one of the supporting rods, the left section of the sliding rod and the related assembly and disassembly structure of the present invention.

Description of the figure numbers: 1. nursing bed boards; 2. a fixing plate; 3. a convenient groove; 301. a sealing plate; 4. a headboard; 5. pushing the handrail; 6. a supporting seat; 7. a cavity A; 8. a fall arrest assembly; 801. a support rod A; 802. an anti-falling plate; 803. a limiting groove; 804. a limiting rod; 805. a baffle plate; 9. a guardrail; 901. a nose bar; 10. a support frame; 11. a brake wheel; 12. a nursing bed board adjusting component; 1201. a cylinder; 1202. a connecting rod; 1203. tilting the strut; 1204. a servo motor; 1205. a support bar B; 1206. a slide bar; 1207. a threaded rod; 1208. a cavity B; 1209. a bevel gear A; 1210. a rotating shaft; 1211. and a bevel gear B.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1:

please refer to fig. 1-3, a multifunctional medical nursing bed convenient for adjustment, comprising a nursing bed board 1 and fixing boards 2 fixed at the front two ends of the right side of the nursing bed board 1, wherein the nursing bed board 1 is formed by rotating and connecting four spliced bed boards, a convenient groove 3 is formed in the middle of the nursing bed board 1, a sealing board 301 convenient for disassembly is arranged on the convenient groove 3, headboards 4 are fixedly arranged at the left and right ends of the nursing bed board 1, handrails 5 are fixedly arranged at the top of the headboards 4 on the right side, supporting seats 6 are fixedly arranged at the outer sides of the left and right ends of the fixing board 2 in a rectangular structure, a cavity a7 is formed in the supporting seats 6, an anti-falling assembly 8 is arranged in the cavity a7, a guardrail 9 is arranged at the outer side of the fixing board 2, the bottoms of the left and right sides of the guardrail 9 penetrate through the supporting seats 6 and extend to the lower side of the supporting seats, a supporting frame 10 is fixedly arranged at the bottom of the nursing bed board 1, brake wheels 11 are arranged at four corners of the bottom of the supporting frame 10, and a nursing bed board adjusting assembly 12 is arranged on the supporting frame 10.

Nursing bed board 1 that is located between fixed plate 2 rather than sliding connection, the connecting rod of nursing bed board 1's concatenation bed board rotation junction extends to inside and rather than the rotation connection of fixed plate 2.

The utility model provides a multifunctional medical nursing bed convenient for adjustment, a nursing bed board 1 is set to be composed of four spliced bed boards in a rotating and exercising way, the right end of the nursing bed board 1 is set to be a bed head, the left end is set to be a bed position, the spliced bed board at the right end is driven by a servo motor 1204 to realize the lifting of a slide bar 1206, the adjustment of the nursing bed board 1 is controlled to realize the sitting of a patient, wherein the lifting of the slide bar 1206 is realized by utilizing the threaded rod 1207 to be connected with the thread of the slide bar 1206, the stability during adjustment can be ensured and the slide bar phenomenon can be avoided, the spliced bed board at the other end realizes the inclination of the second spliced bed board at the left side by controlling an inclined support rod 1203 by a cylinder 1201, the efficiency and the stability of adjustment are increased by utilizing the cylinder 1201, the spliced bed board is used for supporting the legs of the patient with small stress to avoid the falling and sliding phenomenon of the cylinder 1201 after the over-pressure, in addition, guardrails 9 are arranged at the front side and the back side of the nursing bed board 1, wherein both ends pass supporting seat 6 about guardrail 9 and with prevent weighing down subassembly 8 cooperation when steadily putting down guardrail 9, guardrail 9 with prevent weighing down subassembly 8 stationary contact, can guarantee accomodating of guardrail 9, and when providing the translation rate of guardrail 9, prevent weighing down board 802 and can block nose bar 901 on guardrail 9 and realize the fixed of guardrail 9, this structure has improved the convenience that guardrail 9 received and released, even the patient is independent and the one-hand also convenient operation, provide the convenience that medical care bed adjusted.

In addition the utility model discloses in mention servo motor 1204 and cylinder 1201 all connect through power cord external control power, do not do too much and describe repeatedly.

Example 2:

referring to FIGS. 4-5, the embodiment 1 is different from the above embodiments; prevent weighing down subassembly 8 includes bracing piece A801, and bracing piece A801 sets firmly on cavity A7 inner wall, rotates through the dwang on the outer terminal surface of bracing piece A801 to be connected with and prevents weighing down board 802, prevents weighing down board 802 and is anomalous L type structure setting, prevents weighing down the L type structure that board 802 outer end opened into one side of guardrail 9 and is offered spacing groove 803, and spacing groove 803 inside is to be equipped with the L type structure of outside slope and is provided with gag lever post 804.

The dwang of being connected between bracing piece A801 and the anti-falling plate 802 passes gag lever post 804 and is connected rather than rotating, the dwang of being connected between bracing piece A801 and the anti-falling plate 802 respectively in with prevent that falling plate 802 and gag lever post 804 are connected with the reset coil spring, prevent that the front side in the top of falling plate 802 has set firmly baffle 805, guardrail 9 passes inside being equipped with of supporting seat 6 and is vertical equidistant a plurality of protruding poles 901 that have set firmly, guardrail 9 and protruding pole 901 pass supporting seat 6 and rather than sliding connection.

The anti-falling component 8 in the utility model is arranged in a cavity A7 inside a supporting seat 6, when a guardrail 9 passes through the supporting seat 6, the guardrail can contact with the anti-falling component 8, specifically, when the guardrail 9 is lifted up, a convex rod 901 contacts with a limiting rod 804 to extrude the limiting rod 804 to be retracted inwards, the external force for rotating the anti-falling plate 802 can be given, but the anti-falling plate 802 is stabilized due to a baffle 805 arranged outside the anti-falling plate 802, the spring limiting rod 804 is reused for resetting, when the guardrail 9 is stably downwards, the limiting rod 804 is extruded in the direction, when the limiting rod 804 is unfolded outwards, the anti-falling plate 802 is driven to swing outwards, but because the guardrail 9 moves slowly and stably, when the limiting rod 804 is separated from a convex rod 901, the anti-falling plate 802 can be rapidly driven to recover, but if the guardrail 9 moves rapidly, the limiting rod 804 and the anti-falling plate 802 are not reset timely, the anti-falling plate 802 can transversely block the next convex rod 901, realize guardrail 9 fixed, only lightly carry guardrail 9 and make prevent weighing down board 802 after reseing alright with readjustment, the utility model provides a repacking device can realize guardrail 9's one-hand operation lift adjustment, has realized convenient and high-efficient.

Example 3:

referring to FIGS. 6-7, the embodiment 1-2 is different therefrom; nursing bed board adjusting part 12 includes cylinder 1201, and cylinder 1201 right-hand member has set firmly connecting rod 1202, and connecting rod 1202 slides through the support and sets up on support frame 10, and the connecting rod 1202 left end rotates and is connected with slope branch 1203, and the connecting rod 1202 top is rotated and is connected in the second concatenation bed board left side bottom surface of left side.

Nursing bed board adjusting part 12 still includes servo motor 1204, both ends all set firmly bracing piece B1205 about servo motor 1204 front side, bracing piece B1205 top is equipped with the slide bar 1206, slide bar 1206 downwardly extending to inside and rather than sliding connection of bracing piece B1205, the inside screw thread of slide bar 1206 bottom is trained to be graded threaded rod 1207, cavity B1208 has been seted up to bracing piece B1205 near the inside of bottom position, threaded rod 1207 bottom unthreaded position extends to inside and rather than rotating connection of cavity B1208, bevel gear A1209 has been cup jointed to threaded rod 1207 bottom outside, the inside longitudinal rotation of one of them cavity B1208 is connected with pivot 1210, the pivot 1210 other end extends to inside and rather than rotating connection of another cavity B1208, pivot 1210 all cup joints the bevel gear B1211 with the perpendicular meshing of bevel gear A1209 for cavity B1208 position, the pivot 1210 middle part is through two bevel gear C and the perpendicular meshing of servo motor 1204.

The utility model relates to the adjustment of a nursing bed board 1, so that the nursing bed board 1 is divided into four rotatably adjustable spliced bed board areas, wherein the first spliced bed board at the right end mainly realizes inclined lifting for the user to lean and lie after sitting up, specifically, the servo motor 1204 is used for driving, the rotation of a rotating shaft 1210 is realized through the vertical meshing of two bevel gears C, the front side and the rear side of the rotating shaft 1210 are sleeved with a bevel gear B1208, the bevel gear A1209 is vertically meshed with the bevel gear B1208, so that a threaded rod 1207 starts to rotate, the threaded rod 1207 is in threaded connection with a sliding rod 1206, the lifting of the sliding rod 1206 is realized to further control the spliced bed board at the right end, in addition, the left side of the servo motor 1204 is also provided with a cylinder 1201, the air rod of the cylinder 1201 faces towards the left end and is fixedly connected with a connecting rod 1202, the connecting rod 1202 can also realize the left-right movement in the process of retracting the air rod, the connecting rod 1202 is rotatably connected with an inclined support rod 1203, when it moved to the right, the bottom of slope branch 1203 moved to the right, and whole inclination changes, realizes the slope of the second concatenation bed board in left side, consequently can form the general structure of deck chair into with the nursing bed board 1 of originally having a rest through servo motor 1204 and cylinder 1201's regulation to the great slide bar 1206 of atress passes through threaded connection control lift can increase and decrease regulation stability, avoids weighing down smooth phenomenon.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a convenient multi-functional medical care bed of adjusting, includes nursing bed board (1) and is fixed in fixed plate (2) at both ends before its right side, its characterized in that: the nursing bed board (1) is formed by connecting four spliced bed boards in a rotating way, a convenience groove (3) is formed in the middle of the nursing bed board (1), a sealing plate (301) convenient to detach is arranged on the convenience groove (3), head boards (4) are fixedly arranged at the left end and the right end of the nursing bed board (1), a hand push handrail (5) is fixedly arranged at the top of the head board (4) on the right side, a supporting seat (6) is fixedly arranged at the outer sides of the left end and the right end of a fixed plate (2) in a rectangular structure, a cavity A (7) is formed in the supporting seat (6), an anti-falling assembly (8) is arranged in the cavity A (7), a guardrail (9) is arranged at the outer side of the fixed plate (2), the bottoms of the left side and the right side of the guardrail (9) penetrate through the supporting seat (6) and extend to the lower side of the supporting seat, a supporting frame (10) is fixedly arranged at the bottom of the nursing bed board (1), four corners of the bottom of the supporting frame (10) are respectively provided with wheels (11), a nursing bed board adjusting component (12) is arranged on the supporting frame (10).

2. The multifunctional medical care bed convenient to adjust as claimed in claim 1, wherein: be located between fixed plate (2) nursing bed board (1) and its sliding connection, the concatenation bed board of nursing bed board (1) rotates the dwang of junction and extends to fixed plate (2) inside and rotate rather than being connected.

3. The multifunctional medical care bed convenient to adjust as claimed in claim 1, wherein: prevent weighing down subassembly (8) including bracing piece A (801), bracing piece A (801) sets firmly on cavity A (7) inner wall, rotate through the dwang on the outer terminal surface of bracing piece A (801) and be connected with and prevent weighing down board (802), prevent weighing down board (802) and be L type structure setting, prevent weighing down the L type structure that one side that board (802) outer end was opened into guardrail (9) and seted up spacing groove (803), spacing groove (803) inside is and is equipped with L type structure to outside slope and is provided with gag lever post (804).

4. The multifunctional medical care bed convenient to adjust of claim 3, wherein: bracing piece A (801) and the dwang of preventing being connected between the board (802) pass gag lever post (804) and rotate rather than being connected, bracing piece A (801) and the dwang of preventing being connected between the board (802) are connected with the reset coil spring respectively in with preventing weighing down board (802) and gag lever post (804), it has set firmly baffle (805) to prevent weighing down board (802) top front side, guardrail (9) pass supporting seat (6) inside be equipped with be vertical equidistant a plurality of protruding poles (901) have set firmly, guardrail (9) and protruding pole (901) pass supporting seat (6) and rather than sliding connection.

5. The multifunctional medical care bed convenient to adjust as claimed in claim 1, wherein: nursing bed board adjusting part (12) include cylinder (1201), cylinder (1201) right-hand member has set firmly connecting rod (1202), connecting rod (1202) slide through the support and set up on support frame (10), connecting rod (1202) left end rotates and is connected with slope branch (1203), connecting rod (1202) top rotates to be connected in left side second piece concatenation bed board left side bottom surface.

6. The multifunctional medical care bed convenient to adjust of claim 5, wherein: the nursing bed board adjusting assembly (12) further comprises a servo motor (1204), support rods B (1205) are fixedly arranged at the left end and the right end of the front side of the servo motor (1204), a slide rod (1206) is arranged at the top of each support rod B (1205), the slide rod (1206) extends downwards into each support rod B (1205) and is in sliding connection with the support rod B, a threaded rod (1207) is arranged at the inner part of the bottom end of the slide rod (1206) in a threaded training mode, a cavity B (1208) is formed in the support rod B (1205) close to the bottom end of the support rod B, the unthreaded part at the bottom end of the threaded rod (1207) extends into the cavity B (1208) and is in rotating connection with the threaded rod, a bevel gear A (1209) is sleeved on the outer part of the bottom end of the threaded rod (1207), one of the cavities B (1208) is longitudinally and rotatably connected with the rotating shaft (1210) in a rotating mode, the other end of the rotating shaft (1210) extends into the other cavity B (1208) and is rotatably connected with the cavity B (1208), the rotating shaft (1210) is sleeved with a bevel gear B (1211) vertically meshed with the bevel gear A (1209) relative to the cavity B (1208), and the middle of the rotating shaft (1210) is vertically meshed with the servo motor (1204) through two bevel gears C.