Tourniquet winding device for operating room nursing

Abstract

The invention belongs to the field of operating room tourniquet winding, and particularly discloses an operating room nursing tourniquet winding device which comprises a bottom frame, a bearing part, a tourniquet winding device body and an auxiliary knotting device. According to the condition that the sizes of limbs of different patients are different and the sizes of different positions of the same limb are different, the technical effect of self-adaptive fitting and winding of the limbs of the patients is achieved by adopting a mode of combining clamping movement and elastic buffering; by arranging the auxiliary knotting device, the wound tourniquet can be knotted in an attached mode, and the tourniquet is effectively prevented from loosening during knotting.

Description

Technical Field

[0001] The invention belongs to the technical field of tourniquet winding in an operating room, and in particular relates to a tourniquet winding device for operating room nursing. Background Art

[0002] In traditional operating room care, the wrapping of tourniquets mostly relies on manual operation by medical staff. When medical staff wrap the tourniquet manually, it is difficult to accurately control the tension of the wrapping. Different medical staff have different operating techniques and strengths, which may cause the tourniquet to be wrapped too tightly or too loosely. If it is wrapped too tightly, it will cause excessive compression on the patient's limbs, such as blood vessels, nerves, and muscles, causing complications such as tissue ischemia and nerve damage; if it is wrapped too loosely, it will not achieve effective hemostasis, affecting the clarity of the surgical field of view and increasing surgical risks.

[0003] When manually wrapped, the tourniquet's wrapping speed is also unstable. In emergency surgery, the tourniquet needs to be applied quickly and effectively, but the speed of manual wrapping is limited, which may delay the operation time, and the wrapping size of different patients is also different. The existing wrapping device cannot perform adaptive fitting wrapping, and cannot assist in knotting after wrapping, which is easy to cause loosening. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a tourniquet winding device for operating room nursing. According to the different limb sizes of different patients and the inconsistent sizes of different positions of the same limb, a combination of snap-on movement and elastic buffering is adopted to achieve the technical effect of adaptively fitting and winding around the patient's limbs. The setting of the auxiliary knotting device can perform a fitting knotting operation on the tourniquet after winding, effectively preventing the tourniquet from loosening when knotting.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a tourniquet winding device for operating room nursing, comprising a bottom frame, a supporting member, a tourniquet winding device and an auxiliary knotting device, wherein the supporting member is arranged in the bottom frame, the tourniquet winding device is arranged in the bottom frame, the tourniquet winding device is arranged between the supporting members, and the auxiliary knotting device is arranged on the tourniquet winding device; the auxiliary knotting device comprises a barrier tube, a tourniquet hook assembly and an elastic rope, the barrier tube is buckled on the tourniquet winding device, the tourniquet hook assembly is arranged in the barrier tube, one end of the elastic rope is arranged on the tourniquet winding device, and the other end of the elastic rope is connected to the barrier tube.

[0006] Furthermore, the baffle cylinder includes a cylinder body, a connecting rod and a connecting plate, the connecting rod is arranged on the bottom wall of the cylinder body, and the connecting plate is arranged on the connecting rod.

[0007] Preferably, the tourniquet hook and pull assembly includes a hook and pull rod, a limiting slide, a return spring and a handle, the limiting slide is slidably engaged on the connecting rod, the hook and pull rod is arranged on the limiting slide, the hook and pull rod is arranged in the cylinder, the return spring is arranged between the limiting slide and the connecting disk, and the handle is arranged on the side wall of the limiting slide.

[0008] Furthermore, the tourniquet winding device includes a moving frame, an engaging rolling supporting assembly, a winding disk, a winding driving member, an adaptive fitting winding member and a moving assembly, wherein the moving frame is engaged and slidably arranged in the bottom frame, the engaging rolling supporting assembly is arranged on the moving frame, the winding disk is engaged and rotatably arranged on the engaging rolling supporting assembly, the winding driving member is arranged on the engaging rolling supporting assembly, the winding driving member is meshed and connected with the winding disk, the adaptive fitting winding member is arranged on the winding disk, the moving assembly is arranged in the bottom frame, and the moving frame is connected to the moving assembly.

[0009] Among them, the adaptive fitting winding part includes a fitting moving block, an adaptive spring, a connecting column and a tourniquet fixed mounting part. The winding disk is provided with a fitting moving groove, the fitting moving block is snap-fitted and slidably arranged in the fitting moving groove, the adaptive spring is arranged between the fitting moving block and the fitting moving groove, the connecting column is arranged on the side wall of the fitting moving block, and the tourniquet fixed mounting part is arranged on the connecting column.

[0010] Furthermore, the tourniquet fixing mounting component includes a fixing plate, a sleeve mounting tube and an embedded screw-in sealing component, the fixing plate is arranged on the connecting column, the sleeve mounting tube is arranged on the fixing plate, and the embedded screw-in sealing component is disassembled and arranged in the sleeve mounting tube; the embedded screw-in sealing component includes a sealing plate, an embedded column and a limiting convex edge, the sleeve mounting tube opening is provided with a notch, the embedded column is arranged on the sealing plate, the limiting convex edge is arranged on the outer circumferential wall of the embedded column, the limiting convex edge is engaged and slid along the notch, and the embedded column is engaged and slidably arranged in the sleeve mounting tube, when the embedded column is engaged in the notch through the limiting convex edge, the sealing plate is screwed so that the limiting convex edge and the notch are misaligned, so that the embedded screw-in sealing plate can be fixed, and then the tourniquet installed on the sleeve mounting tube can be fixed.

[0011] Furthermore, the engaging rolling supporting assembly includes a supporting rod and a supporting roller, the supporting rod is arranged on the movable frame, the supporting roller is rotatably arranged on the supporting rod, the winding disk is provided with a supporting groove, and the winding disk is rotatably arranged on the supporting roller through the supporting groove.

[0012] Wherein, the winding driving component includes a driving wheel, a follower wheel and a driving motor, the driving wheel is rotatably arranged in the moving frame, the driving wheel is meshed and connected with the winding disk, the follower wheel is rotatably arranged in the moving frame, the follower wheel is meshed and connected with the winding disk, the driving motor is arranged on the moving frame, and the output end of the driving motor is connected to the driving wheel.

[0013] Furthermore, the moving component includes a moving screw, a moving slide bar and a moving motor, the moving screw is rotatably arranged on the bottom frame, the moving slide bar is arranged on the bottom frame, the moving frame is sleeved on the moving screw and the moving slide bar, the moving frame is meshingly connected to the moving screw, the moving frame is snap-fittingly and slidably connected to the moving slide bar, the moving motor is arranged on the bottom frame, and the output end of the moving motor is connected to the moving screw.

[0014] Furthermore, the supporting member includes a height-adjusting electric push rod and a flexible support, the height-adjusting electric push rod is arranged on the bottom frame, and the flexible support is arranged at the movable end of the height-adjusting electric push rod.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: This scheme provides a tourniquet winding device for operating room nursing. According to the different limb sizes of different patients and the inconsistent sizes of different positions of the same limb, a combination of snap-on movement and elastic buffering is adopted to achieve the technical effect of adaptive fitting winding of the patient's limbs; the setting of the auxiliary knotting device can perform a fitting knotting operation on the tourniquet after winding, effectively preventing the tourniquet from loosening during knotting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a tourniquet winding device for operating room care proposed by the present invention; Figure 2 This is a left view of a tourniquet winding device for operating room care proposed by the present invention; Figure 3 This is a front view of a tourniquet winding device for operating room care proposed by the present invention; Figure 4 A top view of a tourniquet winding device for operating room care proposed by the present invention; Figure 5 It is a schematic diagram of the structure of the auxiliary knotting device; Figure 6 A schematic diagram of the structure of a tourniquet winding device; Figure 7 It is a schematic diagram of a part of the structure of the adaptively conformable wrapping part; Figure 8 It is a structural schematic diagram of an embedded screw plugging piece; Fig. 9 It is a structural diagram of the mobile frame; Fig.10 It is a schematic diagram of the structure of the winding disk; Fig.11 It is a schematic diagram of the structure of the supporting member.

[0017] Among them, 1. bottom frame, 2. supporting member, 3. tourniquet winding device, 4. auxiliary knotting device, 5. baffle cylinder, 6. tourniquet hook and pull assembly, 7. elastic rope, 8. cylinder, 9. connecting rod, 10. connecting disk, 11. hook and pull rod, 12. limit slide plate, 13. reset spring, 14. pull handle, 15. moving frame, 16. locking rolling supporting assembly, 17. winding disk, 18. winding driving member, 19. adaptive fitting winding member, 20. moving assembly, 21. fitting moving block, 22. adaptive Spring, 23, connecting column, 24, tourniquet fixing installation part, 25, fitting movable groove, 26, fixing plate, 27, sleeve mounting tube, 28, embedded screw plugging part, 29, plugging plate, 30, embedded column, 31, limiting convex edge, 32, notch, 33, support rod, 34, supporting roller, 35, supporting groove, 36, driving wheel, 37, follower wheel, 38, driving motor, 39, moving screw, 40, moving slide rod, 41, moving motor, 42, height adjustment electric push rod, 43, flexible support.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0021] like Figure 1 , Figure 2 , Figure 3As shown, the present invention provides a tourniquet winding device for operating room care, comprising a base frame 1, a supporting member 2, a tourniquet winding device 3 and an auxiliary knotting device 4, the supporting member 2 being arranged in the base frame 1, the tourniquet winding device 3 being arranged in the base frame 1, the tourniquet winding device 3 being arranged between the supporting members 2, and the auxiliary knotting device 4 being arranged on the tourniquet winding device 3.

[0022] like Figure 1 , Fig.11 As shown, the supporting member 2 includes a height-adjusting electric push rod 42 and a flexible support 43 . The height-adjusting electric push rod 42 is arranged on the bottom frame 1 , and the flexible support 43 is arranged at the movable end of the height-adjusting electric push rod 42 .

[0023] like Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10As shown, the tourniquet winding device 3 includes a moving frame 15, an engaging rolling support assembly 16, a winding disc 17, a winding driving member 18, an adaptive fitting winding member 19 and a moving assembly 20, wherein the moving frame 15 is engaged and slidably arranged in the bottom frame 1, the engaging rolling support assembly 16 is arranged on the moving frame 15, the winding disc 17 is engaged and rotatably arranged on the engaging rolling support assembly 16, the winding driving member 18 is arranged on the engaging rolling support assembly 16, the winding driving member 18 is meshed and connected with the winding disc 17, the adaptive fitting winding member 19 is arranged on the winding disc 17, the moving assembly 20 is arranged in the bottom frame 1, and the moving frame 15 is connected with the moving assembly 20; the engaging rolling support assembly 16 includes The invention comprises a support rod 33 and a supporting roller 34, wherein the support rod 33 is arranged on the moving frame 15, and the supporting roller 34 is rotatably arranged on the support rod 33, and a supporting groove 35 is arranged on the winding disk 17, and the winding disk 17 is engaged and rotatably arranged on the supporting roller 34 through the supporting groove 35; the adaptive fitting winding member 19 comprises a fitting moving block 21, an adaptive spring 22, a connecting column 23 and a tourniquet fixing mounting member 24, a fitting moving groove 25 is arranged on the winding disk 17, and the fitting moving block 21 is engaged and slidably arranged in the fitting moving groove 25, the adaptive spring 22 is arranged between the fitting moving block 21 and the fitting moving groove 25, the connecting column 23 is arranged on the side wall of the fitting moving block 21, and the tourniquet fixing mounting member 24 The mounting member 24 is arranged on the connecting column 23; the tourniquet fixing mounting member 24 includes a fixing plate 26, a sleeve mounting tube 27 and an embedded screw-on plugging member 28, the fixing plate 26 is arranged on the connecting column 23, the sleeve mounting tube 27 is arranged on the fixing plate 26, and the embedded screw-on plugging member 28 is disassembled and arranged in the sleeve mounting tube 27; the embedded screw-on plugging member 28 includes a plugging plate 29, an embedded column 30 and a limiting convex edge 31, a notch 32 is provided at the opening of the sleeve mounting tube 27, the embedded column 30 is arranged on the blocking plate 29, the limiting convex edge 31 is arranged on the outer circumferential wall of the embedded column 30, the limiting convex edge 31 is engaged and slid along the notch 32, and the embedded column 30 is engaged and slidably arranged on the sleeve mounting In the cylinder 27, when the embedded column 30 is inserted into the notch 32 through the limiting convex edge 31, the sealing plate 29 is screwed to make the limiting convex edge 31 and the notch 32 staggered, so that the embedded screw-in sealing plate 29 can be fixed, and then the tourniquet installed on the sleeve installation cylinder 27 can be fixed; the winding drive member 18 includes a driving wheel 36, a follower wheel 37 and a driving motor 38, the driving wheel 36 is rotatably arranged in the moving frame 15, the driving wheel 36 is meshed and connected with the winding disk 17, the follower wheel 37 is rotatably arranged in the moving frame 15, the follower wheel 37 is meshed and connected with the winding disk 17, the driving motor 38 is arranged on the moving frame 15, and the output end of the driving motor 38 is connected with the driving wheel 36;The moving assembly 20 includes a moving screw 39, a moving slide 40 and a moving motor 41. The moving screw 39 is rotatably arranged on the bottom frame 1, the moving slide 40 is arranged on the bottom frame 1, the moving frame 15 is sleeved on the moving screw 39 and the moving slide 40, the moving frame 15 is meshed and connected with the moving screw 39, the moving frame 15 is engaged and slidably connected with the moving slide 40, the moving motor 41 is arranged on the bottom frame 1, and the output end of the moving motor 41 is connected with the moving screw 39. ;

[0024] like Figure 1 , Figure 5 As shown, the auxiliary knotting device 4 includes a barrier tube 5, a tourniquet hook and pull assembly 6 and an elastic rope 7. The barrier tube 5 is buckled and arranged on the tourniquet winding device 3, the tourniquet hook and pull assembly 6 is arranged in the barrier tube 5, one end of the elastic rope 7 is arranged on the tourniquet winding device 3, and the other end of the elastic rope 7 is connected to the barrier tube 5; the barrier tube 5 includes a cylinder body 8, a connecting rod 9 and a connecting disk 10, the connecting rod 9 is arranged on the bottom wall of the cylinder body 8, and the connecting disk 10 is arranged on the connecting rod 9; the tourniquet hook and pull assembly 6 includes a hook and pull rod 11, a limiting slide 12, a reset spring 13 and a handle 14, the limiting slide 12 is snap-fitted and slidably arranged on the connecting rod 9, the hook and pull rod 11 is arranged on the limiting slide 12, the hook and pull rod 11 is arranged in the cylinder body 8, the reset spring 13 is arranged between the limiting slide 12 and the connecting disk 10, and the handle 14 is arranged on the side wall of the limiting slide 12.

[0025] When in use, the limb to be hemostatic is placed on the flexible support 43, the tourniquet is put on the sleeve mounting tube 27, the embedded column 30 is inserted into the sleeve mounting tube 27 through the limiting convex edge 31 and the notch 32, the sealing plate 29 is screwed so that the limiting convex edge 31 and the notch 32 are misaligned, the embedded screw-on sealing plate 29 is fixed, and then the tourniquet installed on the sleeve mounting tube 27 is fixed, and the tourniquet is pulled to the limb, and the driving motor 38 is started. The driving motor 38 rotates to drive the driving wheel 36 to rotate, and the driving wheel 36 rotates to drive the winding disk 17 to rotate. The winding disk 17 rotates to drive the tourniquet installed on the sleeve mounting tube 27 to rotate, and the affected area is wound to stop bleeding. According to the different sizes of the limbs, under the joint action of the adaptive spring 22 and the fitting moving block 21, the technical effect of elastic adaptive winding can be achieved, and the comfort of winding is further improved. At the same time, the moving motor 41 is started, and the moving motor 41 rotates to drive the moving motor 41 to rotate The screw 39 rotates, and the movable screw 39 rotates to drive the movable frame 15 to move along the bottom frame 1 to achieve the technical effect of feed-type continuous winding. After the winding is completed, the auxiliary knotting device 4 can be removed from the movable frame 15, and the barrier tube 5 is made to fit the surface of the wound tourniquet, and the tourniquet is continued to be wound so that the tourniquet is wound on the barrier tube 5, and then it continues to be wound in the direction close to the hook and pull rod 11. When the tourniquet is wound into the hook and pull rod 11, the winding is stopped, and the handle 14 is pulled. The handle 14 moves to drive the limiting slide plate 12 to move along the connecting rod 9. The connecting rod 9 moves to drive the hook and pull rod 11 to move. The hook and pull rod 11 moves to move the tourniquet that falls into it. The tourniquet is pulled in from one end of the barrier tube 5 and pulled out from the other end of the barrier tube 5. At this time, the barrier tube 5 is pulled out and the tourniquet is tightened, so that the wound tourniquet can be knotted and fixed. The above is the specific working process of the present invention. Repeat this step when you use it next time.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the foregoing and their equivalents.

[0028] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A tourniquet winding device for operating room nursing, characterized in that: The invention comprises a bottom frame (1), a supporting member (2), a tourniquet winding device (3) and an auxiliary knotting device (4), wherein the supporting member (2) is arranged in the bottom frame (1), the tourniquet winding device (3) is arranged in the bottom frame (1), the tourniquet winding device (3) is arranged between the supporting members (2), and the auxiliary knotting device (4) is arranged on the tourniquet winding device (3); the auxiliary knotting device (4) comprises a blocking tube (5), a tourniquet hook assembly (6) and an elastic rope (7), the blocking tube (5) is buckled and arranged on the tourniquet winding device (3), the tourniquet hook assembly (6) is arranged in the blocking tube (5), one end of the elastic rope (7) is arranged on the tourniquet winding device (3), and the other end of the elastic rope (7) is connected to the blocking tube (5).

2. The tourniquet winding device for operating room nursing according to claim 1, characterized in that: The baffle cylinder (5) comprises a cylinder body (8), a connecting rod (9) and a connecting plate (10); the connecting rod (9) is arranged on the bottom wall of the cylinder body (8), and the connecting plate (10) is arranged on the connecting rod (9).

3. The tourniquet winding device for operating room nursing according to claim 2, characterized in that: The tourniquet hook and pull assembly (6) comprises a hook and pull rod (11), a limiting slide (12), a return spring (13) and a pull handle (14); the limiting slide (12) is slidably engaged on the connecting rod (9); the hook and pull rod (11) is arranged on the limiting slide (12); the hook and pull rod (11) is arranged in the cylinder (8); the return spring (13) is arranged between the limiting slide (12) and the connecting plate (10); and the pull handle (14) is arranged on the side wall of the limiting slide (12).

4. A tourniquet winding device for operating room nursing according to claim 3, characterized in that: The tourniquet winding device (3) comprises a moving frame (15), an engaging rolling support assembly (16), a winding disk (17), a winding driving member (18), an adaptive fitting winding member (19) and a moving assembly (20); the moving frame (15) is slidably arranged in the bottom frame (1); the engaging rolling support assembly (16) is arranged on the moving frame (15); the winding disk (17) is rotatably arranged on the engaging rolling support assembly (16); the winding driving member (18) is arranged on the engaging rolling support assembly (16); the winding driving member (18) is meshed and connected with the winding disk (17); the adaptive fitting winding member (19) is arranged on the winding disk (17); the moving assembly (20) is arranged in the bottom frame (1); and the moving frame (15) is connected to the moving assembly (20).

5. The tourniquet winding device for operating room nursing according to claim 4, characterized in that: The adaptive fitting winding member (19) comprises a fitting moving block (21), an adaptive spring (22), a connecting column (23) and a tourniquet fixing and mounting member (24); the winding disk (17) is provided with a fitting moving groove (25); the fitting moving block (21) is slidably arranged in the fitting moving groove (25); the adaptive spring (22) is arranged between the fitting moving block (21) and the fitting moving groove (25); the connecting column (23) is arranged on a side wall of the fitting moving block (21); and the tourniquet fixing and mounting member (24) is arranged on the connecting column (23).

6. A tourniquet winding device for operating room nursing according to claim 5, characterized in that: The tourniquet fixing mounting member (24) comprises a fixing plate (26), a sleeve mounting tube (27) and an embedded screw-on plugging member (28); the fixing plate (26) is arranged on the connecting column (23); the sleeve mounting tube (27) is arranged on the fixing plate (26); the embedded screw-on plugging member (28) is disassembled and arranged in the sleeve mounting tube (27); the embedded screw-on plugging member (28) comprises a plugging plate (29), an embedded column (30) and a limiting convex edge (31); a notch (32) is provided at the opening of the sleeve mounting tube (27); the embedded column (30) is arranged on the sealing plate (29); the limiting convex edge (31) is arranged on the outer circumferential wall of the embedded column (30); the limiting convex edge (31) is engaged and slidable along the notch (32); the embedded column (30) is engaged and slidable and arranged in the sleeve mounting tube (27).

7. A tourniquet winding device for operating room nursing according to claim 6, characterized in that: The engaging rolling support assembly (16) comprises a support rod (33) and a support roller (34); the support rod (33) is arranged on the movable frame (15); the support roller (34) is rotatably arranged on the support rod (33); a support groove (35) is provided on the winding disk (17); the winding disk (17) is rotatably arranged on the support roller (34) through the supporting groove (35).

8. The tourniquet winding device for operating room nursing according to claim 7, characterized in that: The winding drive member (18) comprises a driving wheel (36), a follower wheel (37) and a driving motor (38); the driving wheel (36) is rotatably disposed in the moving frame (15); the driving wheel (36) is meshingly connected to the winding disk (17); the follower wheel (37) is rotatably disposed in the moving frame (15); the follower wheel (37) is meshingly connected to the winding disk (17); the driving motor (38) is disposed on the moving frame (15); and an output end of the driving motor (38) is connected to the driving wheel (36).

9. A tourniquet winding device for operating room nursing according to claim 8, characterized in that: The moving assembly (20) comprises a moving screw (39), a moving slide bar (40) and a moving motor (41); the moving screw (39) is rotatably mounted on the bottom frame (1); the moving slide bar (40) is mounted on the bottom frame (1); the moving frame (15) is sleeved on the moving screw (39) and the moving slide bar (40); the moving frame (15) is meshingly connected to the moving screw (39); the moving frame (15) is snap-fittingly connected to the moving slide bar (40); the moving motor (41) is mounted on the bottom frame (1); and the output end of the moving motor (41) is connected to the moving screw (39).

10. A tourniquet winding device for operating room nursing according to claim 9, characterized in that: The supporting member (2) comprises a height-adjusting electric push rod (42) and a flexible support (43); the height-adjusting electric push rod (42) is arranged on the bottom frame (1); and the flexible support (43) is arranged at the movable end of the height-adjusting electric push rod (42).

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