阅读说明：本技术 妇科产床 (Obstetric table for gynecology department ) 是由 平贝 于 2018-08-09 设计创作，主要内容包括：本发明涉及妇科产床,其包括床架。设置在床架上端中部的中床板、根部铰接在床架上端且位于中床板一侧的活动尾板、两个根部分别铰接在活动尾板侧帮中部的腿板卡位板、分布在腿板卡位板上的腿板卡位槽、水平设置在床架上且用于被对应的腿板卡位槽咬合的腿板定位杆、以及设置在该两个腿板卡位板头部之间的腿板牵引横杠。在中床板一侧设置有根部铰接在床架上端的上活动床板,在上活动床板两侧的侧帮中部铰接有上床板卡位板的根部,在该两个上床板卡位板的头部之间连接有上床板牵引横杠,在床架上水平设置有用于与上床板卡位板的卡槽咬合接触的上床板定位杆。本发明设计合理、结构紧凑且使用方便。(The invention relates to a gynecological obstetric table, which comprises a bed frame. The middle bed board is arranged at the middle part of the upper end of the bed frame, the movable tail board is hinged to the upper end of the bed frame at the root part and positioned on one side of the middle bed board, the two leg board clamping plates are hinged to the middle part of the side edge of the movable tail board at the root part respectively, the leg board clamping grooves are distributed on the leg board clamping plates, the leg board positioning rods are horizontally arranged on the bed frame and used for being occluded by the corresponding leg board clamping grooves, and the leg board traction cross bar is arranged between the heads of the two leg board clamping plates. An upper movable bed board with the root hinged at the upper end of the bed frame is arranged on one side of the middle bed board, the root of an upper bed board position board is hinged at the middle part of the side walls on the two sides of the upper movable bed board, an upper bed board traction cross bar is connected between the heads of the two upper bed board position boards, and an upper bed board positioning rod used for being meshed and contacted with the clamping groove of the upper bed board position board is horizontally arranged on the bed frame. The invention has reasonable design, compact structure and convenient use.)

1. The utility model provides a gynaecology obstetric table, includes bedstead (1), its characterized in that: a split type gynecological obstetric table bed plate device is arranged on the bed frame (1); the split type gynecological obstetric table bed plate device comprises a middle bed plate arranged in the middle of the upper end of a bed frame (1), a movable tail plate (21) with the root hinged to the upper end of the bed frame (1) and located on one side of the middle bed plate, two leg plate clamping plates (22) with the roots hinged to the middle of the side edges of the movable tail plate (21) respectively, leg plate clamping grooves (23) distributed on the leg plate clamping plates (22), leg plate positioning rods (25) horizontally arranged on the bed frame (1) and used for being occluded by the corresponding splayed leg plate clamping grooves (23), and leg plate traction cross bars (24) arranged between the heads of the two leg plate clamping plates (22).

2. The gynecological obstetric table according to claim 1, characterized in that an upper movable bed plate (26) is arranged on one side of the middle bed plate, the root part of the upper bed plate locating plate (27) is hinged on the upper end of the bed frame (1), the root part of the upper bed plate locating plate (27) is hinged in the middle of the side walls on the two sides of the upper movable bed plate (26), an upper bed plate traction cross bar (28) is connected between the heads of the two upper bed plate locating plates (27), and an upper bed plate locating rod (29) for engaging and contacting with the clamping groove of the upper bed plate locating plate (27) is horizontally arranged on the bed frame (1).

3. The gynecological obstetric table as defined in claim 2, characterized in that an upper table board traction device is provided between the bed frame (1) and the upper movable table board (26);

the upper bed plate traction device comprises a longitudinal guide groove (30) arranged on the back surface of the upper movable bed plate (26), a T-shaped guide key (31) movably arranged in the longitudinal guide groove (30), a buffer gas spring (32) with the root part hinged on the bed frame (1), a hinge joint (33) arranged between the T-shaped guide key (31) and the buffer gas spring (32), and a swing driving cylinder/screw rod (34) arranged between the upper movable bed plate (26) and the bed frame (1); a lifting cylinder/screw rod (35) is arranged on the back surface of the upper movable bed plate (26), and a hinge seat (36) is arranged between the lower end of the lifting cylinder/screw rod (35) and the back surface of the upper bed plate clamping plate (27); a tail board traction device with the same structure as the upper bed board traction device is arranged between the bed frame (1) and the movable tail board (21).

4. The gynecological obstetric table according to claim 1, characterized in that a gynecological obstetric table bedpan device is further arranged on the bed frame (1), the gynecological obstetric table bedpan device comprises a connecting rod (2) with a root arranged on the side leg of the bed frame (1), a conical bedpan (3) arranged at the cantilever end, a lateral negative pressure suction nozzle (4) which is circumferentially distributed on the side wall of the conical bedpan (3) and used for sucking the outer side wall of the medical plastic bag placed in the conical bedpan (3), and a bottom negative pressure suction nozzle (5) which is arranged on the bottom of the conical bedpan (3) and used for sucking the outer side wall of the bottom of the medical plastic bag; an electrostatic generator (12) is arranged on the outer side wall of the upper end of the conical bedpan (3); the side wall of the conical bed pan (3) is provided with involutory cylinders (6) in pairs, and the end part of a piston rod of the involutory cylinder (6) is provided with a C-shaped clamping claw (7) for clamping the outer side wall of the medical plastic bag placed in the conical bed pan (3); the rotary sleeve (8) is arranged at the root of the connecting rod (2), the rotary sleeve (8) is rotatably arranged on the side leg of the bedstead (1), the side supporting rod (9) is horizontally arranged on the side leg of the bedstead (1), the electric push rod (10) is hinged on the side supporting rod (9), the guide sleeve (11) is sleeved on the connecting rod (2), and the guide sleeve (11) is connected with the electric push rod (10).

5. The gynecological obstetric table as claimed in claim 1, wherein the bed frame (1) is provided with a gynecological obstetric table leg device comprising a table support rod (43) positioned at four corners and having a side connection through hole at the bottom, a table side connecting rod (41) having an end inserted into the side connection through hole at one end, a bed cross connecting rod (42) having an end inserted into the side through hole at the end of the table side connecting rod (41), a table side positioning pin (46) connecting the table cross connecting rod (42) and the table side connecting rod (41), a table top side wall rod (44) having an end lower plug inserted into the corresponding table support rod (43) and being parallel to the table side connecting rod (41), a table handrail rod (45) having a lower portion mounted at the end of the table top side wall rod (44), a leg support vertical sleeve (47) welded to the table top side connecting rod (43), a leg guide sleeve (48) provided at the lower end of the leg support vertical sleeve (47), a leg positioning hole (49) provided on the leg guide sleeve (48), and a leg guide, A leg plug pin (54) inserted in the leg guide sleeve (48), a leg elastic positioning ball (50) arranged on the leg plug pin (54) and used for being clamped in the leg positioning hole (49), a leg positioning screw (51) arranged on the leg support vertical sleeve (47) and used for tightly propping against the side wall of the leg plug pin (54), an upper leg inner spline hole (52) arranged at the upper end of the leg support vertical sleeve (47) and coaxial with the leg guide sleeve (48), and a leg positioning outer spline shaft (55) inserted in the upper leg inner spline hole (52), a leg positioning table (56) arranged at the upper end of the leg positioning external spline shaft (55), a leg return spring (53) arranged between the leg positioning table (56) and the leg supporting vertical sleeve (47), a leg side connecting rod (57) with the lower end arranged on the leg positioning table (56), a leg connecting sleeve (58) arranged at the upper end of the leg side connecting rod (57), and a leg supporting pad (59) arranged on the leg connecting sleeve (58); a leg groove (62) is arranged on the leg supporting pad (59), a leg lifting screw rod (63) is arranged at the lower end of the leg supporting pad (59), and a leg lower supporting plate (64) which is accommodated in the leg groove (62) and is positioned below the leg is arranged at the upper end of the leg lifting screw rod (63); a cross key groove hole is formed in the leg connecting sleeve (58), a leg inserting cross key shaft (60) positioned below the leg supporting pad (59) is inserted into the cross key groove hole, and a leg side jacking pin (61) used for jacking the leg inserting cross key shaft (60) is arranged on the side wall of the leg connecting sleeve (58).

Technical Field

The invention relates to a gynecological obstetric table.

Background

At present, the existing obstetric table has simple structure, the upper bed plate and the leg plate are inconvenient to adjust, and the action is rigid when the bed is not lifted. Need not need medical personnel to bow manual control lift, the height-adjusting angle is limited, consequently, humanized poor, the travelling comfort is poor, brings very big uncomfortable sense and painful sense for pregnant woman's lying-in woman, and the dismouting is inconvenient moreover, how to provide a easy operation, low cost's gynaecology obstetric table becomes the technical problem that the urgent need was solved.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a gynecological obstetric table; the technical problems to be solved and the advantages to be achieved are set forth in the description which follows and in the detailed description of the embodiments.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a gynecological obstetric table comprises a bed frame, wherein a split type gynecological obstetric table bed plate device is arranged on the bed frame; split type gynaecology obstetric table bed board device is including setting up the well bed board in bedstead upper end middle part, the root articulates the activity tailboard in bedstead upper end and being located well bed board one side, two roots articulate the leg board screens board in activity tailboard side middle part respectively, the leg board screens groove of distribution on leg board screens board, the level sets up on the bedstead and is used for by the leg board screens groove interlock of the splayed that corresponds the leg board locating lever, and the leg board of setting between these two leg board screens board heads pulls the whippletree.

As a further improvement of the above technical solution:

an upper movable bed board with the root hinged at the upper end of the bed frame is arranged on one side of the middle bed board, the root of an upper bed board position board is hinged at the middle part of the side walls on the two sides of the upper movable bed board, an upper bed board traction cross bar is connected between the heads of the two upper bed board position boards, and an upper bed board positioning rod used for being meshed and contacted with the clamping groove of the upper bed board position board is horizontally arranged on the bed frame.

An upper bed plate traction device is arranged between the bed frame and the upper movable bed plate;

the upper bed plate traction device comprises a longitudinal guide groove arranged on the back surface of the upper movable bed plate, a T-shaped guide key movably arranged in the longitudinal guide groove, a buffering air spring with the root part hinged on the bed frame, a hinge joint arranged between the T-shaped guide key and the buffering air spring, and a swing driving air cylinder/screw rod arranged between the upper movable bed plate and the bed frame; a lifting cylinder/screw is arranged on the back of the upper movable bed plate, and a hinge seat is arranged between the lower end of the lifting cylinder/screw and the back of the upper bed plate clamping plate; a tail board traction device with the same structure as the upper bed board traction device is arranged between the bed frame and the movable tail board.

The bed frame is also provided with a bedpan device of the gynecological obstetric table, the bedpan device of the gynecological obstetric table comprises a connecting rod, a conical bedpan, a lateral negative pressure suction nozzle and a bottom negative pressure suction nozzle, the root part of the connecting rod is arranged on the side leg of the bed frame, the conical bedpan is arranged at the cantilever end, the lateral negative pressure suction nozzle is circumferentially distributed on the side wall of the conical bedpan and is used for sucking the outer side wall of a medical plastic bag placed in the conical bedpan, and the bottom negative pressure suction nozzle is arranged on; an electrostatic generator is arranged on the outer side wall of the upper end of the conical bed pan; the side wall of the conical bed pan is provided with involutory cylinders in pairs, and the end part of a piston rod of the involutory cylinder is provided with a C-shaped clamping claw for clamping the outer side wall of the medical plastic bag placed in the conical bed pan; the root of connecting rod is provided with the swivel sleeve, and the swivel sleeve is rotatory to be set up on bedstead side leg, and the level is provided with side branch on bedstead side leg, and it has the electric push rod to articulate on side branch, and the cover is equipped with the uide bushing on the connecting rod, and the uide bushing is connected with the electric push rod.

The leg device comprises a bed vertical support rod, a bed side connecting rod, a bed cross connecting rod, a bed side positioning pin, a bed upper side upper rod, a bed handrail rod, a leg supporting vertical sleeve, a leg guide sleeve, a leg positioning hole, a leg bolt, a leg elastic positioning ball, a leg positioning screw and a leg positioning screw, wherein the bed vertical support rod is positioned at four corners and is provided with a side connecting through hole at the bottom, the end part of the bed side connecting rod is inserted into the side connecting through hole at one end, the end part of the bed cross connecting rod is inserted into the side connecting through hole at the end part of the bed side connecting rod, the bed side positioning pin is connected with the bed cross connecting rod and is parallel to the bed side connecting rod, the lower part of the bed upper side upper rod is inserted into the corresponding bed vertical support rod, the lower part of the bed handrail rod is installed at the end part of the bed upper side upper rod, the leg supporting vertical sleeve is welded on, The leg positioning device comprises a leg upper inner spline hole, a leg positioning outer spline shaft, a leg positioning table, a leg reset spring, a leg side connecting rod, a leg connecting sleeve and a leg supporting pad, wherein the leg upper inner spline hole is arranged at the upper end of a leg supporting vertical sleeve and is coaxial with a leg guide sleeve; a leg groove is arranged on the leg supporting pad, a leg lifting screw rod is arranged at the lower end of the leg supporting pad, and a leg lower supporting plate which is accommodated in the leg groove and is positioned below the leg is arranged at the upper end of the leg lifting screw rod; a cross key groove hole is formed in the leg connecting sleeve, a leg inserting cross key shaft located below the leg supporting pad is inserted into the cross key groove hole, and a leg side jacking pin used for jacking the leg inserting cross key shaft is arranged on the side wall of the leg connecting sleeve.

The advantages of the invention are not limited to this description, but are described in more detail in the detailed description for better understanding.

Drawings

Fig. 1 is a schematic structural diagram of the bed plate device of the invention.

Fig. 2 is a schematic structural view of a first view angle of the bed plate device of the present invention.

Fig. 3 is a schematic structural diagram of the improved bed board device of the invention.

Fig. 4 is a schematic structural view of the bed plate device after secondary improvement.

Fig. 5 is a schematic structural view of the conical bedpan of the present invention.

Fig. 6 is a schematic view of the structure of the bed frame of the present invention.

Wherein: 1. a bed frame; 2. a connecting rod; 3. a conical bed pan; 4. a lateral negative pressure suction nozzle; 5. a bottom negative pressure suction nozzle; 6. a involution cylinder; 7. c-shaped clamping claws; 8. a rotating sleeve; 9. a side strut; 10. electrically pushing the push rod; 11. a guide sleeve; 12. an electrostatic generator; 21. a movable tail plate; 22. a leg plate clamping plate; 23. a leg plate clamping groove; 24. the leg plate pulls the horizontal bar; 25. a leg plate positioning rod; 26. an upper movable bed plate; 27. a bed board mounting plate is mounted on the bed board; 28. a horizontal bar is drawn by the upper bed plate; 29. a bed plate positioning rod is arranged; 30. a longitudinal guide groove; 31. a T-shaped guide key; 32. a buffer gas spring; 33. a hinge joint; 34. swing driving cylinder/screw; 35. lifting the cylinder/screw; 36. a hinged seat; 41. a bed-side connecting rod; 42. a bed cross connecting rod; 43. a bed stand support bar; 44. a bed side rail; 45. bed armrest rods; 46. a bed side locating pin; 47. a leg support vertical sleeve; 48. a leg guide sleeve; 49. leg positioning holes; 50. a leg elastic positioning ball; 51. a leg positioning screw; 52. inner splined holes in the legs; 53. a leg return spring; 54. a leg latch; 55. a leg positioning external spline shaft; 56. a leg positioning table; 57. a leg-side link; 58. leg connecting sleeves; 59. a leg support pad; 60. the legs are inserted into the cross key shafts; 61. a leg side knock pin; 62. a leg recess; 63. a leg lift screw; 64. a leg lower supporting plate.

Detailed Description

As shown in fig. 1-6, the gynecological obstetric table of the present embodiment comprises a bed frame 1, wherein a split type gynecological obstetric table plate device is arranged on the bed frame 1; the split type gynecological obstetric table bed plate device comprises a middle bed plate arranged in the middle of the upper end of a bed frame 1, a movable tail plate 21 with the root hinged to the upper end of the bed frame 1 and located on one side of the middle bed plate, two leg plate clamping plates 22 with the roots hinged to the middle of the side edges of the movable tail plate 21 respectively, leg plate clamping grooves 23 distributed on the leg plate clamping plates 22, leg plate positioning rods 25 horizontally arranged on the bed frame 1 and used for being occluded by the corresponding leg plate clamping grooves 23, and leg plate traction cross bars 24 arranged between the heads of the two leg plate clamping plates 22.

An upper movable bed board 26 with the root hinged at the upper end of the bed frame 1 is arranged at one side of the middle bed board, the root of an upper bed board clamping plate 27 is hinged at the middle part of the side walls at the two sides of the upper movable bed board 26, an upper bed board traction cross bar 28 is connected between the heads of the two upper bed board clamping plates 27, and an upper bed board positioning rod 29 which is used for being meshed and contacted with the clamping groove of the upper bed board clamping plate 27 is horizontally arranged on the bed frame 1.

An upper bed plate traction device is arranged between the bed frame 1 and the upper movable bed plate 26;

the upper bed board traction device comprises a longitudinal guide groove 30 arranged on the back surface of the upper movable bed board 26, a T-shaped guide key 31 movably arranged in the longitudinal guide groove 30, a buffering air spring 32 with the root part hinged on the bed frame 1, a hinge joint 33 arranged between the T-shaped guide key 31 and the buffering air spring 32, and a swing driving air cylinder/screw 34 arranged between the upper movable bed board 26 and the bed frame 1.

A lifting cylinder/screw 35 is arranged on the back surface of the upper movable bed plate 26, and a hinge seat 36 is arranged between the lower end of the lifting cylinder/screw 35 and the back surface of the upper bed plate clamping plate 27.

A tail board traction device with the same structure as the upper bed board traction device is arranged between the bed frame 1 and the movable tail board 21. The leg plate retaining groove 23 is preferably of a figure eight configuration. Thereby make things convenient for the draw-in groove from the locating lever roll-off with slide in, reduce the resistance.

The bed board is separated through hinging, so that the angles of all parts can be conveniently adjusted, and the disassembly and the assembly are convenient.

When the invention is used, because the principle of the movable tail plate 21 is the same as that of the upper movable bed plate 26, and the upper movable bed plate 26 is taken as an example for explanation below, when the angle of the upper movable bed plate 26 needs to be adjusted, the upper bed plate traction cross bar 28 is pulled by hands, the upper movable bed plate 26 is driven to reach a specified angle through the upper bed plate position plate 27, then the upper bed plate position plate 27 is lowered, so that the clamping groove is occluded on the upper bed plate positioning rod 29, thereby realizing the locking of any angle,

as an improvement, the automatic driving is realized by swinging the driving cylinder/screw 34, the damping buffering is realized by the buffering air spring 32, so as to offset the discomfort degree of the adjusting angle, the T-shaped guide key 31 slides in the longitudinal guide groove 30, and the flexibility is improved by the hinged joint 33.

As a further improvement, when the bed board descends, the lifting cylinder/screw 35 retracts, the hinged seat 36 is used for lifting the clamping plate, the clamping groove is automatically separated from the positioning rod, so that the blocking is avoided, the descending adjustment is smooth, when the specified position is reached, the lifting cylinder/screw 35 extends, the hinged seat 36 is used for descending, the clamping groove is automatically meshed with the positioning rod for positioning, and the long-time stress of the screw/cylinder is avoided.

Be provided with gynaecology's obstetric table bedpan device on bedstead 1, it includes that the root sets up connecting rod 2 on bedstead 1 side leg, sets up the toper bedpan 3 at the cantilever end, the circumference distributes on the 3 lateral walls of toper bedpan and is used for the actuation to place the side direction negative pressure suction nozzle 4 of the medical plastic bag lateral wall in toper bedpan 3 to and set up on 3 bottoms of toper bedpan and be used for the actuation to place the bottom lateral wall of medical plastic bag 5 negative pressure suction nozzle.

An electrostatic generator 12 is arranged on the outer side wall of the upper end of the conical bedpan 3.

The side walls of the conical bed pan 3 are provided with involutory cylinders 6 in pairs, and the end part of a piston rod of the involutory cylinder 6 is provided with a C-shaped clamping claw 7 for clamping the outer side wall of the medical plastic bag placed in the conical bed pan 3.

The root of the connecting rod 2 is provided with a rotating sleeve 8, the rotating sleeve 8 is rotatably arranged on the side leg of the bedstead 1, the side leg of the bedstead 1 is horizontally provided with a side supporting rod 9, the side supporting rod 9 is hinged with an electric push rod 10, the connecting rod 2 is sleeved with a guide sleeve 11, and the guide sleeve 11 is connected with the electric push rod 10.

When the medical garbage bag opening device is used, a medical garbage bag is placed in the conical bedpan 3, the plastic bag can be automatically opened only by starting the lateral negative pressure suction nozzle 4 and the bottom negative pressure suction nozzle 5, and then, the automatic suction is realized through the electrostatic generator 12, so that the garbage bag is better opened and is sucked with the port. After being full of rubbish, the starting is to closing cylinder 6 and promote C type block claw 7 to realize that the disposal bag is closed, through C type structure, thereby make the better closure of disposal bag, the manufacturability is good. Then, the conical bedpan 3 swings outwards through the electric push rod 10, the guide sleeve 11 and the connecting rod 2, so that the garbage bag is convenient to take out. Then the garbage bag is taken out and is brought back to the original position through the electric push rod.

The leg device of the obstetric table in the embodiment is provided with a leg device of the obstetric table on a bed frame 1, which comprises a bed stand support bar 43 with a side connecting through hole at the bottom, a bed side connecting rod 41 with an end inserted into the side connecting through hole at one end, a bed cross connecting rod 42 with an end inserted into the side through hole at the end of the bed side connecting rod 41, a bed side positioning pin 46 connecting the bed cross connecting rod 42 and the bed side connecting rod 41, a bed upper side rod 44 with a lower end inserted into the corresponding bed stand support bar 43 and parallel to the bed side connecting rod 41, a bed handrail rod 45 with a lower part installed at the end of the bed upper side rod 44, a leg support stand sleeve 47 welded on the bed stand support bar 43, a leg guide sleeve 48 arranged at the lower end of the leg support stand sleeve 47, a leg positioning hole 49 arranged on the leg guide sleeve 48, a leg plug 54 inserted into the leg guide sleeve 48, a leg elastic positioning ball 50 arranged on the leg plug 54 and used for being inserted into the, A leg positioning screw 51 provided on the leg supporting vertical sleeve 47 for abutting against a side wall of the leg plug 54, an upper leg inner spline hole 52 provided at an upper end of the leg supporting vertical sleeve 47 and coaxial with the leg guide sleeve 48, a leg positioning outer spline shaft 55 inserted into the upper leg inner spline hole 52, a leg positioning table 56 provided at an upper end of the leg positioning outer spline shaft 55, a leg return spring 53 provided between the leg positioning table 56 and the leg supporting vertical sleeve 47, a leg side link 57 having a lower end provided on the leg positioning table 56, a leg connecting sleeve 58 provided at an upper end of the leg side link 57, and a leg supporting pad 59 provided on the leg connecting sleeve 58.

Leg recesses 62 are provided in the leg support pads 59, leg lifting screws 63 are provided at the lower ends of the leg support pads 59, and lower leg plates 64 which are accommodated in the leg recesses 62 and located below the legs are provided at the upper ends of the leg lifting screws 63.

A cross key groove hole is formed in the leg connecting sleeve 58, a leg insertion cross key shaft 60 located below the leg supporting pad 59 is inserted into the cross key groove hole, and a leg side knock pin 61 for knocking the leg insertion cross key shaft 60 is provided on the side wall of the leg connecting sleeve 58.

When the present invention is used, the bed upper side bar 44, the bed side link rod 41, the bed cross link rod 42, and the bed upright support bar 43 are used as the basic structure of the bed frame, the bed side link rod 41 is inserted into the bed upright support bar 43, the bed cross link rod 42 is inserted into the inner hole of the bed side link rod 41 positioned in the bed upright support bar 43, and then the bed cross link rod 42 and the bed upright support bar 43 are connected by the bed side positioning pin 46.

Make things convenient for the lying-in woman to give birth to with strength through bed handrail pole 45, make things convenient for the shank to place through leg supporting pad 59, slightly adjust, vibrate the massage through leg lifting screw 63 top leg bottom plate 64 realization. Realize fixed stay through leg support vertical sleeve 47, leg bolt 54 inserts leg uide bushing 48 and realizes the guiding orientation, through leg locating hole 49, leg elastic positioning ball 50 realizes high location, realize the side direction location through leg set screw 51, realize the swing positioning through internal spline 52 on the leg and leg location external spline shaft 55, it is quick convenient to push up leg positioning table 56 through leg reset spring 53, realize connecting through leg side connecting rod 57, realize the swing positioning through leg plug cross key shaft 60 cooperation cross slotted hole, realize supporting through leg adapter sleeve 58, realize the location through leg side knock pin 61, conveniently hold the leg bottom plate 64 of extreme low position through leg recess 62. Each part is disassembled and assembled, and the operation is convenient and fast.

The invention has the advantages of reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, capital saving, compact structure and convenient use.

The present invention has been fully described for a clear disclosure and is not to be considered as an exemplification of the prior art.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious as a person skilled in the art to combine several aspects of the invention. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.