CN108095928B

CN108095928B - Medical sickbed based on bidirectional self-locking

Info

Publication number: CN108095928B
Application number: CN201711382062.3A
Authority: CN
Inventors: 王敬东; 刘金龙
Original assignee: Qingdao Huangdao District Central Hospital
Current assignee: Qingdao Huangdao District Central Hospital
Priority date: 2017-12-20
Filing date: 2017-12-20
Publication date: 2019-12-17
Anticipated expiration: 2037-12-20
Also published as: CN108095928A

Abstract

The invention belongs to the technical field of sickbeds, and particularly relates to a medical sickbed based on bidirectional self-locking, which comprises a trigger mechanism, a sickbed body and a self-locking mechanism, wherein when people use the sickbed designed by the invention, a first rotating shaft can be rotated by the movement of a driving rod no matter a user pushes forwards, pulls backwards or pulls obliquely or pushes the trigger driving rod; when the first rotating shaft rotates, the first rotating shaft can drive the second rotating shaft to rotate; the second rotating shaft rotates to enable the four arc-shaped friction plates to lose the constraint on the limiting cylinder and the rotating shaft; namely, the rotating shaft and the second transmission shaft can rotate freely; namely, the roller can rotate freely; namely, the sickbed can be normally used. When the user wants to stop the sickbed, the driving of the trigger driving rod is stopped at the moment, so that the rotating shaft and the second transmission shaft lose the rotating function; namely the roller loses the rotation function; i.e. the patient bed is at rest at this time.

Description

Medical sickbed based on bidirectional self-locking

Technical Field

The invention belongs to the technical field of sickbeds, and particularly relates to a medical sickbed based on bidirectional self-locking.

Background

In the existing hospital, the sickbed is always required to be moved when patients are transferred, and the sickbed is required to be moved at the moment; but it is necessary to keep the bed in a stationary state after the bed is stopped; if the sickbed moves at the moment; it is possible to make the patient on the sickbed suffer vibration or collide with other articles and other patients, which is extremely unsuitable for some patients, especially for the patient needing nursing after cardiology department, the vibration of the patient should be reduced as much as possible, and the wound after the department of cardiology should be prevented from cracking again due to vibration and shaking. Therefore, it is necessary to design a self-locking sickbed when the sickbed is in a static state.

The invention designs a medical sickbed based on bidirectional self-locking to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a medical sickbed based on bidirectional self-locking, which is realized by adopting the following technical scheme.

The utility model provides a sick bed is used in medical treatment based on two-way auto-lock which characterized in that: the sickbed comprises a trigger mechanism, a sickbed body and a self-locking mechanism, wherein the trigger mechanism is arranged on the upper side of a baffle at one end of the sickbed body; four self-locking mechanisms are respectively arranged at four corners of the lower side surface of the sickbed body.

The trigger mechanism comprises a supporting block, a stop lever, a trigger mounting structure, a trigger driving rod, a guide block, a trigger block, an adjusting block, a compression spring, a first gear, a guide groove, a first guide groove, a mounting cavity, a first guide block, a connecting plate, a first rack, a first rotating shaft, a first notch and a limiting spring, wherein one end of the supporting block is provided with a through guide groove; the two supporting blocks are respectively arranged on two sides of the upper end of a baffle plate on one side of the sickbed body; the two stop rods are uniformly arranged between the two supporting blocks and are close to the bed plate on the sickbed body; the trigger mounting structure consists of an arched connection and two mounting blocks, wherein the two mounting blocks are respectively mounted at two ends of the arched connection; the trigger mounting structure is mounted at the upper ends of the two supporting blocks; two mounting blocks in the trigger mounting structure are respectively positioned at two sides of the two supporting blocks; the inner side of one of the two mounting blocks is provided with a mounting cavity, the end surface of one side of the mounting block, which is close to the corresponding supporting block, is provided with a first notch, the first notch is matched with the guide groove on the corresponding supporting block, and the upper end surface and the lower end surface of one side of the mounting cavity, which is close to the first notch, in the mounting block are symmetrically provided with two first guide grooves; one end of the trigger block is provided with an inclined plane; one end of the trigger driving rod is provided with a guide block, and the other end of the trigger driving rod is provided with a trigger block; the trigger driving rod is arranged on the two supporting blocks through the matching of the guide block and the trigger block with the guide grooves on the two supporting blocks; a limiting spring is respectively arranged between the two side surfaces of the guide block and the two side surfaces of the first guide groove on the corresponding support block; a limiting spring is respectively arranged between two side surfaces of the trigger block and two side surfaces of the first guide groove on the corresponding supporting block; the adjusting block is provided with an inclined plane; two first guide blocks are symmetrically arranged on two sides of the adjusting block; the adjusting block is arranged in the mounting cavity on the corresponding mounting block through the matching of the two first guide blocks and the two first guide grooves on the mounting block; the inclined plane on the adjusting block is matched with the inclined plane on the triggering block; one end of the connecting plate is arranged on the side surface of the adjusting block which is not provided with the inclined surface; the other end of the connecting plate is provided with a first rack; a compression spring is arranged between one side of the connecting plate, which is far away from the upper inclined plane of the adjusting block, and the corresponding side surface of the mounting cavity; one end of the first rotating shaft is arranged on the upper end surface of the mounting cavity on the corresponding mounting block; the first gear is arranged on the first rotating shaft; the first gear is meshed with the first rack.

The self-locking mechanism comprises a supporting rod, an installation ring shell, an installation U-shaped shell, a roller, a rotating shaft, a first transmission shaft, a second transmission shaft, a limiting cylinder, a telescopic connection, a driving plate, an extrusion spring, an arc friction plate, an annular guide block, a rotating groove, a shaft hole, an annular guide groove, a friction plate avoiding groove, a third transmission shaft, a first supporting shaft, a first support, a fourth transmission shaft, a second support, an installation hole, a second rotating shaft, a second rack, a third rotating shaft, a fourth rotating shaft, a fifth rotating shaft, a sixth rotating shaft, a third rack, a second gear, a third gear, a fourth rack, a fifth gear, a sixth gear, a square hole, a second guide groove, a third guide groove, a driving shaft hole, an avoiding notch, a second guide block and a third guide block, wherein the lower end of the supporting rod is provided with the rotating groove; four friction plate avoiding grooves are formed in the inner circular surface on the upper side of the rotating groove; every two of the four friction plate avoiding grooves are uniformly distributed from top to bottom in a group, and the two friction plate avoiding grooves in the same group are mutually symmetrical; the inner circle surface at the lower side of the rotating groove is provided with an annular guide groove; a square hole is formed in the outer circular surface of the supporting rod and is positioned on the upper side of the rotating groove; two second guide grooves are symmetrically formed in the two side faces of the square hole; a third guide groove is formed in the side face of the square hole; and the third guide groove is positioned at the lower side of the second guide groove on the same side surface; the upper end of the supporting rod is arranged on the end surface of the lower side of the sickbed body; the center of the rotating shaft is provided with a through shaft hole; the outer circular surface of the rotating shaft is provided with an annular guide block; the rotating shaft is arranged at the lower end of the supporting rod through the matching of the annular guide block and the annular guide groove; two shaft holes are symmetrically arranged in the U-shaped groove for installing the U-shaped shell; the two shaft holes are communicated with the inner side of the mounting U-shaped shell; the mounting U-shaped shell is mounted at the lower end of the rotating shaft; one end of the first supporting shaft is provided with a bevel gear; one end of the first supporting shaft, which is not provided with the bevel gear, is arranged in one of the two shaft holes on the installation U-shaped shell; one end of the first supporting shaft with the bevel gear penetrates through the other shaft hole of the two shaft holes on the mounting U-shaped shell and is positioned on the inner side of the mounting U-shaped shell; the roller is arranged on the first supporting shaft and is positioned in a U-shaped groove on the U-shaped shell; both ends of the fourth transmission shaft are provided with bevel teeth; the fourth transmission shaft is arranged on the inner side of the mounting U-shaped shell through a second support; one end of the fourth transmission shaft is meshed with the first support shaft through bevel teeth; the third transmission shaft is arranged on the inner side of the mounting U-shaped shell through a first support; one end of the third transmission shaft is meshed with the other end of the fourth transmission shaft through bevel teeth; one end of the second transmission shaft is provided with bevel teeth; the second transmission shaft is arranged in the shaft hole on the rotating shaft; one end of the second transmission shaft is meshed with the other end of the third transmission shaft through bevel teeth; the limiting cylinder is arranged at the other end of the second transmission shaft and is positioned in the rotating groove; two avoidance notches are symmetrically formed in the inner circular surface on the outer side of the mounting ring shell; four mounting holes are formed in the inner circle surface on the outer side of the mounting ring shell, every two of the four mounting holes are uniformly distributed up and down in a group, and the two mounting holes in the same group are mutually symmetrical; the mounting ring shell is mounted on the outer circular surface of the lower side of the supporting rod; two avoiding gaps on the mounting ring shell are matched with the square hole on the supporting rod; four mounting holes on the mounting ring shell are matched with four friction plate avoiding grooves on the supporting rod; one end of the second rotating shaft is arranged on the side surface of the hole above the supporting rod; the fourth gear is arranged on the second rotating shaft; two second guide blocks are symmetrically arranged on two sides of the fourth rack; the fourth rack is arranged in a square hole on the supporting rod through the matching of the two second guide blocks and the two second guide grooves on the supporting rod; the fourth rack is meshed with the fourth gear; one end of the third rotating shaft is arranged on the side surface of the hole above the supporting rod; the third gear is arranged on the third rotating shaft; the third gear is matched with the fourth rack; one end of the fifth rotating shaft is arranged on the side surface of the hole above the supporting rod; the fifth gear is arranged on the fifth rotating shaft; the fifth gear is matched with the fourth rack; the fifth gear and the third gear are respectively positioned at two sides of the fourth rack; one end of the fourth rotating shaft is arranged on the side surface of the hole above the supporting rod; the second gear is arranged on the fourth rotating shaft; the second gear is positioned at the lower side of the third gear and is meshed with the third gear; one end of the sixth rotating shaft is arranged on the side surface of the hole above the supporting rod; the sixth gear is arranged on the sixth rotating shaft; the sixth gear is positioned at the lower side of the fifth gear, and the sixth gear is meshed with the fifth gear; a third guide block is arranged on one side of the second rack; the second rack is arranged in a square hole on the supporting rod through the matching of a third guide block and a third guide groove on the supporting rod; the second rack is located on the lower side of the second gear and the fifth gear, and the second rack is meshed with the second gear and the fifth gear respectively.

The structure installed at the lower end of the inner side of the installation ring shell is divided into two parts, the two parts installed at the lower end of the inner side of the installation ring shell are completely identical in structure and are mutually symmetrical, and for any one part, two telescopic connections are symmetrically installed on one side of the drive plate; the driving plate is installed on the inner side of the installation ring shell in a matching way with the two corresponding installation holes on the installation ring shell through two telescopic connections; an extrusion spring is arranged between the driving plate and the inner circular surface of the mounting ring shell; the two arc-shaped friction plates are respectively arranged on the end surfaces of the two telescopic connectors which are far away from one side of the driving plate; the two arc-shaped friction plates are matched with the two corresponding friction plate avoiding grooves on the supporting rod; the two arc-shaped friction plates are respectively matched with the limiting cylinder and the rotating shaft; the third rack is mounted on the upper end of the drive plate.

The two third racks are respectively meshed with the second gear and the sixth gear.

The first rotating shaft and the second rotating shaft are connected through a flexible shaft.

As a further improvement of the technology, the telescopic connection comprises a telescopic outer sleeve, a telescopic inner rod and a driving spring, wherein one end of the telescopic inner rod is arranged on the driving plate; one end of the telescopic outer sleeve is nested and arranged at the other end of the telescopic inner rod; a driving spring is arranged between the telescopic inner rod arranged at the inner side of the telescopic outer sleeve and the inner end surface of the telescopic outer sleeve; the other end of the telescopic outer sleeve is provided with an arc-shaped friction plate.

as a further improvement of the technology, the trigger block and the adjusting block are in a balanced state under the common elastic force of the two corresponding limiting springs and the compression spring in the initial state.

As a further improvement of the technology, the annular guide blocks and the corresponding annular guide grooves are installed through bearings.

As a further improvement of the technology, the limiting spring is a compressible and stretchable spring; the trigger driving rod is used for returning the trigger driving rod.

Compared with the traditional sickbed technology, the sickbed designed by the invention can control the locking state of the sickbed rollers by identifying the stress state of the push rod on the sickbed, thereby controlling the movement and the stop of the sickbed.

Two supporting blocks are respectively arranged on two sides of the upper end of a baffle on one side of a sickbed body; the two stop rods are uniformly arranged between the two supporting blocks and are close to the bed plate on the sickbed body; the trigger mounting structure is mounted at the upper ends of the two supporting blocks; one end of the trigger block is provided with an inclined plane; one end of the trigger driving rod is provided with a guide block, and the other end of the trigger driving rod is provided with a trigger block; the trigger driving rod is arranged on the two supporting blocks through the matching of the guide block and the trigger block with the guide grooves on the two supporting blocks; the adjusting block is provided with an inclined plane; the adjusting block is arranged in the mounting cavity on the corresponding mounting block through the matching of the two first guide blocks and the two first guide grooves on the mounting block; a limiting spring is respectively arranged between the two side surfaces of the guide block and the two side surfaces of the first guide groove on the corresponding support block; a limiting spring is respectively arranged between two side surfaces of the trigger block and two side surfaces of the first guide groove on the corresponding supporting block; the inclined plane on the adjusting block is matched with the inclined plane on the triggering block; one end of the connecting plate is arranged on the adjusting block; the other end of the connecting plate is provided with a first rack; a compression spring is arranged between one side of the connecting plate, which is far away from the upper inclined plane of the adjusting block, and the corresponding side surface of the mounting cavity; one end of the first rotating shaft is arranged on the upper end surface of the mounting cavity on the corresponding mounting block; the first gear is arranged on the first rotating shaft; the first gear is meshed with the first rack; the trigger block and the adjusting block are in a balanced state under the common elasticity of the two corresponding limiting springs and the compression spring in the initial state. When the trigger driving rod is pushed forwards, the trigger driving rod can drive the trigger block to move forwards along the first guide groove on the corresponding supporting block; the trigger block moves forwards to push the regulating block to move forwards; the adjusting block moves forwards to drive the connecting plate to move forwards; the connecting plate moves forwards to drive the first rack to move forwards; the forward movement of the first rack can enable the first gear to rotate; the first gear rotates to drive the first rotating shaft to rotate; when the trigger driving rod is pulled backwards, the trigger driving rod drives the trigger block to move backwards along the first guide groove on the corresponding supporting block; in the process that the trigger block moves backwards, the adjusting block moves backwards under the action of the compression spring; the adjusting block moves backwards to drive the connecting plate to move backwards; the connecting plate moves backwards to drive the first rack to move backwards; the first gear is rotated by the backward movement of the first rack; the first gear rotates to drive the first rotating shaft to rotate; when the trigger driving rod is pushed towards one side of the adjusting block, the trigger driving block drives the trigger block to move towards the side provided with the adjusting block; the trigger block moves towards one side provided with the adjusting block, so that the adjusting block moves forwards under the matching of the first guide block and the first guide groove; the adjusting block moves forwards to drive the connecting plate to move forwards; the connecting plate moves forwards to drive the first rack to move forwards; the forward movement of the first rack can enable the first gear to rotate; the first gear rotates to drive the first rotating shaft to rotate; when the trigger driving rod is pulled by the side far away from the adjusting block, the trigger driving block drives the trigger block to move towards the side far away from the side provided with the adjusting block; the trigger block moves towards one side far away from the side provided with the adjusting block, so that the adjusting block moves backwards under the matching of the first guide block and the first guide groove; the adjusting block moves backwards to drive the connecting plate to move backwards; the connecting plate moves backwards to drive the first rack to move backwards; the first gear is rotated by the backward movement of the first rack; the first gear rotates to drive the first rotating shaft to rotate.

In the invention, the mounting ring shell is mounted on the outer circular surface of the lower side of the support rod; one end of the second rotating shaft is arranged on the side surface of the hole above the supporting rod; the fourth gear is arranged on the second rotating shaft; two second guide blocks are symmetrically arranged on two sides of the fourth rack; the fourth rack is arranged in a square hole on the supporting rod through the matching of the two second guide blocks and the two second guide grooves on the supporting rod; the fourth rack is meshed with the fourth gear; one end of the third rotating shaft is arranged on the side surface of the hole above the supporting rod; the third gear is arranged on the third rotating shaft; the third gear is matched with the fourth rack; one end of the fifth rotating shaft is arranged on the side surface of the hole above the supporting rod; the fifth gear is arranged on the fifth rotating shaft; the fifth gear is matched with the fourth rack; the fifth gear and the third gear are respectively positioned at two sides of the fourth rack; one end of the fourth rotating shaft is arranged on the side surface of the hole above the supporting rod; the second gear is arranged on the fourth rotating shaft; the second gear is positioned at the lower side of the third gear and is meshed with the third gear; one end of the sixth rotating shaft is arranged on the side surface of the hole above the supporting rod; the sixth gear is arranged on the sixth rotating shaft; the sixth gear is positioned at the lower side of the fifth gear, and the sixth gear is meshed with the fifth gear; a third guide block is arranged on one side of the second rack; the second rack is arranged in a square hole on the supporting rod through the matching of a third guide block and a third guide groove on the supporting rod; the second rack is positioned at the lower sides of the second gear and the fifth gear and is respectively meshed with the second gear and the fifth gear; the first rotating shaft is connected with the second rotating shaft through a flexible shaft; the two third racks are respectively meshed with the second gear and the sixth gear; when the first rotating shaft rotates, the first rotating shaft can drive the second rotating shaft to rotate; the second rotating shaft rotates to drive the fourth gear to rotate; the fourth gear rotates to enable the fourth rack to move; when the fourth rack is meshed with the fifth gear in the moving process of the fourth rack, the fourth rack moves to drive the fifth gear to rotate; the fifth gear rotates to drive the sixth gear to rotate; the rotation of the sixth gear can cause the corresponding third rack to move towards the side far away from the sixth gear; meanwhile, when the fifth gear rotates, the fifth gear can enable the second rack to move; the second gear is driven to rotate by the movement of the second rack; the second gear wheel rotates to drive the corresponding third gear to move towards the side far away from the second gear; when the fourth rack is meshed with the third gear in the moving process of the fourth rack, the fourth rack moves to drive the third gear to rotate; the third gear rotates to drive the second gear to rotate; the second gear wheel rotates to enable the corresponding third rack to move towards the side far away from the second gear wheel; meanwhile, when the second gear rotates, the fifth gear can enable the second rack to move; the sixth gear is driven to rotate by the movement of the second rack; the rotation of the sixth gear drives the corresponding third rack to move towards the side far away from the sixth gear.

The structure installed at the lower end of the inner side of the installation ring shell is divided into two parts, the two parts installed at the lower end of the inner side of the installation ring shell have the same structure and are mutually symmetrical, and for any one part, one side of the drive plate is symmetrically provided with two telescopic connections; the driving plate is installed on the inner side of the installation ring shell in a matching way with the two corresponding installation holes on the installation ring shell through two telescopic connections; an extrusion spring is arranged between the driving plate and the inner circular surface of the mounting ring shell; the two arc-shaped friction plates are respectively arranged on the end surfaces of the two telescopic connectors which are far away from one side of the driving plate; the two arc-shaped friction plates are matched with the two corresponding friction plate avoiding grooves on the supporting rod; the two arc-shaped friction plates are respectively matched with the limiting cylinder and the rotating shaft; the third rack is arranged at the upper end of the driving plate; when the third rack moves towards one side far away from the limiting cylinder, the third rack can drive the corresponding driving plate to move towards one side far away from the limiting cylinder; the driving plate moves to drive the telescopic inner rods in the two corresponding telescopic connections to move towards one side far away from the limiting cylinder; the two telescopic inner rods move towards one side far away from the limiting cylinder, so that the corresponding two arc-shaped friction plates lose the extrusion effect of the corresponding driving springs on the arc-shaped friction plates.

The upper end of the supporting rod is arranged on the end surface of the lower side of the sickbed body; the rotating shaft is arranged at the lower end of the supporting rod through the matching of the annular guide block and the annular guide groove; the mounting U-shaped shell is mounted at the lower end of the rotating shaft; one end of the first supporting shaft is provided with a bevel gear; one end of the first supporting shaft, which is not provided with the bevel gear, is arranged in one of the two shaft holes on the installation U-shaped shell; one end of the first supporting shaft with the bevel gear penetrates through the other shaft hole of the two shaft holes on the mounting U-shaped shell and is positioned on the inner side of the mounting U-shaped shell; the roller is arranged on the first supporting shaft and is positioned in a U-shaped groove on the U-shaped shell; both ends of the fourth transmission shaft are provided with bevel teeth; the fourth transmission shaft is arranged on the inner side of the mounting U-shaped shell through a second support; one end of the fourth transmission shaft is meshed with the first support shaft through bevel teeth; the third transmission shaft is arranged on the inner side of the mounting U-shaped shell through a first support; one end of the third transmission shaft is meshed with the other end of the fourth transmission shaft through bevel teeth; one end of the second transmission shaft is provided with bevel teeth; the second transmission shaft is arranged in the shaft hole on the rotating shaft; one end of the second transmission shaft is meshed with the other end of the third transmission shaft through bevel teeth; the limiting cylinder is arranged at the other end of the second transmission shaft and is positioned in the rotating groove; when the roller rotates, the roller can drive the first supporting shaft to rotate; the first supporting shaft rotates to drive the fourth transmission shaft to rotate; the fourth transmission shaft rotates to drive the third transmission shaft to rotate; the third transmission shaft rotates to drive the second transmission shaft to rotate; the second transmission shaft rotates to drive the limiting cylinder to rotate; in the rolling process of the roller, if the rotating direction of the roller is changed, the roller can drive the installation U-shaped shell and the rotating shaft to rotate around the axis of the rotating shaft.

When people use the sickbed designed by the invention, the first rotating shaft can be rotated by the movement of the driving rod no matter the user pushes forwards, pulls backwards or pulls obliquely or pushes the trigger driving rod; when the first rotating shaft rotates, the first rotating shaft can drive the second rotating shaft to rotate; the second rotating shaft rotates to drive the fourth gear to rotate; the fourth gear rotates to enable the fourth rack to move; when the fourth rack is meshed with the fifth gear in the moving process of the fourth rack, the fourth rack moves to drive the fifth gear to rotate; the fifth gear rotates to drive the sixth gear to rotate; the rotation of the sixth gear can cause the corresponding third rack to move towards the side far away from the sixth gear; meanwhile, when the fifth gear rotates, the fifth gear can enable the second rack to move; the second gear is driven to rotate by the movement of the second rack; the second gear wheel rotates to drive the corresponding third gear to move towards the side far away from the second gear; when the fourth rack is meshed with the third gear in the moving process of the fourth rack, the fourth rack moves to drive the third gear to rotate; the third gear rotates to drive the second gear to rotate; the second gear wheel rotates to enable the corresponding third rack to move towards the side far away from the second gear wheel; meanwhile, when the second gear rotates, the fifth gear can enable the second rack to move; the sixth gear is driven to rotate by the movement of the second rack; the rotation of the sixth gear drives the corresponding third rack to move towards the side far away from the sixth gear. When the third rack moves towards one side far away from the limiting cylinder, the third rack can drive the corresponding driving plate to move towards one side far away from the limiting cylinder; the driving plate moves to drive the telescopic inner rods in the two corresponding telescopic connections to move towards one side far away from the limiting cylinder; the two telescopic inner rods move towards one side far away from the limiting cylinder, so that the two arc-shaped friction plates lose the extrusion effect of the corresponding driving springs on the two arc-shaped friction plates. At the moment, the four arc-shaped friction plates lose the constraint on the limiting cylinder and the rotating shaft; namely, the rotating shaft and the second transmission shaft can rotate freely; namely, the roller can rotate freely; namely, the sickbed can be normally used. When the user wants to stop the sickbed, the driving of the trigger driving rod is stopped at the moment, and the trigger driving rod is restored to the original position under the combined action of the corresponding compression spring and the limiting spring; namely, the adjusting block is restored to the original position; namely, the corresponding third rack is restored to the original position; at the moment, the corresponding arc-shaped friction plate plays a role in limiting the corresponding limiting cylinder and the corresponding rotating shaft under the action of the corresponding extrusion spring; the rotating shaft and the second transmission shaft lose rotating function; namely the roller loses the rotation function; i.e. the patient bed is at rest at this time.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

Fig. 3 is a schematic structural view of the trigger mechanism.

Fig. 4 is a schematic view of the internal structure of the trigger mechanism.

Fig. 5 is a schematic diagram of trigger block installation.

Fig. 6 is a schematic structural view of the trigger mounting structure.

Fig. 7 is a schematic view of the first channel distribution.

FIG. 8 is a schematic view of the support block configuration.

Fig. 9 is a schematic view of the structure of the regulating block.

Fig. 10 is a schematic view of the first rack and the first gear in cooperation.

Fig. 11 is an external view of the self-locking mechanism.

Fig. 12 is a schematic view of the internal structure of the self-locking mechanism.

Fig. 13 is an installation schematic diagram of the internal structure of the self-locking mechanism.

Fig. 14 is a schematic view of the installation of the rotating shaft.

Fig. 15 is a schematic view of the support bar structure.

FIG. 16 is a schematic view of an arc-shaped friction plate and a limiting cylinder.

FIG. 17 is a schematic view of the engagement of the arcuate friction plate with the rotating shaft.

Fig. 18 is a second guide block installation schematic.

Fig. 19 is a third guide block installation schematic.

Fig. 20 is a schematic view of the structure of the annular guide groove.

fig. 21 is a schematic view of the ring guide installation.

FIG. 22 is a schematic view of a roller mounting.

Figure 23 is a schematic view of a spacing cylinder installation.

FIG. 24 is a fourth driveshaft installation schematic.

Fig. 25 is a schematic view of the mounting collar shell structure.

Fig. 26 is a schematic view of a telescopic connection structure.

Number designation in the figures: 1. a trigger mechanism; 2. a sickbed body; 3. a self-locking mechanism; 4. a support block; 5. a stop lever; 6. triggering the mounting structure; 7. triggering the driving rod; 8. a guide block; 9. a trigger block; 10. an adjusting block; 11. a compression spring; 16. a first gear; 17. an arcuate connection; 18. mounting blocks; 19. a first notch; 20. a first guide groove; 22. a mounting cavity; 23. a guide groove; 24. a first guide block; 25. a connecting plate; 26. a first rack; 33. a first rotating shaft; 36. a support bar; 37. installing a ring shell; 38. installing a U-shaped shell; 39. a roller; 40. a rotating shaft; 41. a first drive shaft; 42. a second drive shaft; 43. a limiting cylinder; 44. telescopic connection; 45. a drive plate; 46. a compression spring; 48. an arc-shaped friction plate; 49. an annular guide block; 50. a rotating groove; 51. a shaft hole; 52. an annular guide groove; 53. a friction plate avoidance groove; 54. a third drive shaft; 55. a first support shaft; 56. a first support; 57. a fourth drive shaft; 58. a second support; 59. mounting holes; 62. a telescopic outer sleeve; 63. a telescopic inner rod; 64. a drive spring; 65. a second rotating shaft; 66. a second rack; 67. a third rotating shaft; 68. a fourth rotating shaft; 69. a fifth rotating shaft; 70. a sixth rotating shaft; 71. a third rack; 72. a second gear; 73. a third gear; 74. a fourth gear; 75. a fourth rack; 77. a fifth gear; 78. a sixth gear; 79. a square hole; 80. a second guide groove; 81. a third guide groove; 82. a drive shaft hole; 83. avoiding the notch; 84. a second guide block; 85. a third guide block; 86. and a limiting spring.

Detailed Description

As shown in fig. 1 and 2, the self-locking sickbed comprises a trigger mechanism 1, a sickbed body 2 and a self-locking mechanism 3, wherein the trigger mechanism 1 is arranged on the upper side of a baffle at one end of the sickbed body 2; four self-locking mechanisms 3 are respectively arranged at four corners of the lower side surface of the sickbed body 2.

as shown in fig. 3, the triggering mechanism 1 includes a supporting block 4, a stop lever 5, a triggering mounting structure 6, a triggering driving rod 7, a guide block 8, a triggering block 9, an adjusting block 10, a compression spring 11, a first gear 16, a guide groove 23, a first guide groove 20, a mounting cavity 22, a first guide block 24, a connecting plate 25, a first rack 26, a first rotating shaft 33, a first notch 19, and a limiting spring 86, wherein as shown in fig. 8, a through guide groove 23 is formed at one end of the supporting block 4; as shown in fig. 1, two supporting blocks 4 are respectively arranged at two sides of the upper end of a baffle at one side of the sickbed body 2; the two stop rods 5 are uniformly arranged between the two supporting blocks 4 and are close to the bed board on the sickbed body 2; as shown in fig. 6, the trigger mounting structure 6 is composed of an arcuate connection 17 and two mounting blocks 18, wherein the two mounting blocks 18 are respectively mounted at two ends of the arcuate connection 17; as shown in fig. 3, the trigger mounting structure 6 is mounted at the upper ends of the two support blocks 4; and two mounting blocks 18 in the trigger mounting structure 6 are respectively positioned at two sides of the two supporting blocks 4; as shown in fig. 7, a mounting cavity 22 is formed on the inner side of one mounting block 18 of the two mounting blocks 18, a first notch 19 is formed on one side end surface of the mounting block 18 close to the corresponding support block 4, the first notch 19 is matched with a guide groove 23 on the corresponding support block 4, and two first guide grooves 20 are symmetrically formed on the upper and lower end surfaces of the mounting cavity 22 of the mounting block 18 close to the first notch 19; as shown in fig. 5, one end of the trigger block 9 has a slope; as shown in fig. 4, one end of the trigger driving rod 7 is provided with a guide block 8, and the other end of the trigger driving rod 7 is provided with a trigger block 9; the trigger driving rod 7 is arranged on the two supporting blocks 4 through the matching of the guide block 8 and the trigger block 9 with the guide grooves 23 on the two supporting blocks 4; as shown in fig. 4, a limiting spring 86 is respectively installed between two side surfaces of the guide block 8 and two side surfaces of the first guide groove 20 on the corresponding support block 4; a limiting spring 86 is respectively arranged between two side surfaces of the trigger block 9 and two side surfaces of the first guide groove 20 on the corresponding supporting block 4; as shown in fig. 9, the adjusting block 10 has a slope thereon; two first guide blocks 24 are symmetrically arranged on two sides of the adjusting block 10; as shown in fig. 5, the adjusting block 10 is mounted in the mounting cavity 22 of the corresponding mounting block 18 through the cooperation of the two first guide blocks 24 and the two first guide grooves 20 on the mounting block 18; the inclined plane on the adjusting block 10 is matched with the inclined plane on the trigger block 9; as shown in fig. 9, one end of the connecting plate 25 is mounted on the side of the adjusting block 10 having no end with a slope; the other end of the connecting plate 25 is provided with a first rack 26; a compression spring 11 is arranged between one side of the connecting plate 25, which is far away from the upper inclined plane of the adjusting block 10, and the corresponding side surface of the mounting cavity 22; as shown in fig. 5, one end of the first rotating shaft 33 is mounted on the upper end surface of the mounting cavity 22 on the corresponding mounting block 18; as shown in fig. 10, the first gear 16 is mounted on the first rotating shaft 33; the first gear 16 is engaged with the first rack 26.

As shown in fig. 11, the self-locking mechanism 3 includes a support rod 36, a mounting ring housing 37, a mounting U-shaped housing 38, a roller 39, a rotating shaft 40, a first transmission shaft 41, a second transmission shaft 42, a limit cylinder 43, a telescopic joint 44, a driving plate 45, an extrusion spring 46, an arc-shaped friction plate 48, an annular guide block 49, a rotating groove 50, a shaft hole 51, an annular guide groove 52, a friction plate avoiding groove 53, a third transmission shaft 54, a first support shaft 55, a first support 56, a fourth transmission shaft 57, a second support 58, a mounting hole 59, a second rotating shaft 65, a second rack 66, a third rotating shaft 67, a fourth rotating shaft 68, a fifth rotating shaft 69, a sixth rotating shaft 70, a third rack 71, a second gear 72, a third gear 73, a fourth gear 74, a fourth rack 75, a fifth gear 77, a sixth gear 78, a square hole 79, a second guide groove 80, a third guide groove 81, a driving shaft hole 82, a notch 83, an avoiding notch 83, a notch 83, A second guide block 84 and a third guide block 85, wherein, as shown in fig. 15, the lower end of the support rod 36 is provided with a rotating groove 50; four friction plate avoiding grooves 53 are formed on the inner circular surface of the upper side of the rotating groove 50; as shown in fig. 20, four friction plate avoiding grooves 53 are uniformly distributed in pairs one above another, and two friction plate avoiding grooves 53 in the same group are symmetrical to each other; the inner circular surface of the lower side of the rotating groove 50 is provided with a circular guide groove 52; a square hole 79 is formed on the outer circumferential surface of the support rod 36, and the square hole 79 is positioned on the upper side of the rotating groove 50; two second guide grooves 80 are symmetrically formed in the two side faces of the square hole 79; the side surface of the square hole 79 is provided with a third guide groove 81; and the third guide groove 81 is located at the lower side of the second guide groove 80 on the same side; as shown in fig. 1, the upper end of the support rod 36 is mounted on the lower end surface of the hospital bed body 2; as shown in fig. 21, the rotating shaft 40 has a shaft hole 51 passing through the center thereof; an annular guide block 49 is arranged on the outer circular surface of the rotating shaft 40; as shown in fig. 14, the rotating shaft 40 is mounted on the lower end of the support bar 36 by the engagement of the annular guide block 49 with the annular guide groove 52; as shown in fig. 24, the U-shaped groove of the mounting U-shaped housing 38 has two shaft holes 51 symmetrically therein; the two shaft holes 51 are communicated with the inner side of the mounting U-shaped shell 38; as shown in fig. 22, a mounting U-shaped housing 38 is mounted on the lower end of the rotating shaft 40; one end of the first support shaft 55 has a tapered tooth; one end of the first support shaft 55, which is not provided with the bevel teeth, is mounted in one 51 of the two shaft holes 51 on the mounting U-shaped shell 38; one end of the first supporting shaft 55 with the conical teeth penetrates through the other shaft hole 51 of the two shaft holes 51 on the mounting U-shaped shell 38 and is positioned inside the mounting U-shaped shell 38; as shown in fig. 23, the roller 39 is mounted on the first support shaft 55, and the roller 39 is located in a U-shaped groove on the mounting U-shaped housing 38; both ends of the fourth transmission shaft 57 are provided with bevel teeth; as shown in fig. 24, the fourth transmission shaft 57 is mounted inside the mounting U-shaped housing 38 through the second support 58; one end of the fourth transmission shaft 57 is meshed with the first support shaft 55 through bevel teeth; a third drive shaft 54 is mounted inside the mounting U-shaped housing 38 by a first support 56; one end of the third transmission shaft 54 is engaged with the other end of the fourth transmission shaft 57 through bevel teeth; one end of the second transmission shaft 42 has a bevel gear; the second transmission shaft 42 is installed in the shaft hole 51 on the rotating shaft 40; one end of the second transmission shaft 42 is meshed with the other end of the third transmission shaft 54 through bevel teeth; as shown in fig. 16, a limiting cylinder 43 is installed at the other end of the second transmission shaft 42, and the limiting cylinder 43 is located in the rotation groove 50; as shown in fig. 25, two relief notches 83 are symmetrically formed on the inner circumferential surface of the outer side of the mounting ring housing 37; four mounting holes 59 are formed in the inner circular surface on the outer side of the mounting ring shell 37, every two of the four mounting holes 59 are uniformly distributed up and down in a group, and the two mounting holes 59 in the same group are symmetrical; the mounting ring case 37 is mounted on the outer circumferential surface of the lower side of the support rod 36; two avoiding notches 83 on the mounting ring shell 37 are matched with the square hole 79 on the support rod 36; four mounting holes 59 on the mounting ring case 37 are matched with four friction plate avoiding grooves 53 on the support rod 36; as shown in fig. 13, one end of the second rotating shaft 65 is installed at the side of the hole 79 above the support bar 36; the fourth gear 74 is mounted on the second rotating shaft 65; as shown in fig. 18, two second guide blocks 84 are symmetrically installed on both sides of the fourth rack 75; the fourth rack 75 is installed in the square hole 79 of the support bar 36 through the matching of the two second guide blocks 84 and the two second guide grooves 80 of the support bar 36; as shown in fig. 17, the fourth rack 75 is engaged with the fourth gear 74; one end of the third rotating shaft 67 is mounted on the side surface of the upper hole 79 of the support bar 36; the third gear 73 is mounted on the third rotating shaft 67; the third gear 73 is engaged with the fourth rack 75; one end of the fifth rotating shaft 69 is installed at the side of the upper hole 79 of the support bar 36; a fifth gear 77 is mounted on the fifth rotating shaft 69; the fifth gear 77 cooperates with the fourth rack 75; the fifth gear 77 and the third gear 73 are respectively located at both sides of the fourth rack 75; one end of the fourth rotating shaft 68 is mounted on the side of the upper hole 79 of the support bar 36; the second gear 72 is mounted on the fourth shaft 68; the second gear 72 is located on the lower side of the third gear 73, and the second gear 72 is meshed with the third gear 73; one end of the sixth rotating shaft 70 is installed at the side of the upper hole 79 of the support bar 36; a sixth gear 78 is mounted on the sixth shaft 70; the sixth gear 78 is located on the lower side of the fifth gear 77, and the sixth gear 78 is meshed with the fifth gear 77; as shown in fig. 19, a third guide block 85 is installed at one side of the second rack 66; the second rack 66 is arranged in the square hole 79 of the support bar 36 through the matching of the third guide block 85 and the third guide groove 81 on the support bar 36; the second rack 66 is located on the lower side of the second gear 72 and the fifth gear 77, and the second rack 66 is engaged with the second gear 72 and the fifth gear 77, respectively.

the structure mounted at the lower end of the inner side of the mounting ring shell 37 is divided into two parts, the two parts mounted at the lower end of the inner side of the mounting ring shell 37 have the same structure and are symmetrical to each other, and for any one of the two parts, as shown in fig. 17, one side of a driving plate 45 is symmetrically provided with two telescopic connections 44; the driving plate 45 is mounted on the inner side of the mounting ring shell 37 through the matching of the two telescopic connections 44 and the corresponding two mounting holes 59 on the mounting ring shell 37; as shown in fig. 13, a pressing spring 46 is installed between the driving plate 45 and the inner circular surface of the mounting ring case 37; as shown in fig. 12, two arc-shaped friction plates 48 are respectively mounted on end faces of the two telescopic connections 44 on the side far from the driving plate 45; as shown in fig. 16, two arc-shaped friction plates 48 are engaged with corresponding two friction plate avoiding grooves 53 on the support bar 36; the two arc-shaped friction plates 48 are respectively matched with the limiting cylinder 43 and the rotating shaft 40; a third rack gear 71 is mounted on the upper end of the drive plate 45.

The two third racks 71 are engaged with the second gear 72 and the sixth gear 78, respectively.

The first rotating shaft 33 is connected with the second rotating shaft 65 through a flexible shaft.

As shown in fig. 26, the telescopic link 44 comprises a telescopic sheath 62, a telescopic inner rod 63, and a driving spring 64, wherein one end of the telescopic inner rod 63 is mounted on the driving plate 45; one end of the telescopic outer sleeve 62 is nested and arranged at the other end of the telescopic inner rod 63; a driving spring 64 is arranged between the telescopic inner rod 63 arranged at the inner side of the telescopic outer sleeve 62 and the inner end surface of the telescopic outer sleeve 62; the other end of the telescoping outer sleeve 62 mounts the arcuate friction plate 48.

the trigger block 9 and the adjusting block 10 are in a balanced state under the common elastic force of the two limit springs 86 and the compression spring 11 in the initial state.

The annular guide blocks 49 and the corresponding annular guide grooves 52 are mounted through bearings.

The limiting spring 86 is a compressible and stretchable spring; the function of the device is to play a role in returning the trigger driving rod 7.

In summary, the following steps:

The sickbed designed by the invention can control the locking state of the sickbed roller 39 by identifying the stress state of the push rod on the sickbed, thereby controlling the movement and the stop of the sickbed.

Two supporting blocks 4 are respectively arranged on two sides of the upper end of a baffle on one side of a sickbed body 2; the two stop rods 5 are uniformly arranged between the two supporting blocks 4 and are close to the bed board on the sickbed body 2; the trigger mounting structure 6 is mounted at the upper ends of the two supporting blocks 4; one end of the trigger block 9 is provided with an inclined plane; one end of the trigger driving rod 7 is provided with a guide block 8, and the other end of the trigger driving rod 7 is provided with a trigger block 9; the trigger driving rod 7 is arranged on the two supporting blocks 4 through the matching of the guide block 8 and the trigger block 9 with the guide grooves 23 on the two supporting blocks 4; the adjusting block 10 is provided with an inclined plane; the adjusting block 10 is installed in the installation cavity 22 on the corresponding installation block 18 through the matching of the two first guide blocks 24 and the two first guide grooves 20 on the installation block 18; a limiting spring 86 is respectively arranged between two side surfaces of the guide block 8 and two side surfaces of the first guide groove 20 on the corresponding support block 4; a limiting spring 86 is respectively arranged between two side surfaces of the trigger block 9 and two side surfaces of the first guide groove 20 on the corresponding supporting block 4; the inclined plane on the adjusting block 10 is matched with the inclined plane on the trigger block 9; one end of the connecting plate 25 is arranged on the adjusting block 10; the other end of the connecting plate 25 is provided with a first rack 26; a compression spring 11 is arranged between one side of the connecting plate 25, which is far away from the upper inclined plane of the adjusting block 10, and the corresponding side surface of the mounting cavity 22; one end of the first rotating shaft 33 is installed on the upper end face of the installation cavity 22 on the corresponding installation block 18; the first gear 16 is mounted on the first rotating shaft 33; the first gear 16 is engaged with the first rack 26; in the initial state, the trigger block 9 and the adjusting block 10 are in a balanced state under the common elastic force of the two corresponding limiting springs 86 and the compression spring 11. When the trigger driving rod 7 is pushed forwards, the trigger driving rod 7 drives the trigger block 9 to move forwards along the first guide groove 20 on the corresponding supporting block 4; the trigger block 9 moves forwards to push the adjusting block 10 to move forwards; the forward movement of the adjusting block 10 drives the connecting plate 25 to move forward; the connecting plate 25 moves forward to drive the first rack 26 to move forward; the forward movement of the first rack 26 causes the first gear 16 to rotate; the rotation of the first gear 16 will drive the rotation of the first rotating shaft 33; when the trigger driving rod 7 is pulled backwards, the trigger driving rod 7 drives the trigger block 9 to move backwards along the first guide groove 20 on the corresponding supporting block 4; during the backward movement of the trigger block 9, the adjusting block 10 moves backward under the action of the compression spring 11; the backward movement of the adjusting block 10 drives the connecting plate 25 to move backward; the connecting plate 25 moves backwards to drive the first rack 26 to move backwards; rearward movement of the first rack 26 causes the first gear 16 to rotate; the rotation of the first gear 16 will drive the rotation of the first rotating shaft 33; when the trigger driving rod 7 is pushed towards one side of the adjusting block 10, the trigger driving block drives the trigger block 9 to move towards one side provided with the adjusting block 10; the trigger block 9 moves towards the side where the adjusting block 10 is installed, so that the adjusting block 10 moves forwards under the matching of the first guide block 24 and the first guide groove 20; the forward movement of the adjusting block 10 drives the connecting plate 25 to move forward; the connecting plate 25 moves forward to drive the first rack 26 to move forward; the forward movement of the first rack 26 causes the first gear 16 to rotate; the rotation of the first gear 16 will drive the rotation of the first rotating shaft 33; when the trigger driving rod 7 is pulled by a side far away from the adjusting block 10, the trigger driving block drives the trigger block 9 to move towards the side far away from the side provided with the adjusting block 10; the trigger block 9 moves towards the side far away from the side where the adjusting block 10 is installed, so that the adjusting block 10 moves backwards under the cooperation of the first guide block 24 and the first guide groove 20; the backward movement of the adjusting block 10 drives the connecting plate 25 to move backward; the connecting plate 25 moves backwards to drive the first rack 26 to move backwards; rearward movement of the first rack 26 causes the first gear 16 to rotate; the rotation of the first gear 16 will drive the first rotation shaft 33 to rotate.

The mounting ring case 37 is mounted on the outer circumferential surface of the lower side of the support rod 36 in the present invention; one end of the second rotating shaft 65 is installed on the side surface of the upper hole 79 of the support rod 36; the fourth gear 74 is mounted on the second rotating shaft 65; two second guide blocks 84 are symmetrically installed on both sides of the fourth rack 75; the fourth rack 75 is installed in the square hole 79 of the support bar 36 through the matching of the two second guide blocks 84 and the two second guide grooves 80 of the support bar 36; the fourth rack 75 is engaged with the fourth gear 74; one end of the third rotating shaft 67 is mounted on the side surface of the upper hole 79 of the support bar 36; the third gear 73 is mounted on the third rotating shaft 67; the third gear 73 is engaged with the fourth rack 75; one end of the fifth rotating shaft 69 is installed at the side of the upper hole 79 of the support bar 36; a fifth gear 77 is mounted on the fifth rotating shaft 69; the fifth gear 77 cooperates with the fourth rack 75; the fifth gear 77 and the third gear 73 are respectively located at both sides of the fourth rack 75; one end of the fourth rotating shaft 68 is mounted on the side of the upper hole 79 of the support bar 36; the second gear 72 is mounted on the fourth shaft 68; the second gear 72 is located on the lower side of the third gear 73, and the second gear 72 is meshed with the third gear 73; one end of the sixth rotating shaft 70 is installed at the side of the upper hole 79 of the support bar 36; a sixth gear 78 is mounted on the sixth shaft 70; the sixth gear 78 is located on the lower side of the fifth gear 77, and the sixth gear 78 is meshed with the fifth gear 77; a third guide block 85 is installed at one side of the second rack 66; the second rack 66 is arranged in the square hole 79 of the support bar 36 through the matching of the third guide block 85 and the third guide groove 81 on the support bar 36; the second rack 66 is located on the lower side of the second gear 72 and the fifth gear 77, and the second rack 66 is meshed with the second gear 72 and the fifth gear 77, respectively; the first rotating shaft 33 is connected with the second rotating shaft 65 through a flexible shaft; the two third racks 71 are respectively meshed with the second gear 72 and the sixth gear 78; when the first rotating shaft 33 rotates, the first rotating shaft 33 drives the second rotating shaft 65 to rotate; the second rotating shaft 65 rotates to drive the fourth gear 74 to rotate; rotation of the fourth gear 74 causes the fourth rack 75 to move; when the fourth rack 75 is engaged with the fifth gear 77 during the movement of the fourth rack 75, the fourth rack 75 moves to drive the fifth gear 77 to rotate; the fifth gear 77 rotates to drive the sixth gear 78 to rotate; the rotation of the sixth gear 78 causes the corresponding third rack 71 to move toward the side away from the sixth gear 78; while the fifth gear 77 causes the second rack 66 to move when the fifth gear 77 rotates; the second gear 72 is driven to rotate by the movement of the second rack 66; the second gear 72 rotates to drive the corresponding third rack 71 to move towards the side far away from the second gear 72; when the fourth rack 75 is engaged with the third gear 73 during the movement of the fourth rack 75, the fourth rack 75 moves to drive the third gear 73 to rotate; the third gear 73 rotates to drive the second gear 72 to rotate; the second gear 72 rotates to move the corresponding third rack 71 toward the side away from the second gear 72; while the fifth gear 77 causes the second rack 66 to move when the second gear 72 rotates; the movement of the second rack 66 drives the sixth gear 78 to rotate; the rotation of the sixth gear 78 will move the corresponding third rack 71 toward the side away from the sixth gear 78.

The structure installed at the lower end of the inner side of the installation ring shell 37 is divided into two parts, the two parts installed at the lower end of the inner side of the installation ring shell 37 have the same structure and are mutually symmetrical, and for any one part, one side of a driving plate 45 is symmetrically provided with two telescopic connections 44; the driving plate 45 is mounted on the inner side of the mounting ring shell 37 through the matching of the two telescopic connections 44 and the corresponding two mounting holes 59 on the mounting ring shell 37; an extrusion spring 46 is arranged between the driving plate 45 and the inner circular surface of the mounting ring shell 37; the two arc-shaped friction plates 48 are respectively arranged on the end surfaces of the two telescopic connections 44 far away from one side of the driving plate 45; the two arc-shaped friction plates 48 are matched with the two corresponding friction plate avoiding grooves 53 on the support rod 36; the two arc-shaped friction plates 48 are respectively matched with the limiting cylinder 43 and the rotating shaft 40; the third rack 71 is mounted on the upper end of the driving plate 45; when the third rack 71 moves towards the side far away from the limiting cylinder 43, the third rack 71 drives the corresponding driving plate 45 to move towards the side far away from the limiting cylinder 43; the driving plate 45 moves to drive the telescopic inner rod 63 in the corresponding two telescopic connections 44 to move towards one side far away from the limiting cylinder 43; the movement of the two telescopic link inner rods 63 to the side away from the stopper cylinder 43 will cause the two arc-shaped friction plates 48 to lose their pressing action of the corresponding drive springs 64.

The upper end of the supporting rod 36 is arranged on the lower side end face of the sickbed body 2; the rotating shaft 40 is arranged at the lower end of the supporting rod 36 through the matching of the annular guide block 49 and the annular guide groove 52; the mounting U-shaped housing 38 is mounted on the lower end of the rotating shaft 40; one end of the first support shaft 55 has a tapered tooth; one end of the first support shaft 55, which is not provided with the bevel teeth, is mounted in one 51 of the two shaft holes 51 on the mounting U-shaped shell 38; one end of the first supporting shaft 55 with the conical teeth penetrates through the other shaft hole 51 of the two shaft holes 51 on the mounting U-shaped shell 38 and is positioned inside the mounting U-shaped shell 38; the roller 39 is mounted on the first support shaft 55, and the roller 39 is positioned in a U-shaped groove on the mounting U-shaped housing 38; both ends of the fourth transmission shaft 57 are provided with bevel teeth; the fourth transmission shaft 57 is mounted inside the mounting U-shaped housing 38 through a second support 58; one end of the fourth transmission shaft 57 is meshed with the first support shaft 55 through bevel teeth; a third drive shaft 54 is mounted inside the mounting U-shaped housing 38 by a first support 56; one end of the third transmission shaft 54 is engaged with the other end of the fourth transmission shaft 57 through bevel teeth; one end of the second transmission shaft 42 has a bevel gear; the second transmission shaft 42 is installed in the shaft hole 51 on the rotating shaft 40; one end of the second transmission shaft 42 is meshed with the other end of the third transmission shaft 54 through bevel teeth; the limiting cylinder 43 is arranged at the other end of the second transmission shaft 42, and the limiting cylinder 43 is positioned in the rotating groove 50; when the roller 39 rotates, the roller 39 drives the first supporting shaft 55 to rotate; the first supporting shaft 55 rotates to drive the fourth transmission shaft 57 to rotate; the fourth transmission shaft 57 rotates to drive the third transmission shaft 54 to rotate; the third transmission shaft 54 rotates to drive the second transmission shaft 42 to rotate; the second transmission shaft 42 rotates to drive the limiting cylinder 43 to rotate; during the rolling of the roller 39, if the rotation direction of the roller 39 is changed, the roller 39 will drive the mounting U-shaped housing 38 and the rotating shaft 40 to rotate around the axis of the rotating shaft 40.

The specific implementation mode is as follows: when people use the sickbed designed by the invention, no matter the user pushes forwards, pulls backwards or pulls obliquely or pushes the trigger driving rod 7, the first rotating shaft 33 can be rotated by the movement of the driving rod; when the first rotating shaft 33 rotates, the first rotating shaft 33 drives the second rotating shaft 65 to rotate; the second rotating shaft 65 rotates to drive the fourth gear 74 to rotate; rotation of the fourth gear 74 causes the fourth rack 75 to move; when the fourth rack 75 is engaged with the fifth gear 77 during the movement of the fourth rack 75, the fourth rack 75 moves to drive the fifth gear 77 to rotate; the fifth gear 77 rotates to drive the sixth gear 78 to rotate; the rotation of the sixth gear 78 causes the corresponding third rack 71 to move toward the side away from the sixth gear 78; while the fifth gear 77 causes the second rack 66 to move when the fifth gear 77 rotates; the second gear 72 is driven to rotate by the movement of the second rack 66; the second gear 72 rotates to drive the corresponding third rack 71 to move towards the side far away from the second gear 72; when the fourth rack 75 is engaged with the third gear 73 during the movement of the fourth rack 75, the fourth rack 75 moves to drive the third gear 73 to rotate; the third gear 73 rotates to drive the second gear 72 to rotate; the second gear 72 rotates to move the corresponding third rack 71 toward the side away from the second gear 72; while the fifth gear 77 causes the second rack 66 to move when the second gear 72 rotates; the movement of the second rack 66 drives the sixth gear 78 to rotate; the rotation of the sixth gear 78 will move the corresponding third rack 71 toward the side away from the sixth gear 78. When the third rack 71 moves towards the side far away from the limiting cylinder 43, the third rack 71 drives the corresponding driving plate 45 to move towards the side far away from the limiting cylinder 43; the driving plate 45 moves to drive the telescopic inner rod 63 in the corresponding two telescopic connections 44 to move towards one side far away from the limiting cylinder 43; the movement of the two telescopic link inner rods 63 to the side away from the stopper cylinder 43 will cause the two arc-shaped friction plates 48 to lose their pressing action of the corresponding drive springs 64. At this time, the four arc friction plates 48 lose the binding of the limiting cylinder 43 and the rotating shaft 40; that is, the rotating shaft 40 and the second transmission shaft 42 can freely rotate; i.e. the roller 39 can rotate freely; namely, the sickbed can be normally used. When the user wants to stop the sickbed, the driving of the trigger driving rod 7 is stopped at the moment, and the trigger driving rod 7 is restored to the original position under the combined action of the corresponding compression spring 11 and the limiting spring 86; namely, the adjusting block 10 is restored to the original position; that is, the corresponding third rack 71 is restored to the original position; at this time, under the action of the corresponding extrusion spring 46, the corresponding arc-shaped friction plate 48 plays a role in limiting the corresponding limiting cylinder 43 and the rotating shaft 40; so that the rotating shaft 40 and the second transmission shaft 42 lose the rotating function; i.e. the roller 39 loses its rotation function; i.e. the patient bed is at rest at this time.

Claims

1. The utility model provides a sick bed is used in medical treatment based on two-way auto-lock which characterized in that: the sickbed comprises a trigger mechanism, a sickbed body and a self-locking mechanism, wherein the trigger mechanism is arranged on the upper side of a baffle at one end of the sickbed body; the four self-locking mechanisms are respectively arranged at four corners of the lower side surface of the sickbed body;

The trigger mechanism comprises a supporting block, a stop lever, a trigger mounting structure, a trigger driving rod, a guide block, a trigger block, an adjusting block, a compression spring, a first gear, a guide groove, a first guide groove, a mounting cavity, a first guide block, a connecting plate, a first rack, a first rotating shaft, a first notch and a limiting spring, wherein one end of the supporting block is provided with a through guide groove; the two supporting blocks are respectively arranged on two sides of the upper end of a baffle plate on one side of the sickbed body; the two stop rods are uniformly arranged between the two supporting blocks and are close to the bed plate on the sickbed body; the trigger mounting structure consists of an arched connection and two mounting blocks, wherein the two mounting blocks are respectively mounted at two ends of the arched connection; the trigger mounting structure is mounted at the upper ends of the two supporting blocks; two mounting blocks in the trigger mounting structure are respectively positioned at two sides of the two supporting blocks; the inner side of one of the two mounting blocks is provided with a mounting cavity, the end surface of one side of the mounting block, which is close to the corresponding supporting block, is provided with a first notch, the first notch is matched with the guide groove on the corresponding supporting block, and the upper end surface and the lower end surface of one side of the mounting cavity, which is close to the first notch, in the mounting block are symmetrically provided with two first guide grooves; one end of the trigger block is provided with an inclined plane; one end of the trigger driving rod is provided with a guide block, and the other end of the trigger driving rod is provided with a trigger block; the trigger driving rod is arranged on the two supporting blocks through the matching of the guide block and the trigger block with the guide grooves on the two supporting blocks; a limiting spring is respectively arranged between the two side surfaces of the guide block and the two side surfaces of the first guide groove on the corresponding support block; a limiting spring is respectively arranged between two side surfaces of the trigger block and two side surfaces of the first guide groove on the corresponding supporting block; the adjusting block is provided with an inclined plane; two first guide blocks are symmetrically arranged on two sides of the adjusting block; the adjusting block is arranged in the mounting cavity on the corresponding mounting block through the matching of the two first guide blocks and the two first guide grooves on the mounting block; the inclined plane on the adjusting block is matched with the inclined plane on the triggering block; one end of the connecting plate is arranged on the side surface of the adjusting block which is not provided with the inclined surface; the other end of the connecting plate is provided with a first rack; a compression spring is arranged between one side of the connecting plate, which is far away from the upper inclined plane of the adjusting block, and the corresponding side surface of the mounting cavity; one end of the first rotating shaft is arranged on the upper end surface of the mounting cavity on the corresponding mounting block; the first gear is arranged on the first rotating shaft; the first gear is meshed with the first rack;

The self-locking mechanism comprises a supporting rod, an installation ring shell, an installation U-shaped shell, a roller, a rotating shaft, a first transmission shaft, a second transmission shaft, a limiting cylinder, a telescopic connection, a driving plate, an extrusion spring, an arc friction plate, an annular guide block, a rotating groove, a shaft hole, an annular guide groove, a friction plate avoiding groove, a third transmission shaft, a first supporting shaft, a first support, a fourth transmission shaft, a second support, an installation hole, a second rotating shaft, a second rack, a third rotating shaft, a fourth rotating shaft, a fifth rotating shaft, a sixth rotating shaft, a third rack, a second gear, a third gear, a fourth rack, a fifth gear, a sixth gear, a square hole, a second guide groove, a third guide groove, a driving shaft hole, an avoiding notch, a second guide block and a third guide block, wherein the lower end of the supporting rod is provided with the rotating groove; four friction plate avoiding grooves are formed in the inner circular surface on the upper side of the rotating groove; every two of the four friction plate avoiding grooves are uniformly distributed from top to bottom in a group, and the two friction plate avoiding grooves in the same group are mutually symmetrical; the inner circle surface at the lower side of the rotating groove is provided with an annular guide groove; a square hole is formed in the outer circular surface of the supporting rod and is positioned on the upper side of the rotating groove; two second guide grooves are symmetrically formed in the two side faces of the square hole; a third guide groove is formed in the side face of the square hole; and the third guide groove is positioned at the lower side of the second guide groove on the same side surface; the upper end of the supporting rod is arranged on the end surface of the lower side of the sickbed body; the center of the rotating shaft is provided with a through shaft hole; the outer circular surface of the rotating shaft is provided with an annular guide block; the rotating shaft is arranged at the lower end of the supporting rod through the matching of the annular guide block and the annular guide groove; two shaft holes are symmetrically arranged in the U-shaped groove for installing the U-shaped shell; the two shaft holes are communicated with the inner side of the mounting U-shaped shell; the mounting U-shaped shell is mounted at the lower end of the rotating shaft; one end of the first supporting shaft is provided with a bevel gear; one end of the first supporting shaft, which is not provided with the bevel gear, is arranged in one of the two shaft holes on the installation U-shaped shell; one end of the first supporting shaft with the bevel gear penetrates through the other shaft hole of the two shaft holes on the mounting U-shaped shell and is positioned on the inner side of the mounting U-shaped shell; the roller is arranged on the first supporting shaft and is positioned in a U-shaped groove on the U-shaped shell; both ends of the fourth transmission shaft are provided with bevel teeth; the fourth transmission shaft is arranged on the inner side of the mounting U-shaped shell through a second support; one end of the fourth transmission shaft is meshed with the first support shaft through bevel teeth; the third transmission shaft is arranged on the inner side of the mounting U-shaped shell through a first support; one end of the third transmission shaft is meshed with the other end of the fourth transmission shaft through bevel teeth; one end of the second transmission shaft is provided with bevel teeth; the second transmission shaft is arranged in the shaft hole on the rotating shaft; one end of the second transmission shaft is meshed with the other end of the third transmission shaft through bevel teeth; the limiting cylinder is arranged at the other end of the second transmission shaft and is positioned in the rotating groove; two avoidance notches are symmetrically formed in the inner circular surface on the outer side of the mounting ring shell; four mounting holes are formed in the inner circle surface on the outer side of the mounting ring shell, every two of the four mounting holes are uniformly distributed up and down in a group, and the two mounting holes in the same group are mutually symmetrical; the mounting ring shell is mounted on the outer circular surface of the lower side of the supporting rod; two avoiding gaps on the mounting ring shell are matched with the square hole on the supporting rod; four mounting holes on the mounting ring shell are matched with four friction plate avoiding grooves on the supporting rod; one end of the second rotating shaft is arranged on the side surface of the hole above the supporting rod; the fourth gear is arranged on the second rotating shaft; two second guide blocks are symmetrically arranged on two sides of the fourth rack; the fourth rack is arranged in a square hole on the supporting rod through the matching of the two second guide blocks and the two second guide grooves on the supporting rod; the fourth rack is meshed with the fourth gear; one end of the third rotating shaft is arranged on the side surface of the hole above the supporting rod; the third gear is arranged on the third rotating shaft; the third gear is matched with the fourth rack; one end of the fifth rotating shaft is arranged on the side surface of the hole above the supporting rod; the fifth gear is arranged on the fifth rotating shaft; the fifth gear is matched with the fourth rack; the fifth gear and the third gear are respectively positioned at two sides of the fourth rack; one end of the fourth rotating shaft is arranged on the side surface of the hole above the supporting rod; the second gear is arranged on the fourth rotating shaft; the second gear is positioned at the lower side of the third gear and is meshed with the third gear; one end of the sixth rotating shaft is arranged on the side surface of the hole above the supporting rod; the sixth gear is arranged on the sixth rotating shaft; the sixth gear is positioned at the lower side of the fifth gear, and the sixth gear is meshed with the fifth gear; a third guide block is arranged on one side of the second rack; the second rack is arranged in a square hole on the supporting rod through the matching of a third guide block and a third guide groove on the supporting rod; the second rack is positioned at the lower sides of the second gear and the fifth gear and is respectively meshed with the second gear and the fifth gear;

the structure installed at the lower end of the inner side of the installation ring shell is divided into two parts, the two parts installed at the lower end of the inner side of the installation ring shell are completely identical in structure and are mutually symmetrical, and for any one part, two telescopic connections are symmetrically installed on one side of the drive plate; the driving plate is installed on the inner side of the installation ring shell in a matching way with the two corresponding installation holes on the installation ring shell through two telescopic connections; an extrusion spring is arranged between the driving plate and the inner circular surface of the mounting ring shell; the two arc-shaped friction plates are respectively arranged on the end surfaces of the two telescopic connectors which are far away from one side of the driving plate; the two arc-shaped friction plates are matched with the two corresponding friction plate avoiding grooves on the supporting rod; the two arc-shaped friction plates are respectively matched with the limiting cylinder and the rotating shaft; the third rack is arranged at the upper end of the driving plate;

The two third racks are respectively meshed with the second gear and the sixth gear;

2. The medical sickbed based on the bidirectional self-locking as set forth in claim 1, wherein: the telescopic connection comprises a telescopic outer sleeve, a telescopic inner rod and a driving spring, wherein one end of the telescopic inner rod is arranged on the driving plate; one end of the telescopic outer sleeve is nested and arranged at the other end of the telescopic inner rod; a driving spring is arranged between the telescopic inner rod arranged at the inner side of the telescopic outer sleeve and the inner end surface of the telescopic outer sleeve; the other end of the telescopic outer sleeve is provided with an arc-shaped friction plate.

3. The medical sickbed based on the bidirectional self-locking as set forth in claim 1, wherein: in the initial state, the trigger block and the adjusting block are in a balanced state under the common elasticity of the two corresponding limiting springs and the compression spring.

4. The medical sickbed based on the bidirectional self-locking as set forth in claim 1, wherein: the annular guide blocks and the corresponding annular guide grooves are mounted through bearings.

5. The medical sickbed based on the bidirectional self-locking as set forth in claim 1, wherein: the limiting spring is a compressible and stretchable spring.