CN113217785A

CN113217785A - Self-adaptive balance base and adjusting method

Info

Publication number: CN113217785A
Application number: CN202110321940.0A
Authority: CN
Inventors: 肖建如; 曾建军; 田志杰; 矫健; 张成杰; 周振华; 吕天宇; 黄润波; 陈太忠; 刘鹏程
Original assignee: Shanghai Jiaao Information Technology Development Co ltd
Current assignee: Shanghai Jiaao Information Technology Development Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-08-06

Abstract

The invention provides a self-adaptive balance base and an adjusting method, wherein the self-adaptive balance base comprises a support frame, the bottom of the support frame is provided with a first support assembly, and the first support assembly comprises an inner shaft, an outer shaft, an elastic part, a limiting part and a driving part; the outer axle is vertical to be worn to establish the bottom of support frame and rather than the cooperation of sliding, and the coaxial outer axle of embedding of interior axle is inside and rather than the cooperation of sliding, and the elastic component sets up between interior axle and outer axle, and the flexible direction of elastic component is on a parallel with the axial of outer axle, and the locating part is installed and is restricted interior axle and outer relative position of axle between axle and outer axle, driving piece fixed mounting on the support frame, and the driving piece is used for driving interior axle and is elevating movement along vertical direction. The inner shaft and the outer shaft move downwards simultaneously until the outer shaft is contacted with the ground, then the inner shaft continues to move downwards under the action of the driving piece, and the values of F < 1/3G, | F-1/4G | are made as small as possible, so that the supporting frame is stably supported, the structure is simple, the requirement on the precision of the driving piece is not high, and the cost is saved.

Description

Self-adaptive balance base and adjusting method

Technical Field

The invention relates to the technical field of equipment support, in particular to a self-adaptive balance base and an adjusting method.

Background

Many medical carts or other devices require a base to be firmly supported on the ground while the device is in operation. The existing equipment base mostly adopts a supporting mode that a locking mechanism provided with four casters at the bottom locks each caster to serve as a supporting leg or an independent telescopic supporting leg is arranged near the four casters.

However, the problem that the rigidity of the caster is insufficient or the caster itself has a floating gap to cause unstable support between the base and the ground exists when the locked caster is used as the supporting leg of the base, and meanwhile, the two methods cannot solve the problem that the fit between the supporting legs and the ground is not good due to uneven ground.

The existing chinese patent publication No. CN106885102A discloses a self-adaptive balance base and a self-adaptive balance adjusting method, which includes a support plate, a support structure and a controller; the top of the supporting plate is provided with a groove for fixing the medical working table, the groove is internally provided with a plurality of connecting grooves and/or connecting holes for inserting and fixing the medical working table, and the bottom of the supporting plate is fixedly connected with more than one supporting structure; the four corners of the bottom of the supporting plate are respectively fixedly connected with a roller, and each roller is provided with a locking device. Because the invention is provided with a plurality of supporting structures, each supporting structure is compressed by the reset spring to ensure that the corresponding first inner bearing body triggers the upper limit switch, so that the controller sends a signal to control the electric push rod to adjust.

The inventor thinks that the driving motors driving each supporting structure in the prior art need to be controlled independently and require that the displacements driven by four driving motors are consistent, so that the control of the electric appliance is more complex, the requirement on the precision of the motors is higher, and the improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a self-adaptive balance base and an adjusting method.

The self-adaptive balance base comprises a support frame, wherein a first support assembly is arranged at the bottom of the support frame and comprises an inner shaft, an outer shaft, an elastic part, a limiting part and a driving part; the outer axle vertically wears to establish the bottom of support frame and rather than the cooperation of sliding, interior axle from the top down coaxial embedding outer axle inside and rather than the cooperation of sliding, the elastic component sets up between interior axle and outer axle, just the flexible direction of elastic component is on a parallel with the axial of outer axle, the locating part is installed between interior axle and outer axle and is restricted interior axle and outer relative position of axle, driving piece fixed mounting is on the support frame, just the driving piece is used for driving interior axle and is elevating movement along vertical direction.

Preferably, the elastic component includes the pressure spring, interior outer axle outside and outer epaxial side all are formed with the ladder face that is used for installing the pressure spring, just the bottom of outer axle still is formed with dodges the space, the outside at interior axle is established to the pressure spring cover, just the ladder face in the interior axle outside is supported tightly to the upper end of pressure spring, the lower extreme of pressure spring supports tightly the ladder face of outer inboard axle.

Preferably, the limiting part comprises a limiting pin, the limiting pin is fixedly mounted on the inner shaft, a limiting waist hole is formed in the outer shaft, and the limiting pin is embedded in the limiting waist hole.

Preferably, the elastic force of the elastic member is F, the total weight of the lifted supporting frame is G, the elastic force F of the elastic member is less than one third of the total weight of the lifted supporting frame G, and the value of | F-1/4G | is as small as possible.

Preferably, the bottom of support frame still is provided with the second and supports the assemblage, the second supports the assemblage and includes back shaft and driving piece, the back shaft is vertical to be worn to establish the bottom of support frame and rather than the cooperation of sliding, driving piece fixed mounting is on the supporting seat, just driving piece drive back shaft is elevating movement in vertical direction.

Preferably, be provided with spacing sensor and lower spacing sensor on the support frame, all be provided with the response piece on first support assemblage and the second support assemblage, when the response piece triggered spacing sensor or lower spacing sensor, spacing sensor is with signal transmission to the controller on the support frame down to last spacing sensor or lower spacing sensor, the controller control on the support frame is all driving piece stop motion together.

Preferably, the downside of support frame bottom is provided with the axle sleeve, the axle sleeve all is relative setting with first support assemblage and second support assemblage, arbitrary the outer axle all wears to establish relative axle sleeve rather than the cooperation of sliding, and arbitrary the back shaft all wears to establish relative axle sleeve rather than the cooperation of sliding.

Preferably, the first support assemblage is provided with a set on the support frame, the second support assemblage is provided with three sets on the support frame, and a set of the first support assemblage and the three sets of the second support assemblage are arranged in a rectangular shape at the bottom of the support frame.

Preferably, be provided with the locking device on the support frame, the locking device is relative setting with first support assemblage, just when first support assemblage is in the supported state, the locking device is with outer axle locking tightly.

The invention provides an adjusting method of a self-adaptive balance base, which comprises the following steps: s1, starting a controller on the supporting frame, wherein the controller simultaneously controls four driving pieces to respectively drive a first supporting assembly and three groups of second supporting assemblies to move downwards until the controller receives a signal of a lower limit sensor triggered by the induction block, and the controller simultaneously controls the four driving pieces to stop moving and controls the locking device to lock an outer shaft; s2, when the supporting frame is to be lowered, the controller sends an instruction, the locking device loosens the outer shaft, then four driving pieces respectively drive the first supporting assembly and the three groups of second supporting assemblies to move upwards, and the controller receives a signal of the limiting sensor triggered by the induction block, and the controller stops moving four driving pieces simultaneously.

Compared with the prior art, the invention has the following beneficial effects:

1. the first support assembly and the second support assembly support the support frame, the inner shaft and the outer shaft simultaneously move downwards until the outer shaft is contacted with the ground by means of the elasticity of the elastic part on the first support assembly and the matching of the limiting part, then the inner shaft continues to move downwards under the action of the driving part, and the value of F is less than 1/3G and F-1/4G is as small as possible, so that the support frame is stably supported, the structure is simple, the precision requirement on the driving part is not high, and the cost is saved;

2. the outer shaft is tightly locked through the locking device, so that the first support assembly and the second support assembly are ensured to have the same rigidity, and the stability of the first support assembly and the second support assembly for supporting the support frame is improved;

3. the invention reduces the occurrence of the situation that three first support assemblies or second support assemblies are grounded in the process of lifting the base under the condition of uneven ground by meeting the condition that the elastic force F of the pressure spring is less than 1/3G and the value of | F-1/4G | is as small as possible, and is helpful for ensuring that the outer shaft has enough pressure on the ground.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the overall structure of a balance base according to the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the balance base according to the present invention;

fig. 3 is a schematic cross-sectional view of an overall structure of a first support assembly according to the present invention.

The figures show that:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1, the self-adaptive balance base provided by the invention comprises a support frame 19, wherein the bottom of the support frame 19 is provided with four casters 2, the four casters 2 are arranged at the bottom of the support frame 19, and the four casters 2 are arranged at the bottom of the support frame 19 in a rectangular shape. The support frame 19 is also provided with a first support assembly 6 and a second support assembly 5 for raising and lowering the support frame 19.

As shown in fig. 1, the supporting frame 19 includes a bottom plate 1, a fixing plate 4 and a connecting plate 3, the bottom plate 1 and the fixing plate 4 are horizontally spaced, the connecting plate 3 is vertically disposed, the connecting plate 3 is oppositely disposed between the bottom plate 1 and the fixing plate 4, and the bottom plate 1 and the fixing plate 4 are connected into a whole under the combined action of the two connecting plates 3.

As shown in fig. 2 and 3, the first support assembly 6 includes an inner shaft 10, an outer shaft 12, an elastic member, a limiting member, and a driving member. The outer shaft 12 vertically penetrates through the bottom plate 1 and is in sliding fit with the bottom plate, and the inner shaft 10 is coaxially embedded into the outer shaft 12 from top to bottom and is in sliding fit with the outer shaft. Stepped surfaces for installing elastic parts are formed in the outer side of the inner shaft 10 and the inner side of the outer shaft 12 respectively, the elastic parts are compression springs 13, the compression springs 13 and the shaft sleeve 7 are arranged on the outer side of the inner shaft 10, the upper ends of the compression springs 13 abut against the stepped surfaces on the outer side of the inner shaft 10, and the lower ends of the compression springs 13 abut against the stepped surfaces on the inner side of the outer shaft 12, so that the movement stability of the compression springs 13 is improved. An avoidance space for avoiding the inner shaft 10 is further opened at the bottom of the outer shaft 12.

The limiting part is a limiting pin 17, the limiting pin 17 is fixedly installed on the upper side of the inner shaft 10, a limiting waist hole 18 is formed in the corresponding position inside the outer shaft 12, and the limiting pin 17 is embedded in the limiting waist hole 18. Under the normal state, the limit pin 17 presses the upper side wall of the limit waist hole 18 under the action of the pressure spring 13.

The driving piece is electric putter 8, and electric putter 8 fixed mounting is on fixed plate 4, and electric putter 8 is vertical setting, and electric putter 8's tip and the coaxial fixed connection of interior axle 10. The movement of the electric push rod 8 is regulated by a controller mounted on the support frame 19.

The elastic force of the pressure spring 13 is F, the total weight of the lifted support frame 19 is G, F is preset to be less than 1/3G, and the value of | F-1/4G | is as small as possible, when the controller controls the electric push rod 8 to move downwards, the electric push rod 8 pushes the inner shaft 10 to move downwards, and the outer shaft 12 moves downwards along with the inner shaft 10 under the elastic force of the pressure spring 13 until the outer shaft 12 is in contact with the ground. After the outer shaft 12 contacts with the ground, the electric push rod 8 continues to push the inner shaft 10 to move downwards, so that the pressure spring 13 is in a certain compression state, and at the moment, the limiting pin 17 is separated from the upper side wall of the limiting waist hole 18 and is in a floating state.

The second support assembly 5 comprises an electric push rod 8 and a support shaft 14, the support shaft 14 vertically penetrates through the bottom plate 1 and is matched with the bottom plate in a sliding mode, and the electric push rod 8 is coaxially and fixedly connected with the support shaft 14 and drives the support shaft 14 to do lifting motion in the vertical direction. One group of first support assembly 6 is arranged on the support frame 19, three groups of second support assembly 5 are arranged on the support frame 19, and the arrangement of the first support assembly 6 and the three groups of second support assemblies 5 on the support frame 19 is rectangular.

As shown in fig. 1, 2 and 3, an upper limit sensor 16 and a lower limit sensor 15 are fixedly mounted on the connecting plate 3 far away from the first support assembly 6, the upper limit sensor 16 and the lower limit sensor 15 are arranged at intervals, and the upper limit sensor 16 is positioned above the lower limit sensor 15. The upper sides of the inner shaft 10 and the three support shafts 14 are fixedly provided with induction blocks 9, when the induction blocks 9 trigger the upper limit sensor 16 or the lower limit sensor 15, the upper limit sensor 16 or the lower limit sensor 15 sends signals to the controller, and the controller controls the four electric push rods 8 to move simultaneously.

The downside fixed mounting of bottom plate 1 has axle sleeve 7, and axle sleeve 7 all is relative setting with first support assemblage 6 and second support assemblage 5, and outer axle 12 and three back shaft 14 are equallyd divide and are vertically worn to establish axle sleeve 7 that corresponds with it and rather than the cooperation of sliding. The stability of the movement of the outer shaft 12 and the support shaft 14 is improved by the guiding action of the bushing 7.

The upper side of the bottom plate 1 is fixedly provided with a locking device 11, the locking device 11 is an electric locking device or a pure mechanical locking device, the work of the locking device 11 is regulated and controlled by a controller, and the locking device 11 and the outer shaft 12 are correspondingly arranged. When the first support assembly 6 is in the supporting state, the locking means 11 locks the outer shaft 12 tightly. After the locking device 11 locks the outer shaft 12, the first support assembly 6 and the second support assembly 5 have the same rigidity, and the feet of the outer shaft 12 and the three support shafts 14 can be similar to an absolute rigid body and are attached to the ground, so that the stability of the support seat relative to the ground is ensured.

The invention provides an adjusting method of a self-adaptive balance base, which comprises the following steps: the method comprises the following steps:

s1, when the supporting frame 19 needs to be supported, starting a controller, controlling the four electric push rods 8 to respectively drive the inner shaft 10 and the three groups of supporting shafts 14 to move downwards by the controller at the same time until the controller receives a signal of triggering the lower limit sensor 15 by the sensing block 9, and controlling the four electric push rods 8 to stop moving and the locking device 11 to lock the outer shaft 12 at the same time;

in the downward movement process of the first support assembly 6, before the outer shaft 12 is contacted with the ground, the outer shaft 12 and the inner shaft 10 are jointed with the upper end of the limiting hole by the elastic force of the pressure spring 13, so that the limiting effect on the outer shaft 12 is achieved, and the outer shaft 12 and the inner shaft 10 move downward together; after the outer shaft 12 contacts with the ground, the pressure spring 13 is under the action of pressure and is in a compressed state, and at the moment, the outer shaft 12 is pressed on the ground under the action of the elastic force of the pressure spring 13.

S2, when the supporting frame 19 needs to be lowered, the controller sends an instruction, the locking device 11 releases the outer shaft 12, then the four electric push rods 8 respectively drive the inner shaft 10, the outer shaft 12 and the three groups of supporting shafts 14 to move upwards until the controller receives a signal that the induction block 9 triggers the upper limit sensor 16, and the controller simultaneously controls the four electric push rods 8 to stop moving.

Principle of operation

In the work, when the supporting frame 19 needs to be supported, the controller is started, the controller simultaneously controls the four electric push rods 8 to respectively drive the inner shaft 10 and the three groups of supporting shafts 14 to move downwards until the controller receives a signal that the induction block 9 triggers the lower limit sensor 15, and then the controller simultaneously controls the four electric push rods 8 to stop moving and controls the locking device 11 to lock the outer shaft 12 tightly; when the supporting frame 19 needs to be lowered, the controller sends an instruction, the locking device 11 releases the outer shaft 12, then the four electric push rods 8 respectively drive the inner shaft 10, the outer shaft 12 and the three groups of supporting shafts 14 to move upwards until the controller receives a signal that the induction block 9 triggers the upper limit sensor 16, and the controller simultaneously controls the four electric push rods 8 to stop moving. The structure is simple, the precision requirement on the electric push rod 8 is not high, and the cost is saved.

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

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The self-adaptive balance base is characterized by comprising a support frame (19), wherein a first support assembly (6) is arranged at the bottom of the support frame (19), and the first support assembly (6) comprises an inner shaft (10), an outer shaft (12), an elastic part, a limiting part and a driving part;

outer axle (12) are vertical to be worn to establish the bottom of support frame (19) and rather than the cooperation of sliding, interior axle (10) from the top down coaxial embedding outer axle (12) inside and rather than the cooperation of sliding, the elastic component sets up between interior axle (10) and outer axle (12), just the flexible direction of elastic component is on a parallel with the axial of outer axle (12), the locating part is installed between interior axle (10) and outer axle (12) and is restricted the relative position of interior axle (10) and outer axle (12), driving piece fixed mounting is on support frame (19), just the driving piece is used for driving interior axle (10) and is elevating movement along vertical direction.

2. The self-adaptive balance base according to claim 1, wherein the elastic member comprises a pressure spring (13), stepped surfaces for installing the pressure spring (13) are formed on the outer side of the inner shaft (10) and the inner side of the outer shaft (12), an avoiding space is further formed at the bottom of the outer shaft (12), the pressure spring (13) is sleeved on the outer side of the inner shaft (10), the upper end of the pressure spring (13) abuts against the stepped surfaces on the outer side of the inner shaft (10), and the lower end of the pressure spring (13) abuts against the stepped surfaces on the inner side of the outer shaft (12).

3. The adaptive balancing base of claim 1, characterized in that the limiting member comprises a limiting pin (17), the limiting pin (17) is fixedly mounted on the inner shaft (10), the outer shaft (12) is provided with a limiting waist hole (18) inside, and the limiting pin (17) is embedded in the limiting waist hole (18).

4. The adaptive balancing base of claim 1, wherein the elastic member has an elastic force of F, the total weight of the support (19) lifted is G, the elastic force F of the elastic member is less than one third of the total weight G of the support (19) lifted, and | F-1/4G | has a value as small as possible.

5. The self-adaptive balance base as claimed in claim 1, wherein a second support assembly (5) is further disposed at the bottom of the support frame (19), the second support assembly (5) comprises a support shaft (14) and a driving member, the support shaft (14) vertically penetrates through the bottom of the support frame (19) and is slidably engaged with the bottom of the support frame, the driving member is fixedly mounted on the support frame (19), and the driving member drives the support shaft (14) to move up and down in the vertical direction.

6. The self-adaptive balance base according to claim 5, wherein an upper limit sensor (16) and a lower limit sensor (15) are arranged on the support frame (19), the first support assembly (6) and the second support assembly (5) are both provided with a sensing block (9), when the sensing block (9) triggers the upper limit sensor (16) or the lower limit sensor (15), the upper limit sensor (16) or the lower limit sensor (15) sends a signal to a controller on the support frame (19), and the controller on the support frame (19) controls all driving members to stop moving together.

7. A self-adaptive balance base according to claim 5, wherein a shaft sleeve (7) is arranged at the lower side of the bottom of the support frame (19), the shaft sleeve (7) is arranged opposite to the first support assembly (6) and the second support assembly (5), any outer shaft (12) penetrates through the shaft sleeve (7) opposite to the outer shaft and is in sliding fit with the outer shaft, and any support shaft (14) penetrates through the shaft sleeve (7) opposite to the outer shaft and is in sliding fit with the outer shaft.

8. An adaptive balancing base according to claim 5, characterized in that the first support assembly (6) is provided with one set on the support (19), the second support assembly (5) is provided with three sets on the support (19), and one set of the first support assembly (6) and three sets of the second support assembly (5) are arranged in a rectangle at the bottom of the support (19).

9. An adaptive balancing base according to claim 1, characterized in that; be provided with locking device (11) on support frame (19), locking device (11) are relative setting with first support assemblage (6), just when first support assemblage (6) are in the supported state, locking device (11) are outer axle (12) hold tightly.

10. The method of claim 1, further comprising the steps of:

s1, when the supporting frame (19) needs to be supported, starting a controller on the supporting frame (19), controlling four driving pieces to drive a first supporting assembly (6) and three groups of second supporting resistances (5) to move downwards by the controller at the same time until the controller receives a signal that the sensing block (9) triggers a lower limit sensor (15), and controlling the four driving pieces to stop moving and the locking device (11) to lock an outer shaft (12) at the same time;

s2, when the supporting frame (19) is to be lowered, the controller sends out an instruction, the locking device (11) loosens the outer shaft (12), then four driving pieces respectively drive the first supporting assembly (6) and the three groups of second supporting assemblies (5) to move upwards until the controller receives a signal of the upper limit sensor (16) triggered by the induction block (9), and the controller stops moving four driving pieces simultaneously.