CN211419439U - Lifting device for dental chair - Google Patents

Abstract

The utility model discloses a lifting device for dental chair, which comprises a stand column, a lifting frame, an adjusting mechanism and a first driving mechanism, wherein the lifting frame is connected with the stand column in a sliding way and comprises a frame and at least one pair of rolling wheels which are arranged oppositely; the adjusting mechanism is used for driving the rolling wheel which can move on the frame to move towards the upright post; the first driving mechanism is used for driving the lifting frame to slide up and down; wherein, when the rolling wheel sets up to a plurality of pairs, a plurality of pairs of rolling wheels are vertical and are set up side by side. The adjusting mechanism is utilized to drive the rolling wheels to move towards the direction of the upright column, so that the rolling wheels are fully abutted against the upright column, the same pair of rolling wheels are fully abutted against the upright column, and meanwhile, the stress is uniform, so that the rolling wheels are more stable when sliding on the upright column.

Description

Lifting device for dental chair

Technical Field

The utility model relates to the field of medical equipment, especially a jacking equipment that dental chair used.

Background

At present, the vertical lifting mechanism fixed by the traditional dental chair generally transmits through the cooperation of a vertical worm motor and four cylindrical guide rail sliding block assemblies, however, the processing precision and the assembly precision of the upper and lower installation positions of the fixed guide rail are high in the design, and the cost is considered, the precision of general design and production cannot reach high precision, therefore, in the using process, the verticality of the guide rail is influenced under the external effect easily, the cooperation degree between the guide rail and the sliding block is influenced, the equipment vibrates in the running process, and the normal treatment work of doctors is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a lifting device that dentistry chair was used can effectively improve the stability of equipment at the slip in-process.

The technical proposal adopted by the utility model to solve the technical problems is that,

according to the utility model discloses an aspect provides a lifting device that dental chair used, include:

column: standing on the ground;

the crane: the device comprises a stand column, a rack and at least one pair of rolling wheels, wherein the rolling wheels are arranged oppositely and are connected with the stand column in a sliding manner;

the adjusting mechanism comprises: the rolling wheel is used for driving the rolling wheel which can move on the machine frame to move towards the upright post;

a first drive mechanism: the lifting frame is used for driving the lifting frame to slide up and down;

when the rolling wheels are arranged in multiple pairs, the rolling wheels are vertically arranged side by side.

The beneficial effects of the utility model are that, utilize adjustment mechanism drive roll wheel to remove to the stand direction, make the roll wheel fully offset with the stand, make same all fully offset with the stand to the roll wheel, the atress makes the atress even simultaneously, and is more steady when making the roll wheel slide on the stand.

According to the utility model discloses a lifting equipment that dental chair used of first aspect, the frame includes two blocks of curb plates, the wheel that rolls is installed two between the curb plate, the mounting bracket is fixed two between the curb plate. The rolling wheels, in addition to providing a shifting function, also provide a supporting function for bearing the load applied by the mounting seat mounted on the machine frame.

According to the utility model discloses a lifting equipment that dentistry chair used of first aspect, first actuating mechanism is including the driving motor and the movable block of taking the worm, the end of worm extends to the top of stand and with stand fixed connection, the movable block with frame fixed connection, the movable block sets up on the worm and can reciprocate on the worm.

According to the utility model discloses a lifting equipment that dentistry chair used of first aspect, adjustment mechanism includes rotating turret, crossbeam and first screw, be provided with the pivot in the wheel that rolls, the wheel that rolls winds circumferential direction is done to the pivot, the both ends of pivot are rotated and are connected on the rotating turret, the both ends of pivot are passed the rotating turret inserts in the frame, be provided with oblique spout in the frame, oblique spout is followed the outside oblique downward setting in surface of stand, the pivot is inserted the spout can the slip, the rotating turret is provided with the butt plate, the crossbeam is fixed in the frame, first screw inserts the crossbeam can stretch out and draw back in the crossbeam, the end of first screw with butt plate counterbalance can drive the rotating turret with the wheel that rolls removes. First screw is flexible on the crossbeam, adjusts the interval between wheel and the stand that rolls, makes the surface of wheel and the stand surface of rolling fully offset, makes the wheel that rolls fully roll under the condition of bearing load on the stand, guarantees that the elevator frame is more steady at the in-process that goes up and down.

According to the utility model discloses a lifting means that dentistry chair used of first aspect, the wheel that rolls still includes bearing and gyro wheel, the bearing housing is established in the pivot and with the pivot is rotated and is connected, the gyro wheel cover is established on the bearing. The rotating shaft is used for supporting, and meanwhile, the bearing sleeve drives the idler wheel to roll on the stand column.

According to the utility model discloses a lifting device that dental chair used of first aspect, the frame with still be provided with the clutch blocks between the stand, the clutch blocks with the surface of stand offsets, the clutch blocks is connected with the drive the clutch blocks to the second actuating mechanism that the stand direction fed, the clutch blocks is provided with at least two, the clutch blocks sets up the both sides of stand, the clutch blocks set up with the position that the wheel that rolls set up is different. The friction block is arranged between the rack and the stand column, the second driving mechanism is utilized to adjust the distance between the friction block and the stand column, the rolling wheels are matched to adjust the verticality of the lifting frame from four sides of the stand column, and the stable and smooth lifting process is guaranteed.

According to the utility model discloses a lifting equipment that dental chair used of first aspect, second actuating mechanism includes second screw and fixing base, be provided with in the fixing base and be used for the embedding the recess of clutch blocks, the second screw inserts the frame passes in the fixing base, the second screw with the clutch blocks offsets. Preferably, the friction block moves in the area of the groove and cannot be separated from the groove, the second screw is used for enabling the friction block to be tightly attached to the stand column, the perpendicularity of the whole lifting frame is effectively adjusted, and the lifting process is stable.

According to the utility model discloses a lifting equipment that dental chair used of first aspect, the upper end and the lower extreme of worm are provided with limit switch respectively. The displacement distance of the lifting frame is restricted, and normal work of the equipment is guaranteed.

According to the utility model discloses a lifting equipment that dentistry chair used of first aspect, the crane is provided with two first through-holes, two first through-hole sets up respectively the both sides of stand, the stand is provided with the second through-hole, first through-hole with second through-hole position corresponds, first through-hole with can insert the bracing piece in the second through-hole. When the part of crane need be changed, can insert the bracing piece and come to carry on spacingly to the crane, prevent that the crane from falling down.

According to the utility model discloses a lifting equipment that dentistry chair used of first aspect, still be provided with complementary unit on the crane, complementary unit sets up the crane is kept away from one side of adjustment mechanism, complementary unit include with the butt piece that stand surface offseted, the butt piece can stretch out and draw back on the crane. The lifting direction of the whole lifting frame is adjusted in an auxiliary mode through the matching adjusting mechanism, the verticality is guaranteed, and the worm is prevented from being influenced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of an angle structure of an embodiment of the present invention;

fig. 2 is a schematic structural view of another angle of the embodiment of the present invention;

fig. 3 is a schematic structural view of an angle between the lifting frame and the adjusting mechanism in the present invention;

fig. 4 is a schematic structural view of another angle between the lifting frame and the adjusting mechanism in the utility model;

FIG. 5 is a schematic sectional view taken along line A-A in FIG. 4;

FIG. 6 is a schematic sectional view taken along line B-B in FIG. 4;

fig. 7 is an enlarged view of the portion C in fig. 5.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, a lifting device for a dental chair comprises a column and a lifting frame 20, wherein the column 10 is erected on the ground, the lifting frame 20 is slidably connected with the column 10, the lifting frame 20 comprises a frame and at least one pair of rolling wheels 22 arranged oppositely, in this embodiment, referring to fig. 3, the frame comprises two side plates 21 arranged on two sides of the column 10 respectively, two ends of the rolling wheels 22 are arranged on the two side plates 21 respectively, an installation frame 23 for installing a chair is fixedly connected between the side plates 21, the two rolling wheels 22 of the same pair of rolling wheels 22 are arranged on two opposite sides of the column 10 respectively, the rolling wheels 22 are abutted against the surface of the column 10, at least one rolling wheel 22 can move towards the column 10 on the frame, wherein at least one rolling wheel 22 in the same pair of the two rolling wheels 22 is provided with an adjusting mechanism 30 for driving the rolling wheel 22 to move towards the column 10, such as by pushing the roller wheel 22 with an air cylinder or the like.

During actual use, the lifting frame 20 is lifted up and down, the adjusting mechanism 30 is used for driving the rolling wheels 22 to move towards the direction of the upright post 10, so that the rolling wheels 22 are fully abutted against the upright post 10, the same pair of rolling wheels 22 are fully abutted against the upright post 10, and meanwhile, stress is applied, so that the stress is uniform, and the rolling wheels 22 are more stable when sliding on the upright post 10.

The rolling wheel 22 is arranged between the two side plates 21, so that the rolling wheel 22 and the mounting seat are on the same straight line, and the rolling wheel 22 in the middle can play a supporting role in addition to a moving role and is used for bearing a load applied by the mounting seat arranged on the machine frame. Thus, in order to adequately carry the load of the entire mounting, the rolling wheels 22 in this example are provided with several pairs, in particular three pairs, which can be increased or decreased depending on the load, thus effectively making the entire apparatus safer.

In some embodiments, the lifting frame 20 is driven by the first driving mechanism 40 to move up and down, in this embodiment, referring to fig. 2, the first driving mechanism 40 includes a driving motor 41 with a worm 43 and a moving block 42, the end of the worm 43 extends to the top end of the upright post 10 and is fixedly connected with the upright post 10, the moving block 42 is fixedly connected with the machine frame, and the moving block 42 is disposed on the worm 43 and can move up and down on the worm 43.

In this embodiment, the adjusting mechanism 30 includes a rotating frame 31, a cross beam 32 and a first screw 33, the rolling wheel 22 is provided with a rotating shaft 221, the rolling wheel 22 rotates around the rotating shaft 221 in the circumferential direction, two ends of the rotating shaft 221 are rotatably connected to the rotating frame 31, two ends of the rotating shaft 221 penetrate through the rotating frame 31 and are inserted into the rack, the frame is provided with an inclined sliding chute 211, the inclined sliding chute 211 is arranged from the surface of the upright post 10 to the outside and downwards, the rotating shaft 221 is inserted into the sliding groove 211 and can slide on the sliding groove, the rotating frame 31 is provided with a butt plate, the cross member 32 is fixed to the frame, the first screw 33 is inserted into the cross member 32 and can be extended and contracted in the cross member 32, the end of the first screw 33 abuts against the abutting plate and can drive the rotating frame 31 and the rolling wheel 22 to move.

Referring to fig. 3 and 4, the two rotating frames 31 are respectively arranged at two ends of the rotating shaft 221, two first screws 33 are also arranged and are respectively arranged below the abutting plates of the rotating frames 31, the first screws 33 are inserted into the cross beams 32 and can be stretched on the cross beams 32, the first screws 33 stretch on the cross beams 32 and push the rotating frames 31 to drive the rolling wheels 22 to move on the frame, so that the rolling wheels 22 are further attached to the upright posts 10, the distance between the rolling wheels 22 and the upright posts 10 is adjusted, the surfaces of the rolling wheels 22 are fully abutted to the surfaces of the upright posts 10, the rolling wheels 22 roll under the condition that the load is fully borne on the upright posts 10, and the lifting frame 20 is ensured to be more stable in the lifting process.

Preferably, referring to fig. 1, in this embodiment, only one adjusting mechanism 30 is provided, the adjusting mechanism 30 is provided on the rolling wheel 22 on one side far away from the mounting seat, the rolling wheels 22 on the same side are rotatably connected to the same rotating frame 31, when the second screw 2131 pushes the abutting plate of the rotating frame 31, the rolling wheels 22 move upwards at the same time, the distance between the upright post 10 and the stand column 10 is adjusted, meanwhile, the stand column 10 tends to the rolling wheels 22 on the other side under pressure, the distance between the rolling wheels 22 on both sides and the stand column 10 is reduced, the perpendicularity of the whole lifting frame 20 tends to be parallel to the upright post 10, and the device is kept stable and smooth during lifting.

In some embodiments, referring to fig. 6, the rolling wheel 22 further includes a bearing 222 and a roller 223, the bearing 222 is disposed on the rotating shaft 221 and rotatably connected to the rotating shaft 221, and the roller 223 is disposed on the bearing 222. Is supported by the rotating shaft 221, and the bearing 222 is sleeved with the roller 223 to roll on the upright post 10.

In some embodiments, referring to fig. 5, a friction block 212 is further disposed between the frame and the upright post 10, in this embodiment, the friction block 212 is mounted on the side plate 21, the friction block 212 abuts against a surface of the upright post 10, the friction block 212 is connected to a second driving mechanism 213 for driving the friction block 212 to advance toward the upright post 10, the second driving mechanism 213 may be a structure capable of applying a pressure to the friction block 212, such as a buffer spring or buffer rubber, and in this embodiment, referring to fig. 7, the second driving mechanism 213 includes a second screw 2131 and a fixed seat 2132, a groove for fitting the friction block 212 is disposed in the fixed seat 2132, the second screw 2131 is inserted into the frame and penetrates through the fixed seat 2132, and the second screw 2131 abuts against the friction block 212. Preferably, the friction blocks 212 move in the area of the groove and do not fall out of the groove, at least two friction blocks 212 are provided, the friction blocks 212 are arranged on two sides of the upright post 10, and the friction blocks 212 are arranged at positions different from the positions where the rolling wheels 22 are arranged. The friction block 212 is arranged between the machine frame and the upright post 10, extends into the groove by using the second screw 2131, and pushes the friction block 212 to feed towards the upright post 10, so that the distance between the friction block 212 and the upright post 10 is adjusted, the verticality of the lifting frame 20 is adjusted from four sides of the upright post 10 by matching with the rolling wheels 22, and the stable and smooth lifting process is ensured.

In some embodiments, referring to fig. 1, the worm 43 is provided with limit switches 44 at the upper and lower ends thereof, respectively. The displacement distance of the lifting frame 20 is restricted, and the normal work of the equipment is ensured. Preferably, the limit switch 44 can select an infrared sensing switch or a single-pole switch to the shift lever, and the lifting range of the lifting frame 20 is limited by triggering the infrared sensing switch or shifting the shift lever by the rack so as to control the start or stop of the driving motor 41 during the lifting process of the lifting frame 20.

In some embodiments, referring to fig. 5, the crane 20 is provided with two first through holes, the two first through holes are respectively disposed at two sides of the upright post 10, the upright post 10 is provided with a second through hole, the first through hole corresponds to the second through hole in position, and a support rod 50 can be inserted into the first through hole and the second through hole. When the part of crane 20 needs to be changed, the bracing piece 50 can be inserted to limit the crane 20, and the crane 20 is prevented from falling down.

In some embodiments, referring to fig. 4, the lifting frame 20 is further provided with an auxiliary mechanism, the auxiliary mechanism is arranged on one side of the lifting frame 20 far away from the adjusting mechanism 30, the auxiliary mechanism comprises an abutting block 60 abutting against the surface of the upright post 10, and the abutting block 60 can be extended and retracted on the lifting frame 20. The lifting direction of the whole lifting frame 20 is adjusted in an auxiliary mode through the matching adjusting mechanism 30, the verticality is guaranteed, and the worm is prevented from being influenced. In this embodiment, the lifting frame 20 extends to form a mounting portion 61, the abutment block 60 is inserted into the mounting portion 61, one end of the abutment block 60 away from the upright post 10 is provided with a screw thread and is engaged with a nut 62, and the position of the abutment block 60 can be adjusted by the nut 62.

While the invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A dental chair lift apparatus, comprising:

column: standing on the ground;

the crane: the device comprises a stand column, a rack and at least one pair of rolling wheels, wherein the rolling wheels are arranged oppositely and are connected with the stand column in a sliding manner;

the adjusting mechanism comprises: the rolling wheel is used for driving the rolling wheel which can move on the machine frame to move towards the upright post;

a first drive mechanism: the lifting frame is used for driving the lifting frame to slide up and down;

when the rolling wheels are arranged in multiple pairs, the rolling wheels are vertically arranged side by side.

2. The dental chair lift device of claim 1, wherein said frame comprises two side plates, said roller wheels being mounted between said two side plates, said mounting bracket being secured between said two side plates.

3. The lifting device for dental chair as claimed in claim 1 or 2, wherein the first driving mechanism comprises a driving motor with a worm and a moving block, the end of the worm extends to the top end of the upright and is fixedly connected with the upright, the moving block is fixedly connected with the frame, and the moving block is arranged on the worm and can move up and down on the worm.

4. The lifting device for dental chairs according to claim 1 or 2, wherein the adjusting mechanism comprises a rotating frame, a cross beam and a first screw, a rotating shaft is arranged in the rolling wheel, the rolling wheel rotates around the rotating shaft circumferentially, two ends of the rotating shaft are connected to the rotating frame in a rotating manner, two ends of the rotating shaft penetrate through the rotating frame and are inserted into the rack, an inclined sliding groove is arranged on the rack, the inclined sliding groove is arranged obliquely downwards from the surface of the upright, the rotating shaft is connected with the sliding groove in a sliding manner, the rotating frame is provided with a butt plate, the cross beam is fixed on the rack, the first screw is inserted into the cross beam and can extend and retract in the cross beam, and the tail end of the first screw abuts against the butt plate and can drive the rotating frame and the rolling wheel to move.

5. The dental chair lifting device as claimed in claim 4, wherein the roller wheel further comprises a bearing and a roller, the bearing is disposed on the shaft and rotatably connected to the shaft, and the roller is disposed on the bearing.

6. The lifting device for dental chairs according to claim 1, wherein a friction block is further disposed between the frame and the column, the friction block abuts against a surface of the column, a second driving mechanism for driving the friction block to feed in the direction of the column is connected to the friction block, at least two friction blocks are disposed on two sides of the column, and the friction blocks are disposed at positions different from those of the rolling wheels.

7. The lifting device of claim 6, wherein the second driving mechanism comprises a second screw and a fixing seat, the fixing seat is provided with a groove for inserting the friction block, the second screw is inserted into the frame and passes through the fixing seat, and the second screw abuts against the friction block.

8. The dental chair lifting device as claimed in claim 3, wherein the worm is provided with limit switches at upper and lower ends thereof.

9. The lifting device for dental chair as claimed in claim 1, wherein the lifting frame is provided with two first through holes, the two first through holes are respectively provided at both sides of the upright post, the upright post is provided with a second through hole, the first through hole corresponds to the second through hole in position, and a support rod can be inserted into the first through hole and the second through hole.

10. The lifting device of claim 1, wherein the lifting frame is further provided with an auxiliary mechanism, the auxiliary mechanism is disposed on a side of the lifting frame away from the adjusting mechanism, the auxiliary mechanism comprises an abutting block abutting against the surface of the upright post, and the abutting block can extend and retract on the lifting frame.

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