CN214469670U - Gondola water faucet gets rid of equipment of blowing - Google Patents

Abstract

The utility model discloses a gondola water faucet gets rid of and blows equipment, including the frame, and: the driving piece is arranged on the frame; the rotating part is rotatably connected to the rack around a first axis extending horizontally, is connected with the output end of the driving part to rotate relative to the rack, and is eccentrically provided with an eccentric shaft relative to the first axis; the swinging piece swings around a second axis parallel to the first axis and is rotatably connected to the rack, and a sliding groove extending along the swinging radial direction of the swinging piece is arranged on the swinging piece; the clamp is fixedly connected with the swinging piece and used for clamping or releasing the shower head; the air blowing assembly is provided with an air outlet facing to the water inlet of the shower head; the eccentric shaft is inserted into the sliding groove, and when the rotating piece rotates, the eccentric shaft rotates around the first axis and slides along the extending direction of the sliding groove so as to drive the swinging piece, the clamp and the shower head to swing back and forth between the first position and the second position. This gondola water faucet is got rid of and is blown equipment and can make the inside residual water of gondola water faucet rock thereby more easily with the inside discharge of residual water from the gondola water faucet through the swing.

Description

Gondola water faucet gets rid of equipment of blowing

Technical Field

The utility model relates to a gondola water faucet is got rid of and is blown equipment technical field, concretely relates to gondola water faucet is got rid of and is blown equipment.

Background

The gondola water faucet needs to lead to water and detects after production is accomplished, because gondola water faucet form itself is comparatively flat, and inner structure is complicated, will detect and to form the residual water in gondola water faucet inside after the water that lets in pours out, in order to discharge the inside residual water of gondola water faucet, makes the gondola water faucet keep dry, need carry out the drainage through the equipment of blowing after detecting to the gondola water faucet. The existing water blowing equipment drains water by introducing high-pressure gas into a shower head for a long time, which causes water to be easily accumulated at the corners inside the shower head and cannot completely remove residual water.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned defect or problem that exist among the background art, provide a gondola water faucet and get rid of equipment of blowing, it can let in high-pressure gas to gondola water faucet inside in the swing back and forth of drive gondola water faucet, thereby it rocks the inside residual water of gondola water faucet and discharges residual water from gondola water faucet inside more easily through the swing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the first technical scheme is as follows: the utility model provides a gondola water faucet is got rid of and is blown equipment, includes the frame, still includes: the driving piece is arranged on the rack; the rotating part is rotatably connected to the rack around a first axis extending horizontally, is connected with the output end of the driving part to rotate relative to the rack, and is eccentrically provided with an eccentric shaft relative to the first axis; the swinging piece swings around a second axis parallel to the first axis and is rotatably connected to the rack, and a sliding groove extending along the swinging radial direction of the swinging piece is formed in the swinging piece; the clamp is fixedly connected with the swinging piece and used for clamping or releasing the shower head; the air blowing assembly is provided with an air outlet facing the water inlet of the shower head; the eccentric shaft is inserted into the sliding groove, and when the rotating part rotates, the eccentric shaft rotates around the first axis and slides along the extending direction of the sliding groove so as to drive the swinging part, the clamp and the shower head to swing back and forth between the first position and the second position.

The second technical scheme based on the first technical scheme is as follows: the driving piece is a servo motor, and the output end of the driving piece is in transmission connection with the rotating piece so as to drive the rotating piece to rotate relative to the rack.

A third technical solution based on the second technical solution: the device also comprises a conveyor belt; the two ends of the conveying belt are respectively and tightly sleeved on the output end of the servo motor and the rotating piece.

A fourth technical solution based on the first technical solution: the clamp comprises a soft buffer piece, a first clamping jaw and a second clamping jaw; the first clamping jaw and the second clamping jaw move towards or away from each other to clamp or release the shower head; soft bolster install in first clamping jaw and second clamping jaw are used for the centre gripping the wall of gondola water faucet.

A fifth technical solution based on the fourth technical solution: the clamp is a pneumatic clamping jaw.

A sixth technical solution based on the first technical solution: the water receiving piece is used for clamping the shower head and is positioned below the shower head in the swinging process of the shower head so as to receive residual water discharged by the shower head.

A seventh technical solution based on the first technical solution: the blowing assembly comprises a blowing pipe; the air blowing pipe is provided with the air outlet and is fixed relative to the clamp.

An eighth technical means based on the seventh technical means: the air blowing assembly further comprises an air pump; the air outlet end of the air pump is communicated with the air blowing pipe; the air blowing pipe intermittently exhausts air.

A ninth technical solution based on the eighth technical solution: the device also comprises a connecting block; the connecting block is fixedly connected to the swinging piece; the clamp is fixedly connected to the connecting block; the air blowing pipe is fixedly connected with the connecting block so as to be fixed relative to the clamp.

A tenth technical solution based on the first technical solution: the swing piece rotating shaft, the first bearing and the second bearing are further included; the first bearing outer ring is fixedly connected to the frame, and the inner ring of the first bearing outer ring is fixedly connected to the rotating piece; the rotating shaft of the swinging piece is fixedly connected to the rack and extends along the direction of a second axis; the outer ring of the second bearing is fixedly connected with the swinging piece, and the inner ring of the second bearing is fixedly connected with the rotating shaft of the swinging piece.

As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

a technical scheme provides a gondola water faucet gets rid of and blows equipment, the driving piece can drive and rotate a relative frame rotation, rotate the in-process and through the reciprocal swing of eccentric shaft drive swing piece between primary importance and second location, anchor clamps and swing piece rigid coupling, consequently anchor clamps can swing along with swing piece, anchor clamps can be used for the centre gripping gondola water faucet simultaneously, thereby order about the gondola water faucet also swing thereupon, the subassembly of blowing can blow towards the water inlet of gondola water faucet, the gondola water faucet swing makes the residual water in the gondola water faucet be in the state of motion simultaneously, can avoid the residual water to gather the corner at the gondola water faucet, the cooperation is to the operation of blowing of gondola water faucet, can discharge the residual water from the gondola water faucet effectively.

The second technical scheme is limited to the driving piece as a servo motor, and the servo motor can effectively control the rotating speed and other operating parameters of the servo motor through a controller, so that the operating personnel can adjust the swinging frequency of the shower head conveniently.

The third technical scheme is additionally provided with a conveyor belt, and the conveyor belt can transmit the power of the servo motor to the rotating part.

The fourth technical scheme is provided with soft bolster on the first clamping jaw of anchor clamps and second clamping jaw wall in opposite directions, soft bolster can contact with the gondola water faucet in anchor clamps centre gripping gondola water faucet, avoids anchor clamps damage gondola water faucet surface.

The fifth technical scheme is limited to the pneumatic clamping jaw with anchor clamps, and the pneumatic clamping jaw belongs to prior art, can realize the centre gripping to the gondola water faucet simply conveniently.

The sixth technical scheme adds a water receiving piece on the equipment is blown to the gondola water faucet flail, and the water receiving piece can conveniently accept the gondola water faucet and is being flail and blow the discharged residual water of in-process, avoids the residual water to splash.

The seventh technical scheme has injectd the working method of gas blow pipe, and it is that the gondola water faucet is ventilated towards intermittently, and this kind of mode of blowing can avoid leading to the residual water in the gondola water faucet to be forced to the gondola water faucet corner by the atmospheric pressure because of ventilating for a long time, but makes the residual water be in motion state all the time in the swing of cooperation gondola water faucet, has made things convenient for the discharge of residual water.

The eighth technical scheme has injectd that the air blowing assembly comprises an air pump, and air is supplied to the air blowing pipe through the air pump.

The ninth technical scheme is additionally provided with a connecting block, and the connecting block can be used for connecting the clamp with the swinging piece and can also be used for fixing the air blowing pipe.

The tenth technical proposal limits the rotating part and the swinging part to realize the rotating connection with the frame through the bearing, and the bearing can effectively improve the rotating efficiency of the rotating part and the swinging part.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an exploded view of a shower head blowing device according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the shower head throwing and blowing apparatus of FIG. 1 after assembly;

FIG. 3 is a schematic view of the structure of the bracket, the rotating member, the swinging member and the connecting block shown in FIG. 1;

FIG. 4 is a schematic cross-sectional view of a part of the components of the shower head throwing and blowing apparatus assembled with the shower head;

FIG. 5 is a partial schematic structural view of the rotating member and the swinging member shown in FIG. 3;

FIG. 6 is a schematic view of the fixture, the gas blow tube and the shower head of FIG. 1;

fig. 7 is a schematic cross-sectional view of fig. 6.

Description of the main reference numerals:

10. a machine platform; 11. an electric cabinet; 12. a water receiving member; 13. a table top; 20. a drive assembly; 21. a drive member; 22. a transmission belt; 30. a swing assembly; 31. a support; 32. a belt mounting section; 33. a rotating member; 331. a first bearing; 34. an eccentric shaft; 35. a swing member shaft; 36. a swinging member; 361. a sliding groove; 362. a second bearing; 37. connecting blocks; 40. a clamp; 41. an air blowing pipe; 411. a relief portion; 42. a first jaw; 43. a second jaw; 50. a shower head.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are preferred embodiments of the invention and should not be considered as excluding other embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, all directional or positional relationships, such as those using the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like, are based on the directional or positional relationships illustrated in the drawings and are for the purpose of convenience in describing the invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the scope of the invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

Referring to fig. 1, fig. 1 shows a pair of gondola water faucet gets rid of structure explosion diagram of the embodiment of blowing equipment, this gondola water faucet gets rid of and blows the end that equipment can set up at the gondola water faucet production line to it sets up after gondola water faucet water service check out test set, through conveyer belt, transfer mode such as manipulator or manual work, can with through leading to water to detect qualified gondola water faucet carry to this gondola water faucet get rid of and blow equipment, and get rid of through this gondola water faucet and blow the inside residual water of equipment removal gondola water faucet, guarantee that the gondola water faucet can not appear leaking, the situation of infiltration in packing, transportation process. Of course, in a production line, can set up a plurality of gondola water faucet and get rid of the equipment of blowing in order to improve gondola water faucet production efficiency.

The utility model provides a gondola water faucet gets rid of and blows equipment mainly includes: the device comprises a rack, an electric cabinet 11, a water receiving part 12, a driving assembly 20, a swinging assembly 30, a clamp 40 and a blowing assembly.

Wherein, the frame comprises a machine table 10 and a bracket 31, and the machine table 10 is used for being placed on a base (such as the ground) of a production workshop and providing support for components of the shower head throwing and blowing equipment. As shown in fig. 2, the machine table 10 is provided with a table top 13, and the table top 13 is substantially horizontal when the machine table 10 is placed on the base. The machine table 10 is provided with four supporting columns, the table board 13 is arranged on the top ends of the four supporting columns, and a certain distance exists between the table board 13 and the base, so that the shower head is conveniently operated by a worker. The universal wheel that can the locking is provided with in the bottom of pillar, and this makes board 10 can remove at certain within range, is convenient for adjust the position that the gondola water faucet was thrown and is blown equipment. In addition, a substantially horizontal receiving plate is provided at the underside of the table 13, which receiving plate can be used for receiving objects or water receivers 12 in a shower flail.

It should be noted that, in the present invention, the terms "upper", "lower", "left", "right", "front", "back" and the like refer to the orientation of the shower head corresponding to the base such as the ground, and refer to the direction shown in fig. 2 in the normal placement state of the shower head in the actual use.

As shown in fig. 2 and 3, the bracket 31 is a substantially rectangular plate-shaped member, the lower end of which is fixed to the table 13 by bolts, and the upper end of which extends forward of the shower head blowing device by a swing member rotating shaft 35, the swing member rotating shaft 35 is a cylindrical rod member fixed to the bracket 31 by bolts, and the extending direction of the cylindrical rod member is defined as a second axis, and the extending direction of the second axis is the front-back direction shown in fig. 2. .

The electric cabinet 11 is fixed at the rear side of the machine 10 and is used for controlling the parts which need to be electrically controlled, such as the driving assembly 20, the clamp 40 and the blowing assembly of the shower head throwing and blowing equipment.

The water receiving member 12 is a box having an upper opening, and is adapted to receive residual water discharged from the shower head.

The drive assembly 20 mainly comprises a drive member 21 and a drive belt 22.

The driving member 21 is mounted on the frame, and is specifically fixed at the lower wall of the table top 13 of the machine table 10, and is a servo motor electrically connected to the electric cabinet 11, and has an output shaft capable of outputting rotational motion. One end of the transmission belt 22 is sleeved on the output shaft of the servo motor, and the other end of the transmission belt penetrates through the table top 13 upwards from the lower wall position of the table top 13 and then reaches the upper end position of the bracket 31.

As shown in fig. 3, 4 and 5, the swing assembly 30 mainly includes a rotation member 33, a swing member 36 and a connection block 37.

The main part of the rotating part 33 is a cylindrical shaft rod which penetrates through the plate surface of the bracket 31 and is rotatably connected with the bracket 31, in order to improve the smoothness of the rotational connection between the rotating part 33 and the bracket 31, a first bearing 331 is arranged between the rotating part 33 and the bracket 31, the rotating part 33 is fixedly connected with the inner ring of the first bearing 331 firstly, and the outer ring of the first bearing 331 is fixedly connected with the bracket 31, so that the rotating part 33 is rotatably connected with the bracket 31. The extending direction of the rotating member 33 is defined as a first axis, which is parallel to the second axis. The rear end of the rotating member 33 is provided with a belt mounting portion 32, and the belt mounting portion 32 is an annular member which is axially position-limited and engaged with the rotating member 33 by a key connection. The other end of the transmission belt 22 opposite to the transmission belt 22 is sleeved on the outer wall of the transmission belt mounting part 32, the transmission belt 22 is tightened by the cooperation of the two end members of the transmission belt 22, and the rotating part 33 can rotate relative to the bracket 31 when the driving part 21 operates. An eccentric shaft 34 is provided at the tip of the rotor 33. The eccentric shaft 34 is in this embodiment a rod-like structure provided on the turning piece 33 and extending in a direction parallel to the first axis, where the extending direction of the eccentric shaft 34 is defined as the third axis. The third axis is parallel to the first axis but not collinear with the first axis, so that eccentric shaft 34 makes a circular motion around the first axis when eccentric shaft 34 rotates at rotation of rotation element 33.

The oscillating member 36 is a substantially rectangular plate-shaped member, one end of which is rotatably connected to the oscillating member rotating shaft 35, and further, a second bearing 361 may be provided between the oscillating member 36 and the oscillating member rotating shaft 35 to improve the rotating efficiency, wherein the oscillating member rotating shaft 35 is fixedly connected to an inner ring of the second bearing 361, and the oscillating member 36 is fixedly connected to an outer ring of the second bearing 361. . The oscillating member 36 oscillates about the second axis with respect to the holder 31, and a sliding groove 361 is provided in the oscillating member 36, the sliding groove 361 extending in a radial direction in the oscillating direction of the oscillating member 36 and being fitted to the eccentric shaft 34 of the rotating member 33.

Wherein, the rotating element 33 rotating for 360 degrees is provided with an eccentric shaft 34 extending parallel to the rotating axis of the rotating element 33 and staggered, when the eccentric shaft 34 makes a circular motion around the rotating axis of the rotating element 33, it will slide in the sliding groove 361 of the swinging element 36, and the eccentric shaft 34 will apply force to the side wall of the sliding groove 361 during the sliding process, thereby driving the swinging element 36 to move. Since the oscillating member 36 has its own axis of rotation, the application of force by the eccentric shaft 34 causes the oscillating member 36 to perform an oscillating movement; and the swinging member 36 swings back and forth between the first position and the second position, i.e., two maximum angular positions with respect to the up-down direction when the swinging member 36 swings, once per one rotation of the rotating member 33.

Further, the swing angle of the swinging member 36 can be controlled by controlling the distance of the extending direction of the eccentric shaft 34 from the first axis, and in the case where the length of the slide groove 361 is constant, when the distance of the eccentric shaft 34 from the first axis is short, the swing angle of the swinging member 36 is small, whereas the swing angle of the swinging member 36 is large.

The connecting block 37 is a plate-shaped member which is fixedly connected to the lower end of the swinging member 36 by welding or screwing and extends toward the front of the shower head blowing apparatus.

As shown in fig. 6 and 7, the clamping device 40 is fixedly connected to the front end of the connecting block 37 by means of a screw, and includes a first clamping jaw 42 and a second clamping jaw 43, and the first clamping jaw 42 and the second clamping jaw 43 can move towards or away from each other under the action of the pneumatic driving device so as to clamp or release the shower head 50. The clamp 40 here is a pneumatic jaw, and since the pneumatic jaw is a prior art, its internal structure will not be described in detail.

Correspondingly, the first clamping jaw 42 and the second clamping jaw 43 are respectively provided with a clamping wall surface matched with the clamped part of the shower head 50, and the clamping wall surface is matched with the clamped part of the shower head 50 in shape, meanwhile, in the embodiment, a soft buffer member is further arranged on the clamping wall surface of each of the first clamping jaw 42 and the second clamping jaw 43, and the soft buffer member can be made of rubber or silica gel and is attached to the clamping wall surface, so that when the shower head 50 is clamped by the clamp 40, the first clamping jaw 42 or the second clamping jaw 43 can be prevented from damaging the outer wall of the shower head 50.

The air blowing assembly comprises an air pump and an air blowing pipe 41, the air pump can be fixed on corresponding shower head throwing and blowing equipment and is electrically connected with the electric cabinet 11, and therefore opening and closing of the air pump can be controlled. The blowing pipe 41 is communicated with the air outlet of the air pump and is fixed through the connecting block 37, and the blowing pipe 41 can also be fixed relative to the clamp 40 because the connecting block 37 is fixedly connected with the clamp 40. Of course, the relative fixation means that the part of the blowing pipe 41 near the air outlet is fixed relative to the clamp 40, and since the blowing pipe 41 can be a hose, the rest part can be placed freely without affecting the realization of the effect. Specifically, a jack is provided on the connecting block 37, and the blowing pipe 41 can pass through the jack and be in interference fit with the jack so as to realize fixation.

After the shower head 50 is held by the first and second jaws 42 and 43 of the fixture 40, a relief portion 411 is formed therebetween, the inlet of the shower head 50 faces the relief portion 411, and the outlet of the blowpipe 41 is located in the relief portion 411 and faces the inlet of the shower head 50 after passing through the connecting block 37.

Under the control of the electric cabinet 11, the air pump can intermittently supply air to the blowing pipe 41, so as to form a pulse type air flow, which can prevent residual water in the shower head 50 from being forced to corners and improve the drainage efficiency.

When the shower head is used, the shower head 50 is fixed through the fixture 40, at the moment, the shower head 50 is positioned above the table board 13 of the machine table 10, the water receiving piece 12 is placed on the bearing plate below the table board 13, and the table board 13 is provided with a through hole for water to pass through, so that when residual water is discharged from the shower head 50, the residual water can flow into the water receiving piece 12 through the through hole; then, the electric control box 11 controls the driving member 21 and the air pump to start, so as to drive the shower head 50 to swing and ventilate the inside of the shower head 50, and discharge the residual water inside the shower head 50.

In addition, when the rotating member 33 controls the shower head 50 to swing, at the maximum swing angle position (i.e. the swing vertex) of the swing member 36, the shower head 50 will be changed from the original moving state to the stop state, and the change of the state will make the shower head 50 vibrate, so as to further drive the residual water inside the shower head 50 to move, thereby avoiding the situation of accumulation of the residual water.

The utility model provides a pair of gondola water faucet is got rid of and is blown equipment, rotate 33 rotation through driving piece 21 drive, the rethread rotates eccentric shaft 34 on the piece 33 and orders about swing 36 reciprocal swing between primary importance and second place with the cooperation of sliding tray 361 on the swing 36 to effectively improved the shower 50's with swing 36 rigid coupling swing efficiency, the subassembly of blowing is cooperated simultaneously, to shower 50 inside ventilation in shower 50 wobbling, can arrange the inside residual water of shower 50 to the greatest extent comparatively thoroughly.

The description of the above specification and examples is intended to illustrate the scope of the invention, but should not be construed as limiting the scope of the invention. Modifications, equivalents and other improvements which may be made to the embodiments of the invention or to some of the technical features thereof by a person of ordinary skill in the art through logical analysis, reasoning or limited experimentation in light of the above teachings of the invention or the above embodiments are intended to be included within the scope of the invention.

Claims (10)

1. The utility model provides a gondola water faucet is got rid of and is blown equipment, includes the frame, its characterized in that still includes:

the driving piece is arranged on the rack;

the rotating part is rotatably connected to the rack around a first axis extending horizontally, is connected with the output end of the driving part to rotate relative to the rack, and is eccentrically provided with an eccentric shaft relative to the first axis;

the swinging piece swings around a second axis parallel to the first axis and is rotatably connected to the rack, and a sliding groove extending along the swinging radial direction of the swinging piece is formed in the swinging piece;

the clamp is fixedly connected with the swinging piece and used for clamping or releasing the shower head;

the air blowing assembly is provided with an air outlet facing the water inlet of the shower head;

the eccentric shaft is inserted into the sliding groove, and when the rotating part rotates, the eccentric shaft rotates around the first axis and slides along the extending direction of the sliding groove so as to drive the swinging part, the clamp and the shower head to swing back and forth between the first position and the second position.

2. The showerhead throwing and blowing apparatus of claim 1, wherein the drive member is a servo motor having an output drivingly connected to the rotatable member for driving rotation of the rotatable member relative to the housing.

3. The showerhead blowoff apparatus of claim 2, further comprising a conveyor; the two ends of the conveying belt are respectively and tightly sleeved on the output end of the servo motor and the rotating piece.

4. The showerhead blowoff apparatus of claim 1, wherein the clamp comprises a soft buffer, a first jaw, and a second jaw; the first clamping jaw and the second clamping jaw move towards or away from each other to clamp or release the shower head; soft bolster install in first clamping jaw and second clamping jaw are used for the centre gripping the wall of gondola water faucet.

5. The showerhead blowoff apparatus of claim 4, wherein the clamp is a pneumatic clamping jaw.

6. The shower head throwing and blowing device of claim 1, further comprising a water receiving member located below the shower head during swinging of the shower head held by the holder to receive residual water discharged from the shower head.

7. The shower throwing and blowing apparatus of claim 1, wherein the blowing assembly comprises a blowing pipe; the air blowing pipe is provided with the air outlet and is fixed relative to the clamp; the air blowing pipe intermittently exhausts air.

8. The showerhead throwing and blowing apparatus of claim 7, wherein the blowing assembly further comprises an air pump; and the air outlet end of the air pump is communicated with the air blowing pipe.

9. The showerhead throwing blowing apparatus of claim 8, further comprising a connecting block; the connecting block is fixedly connected to the swinging piece; the clamp is fixedly connected to the connecting block; the air blowing pipe is fixedly connected with the connecting block so as to be fixed relative to the clamp.

10. The showerhead throwing blowing apparatus of claim 1, further comprising a swinging member rotating shaft, a first bearing and a second bearing; the first bearing outer ring is fixedly connected to the frame, and the inner ring of the first bearing outer ring is fixedly connected to the rotating piece; the rotating shaft of the swinging piece is fixedly connected to the rack and extends along the direction of a second axis; the outer ring of the second bearing is fixedly connected with the swinging piece, and the inner ring of the second bearing is fixedly connected with the rotating shaft of the swinging piece.

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