阅读说明：本技术 一种车底盘链式翻转设备 (Chassis chain tipping arrangement ) 是由 袁明才 杨宏冰 于 2021-07-29 设计创作，主要内容包括：本发明公开一种车底盘链式翻转设备,包括：翻转本体包括呈矩形阵列布置的四个翻转支撑架,两个翻转支撑架相向的两个侧壁上均设有槽体；多组气压组件分别一一对应安装于槽体内；多组减震组件分别一一对应安装于槽体内,减震组件包括相连接的第一减震机构和第二减震机构,第一减震机构与气压组件朝槽体开口一侧连接,第一减震机构协同第二减震机构以对翻转区域内晃动的车底盘进行减震；探测控制组件包括控制器和红外探测器,红外探测器用于探测车底盘晃动数据,控制器根据晃动数据控制气压组件升降气压。从而使得该车底盘链式翻转设备不仅对翻转中的车底盘进行有效的减震,还可以避免多组减震组件所占用的体积而影响待翻转的车底盘的安放。(The invention discloses a chain type turnover device for a chassis, which comprises: the overturning body comprises four overturning support frames which are arranged in a rectangular array, and two opposite side walls of the two overturning support frames are provided with groove bodies; the plurality of groups of air pressure components are respectively arranged in the groove bodies in a one-to-one correspondence manner; the multiple groups of damping assemblies are respectively installed in the groove body in a one-to-one corresponding mode, each damping assembly comprises a first damping mechanism and a second damping mechanism which are connected with each other, the first damping mechanisms are connected with the air pressure assemblies towards one side of the opening of the groove body, and the first damping mechanisms cooperate with the second damping mechanisms to damp a chassis swaying in the overturning area; the detection control assembly comprises a controller and an infrared detector, the infrared detector is used for detecting shaking data of the chassis, and the controller controls the air pressure assembly to lift according to the shaking data. Thereby make this vehicle bottom dish chain tipping arrangement not only carry out effectual shock attenuation to the vehicle bottom dish in the upset, can also avoid the shared volume of multiunit damper assembly and influence the laying of the vehicle bottom dish of treating the upset.)

1. The utility model provides a chassis chain tipping arrangement which characterized in that includes:

the overturning device comprises an overturning body, a supporting frame and a plurality of overturning groups, wherein the overturning body comprises four overturning supporting frames which are arranged in a rectangular array, an overturning area is formed between the four overturning supporting frames, a group of overturning groups is arranged between the two opposite overturning supporting frames, the number of the overturning groups is two, and two opposite side walls of the two overturning supporting frames of each group are provided with groove bodies;

the plurality of groups of air pressure components are respectively installed in the groove bodies in a one-to-one correspondence manner;

the plurality of groups of damping assemblies are respectively installed in the groove bodies in a one-to-one correspondence mode, each damping assembly comprises a first damping mechanism and a second damping mechanism which are connected with each other, the first damping mechanisms are connected with the air pressure assemblies towards one side of the opening of the groove body and are in sliding connection with the groove body, and the first damping mechanisms cooperate with the second damping mechanisms to damp a chassis swaying in the turnover area;

the detection control assembly comprises a controller and an infrared detector, the controller is electrically connected with the infrared detector and the air pressure assembly, the infrared detector is used for detecting shaking data of a chassis, and the controller controls the air pressure assembly to lift air pressure according to the shaking data;

before the air pressure assembly is boosted, each group of damping assemblies are located in the groove body, after the air pressure assembly is depressurized, the decompression position of each group of damping assemblies slides out of the groove body to damp the chassis swaying in the overturning area.

2. The chassis chain type turnover device of claim 1,

the air pump is used for lifting air pressure of the air pressure assemblies.

3. The chassis chain type turnover device of claim 2,

the pneumatic assembly comprises a plurality of groups of air bags, each group of air bags are correspondingly arranged in the groove body, the first damping mechanism is communicated with one side of the opening of the groove body, and the output end of the air pump is connected with the plurality of groups of air bags.

4. The chassis chain type turnover device of claim 2,

the pneumatic assembly comprises a cylinder body and a movable plug body, the movable plug body faces towards the opening direction of the tank body and is in piston type sliding connection with the cylinder body, the output end of the air pump is connected with one side, away from the opening of the tank body, of the cylinder body in a connected mode so as to be opposite to the lifting air pressure of the pneumatic cavity of the cylinder body, and the movable plug body is close to one side, open to the tank body, of the tank body and connected with the first damping mechanism.

5. The chassis chain type turnover device of claim 1,

the first damping mechanism comprises a bottom plate, a bearing plate and an elastic piece, one side of the bottom plate is connected with the air pressure assembly towards one side of the groove body notch, the other side of the bottom plate is arranged at intervals with the bearing plate and is elastically connected with the bearing plate through the elastic piece, and a damping area is formed between the bottom plate and the bearing plate;

the second damping mechanism is arranged in the damping area and comprises a damping plate and two groups of permanent magnets, the damping plate is fixedly connected with the bottom plate, the two groups of permanent magnets are fixedly arranged on the damping plate and the bearing plate respectively and correspond to each other, and the two groups of permanent magnets are mutually exclusive, so that the bearing plate and the damping plate are mutually exclusive.

6. The chassis chain type turnover device of claim 5,

one of them is a set of the permanent magnet be annular array arrange in on the shock attenuation board, another group the permanent magnet be annular array arrange in on the bearing plate, and two sets of one-to-one sets up between the permanent magnet.

7. The chassis chain type turnover device of claim 6,

arrange in on the shock attenuation board a set of the permanent magnet with correspond the shock attenuation board towards one side cooperation embedding of bearing plate is connected, another group the permanent magnet with the bearing plate is towards one side cooperation embedding of shock attenuation board is connected.

8. The chassis chain type turnover device of claim 5,

and a rubber pad is arranged on one side of the bearing plate towards the opening direction of the groove body.

9. The chassis chain type turnover device of claim 5,

the elastic piece is one of an elastic piece, a rubber spring, an air spring and a spiral spring.

10. The chassis chain type turnover device of claim 5,

every be equipped with a plurality of cell bodies on the upset support frame, the interval sets up between a plurality of cell bodies, and every the cell body all is hollow column, the bottom plate with the face of bearing plate is circular.

Technical Field

The invention relates to the technical field of turnover equipment, in particular to chain type turnover equipment for a chassis of a vehicle.

Background

In the field of automobile manufacturing, parts are required to be assembled together, and finally, finished products of automobiles can be formed. When the chassis of the automobile is assembled, the automobile chassis is large in size and heavy in weight, and a turnover device is required on an automobile chassis assembly line.

The chain type tilter of the telescopic arm of the turnover crane disclosed in the publication No. CN 202147111U is characterized in that the included angle of the upper chain for placing the telescopic arm is adjusted, so that the telescopic arms with different sizes have higher stability when being turned, but the chassis is turned over, because the position of the chassis frame connected with two chain belt pockets is easy to deviate, the chassis frame can generate gravity center deviation in the turning process, the chassis frame is seriously shaken in the turning process, the chassis on the chain belt is shaken to enable a driving device to be damaged, even when the radian is large, the chassis chain type tilter impacts a support frame, damage is caused to the chassis chain type tilter, and the life safety of field operators is threatened.

Disclosure of Invention

In view of the above, it is desirable to provide a chain type turnover device for a vehicle chassis, which solves the above problems.

According to an aspect of the present invention, there is provided a vehicle chassis chain type turnover apparatus including:

the overturning device comprises an overturning body, a supporting frame and a plurality of overturning groups, wherein the overturning body comprises four overturning supporting frames which are arranged in a rectangular array, an overturning area is formed between the four overturning supporting frames, a group of overturning groups is arranged between the two opposite overturning supporting frames, the number of the overturning groups is two, and two opposite side walls of the two overturning supporting frames of each group are provided with groove bodies;

the plurality of groups of air pressure components are respectively installed in the groove bodies in a one-to-one correspondence manner;

the plurality of groups of damping assemblies are respectively installed in the groove bodies in a one-to-one correspondence mode, each damping assembly comprises a first damping mechanism and a second damping mechanism which are connected with each other, the first damping mechanisms are connected with the air pressure assemblies towards one side of the opening of the groove body and are in sliding connection with the groove body, and the first damping mechanisms cooperate with the second damping mechanisms to damp a chassis swaying in the turnover area;

the detection control assembly comprises a controller and an infrared detector, the controller is electrically connected with the infrared detector and the air pressure assembly, the infrared detector is used for detecting shaking data of a chassis, and the controller controls the air pressure assembly to lift air pressure according to the shaking data;

before the air pressure assembly is boosted, each group of damping assemblies are located in the groove body, after the air pressure assembly is depressurized, the decompression position of each group of damping assemblies slides out of the groove body to damp the chassis swaying in the overturning area.

According to some embodiments, the air pump is further included, an output end of the air pump is connected with the multiple groups of air pressure assemblies, and the air pump is used for lifting air pressure of the multiple groups of air pressure assemblies.

According to some embodiments, the air pressure assembly comprises a plurality of groups of air bags, each group of air bags are correspondingly arranged in the groove body respectively, the first damping mechanism is communicated with the air bags towards one side of the opening of the groove body, and the output end of the air pump is connected with the plurality of groups of air bags.

According to some embodiments, the pneumatic assembly comprises a cylinder body and a movable plug body, the movable plug body is in piston type sliding connection with the cylinder body towards the opening direction of the groove body, the output end of the air pump is connected with one side, deviating from the opening direction of the groove body, of the cylinder body so as to lift air pressure of an air pressure cavity of the cylinder body, and one side, close to the opening direction of the groove body, of the movable plug body is connected with the first damping mechanism.

According to some embodiments, the first damping mechanism comprises a bottom plate, a pressure bearing plate and an elastic member, one side of the bottom plate is connected with the air pressure assembly towards one side of the groove body notch, the other side of the bottom plate is arranged at an interval with the pressure bearing plate and is elastically connected with the pressure bearing plate through the elastic member, and a damping area is formed between the bottom plate and the pressure bearing plate;

the second damping mechanism is arranged in the damping area and comprises a damping plate and two groups of permanent magnets, the damping plate is fixedly connected with the bottom plate, the two groups of permanent magnets are fixedly arranged on the damping plate and the bearing plate respectively and correspond to each other, and the two groups of permanent magnets are mutually exclusive, so that the bearing plate and the damping plate are mutually exclusive.

According to some embodiments, one group of the permanent magnets are arranged on the damping plate in an annular array, the other group of the permanent magnets are arranged on the bearing plate in an annular array, and the two groups of the permanent magnets are arranged in a one-to-one correspondence manner.

According to some embodiments, one group of the permanent magnets is in fit-fit embedded connection with one side of the corresponding damping plate facing the bearing plate, and the other group of the permanent magnets is in fit-fit embedded connection with one side of the bearing plate facing the damping plate.

According to some embodiments, a rubber pad is arranged on one side of the bearing plate towards the opening direction of the groove body.

According to some embodiments, the elastic member is one of a leaf spring, a rubber spring, an air spring, and a coil spring.

According to some embodiments, each overturning support frame is provided with a plurality of groove bodies, the groove bodies are arranged at intervals and are hollow columnar, and the bottom plate and the bearing plate are circular.

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

this chassis chain tipping arrangement starts when overturning the chassis, and the atmospheric pressure subassembly of every group of cell body of controller control risees atmospheric pressure for the regional volume grow of atmospheric pressure subassembly, slides towards cell body opening direction in the cell body with the shock-absorbing component that promotes to be connected with the atmospheric pressure subassembly, makes shock-absorbing component's shock attenuation position roll-off cell body, and the chassis that rocks that contacts in order to overturn the region through first damper in coordination with second damper carries out effectual shock attenuation. Along with this vehicle bottom dish chain tipping arrangement continues the shock attenuation to rocking the vehicle bottom dish, infrared detector detects the vehicle bottom dish and rocks the range and reduce to predetermineeing the scope after, controller control atmospheric pressure subassembly reduces atmospheric pressure, and atmospheric pressure volume change area reduces, and the damper connected with the atmospheric pressure subassembly slides and contracts to the cell body in. Thereby make this vehicle bottom dish chain tipping arrangement not only carry out effectual shock attenuation to the vehicle bottom dish in the upset, avoid drive arrangement impaired, can also avoid the shared volume of multiunit damper and influence the laying of the vehicle bottom dish of treating the upset.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a three-dimensional structure of a turnover support frame of a chassis chain type turnover device provided by the invention;

FIG. 2 is a schematic partial enlarged structural view of a chain type turnover device of a chassis provided by the invention;

FIG. 3 is a schematic perspective view of a chain type turnover device for a vehicle chassis provided by the present invention;

fig. 4 is a schematic structural view of an embodiment of a chain type turnover device for a chassis provided by the invention;

fig. 5 is a schematic structural diagram of another embodiment of the chassis chain type turnover device provided by the invention.

In the figure: the overturning device comprises an overturning body 100, an overturning support frame 110, a groove body 111, an air pressure assembly 200, an air bag 210, a cylinder body 220, a movable plug body 230, a damping assembly 300, a first damping mechanism 310, a bottom plate 311, a pressure bearing plate 312, an elastic piece 313, a second damping mechanism 320, a damping plate 321, a permanent magnet 322, a detection control assembly 400, a controller 410 and an infrared detector 420.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, the present invention provides a chain type vehicle chassis turnover device, which includes a turnover body 100, a plurality of sets of pneumatic assemblies 200, a plurality of sets of damping assemblies 300, and a detection control assembly 400, wherein the plurality of sets of pneumatic assemblies 200 and the plurality of sets of damping assemblies 300 are mounted on the turnover body 100, and the detection control assembly 400 controls the plurality of sets of pneumatic assemblies 200 to push the damping assemblies 300 to appropriate positions according to sway data measured during a turnover process of the vehicle chassis to damp both sides of the vehicle chassis during the turnover process.

The turnover body 100 includes four turnover supports 110 arranged in a rectangular array, a turnover area is formed between the four turnover supports 110, a set of turnover groups is arranged between two opposite turnover supports 110, the turnover groups are two sets in total, and two opposite side walls of the two turnover supports 110 of each set of turnover groups are provided with groove bodies 111.

The plurality of sets of air pressure assemblies 200 are respectively installed in the groove body 111 in a one-to-one correspondence manner, the air pressure assemblies 200 can be placed in the groove body 111 or fixedly connected with the inner wall of the groove body 111, and when the air pressure assemblies 200 are placed in the groove body 111, a limiting groove can be arranged in the groove body 111, so that the air pressure assemblies 200 are limited in the limiting groove.

The multiple groups of damping assemblies 300 are respectively installed in the groove body 111 in a one-to-one correspondence mode, each damping assembly 300 comprises a first damping mechanism 310 and a second damping mechanism 320 which are connected, the first damping mechanisms 310 are connected with the air pressure assembly 200 towards one side of an opening of the groove body 111, the first damping mechanisms 310 are connected with the groove body 111 in a sliding mode, and the first damping mechanisms 310 and the second damping mechanisms 320 are used for damping the chassis swaying in the overturning area in a cooperation mode.

The detection control assembly 400 comprises a controller 410 and an infrared detector 420, the controller 410 is electrically connected with the infrared detector 420 and the air pressure assembly 200, the infrared detector 420 is used for detecting shaking data of the chassis, and the controller 410 controls the air pressure assembly 200 to lift air pressure according to the shaking data. And the infrared detector 420 may be mounted on top of one of the flip holders 110.

The air pressure volume change area of each set of air pressure assembly 200 can be configured such that each set of shock absorption assembly 300 is located in the tank body 111 before the air pressure assembly 200 is inflated; after the air pressure assembly 200 is inflated, the air pressure assembly 200 expands to push the shock absorption assemblies 300 to slide in the groove body 111 towards the opening direction of the groove body 111, so that the shock absorption part of each group of shock absorption assemblies 300 slides out of the groove body 111 to absorb shock of a chassis in a turning area.

In the above scheme, when this vehicle chassis chain tipping arrangement starts to overturn the vehicle chassis, controller 410 controls the atmospheric pressure subassembly 200 of every group cell body 111 in and rises atmospheric pressure, make the regional volume grow of atmospheric pressure subassembly 200, slide towards cell body 111 opening direction in cell body 111 with the shock attenuation subassembly 300 that promotes to be connected with atmospheric pressure subassembly 200, make the shock attenuation position roll-off cell body 111 of shock attenuation subassembly 300, shake the vehicle chassis in order to contact in the region of overturning and carry out the shock attenuation through first damper 310 in coordination with second damper 320. Along with this vehicle bottom dish chain tipping arrangement continues the shock attenuation to rocking vehicle bottom dish, infrared detector 420 detects the vehicle bottom dish and rocks the range and reduce to predetermineeing the back, and controller 410 control atmospheric pressure subassembly 200 reduces atmospheric pressure, and atmospheric pressure volume change area reduces, and the damper 300 who is connected with atmospheric pressure subassembly 200 slides and contracts to the cell body 111 in. Thereby make this vehicle bottom dish chain tipping arrangement not only carry out effectual shock attenuation to the vehicle bottom dish in the upset, avoid drive arrangement impaired, can also avoid the shared volume of multiunit damper 300 and influence the laying of the vehicle bottom dish of treating the upset.

According to some embodiments, the chassis chain-type flipping unit further includes an air pump (not shown in the drawings), an output end of the air pump is connected to the plurality of sets of air pressure assemblies 200, and the air pump is used for increasing or decreasing air pressure to the plurality of sets of air pressure assemblies 200. When the decompression position of the shock absorption assembly 300 needs to slide out of the groove body 111 to absorb shock of a chassis swaying in the overturning area, the air pump boosts the pressure of the plurality of groups of air pressure assemblies 200. In order to avoid the influence of the occupied volume of the multiple groups of shock absorption assemblies 300 on the placement of the chassis to be overturned, the controller 410 controls the pressure reduction assembly to reduce the pressure of the air pressure assembly 200 according to the chassis shaking data detected by the infrared detector 420, so that the shock absorption assemblies 300 are contracted and slide into the groove body 111.

As shown in fig. 2, according to some embodiments, the first shock absorbing mechanism 310 includes a bottom plate 311, a pressure bearing plate 312, and an elastic member 313, wherein one side of the bottom plate 311 is connected to one side of the slot 111 facing the air pressure assembly 200, the other side is spaced from the pressure bearing plate 312 and is elastically connected to the pressure bearing plate 312 through the elastic member 313, and a shock absorbing region is formed between the bottom plate 311 and the pressure bearing plate 312. The second damping mechanism 320 is disposed in the damping region, the second damping mechanism 320 includes a damping plate 321 and two sets of permanent magnets 322, the damping plate 321 is fixedly connected to the bottom plate 311, the two sets of permanent magnets 322 are respectively and correspondingly fixedly mounted on the damping plate 321 and the bearing plate 312, and the two sets of permanent magnets 322 are mutually exclusive, so that the bearing plate 312 and the damping plate 321 are mutually exclusive. When the chassis that rocks carries out the shock attenuation through first damper 310 in coordination with second damper 320, the chassis that rocks and bearing plate 312 butt, and the elastic component 313 that sets up between bottom plate 311 and the bearing plate 312 is to the chassis that rocks shock attenuation. Further, mutual exclusion between the permanent magnet 322 on the shock attenuation board 321 in the shock attenuation region and the permanent magnet 322 on the bearing plate 312 is in order to carry out the secondary shock attenuation to the loading board, meanwhile, the weak magnetic force of the permanent magnet 322 on the bearing plate 312 also can play the shock attenuation effect to the vehicle chassis that rocks to through first damper 310 in coordination with second damper 320 in order to last effectual shock attenuation to the vehicle chassis that rocks that contacts in the turnover region, make damper 300's shock attenuation effect more obvious.

The elastic member 313 is one of a spring plate, a rubber spring, an air spring, and a coil spring.

According to some embodiments, in order to achieve a better damping effect of the two groups of permanent magnets 322, one group of permanent magnets 322 is arranged on the damping plate 321 in an annular array, the other group of permanent magnets 322 is arranged on the bearing plate 312 in an annular array, and the two groups of permanent magnets 322 are arranged in a one-to-one correspondence manner. The ring shape can be a circular ring or a long circular ring.

And one group of permanent magnets 322 arranged on the damping plate 321 is in fit and embedded connection with one side of the corresponding damping plate 321 facing the bearing plate 312, and the other group of permanent magnets 322 is in fit and embedded connection with one side of the bearing plate 312 facing the damping plate 321. The connection mode of the matching embedding connection can be that one opposite side of the damping plate 321 and the bearing plate 312 is provided with grooves arranged in an annular array, each permanent magnet 322 is in clearance fit with the groove, and the permanent magnets 322 can be fixedly installed in the grooves in a gluing mode or in a threaded connection and fixed installation with the grooves.

According to some embodiments, a rubber pad (not shown in the figures) is arranged on one side of the bearing plate 312 facing the opening direction of the tank body 111, so that when the swaying chassis impacts the bearing plate 312, the rubber pad plays a role in buffering, the shock absorption effect of the shock absorption assembly 300 can be more effective, and meanwhile, the effect of reducing the noise of the impacting chassis can be played.

As shown in fig. 4, the present invention provides an embodiment of an air pressure assembly 200, wherein the air pressure assembly 200 includes a plurality of sets of air bags 210, each set of air bags 210 is correspondingly installed in the slot 111, the first damping mechanism 310 is connected to one side of the air bags 210 opening toward the slot 111, and an output end of the air pump is connected to the plurality of sets of air bags 210 to lift the plurality of sets of air bags 210, so that the damping assembly 300 can slide in the slot 111 of the roll-over stand 110.

As shown in fig. 5, the present invention further provides an embodiment of an air pressure assembly 200, wherein the air pressure assembly 200 includes a cylinder 220 and a movable plug 230, the movable plug 230 is slidably connected to the cylinder 220 in a piston manner in a direction toward the opening of the tank 111, an output end of an air pump is communicated with one side of the cylinder 220 away from the opening of the tank 111 to lift an air pressure chamber of the cylinder 220, and in addition, one side of the movable plug 230 close to the opening of the tank 111 is connected to a first damping mechanism 310, so that a volume of the air pressure chamber changes to push the movable plug 230 to move in the cylinder 220, thereby driving the first damping mechanism 310 to cooperate with a pressure reducing portion of a second damping mechanism 320 to slide out of the tank 111, so as to damp a chassis during a turnover process, so as to prevent the chassis from directly striking the turnover support frame 110, thereby causing damage to a chain turnover device of the chassis.

According to some embodiments, in order to make the shock absorption effect of the shock absorption assembly 300 more obvious, a plurality of groove bodies 111 are arranged on each overturning support frame 110, the plurality of groove bodies 111 are arranged at intervals, each groove body 111 is in a hollow column shape, and the plate surfaces of the bottom plate 311 and the bearing plate 312 are circular, so that the plurality of shock absorption assemblies 300 cooperate with each other to absorb shock of a chassis swaying in an overturning area.

The working principle is as follows: this chassis chain tipping arrangement starts when overturning the vehicle chassis, the atmospheric pressure subassembly 200 of controller 410 control in every group cell body 111 risees atmospheric pressure, make the regional volume grow of atmospheric pressure subassembly 200, slide towards cell body 111 opening direction in cell body 111 with the shock attenuation subassembly 300 that promotes to be connected with atmospheric pressure subassembly 200, make the shock attenuation position roll-off cell body 111 of shock attenuation subassembly 300, through first damper 310 in coordination with second damper 320 in order to carry out effectual shock attenuation with the rocking vehicle chassis that contacts in the upset region. Along with this vehicle bottom dish chain tipping arrangement continues the shock attenuation to rocking vehicle bottom dish, infrared detector 420 detects the vehicle bottom dish and rocks the range and reduce to predetermineeing the back, and controller 410 control atmospheric pressure subassembly 200 reduces atmospheric pressure, and atmospheric pressure volume change area reduces, and the damper 300 who is connected with atmospheric pressure subassembly 200 slides and contracts to the cell body 111 in. Thereby make this vehicle bottom dish chain tipping arrangement not only carry out effectual shock attenuation to the vehicle bottom dish in the upset, avoid drive arrangement impaired, can also avoid the shared volume of multiunit damper 300 and influence the laying of the vehicle bottom dish of treating the upset.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.