阅读说明：本技术 移动运输装置 (Mobile transportation device ) 是由 吴云飞 吕升锋 王建文 刘子雄 袁丹 于 2021-09-10 设计创作，主要内容包括：本发明涉及一种移动运输装置,用于运输盖板,包括至少两个呈平行设置的滑轨组件、多个支架、传动组件以及驱动机构；每一滑轨组件滑动设置有至少一个支架；传动组件包括至少两个平移同步带,每一平移同步带对应于一个滑轨组件且沿着滑轨组件的轨道方向设置,支架固设于平移同步带。上述移动运输装置,通过支架固设于对应的平移同步带,以使得同一平移同步带上的各支架之间的相对位置不会发生改变；又由于各平移同步带由同一驱动机构驱动,即各平移同步带的传动效率相同,以使得不同平移同步带上的各支架之间的相对位置不会发生改变,从而增加各支架之间同步度,达到增加盖板的运输准确度的效果。(The invention relates to a mobile conveying device which is used for conveying a cover plate and comprises at least two sliding rail assemblies, a plurality of supports, a transmission assembly and a driving mechanism, wherein the sliding rail assemblies are arranged in parallel; each sliding rail component is provided with at least one bracket in a sliding way; the transmission assembly comprises at least two translation synchronous belts, each translation synchronous belt is arranged corresponding to one sliding rail assembly and along the rail direction of the sliding rail assembly, and the support is fixedly arranged on the translation synchronous belts. The movable conveying device is fixedly arranged on the corresponding translation synchronous belt through the brackets, so that the relative position between the brackets on the same translation synchronous belt cannot be changed; and because each translation synchronous belt is driven by the same driving mechanism, namely the transmission efficiency of each translation synchronous belt is the same, the relative position between each support on different translation synchronous belts can not be changed, thereby increasing the synchronism between each support and achieving the effect of increasing the transportation accuracy of the cover plate.)

1. A mobile transportation device is used for transporting a cover plate (200), and is characterized by comprising at least two sliding rail assemblies (10) which are arranged in parallel, a plurality of brackets (30), a transmission assembly (20) and a driving mechanism (40);

each slide rail component (10) is provided with at least one bracket (30) in a sliding way;

the transmission assembly (20) comprises at least two translation synchronous belts (21), each translation synchronous belt (21) corresponds to one slide rail assembly (10) and is arranged along the track direction of the slide rail assembly (10), and the support (30) is fixedly arranged on the translation synchronous belt (21);

the driving mechanism (40) is arranged on the sliding rail assembly (10) and used for driving at least two translation synchronous belts (21) to perform synchronous transmission so as to drive the support (30) to slide along the rail direction of the sliding rail assembly (10).

2. The mobile transportation unit of claim 1, wherein each of the skid assemblies (10) is slidably provided with at least two of the brackets (30).

3. The mobile transportation apparatus according to claim 1, wherein the rail assembly (10) comprises at least two rails (11) arranged in parallel, and the bracket (30) is slidably connected to each rail (11) in the corresponding rail assembly (10).

4. The mobile transportation unit according to claim 1, characterized in that the carriages (30) within the same transmission assembly (20) are arranged at equal intervals.

5. The mobile transportation device according to claim 1, wherein the transmission assembly (20) comprises fixing seats (22) disposed at two ends of the corresponding slide rail assembly (10), each fixing seat (22) is rotatably connected with a translational synchronizing wheel (23), and the translational synchronizing belt (21) is disposed on two translational synchronizing wheels (23) corresponding to the transmission assembly (20).

6. The mobile transport apparatus according to claim 1, wherein the drive mechanism (40) comprises a motor (41), a reduction assembly (42), and a drive shaft (43), the drive shaft (43) is connected with an output shaft of the reduction assembly (42) and is used for driving each of the translational timing belts (21), and an input shaft of the reduction assembly (42) is connected with an output shaft of the motor (41) and is used for increasing an output torque of the motor (41).

7. The mobile transportation device of claim 6, wherein the driving mechanism (40) further comprises a driving timing belt (44) and two driving timing wheels (45), the two driving timing wheels (45) are respectively disposed on the driving shaft (43) and the output shaft of the speed reduction assembly (42), and the driving timing belt (44) is disposed on the two driving timing wheels (45).

8. The mobile transportation apparatus according to claim 7, wherein the driving mechanism (40) further comprises a fixing plate (46), an adjusting plate (47) and an adjusting assembly (48), the fixing plate (46) is fixed relative to the slide rail assembly (10), the adjusting plate (47) is disposed on the fixing plate (46) through the adjusting assembly (48), the motor (41) is disposed on the adjusting plate (47), and the adjusting assembly (48) is used for adjusting the relative position of the adjusting plate (47) and the fixing plate (46).

9. The mobile transportation device according to claim 1, wherein each of the supports (30) is provided with a jacking assembly (50), and the jacking assembly (50) is used for carrying the cover plate (200) and driving the cover plate (200) to lift.

10. The mobile transportation device of claim 9, wherein the jacking assembly (50) comprises a support plate (51) and a driving member (52), the driving member (52) is fixedly arranged on the support (30) and is used for driving the support plate (51) to move up and down, and the support plate (51) is provided with support grooves (511) corresponding to the support rods (201) of the cover plate (200).

Technical Field

The invention relates to transportation equipment, in particular to a mobile transportation device.

Background

When the cover plate is transported, in order to reduce labor cost and ensure stable transportation, a corresponding moving device is usually used for transporting the movable cover plate;

because the cover plate has larger mass, in order to ensure that the cover plate can keep stable when the movable cover plate is transported by the moving device, the existing moving device is mostly provided with a plurality of supporting blocks, and the stability of the cover plate is ensured by a mode of multipoint contact with the cover plate;

however, most of such methods need to provide a plurality of power sources to drive the movement of each supporting block, and the plurality of power sources are difficult to maintain at a high synchronization degree, so that the placement position of the cover plate is easily shifted due to different movement rates or movement strokes of the supporting blocks, and the transportation accuracy of the cover plate is low.

Disclosure of Invention

Therefore, it is necessary to provide a mobile transportation device capable of transporting a cover plate synchronously and stably through a plurality of supporting points, aiming at the problem that the cover plate is easy to shift because the plurality of supporting points cannot move synchronously when the cover plate with large mass is transported.

A mobile conveying device is used for conveying cover plates and comprises at least two sliding rail assemblies, a plurality of supports, a transmission assembly and a driving mechanism, wherein the sliding rail assemblies are arranged in parallel; each sliding rail assembly is provided with at least one bracket in a sliding manner; the transmission assembly comprises at least two translation synchronous belts, each translation synchronous belt corresponds to one sliding rail assembly and is arranged along the rail direction of the sliding rail assembly, and the support is fixedly arranged on the translation synchronous belt; the driving mechanism is arranged on the sliding rail assembly and used for driving at least two synchronous transmission of the translation synchronous belts so as to drive the support to slide along the rail direction of the sliding rail assembly.

The movable conveying device is fixedly arranged on the corresponding translation synchronous belt through the brackets, so that the relative position between the brackets on the same translation synchronous belt cannot be changed; and because each translation synchronous belt is driven by the same driving mechanism, namely the transmission efficiency of each translation synchronous belt is the same, so that the relative position between the brackets on different translation synchronous belts can not be changed, thereby increasing the synchronism between the brackets, reducing or even avoiding the possibility of the displacement of the placing position of the cover plate in the transportation process, and achieving the effect of increasing the transportation accuracy of the cover plate.

In one embodiment, each of the slide rail assemblies is slidably provided with at least two brackets.

So set up to make apron and each slide rail set spare be the multiple spot contact, cooperate a plurality of slide rail set spares simultaneously, increased the quantity of the strong point of apron, reach the effect that further increases the transportation stability of apron.

In one embodiment, the slide rail assembly includes at least two slide rails arranged in parallel, and the bracket is slidably connected to each slide rail in the corresponding slide rail assembly.

So set up to increase support and sliding rail set spare sliding connection's area of contact, thereby increased the sliding stability of support, reached the effect that further increases apron transportation stability.

In one embodiment, the brackets in the same transmission assembly are arranged at equal intervals.

So set up to make the equidistant distribution of contact point between support and the apron on the same translation hold-in range, thereby make the distribution of the contact point of apron and each support relatively even, thereby increase the support stability of support to the apron.

In one embodiment, the transmission assembly includes fixing seats disposed at two ends of the corresponding slide rail assembly, each of the fixing seats is rotatably connected with a translational synchronizing wheel, and the translational synchronizing wheels are disposed on two translational synchronizing wheels corresponding to the transmission assembly.

In one embodiment, the driving mechanism includes a motor, a speed reduction assembly, and a driving shaft connected to an output shaft of the speed reduction assembly and used for driving each of the translational synchronous belts, and an input shaft of the speed reduction assembly is connected to an output shaft of the motor and used for increasing an output torque of the motor.

So set up, reduce the output rotational speed of motor and increase the output moment of torsion of motor through the speed reduction subassembly to required moment of torsion and rotational speed adaptation when making the epaxial moment of torsion and rotational speed of drive and transportation apron.

In one embodiment, the driving mechanism further includes a driving synchronous belt and two driving synchronous wheels, the two driving synchronous wheels are respectively disposed on the driving shaft and the output shaft of the speed reducing assembly, and the driving synchronous belt is disposed on the two driving synchronous wheels.

In one embodiment, the driving mechanism further comprises a fixing plate, an adjusting plate and an adjusting component, the fixing plate is relatively fixed to the sliding rail component, the adjusting plate is arranged on the fixing plate through the adjusting component, the motor is arranged on the adjusting plate, and the adjusting component is used for adjusting the relative position of the adjusting plate and the fixing plate.

So set up to make can adjust the interval of regulating plate and fixed plate through adjusting part, and then adjust the distance between two drive synchronizing wheels, realize the regulation to drive hold-in range tensioning degree, increased the general usefulness of device.

In one embodiment, each support is provided with a jacking assembly, and the jacking assembly is used for bearing the cover plate and driving the cover plate to lift.

So set up, drive the apron through jacking subassembly and go up and down, the cooperation support slides along slide rail set spare and drives the apron translation, can realize the apron at the removal of two orientations under.

In one embodiment, the jacking assembly includes a supporting plate and a driving member, the driving member is fixedly disposed on the bracket and is used for driving the supporting plate to move up and down, and the supporting plate is provided with a supporting groove corresponding to the supporting rod of the cover plate.

So set up, can hold the bracing piece of apron through supporting the groove to the realization is spacing to the bracing piece, places the stability behind the backup pad with increasing the apron, increases the stability of apron in the transportation.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is an enlarged schematic view of a portion B in fig. 1.

Description of the main elements

10. A slide rail assembly; 11. a slide rail; 121. a sensor; 122. a sensor rail; 20. a transmission assembly; 21. translating the synchronous belt; 22. a fixed seat; 23. a translation synchronizing wheel; 30. a support; 31. an induction sheet; 40. a drive mechanism; 41. a motor; 42. a speed reduction assembly; 43. a drive shaft; 44. driving a synchronous belt; 45. driving a synchronizing wheel; 46. a fixing plate; 47. an adjusting plate; 48. an adjustment assembly; 50. a jacking assembly; 51. a support plate; 511. a support groove; 52. a drive member;

200. a cover plate; 201. a support rod.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The present invention provides a mobile transportation device for transporting a cover plate 200, as shown in fig. 1 and fig. 2, including at least two sliding rail assemblies 10 arranged in parallel, a plurality of brackets 30, a transmission assembly 20 and a driving mechanism 40; each slide rail component 10 is provided with at least one bracket 30 in a sliding way; the transmission assembly 20 comprises at least two translational synchronous belts 21, each translational synchronous belt 21 corresponds to one sliding rail assembly 10 and is arranged along the rail direction of the sliding rail assembly 10, and the support 30 is fixedly arranged on the translational synchronous belt 21; the driving mechanism 40 is disposed on the slide rail assembly 10 and configured to drive the at least two synchronous translation belts 21 to perform synchronous transmission, so as to drive the bracket 30 to slide along the rail direction of the slide rail assembly 10.

The support 30 is used for supporting the cover plate 200, because the support 30 is slidably disposed on the slide rail assemblies 10, the cover plate 200 can be simultaneously supported by at least two slide rail assemblies 10 through at least two slide rail assemblies 10 disposed in parallel, and because each slide rail assembly 10 is slidably disposed with at least one support 30, the cover plate 200 can be simultaneously supported by two points provided by the two supports 30, so as to ensure the stability of the cover plate 200 with large mass in the transportation process.

Slide through support 30 and set up in sliding rail set 10 for support 30 can slide along sliding rail set 10's track direction, and the cooperation sets firmly support 30 in the translation hold-in range 21 that sets up along sliding rail set 10's track direction, thereby makes translation hold-in range 21 can drive support 30 and set up in the apron 200 of support 30 along sliding rail set 10's track direction translation, in order to realize the transportation to apron 200.

Because the brackets 30 are fixedly arranged on the corresponding translation synchronous belts 21, the relative position between the brackets 30 on the same translation synchronous belt 21 cannot be changed; and because each translation synchronous belt 21 is driven by the same driving mechanism 40, the transmission efficiency of each translation synchronous belt 21 is the same, that is, the moving distance of the bracket 30 fixedly arranged on each translation synchronous belt 21 is the same after working for the same time, so that the relative position between the brackets 30 on different translation synchronous belts 21 can not be changed, thereby increasing the synchronism between the brackets 30, reducing or even avoiding the possibility of the displacement of the placing position of the cover plate 200 in the transportation process, and achieving the effect of increasing the transportation accuracy of the cover plate 200.

In the embodiment shown in fig. 1, each of the slide rail assemblies 10 is slidably disposed with at least two brackets 30, that is, each of the slide rail assemblies 10 supports the cover plate 200 through at least two brackets 30, so that the cover plate 200 and each of the slide rail assemblies 10 are in multi-point contact, and the cover plate 200 is supported by matching with a plurality of slide rail assemblies 10, thereby increasing the number of supporting points of the cover plate 200 and achieving the effect of further increasing the transportation stability of the cover plate 200.

Referring to fig. 1, the slide rail assembly 10 includes at least two slide rails 11 arranged in parallel, the bracket 30 is connected to each slide rail 11 in the corresponding slide rail assembly 10 in a sliding manner, and compared with the case where only a single slide rail 11 is arranged on each slide rail assembly 10, the contact area between the bracket 30 and the slide rail assembly 10 in the sliding manner is increased, so that the sliding stability of the bracket 30 is increased, and the effect of further increasing the transportation stability of the cover plate 200 is achieved.

The relative position relation between the slide rail 11 of many parallel arrangement in this application to each slide rail set 10 and the translation hold-in range 21 that corresponds does not restrict as long as can satisfy support 30 and the equal sliding connection of each slide rail 11 that corresponds, and with translation hold-in range 21 fixed connection that corresponds can. In the embodiment shown in fig. 1, each slide rail assembly 10 includes two slide rails 11 arranged in parallel, and the corresponding synchronous translation belt 21 is located between the two slide rails 11.

With continued reference to FIG. 1, the brackets 30 within the same drive assembly 20 are equally spaced. The equal spacing arrangement here means that the brackets 30 on the same synchronous translation belt 21 are arranged along the track direction of the slide rail assembly 10, and the spacing between every two adjacent brackets 30 is equal.

Through setting up the equidistant setting of support 30 on the same translation hold-in range 21, can guarantee the equidistant distribution of the contact point between support 30 and the apron 200 on the same translation hold-in range 21 to make the distribution of the contact point of apron 200 and each support 30 relatively even, thereby increase the support stability of support 30 to apron 200.

Preferably, the adjacent brackets 30 on different transmission assemblies 20 are equally spaced, so as to further increase the distribution uniformity of the contact points between the cover plate 200 and each bracket 30.

The number of the brackets 30 on each translational synchronous belt 21 can be adaptively adjusted according to factors such as the shape of the cover plate 200, the mass of the cover plate 200, and the distance between adjacent brackets 30, as long as the cover plate 200 can be stably placed on each bracket 30.

In the embodiment shown in fig. 1, the cover plate 200 to be transported is rectangular, and in this case, two sets of transmission assemblies 20 are provided, and each transmission assembly 20 is provided with two brackets 30, so that four brackets 30 support the cover plate 200 together, and the contact points between the four brackets 30 and the cover plate 200 are also rectangular, so as to ensure that the rectangular cover plate 200 can be uniformly supported.

When the cover plate 200 has a longer length along the rail direction of the slide rail assembly 10, the bracket 30 may be added to each transmission assembly 20 to ensure that the cover plate 200 can be sufficiently supported. Preferably, the brackets 30 on each transmission assembly 20 are equally spaced.

When the width of the cover plate 200 is long, the cover plate 200 can be sufficiently supported by adding the transmission assembly 20 and the corresponding slide rail assembly 10. Preferably, the transmission assemblies 20 are arranged at equal intervals.

In the embodiment shown in fig. 1 and 2, each slide rail 11 is provided with at least two sensor rails 122, the sensor rails 122 are arranged along the arrangement direction of the slide rail 11, the sensor 121 is movably mounted on the sensor rails 122, and the bracket 30 corresponding to the slide rail 11 is provided with the sensing piece 31 corresponding to the sensor 121.

When the bracket 30 moves along the slide rail 11 to the position where the sensing piece 31 corresponds to the sensor 121, a corresponding signal is sent out, so that the driving mechanism 40 can be controlled to be started or closed through an external control device, the translation amount of the bracket 30 and the cover plate 200 can be accurately controlled, and the effect of increasing the transportation accuracy of the cover plate 200 is achieved;

in addition, according to the requirement of the actual translation amount, the position of the sensor 121 mounted on the sensor guide rail 122 is adjusted, that is, the distance between the two sensors 121 can be adjusted, so that the translation amount of the bracket 30 and the cover plate 200 is adjusted, and the effect of increasing the universality is achieved.

Referring to fig. 2, the driving mechanism 40 includes a motor 41, a speed reducing assembly 42, and a driving shaft 43, the driving shaft 43 is connected to an output shaft of the speed reducing assembly 42 and is used for driving each of the translational timing belts 21, and an input shaft of the speed reducing assembly 42 is connected to an output shaft of the motor 41 and is used for increasing an output torque of the motor 41.

The speed reduction unit 42 may be a speed reduction gear set, a worm speed reducer, a planetary speed reducer, or other conventional speed reducer, as long as the output torque of the motor 41 can be increased by reducing the output rotation speed of the motor 41. Preferably, the reduction assembly 42 is a planetary reducer.

Reduce motor 41's output rotational speed and increase motor 41's output torque through speed reduction unit 42 for required moment of torsion and rotational speed when driving axle 43 and transportation apron 200 are matchd to required moment of torsion and rotational speed, guarantee on the one hand that driving axle 43's moment of torsion is enough big, can satisfy the moment of torsion demand that drives the apron 200 removal of big quality, on the other hand avoids because of driving axle 43 and translation hold-in range 21 rotational speed are too fast, thereby the relatively poor condition of stability takes place when leading to apron 200 to transport.

In the embodiment shown in fig. 1 and 2, the transmission assembly 20 includes fixing seats 22 disposed at two ends of the corresponding slide rail assembly 10, each fixing seat 22 is rotatably connected with a translational synchronizing wheel 23, the translational synchronizing belt 21 is disposed on two translational synchronizing wheels 23 of the corresponding transmission assembly 20, and one of the fixing seats 22 of each transmission assembly 20 is rotatably connected with the corresponding translational synchronizing wheel 23 through a driving shaft 43.

The fixing seat 22 connected with the driving shaft 43 is defined as a first fixing seat, the driving shaft 43 is rotatably connected with each first fixing seat, and the translational synchronizing wheel 23 on each first fixing seat is fixedly connected with the driving shaft 43, so that when the driving shaft 43 rotates, the translational synchronizing wheel 23 on each first fixing seat can be simultaneously driven to rotate, and then each translational synchronizing belt 21 is driven to synchronously rotate, and the accuracy of the cover plate 200 during transportation is increased.

Referring to fig. 2, the transmission assembly 20 includes fixing bases 22 disposed at two ends of the corresponding slide rail assembly 10, each fixing base 22 is rotatably connected to a translational synchronizing wheel 23, and the translational synchronizing wheels 21 are disposed on two translational synchronizing wheels 23 of the corresponding transmission assembly 20.

The fixed seat 22 and the corresponding slide rail assembly 10 are relatively fixed, the two translational synchronizing wheels 23 of each transmission assembly 20 tension the corresponding translational synchronizing belt 21, and the driving mechanism 40 is configured to drive the translational synchronizing wheels 23 to rotate, so as to drive the translational synchronizing belt 21 to rotate.

As shown in fig. 2, the driving mechanism 40 further includes a driving timing belt 44, two driving timing wheels 45, a fixing plate 46, an adjusting plate 47 and an adjusting assembly 48, wherein the two driving timing wheels 45 are respectively disposed on the driving shaft 43 and the output shaft of the speed reducing assembly 42, the driving timing belt 44 is disposed on the two driving timing wheels 45, the fixing plate 46 is fixed relative to the sliding rail assembly 10, the adjusting plate 46 is disposed on the fixing plate 46 through the adjusting assembly 48, the motor 41 is disposed on the adjusting plate 46, and the adjusting assembly 48 is used for adjusting a distance between the adjusting plate 46 and the fixing plate 46.

Because the fixing plate 46 and the slide rail assembly 10 are relatively fixed, and the slide rail assembly 10 and the fixing seat 22 are relatively fixed, the fixing plate 46, the slide rail assembly 10 and the fixing seat 22 are relatively fixed; when the distance between the adjusting plate 46 and the fixing plate 46 is adjusted by the adjusting assembly 48, the distance between the adjusting plate 46 and the fixing seat 22 is adjusted.

The driving shaft 43 is rotatably connected to the fixing base 22, one of the driving synchronization wheels 45 is disposed on the driving shaft 43, the speed reducing assembly 42 is relatively fixed to the adjusting plate 47 through the motor 41, and the other driving synchronization wheel 45 is disposed on an output shaft of the speed reducing assembly 42.

Therefore, the distance between the two driving synchronous wheels 45 can be adjusted by adjusting the distance between the adjusting plate 46 and the fixing seat 22, so that the tensioning degree of the driving synchronous belt 44 can be adjusted, and the universality is improved.

The adjusting assembly 48 includes an adjusting block fixedly connected to the fixing plate 46 and an adjusting bolt rotatably connected to the adjusting block and threadedly connected to the adjusting plate 47. Therefore, when the adjusting bolt is rotated, the distance between the adjusting plate 47 and the adjusting block can be adjusted through the threaded connection between the adjusting bolt and the adjusting plate 47, and the adjusting block is fixedly connected with the fixing plate 46, so that the effect of adjusting the distance between the adjusting plate 47 and the fixing plate 46 is achieved.

As shown in fig. 1 and fig. 3, each of the brackets 30 is provided with a jacking assembly 50, and the jacking assembly 50 is used for bearing the cover plate 200 and driving the cover plate 200 to lift. The jacking assembly 50 drives the cover plate 200 to ascend and descend, the matched support 30 slides along the sliding rail assembly 10 to drive the cover plate 200 to move horizontally, the cover plate 200 can move downwards in two directions, and therefore the transportation requirements of the cover plate 200 under different conditions can be met.

In addition, because the relative position of each support 30 remains unchanged all the time, so can make when driving apron 200 through each jacking subassembly 50 and go up and down, the contact point of each jacking subassembly 50 and apron 200 can not take place the skew to guarantee the transportation accuracy when apron 200 removes in two directions.

In the embodiment shown in fig. 3, the jacking assembly 50 includes a supporting plate 51 and a driving member 52, the driving member 52 is fixedly disposed on the bracket 30 and is used for driving the supporting plate 51 to move up and down, and the supporting plate 51 is provided with a supporting groove 511 corresponding to the supporting rod 201 of the cover plate 200.

The supporting grooves 511 are used for accommodating the supporting rods 201 of the cover plate 200, so that the supporting rods 201 are limited, the stability of the cover plate 200 placed behind the supporting plates 51 is improved, and the stability of the cover plate 200 in the transportation process is improved.

In the embodiment shown in fig. 3, the driving member 52 is a cylinder, and the telescopic end of the cylinder is fixedly connected to the supporting plate 51.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.