CN112617471B

CN112617471B - Computer equipment protector based on thing networking

Info

Publication number: CN112617471B
Application number: CN202011300718.4A
Authority: CN
Inventors: 杨建�; 刘述木; 牟丽莎
Original assignee: Sichuan Engineering Technical College
Current assignee: Sichuan Engineering Technical College
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2022-10-14
Anticipated expiration: 2040-11-19
Also published as: CN112617471A

Abstract

The utility model provides a computer equipment protector based on thing networking, stand including four vertical settings, transversely set up the several layer board between four stands, the both sides of layer board are equipped with the lead screw respectively, the lead screw all is located the stand outside and parallel with it, all the cooperation is equipped with the screw on the lead screw, the equal bearing connecting sleeve's of periphery inner wall of screw, telescopic inboard rotates the one side of connecting first shaped plate respectively, be equipped with several second strip shaped plate between the first strip shaped plate of both sides, wherein first blind hole is all seted up to the top surface of the first strip shaped plate of one side and second strip shaped plate, the inner one end of fixed connection spring respectively of first blind hole, the equal fixed mounting movable block of the other end of spring, the movable block is located corresponding first blind hole respectively and sliding fit with it. The invention can prevent the goods on the supporting plate from falling off, and particularly can prevent the goods from falling off due to bumping in the transit transportation process of the goods; and the space between the two rows of second strip-shaped plates can be adjusted, so that the cargo bed is suitable for cargoes with different heights.

Description

Computer equipment protector based on thing networking

Technical Field

The invention belongs to the field of computer protection, and particularly relates to a computer equipment protection device based on the Internet of things.

Background

At present, goods which are inconvenient to stack are usually vertically placed, each layer of goods are separated through plate-shaped objects, such as a computer display screen, a case, a notebook computer and the like, an open type goods shelf is usually adopted, but the goods are inconvenient to transport, workers often need to use a binding belt and the like for blocking after loading, so that the goods cannot slide off due to jolt on the way, the blocking and the disassembling are both labor-consuming and delay time, and the goods cannot be recycled due to the adoption of a destructive disassembling mode such as cutting during disassembling, so that a large amount of expenses cannot be incurred in the past.

Disclosure of Invention

The invention provides a computer equipment protection device based on the Internet of things, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

a computer equipment protection device based on the Internet of things comprises four upright posts which are vertically arranged, a plurality of supporting plates are transversely arranged between the four upright posts, lead screws are respectively arranged on two sides of each supporting plate, the lead screws are positioned outside the upright posts and are parallel to the upright posts, nuts are respectively matched on the lead screws, the peripheries of the nuts are respectively connected with the inner wall of a sleeve through bearings, the inner side of the sleeve is respectively rotatably connected with one side of a first strip-shaped plate, a plurality of second strip-shaped plates are arranged between the first strip-shaped plates on the two sides, wherein the top surfaces of the first strip-shaped plate and the second strip-shaped plate on one side are respectively provided with a first blind hole, the inner ends of the first blind holes are respectively and fixedly connected with one end of a spring, the other end of the spring is respectively and fixedly provided with a movable block, the movable blocks are respectively positioned in the corresponding first blind holes and are in sliding fit with the first blind holes, the other side of the first strip-shaped plate on one side and one side of the second strip-shaped plate are respectively provided with a convex block, guide holes are respectively formed in the inner ends of the first blind holes, second blind holes are respectively formed in the top surface of each convex block, each second blind hole is communicated with the corresponding guide hole through a through groove, the inner ends of the movable blocks are respectively and fixedly connected with one end of each L-shaped rod, the L-shaped rods are simultaneously located in the corresponding guide holes and the through grooves, inserting columns in sliding fit with the second blind holes are respectively arranged in the second blind holes, poking pieces are fixedly installed on the peripheries of the inserting columns, the poking pieces are respectively located in the corresponding through grooves, the L-shaped rods are located above the poking pieces, grooves are respectively formed in the other sides of the first strip-shaped plate and the second strip-shaped plate on the other side, the convex blocks are respectively located in the corresponding grooves, jacks are formed in the top surfaces of the grooves, magnetic absorption pieces are fixedly installed on the inner ends of the jacks, the poking columns are made of magnetic materials, the magnetic absorption pieces in the corresponding jacks, the peripheries of the positioning plates are respectively and are fixedly connected with the limiting plates, the limiting plates on the two sides of the supporting plates respectively, and the supporting plates, and the adjusting pieces can be capable of adjusting pieces for adjusting the positions of the supporting plates.

As above a computer equipment protector based on thing networking, regulating part include electric push rod, the expansion end of electric push rod respectively with the limiting plate fixed connection that corresponds, electric push rod respectively fixed mounting on the L template.

According to the computer equipment protection device based on the Internet of things, the top plate is fixedly mounted at the upper end of the stand column together, the lead screw penetrates through the top plate and is connected with the top plate through a bearing, the driving wheels are fixedly mounted at the upper end of the lead screw, the two driving wheels are connected through the driving belt, and one driving wheel is connected with the power device.

According to the computer equipment protection device based on the Internet of things, the same grooves are formed in one side of the first strip-shaped plate, the hinged bases are fixedly mounted on the inner sides of the sleeves respectively, and the hinged bases are located in the corresponding grooves and hinged with the corresponding grooves.

According to the computer equipment protection device based on the Internet of things, the resistance mechanism is arranged between the first strip-shaped plate and the adjacent second strip-shaped plate on one side and comprises the shifting rod, one end of the shifting rod is connected with the corresponding convex block through the hinged shaft and the torsion spring respectively, and the same resistance mechanism is arranged between the two adjacent second strip-shaped plates in the same row.

According to the computer equipment protection device based on the Internet of things, the other end of the shifting rod is provided with the idler wheel, and the periphery of the idler wheel is in contact fit with the corresponding second strip-shaped plate.

The computer equipment protection device based on the Internet of things further comprises a controller, wherein the controller is connected with the adjusting piece through a circuit, and the controller is connected with the recognizer through a circuit.

According to the computer equipment protection device based on the Internet of things, the lower ends of the stand columns are fixedly installed on the bottom plate together, and the lower ends of the lead screws are connected with the top surface bearing of the bottom plate.

The invention has the advantages that: the back of the supporting plate can be provided with a back plate and can also be provided with a set of same structure so as to be used when a plurality of rows of goods are placed on each layer of supporting plate. This device plays the protective effect to the goods of putting on the layer board through first bar and second bar, especially square expensive goods such as notebook computer and panel computer, when the volume of getting goods is single, the user presses the movable block downwards with the hand, the spring shrink this moment, the movable block drives L type pole downstream, L type pole makes the post of inserting separate with the magnetism tablet through the plectrum, can open a first bar or second bar, in the time of the actual use, the length of first bar and second bar slightly is greater than the goods width can, when needing to load and unload the goods on whole layer board, the user can support the fixture block that corresponds with the hand, make it can't rotate for the lead screw, then make the lead screw rotate, the screw is along the vertical movement of lead screw promptly, the screw drives the sleeve, first bar and second bar move up in step, therefore, the convenience, when needing to load and unload the goods on a plurality of layer boards, the user makes the limiting plate move forward until being located the rotation region of fixture block through adjusting the piece, then rotate the fixture block, can's unable rotation of continuation after contacting with the lead screw, thereby can make the limiting plate move up simultaneously, the trouble-saving is also relatively hard. The invention can prevent goods on the supporting plate from falling off, and particularly can prevent the goods from falling off due to bumping in the transit transportation process of the goods; the distance between the two rows of second strip-shaped plates can be adjusted, so that the goods with different heights can be adapted; the supporting plate is also suitable for being used for placing products in an exhibition, gaps are reserved among the first strip-shaped plate, the second strip-shaped plate and the supporting plate, so that people can watch the supporting plate or the hands of people can stretch into the supporting plate to operate the supporting plate, for example, a notebook computer is provided, the width of the supporting plate is less than that of the notebook computer, the distance between the two layers of supporting plates is slightly larger than the height of the notebook computer after the notebook computer is unfolded, the notebook computer can be prevented from being taken out from the gaps after the notebook computer is closed, and the first strip-shaped plate and the second strip-shaped plate can be prevented; the blocking effect is not achieved, the watching of the product is not influenced, and the first strip-shaped plate and the second strip-shaped plate can be set to be transparent structures when necessary; after the supporting plate is detached, all the first strip-shaped plates and the second strip-shaped plates are gathered, the effect of blocking bulk goods can be achieved, and the application range is very wide.

Drawings

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

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of section I of FIG. 1; FIG. 3 is an enlarged view of the view from the direction A of FIG. 1; FIG. 4 is an enlarged view of a portion II of FIG. 1; fig. 5 is a block diagram of a circuit module of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

A computer equipment protection device based on the Internet of things comprises four upright posts 1 which are vertically arranged, a plurality of supporting plates 2 are transversely arranged between the four upright posts 1, the distance between every two adjacent supporting plates 2 is the same, side plates are arranged on two sides of each supporting plate 2 and are positioned between the two upright posts 1 on the same side, lead screws 3 are respectively arranged on two sides of each supporting plate 2, the lead screws 3 are positioned outside the upright posts 1 and are parallel to the upright posts, nuts 4 are respectively matched on the lead screws 3, the distance between every two adjacent nuts 4 on the same lead screw 3 is the same, the nuts 4 on two sides are in one-to-one correspondence and flush, the periphery of each nut 4 is in bearing connection with the inner wall of a sleeve 5, the length of each nut 4 is larger than that of the sleeve 5, the inner side of each sleeve 5 is respectively and rotatably connected with one side of a first strip plate 6, a plurality of second strip plates 7 are arranged between the first strip plates 6 on two sides, and the size of the second strip plates 7 is the same as that of the first strip plates 6, the first strip-shaped plate 6, the second strip-shaped plate 7 and the support plate 2 have the same distance, wherein the top surfaces of the first strip-shaped plate 6 and the second strip-shaped plate 7 on one side are both provided with first blind holes 8, the inner ends of the first blind holes 8 are respectively and fixedly connected with one end of a spring 9, the other end of the spring 9 is respectively and fixedly provided with a movable block 10, the movable blocks 10 are respectively positioned in the corresponding first blind holes 8 and are in sliding fit with the first blind holes 8, the other side of the first strip-shaped plate 6 and one side of the second strip-shaped plate 7 on one side are both provided with a convex block 11, the first strip-shaped plate 6, the second strip-shaped plate 7 and the convex block 11 are of an integral structure, the inner ends of the first blind holes 8 are respectively provided with guide holes 12, the top surface of the convex block 11 is respectively provided with second blind holes 13, each second blind hole 13 is communicated with the corresponding guide hole 12 through a through groove 14, the inner end of an L-shaped rod 15 is respectively and fixedly connected with the inner end of the movable block 10, the spring 9 is sleeved outside the L-shaped rod 15, the L-shaped rod 15 is located in the corresponding guide hole 12 and the corresponding through groove 14, the L-shaped rod 15 can slide along the guide hole 12, the second blind hole 13 is internally provided with an inserting column 16 in sliding fit with the second blind hole, the periphery of the inserting column 16 is fixedly provided with a shifting sheet 17, the shifting sheet 17 is located in the corresponding through groove 14, the L-shaped rod 15 is located above the shifting sheet 17, the other side of the first strip-shaped plate 6 and the other side of the second strip-shaped plate 7 on the other sides are provided with grooves 18, the front surfaces of the grooves 18 are communicated with the outside, the protrusions 11 are located in the corresponding grooves 18, the top surfaces of the grooves 18 are provided with inserting holes 19, the inner ends of the inserting holes 19 are fixedly provided with magnetic attraction sheets 20, the inserting column 16 is made of a magnetic material, the upper ends of the inserting column are located in the corresponding inserting holes 19, the periphery of the nut 4 is fixedly connected with the clamping blocks 21, the length direction of the clamping blocks 21 is perpendicular to the nut 4, the length direction of the nut is smaller than the distance between the periphery of the first strip-shaped plate 4 and the first strip-shaped plate 6, the thickness of the sleeve 5 is larger than the thickness of the sleeve, the sleeve 2, the two sides of the support plates 2 are respectively provided with support plates 22, the support plates 22 are parallel to the limiting plates 1, and the limiting plates, and the positions of the limiting plates can be adjusted by adjusting plates, and the limiting plates 1. The back plate can be arranged at the back of the supporting plate 2, and a set of same structure can be arranged to be used when a plurality of rows of goods are placed on each layer of supporting plate 2. This device plays the protective effect to the goods of putting on layer board 2 through first bar 6 and second bar 7, especially square expensive goods such as notebook computer and panel computer, when the volume of getting goods is single, the user presses down movable block 10 with the hand, spring 9 contracts this moment, movable block 10 drives L type pole 15 and moves downwards, L type pole 15 makes post 16 and magnetism piece 20 separation through plectrum 17, can open a first bar 6 or second bar 7, when using practically, the length of first bar 6 and second bar 7 slightly is greater than the goods width can, when needing to load and unload the goods on whole layer board 2, the user can support corresponding fixture block 21 with the hand, make it unable for lead screw 3 rotation, then make lead screw 3 rotate, nut 4 is along lead screw 3 vertical migration, nut 4 drives sleeve 5, first bar 6 and second bar 7 move up in step, it is very convenient, when needing to load and unload to a plurality of layer boards 2 on, the user makes the fixture block 22 move forward until being located the rotation of lead screw 3, then make the fixture block 22 rotate with the screw 4 relatively hard, thereby it can not make the fixture block 21 rotate with the lead screw 3 relatively, thereby it can not rotate with the spacing board 3 relatively to continue to rotate, thereby it is unable to rotate, thereby it is difficult to save time to rotate with the lead screw 3, the rear movement of screw 21. The invention can prevent goods on the supporting plate 2 from falling off, and particularly can prevent the goods from falling off due to bumping in the transit transportation process of the goods; the distance between the two rows of second strip-shaped plates 7 can be adjusted, so that the goods with different heights can be adapted; the portable notebook computer supporting plate is also suitable for being used for placing products in an exhibition, gaps are reserved among the first strip-shaped plate 6, the second strip-shaped plate 7 and the supporting plate 2, people can watch the portable notebook computer or the hands of the people can stretch into the portable notebook computer to operate the portable notebook computer, the width of the supporting plate 2 is not as wide as that of the portable notebook computer, the distance between the two layers of supporting plates 2 is slightly larger than the height of the portable notebook computer after being unfolded, the portable notebook computer can be prevented from being taken out of the gaps after being closed, and the first strip-shaped plate 6 and the second strip-shaped plate can be prevented; the blocking effect is not achieved, the product is not influenced to be watched, and the first strip-shaped plate 6 and the second strip-shaped plate 7 can be set to be transparent structures if necessary; after the supporting plate 2 is detached, all the first strip-shaped plates 6 and the second strip-shaped plates 7 are gathered, so that the effect of blocking bulk goods can be achieved, and the application is very wide.

Specifically, as shown in fig. 3, the adjusting member according to this embodiment includes an electric push rod 23, the fixture block 21 and the limiting plate 22 are both located behind the corresponding screw rod 3, the electric push rod 23 is both located in the longitudinal direction of the limiting plate 22, the movable ends of the electric push rod 23 are respectively fixedly connected to the corresponding limiting plate 22, and the electric push rods 23 are respectively and fixedly mounted on the L-shaped plate 24. L-shaped plate 24 fixed mounting is on the curb plate, and user control electric putter 23 extends, and limiting plate 22 moves towards fixture block 21 direction, and limiting plate 22 can restrict fixture block 21 and use lead screw 3 to rotate as the center to make screw 4 can follow its vertical migration when lead screw 3 rotates, and all screw 4 synchronous motion, be applicable to holistic altitude mixture control or load and unload goods on a large scale.

Specifically, as shown in fig. 1, a top plate 25 is fixedly mounted at the upper end of the upright post 1, the lead screws 3 penetrate through the top plate 25 and are connected with the top plate through bearings, driving wheels 26 are fixedly mounted at the upper ends of the lead screws 3, the two driving wheels 26 are connected through a driving belt 27, and one driving wheel 26 is connected with a power device. The power device is a motor 28, the motor 28 is a forward and reverse rotating motor, the output end of the motor 28 is fixedly connected with the center of one of the driving wheels 26, the motor 28 is fixedly arranged on the top surface of the top plate 25 through a support and other structures, and the two lead screws 3 can synchronously move through the structure.

Further, as shown in fig. 1, the same grooves 18 are formed on one side of the first strip-shaped plate 6, hinge seats 29 are fixedly mounted on the inner sides of the sleeves 5, and the hinge seats 29 are located in the corresponding grooves 18 and are hinged thereto. The hinge joint is provided with a torsion spring which enables the first strip-shaped plate 6 to have a tendency of moving towards the direction of the supporting plate 2, and the structure can prevent the first strip-shaped plate 6 from swinging outwards arbitrarily after the inserting column 16 is separated from the inserting hole 19.

Furthermore, as shown in fig. 4, a resistance mechanism is disposed between the first strip-shaped plate 6 and the adjacent second strip-shaped plate 7 on one side of the present embodiment, the resistance mechanism includes a shift lever 30, one end of the shift lever 30 is connected to the corresponding protrusion 11 through a hinge shaft and a torsion spring, respectively, and the same resistance mechanism is disposed between the adjacent second strip-shaped plates 7 in the same row. The torsional spring gives driving lever 30 with the power of laminating second strip 7, consequently need overcome the resistance of torsional spring when opening second strip 7, can avoid second strip 7 arbitrary outside swing to the goods accident on the layer board 2 drops.

Furthermore, as shown in fig. 4, the other end of the shift lever 30 of the present embodiment is provided with a roller 31, and the outer circumference of the roller 31 is in contact fit with the corresponding second strip 7. The structure can prevent the second strip-shaped plate 7 from rubbing against the deflector rod 30, prolong the service life of the deflector rod 30 and keep the aesthetic property of the second strip-shaped plate 7.

Furthermore, as shown in fig. 5, the present embodiment further includes a controller, the controller is electrically connected to the adjusting component, and the controller is electrically connected to the identifier. The recognizer is fingerprint identification sensor or face identification sensor, when all first bar-shaped board 6 and second bar-shaped board 7 of user control rise, need enter the information that can supply the controller to discern through the recognizer, the controller has the information storage function, can enter the information storage module with above-mentioned information in advance, after the information is approved, the user can operate through the controller, the controller is electric putter 23 and motor 28 respectively, electric putter 23 extends earlier, motor 28 begins to work afterwards, can prevent the condition of malicious operation and maloperation, and can form the record, can supply the inquiry.

Furthermore, as shown in fig. 1, the lower ends of the upright posts 1 of the present embodiment are jointly and fixedly mounted with a bottom plate 32, and the lower ends of the lead screws 3 are all connected with the top surface bearing of the bottom plate 32. This structure can further strengthen lead screw 3's stability, can reduce the probability that 3 bottoms of lead screw atress warp simultaneously.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a computer equipment protector based on thing networking, includes stand (1) of four vertical settings, transversely sets up several layer board (2), its characterized in that between four stand (1): the two sides of the supporting plate (2) are respectively provided with a lead screw (3), the lead screws (3) are positioned outside the upright posts (1) and are parallel to the upright posts, the lead screws (3) are respectively provided with a screw nut (4) in a matching way, the periphery of the screw nut (4) is respectively connected with the inner wall of the sleeve (5) in a bearing way, the inner side of the sleeve (5) is respectively connected with one side of the first strip-shaped plate (6) in a rotating way, a plurality of second strip-shaped plates (7) are arranged between the first strip-shaped plates (6) at the two sides, the distance between the two rows of second strip-shaped plates (7) can be adjusted, the top surfaces of the first strip-shaped plate (6) and the second strip-shaped plate (7) at one side are respectively provided with a first blind hole (8), the inner end of the first blind hole (8) is respectively fixedly connected with one end of a spring (9), the other end of the spring (9) is respectively and is fixedly provided with a movable block (10), the movable block (10) is respectively positioned in the corresponding first blind hole (8) and is in a sliding fit with the first blind hole, the other side of the first strip-shaped plate (6) at one side and one side of the second strip-shaped plate (7) at one side, the first blind hole (8) is respectively provided with a corresponding guide block (12), the guide block (13), the inner end of the guide block (12) is respectively communicated with a through hole (13), the guide bar-shaped plate (12) and a through-shaped hole (13), the L-shaped rod (15) is simultaneously positioned in the corresponding guide hole (12) and the through groove (14), the second blind hole (13) is internally provided with an insert column (16) in sliding fit with the second blind hole respectively, the periphery of the insert column (16) is fixedly provided with a shifting sheet (17), the shifting sheet (17) is positioned in the corresponding through groove (14), the L-shaped rod (15) is positioned above the shifting sheet (17), the other side of the first strip-shaped plate (6) and the other side of the second strip-shaped plate (7) are both provided with a groove (18), the convex block (11) is positioned in the corresponding groove (18), the top surface of the groove (18) is both provided with a jack (19), the inner end of the jack (19) is fixedly provided with a magnetic suction sheet (20), the insert column (16) is made of a magnetic material, the upper end of the insert column (16) is positioned in the corresponding jack (19), the periphery of the screw (4) is fixedly connected with a clamping block (21), the two sides of the supporting plate (2) are respectively provided with a limiting plate (22), the adjusting plate (22) is connected with an adjusting electric rod (23), the adjusting plate (23) which is arranged on the push rod, the second blind hole (23) and a protecting plate (23) which is respectively connected with a protecting plate (23), get goods quantity when the individual table, the user can open a first bar board (6) or second bar board (7) with pressing down movable block (10) with the hand, when needs load and unload the goods on whole layer board (2), the user can support corresponding fixture block (21) with the hand, then makes lead screw (3) rotate, and screw (4) drive sleeve (5), first bar board (6) and second bar board (7) move up in step.

2. The internet of things-based computer equipment protector according to claim 1, wherein: the upper end of the upright post (1) is fixedly provided with a top plate (25) together, the screw rod (3) penetrates through the top plate (25) and is connected with a bearing of the top plate, the upper end of the screw rod (3) is fixedly provided with a driving wheel (26), the two driving wheels (26) are connected through a driving belt (27), and one driving wheel (26) is connected with a power device.

3. The internet of things-based computer equipment protector according to claim 1, wherein: the same grooves (18) are formed in one side of each first strip-shaped plate (6), hinge seats (29) are fixedly mounted on the inner sides of the sleeves (5) respectively, and the hinge seats (29) are located in the corresponding grooves (18) and are hinged with the corresponding grooves.

4. The internet of things-based computer equipment protection device according to claim 1 or 3, wherein: a resistance mechanism is arranged between the first strip-shaped plate (6) and the adjacent second strip-shaped plate (7) on one side, the resistance mechanism comprises a shifting rod (30), one end of the shifting rod (30) is connected with a corresponding bump (11) through a hinged shaft and a torsion spring respectively, and the same resistance mechanism is arranged between the two adjacent second strip-shaped plates (7) in the same row.

5. The internet of things-based computer equipment protector according to claim 4, wherein: the other end of the shifting lever (30) is provided with a roller (31), and the periphery of the roller (31) is in contact fit with the corresponding second strip-shaped plate (7).

6. An internet of things based computer equipment protection device according to claim 1, 2 or 3, wherein: the controller is connected with the adjusting part circuit, and the controller circuit is connected with the identifier.

7. The internet of things-based computer equipment protector according to claim 1, wherein: the lower end of the upright post (1) is fixedly provided with a bottom plate (32) together, and the lower end of the lead screw (3) is connected with a top surface bearing of the bottom plate (32).