CN110754861A

CN110754861A - Agricultural exhibition sales rack

Info

Publication number: CN110754861A
Application number: CN201911062840.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Hunan Renhe Li Precision Molding Technology Co ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-02-07
Anticipated expiration: 2039-11-04
Also published as: CN110754861B

Abstract

The invention provides an agricultural exhibition pin frame, which belongs to the field of agricultural equipment and comprises a rack, wherein a fresh-keeping cabinet is arranged above the rack, a refrigeration compressor is arranged in the rack, and an air outlet communicated with the fresh-keeping cabinet is arranged at the top of the rack; one side of the fresh-keeping cabinet is provided with a cabinet door which is of a rectangular structure. The exhibition shelf is provided with the fresh-keeping cabinet, and the refrigeration compressor is arranged in the exhibition shelf, so that agricultural products such as fruits and the like can be placed in the fresh-keeping cabinet with lower temperature for exhibition, the fresh-keeping time of the agricultural products can be prolonged, and convenience is brought to exhibitors.

Description

Agricultural exhibition sales rack

Technical Field

The invention relates to the field of agricultural equipment, in particular to an agricultural exhibition pin frame.

Background

At present, along with the development of agricultural technologies, various agricultural products show more new varieties, so that more agricultural product exhibition meetings also appear, and agricultural products of different varieties are exhibited on the exhibitions, so that exhibitors can better understand the agricultural products. At present, facilities for placing and storing agricultural products by exhibitors at exhibitions are laggard, and some agricultural products with higher requirements on storage environments cannot be effectively stored, so that troubles are brought to exhibitors.

Taking grapes in fruits as an example, the grapes have high requirements on storage conditions, and the grapes are basically placed in a fruit basket when being displayed by exhibitors at present, so that the quality of the grapes is sharply reduced within one or two days due to the storage conditions, and disadvantages are brought to the exhibitors if the exhibitors do not replace the grapes in time, and troubles are brought to the exhibitors.

Disclosure of Invention

The invention provides an agricultural exhibition pin frame, and aims to solve the problems in the prior art.

The invention is realized by the following steps:

an agricultural exhibition pin rack comprises a rack, wherein a preservation cabinet is arranged above the rack, a refrigeration compressor is arranged in the rack, and an air outlet communicated with the preservation cabinet is arranged at the top of the rack; one side of the fresh-keeping cabinet is provided with a cabinet door which is of a rectangular structure.

Further, the fresh-keeping cabinet has panel and backplate, the bottom of cabinet door is articulated mutually with the fresh-keeping cabinet, is provided with the magnetic stripe between the lateral part of cabinet door and panel and the backplate, and the outside on the top of cabinet door is provided with the handle, the inboard on cabinet door top and the lateral part joint of fresh-keeping cabinet.

Furthermore, a turntable is vertically arranged in the fresh-keeping cabinet, a plurality of connecting columns are arranged at intervals on the side part of the turntable, and each connecting column is connected with a hanging device; the hanging device comprises a hanging block, and a hook is arranged on the hanging block.

Furthermore, a connecting rod is arranged on the hanging block, the hook comprises a first hook and a second hook, connecting rings are arranged at the top ends of the first hook and the second hook, and the connecting rings are connected to the connecting rod;

the first hook and the second hook are arranged in a relatively inclined mode, and a regulator is connected between the first hook and the second hook; the adjuster comprises a first adjusting rod and a second adjusting rod, wherein one end of the first adjusting rod is provided with a threaded sleeve which is rotatably connected with the first adjusting rod, one end of the second adjusting rod is provided with a stud, and the stud is in threaded connection with the threaded sleeve; the first adjusting rod is provided with a first through hole, the first hook penetrates through the first through hole, the second adjusting rod is provided with a second through hole, and the second hook penetrates through the second through hole.

Further, the hanging device further comprises a base plate, one side of the base plate, which faces the connecting column, is provided with a connecting sleeve, the end part of the connecting sleeve is rotatably connected with the base plate, the connecting column is inserted into the connecting sleeve, and the connecting column reaches a connecting pin is further connected between the connecting sleeves.

Furthermore, the hanging device also comprises a screw and a balancing weight, a connecting block is arranged on one side of the base plate away from the connecting column, and the connecting block is positioned below the connecting sleeve;

the screw rod includes first screw thread section, linkage segment and second screw thread section, the linkage segment is located between first screw thread section and the second screw thread section, first screw thread section and second screw thread section have the opposite screw thread of direction of rotation, the linkage segment rotate connect in the connecting block, the balancing weight spiro union in first screw thread section, hang the piece spiro union in the second screw thread section, just balancing weight and hang the piece all with base plate sliding connection.

Further, the length of the screw is greater than that of the substrate, and two ends of the screw extend to the outer side of the substrate.

The agricultural exhibition and sales rack provided by the invention is provided with the preservation cabinet, and the refrigeration compressor is arranged in the exhibition and sales rack, so that agricultural products such as fruits and the like can be placed in the preservation cabinet with lower temperature for exhibition, the preservation time of the agricultural products can be prolonged, and convenience is brought to exhibitors.

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 structural diagram of an agricultural exhibit rack provided by an embodiment of the present invention;

FIG. 2 is a schematic side view of a fresh-keeping cabinet in an agricultural exhibit rack according to an embodiment of the present invention;

FIG. 3 is a schematic front view of a hanger of an agricultural exhibit rack according to an embodiment of the present invention;

FIG. 4 is a schematic top view of a hanger of an agricultural display rack according to an embodiment of the present invention;

FIG. 5 is a schematic side view of a hanger of an agricultural display pin rack provided in accordance with an embodiment of the present invention, without showing the screws;

FIG. 6 is a schematic structural diagram of a hanging block in an agricultural exhibition pin frame provided by an embodiment of the invention;

fig. 7 is a schematic structural diagram of a weight block in an agricultural exhibition pin frame according to an embodiment of the present invention.

Summary of reference numerals: the fresh-keeping cabinet comprises a rack 11, a fresh-keeping cabinet 12, a rotary disc 13, a hanging device 14, a cabinet door 15, a support column 16, a panel 17, a back plate 18, a handle 19, a magnetic stripe 20, a connecting column 21, a base plate 22, a screw 23, a balancing weight 24, a hanging block 25, a connecting sleeve 26, a connecting block 27, a first thread section 28, a connecting section 29, a second thread section 30, a sliding rail 31, a sliding groove 32, a connecting pin 33, a cover plate 34, a first hook 35, a second hook 36, an adjuster 37, a first adjusting rod 38, a second adjusting rod 39, a thread sleeve 40, a stud 41, a plug 42, a balancing weight piece 43 and an adjusting bolt.

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.

Please refer to fig. 1-7.

This embodiment provides an agricultural exhibition frame of selling, and this kind of exhibition frame of selling has fresh-keeping cabinet, and its inside refrigerating compressor that has makes agricultural products such as fruit can place and demonstrate in the fresh-keeping cabinet that the temperature is lower, can improve the fresh-keeping time of agricultural product, offers convenience for the exhibitor.

As shown in fig. 1, the agricultural display and marketing frame comprises a frame 11, a preservation cabinet 12 is arranged above the frame 11, the preservation cabinet 12 is circular, a rotating disc 13 is vertically arranged in the preservation cabinet 12, and a plurality of hanging devices 14 are arranged at intervals on the side part of the rotating disc 13; a refrigeration compressor is arranged in the frame 11, and an air outlet communicated with the fresh-keeping cabinet 12 is arranged at the top of the frame 11. One side of the fresh-keeping cabinet 12 is provided with a cabinet door 15.

As shown in fig. 1 and 2, a support column 16 is disposed on the rack 11, the support column 16 is located outside the fresh food cabinet 12, a horizontal driving shaft is disposed at the top end of the support column 16, the driving shaft extends into the fresh food cabinet 12, and the middle of the rotary disk 13 is connected to the driving shaft. The top of support column 16 is provided with motor and the speed reducer that links to each other, and drive shaft connection is in the speed reducer.

The fresh-keeping cabinet 12 is provided with a front plate 17 and a back plate 18, and the supporting column 16 is close to the back plate 18; the cabinet door 15 is of a rectangular structure, magnetic strips 20 are arranged between the side part of the cabinet door 15 and the panel 17 and the back plate 18, a handle 19 is arranged at the top part of the cabinet door 15, and the inner side of the top end of the cabinet door 15 is clamped with the side part of the fresh-keeping cabinet 12.

As shown in fig. 3-5, a plurality of connecting columns 21 are arranged at intervals on the side of the rotating disc 13, and the hanging device 14 is connected to the connecting columns 21; the hanging device 14 comprises a base plate 22, a screw 23, a balancing weight 24 and a hanging block 25;

a connecting sleeve 26 is arranged on one side of the base plate 22 facing the connecting column 21, the end part of the connecting sleeve 26 is rotatably connected with the base plate 22, and the connecting column 21 is inserted into the connecting sleeve 26; the other side of the base plate 22 is provided with a connecting block 27, the connecting block 27 is positioned below the connecting sleeve 26, the screw 23 is horizontally arranged, the screw 23 comprises a first thread section 28, a connecting section 29 and a second thread section 30, the connecting section 29 is positioned between the first thread section 28 and the second thread section 30, the first thread section 28 and the second thread section 30 are provided with threads with opposite rotation directions, the connecting section 29 is rotatably connected to the connecting block 27, the balancing weight 24 is screwed on the first thread section 28, and the hanging block 25 is screwed on the second thread section 30; a sliding rail 31 is arranged on the base plate 22 along the horizontal direction, sliding grooves 32 are arranged on the balancing weight 24 and the hanging block 25, and the sliding grooves 32 are connected to the sliding rail 31; the hanging block 25 is provided with a hook.

The connecting column 21 and the connecting sleeve 26 are both provided with jacks, and the connecting column 21 and the connecting sleeve 26 are connected through a connecting pin 33. A connecting hole is formed in the connecting block 27, and the screw 23 penetrates through the connecting hole; the connecting block 27 is also provided with a cover plate 34 detachably connected with the connecting block.

As shown in fig. 6, the hook includes a first hook 35 and a second hook 36, the first hook 35 and the second hook 36 are arranged in a relatively inclined manner, an adjuster 37 is connected between the first hook 35 and the second hook 36, the adjuster 37 includes a first adjusting rod 38 and a second adjusting rod 39, one end of the first adjusting rod 38 is provided with a threaded sleeve 40 rotatably connected with the first adjusting rod 38, one end of the second adjusting rod 39 is provided with a stud 41, and the stud 41 is screwed in the threaded sleeve 40; the first adjusting lever 38 is provided with a first through hole through which the first hook 35 passes, the second adjusting lever 39 is provided with a second through hole through which the second hook 36 passes.

Plugs 42 are arranged at two ends of the screw 23; the horizontal moving hanging block 25 can drive the screw 23 to rotate and drive the balancing weight 24 to move along the direction opposite to the moving direction of the hanging block 25.

As shown in fig. 7, the weight block 24 has a plurality of weight plates 43, the hanging block 25 is provided with an adjusting bolt 44 screwed thereto, and an end of the adjusting bolt 44 abuts against the base plate 22.

The frame 11 is a structural member at the bottom of the display and marketing frame, and the frame 11 enables the fresh-keeping cabinet 12 to have a certain height, so that people can visit the fresh-keeping cabinet more conveniently. And the rack 11 has a space therein, and articles can be placed. Set up compressor in the frame 11, can be to carrying air conditioning in the fresh-keeping cabinet 12, make fresh-keeping cabinet 12 be the freezer structure, make the fruit can be in low temperature state and preserve, can save longer time.

A rotary disc 13 is arranged in the fresh-keeping cabinet 12, and the rotary disc 13 can rotate around the center of the rotary disc 13, so that the fruits hung on the rotary disc 13 can rotate. When the exhibition is carried out, the fruits are hung on the hanging device 14 one by one, so that the exhibition mode is greatly different from the traditional exhibition mode, eyeballs of exhibitors can be attracted, and a better exhibition effect can be achieved. Carousel 13 can rotate, is provided with cabinet door 15 on the fresh-keeping cabinet 12, when the exhibitor wishes to taste the fruit or visit the fruit more closely, can rotate carousel 13, rotates the fruit that exhibitor needs to cabinet door 15 position to take out it from cabinet door 15 position.

The fresh food cabinet 12 is substantially circular and is made of a transparent material, such as glass or pvc sheet.

Support column 16 is used for supporting carousel 13, and the top of support column 16 is provided with motor and speed reducer for carousel 13's rotation mode is electronic, can control carousel 13's rotation through control switch, can rotate carousel 13 when visitor's fruit need taste, also can continuously rotate carousel 13 at the exhibition in-process, attracts the eyeball of exhibitor more, makes the exhibition effect better.

The fresh-keeping cabinet 12 is provided with a plurality of plate members which are connected in an adhesive or bolt connection mode; the cabinet door 15 is set to be a rectangular structure, so that the position of the cabinet door 15 is closer to the center of the fresh-keeping cabinet 12, and fruits can be taken out more easily after the cabinet door 15 is opened. The bottom of cabinet door 15 is articulated with fresh-keeping cabinet 12, and cabinet door 15 top and fresh-keeping cabinet 12 joint, the cabinet door 15 lateral part passes through magnetic stripe 20 with panel 17 and backplate 18 to be connected, plays sealed and stable cabinet door 15's effect.

The rotary disk 13 is provided with a plurality of connecting columns 21, the connecting columns 21 are used for connecting the hanging devices 14, and each hanging device 14 is connected to one connecting column 21. Twelve hangers 14 are provided on the display pin rack shown in fig. 1.

The hanging device 14 is provided with a base plate 22, a connecting sleeve 26 is arranged at the back of the base plate 22, and the connecting column 21 is inserted into the connecting sleeve 26 so that the hanging device 14 is connected to the rotating disc 13; and adapter sleeve 26 and base plate 22 are the relation of rotating the connection for base plate 22 can rotate relative spliced pole 21, and this kind of setting makes carousel 13 when rotating around its axis, and cable suspension device 14 can adjust its position according to its self gravity, makes cable suspension device 14 be in horizontal position all the time, and the fruit that hangs on cable suspension device 14 when making carousel 13 rotate can be along vertical setting all the time, makes the hanging of fruit more pleasing to the eye, more natural. And simultaneously, the rotary table 13 can rotate more smoothly with low resistance.

The hanging device 14 is provided with a hanging block 25 for hanging fruits, and the hanging block 25 is connected with the base plate 22 through a screw 23, so that the operation can be more convenient by moving the position of the hanging block 25 when the fruits are hung and need to be taken out; meanwhile, the base plate 22 is also provided with the counterweight block 24, so that the center of gravity of the base plate 22 is more stable, and the base plate 22 can be kept in a horizontal position more stably.

The connecting sleeve 26 and the connecting block 27 are respectively arranged at two sides of the base plate 22, and the connecting block 27 is positioned below the connecting sleeve 26, when in use, fruits are connected to the hanging block 25, so that the center of gravity of the whole hanging device 14 is lower than the position of the connecting sleeve 26; and hang block 25 and balancing weight 24 and be located the both sides of connecting block 27 respectively for the focus of cable suspension device 14 is located the central point of connecting block 27 basically, just so makes base plate 22 and screw 23 keep at horizontal position basically, and fruit can keep at vertical position comparatively steadily when making carousel 13 rotate.

The connecting block 27 is fixed on the base plate 22, and the connecting block 27 is used for connecting the screw 23; the screw 23 is a bidirectional screw 23, and the first thread section 28 and the second thread section 30 have opposite threads, so that the screw 23 can provide different directions of rotating force to the balancing weight 24 and the hanging block 25 when rotating; and the screw pitch of screw thread is great for just can drive screw rod 23 and rotate when pulling hangs piece 25, screw rod 23 can drive balancing weight 24 and remove.

The middle of the screw 23 is a connecting section 29, and the connecting section 29 is rotatably connected to the connecting block 27, so that the screw 23 can rotate relative to the connecting block 27 and the screw 23 cannot move in the horizontal direction. The balance weight block 24 and the hanging block 25 are both connected with the slide rail 31 on the base plate 22 in a sliding manner, so that the balance weight block 24 and the hanging block 25 can not rotate around the screw 23 and can only move along the length direction of the screw 23. By the limitation of the structures, the balancing weight block 24 and the hanging block 25 can only move horizontally, and the screw 23 can only rotate. And the directions of the balancing weight 24 and the hanging block 25 are opposite when the balancing weight moves, so that the gravity center of the hanging device 14 can be basically kept at the central position of the connecting block 27, and the base plate 22 and the screw 23 can be basically kept stable and are not easy to deflect in the process of moving the hanging block 25.

The length of the screw 23 is greater than that of the base plate 22, and both ends of the screw 23 extend to the outside of the base plate 22. Because the base plate 22 has a certain height (width), the base plate 22 is set to be short, so that the base plate 22 is not easy to collide or rub with the inner wall of the fresh food cabinet 12 during the rotation process of the rotary disk 13.

The hanging block 25 is provided with a hook on which fruits can be hung. Taking grapes as an example, a bunch of grapes have more branches, and the branch positions can be hung on the hooks.

When the grape fresh-keeping cabinet is used, grapes are hung on the hook, the hanging block 25 is moved, the hanging block 25 is enabled to be closer to the connecting block 27, the grapes are enabled to be closer to the center of the rotary table 13, the bunches of grapes are enabled to be closer, the grapes are enabled to be farther away from the wall surface of the fresh-keeping cabinet 12, the grapes are enabled to be not prone to collision and friction when the rotary table 13 rotates, and the rotary table 13 can rotate smoothly.

When a certain bunch of grapes needs to be taken out or tasted, the bunch of grapes is rotated to a position close to the cabinet door 15 and the rotation of the rotary disc 13 is stopped, a worker opens the cabinet door 15 and pulls the hanging block 25 outwards to enable the grapes to move towards the cabinet door 15, so that the grapes are closer to the cabinet door 15; for some larger grape bunch, a portion of it may extend outside of the fresh food cabinet 12. At the moment, the visitors can visit the grapes in a short distance, and can also take one or two grapes from the upper side to taste.

The hanger 14 shown in the figures is of a small size relative to the fresh food cabinet 12 and may not be able to better demonstrate the effect of moving the hanger bar 25; can adjust the size of cable suspension device 14 when actually processing, it is comparatively inseparable that the cluster grape can draw close when making hang the position that the piece 25 is in being close to connecting block 27, can make things convenient for picking of grape more when hanging piece 25 outwards pulling to being close to cabinet door 15 to the effect that hangs the movable characteristic of piece 25 is reflected better.

The connecting column 21 and the connecting sleeve 26 are connected through a connecting pin 33, so that the hanging device 14 can be stably connected to the rotating disc 13; the connecting block 27 is provided with a connecting hole so that the screw 23 can pass through the connecting block 27, and a bearing can be arranged in the connecting hole so that the screw 23 can rotate more smoothly. The connecting block 27 is provided with a cover plate 34, which is convenient for the installation of the bearing and the screw 23.

Be provided with two couples on hanging piece 25, and the angle of two couples can be adjusted for the grape can be connected on hanging piece 25 more steadily, and the grape hangs later can keep its physique better, makes the difficult quilt of grape granule that is in inside extrude, makes the grape can preserve for a long time more.

The hanging block 25 is provided with a connecting rod, the top ends of the first hook 35 and the second hook 36 are provided with connecting rings, the hooks are connected to the connecting rod through the connecting rings, and the hooks can rotate relative to the connecting rod. An adjuster 37 is arranged between the two hooks, and the adjuster 37 is used for adjusting the included angle between the two hooks.

The adjuster 37 has two adjusting rods, one end of the first adjusting rod 38 is provided with a threaded sleeve 40, the threaded sleeve 40 is internally provided with internal threads, and the threaded sleeve 40 is rotatably connected with the first adjusting rod 38, so that the threaded sleeve 40 can rotate relative to the first adjusting rod 38; the end of the second adjusting rod 39 is provided with a stud 41, the stud 41 is screwed in the threaded sleeve 40, and when the threaded sleeve 40 is rotated, the amount of the stud 41 selected into the threaded sleeve 40 can be changed, so that the distance between the first adjusting rod 38 and the second adjusting rod 39 is changed. Both the two connecting rods are provided with through holes, so that the hook can pass through the through holes.

The diameter of the perforation is set to be greater than the width of the hook so that the inclination angle of the hook can be adjusted. Through the arrangement of some structures, the regulator 37 cannot move up and down, and the included angle between the two hooks can be kept stable after the regulator 37 is regulated. For example, the adjuster 37 is provided at the lowermost position of the two hooks, so that the adjuster 37 cannot move downward nor upward under the action of gravity; alternatively, the side wall of the hook may be clamped in the aperture after the knob 37 is screwed, again so that the knob 37 does not move up and down the hook.

During the use, according to the difference of the size of the grape that needs hung, adjust the contained angle between two couples, make the branch of the difference of grape hang on two couples, receive the limiting displacement of two couples, the branch of grape can not draw close to the middle part, makes the inside grape granule of grape granule that the outside can not extrude, makes inside grape granule ventilate more easily, and can not broken by the extrusion, more helps the fresh-keeping of grape.

The end of the screw 23 is provided with a plug 42 to prevent the hanging block 25 and the counter weight 24 from falling off the screw 23.

The balancing weight 24 is provided with a plurality of balancing weight sheets 43, the balancing weight sheets 43 can be connected together in a clamping or magnetic attraction manner, and the balancing weight sheets 43 are increased or decreased according to different weights of the grape bunch when the weight balancing device is used, so that the center of gravity of the hanging device 14 is kept at the central position, and the hanging device 14 is kept horizontal.

The hanging block 25 is provided with an adjusting bolt 44, and the adjusting bolt 44 is abutted against the base plate 22 under normal conditions, so that the hanging block 25 cannot move and keeps stable when the rotary disc 13 rotates; when the hanging block 25 needs to be moved, the adjusting bolt 44 is screwed to be separated from the base plate 22.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An agricultural exhibition pin rack is characterized by comprising a rack, wherein a fresh-keeping cabinet is arranged above the rack, a refrigeration compressor is arranged in the rack, and an air outlet communicated with the fresh-keeping cabinet is arranged at the top of the rack; one side of the fresh-keeping cabinet is provided with a cabinet door which is of a rectangular structure.

2. The agricultural exhibition round pin frame of claim 1, characterized in that, the preservation cabinet has panel and backplate, the bottom of cabinet door is articulated with the preservation cabinet mutually, is provided with the magnetic stripe between the lateral part of cabinet door and panel and backplate, and the outside at the top of cabinet door is provided with the handle, and the inboard at cabinet door top is with the lateral part joint of preservation cabinet.

3. The agricultural display pin rack according to claim 1, wherein a turntable is vertically arranged in the fresh keeping cabinet, a plurality of connecting columns are arranged at intervals on the side of the turntable, and each connecting column is connected with a hanging device; the hanging device comprises a hanging block, and a hook is arranged on the hanging block.

4. The agricultural exhibition pin frame of claim 3, wherein the hanging block is provided with a connecting rod, the hook comprises a first hook and a second hook, the top ends of the first hook and the second hook are provided with connecting rings, and the connecting rings are connected to the connecting rod;

5. The agricultural exhibition sales rack of claim 4, characterized in that, the cable suspension device further comprises a base plate, one side of the base plate facing the connecting column is provided with a connecting sleeve, the end of the connecting sleeve is rotatably connected with the base plate, the connecting column is inserted into the connecting sleeve, and a connecting pin is further connected between the connecting column and the connecting sleeve.

6. The agricultural exhibition cotter frame of claim 5, wherein the hanging device further comprises a screw and a counterweight, a connecting block is arranged on one side of the base plate away from the connecting column, and the connecting block is positioned below the connecting sleeve;

7. The agricultural exhibit rack of claim 6, wherein the length of the screw is greater than the length of the base plate, and both ends of the screw extend to the outside of the base plate.