Lifting grading structure

Abstract

The utility model discloses a lifting grading structure and belongs to the technical field of float glass production. Comprising a turnover shaft, a plurality of conveying arms, a driving motor and a lifting mechanism, and the lifting mechanism comprises a supporting beam and a plurality of lifting units; the height of the supporting beam can be adjusted up and down, the lifting unit comprises an adjusting base which is arranged on the lower side of the conveying arm and can be in the direction of the conveying arm, a guiding assembly on the rear side of the supporting beam, a guiding plate on the rear portion of the lower side of the adjusting base and a lifting air cylinder on the supporting beam, and the lower side of the conveying arm is arranged on the upper side of the supporting beam; the lifting cylinder is hinged to the supporting beam, and a telescopic rod of the lifting cylinder is hinged to the front part of the lower side of the adjusting seat; the guiding assembly comprises two plastic blocks and two fixing plates, the two plastic blocks are located on the adjacent outer sides of the left side and the right side of the lower portion of the guiding plate respectively and located behind the supporting beam, the two fixing plates are located on the outer sides of the two plastic blocks respectively, and the front ends of the two fixing plates are fixed to the rear side of the supporting beam. The lower portion of the guide plate can slide between the two plastic blocks in the front-back direction and the vertical direction.

Description

Technical Field

[0001] The utility model belongs to the technical field of float glass production, and particularly relates to a lifting and grading structure. Background Art

[0002] The production of float glass requires the following processes: raw material preparation - high temperature melting into glass liquid in a melting furnace - drawing and shaping in a float forming tin bath - annealing in an annealing furnace - cooling, cutting, packaging, and storage. Due to the float glass process itself, the glass may have problems such as warping, uneven thickness, bubbles, and inconsistent colors. It usually needs to be sorted according to needs after cutting.

[0003] For example, the patent with application number CN202121450618.X discloses a multi-stage sorting system for glass raw sheets, including a glass conveying device arranged in the front-to-back direction and a detection device and a cutting device arranged on the glass conveying device in sequence from front to back; it also includes a crushing device, a grading device and a sampling platform arranged in sequence from front to back, and the grading device is composed of a plurality of grading units connected in series in sequence from front to back; the crushing device includes a front layered conveying structure, a crushing structure, and a front upper layer conveying structure and a front lower layer conveying structure arranged side by side up and down, and the front upper layer conveying structure and the front lower layer conveying structure are arranged directly behind the front layer conveying structure and are both arranged in the front-to-back direction; the front layer conveying structure is arranged in the front-to-back direction, and its front end is connected to the rear end of the glass conveying device and its rotation is arranged on the corresponding flip axis, and its rear end can move up and down and is respectively connected to the front end of the front upper layer conveying structure and the front end of the front lower layer conveying structure; the crushing structure is arranged at the rear end of the front lower layer conveying structure ; The grading unit includes a rear layered conveying structure, a transverse reversing conveying structure, and a rear upper layer conveying structure and a rear lower layer conveying structure arranged side by side in the upper and lower directions, wherein the rear upper layer conveying structure and the rear lower layer conveying structure are both located directly behind the rear layered conveying structure and are both arranged in the front-to-back direction; the rear layered conveying structure is arranged in the front-to-back direction, its front end is rotatably arranged on the corresponding flip axis, and its rear end can move up and down; the front end of the rear layered conveying structure of the first-level grading unit is connected with the rear end of the front upper layer conveying structure, and the front end of the rear layered conveying structure of the remaining grading units is connected with the rear end of the rear lower layer conveying structure of the previous level, and the rear end of the rear layered conveying structure is respectively connected with the front end of the rear upper layer conveying structure and the front end of the rear lower layer conveying structure when moving up and down, and the sampling platform is located at the rear end of the rear lower layer conveying structure of the last-level grading unit, and the rear end of the rear upper layer conveying structure is provided with a positioning baffle in the left-right direction and a transverse reversing conveying structure for outputting the glass in the left-right direction is provided at its rear part. The front upper conveying structure is arranged obliquely upward from front to back, and the front lower conveying structure is arranged obliquely downward from front to back; the front part of the rear upper conveying structure is arranged obliquely upward from front to back and its rear part is arranged horizontally, and the rear lower conveying structure is arranged horizontally; when the rear layered conveying structure is flipped to a low position, it is horizontal and flush with the rear lower conveying structure, and when the rear layered conveying structure is flipped to a high position, it and the front part of the corresponding rear upper conveying structure are located on the same inclined plane; the lateral reversing conveying structure is arranged below the rear upper conveying structure in the left-right direction and can move upward to above the rear upper conveying structure.The front layered conveying structure and the rear layered conveying structure both include a flip axis arranged along the left and right directions, a plurality of fixed conveying arms arranged side by side along the left and right directions, a plurality of lifting conveying arms arranged side by side along the left and right directions, a driving motor for driving the flip axis to rotate, and a lifting mechanism for synchronously driving the plurality of lifting conveying arms to move up and down. The fixed conveying arms and the lifting conveying arms are arranged alternately, the fixed conveying arms are fixed horizontally and the chains thereon are transmission-connected to the flip axis, the front ends of the lifting conveying arms are rotationally connected to the flip axis and the chains thereon are transmission-connected to the flip axis; the plurality of fixed conveying arms are coplanar and are all arranged horizontally along the front-back directions; the plurality of lifting conveying arms are coplanar and are all arranged along the front-back directions, when they are in a low position, they are coplanar with the fixed conveying arms, and when they are in a high position, they are flipped to the top of the fixed conveying arms.

[0004] In the above patent, a layered conveying structure (respectively a front layered conveying structure and a rear layered conveying structure) is provided at both the crushing device and the grading device. The front layered conveying structure and the rear layered conveying structure can be implemented by using the same lifting and grading structure. However, when the lifting and grading structure is used in different positions, the height of the high-level output and the height of the low-level conveying may need to be adaptively adjusted. In addition, after the layered conveying structure is purchased, it may not match the height of the conveying structure on site, and it may also be necessary to adjust the high-level output height and / or low-level output height of the layered conveying structure. Utility Model Content

[0005] In order to solve the above problems, the embodiment of the utility model provides a lifting and grading structure, which can adjust the height of high-level output and the height of low-level delivery, and has higher adaptability. The technical solution is as follows:

[0006] The utility model embodiment provides a lifting and grading structure, including a flip shaft 1 arranged along the left and right directions, a plurality of conveying arms 2 arranged side by side on the left and right directions, a driving motor driving the flip shaft 1 to rotate, and a lifting mechanism 3 for synchronously driving part of the conveying arms 2 to rotate upward; the conveying arms 2 are arranged obliquely downward from front to back, and their front ends are rotatably arranged on the rotating shaft 1, and the conveying wheels 4 thereon are connected to the flip shaft 1 by transmission; an even number or an odd number of conveying arms 2 can be driven by the lifting mechanism 3 to rotate upward; the lifting mechanism 3 includes a support beam 31 arranged along the left and right directions and a plurality of lifting units arranged side by side on the support beam 31, and the lifting unit can drive the corresponding conveying arms 2 to rotate upward; the height of the support beam 31 can be adjusted up and down, and the lifting unit includes an adjustment seat 32 at the lower side of the conveying arm 2 and capable of adjusting the position along the direction where the conveying arm 2 is located, a support beam The guide assembly 34 at the rear side of 31, the guide plate 35 vertically arranged at the rear part of the lower side of the adjustment seat 32 and the lifting cylinder 36 vertically arranged on the support beam 31, the lower side of the conveying arm 2 is placed on the upper side of the support beam 31; the lifting cylinder 36 is hinged on the support beam 31, and the upper end of its telescopic rod is hinged to the lower front part of the adjustment seat 32; the guide assembly 34 includes two plastic blocks 41 and two fixed plates 42, and the plastic blocks 41 and the fixed plates 42 are both arranged in the front-to-back direction, the two plastic blocks 41 are respectively located at the adjacent outer sides of the left and right sides of the lower part of the guide plate 35 and are both located at the rear of the support beam 31, the two fixed plates 42 are respectively located on the outer sides of the two plastic blocks 41 and their front ends are fixed to the rear side of the support beam 31; the lower part of the guide plate 35 can slide forward and backward and vertically between the two plastic blocks 41.

[0007] Among them, the conveying arm 2 in the embodiment of the utility model is a hollow structure and a mounting slit 5 is provided in the middle of its lower side along its direction; the adjustment seat 32 includes a slide plate 6, two sliders 7 in the middle of the front and rear ends of the slide plate 6 and cooperating with the mounting slit 5, and a hinged plate 8 at the front of the lower side of the slide plate 6, and the slide plate 6 is close to the lower side of the conveying arm 2; the slider 7 is vertically arranged on the upper side of the slide plate 6, which is embedded in the mounting slit 5 and can slide along the mounting slit 5; a plurality of first bolts 9 are arranged side by side on the center line of the slide plate 6; the first bolt 9 is arranged perpendicular to the slide plate 6, and its head is located in the conveying arm 2 and located at the mounting slit 5 On the upper side, its screw rod passes downward through the mounting strip 5 and the slide plate 6 and is locked by the nut on the lower side of the slide plate 6; the support beam 31 is a rectangular hollow beam, and a transverse slit 10 is provided on the midline of the upper and lower sides along the left and right directions; the lifting cylinder 36 is hinged on the support beam 31 through a rotating shaft inside the support beam 31 and along the left and right directions, and the lower part of the cylinder body passes downward through the transverse slit 10 on the lower side, and the upper end of the telescopic rod passes upward through the transverse slit 10 on the upper side; the transverse slit 10 can accommodate the hinged plate 8; when the conveying arm 2 is placed on the support beam 31, the slide plate 6 is placed on the upper side of the support beam 31, and the hinged plate 8 is located in the transverse slit 10.

[0008] Specifically, the slide plate 6 in the embodiment of the utility model is a rectangular plate arranged along the direction of the conveying arm 2 and parallel to the lower side of the conveying arm 2 , and the hinge plate 8 is arranged vertically and its surface is arranged along the direction of the conveying arm 2 .

[0009] Furthermore, a closing plate 11 is provided on the upper side of the support beam 31 in the embodiment of the utility model and between two adjacent lifting cylinders 36 , and the closing plate 11 closes the corresponding part of the upper transverse seam 10 .

[0010] Specifically, the closing plate 11 in the embodiment of the utility model is a rectangular plate arranged in the front-to-back direction, and a strip-shaped notch 12 is provided in the middle position of the rear part thereof in the front-to-back direction; a plurality of support plates are arranged side by side on the left and right sides of the rear seam edge of the upper transverse seam 10, and a support plate is arranged directly below each closing plate 11, and a second bolt 13 is provided on the support plate in the vertical direction, and the second bolt 13 passes downward through the strip-shaped notch 12; the front and rear ends of the closing plate 11 are respectively located in front of and behind the upper transverse seam 10, and are placed on the support plate and are locked and fixed to the upper side of the support plate by the second bolt 13.

[0011] The surface where the guide plate 35 in the embodiment of the utility model is located is arranged along the direction where the conveying arm 2 is located, and it is an angular plate or a trapezoidal plate that is larger at the top and smaller at the bottom.

[0012] Among them, a plurality of lifting legs 33 are arranged side by side on the left and right sides of the lower side of the support beam 31 in the embodiment of the utility model. The lifting legs 33 are arranged vertically and can be adjusted up and down.

[0013] Specifically, the lifting legs 33 in the embodiment of the utility model include a large square tube 14, a small square tube 15, two transverse rods 16 arranged in the left and right directions, and two support structures 17 arranged side by side in the front and back and respectively located on the front and back sides of the large square tube 14. The large square tube 14 and the small square tube 15 are both arranged vertically, and the upper end of the large square tube 14 is fixed to the lower side of the support beam 31, and two transverse rods 16 are arranged side by side in the upper and lower parts of the inner lower part thereof; the middle parts of the left and right sides of the small square tube 15 are provided with vertical seams 18 in the vertical direction, and the lower ends thereof are fixed on the ground, and the upper parts thereof are inserted into the inner lower part of the large square tube 14, and the front and back sides thereof are connected to the large square tube 14. A supporting structure 17 is provided between the corresponding sides; the transverse rod 16 is located in the vertical seam 18 and cooperates with the vertical seam 18; the supporting structure 17 is vertically arranged and includes a locking plate at the bottom of the front side or the bottom of the rear side of the large square tube 14, a rotating shaft at the front side or the rear side of the small square tube 15 and directly below the locking plate, a vertically arranged screw and two locking nuts on the screw, the locking plate is horizontally arranged and is provided with a through hole for the screw to pass upward, and the rotating shaft is arranged in the front-to-back direction; the lower end of the screw is rotatably arranged on the rotating shaft, and the upper part thereof passes upward through the through hole; the two locking nuts are respectively located on the upper and lower sides of the locking plate to fix the screw to the locking plate.

[0014] The technical solution provided by the embodiment of the utility model has the following beneficial effects: the embodiment of the utility model provides a lifting and grading structure, which can adjust the height of the high-level output and the height of the low-level conveying to adapt to the subsequent conveying structure by adjusting the adjustment seat and / or the lifting legs, and has higher adaptability. The guide assembly can cooperate with the adjustment of the adjustment seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the lifting and lowering hierarchical structure in this embodiment;

[0016] Figure 2 yes Figure 1 A partial enlarged view of

[0017] Figure 3 It is a structural schematic diagram of the combination of the support beam, the conveying arm and the lifting mechanism;

[0018] Figure 4 It is a structural schematic diagram of the combination of the conveying arm and the adjustment seat;

[0019] Figure 5 It is a schematic diagram of the structure of the support beam, lifting cylinder and closing plate combination;

[0020] Figure 6 It is a structural schematic diagram of the lifting legs.

[0021] In the figure: 1 flip shaft, 2 conveying arm, 3 lifting mechanism, 4 conveying wheel, 5 installation slit, 6 slide plate, 7 slider, 8 hinge plate, 9 first bolt, 10 transverse slit, 11 closing plate, 12 strip-shaped notch, 13 second bolt, 14 large square tube, 15 small square tube, 16 transverse rod, 17 support structure, 18 vertical slit;

[0022] 31 support beam, 32 adjustment seat, 33 lifting legs, 34 guide assembly, 35 guide plate, 36 lifting cylinder;

[0023] 41 plastic block, 42 ​​fixing plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] See also Figure 1-6Embodiment 1 provides a lifting and lowering hierarchical structure, including a flip axis 1, a plurality of conveying arms 2, a driving motor and a lifting mechanism 3. The flip axis 1 is arranged along the left and right images, and its rotation is arranged on the corresponding frame. The driving motor is used to drive the flip axis 1 to rotate, and its driving shaft can be connected to the left end or the right end of the flip axis 1 through a coupling. Multiple conveying arms 2 are arranged side by side on the left and right. An even number or an odd number of conveying arms 2 can be driven by the lifting mechanism 3 to rotate upward (that is, multiple conveying arms 2 are driven synchronously at intervals), and the multiple conveying arms 2 rotating upward are coplanar to achieve high-position output; all conveying arms 2 do not rotate upward and are coplanar to achieve low-position output; upward conveying or downward conveying is achieved by the rotation of the conveying arms 2.

[0027] The conveying arm 2 is arranged obliquely downward from front to back, and its front end is rotatably arranged on the rotating shaft 1, and the conveying wheels 4 thereon (a plurality of conveying wheels 4 are arranged side by side front and back and synchronously driven by a chain, and the chain is transmission-connected to the flip shaft 1) are transmission-connected to the flip shaft 1. Furthermore, the conveying arm 2 is a hollow structure and a mounting slit 5 (specifically a strip slit arranged in the front-to-back direction) is arranged in the middle of its lower side along the direction in which it is located. The lower side of the conveying arm 2 is placed on the upper side of the support beam 31.

[0028] The lifting mechanism 3 includes a support beam 31 arranged in the left-right direction and a plurality of lifting units arranged side by side on the support beam 31, and the lifting units can drive the corresponding conveying arm 2 to rotate upward. An even number or an odd number of lifting units are driven synchronously. The height of the support beam 31 can be adjusted up and down; specifically, a plurality of lifting legs 33 are arranged side by side on the lower side of the support beam 31, and the lifting legs 33 are arranged vertically and can be adjusted up and down. By adjusting the height of the support beam 31, the height of the low-level output can be adjusted.

[0029] The lifting unit includes an adjustment seat 32, a guide assembly 34, a guide plate 35, and a lifting cylinder 36. The adjustment seat 32 is arranged at the lower side of the conveying arm 2, and can adjust the position along the direction where the conveying arm 2 is located. It includes a slide plate 6, two sliders 7 in the middle of the front and rear ends of the slide plate 6 and matched with the installation slit 5, and a hinge plate 8 at the front of the lower side of the slide plate 6. The guide assembly 34 is arranged at the rear side of the support beam 31, and includes two plastic blocks 41 and two fixing plates 42. The lower part of the guide plate 35 is slidably arranged on the guide assembly 34, which is arranged at the lower rear part of the adjustment seat 32, and is arranged vertically. It is located between the two plastic blocks 41, and the surface where it is located is arranged along the direction where the conveying arm 2 is located (specifically, the front and rear direction). It is an angled plate or a trapezoidal plate with a larger upper part and a smaller lower part. The lifting cylinder 36 is arranged vertically, and is hinged (through a left-right rotating shaft) on the support beam 31, and the upper end of its telescopic rod is hinged (through a left-right rotating shaft) to the lower front part of the adjustment seat 32 (specifically, the hinge plate 8). The plastic block 41 and the fixed plate 42 are both arranged in the front-to-back direction. The two plastic blocks 41 are respectively located on the adjacent outer sides of the left and right sides of the lower part of the guide plate 35 and are both located behind the support beam 31. The two fixed plates 42 are respectively located on the outer sides of the two plastic blocks 41 and their front ends are fixed to the rear side of the support beam 31. Specifically, the plastic block 41 is a rectangular plate made of nylon, and the fixed plate 42 is an L-shaped metal plate. The lower part of the guide plate 35 can slide forward and backward and vertically between the two plastic blocks 41 to ensure that the conveying arm 2 can rotate and the adjustment seat 32 can be adjusted. By changing the position of the adjustment seat 32, the height of the high-position output can be adjusted. In this embodiment, an odd number or an even number of lifting cylinders 36 are driven synchronously; when the lifting cylinders 36 are extended, the conveying arm 2 rotates upward.

[0030] Among them, the slide plate 6 in this embodiment is close to the lower side of the conveying arm 2, which is a rectangular plate arranged along the direction of the conveying arm 2 and parallel to the lower side of the conveying arm 2. The slider 7 is vertically arranged on the upper side of the slide plate 6, which is embedded in the installation slit 5 and can slide along the installation slit 5, and is specifically a rectangular block. A plurality of (specifically four) first bolts 9 are arranged side by side on the center line of the slide plate 6. The first bolt 9 is arranged perpendicular to the slide plate 6, and its head (cannot pass through the installation slit 5) is located in the conveying arm 2 and on the upper side of the installation slit 5, and its screw rod passes downward through the installation slit 5 and the slide plate 6 and is locked by the nut on the lower side of the slide plate 6. The support beam 31 is a rectangular hollow beam, and a transverse slit 10 (specifically a strip slit) is arranged on the center line of the upper and lower sides along the left and right directions. The lifting cylinder 36 is hinged on the support beam 31 through a rotating shaft in the support beam 31 and along the left and right directions, and the lower part of its cylinder body passes through the lower side transverse slit 10 downward, and the upper end of its telescopic rod passes through the upper side transverse slit 10 upward. The upper transverse slot 10 can accommodate the hinge plate 8; the hinge plate 8 is arranged vertically and its surface is arranged along the direction where the conveying arm 2 is located (along the front-back direction). When the conveying arm 2 is placed on the support beam 31, the slide plate 6 is placed on the upper side of the support beam 31, and the hinge plate 8 is located in the transverse slot 10. At this time, the lifting cylinder 36 is retracted.

[0031] Furthermore, a closing plate 11 is provided on the upper side of the support beam 31 in the embodiment of the utility model and between two adjacent lifting cylinders 36. A plurality of closing plates 11 are arranged side by side on the left and right sides. The closing plate 11 closes the corresponding part of the upper transverse seam 10, and is a rectangular plate arranged in the front-to-back direction, and a strip-shaped notch 12 is arranged in the middle position of the rear part in the front-to-back direction. A plurality of supporting plates (arranged in the front-to-back direction) are arranged side by side on the rear seam edge of the upper transverse seam 10, and a corresponding supporting plate is arranged directly below each closing plate 11, and a second bolt 13 is arranged on the supporting plate in the vertical direction, and the second bolt 13 (the head of which cannot pass through the strip-shaped notch 12) passes through the strip-shaped notch 12 downward. The front and rear ends of the closing plate 11 are respectively located in front of and behind the upper transverse seam 10, and the front and rear ends are placed at the corresponding ends of the upper side of the support beam 31, and the closing plate is placed on the supporting plate and is locked and fixed to the upper side of the supporting plate by the second bolt 13.

[0032] Example 2

[0033] See also Figure 1 Or 6, Example 2 provides a lifting and grading structure, which is basically the same as that of Example 1, except that: the lifting legs 33 in this embodiment include a large square tube 14, a small square tube 15, two transverse rods 16 and two support structures 17. The large square tube 14 and the small square tube 15 are both arranged vertically, and they are both square tube structures. The large square tube 14 is larger than the small square tube 15. The upper end of the large square tube 14 is fixed to the lower side of the support beam 31 and two transverse rods 16 (located on the center line of the large square tube 14) are arranged side by side in the lower part of the inner part. The middle part of the left and right sides of the small square tube 15 is provided with a vertical seam 18 (located on the center line of the small square tube 15) along the vertical direction, the lower end of the small square tube 15 is fixed on the ground, the upper part of the small square tube 15 is inserted into the lower part of the large square tube 14, and the front and rear sides of the small square tube 15 are provided with a support structure 17 between the corresponding sides of the large square tube 14, which is in clearance fit with the large square tube 14. The transverse rod 16 is arranged in the left and right directions, and is located in the vertical slot 18, and is fitted with the vertical slot 18. The transverse rod 16 is a round rod, and can slide up and down relative to the vertical slot 18. Two supporting structures 17 are arranged side by side, and are located at the front and rear sides of the large square tube 14, respectively.

[0034] Among them, the support structure 17 is arranged vertically and includes a locking plate at the bottom of the front side or the bottom of the rear side of the large square tube 14, a rotating shaft at the front side or the rear side of the small square tube 15 and directly below the locking plate, a vertically arranged screw and two locking nuts on the screw. The locking plate is arranged horizontally and is provided with a through hole for the screw to pass upward (specifically a vertically arranged circular hole, through which the locking nut cannot pass). The rotating shaft is arranged in the front-to-back direction and is located below the large square tube 14, which is directly below the locking plate. The lower end of the screw is rotated (through the front-to-back sleeve) and is arranged on the rotating shaft, and its upper part passes through the through hole upward. The two locking nuts are respectively located on the upper and lower sides of the locking plate to fix the screw to the locking plate. By loosening the locking nut, the lifting leg 33 can be adjusted up and down, and then the support beam 31 can be adjusted up and down.

[0035] Example 3

[0036] The embodiment provides a lifting and grading structure, which is basically the same as the structure of embodiment 1, except that: the even-numbered conveying arms 2 in this embodiment can be driven by the lifting mechanism 3 (the lifting cylinder 36 is extended) to rotate upward to a horizontal position to connect with the upper conveying structure at the rear; the odd-numbered conveying arms 2 (tilted and placed on the support beam 31) do not rise to connect with the lower conveying structure at the rear.

[0037] Example 4

[0038] The embodiment provides a lifting and grading structure, which is basically the same as the structure of embodiment 3, except that: the lifting and grading structure is used in the glass crushing device, and the odd-numbered conveying arms 2 (tilted and placed on the support beam 31) do not rise to connect with the feed conveying structure of the glass crushing device.

[0039] The “first” and “second” in this embodiment are only used for distinction and have no other special meanings.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting and grading structure, comprising a turning shaft (1) arranged in a left-right direction, a plurality of conveying arms (2) arranged side by side in the left-right direction, a driving motor for driving the turning shaft (1) to rotate, and a lifting mechanism (3) for synchronously driving part of the conveying arms (2) to rotate upward; the conveying arms (2) are arranged obliquely downward from front to back, and their front ends are rotatably arranged on the rotating shaft (1), and the conveying wheels (4) thereon are connected to the turning shaft (1) in a transmission manner; the even-numbered or odd-numbered conveying arms (2) can be driven by the lifting mechanism (3) to rotate upward; characterized in that The lifting mechanism (3) comprises a support beam (31) arranged in a left-right direction and a plurality of lifting units arranged in parallel on the support beam (31), the lifting units being capable of driving the corresponding conveying arm (2) to rotate upward; the height of the support beam (31) being adjustable up and down, the lifting units comprising an adjustment seat (32) on the lower side of the conveying arm (2) and capable of adjusting the position along the direction where the conveying arm (2) is located, a guide assembly (34) on the rear side of the support beam (31), a guide plate (35) arranged vertically at the rear of the lower side of the adjustment seat (32), and a lifting cylinder (36) arranged vertically on the support beam (31), the lower side of the conveying arm (2) being arranged The lifting cylinder (36) is hinged on the supporting beam (31), and the upper end of the telescopic rod is hinged on the lower front part of the adjusting seat (32); the guiding assembly (34) comprises two plastic blocks (41) and two fixing plates (42), the plastic blocks (41) and the fixing plates (42) are arranged in the front-back direction, the two plastic blocks (41) are respectively located on the adjacent outer sides of the left and right sides of the lower part of the guiding plate (35) and are both located behind the supporting beam (31), and the two fixing plates (42) are respectively located on the outer sides of the two plastic blocks (41) and the front ends thereof are fixed to the rear side of the supporting beam (31); The lower part of the guide plate (35) can slide forward and backward and vertically between the two plastic blocks (41).

2. The lifting and grading structure according to claim 1, characterized in that: The conveying arm (2) is a hollow structure and a mounting slit (5) is provided in the middle of its lower side along the direction thereof; The adjustment seat (32) comprises a slide plate (6), two sliders (7) in the middle of the front and rear ends of the slide plate (6) and matched with the installation strip (5), and a hinge plate (8) at the front of the lower side of the slide plate (6), wherein the slide plate (6) is close to the lower side of the conveying arm (2); the slider (7) is vertically arranged on the upper side of the slide plate (6), embedded in the installation strip (5) and can slide along the installation strip (5); a plurality of first bolts (9) are arranged side by side on the middle line of the slide plate (6); the first bolt (9) is arranged vertically to the slide plate (6), the head of the first bolt (9) is located in the conveying arm (2) and on the upper side of the installation strip (5), and the screw rod thereof passes downward through the installation strip (5) and the slide plate (6) and is locked by a nut on the lower side of the slide plate (6); The support beam (31) is a rectangular hollow beam, and a transverse slit (10) is provided on the midlines of the upper and lower sides thereof along the left-right direction; the lifting cylinder (36) is hinged on the support beam (31) through a rotating shaft inside the support beam (31) and along the left-right direction, the lower part of the cylinder body passes downward through the transverse slit (10) on the lower side, and the upper end of the telescopic rod passes upward through the transverse slit (10) on the upper side; the transverse slit (10) can accommodate a hinged plate (8); when the conveying arm (2) is placed on the support beam (31), the slide plate (6) is placed on the upper side of the support beam (31), and the hinged plate (8) is located in the transverse slit (10).

3. The lifting and grading structure according to claim 2, characterized in that: The slide plate (6) is a rectangular plate arranged along the direction of the conveying arm (2) and is parallel to the lower side of the conveying arm (2); the hinge plate (8) is arranged vertically and its surface is arranged along the direction of the conveying arm (2).

4. The lifting and grading structure according to claim 2, characterized in that: A closing plate (11) is provided on the upper side of the support beam (31) and between two adjacent lifting cylinders (36), and the closing plate (11) closes the corresponding portion of the upper transverse seam (10).

5. The lifting and grading structure according to claim 4, characterized in that: The closing plate (11) is a rectangular plate arranged in the front-to-back direction, and a strip-shaped notch (12) is arranged in the middle of the rear portion in the front-to-back direction; a plurality of support plates are arranged side by side on the left and right sides of the rear seam edge of the upper transverse seam (10), and a support plate is arranged directly below each closing plate (11), and a second bolt (13) is arranged on the support plate in the vertical direction, and the second bolt (13) passes through the strip-shaped notch (12) downward; the front and rear ends of the closing plate (11) are respectively located in front of and behind the upper transverse seam (10), and are placed on the support plate and are locked and fixed to the upper side of the support plate by the second bolt (13).

6. The lifting and grading structure according to claim 1, characterized in that: The surface where the guide plate (35) is located is arranged along the direction where the conveying arm (2) is located, and is an angular plate or a trapezoidal plate that is larger at the top and smaller at the bottom.

7. The lifting and grading structure according to claim 1, characterized in that: A plurality of lifting legs (33) are arranged side by side on the left and right sides of the lower side of the support beam (31); the lifting legs (33) are arranged vertically and can be adjusted up and down.

8. The lifting and grading structure according to claim 7, characterized in that: The lifting legs (33) include a large square tube (14), a small square tube (15), two transverse rods (16) arranged in the left and right directions, and two support structures (17) arranged side by side in the front and back directions and respectively located on the front and back sides of the large square tube (14); the large square tube (14) and the small square tube (15) are both arranged vertically; the upper end of the large square tube (14) is fixed to the lower side of the support beam (31), and two transverse rods (16) are arranged side by side in the upper and lower parts of the inner lower part; the middle parts of the left and right sides of the small square tube (15) are both provided with vertical slits (18) in the vertical direction, the lower end of the small square tube (15) is fixed to the ground, the upper part of the small square tube (15) is inserted into the inner lower part of the large square tube (14), and the support structures (17) are arranged between the front and back sides and the corresponding sides of the large square tube (14); the transverse rod (16) is located in the vertical slit (18) and cooperates with the vertical slit (18); The support structure (17) is arranged vertically and comprises a locking plate at the bottom of the front side or the bottom of the rear side of the large square tube (14), a rotating shaft at the front side or the rear side of the small square tube (15) and located directly below the locking plate, a vertically arranged screw and two locking nuts on the screw; the locking plate is arranged horizontally and is provided with a through hole for the screw to pass upward; the rotating shaft is arranged in the front-to-back direction; the lower end of the screw is rotatably arranged on the rotating shaft, and the upper part thereof passes upward through the through hole; the two locking nuts are respectively located on the upper and lower sides of the locking plate to fix the screw to the locking plate.

Images