Automobile casting sample showing stand

Abstract

The invention relates to the technical field of showing stands, and discloses an automobile casting sample showing stand which comprises a limiting frame, a positioning assembly used for clamping an automobile casting is arranged on the surface of the limiting frame, and two lifting assemblies used for lifting the automobile casting are symmetrically arranged on the two sides of the limiting frame. According to the automobile casting clamping device, linkage of the multi-direction extrusion rods can be driven through inflation of the air cavity shell, the clamping device can be automatically attached to the surface contours of castings in different shapes, and the automobile casting clamping device is particularly suitable for lossless fixing of special-shaped castings; a ratchet block is meshed with a ratchet plate to be matched with pre-tightening force of a first spring, it is ensured that the risk of accidental sliding off is avoided in the lifting process, a limiting roller is adopted to squeeze a roller elastic contact system, dynamic damping force is applied through a second spring during rotation adjustment, the smoothness of 360-degree rotation is ensured, and precise positioning at any angle can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of display racks, in particular to an automobile casting sample display rack. Background Art

[0002] Automotive castings are metal parts obtained through casting processes such as die casting and sand casting, where molten metal is poured into a mold and then cooled and formed. With the rapid development of the automotive industry, castings serve as the manufacturing foundation for core components such as engines, chassis, and transmission systems. Their process precision and quality directly affect the performance of the entire vehicle. In scenarios such as technology demonstrations, product marketing, and production quality inspection, how to efficiently and intuitively present the structural details and process characteristics of castings has become an industry necessity.

[0003] After searching, a Chinese patent with publication number CN207571930U discloses an automobile parts display stand, which includes a lifting sleeve, a fixing frame and a No. 1 support platform. A steering wheel is fixed under the lifting sleeve, and a No. 1 rotating screw is connected to the outer side of the lifting sleeve. It has the advantages of expanding the display area and making the parts display effect better. However, this display stand is not easy to clamp and stabilize automobile castings of different volumes and shapes within a certain range. Summary of the Invention

[0004] Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides an automobile casting sample display stand, which is mainly used to solve the problem that it is difficult to stably clamp automobile castings of different volumes and shapes within a certain range.

[0006] Technical Solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A display stand for automobile casting samples comprises a limit frame, wherein the surface of the limit frame is provided with a positioning assembly for clamping automobile castings, two lifting assemblies for lifting automobile castings are symmetrically provided on both sides of the limit frame, and two adjustment assemblies for rotating automobile castings are symmetrically provided on the surface of the limit frame, and the positioning assembly comprises two air cavity shells symmetrically fixedly connected to the surface of the limit frame, and the surface of each air cavity shell is installed with an air pipe quick connector, and a plurality of positioning holes are evenly opened inside the limit frame, and a sleeve is provided inside each of the positioning holes, and the ends of the two sleeves located on the side away from the air cavity shells are inclined toward the center, and one end of the sleeve is inserted into the interior of the air cavity shell, and the interior of each sleeve is slidably connected to an extrusion rod, and one end of the extrusion rod is fixedly connected to a clamping mechanism for fixing the automobile casting.

[0009] Furthermore, the clamping mechanism includes a positioning ball provided at one end of the extrusion rod away from the sleeve, the surface of the positioning ball is slidably connected to a positioning sleeve, and the side of the positioning sleeve away from the positioning ball is fixedly connected to a rubber plate.

[0010] Furthermore, the lifting assembly includes a positioning seat located below the limit frame, a positioning groove is provided inside the positioning seat, a linkage rod rotatably connected to the positioning seat is provided inside the positioning groove, one end of the linkage rod passes through the surface of the positioning seat and is fixedly connected to a first hand wheel, two first bevel gears are symmetrically fixedly connected to the surface of the linkage rod, the surface of each of the first bevel gears is meshed with a second bevel gear, the second bevel gear is rotatably connected to the positioning seat, the surface of each of the second bevel gears is fixedly connected to a screw, the surface of each of the screws is threadedly connected to a moving block, the two moving blocks are respectively located on both sides of the limit frame, and the surface of the positioning seat is provided with a stabilizing mechanism for stabilizing the movement of automobile castings.

[0011] Furthermore, the stabilizing mechanism includes two limiting shells symmetrically fixedly connected to the surface of the positioning seat, and each of the limiting shells is fixedly connected to two limiting rails. The surface of the moving block has two symmetrical sliding grooves, and the limiting rails are inserted into the sliding grooves and are slidably connected to the moving block through the sliding grooves. A locking mechanism for position locking is provided inside the moving block.

[0012] Furthermore, the locking mechanism includes a ratchet plate fixedly connected to the inside of the limiting rail, two limiting grooves are symmetrically opened inside the moving block, and a ratchet block slidingly connected to the moving block is provided inside each of the limiting grooves, and the ratchet block is meshed with the ratchet plate, and a first spring is provided inside the limiting groove, and the two ends of the first spring are respectively fixedly connected to the moving block and the ratchet block, and an unlocking mechanism is provided inside the moving block.

[0013] Furthermore, the unlocking structure includes a limiting hole opened inside the moving block, a first gear is provided inside the limiting hole, the first gear is slidably connected to the moving block through the limiting hole, the surface of the first gear is fixedly connected to the second hand wheel, the surface of each ratchet block is fixedly connected to the connecting plate, the surface of each connecting plate is fixedly connected to the first tooth plate, the two first tooth plates are staggered with each other, the first tooth plate is meshed with the first gear, a first tooth groove is opened inside the moving block, and a second tooth groove is opened inside the moving block, the first tooth groove and the second tooth groove are respectively located on both sides of the first gear, and both are mutually connected with the limiting hole.

[0014] Furthermore, the adjustment component includes a fixed column fixedly connected to the surface of the moving block and a positioning ring fixedly connected to the surface of the limit frame, the fixed column is inserted into the interior of the positioning ring, and a plurality of limiting rollers are evenly fixedly connected to the interior of the positioning ring, and a plurality of fixed grooves are evenly opened on the surface of the fixed column, and an extrusion roller is provided inside each of the fixed grooves, and the extrusion roller is slidably connected to the fixed column through the fixed groove, and the extrusion roller and the limiting roller fit each other, and a second spring is provided inside each of the fixed grooves, and the two ends of the second spring are respectively fixedly connected to the extrusion roller and the fixed column.

[0015] Beneficial effects

[0016] Compared with the prior art, the present invention provides an automobile casting sample display stand, which has the following beneficial effects:

[0017] 1. This invention utilizes a multi-directional extrusion rod driven by inflated air chambers, combined with a rubber plate and positioning ball structure, to enable the clamping mechanism to automatically conform to the surface contours of castings of varying shapes, avoiding surface scratches caused by rigid clamping. The universal rotation design of the positioning sleeve enables self-adjustment of the contact angle, making it particularly suitable for non-destructive fixing of special-shaped castings.

[0018] 2. This invention utilizes the meshing of the ratchet block and ratchet plate, combined with the preload of the first spring, to create a one-way self-locking protection, ensuring no risk of accidental slipping during the lifting process. The dual-gear, separate unlocking design, controlled by the second handwheel, provides both safe unlocking and precise resetting, making it particularly suitable for the controlled lifting of heavy castings.

[0019] 3. The present invention adopts a limiting roller-squeezing roller elastic contact system, and applies dynamic damping force through the second spring during rotation adjustment, which not only ensures the smoothness of 360-degree rotation, but also achieves precise positioning at any angle.

[0020] 4. The present invention adopts the air pipe entanglement prevention design of the reciprocating rotation limit frame, combined with the rotation compensation interface of the quick connector, to maintain the air path unobstructed when realizing multi-angle display. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an automobile casting sample display stand proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the horizontal cross-section structure of the air cavity shell of an automobile casting sample display stand proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the vertical cross-section structure of a positioning seat of an automobile casting sample display stand proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the moving block and limiting rail of an automobile casting sample display stand proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the horizontal cross-section structure of a moving block of an automobile casting sample display stand proposed by the present invention;

[0026] Figure 6 The present invention proposes an automobile casting sample display stand Figure 5 Schematic diagram of the enlarged structure of part A.

[0027] Figure 7 This is a schematic structural diagram of the connecting plate and the first gear of an automobile casting sample display stand proposed by the present invention;

[0028] Figure 8 This is a schematic structural diagram of a positioning ring and a fixing column of an automobile casting sample display stand proposed by the present invention;

[0029] In the figure: 1. Positioning assembly; 11. Limiting frame; 12. Air cavity shell; 13. Sleeve; 14. Extrusion rod; 15. Positioning ball; 16. Positioning sleeve; 17. Rubber plate; 2. Lifting assembly; 21. Positioning seat; 22. Positioning groove; 23. Linkage rod; 24. First bevel gear; 25. Second bevel gear; 26. Screw; 27. Moving block; 28. Limiting rail; 29. ​​Limiting shell; 210. Slide; 211. Ratchet plate; 212. Ratchet block; 213. First spring; 214. Connecting plate; 215. First tooth plate; 216. First gear; 217. First tooth groove; 218. Second tooth groove; 3. Adjusting assembly; 31. Positioning ring; 32. Limiting roller; 33. Fixed column; 34. Fixed groove; 35. Extrusion roller; 36. Second spring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention include direct and indirect connections (couplings) unless otherwise specified. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] Reference Figures 1-8 , a display stand for automobile casting samples, including a limit frame 11, the surface of the limit frame 11 is provided with a positioning component 1 for clamping different volumes, two lifting components 2 for lifting automobile castings are symmetrically provided on both sides of the limit frame 11, and two adjustment components 3 for rotating automobile castings are symmetrically provided on the surface of the limit frame 11, the positioning component 1 includes two air cavity shells 12 symmetrically fixedly connected to the surface of the limit frame 11, and a trachea quick connector is installed on the surface of each air cavity shell 12. The interior of the limit frame 11 is evenly provided with a number of positioning holes, and a sleeve 13 is provided inside each positioning hole, and the two sleeves 13 on the side are located away from the air cavity shell 12. One end of the sleeve 13 is inserted into the interior of the air cavity shell 12, and the interior of each sleeve 13 is slidably connected to an extrusion rod 14, and one end of the extrusion rod 14 is fixedly connected to a clamping mechanism for matching automobile castings of different shapes.

[0034] The end of the extrusion rod 14 away from the sleeve 13 is fixedly connected to a positioning ball 15 , a positioning sleeve 16 is slidably connected to the surface of the positioning ball 15 , and a rubber plate 17 is fixedly connected to the side of the positioning sleeve 16 away from the positioning ball 15 .

[0035] When it is necessary to clamp automobile castings of different shapes within a certain range, the automobile casting is first placed inside the limit frame 11, and then the external air pipe is connected to the air pipe quick connector. Gas is injected into the air cavity shell 12 through an external air pump. Due to the compression of the gas, several extrusion rods 14 will move toward the automobile casting inside the sleeve 13 until the rubber sheet 17 and the automobile casting are in contact with each other. Because there are multiple extrusion rods 14 and they contact the automobile casting from different directions, after one of the extrusion rods 14 squeezes the automobile casting, it will not move anymore, and the remaining extrusion rods 14 that have not contacted will continue to move toward the automobile casting. By moving each extrusion rod 14 by a different distance, automobile castings of different shapes and volumes within a certain range can be clamped and fixed. When the rubber plate 17 and the automobile casting come into contact with each other, since the rubber plate 17 is made of rubber material, its own material can not only prevent the extrusion rod 14 from making hard contact with the automobile casting and causing deformation, but also increase the friction with the automobile casting, reducing the risk of the automobile casting falling. At the same time of contact, the automobile casting will exert force on the rubber plate 17, so that the positioning sleeve 16 will be subjected to force and rotate on the surface of the positioning ball 15. It can change according to the shape of the contact with the clamped object, and has higher applicability.

[0036] In order to solve the technical problem of lifting automobile castings, the present invention adopts a lifting assembly 2 including a positioning seat 21 located below the limit frame 11, a positioning groove 22 is provided inside the positioning seat 21, and a linkage rod 23 rotatably connected to the positioning seat 21 is provided inside the positioning groove 22. One end of the linkage rod 23 passes through the surface of the positioning seat 21 and is fixedly connected to the first hand wheel. The surface of the linkage rod 23 is symmetrically fixedly connected to two first bevel gears 24, and the surface of each first bevel gear 24 is meshed with a second bevel gear 25. The second bevel gear 25 is rotatably connected to the positioning seat 21, and the surface of each second bevel gear 25 is fixedly connected. Screw 26, the surface of each screw 26 is threadedly connected to a moving block 27, and the two moving blocks 27 are respectively located on both sides of the limit frame 11. The surface of the positioning seat 21 is provided with a stabilizing mechanism for stabilizing and moving the automobile casting. The stabilizing mechanism includes two limiting shells 29 symmetrically fixedly connected to the surface of the positioning seat 21, and the interior of each limiting shell 29 is fixedly connected to two limiting rails 28. The surface of the moving block 27 is symmetrically provided with two slide grooves 210, and the limiting rails 28 are inserted into the interior of the slide groove 210 and are slidably connected to the moving block 27 through the slide groove 210. The interior of the moving block 27 is provided with a locking mechanism for position locking. The locking mechanism includes a ratchet plate 211 fixedly connected to the inside of the limiting rail 28, and two limiting grooves are symmetrically provided inside the moving block 27, and a ratchet block 212 is provided inside each limiting groove to be slidably connected to the moving block 27, and the ratchet block 212 is meshed with the ratchet plate 211, and a first spring 213 is provided inside the limiting groove. The two ends of the first spring 213 are respectively fixedly connected to the moving block 27 and the ratchet block 212, and an unlocking mechanism is provided inside the moving block 27. The unlocking structure includes a limiting hole provided inside the moving block 27, and a first gear 216 is provided inside the limiting hole. The first gear 216 is slidably connected to the moving block 27 through the limiting hole. The surface of the first gear 216 is fixedly connected to the second hand wheel, and the surface of each ratchet block 212 is fixedly connected to the connecting plate 214, and the surface of each connecting plate 214 is fixedly connected to the first tooth plate 215. The two first tooth plates 215 are staggered with each other, and the first tooth plates 215 are meshed with the first gear 216. A first tooth groove 217 is provided inside the moving block 27, and a second tooth groove 218 is provided inside the moving block 27. The first tooth groove 217 and the second tooth groove 218 are respectively located on both sides of the first gear 216, and are mutually connected with the limiting hole. When it is necessary to lift the automobile casting, the first hand wheel is rotated, and the two linkage rods 23 will drive the second bevel gear 25 to rotate inside the positioning groove 22 through the first bevel gear 24, so that the moving block 27 meshed with it is moved inside the limiting shell 29 through the rotation of the screw 26, and slides on the surface of the limiting rail 28 through the slide groove 210, so that the automobile casting can be driven up and down through the limiting frame 11. The limiting rail 28 can prevent the direction of the moving block 27 from shifting up and down. When the moving block 27 moves upward,The first gear 216 is located inside the first tooth groove 217. The two ratchet blocks 212 will slide inside the limit groove due to the mutual engagement with the ratchet plate 211. The first spring 213 will make the ratchet block 212 close to the surface of the ratchet plate 211. When it moves to a suitable height and no longer moves, the ratchet block 212 and the ratchet plate 211 can engage with each other to provide support for the moving block 27, thereby preventing only the second bevel gear 25 from being subjected to force, causing the thread of the second bevel gear 25 to be easily deformed, which in turn shortens the service life of the second bevel gear 25. When the automobile casting needs to be moved downward, the second hand wheel is pulled toward the outside of the moving block 27, and the first gear 216 will slide into the first tooth groove 217 from the inside. The second hand wheel is then rotated to move the two first tooth plates 215 toward the center of the moving block 27. The two first tooth plates 215 drive the two ratchet blocks 212 to slide inside the limiting groove through the connecting plate 214 until the two ratchet blocks 212 no longer mesh with the ratchet plates 211. The second hand wheel is then pulled outward again, so that half of the second hand wheel enters the second tooth groove 218, thereby limiting the second hand wheel and preventing the first gear 216 from rotating indirectly due to the elastic potential energy of the first spring 213. There is no need to hold the second hand wheel all the time. The first hand wheel is then rotated in the opposite direction to allow the first tooth groove 217 to move downward.

[0037] In order to solve the technical problem of rotating display of automobile castings, the present invention adopts that the adjustment component 3 includes a fixed column 33 fixedly connected to the surface of the moving block 27 and a positioning ring 31 fixedly connected to the surface of the limit frame 11. The fixed column 33 is inserted into the interior of the positioning ring 31. The interior of the positioning ring 31 is evenly fixedly connected with a number of limiting rollers 32. The surface of the fixed column 33 is evenly provided with a number of fixed grooves 34. A squeezing roller 35 is provided inside each of the fixed grooves 34. The squeezing roller 35 is slidably connected to the fixed column 33 through the fixed groove 34. The squeezing roller 35 and the limiting roller 32 fit together. A second spring 36 is provided inside each of the fixed grooves 34. The two ends of the second spring 36 are fixedly connected to the squeezing roller 35 and the fixed column 33 respectively. When the automobile casting When the parts are raised to a certain position for display, in order to display the automobile castings at multiple angles, force is applied to the limit frame 11, and the positioning ring 31 rotates on the surface of the fixed column 33, thereby realizing the rotation of the limit frame 11. When the positioning ring 31 rotates, the squeezing roller 35 moves inside the fixed groove 34 due to the force applied by the limit roller 32. After it is rotated to a suitable angle, the second spring 36 causes the squeezing roller 35 to be tightly attached to the two limit rollers 32 due to its elastic potential energy. The squeezing roller 35 is limited by the limit roller 32, so that after no force is applied to the limit frame 11, the limit frame 11 can maintain the rotation angle without rotating, which facilitates the observation of the automobile castings. When rotating the limit frame 11, it needs to rotate back and forth due to the existence of the external air pipe.

[0038] The present invention is divided into the following steps when used:

[0039] S1: When it is necessary to clamp automobiles of different shapes within a certain range, first place the automobile casting inside the limiting frame 11, then connect the external air pipe to the air pipe quick connector, and use an external air pump to inject air into the air cavity shell 12. Due to the compression of the gas, several extrusion rods 14 will move toward the automobile casting inside the sleeve 13 until the rubber plate 17 and the automobile casting are in contact with each other. When the rubber plate 17 and the automobile casting are in contact with each other, the automobile casting will apply force to the rubber plate 17, so that the positioning sleeve 16 will be forced to rotate on the surface of the positioning ball 15, and the shape of the positioning sleeve 16 can change according to the shape of the object being clamped.

[0040] S2: When it is necessary to lift the automobile casting, turn the first hand wheel, and the two linkage rods 23 will drive the second bevel gear 25 to rotate inside the positioning groove 22 through the first bevel gear 24, so that the movable block 27 engaged with it moves inside the limit shell 29 through the rotation of the screw 26, and slides on the surface of the limit rail 28 through the slide groove 210, so that the automobile casting can be driven up and down through the limit frame 11. When the movable block 27 moves upward, the first gear 216 is located inside the first tooth groove 217, and the two ratchet blocks 212 will slide inside the limit groove due to mutual engagement with the ratchet plate 211. The first spring 213 will make the ratchet block 212 close to the surface of the ratchet plate 211. When it moves to a suitable height and no longer moves, the ratchet block 212 and the ratchet plate can be 211 mesh with each other and provide support for the moving block 27. When the automobile casting needs to be moved downward, the second hand wheel is pulled toward the outside of the moving block 27, and the first gear 216 slides from the inside of the first tooth groove 217 into the inside of the limiting hole and meshes with the two first tooth plates 215. Then, the second hand wheel is rotated to make the two first tooth plates 215 move toward the center of the moving block 27. The two first tooth plates 215 drive the two ratchet blocks 212 to slide inside the limiting groove through the connecting plate 214 until the two ratchet blocks 212 no longer mesh with the ratchet plates 211. Then, the second hand wheel is pulled outward again to make half of the second hand wheel enter the inside of the second tooth groove 218, thereby limiting the second hand wheel. Then, the first hand wheel is rotated in the opposite direction so that the first tooth groove 217 can move downward.

[0041] S3: In order to display automobile castings at multiple angles, force is applied to the limit frame 11, and the positioning ring 31 will rotate on the surface of the fixed column 33, thereby realizing the rotation of the limit frame 11. When the positioning ring 31 rotates, the squeezing roller 35 will move inside the fixed groove 34 due to the force applied by the limit roller 32 until it rotates to an appropriate angle. The second spring 36 will make the squeezing roller 35 close to the two limit rollers 32 due to its elastic potential energy. The squeezing roller 35 is limited by the limit roller 32, so that after no force is applied to the limit frame 11, the limit frame 11 can maintain the rotation angle without self-rotation. When rotating the limit frame 11, it needs to rotate back and forth due to the existence of the external air pipe.

[0042] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An automobile casting sample display stand, comprising a limit frame (11), characterized in that: The surface of the limit frame (11) is provided with a positioning assembly (1) for clamping the automobile casting, two lifting assemblies (2) for lifting the automobile casting are symmetrically provided on both sides of the limit frame (11), and two adjusting assemblies (3) for rotating the automobile casting are symmetrically provided on the surface of the limit frame (11). The positioning assembly (1) includes two air cavity shells (12) symmetrically fixedly connected to the surface of the limit frame (11), and a trachea quick connector is installed on the surface of each air cavity shell (12). The interior of the limit frame (11) is evenly provided with a plurality of positioning holes, and a sleeve (13) is provided inside each positioning hole, and the ends of the two sleeves (13) located on the side away from the air cavity shell (12) are inclined toward the center, and one end of the sleeve (13) is inserted into the interior of the air cavity shell (12), and the interior of each sleeve (13) is slidably connected to an extrusion rod (14), and one end of the extrusion rod (14) is fixedly connected to a clamping mechanism for fixing the automobile casting.

2. The automobile casting sample display stand according to claim 1, characterized in that: The clamping mechanism comprises a positioning ball (15) provided at one end of the extrusion rod (14) away from the sleeve (13); a positioning sleeve (16) is slidably connected to the surface of the positioning ball (15); and a rubber plate (17) is fixedly connected to the side of the positioning sleeve (16) away from the positioning ball (15).

3. The automobile casting sample display stand according to claim 1, characterized in that: The lifting assembly (2) comprises a positioning seat (21) located below the limiting frame (11), a positioning groove (22) is provided inside the positioning seat (21), a linkage rod (23) rotatably connected to the positioning seat (21) is provided inside the positioning groove (22), one end of the linkage rod (23) passes through the surface of the positioning seat (21) and is fixedly connected to a first hand wheel, the surface of the linkage rod (23) is fixedly connected to two first bevel gears (24), the surface of each first bevel gear (24) is meshed with a second bevel gear (25), the second bevel gear (25) is rotatably connected to the positioning seat (21), the surface of each second bevel gear (25) is fixedly connected to a screw (26), the surface of each screw (26) is threadedly connected to a moving block (27), the two moving blocks (27) are respectively located on both sides of the limiting frame (11), and the surface of the positioning seat (21) is provided with a stabilizing mechanism for stabilizing and moving automobile castings.

4. The automobile casting sample display stand according to claim 3, characterized in that: The stabilizing mechanism comprises two limiting shells (29) symmetrically fixedly connected to the surface of the positioning seat (21), two limiting rails (28) are fixedly connected inside each limiting shell (29), two sliding grooves (210) are symmetrically opened on the surface of the moving block (27), the limiting rails (28) are inserted inside the sliding grooves (210) and are slidably connected to the moving block (27) through the sliding grooves (210), and a locking mechanism for position locking is provided inside the moving block (27).

5. The automobile casting sample display stand according to claim 4, characterized in that: The locking mechanism comprises a ratchet plate (211) fixedly connected to the inside of the limiting rail (28); two limiting grooves are symmetrically provided inside the moving block (27); a ratchet block (212) slidably connected to the moving block (27) is provided inside each of the limiting grooves; the ratchet block (212) is meshedly connected to the ratchet plate (211); a first spring (213) is provided inside the limiting groove; two ends of the first spring (213) are respectively fixedly connected to the moving block (27) and the ratchet block (212); and an unlocking mechanism is provided inside the moving block (27).

6. The automobile casting sample display stand according to claim 5, characterized in that: The unlocking structure includes a limiting hole provided inside the moving block (27), a first gear (216) is provided inside the limiting hole, the first gear (216) is slidably connected to the moving block (27) through the limiting hole, a second hand wheel is fixedly connected to the surface of the first gear (216), a connecting plate (214) is fixedly connected to the surface of each ratchet block (212), a first tooth plate (215) is fixedly connected to the surface of each connecting plate (214), two first tooth plates (215) are staggered, the first tooth plates (215) are meshed with the first gear (216), a first tooth groove (217) is provided inside the moving block (27), a second tooth groove (218) is provided inside the moving block (27), the first tooth groove (217) and the second tooth groove (218) are respectively located on both sides of the first gear (216) and are both connected to the limiting hole.

7. The automobile casting sample display stand according to claim 3, characterized in that: The adjustment component (3) includes a fixed column (33) fixedly connected to the surface of the moving block (27) and a positioning ring (31) fixedly connected to the surface of the limit frame (11), the fixed column (33) is inserted into the interior of the positioning ring (31), and a plurality of limit rollers (32) are evenly fixedly connected to the interior of the positioning ring (31), and a plurality of fixed grooves (34) are evenly opened on the surface of the fixed column (33), and a squeezing roller (35) is provided inside each of the fixed grooves (34), and the squeezing roller (35) is slidably connected to the fixed column (33) through the fixed groove (34), and the squeezing roller (35) and the limit roller (32) are in contact with each other, and a second spring (36) is provided inside each of the fixed grooves (34), and the two ends of the second spring (36) are respectively fixedly connected to the squeezing roller (35) and the fixed column (33).

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