Chain spiral elevator

Abstract

The invention relates to the field of material storage and conveying, and discloses a chain spiral elevator which comprises a base and a support movably attached to the base, a spiral lifting module used for lifting materials is arranged on the base, and a limiting assembly used for achieving relative fixing of the base and the support is arranged on the support. A plurality of shaft heads used for supporting materials are rotationally installed on the support, the shaft heads are divided into two rows and are symmetrically distributed, and sliding assemblies corresponding to the limiting assemblies in position are arranged on the shaft heads. Through cooperation of the support, the shaft head, the sliding assembly, the limiting assembly and the like, materials can be sequentially stacked from top to bottom, follow-up transferring and using are facilitated, the materials cannot deviate, and the quality can be guaranteed. And during stacking, the support can be ensured to be in a relatively fixed state, sequential feeding of materials is facilitated, the support can be automatically released from the limiting state after stacking is completed, and follow-up replacement and movement of the support are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of material storage and transportation, and in particular to a chain screw elevator. Background Art

[0002] Flexible materials (such as plastic film, thin paper, aluminum foil, etc.) are usually rolled up on rolls after processing for storage, palletizing and transportation. Currently, there is a method in the prior art of arranging the rolls vertically for storage.

[0003] For example, Chinese patent publication number CN111483501A discloses a plastic film roll stacking robot, which includes a conveying plate and multiple groups of positioning devices vertically arranged on the conveying plate. The positioning device includes a mounting plate fixedly arranged on the top of the conveying plate and a ring plate arranged above the mounting plate. The mounting plate and the ring plate are fixedly connected by a buffer mechanism. A positioning shaft that penetrates the ring plate is rotatably arranged at the top center of the mounting plate. A winding device is symmetrically arranged on the left and right sides of the conveying plate. A steel wire rope is connected to the outer wall of the positioning shaft. The end of the steel wire rope is fixed and wound on the winding device. The plastic film roll is vertically sleeved on the outside of the positioning shaft and fixed by a limiting mechanism to prevent the plastic film roll from rolling or shaking greatly during the handling process. The winding device cooperates with the steel wire rope to pull the positioning shaft to tilt, reduce the distance between the top of the positioning shaft and the conveying plate, and facilitate the placement of the plastic film roll.

[0004] The materials in this application are stored in a vertical manner, which can only be used with hollow rollers. When the film is placed vertically, it is easy to deviate up and down due to the existence of the roller, which affects the storage quality of the material and is not conducive to subsequent transportation and use. There are certain limitations in use.

[0005] Therefore, it is necessary to provide a chain screw elevator to solve the above-mentioned technical problems. Summary of the invention

[0006] The object of the present invention is to provide a chain screw elevator to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, a chain screw elevator is designed which can ensure the quality of materials after storage and is convenient for later transportation and use.

[0008] Based on the above ideas, the present invention provides the following technical solutions: a chain spiral elevator, comprising a base and a bracket movably fitted with the base, a spiral lifting module for lifting materials is arranged on the base, a limiting assembly for achieving relative fixation of the base and the bracket is arranged on the bracket, a plurality of shaft heads for supporting materials are rotatably mounted on the bracket, the plurality of shaft heads are divided into two rows and are symmetrically distributed, and a sliding assembly corresponding to the position of the limiting assembly is arranged on the shaft head; when the material falls onto the shaft head, it can contact the sliding assembly, and the relative fixation between the base and the bracket can be released through the sliding assembly and the limiting assembly.

[0009] As a further solution of the present invention: the shaft head is configured to deflect upward through the rotating shaft and is limited to a horizontal state; when the spiral lifting module drives the material to rise, the shaft head can be pushed to deflect upward.

[0010] As a further solution of the present invention: the limiting assembly includes a sliding rod that slides with the bracket, the top of the sliding rod extends from the side wall of the bracket and corresponds to the sliding assembly, and the bottom of the sliding rod is fixedly installed with a buckle that movably engages with the base, and the surface of the sliding rod away from the shaft head is fixedly installed with a first spring on the bracket, and the first spring makes the sliding rod tend to move toward the shaft head.

[0011] As a further solution of the present invention: a vertical groove for the sliding rod to slide is opened inside the bracket, and a slot engaged with the buckle is opened on the top of the base; when the bracket is placed on the base, the buckle drives the sliding rod to retract into the bracket and squeeze the first spring.

[0012] As a further solution of the present invention: the sliding assembly includes a protrusion and a push rod that slide with the shaft head, and the opposite sides of the protrusion and the push rod are provided with inclined surfaces in the same direction. When the protrusion descends based on the shaft head, the inclined surface can push the push rod to extend from the shaft head, and when extending, the push rod can push the sliding rod to move.

[0013] As a further solution of the present invention: the sliding assembly is arranged on two shaft heads in the bottom row; when materials are placed on the shaft heads in the bottom row, the relative fixation between the base and the bracket can be released.

[0014] As a further solution of the present invention: a sliding assembly is arranged on each of the shaft heads, and a second spring is arranged between the push rod and the shaft head, so that the push rod has a tendency to move toward the direction of the protrusion through the second spring.

[0015] As a further solution of the present invention: a moving assembly is provided between the push rod and the shaft head; when the material falls onto the shaft head, the moving assembly can be driven to abut against the end of the material through the protrusion, the inclined surface and the push rod.

[0016] As a further solution of the present invention: the moving assembly includes a gear rotatably installed in the shaft head, an upper rack slidingly matched with the shaft head and a lower rack fixedly connected to the top rod, the upper rack and the lower rack are both connected to the gear transmission, and the upper rack and the lower rack are symmetrically staggered based on the gear, and a splint is fixedly installed on the end of the upper rack.

[0017] As a further solution of the present invention: the sliding rod corresponds to the position of the push rod on the lowest shaft head.

[0018] Compared with the prior art, the beneficial effects of the present invention are: through the cooperation between the bracket, the shaft head, the sliding assembly and the limit assembly, the materials can be stacked from top to bottom in sequence, which is convenient for subsequent transportation and use, and the materials will not be offset to ensure the quality. In addition, during stacking, the bracket can ensure a relatively fixed state, which is conducive to the sequential loading of materials. After the stacking is completed, the bracket can automatically release the limit state, which is convenient for the subsequent replacement and movement of the bracket, which can effectively improve the overall stacking efficiency and reduce the burden on workers, and the overall practicality is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the support and shaft head structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the bracket, the sliding rod and the first spring of the present invention;

[0023] Figure 4 for Figure 3 A magnified view of the structure at center;

[0024] Figure 5 It is a schematic diagram of the structure of the bump and the ejector pin of the present invention;

[0025] Figure 6 It is a schematic diagram of the shaft head and the bump structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the upper rack and the clamping plate structure of the present invention;

[0027] Figure 8 for Figure 7 A magnified view of the structure at B in the middle;

[0028] Fig. 9 It is a schematic diagram of the structure of the shaft head and telescopic assembly of the present invention;

[0029] Fig.10 It is a schematic diagram of the sleeve and short rod structure of the present invention.

[0030] In the figure: 1, base; 2, spiral lifting module; 3, bracket; 4, shaft head; 5, sliding assembly; 6, limit assembly; 7, moving assembly; 8, telescopic assembly; 101, slot; 301, vertical slot; 401, cavity; 501, bump; 502, push rod; 503, inclined plane; 601, slide rod; 602, first spring; 603, buckle; 701, gear; 702, lower rack; 703, upper rack; 704, splint; 801, sleeve; 802, short rod; 803, third spring. DETAILED DESCRIPTION

[0031] Embodiment 1:

[0032] See also Figures 1 to 5 The embodiment of the present invention provides a chain spiral elevator, which is mainly used to realize vertical stacking of roll materials for easy transportation and use. It specifically includes a base 1 and a bracket 3 movably fitted with the base 1, and a limiting component 6 for realizing relative fixation of the base 1 and the bracket 3 is arranged on the bracket 3. The base 1 is provided with a spiral lifting module 2 for lifting the roll materials.

[0033] The spiral lifting module 2 can be lifted by chain link combination. Under normal conditions, the chain links can be rolled up in the base 1, and after starting, the chain links can be combined to form a circular shaft, thereby realizing the lifting function. It has the advantage of occupying little space in the up and down directions. It is an existing mature technology and will not be described in detail here. It should be noted that if Figure 1 As shown, the lifting end of the spiral lifting module 2 also includes a U-shaped base, which is used to place the roll material and to lift the roll material.

[0034] Furthermore, the bracket 3 is rotatably mounted with an axle head 4 for supporting the roll material. The axle heads 4 have two rows and are distributed one by one. When the roll material falls, it falls on the two axle heads 4 in the same row. The two axle heads 4 in one row are provided with sliding components 5 corresponding to the position of the limit components 6. The sliding components 5 protrude relative to the axle heads 4. When the roll material falls on the axle heads 4, it can contact the sliding components 5, and the sliding components 5 contact the limit components 6, thereby releasing the relative fixation between the base 1 and the bracket 3.

[0035] In the above structure, the shaft head 4 is configured to be able to deflect upwards through the rotating shaft, and is limited to be in a horizontal state. When the spiral lifting module 2 drives the roll material to rise, the two ends of the roll material can push the shaft head 4 to deflect upwards, so that the roll material can pass over the shaft head 4; when the roll material is separated from the shaft head 4, the shaft head 4 can automatically reset to a horizontal state under the action of gravity. At this time, if the spiral lifting module 2 drives the roll material to descend, the roll material can automatically fall onto the shaft head 4.

[0036] In this embodiment, the shaft heads 4 have two columns and four rows, and the sliding components 5 are arranged on the two shaft heads 4 in the bottom row. At this time, the lifting method of the spiral lifting module 2 is: first drive the roll material to rise to the two shaft heads 4 in the top row, and then drive the next roll material to descend in sequence until the two shaft heads 4 in the bottom row also carry roll materials, and at this time, the bottom roll material is in contact with the sliding component 5.

[0037] Reference Figures 3 to 5 In this embodiment, preferably: the limiting component 6 includes a sliding rod 601 that slides left and right with the bracket 3, one end of the sliding rod 601 protrudes from the side wall of the bracket 3 and corresponds to the sliding component 5, and the other end of the sliding rod 601 is fixedly installed with a buckle 603 that is movably engaged with the base 1, and the surface of the sliding rod 601 away from the shaft head 4 is fixedly installed with a first spring 602 on the bracket 3. Under the action of the first spring 602, the sliding rod 601 has a tendency to approach the shaft head 4.

[0038] Correspondingly, the interior of the bracket 3 is provided with a vertical slot 301 for the slide bar 601 to slide left and right, and the top of the base 1 is provided with a slot 101 engaged with the buckle 603. The buckle 603 has an arc surface, and when the bracket 3 is placed vertically on the base 1, the buckle 603 can drive the slide bar 601 to move away from the shaft head 4, so that the bracket 3 can be inserted into the base 1, and then the buckle 603 and the slide bar 601 can move toward the shaft head 4 under the action of the first spring 602, so that the buckle 603 is engaged with the slot 101, so that the bracket 3 and the base 1 are relatively fixed, which can effectively ensure the overall stability of the roll material when it is lifted.

[0039] Reference Figures 3 to 5 In this embodiment, preferably, the sliding assembly 5 includes a protrusion 501 and a push rod 502 that are slidably matched with the shaft head 4. The sliding direction of the protrusion 501 based on the shaft head 4 is perpendicular to the sliding direction of the push rod 502 based on the shaft head 4. In this embodiment, the protrusion 501 slides up and down based on the shaft head 4 and its top extends from the top of the shaft head 4, while the push rod 502 slides left and right based on the shaft head 4 and its end corresponds to the position of the slide rod 601. The opposite side of the protrusion 501 and the push rod 502 are both provided with inclined surfaces 503 in the same direction. When the protrusion 501 descends based on the shaft head 4, the push rod 502 can be pushed to extend from the shaft head 4 through the inclined surface 503. At this time, the push rod 502 can contact with the slide rod 601 and drive the slide rod 601 to move in a direction away from the shaft head 4.

[0040] Correspondingly, a cavity 401 is opened inside the shaft head 4 for the sliding of the protrusion 501 and the push rod 502, and the protrusion 501 is arranged on the side of the shaft head 4 away from the bracket 3, so that when the rolled material falls on the shaft head 4, it can be ensured to form contact with the protrusion 501; and when the push rod 502 deflects upward with the shaft head 4, it can still correspond to the sliding rod 601, and will not be misplaced to cause the push rod 502 to fall off the shaft head 4.

[0041] The first spring 602 acts on the slide bar 601 to make it tend to approach the shaft head 4, so that the surface of the slide bar 601 can contact the shaft head 4 and push the push rod 502 to extend and retract into the shaft head 4, so that the projection 501 is in a state of extending relative to the shaft head 4 in the initial state through the inclined surface 503. In other words, the first spring 602 acts on the slide bar 601 to move and reset it, and also acts on the projection 501 and the push rod 502, so that the projection 501 can reach a state of extending relative to the shaft head 4.

[0042] When in use, the spiral lifting module 2 starts to drive the roll material to rise. When rising, the two ends of the roll material can contact the shaft head 4 and cause the shaft head 4 to deflect upward. When it moves to the top of the uppermost shaft head 4, the spiral lifting module 2 drops, causing the roll material to fall on the two shaft heads 4 in the uppermost row. Then, the spiral lifting module 2 drives the next roll material to fall on the two shaft heads 4 in the next row in the same way. Finally, the roll material falls on the two shaft heads 4 in the lowermost row and contacts the protrusion 501. At this time, the shaft head 4 horizontally supports the roll material, and the roll material pushes the protrusion 501 to shrink into the shaft head 4. The protrusion 501 makes the top rod 502 extend from the shaft head 4 through the inclined surface 503 and pushes the slide bar 601, so that the slide bar 601 moves away from the shaft head 4 and drives the buckle 603 to move synchronously, thereby releasing the relative limit between the bracket 3 and the base 1. At this time, this bracket 3 is full of roll materials and can be removed and replaced with the next bracket 3.

[0043] In summary, through the coordination of the shaft head 4, the protrusion 501, the top rod 502 and the slide rod 601, the roll materials can be stacked from top to bottom in sequence, which is convenient for subsequent transportation and use, and the roll materials will not be offset to ensure the quality, and there is no restriction on whether the roll is hollow. During stacking, the bracket 3 can ensure a relatively fixed state, which is conducive to the sequential loading of the roll materials. After the stacking is completed, the bracket 3 can automatically release the limit state, which is convenient for the subsequent replacement and movement of the bracket 3, which can effectively improve the overall stacking efficiency and reduce the burden on workers, and the overall practicality is higher.

[0044] Embodiment 2:

[0045] See also Figures 1 to 8On the basis of the first embodiment, considering that the two side ends of the roll material cannot form a fitting correspondence with the shaft head 4 when it falls onto the shaft head 4, the roll material may also deviate to the left and right, affecting the overall stacking effect and subsequent use effect.

[0046] For this purpose, the shaft head 4 is improved: now a moving component 7 is provided between the top rod 502 and the shaft head 4, when the roll material falls onto the shaft head 4, the protrusion 501 drives the top rod 502 to move through the inclined surface 503, and the top rod 502 abuts against the end of the roll material through the moving component 7, thereby effectively limiting the left and right directions of the roll material, and can be suitable for rolls of different lengths.

[0047] In this embodiment, a sliding assembly 5 needs to be provided on each shaft head 4, so that each shaft head 4 can correspond to the end of the roll material, so as to limit the position of each roll material, and is no longer limited to the shaft head 4 in the bottom row. At the same time, a second spring (not shown in the figure) needs to be provided between the top rod 502 and the cavity wall of the cavity 401, and the second spring makes the top rod 502 have a tendency to move toward the convex block 501, so as to realize the positioning of the top rod 502 and the reset after the movement.

[0048] Reference Figures 6 to 8 In this embodiment, preferably: the moving assembly 7 includes a gear 701 rotatably mounted in the shaft head 4, an upper rack 703 slidably matched with the shaft head 4, and a lower rack 702 fixedly connected to the top rod 502, the upper rack 703 and the lower rack 702 are both connected to the gear 701 in a transmission manner, and the upper rack 703 and the lower rack 702 are symmetrically staggered based on the gear 701, so that when the gear 701 rotates, the upper rack 703 and the lower rack 702 form a reverse movement process, and the end of the upper rack 703 is fixedly mounted with a clamping plate 704 corresponding to the end of the roll material. When the top rod 502 moves, it can drive the clamping plate 704 to move toward the convex block 501, and then contact the end of the roll material.

[0049] Among them, the end of the clamping plate 704 away from the upper rack 703 can be fixedly installed with a soft cushion layer, or the end can also be elastically connected to a resistance plate (not shown in the figure) through a spring, and the spring makes the resistance plate have a tendency to move in the direction of the protrusion 501; when the clamping plate 704 moves, the spring can drive the resistance plate to contact the end of the roller material.

[0050] When in use, the roll material can be stacked from top to bottom in sequence through the structures such as the shaft head 4, the protrusion 501 and the slide bar 601. During stacking, the bracket 3 can ensure a relatively fixed state. After the stacking is completed, the bracket 3 can automatically release the limit state. The working process and effect of this part are the same as those in the first embodiment, and will not be repeated here. The difference is that when the roll material falls on the shaft head 4 (any row), it can drive the protrusion 501 to drop and shrink into the shaft head 4. The protrusion 501 drives the push rod 502 to extend from the shaft head 4 through the inclined surface 503. The push rod 502 drives the clamping plate 704 to move through the lower rack 702, the gear 701 and the upper rack 703, so that the clamping plate 704 can contact the end of the roll material. When the roll material falls onto the shaft head 4 in the bottom row, the bottom push rod 502 drives the lower rack 702 to move, and on the other hand, it can contact the slide bar 601 and push the slide bar 601 to move away from the protrusion 501.

[0051] Compared with the first embodiment, through the coordination of the structures such as the top rod 502, the protrusion 501, the gear 701 and the clamping plate 704, when the roll material falls on the shaft head 4, the clamping plate 704 on the shaft head 4 can be moved accordingly and contact the end of the roll material, thereby realizing effective position limiting in the left and right directions of the roll material, ensuring the overall stacking effect and avoiding displacement during subsequent transportation, and being applicable to rolls of different lengths and sizes, effectively improving the overall scope of application. The overall solution is combined with the setting of the shaft head 4, and the movement process of the protrusion 501 is driven by the roll material contacting the shaft head 4, and it is conducive to the direct use of the roll material from the bracket 3 in the later stage, and the applicability is stronger.

[0052] Embodiment three:

[0053] See also Figures 1 to 10 On the basis of the second embodiment, considering that during palletizing, the spiral lifting module 2 needs to drive the roller material to rise to the shaft head 4 of the top row, and then it can be lowered in sequence to complete the overall palletizing, during long-term use, there is a certain burden on the spiral lifting module 2 in this application.

[0054] To this end, the shaft head 4 is further improved: at this time, a telescopic component 8 is provided on the shaft head 4, which is movably fitted with the bottom of the adjacent shaft head 4 above. The telescopic component 8 can realize the front and rear limit of the roll material when it rises, so that the roll material can form an upper and lower correspondence with the shaft head 4 above.

[0055] In this embodiment, the lifting method of the spiral lifting module 2 is adjusted, and the spiral lifting module 2 only needs to drive the roll material to rise above the shaft head 4 in the lowest row, and the roll material can fall on the shaft head 4 in the lowest row. Then the spiral lifting module 2 drives the next roll material to rise, and at this time the roll material originally located on the shaft head 4 in the lowest row is pushed up by the roll material below, and finally the roll material below falls on the shaft head 4 in the lowest row, and the roll material originally located on the shaft head 4 in the lowest row is transferred to the shaft head 4 in the second to last row.

[0056] Correspondingly, in this embodiment, the slide bar 601 can correspond to the top row of top rods 502, so that the slide bar 601 will be driven to move only after the top row of top rods 502 move, thereby releasing the relative fixation of the bracket 3, thereby adapting to the process in which the roller materials push each other and rise in sequence.

[0057] Reference Fig. 9 and Fig.10 In this embodiment, preferably, the telescopic assembly 8 includes two sleeves 801 fixedly mounted on the shaft head 4, the sleeves 801 are U-shaped and the two sleeves 801 are symmetrically distributed front to back, and the interiors of the two sleeves 801 are elastically connected with short rods 802 through third springs 803. The third springs 803 make the short rods 802 have an upward tendency, so that the short rods 802 can fit with the bottom of the adjacent shaft head 4 above.

[0058] The short rod 802 can push the upper adjacent shaft head 4 to deflect upward under the action of the third spring 803, but the roll material itself needs to push the shaft head 4 to deflect upward when it is lifted, so the setting of the short rod 802 will not interfere with the movement of the roll material, nor will it affect the falling support of the roll material to the shaft head 4. The setting of the short rod 802 is beneficial to reduce the number of frictions between the end of the roll and the shaft head 4, reduce the loss of the shaft head 4 and the end of the roll, and relatively extend the service life of both.

[0059] It should be noted that the surface of the short rod 802 close to the protrusion 501 is flush with the surface of the sleeve 801 close to the protrusion 501, so that the short rod 802 and the sleeve 801 can provide the same contact effect for the end of the roll material. The two sleeves 801 (two short rods 802) form a spacing that matches the diameter of the roll to provide support for the roll material to fall, and can achieve front and rear limit of the roll material when it rises.

[0060] Furthermore, the sleeve 801 can be inserted into the shaft head 4 and slide forward and backward with the shaft head 4, and a fourth spring (not shown in the figure) is fixedly installed between the two sleeves 801. The fourth spring makes the two sleeves 801 tend to approach each other, so that the distance between the two sleeves 801 can be adjusted accordingly, and then it can be adapted to the use of roller materials of different diameters, which can further improve the overall applicability.

[0061] When in use, the roll materials can be stacked in order from top to bottom through the structures such as the shaft head 4, the protrusion 501 and the slide bar 601; through the structures such as the top rod 502, the protrusion 501 and the clamping plate 704, the clamping plate 704 can be driven to move correspondingly and contact with the end of the roll material to achieve effective limit in the left and right directions of the roll material. The working process and effect of this part are the same as those in the second embodiment and will not be repeated here. The difference is that the spiral lifting module 2 starts to drive the roll material to fall onto the shaft head 4 of the bottom row first, and then the spiral lifting module 2 drives the next roll material to rise to the same height, so that the roll material below pushes the roll material above to move, and the roll material above can achieve limit in the front and rear directions through the sleeve 801 and the short rod 802 when moving, and finally the roll material below falls onto the shaft head 4 of the bottom row, and the roll material above falls onto the shaft head 4 of the upper row.

[0062] Compared with the second embodiment, the coordination of the shaft head 4, sleeve 801, short rod 802 and third spring 803 and other structures forms a process in which the roll materials push each other to rise in sequence, so that the spiral lifting module 2 can complete the overall stacking without rising to a high height, effectively reducing the lifting burden on the spiral lifting module 2, thereby relatively extending its service life; and the roll materials can be limited in front and back when rising without offset, which can ensure the overall stacking effect of the roll materials. The overall solution is combined with the setting of the shaft head 4, shortening the moving stroke of the roll materials driven by the spiral lifting module 2, and thus relatively improving the overall stacking efficiency; at the same time, the upper and lower shaft heads 4 form contact through the sleeve 801 and the short rod 802, which can achieve the effect of common support, which is conducive to ensuring the overall stability and meeting more requirements in actual use.

Claims

1. A chain screw elevator, comprising a base and a bracket movably fitted with the base, wherein a screw lifting module for lifting materials is arranged on the base, characterized in that: The bracket is provided with a limiting assembly for achieving relative fixation of the base and the bracket, and a plurality of shaft heads for supporting materials are rotatably installed on the bracket, the plurality of shaft heads are divided into two rows and are symmetrically distributed, and a sliding assembly corresponding to the position of the limiting assembly is provided on the shaft head; when the material falls onto the shaft head, it can contact the sliding assembly, and the relative fixation between the base and the bracket can be released through the sliding assembly and the limiting assembly.

2. The chain screw elevator according to claim 1, characterized in that: The shaft head is configured to deflect upward through the rotating shaft and is limited to a horizontal state; when the spiral lifting module drives the material to rise, the shaft head can be pushed to deflect upward.

3. The chain screw elevator according to claim 1, characterized in that: The limiting assembly includes a sliding rod that slides with the bracket, the top of the sliding rod extends from the side wall of the bracket and corresponds to the sliding assembly, and the bottom of the sliding rod is fixedly installed with a buckle that movably engages with the base, and the surface of the sliding rod away from the shaft head is fixedly installed with a first spring on the bracket, and the first spring makes the sliding rod tend to move toward the shaft head.

4. The chain screw elevator according to claim 3, characterized in that: The inside of the bracket is provided with a vertical groove for the sliding rod to slide, and the top of the base is provided with a slot engaged with the buckle; when the bracket is placed on the base, the buckle drives the sliding rod to shrink into the bracket and squeeze the first spring.

5. The chain screw elevator according to claim 3, characterized in that: The sliding assembly includes a protrusion and a push rod that slide with the shaft head. The opposite sides of the protrusion and the push rod are provided with inclined surfaces in the same direction. When the protrusion descends based on the shaft head, the inclined surface can push the push rod to extend from the shaft head. When extending, the push rod can push the sliding rod to move.

6. The chain screw elevator according to any one of claims 1 to 5, characterized in that: The sliding components are arranged on the two shaft heads in the bottom row; when materials are placed on the shaft heads in the bottom row, the relative fixation between the base and the bracket can be released.

7. The chain screw elevator according to claim 5, characterized in that: Each of the shaft heads is provided with a sliding assembly, and a second spring is provided between the push rod and the shaft head, so that the push rod has a tendency to move toward the direction of the protrusion through the second spring.

8. The chain screw elevator according to claim 7, characterized in that: A moving assembly is provided between the push rod and the shaft head; when the material falls onto the shaft head, the moving assembly can be driven to abut against the end of the material through the convex block, the inclined surface and the push rod.

9. The chain screw elevator according to claim 8, characterized in that: The moving assembly includes a gear rotatably installed in the shaft head, an upper rack slidably matched with the shaft head, and a lower rack fixedly connected to the top rod. The upper rack and the lower rack are both connected to the gear transmission, and the upper rack and the lower rack are symmetrically staggered based on the gear, and a splint is fixedly installed on the end of the upper rack.

10. The chain screw elevator according to claim 7, characterized in that: The slide bar corresponds to the position of the push rod on the lowest shaft head.

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