A sand core transfer auxiliary device

Abstract

The present invention relates to an auxiliary device for transporting a sand core, comprising: an upper guiding component, which includes a lifting lug and a horizontal guiding channel; a lifting driving member disposed below the upper guiding component and a vertical pressing member connected to an output end thereof; two oppositely arranged cantilevers, the upper ends of which are defined by the horizontal guiding channel to be slidably matched in the horizontal direction, a group of inclined walls are symmetrically arranged in the middle and are correspondingly matched with both ends of the vertical pressing member to form a wedge mechanism, and each lower end is connected with a horizontal clamping member; a vertical positioning portion, which is matched with the bottom end surface of the object to be clamped to prevent circumferential rotation; a sliding guiding portion, which is slidably matched with the horizontal clamping member in the horizontal direction; the two horizontal clamping members are oppositely arranged, and a clamping surface matching the contour of the object to be clamped is formed on one adjacent side of each other, and the two clamping surfaces are used for wrapping and fitting the outer wall of the object to be clamped, so that the object to be clamped is uniformly stressed. The present invention ensures the stability and integrity during the sand core transportation process, and improves the operation convenience and transportation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of installation of casting molding tools, and in particular to an auxiliary device for transporting sand cores. Background Art

[0002] In the field of casting, for castings with large volume and large cavities inside, sand cores are usually used to assist in forming, which can reduce production costs while ensuring the dimensional requirements of products. The above-mentioned sand cores are usually heavy. If transported only by manpower, not only is the operation difficult and the efficiency low, but also the sand cores are easily damaged, thus affecting the production accuracy of the castings. For this reason, the sand cores are usually set as hollow structures to reduce the weight of the sand cores. However, the overall weight of the improved sand cores is still relatively heavy, and corresponding transfer devices are needed for transportation.

[0003] In the prior art, the sand core transfer device usually includes a lifting component and a clamping component. Among them, the clamping component usually adopts a pair of clamping parts, which clamp the sand core from the left and right sides in the horizontal direction. The clamping parts are in contact with the side wall of the sand core, and the contact surface is relatively small and the stress on the sand core is uneven, which easily leads to stress concentration and causes damage to the sand core. Moreover, there is no fixation in the axial direction of the sand core. For sand cores with large axial dimensions or axially segmented sand cores, there is a risk of separation and tipping at the upper and lower ends. If uniform clamping forces need to be applied in both the horizontal direction (radial direction) and the vertical direction (axial direction), multiple sets of driving mechanisms need to be set, resulting in a complex device structure and difficult control operation. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an auxiliary device for transporting sand cores, which ensures the stability and integrity of the sand core during the transportation process, and improves the operation convenience and transportation efficiency.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An auxiliary device for transporting sand cores includes an upper guiding component, a lifting driving member, a vertical pressing member, a horizontal driving component, a horizontal clamping component and a lower limiting component;

[0007] The upper guiding component includes an upper cover plate and a lower cover plate which are arranged in parallel at intervals up and down. The upper cover plate is provided with lifting lugs, and a horizontal guiding channel is formed between the upper cover plate and the lower cover plate;

[0008] The lifting driving member is arranged at the lower part of the lower cover plate, and the output end of the lifting driving member is connected with the vertical pressing member. A fitting surface which fits with the top of the object to be clamped is formed on the lower side of the vertical pressing member;

[0009] The horizontal driving assembly includes two oppositely arranged cantilevers. The upper ends of the two cantilevers are defined by the horizontal guiding channel to be slidably engaged in the horizontal direction. The middle parts form two symmetrically arranged inclined walls, which cooperate with the two ends of the vertical pressing member respectively to form a wedge mechanism. The lower ends of the two cantilevers are each connected with a horizontal clamping member.

[0010] The lower limiting assembly includes a vertical positioning part and a sliding guiding part.

[0011] The vertical positioning part is used for positioning with the bottom end face of the object to be clamped to prevent it from rotating circumferentially.

[0012] The sliding guiding part is used for slidably engaging with the horizontal clamping member in the horizontal direction. The two horizontal clamping members are oppositely arranged, and a clamping surface matching the contour of the object to be clamped is formed on the adjacent side of each other. The two clamping surfaces are used for wrapping and fitting the outer wall of the object to be clamped, so that the object to be clamped is uniformly stressed.

[0013] A further technical solution is:

[0014] At both ends of the vertical pressing member in the length direction, first inclined surfaces are respectively provided. On the first inclined surfaces, guide columns with a reduced cross-sectional area extending along the length direction are provided. The end of the guide column is connected with an outer limit block, and a second inclined surface opposite to the first inclined surface is formed on the inner side of the outer limit block.

[0015] On the inclined wall, a first waist-shaped groove for slidably engaging with the guide column is provided, and the first waist-shaped groove extends along the inclined direction of the inclined wall.

[0016] During the lifting and lowering process of the vertical pressing member, through the cooperation between the inner side surface of the inclined wall and the first inclined surface, and the cooperation between the outer side surface of the inclined wall and the second inclined surface, the two cantilevers move towards or away from each other in the horizontal direction.

[0017] The upper end of the cantilever is provided with a U-shaped part, which includes two parallel straight parts arranged at intervals.

[0018] The opening sides of the U-shaped parts of the two cantilevers are oppositely arranged, and the above-mentioned sliding engagement in the horizontal direction is carried out through their respective straight parts.

[0019] The upper guiding assembly further includes a limiting beam. Second waist-shaped grooves are correspondingly provided on the two straight parts of the U-shaped part. The limiting beam sequentially passes through the second waist-shaped grooves on each straight part, and is fixedly connected with the upper cover plate and the lower cover plate respectively through first pressing plates at both ends.

[0020] The structure of the lower limiting assembly includes a lower base, and the vertical positioning part is formed in the middle thereof.

[0021] The lower base is provided with a sliding guide part on each side, the structure of the sliding guide part comprises a base frame, a guide rail is provided inside the base frame, and a pressure cover is provided on the base frame;

[0022] The horizontal clamping member is located on the upper side of the lower base, and the two sides extend into the corresponding sliding guide parts, and a sliding block cooperating with the guide rail is arranged on the bottom surface;

[0023] The two horizontal clamping members are symmetrically arranged with the vertical positioning portion as the center.

[0024] The structure of the vertical positioning portion includes a concave positioning groove, in which a positioning structure matching the shape of the bottom end surface of the object to be clamped is arranged.

[0025] The horizontal clamping member comprises a horizontal transverse plate and a horizontal clamping plate detachably connected to the horizontal transverse plate, and the clamping surface is located on a side of the horizontal clamping plate away from the horizontal transverse plate.

[0026] A connecting seat is provided on the horizontal clamping member, and a connecting block engaged with the connecting seat is provided at the lower end of the cantilever. The connecting block and the connecting seat are locked by a locking member.

[0027] The two sides of the upper cover plate and the lower cover plate are respectively connected by at least two second pressing plates, and the at least two second pressing plates are arranged at intervals along the sliding matching direction of the two cantilevers.

[0028] The object to be clamped is a sand core or a casting; the object to be clamped is an integrated or split structure.

[0029] The beneficial effects of the present invention are as follows:

[0030] The invention has a reasonable and compact structure design, is easy to operate, improves the uniformity of the force on the product during transportation, and the stability during movement, ensures the integrity of the product, and at the same time improves the transportation efficiency, reduces the labor intensity, and reduces the cost.

[0031] The horizontal clamping piece of the present invention has a clamping surface that matches the outer wall contour of the object to be clamped, which not only increases the clamping area, but also makes the object to be clamped, especially the large-volume sand core with cavity thin-wall characteristics, evenly stressed, preventing damage caused by excessive local force or unstable clamping caused by uneven force.

[0032] The present invention can meet the requirements of synchronous clamping in the vertical and horizontal directions, and is applicable not only to integrated structures but also to split structures, especially to vertically split structures or objects to be clamped with larger vertical dimensions. Through vertical compression, it can effectively avoid tipping caused by excessive axial (vertical) dimensions or the disintegration of split structures due to unreliable bonding.

[0033] With only one power source of the lifting drive, the present invention can achieve vertical pressing and horizontal clamping. On the one hand, it improves the stability of the transfer process of the object to be clamped, and the clamping force and clamping speed can be adjusted by the lifting drive, with strong flexibility. On the other hand, it optimizes the overall layout of the equipment and improves the compactness of the equipment structure.

[0034] Other features and advantages of the present invention will be described in the subsequent description or understood by implementing the present invention. Brief Description of the Drawings

[0035] Figure 1 It is a schematic structural diagram of the clamping state during the working process of the embodiment of the present invention.

[0036] Figure 2 It is a schematic structural diagram of the loosening state during the working process of the embodiment of the present invention.

[0037] Figure 3 It is a schematic structural diagram of the vertical pressing member of the embodiment of the present invention.

[0038] Figure 4 It is a schematic structural diagram of the wedge mechanism formed by the cooperation of the vertical pressing member and one of the cantilevers in the embodiment of the present invention.

[0039] Figure 5 It is a schematic diagram of the relative movement state of two cantilevers in the embodiment of the present invention.

[0040] Figure 6 It is a schematic structural diagram of the embodiment of the present invention after hiding the upper cover plate.

[0041] In the figure: 1. Upper cover plate; 2. Limit beam; 3. Lower cover plate; 4. Second pressing plate; 5. Cantilever; 6. Lifting drive; 7. Vertical pressing member; 8. Outer limit block; 9. Locking member; 10. Lifting lug; 11. Connecting seat; 12. Horizontal clamping member; 13. Pressing cover; 14. Base frame; 15. Guide rail; 16. Slide block; 17. Lower base; 18. First pressing plate; 19. Clamping surface; 20. Positioning groove; 21. Central column; 22. Radial positioning block; 23. Core; 51. Inclined wall; 52. First waist-shaped groove; 53. U-shaped part; 54. Connecting block; 121. Horizontal cross plate; 122. Horizontal clamping plate; 701. First inclined surface; 702. Guide post; 801. Second inclined surface; 531. Straight part; 5311. Second waist-shaped groove. Detailed Embodiments

[0042] The following describes the detailed embodiments of the present invention with reference to the drawings.

[0043] See Figure 1 and Figure 2, The core transfer auxiliary equipment of this embodiment includes an upper guiding component, a lifting driving member 6, a vertical pressing member 7, a horizontal driving component, a horizontal clamping component, and a lower limiting component;

[0044] The upper guiding component includes an upper cover plate 1 and a lower cover plate 3 that are arranged parallel to each other at an upper and lower interval. The upper cover plate 1 is provided with a lifting lug 10, and a horizontal guiding channel is formed between the upper cover plate 1 and the lower cover plate 3;

[0045] The lifting driving member 6 is arranged at the lower part of the lower cover plate 3, and the output end of the lifting driving member 6 is connected to the vertical pressing member 7. A fitting surface that fits the top of the object to be clamped is formed on the lower side of the vertical pressing member 7;

[0046] The horizontal driving component includes two opposite cantilevers 5. The upper ends of the two cantilevers 5 are limited by the horizontal guiding channel and are slidably matched in the horizontal direction; an inclined wall 51 is provided in the middle of each cantilever 5, and the two inclined walls 51 are symmetrically arranged and cooperate with the two ends of the vertical pressing member 7 to form a wedge mechanism; a horizontal clamping member 12 is connected to the lower end of each of the two cantilevers 5;

[0047] The lower limiting component includes a vertical positioning part and a sliding guiding part;

[0048] The vertical positioning part is used for positioning with the bottom end face of the object to be clamped to prevent it from rotating circumferentially;

[0049] The sliding guiding part is used for slidably matching with the horizontal clamping member 12 in the horizontal direction. The two horizontal clamping members 12 are arranged oppositely, and a clamping surface 19 that matches the contour of the object to be clamped is formed on the adjacent side of each other. The two clamping surfaces 19 are used to wrap and fit the outer wall of the object to be clamped, so that the object to be clamped is uniformly stressed.

[0050] When this embodiment is working, after placing the object to be clamped on the vertical positioning part, the lifting driving member 6 drives the vertical pressing member 7 to move in the vertical direction. Through the action of the wedge mechanism formed by the vertical pressing member 7 and the inclined wall 51 of the cantilever 5, the vertical movement of the vertical pressing member 7 is converted into the horizontal movement of the two cantilevers 5, so that the two cantilevers 5 move towards each other, thereby driving the two horizontal clamping members 12 to move towards each other and clamping the object to be clamped in the horizontal direction. At the same time, the fitting surface of the vertical pressing member 7 fits the top of the object to be clamped, and the object to be clamped is pressed on the vertical positioning part in the vertical direction. At this time, the working condition is in the clamping state as Figure 1 shown. Then, through the lifting lug 10 provided on the upper cover plate 1, it is connected to a lifting tool to realize transfer. After being transferred to the working station, the output end of the lifting driving member 6 drives the vertical pressing member 7 to move in the reverse direction, and the two horizontal clamping members 12 move away from each other to release the object to be clamped. At this time, the working condition is in the released state as Figure 2 shown.

[0051] It can be understood that the two horizontal clamping members 12 are at the same height to form a platform that can move relative to each other, thereby ensuring the horizontality of the object to be clamped during the transportation process.

[0052] In this embodiment, only one power source, the lifting drive 6, is used to realize vertical compression and horizontal clamping, thereby ensuring that the object to be clamped remains stable during transportation, and the clamping force and clamping speed can be adjusted by the lifting drive 6.

[0053] The object to be clamped in this embodiment may be a sand core 23, a casting or other products.

[0054] The sand core 23 of this embodiment is as follows Figure 1 As shown, it is a hollow cylinder / cylindrical shape. Accordingly, the clamping surface 19 of the horizontal clamping member 12 is an inner concave arc surface that matches the curvature of the outer wall of the cylinder / cylindrical shape to ensure that it fits with the circumferential outer wall of the sand core 23 during clamping, so that the sand core 23 is evenly stressed and damage caused by increased local pressure and uneven stress due to too small a stress area and uneven stress area is prevented.

[0055] Since this embodiment can meet the requirements of synchronous clamping in the vertical and horizontal directions, it is not only applicable to integrated structures, but also to split structures, especially vertically split structures or objects to be clamped with larger vertical dimensions. For example, for a split-structure sand core comprising an upper and lower unit body, when transporting, the upper and lower unit bodies are first bonded, then placed in the vertical positioning part, and then synchronously clamped in the vertical and horizontal directions, which can effectively avoid tipping caused by excessive vertical dimensions or falling apart due to unreliable bonding.

[0056] The upper guide assembly can provide guidance for the movement of the two cantilevers 5, and the sliding guide portion of the lower limit assembly can provide guidance for the movement of the two horizontal clamping members 12, thereby ensuring the stability of the clamping movement process.

[0057] As a preferred method, see Figures 2 to 4 The vertical pressing member 7 is preferably in the shape of a long strip, and a first inclined surface 701 is provided at each end of the length direction thereof, and a guide column 702 with a reduced cross-sectional area extending along the length direction is provided on the first inclined surface 701, and an outer limit block 8 is connected to the end of the guide column 702, and a second inclined surface 801 arranged opposite to the first inclined surface 701 is formed on the inner side of the outer limit block 8;

[0058] The inclined wall 51 is provided with a first waist-shaped groove 52 for slidingly cooperating with the guide pillar 702, and the first waist-shaped groove 52 extends along the inclined direction of the inclined wall 51;

[0059] During the lifting process of the vertical pressing member 7, the inner side surface of the inclined wall 51 cooperates with the first inclined surface 701, and the outer side surface of the inclined wall 51 cooperates with the second inclined surface 801, so that the two cantilevers 5 move towards or away from each other in the horizontal direction.

[0060] As a preferred embodiment, as Figure 4 shown, the inclined walls 51 of the two cantilevers are inclined outward from top to bottom. When the vertical pressing member 7 moves downward, the second inclined surface 801 of the outer limit block 8 cooperates with the outer side surface of the inclined wall 51 to form a wedge mechanism, thereby pushing the cantilever 5 outward and causing the two cantilevers 5 to move away from each other and open. Conversely, when the vertical pressing member 7 moves upward, the first inclined surface 701 of the vertical pressing member 7 cooperates with the inner side surface of the inclined wall 51 to form a wedge mechanism, thereby pushing the cantilever 5 inward and causing the two cantilevers 5 to move towards each other for clamping.

[0061] As a preferred embodiment, a fitting clearance of 0.1 - 0.2 mm is provided between the inner side surface of the inclined wall 51 and the first inclined surface 701, and between the outer side surface of the inclined wall 51 and the second inclined surface 801.

[0062] As a preferred embodiment, referring to Figure 5 , the upper end of the cantilever 5 is provided with a U-shaped portion 53, which includes two linearly arranged portions 531 spaced parallel to each other; the U-shaped portions 53 of the two cantilevers 5 are arranged with their open sides facing each other, and are in sliding fit along the horizontal direction through their respective linearly arranged portions 531, and the sliding fit direction is as Figure 5 shown by the arrow in.

[0063] As a specific embodiment, the U-shaped portions 53 of the two cantilevers 5 are respectively a first U-shaped portion and a second U-shaped portion, and the two linearly arranged portions of the first U-shaped portion are located outside or inside the second U-shaped portion, or are arranged in a crossed manner. A form of mutual sliding fit can be formed.

[0064] As a preferred embodiment, referring to Figure 1 and Figure 2 , the upper guiding assembly further includes a limiting beam 2, and corresponding second waist-shaped grooves 5311 are provided on the two linearly arranged portions 531 of the U-shaped portion 53. The limiting beam 2 sequentially passes through the second waist-shaped grooves 5311 on each linearly arranged portion 531, and is fixedly connected to the upper cover plate 1 and the lower cover plate 3 through first pressing plates 18 at both ends.

[0065] Among them, the limiting beam 2 is fixedly connected to the upper cover plate 1 and the lower cover plate 3 as a whole through the first pressing plate 18, playing a role in limiting the movement stroke of the cantilever 5.

[0066] The limiting beam 2 is preferably perpendicular to the linearly arranged portion 531.

[0067] Referring to Figure 6, As a preferred embodiment, the structure of the lower limit component includes a lower base 17, with the vertical positioning portion formed in the middle thereof; on each side of the lower base 17, there is provided a sliding guiding portion, and the structure of the sliding guiding portion includes a base frame 14, in which a guide rail 15 is provided, and a gland 13 is provided on the base frame 14;

[0068] The horizontal clamping member 12 is located above the lower base 17, and both sides thereof extend into the corresponding sliding guiding portions, and sliders 16 cooperating with the guide rails 15 are provided on the bottom surface;

[0069] The two horizontal clamping members 12 are symmetrically arranged with the vertical positioning portion as the center.

[0070] Among them, the guide rail 15 provided in the base frame 14 of each side sliding guiding portion is preferably provided in a two-section type for respectively cooperating with the two horizontal clamping members 12. Through the sliding cooperation between the guide rail 15 and the sliders 16 on the bottom surface of the horizontal clamping member 12, on the one hand, the stability during the movement is ensured, and on the other hand, the movement resistance of the horizontal clamping member 12 is reduced, and the clamping efficiency is improved.

[0071] Among them, on each side of the lower base 17, there is provided a lower groove for arranging the sliding guiding portion to maintain the flatness and parallelism of the sliding guiding portion.

[0072] See Figure 6 , As a preferred embodiment, the structure of the vertical positioning portion includes a concave positioning groove 20, and a positioning structure matching the shape of the bottom end face of the object to be clamped is provided in the positioning groove 20.

[0073] Specifically, the positioning structure includes a central column 21, and radial positioning blocks 22 are provided around it. The positioning structure is in concave-convex cooperation with the bottom end face of the cylindrical core 23 to prevent circumferential rotation.

[0074] See Figure 6 , As a preferred embodiment, the horizontal clamping member 12 includes a horizontal cross plate 121 and a horizontal clamping plate 122 detachably connected to the horizontal cross plate 121, and the clamping surface 19 is located on the side of the horizontal clamping plate 122 away from the horizontal cross plate 121.

[0075] The horizontal clamping plate 122 can be set in various specifications to obtain clamping surfaces 19 of various specifications, sizes and shapes. By replacing the horizontal clamping plates 122 of different specifications, the clamping requirements for different objects to be clamped are met.

[0076] See Figure 6 , As a preferred embodiment, a connecting seat 11 is provided on the horizontal clamping member 12, a connecting block 54 fitted with the connecting seat 11 is provided at the lower end of the cantilever 5, and the connecting block 54 and the connecting seat 11 are locked by a locking member 9.

[0077] As a preferred embodiment, a support beam extending vertically downward is provided on the lower side of the inclined wall 51 of the cantilever 5, and the connecting block 54 is arranged at the lower end of the support beam.

[0078] As a preferred embodiment, the connecting seat 11 is arranged on the horizontal cross plate 121.

[0079] As a preferred embodiment, through holes corresponding in position are provided on the connecting block 54 and the connecting seat 11. The locking member 9 includes a bolt that cooperates with the through hole, and the bolt is connected to a nut to lock the connecting block 54 and the connecting seat 11. Specifically, the gap between the through hole and the bolt is 0.3 mm.

[0080] As a preferred embodiment, as Figure 1 shown, both sides of the upper cover plate 1 and the lower cover plate 3 are respectively connected by at least two second pressing plates 4, and the at least two second pressing plates 4 are arranged at intervals along the sliding direction of the two cantilevers 5.

[0081] Among them, a gap of 0.1 - 0.15 mm is formed between the U-shaped portion 53 at the upper end of the cantilever 5 and the upper cover plate 1 and the lower cover plate 3, so as not to interfere with the movement of the cantilever 5.

[0082] As a preferred embodiment, the lifting drive member 6 is an electric telescopic rod, and its fixed end part and the power supply part are both fixedly arranged on the lower cover plate 3 and can be driven by remote control.

[0083] As a preferred embodiment, the lifting lugs 10 are arranged at the four corners of the top surface of the upper cover plate 1 and are connected to the hook or sling of the lifting device to ensure that the entire device moves parallelly during the lifting process and prevent rotation.

[0084] The present invention improves the uniformity of the force on the product during the transfer process and the stability during the movement process, which is beneficial to improving the qualified rate of the casting after forming, reducing the rejection rate, reducing the labor intensity, and reducing the cost.

[0085] Those of ordinary skill in the art can understand that the above description is only a preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sand core transport auxiliary device, characterized in that: It comprises an upper guide assembly, a lifting drive member (6), a vertical pressing member (7), a horizontal drive assembly, a horizontal clamping assembly and a lower limit assembly; The upper guide assembly comprises an upper cover plate (1) and a lower cover plate (3) which are arranged in parallel with each other at an upper and lower interval; a lifting lug (10) is provided on the upper cover plate (1); and a horizontal guide channel is formed between the upper cover plate (1) and the lower cover plate (3); The lifting drive member (6) is arranged at the lower part of the lower cover plate (3), the output end of the lifting drive member (6) is connected to the vertical pressing member (7), and the lower side of the vertical pressing member (7) is formed with a fitting surface that fits with the top of the object to be clamped; The horizontal drive assembly comprises two cantilevers (5) arranged opposite to each other, the upper ends of the two cantilevers (5) are limited by the horizontal guide channel to slide in the horizontal direction, the middle parts form two symmetrically arranged inclined walls (51) and are correspondingly matched with the two ends of the vertical pressing member (7) to form a wedge-shaped mechanism, and the lower ends are each connected to a horizontal clamping member (12); The lower limit assembly includes a vertical positioning portion and a sliding guide portion; The vertical positioning portion is used to position with the bottom end surface of the object to be clamped to prevent it from rotating in the circumferential direction; The sliding guide portion is used to slide with the horizontal clamping member (12) in a horizontal direction, the two horizontal clamping members (12) are arranged opposite to each other, and form a clamping surface (19) matching the contour of the object to be clamped on one side adjacent to each other, and the two clamping surfaces (19) are used to wrap and fit the outer wall of the object to be clamped, so that the object to be clamped is evenly stressed; The vertical pressing member (7) is provided with first inclined surfaces (701) at both ends in the length direction, and a guide column (702) with a reduced cross-sectional area extending along the length direction is provided on the first inclined surface (701), and an outer limit block (8) is connected to the end of the guide column (702), and a second inclined surface (801) arranged opposite to the first inclined surface (701) is formed on the inner side of the outer limit block (8); The inclined wall (51) is provided with a first waist-shaped groove (52) for slidingly cooperating with the guide column (702), and the first waist-shaped groove (52) extends along the inclined direction of the inclined wall (51); During the process of descending or ascending, the vertical pressing member (7) causes the two cantilevers (5) to move toward or away from each other in the horizontal direction by the inner side surface of the inclined wall (51) cooperating with the first inclined surface (701) and the outer side surface of the inclined wall (51) cooperating with the second inclined surface (801); The upper end of the cantilever (5) is provided with a U-shaped portion (53), which comprises two linear portions (531) arranged in parallel and spaced apart from each other; The opening sides of the U-shaped portions (53) of the two cantilevers (5) are arranged opposite to each other, and are slidably matched in the horizontal direction through their respective straight portions (531); The upper guide assembly further comprises a limiting beam (2), and second waist-shaped grooves (5311) are correspondingly provided on the two straight portions (531) of the U-shaped portion (53). The limiting beam (2) passes through the second waist-shaped grooves (5311) on each of the straight portions (531) in sequence, and is fixedly connected to the upper cover plate (1) and the lower cover plate (3) at both ends via first pressing plates (18).

2. The sand core transport auxiliary equipment according to claim 1, characterized in that: The structure of the lower limit assembly comprises a lower base (17), the middle of which forms the vertical positioning portion; A sliding guide portion is provided on each side of the lower base (17), the structure of the sliding guide portion comprising a base frame (14) having a guide rail (15) therein, and a pressure cover (13) is provided on the base frame (14); The horizontal clamping member (12) is located on the upper side of the lower base (17), and the two sides extend into the corresponding sliding guide parts, and a sliding block (16) cooperating with the guide rail (15) is provided on the bottom surface; The two horizontal clamping members (12) are symmetrically arranged with the vertical positioning portion as the center.

3. The sand core transport auxiliary equipment according to claim 2, characterized in that: The structure of the vertical positioning portion comprises an inwardly concave positioning groove (20), wherein a positioning structure matching the shape of the bottom end surface of the object to be clamped is provided in the positioning groove (20).

4. The sand core transport auxiliary equipment according to claim 1, characterized in that: The horizontal clamping member (12) comprises a horizontal transverse plate (121) and a horizontal clamping plate (122) detachably connected to the horizontal transverse plate (121), and the clamping surface (19) is located on a side of the horizontal clamping plate (122) away from the horizontal transverse plate (121).

5. The sand core transport auxiliary equipment according to claim 1, characterized in that: A connecting seat (11) is provided on the horizontal clamping member (12), and a connecting block (54) engaged with the connecting seat (11) is provided at the lower end of the cantilever (5), and the connecting block (54) and the connecting seat (11) are locked by a locking member (9).

6. The sand core transport auxiliary equipment according to claim 1, characterized in that: The two sides of the upper cover plate (1) and the lower cover plate (3) are respectively connected via at least two second pressing plates (4), and the at least two second pressing plates (4) are arranged at intervals along the sliding matching direction of the two cantilevers (5).

7. The sand core transport auxiliary equipment according to claim 1, characterized in that: The object to be clamped is a sand core (23) or a casting; the object to be clamped is an integrated or split structure.

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