A three-axis lifting sand mixer

Abstract

This utility model relates to a three-axis lifting sand mixer, including a sand mixing device. The sand mixing device includes a body, which includes a front end plate and a rear end plate. A track plate is provided on the side of the front end plate near the rear end plate. A sand mixing trough is disposed between the front end plate and the rear end plate. The sand mixing trough is composed of two mutually cooperating semi-shells, both of which are rotatably connected to the rear end plate along a vertical rotation axis. Support wheels that can move along the track plate are rotatably connected to each semi-shell. When the two semi-shells are closed together, the support wheels are located on the track plate. By setting up support wheels and track plates, this utility model allows the operator to simply place the support wheels on the track plate when closing the sand mixing trough, thus providing vertical auxiliary support and positioning for the sand mixing trough and ensuring accurate docking of the two semi-shells, thereby solving the technical problem of difficulty in closing the sand mixing trough.

Description

Technical Field

[0001] This application relates to the technical field of sand mixing equipment, and more particularly to a three-axis lifting sand mixer. Background Technology

[0002] Sand mixers are key equipment in the foundry process for mixing molding sand. Their main function is to thoroughly mix sand particles, resin, hardener, and other components, ensuring that the resin and hardener are effectively distributed and evenly coated on the sand particle surface, thus forming a sand mold that meets the requirements of the molding process. Currently, the most commonly used sand mixing equipment in the foundry industry is the twin-arm sand mixer, which consists of two stages of free-rotating devices. The first stage is a conveying device, mainly used for transporting raw sand; the second stage is the mixing device, used to achieve efficient sand mixing. However, in the molding of large or extra-large parts, existing twin-arm sand mixers are limited by the rotation angle and arm length, making it difficult to fully cover the molding area. Often, there are blind spots in the sand mixing, requiring manual sand receiving and filling to complete the operation, reducing efficiency and automation levels.

[0003] To meet the demands of large and extra-large component designs, existing technology discloses a three-arm sand mixer, consisting of three stages of free-rotating devices. From the feed end to the discharge end, these consist of a primary conveying device, a secondary conveying device, and a sand mixing device, all connected along the material transport direction. The sand mixing device comprises a motor, machine body, sand mixing trough, and sand mixing shaft assembly. The sand mixing trough has a split structure, consisting of two semi-circular shells that can open 180°, facilitating cleaning and maintenance of the sand mixing shaft and blades within the trough.

[0004] However, the above-mentioned three-arm sand mixer also has the following problems: due to the long arm length of the sand mixing tank, after it is opened, the two half-shells near the sand outlet are prone to drooping due to the influence of the arm length and their own weight, making it difficult for the two half-shells to accurately align during the closing process, resulting in difficulty in closing the sand mixing tank. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a three-axis lifting sand mixer. By setting support wheels on the outside of the sand mixing tank and installing a track plate on the machine body, when the sand mixing tank is closed, the operator only needs to place the support wheels on the track plate to provide vertical auxiliary support and positioning for the sand mixing tank, thereby ensuring that the two half-shells can be accurately connected, thus solving the technical problem of difficulty in closing the sand mixing tank in the prior art.

[0006] This utility model provides a three-axis lifting sand mixer, including a sand mixing device, wherein the sand mixing device includes:

[0007] The body includes a front panel and a rear panel, and a track plate is provided on the side of the front panel near the rear panel;

[0008] A sand mixing tank is disposed between the front end plate and the rear end plate; the sand mixing tank is composed of two mutually cooperating half-shells, both of which are rotatably connected to the rear end plate along a vertical rotation axis; a support wheel that can move along the track plate is rotatably connected to the half-shell, and when the two half-shells are closed into one, the support wheel is located on the track plate.

[0009] In some embodiments, the track plate has a horizontal portion and inclined portions located at both ends of the horizontal portion, the inclined portions being bent relative to the horizontal portion toward a side away from the mixing trough, and the support wheel being located on the horizontal portion when the two half-shells are closed together.

[0010] In some embodiments, a positioning plate is further provided on the front end plate. When the two half-shells are closed together, the positioning plate is located between the half-shells and the front end plate, and the positioning plate cooperates with the half-shells.

[0011] In some embodiments, the inner wall of the half-shell is provided with an inner annular groove that mates with the positioning plate. When the two half-shells are closed together, the inner annular grooves on the two half-shells form a continuous annular groove around the entire circumference, and the outer wall of the positioning plate mates with the inner wall of the inner annular groove.

[0012] In some embodiments, the sand mixing device further includes:

[0013] A sand mixing shaft, wherein a plurality of through holes are provided along the axial direction and the through holes extend radially along the sand mixing shaft;

[0014] The sand-mixing blade includes a blade body, a fixing rod, a locking nut, and several washers. The blade body and the fixing rod are connected. The fixing rod passes through the through hole, and the end of the fixing rod away from the blade body is provided with an external thread. The locking nut and the external thread of the fixing rod are engaged. Several washers are movably connected to the fixing rod and are located between the sand-mixing shaft and the locking nut.

[0015] In some embodiments, the three-axis lifting sand mixer further includes:

[0016] A base column, comprising a base and a column, wherein the column is rotatably connected to the base along a vertical rotation axis;

[0017] A primary conveying device is mounted on the column;

[0018] A secondary conveying device is disposed at the end of the primary conveying device away from the column, and is rotatably connected to the primary conveying device along a vertical rotation axis;

[0019] The sand mixing device is located at the end of the secondary conveying device away from the primary conveying device, and is rotatably connected to the secondary conveying device along the vertical rotation axis.

[0020] In some embodiments, the primary conveying device is rotatably connected to the column along a horizontal rotation axis.

[0021] In some embodiments, the primary conveying device is provided with a front connecting frame and a rear connecting frame at both ends, the front connecting frame is disposed on the column, and the rear connecting frame is rotatably connected to the secondary conveying device;

[0022] One end of the primary conveying device is rotatably connected to the bottom of the front connecting frame along a horizontal rotation axis, and the other end is rotatably connected to the bottom of the rear connecting frame along a horizontal rotation axis.

[0023] A support beam is provided between the front end connecting frame and the rear end connecting frame; one end of the support beam is rotatably connected to the upper part of the front end connecting frame along the horizontal rotation axis, and the other end is rotatably connected to the upper part of the rear end connecting frame along the horizontal rotation axis.

[0024] In some embodiments, a lifting drive assembly is provided on the column, the fixed end of the lifting drive assembly is hinged to the column, and the output end of the lifting drive assembly is hinged to the bottom of the primary conveying device.

[0025] In some embodiments, the lifting drive assembly includes a hydraulic cylinder, a first hinge seat is provided on the column, the fixed end of the hydraulic cylinder is hinged to the first hinge seat, a second hinge seat is provided at the bottom of the primary conveying device, and the output end of the hydraulic cylinder is hinged to the second hinge seat.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] This utility model provides a three-axis lifting sand mixer. By setting support wheels on the outside of the sand mixing tank and installing a track plate on the machine body, when the sand mixing tank is closed, the operator only needs to place the support wheels on the track plate to provide vertical auxiliary support and positioning for the sand mixing tank, thereby ensuring that the two half-shells can be accurately connected, which facilitates the closure of the sand mixing tank.

[0028] This utility model provides a three-axis lifting sand mixer. By setting up a lifting drive component, the lifting of the primary conveying device can be realized, thereby driving the lifting of the secondary conveying device and the sand mixing device. Thus, the height of the sand outlet can be adjusted as needed to adapt to the requirements of different height sand box shapes. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is one of the overall structural schematic diagrams of a three-axis lifting sand mixer according to an embodiment of this application;

[0031] Figure 2 This is the second schematic diagram of the overall structure of the three-axis lifting sand mixer according to the embodiments of this application;

[0032] Figure 3 This is a structural schematic diagram showing the connection relationship between the base column, the front connecting frame, the rear connecting frame and the support beam after the primary conveying device is hidden according to the embodiment of this application;

[0033] Figure 4 yes Figure 2 Enlarged schematic diagram of the structure between the first-stage rotation drive components in section A;

[0034] Figure 5 yes Figure 2 Enlarged schematic diagram of the secondary rotation drive assembly in section B;

[0035] Figure 6 This is a schematic diagram of the overall structure of the sand mixing device according to the embodiments of this application;

[0036] Figure 7 This is a schematic diagram of the structure of the sand mixing device according to an embodiment of this application after one of the half-shells is hidden;

[0037] Figure 8 yes Figure 7 Enlarged structural diagram of section C;

[0038] Figure 9 This is a schematic diagram of the structure of the sand mixing shaft and sand mixing blades of the sand mixing device according to an embodiment of this application.

[0039] In the picture:

[0040] 1. Base column; 11. Base; 12. Column; 2. Primary conveying device; 3. Secondary conveying device; 4. Sand mixing device; 41. Machine body; 411. Support frame; 412. Front end plate; 413. Rear end plate; 42. Track plate; 421. Horizontal section; 422. Inclined section; 43. Sand mixing trough; 431. Semi-shell; 4311. Inner annular groove; 44. Support wheel; 45. Positioning plate; 46. Sand mixing shaft; 461. Through hole; 47. Sand mixing blade; 471. Blade body; 472. Fixing rod; 473. Locking nut; 474. Several washers; 5. Feed hopper; 6. Discharge hopper; 7. Rotary drive device; 71. Primary rotary drive assembly; 711. 712. Motor; 713. First gear ring; 72. Secondary rotation drive assembly; 721. Second motor; 722. Second gear ring; 723. Second gear; 73. Tertiary rotation drive assembly; 731. Third motor; 732. Third gear ring; 733. Third gear; 8. Lifting drive assembly; 81. Hydraulic cylinder; 82. First hinge seat; 83. Second hinge seat; 9. Front connecting frame; 91. First front mounting plate; 92. Second front mounting plate; 10. Rear connecting frame; 101. First rear mounting plate; 102. Second rear mounting plate; 103. Third rear mounting plate; 13. Support beam; 131. First connecting rod; 132. Second connecting rod. Detailed Implementation

[0041] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] As attached Figure 1-6 As shown in an illustrative embodiment of the three-axis lifting sand mixer of this utility model, the three-axis lifting sand mixer includes a base column 1, a primary conveying device 2 is arranged on the base column 1, a secondary conveying device 3 is arranged below the primary conveying device 2, and a sand mixing device 4 is arranged below the secondary conveying device 3. The primary conveying device 2, the secondary conveying device 3, and the sand mixing device 4 are connected along the material conveying direction. The primary conveying device 2 is located at the feeding end, and a feeding hopper 5 is connected above the primary conveying device 2. The sand mixing device 4 is located at the discharging end, and a discharging hopper 6 is connected below the sand mixing device 4.

[0046] Reference Figure 1 In some embodiments, the base column 1 includes a base 11 and a column 12, with the bottom of the base 11 fixed to the ground by anchor bolts. The column 12 is rotatably connected to the base 11 along a vertical rotation axis; the secondary conveying device 3 is located at the end of the primary conveying device 2 away from the column 12 and is rotatably connected to the primary conveying device 2 along a vertical rotation axis; the sand mixing device 4 is located at the end of the secondary conveying device 3 away from the primary conveying device 2 and is rotatably connected to the secondary conveying device 3 along a vertical rotation axis.

[0047] Through the above structural design, the column 12 is rotatably connected to the base 11 along the vertical rotation axis, and can rotate in the horizontal direction, thereby driving the primary conveying device 2 on the column 12 to achieve horizontal rotation, so as to achieve one-axis rotation; the secondary conveying device 3 is rotatably connected to the primary conveying device 2 along the vertical rotation axis, and can achieve two-axis rotation in the horizontal direction; similarly, the sand mixing device 4 is rotatably connected to the secondary conveying device 3 along the vertical rotation axis, and can achieve three-axis rotation in the horizontal direction.

[0048] Reference Figure 2 , 3In some embodiments, the three-axis lifting sand mixer further includes a rotation drive device 7, which includes a primary rotation drive assembly 71. The primary rotation drive assembly 71 includes a first motor 711, a first gear ring 712, and a first gear 713. The first motor 711 is bolted to the column 12, and the output shaft of the first motor 711 is coaxially and fixedly connected to the first gear 713 to drive the rotation of the first gear 713. The first gear 713 meshes with the first gear ring 712. The first gear ring 712 is rotatably connected to the base 11 and coaxially and fixedly connected to the column 12. Specifically, an external gear slewing bearing structure is installed on the base 11, and the first gear ring 712 is the external gear ring of the aforementioned external gear slewing bearing structure.

[0049] With the above structural design, when in use, the first motor 711 is started, the first motor 711 drives the first gear 713 to rotate, the first gear 713 drives the first gear ring 712 to rotate, thereby driving the column 12 to rotate together, and then driving the primary conveying device 2 on the column 12 to rotate.

[0050] Reference Figure 1 , 2 In some embodiments, the primary conveying device 2 is rotatably connected to the column 12 along a horizontal rotation axis.

[0051] Through the above structural design, the primary conveying device 2 is rotatably connected to the column 12 along the horizontal rotation axis, enabling the primary conveying device 2 to rotate vertically. This allows the primary conveying device 2 to be raised and lowered, which in turn drives the secondary conveying device 3 and the sand mixing device 4 to be raised and lowered. Therefore, the height of the sand outlet can be adjusted as needed to meet the requirements of sand box molding at different heights. In summary, the three-axis rotation and lifting coordination in the horizontal direction significantly improves the molding coverage and meets the molding operations of sand boxes of various specifications and heights.

[0052] In some embodiments, a lifting drive assembly 8 is provided on the column 12, the fixed end of the lifting drive assembly 8 is hinged to the column 12, and the output end of the lifting drive assembly 8 is hinged to the bottom of the primary conveying device 2.

[0053] The above-mentioned structural configuration, by setting up the lifting drive component 8, can realize the precise lifting and lowering adjustment of the primary conveying device 2 in the vertical direction, thereby adjusting the height of the sand outlet according to the height requirements of different sand box shapes, thus adapting to different shape requirements.

[0054] In some embodiments, the lifting drive assembly 8 includes a hydraulic cylinder 81, a first hinge seat 82 is fixedly connected to the column 12, the fixed end of the hydraulic cylinder 81 is hinged to the first hinge seat 82, and a second hinge seat 83 is fixedly connected to the bottom of the primary conveying device 2, the output end of the hydraulic cylinder 81 is hinged to the second hinge seat 83.

[0055] The above structural design, by using a hydraulic cylinder 81 as the lifting drive component 8, can provide a smooth, precise and efficient lifting adjustment function. The hydraulic cylinder 81 can complete a wide range of lifting actions in a short time and has a high load-bearing capacity, which can adapt to the working requirements under different load conditions. The first hinge seat 82 and the second hinge seat 83 can provide stable support during the lifting process, effectively share the load and force of the hydraulic cylinder 81 during the lifting process, and reduce local stress concentration.

[0056] Reference Figure 1-3 In some embodiments, the first-stage conveying device 2 is provided with a front-end connecting frame 9 and a rear-end connecting frame 10 at both ends. The front-end connecting frame 9 is mounted on the column 12, and the rear-end connecting frame 10 is rotatably connected to the second-stage conveying device 3. One end of the first-stage conveying device 2 is rotatably connected to the bottom of the front-end connecting frame 9 along the horizontal rotation axis, and the other end is rotatably connected to the bottom of the rear-end connecting frame 10 along the horizontal rotation axis. A support beam 13 is provided between the front-end connecting frame 9 and the rear-end connecting frame 10. One end of the support beam 13 is rotatably connected to the upper part of the front-end connecting frame 9 along the horizontal rotation axis, and the other end is rotatably connected to the upper part of the rear-end connecting frame 10 along the horizontal rotation axis.

[0057] The above structural design provides stable support by setting up a connecting frame and support beam 13, thereby significantly improving the stability of the primary conveying device 2 during the lifting process. In addition, since the secondary conveying device 3 is rotatably connected to the primary conveying device 2 through the rear connecting frame 10, and the secondary conveying device 3 is not directly connected to the primary conveying device 2, the secondary conveying device 3 can operate independently of the lifting action of the primary conveying device 2, thereby maintaining its horizontal state and reducing the impact on the material transmission within the secondary conveying device 3 during the lifting process.

[0058] In some embodiments, the front-end connecting frame 9 includes a first front mounting plate 91 and a second front mounting plate 92, which are arranged parallel to each other on the column 12. The end of the primary conveying device 2 near the base column 1 is located between the first front mounting plate 91 and the second front mounting plate 92. A hinge shaft is rotatably connected between the first front mounting plate 91 and the second front mounting plate 92. The hinge shaft passes through the bottom of the first front mounting plate 91 into the primary conveying device 2 and extends to the bottom of the second front mounting plate 92. The first front mounting plate 91, the second front mounting plate 92, and the primary conveying device 2 are rotatably connected by the hinge shaft.

[0059] The rear connecting frame 10 includes a first rear mounting plate 101 and a second rear mounting plate 102, which are arranged in parallel. The end of the primary conveying device 2 closest to the secondary conveying device 3 is located between the first rear mounting plate 101 and the second rear mounting plate 102. The first front mounting plate 91 and the first rear mounting plate 101 are on the same horizontal line, and the second front mounting plate 92 and the second rear mounting plate 102 are on the same horizontal line. The bottom of the first rear mounting plate 101 and the bottom of the second rear mounting plate 102 are respectively rotatably connected to a short hinge shaft, and each is rotatably connected to the primary conveying device 2 through a corresponding short hinge shaft.

[0060] The support beam 13 includes a first connecting rod 131 and a second connecting rod 132. The first connecting rod 131 is rotatably connected to the top of the first front mounting plate 91 and the top of the first rear mounting plate 101, and the second connecting rod 132 is rotatably connected to the top of the second front mounting plate 92 and the top of the second rear mounting plate 102. The first connecting rod 131 is rotatably connected to the first front mounting plate 91 via a short hinge axis, and the second connecting rod 132 is rotatably connected to the second front mounting plate 92 via a short hinge axis. The first connecting rod 131, the second connecting rod 132, the first rear mounting plate 101, and the second rear mounting plate 102 are all rotatably connected to their respective long or short hinge axes via bearings.

[0061] The above structural design provides the specific structure of the front connecting frame 9, the rear connecting frame 10, and the support beam 13. A first front mounting plate 91 and a second front mounting plate 92 are provided on both sides of one end of the first conveying device 2, and a first rear mounting plate 101 and a second rear mounting plate 102 are provided on both sides of one end of the first conveying device 2, ensuring the stability of the lifting process of the first-stage conveying device 2. A first connecting rod 131 connects the first front mounting plate 91 and the first rear mounting plate 101, and a second connecting rod 132 connects the second front mounting plate 92 and the second rear mounting plate 102. The first connecting rod 131 and the second connecting rod 132 provide additional stable support, enhancing the rigidity and stability of the overall structure. The bearings effectively reduce friction and extend the service life of the equipment.

[0062] In some embodiments, the primary conveying device 2 includes a housing, within which a belt conveyor is installed. It should be noted that the belt conveyor in this application is a conventional belt conveyor, mainly composed of a conveyor belt, drive unit, rollers, idlers, tensioning device, and other components. It is understood that the conveyor belt can adopt various patterns such as herringbone pattern conveyor belts, granular pattern conveyor belts, diamond pattern conveyor belts, and herringbone pattern conveyor belts.

[0063] Reference Figure 2-4In some embodiments, the bottom of the first rear mounting plate 101 and the second rear mounting plate 102 are connected to a third rear mounting plate 103.

[0064] The rotation drive device 7 also includes a secondary rotation drive assembly 72, which includes a second motor 721, a second gear ring 722, and a second gear 723. The second motor 721 is bolted to the third rear mounting plate 103, and the output shaft of the second motor 721 is coaxially and fixedly connected to the second gear 723 to drive the rotation of the second gear 723. The second gear 723 meshes with the second gear ring 722. The second gear ring 722 is rotatably connected to the third rear mounting plate 103 and fixedly connected to the secondary conveying device 3.

[0065] With the above structural design, when in use, the second motor 721 is started, the second motor 721 drives the second gear 723 to rotate, the second gear 723 drives the second gear ring 722 to rotate, thereby driving the rotation of the secondary conveying device 3.

[0066] In some embodiments, the secondary conveying device 3 includes a housing, within which a belt conveyor is installed. It should be noted that the belt conveyor in this application is a conventional belt conveyor, mainly composed of a conveyor belt, drive unit, rollers, idlers, tensioning device, and other components. It is understood that the conveyor belt can adopt various patterns such as herringbone pattern conveyor belts, granular pattern conveyor belts, diamond pattern conveyor belts, and herringbone pattern conveyor belts.

[0067] Reference Figure 2 , 5 In some embodiments, the rotation drive device 7 further includes a three-stage rotation drive assembly 73, which includes a third motor 731, a third gear ring 732, and a third gear 733. The third motor 731 is bolted to one end of the secondary conveying device 3 near the sand mixing device 4. The output shaft of the third motor 731 is coaxially and fixedly connected to the third gear 733 to drive the rotation of the third gear 733. The third gear 733 meshes with the third gear ring 732. The third gear ring 732 is rotatably connected to the bottom of the secondary conveying device 3 and fixedly connected to the sand mixing device 4.

[0068] Reference Figure 6-9In some embodiments, the sand mixing device 4 includes a body 41, a track plate 42, and a sand mixing trough 43. The body 41 includes a support frame 411, a front end plate 412, and a rear end plate 413. One end of the support frame 411 is connected to the front end plate 412, and the other end is connected to the rear end plate 413. The track plate 42 is fixedly connected to the side of the front end plate 412 near the rear end plate 413. The sand mixing trough 43 is disposed between the front end plate 412 and the rear end plate 413 and is located below the support frame 411. The sand mixing trough 43 is composed of two mutually cooperating half-shells 431. Both half-shells 431 are rotatably connected to the rear end plate 413 along a vertical rotation axis. Support wheels 44 that can move along the track plate 42 are hinged on the half-shells 431. When the two half-shells 431 are closed into one, the support wheels 44 are located on the track plate 42.

[0069] With the above structural design, when closing the sand mixing tank 43, the staff only needs to ensure that the support wheel 44 falls on the track plate 42 to ensure that the two ends of the sand mixing tank 43 are on the same horizontal line. This provides vertical auxiliary support and positioning for closing the sand mixing tank 43. This design ensures that the two half-shells 431 can be accurately connected, avoiding the problem of inaccurate connection, thereby improving work efficiency.

[0070] In some embodiments, the track plate 42 has a horizontal portion 421 and inclined portions 422 located at both ends of the horizontal portion 421. The inclined portions 422 bend relative to the horizontal portion 421 toward the side away from the mixing tank 43. When the two half-shells 431 are closed together, the support wheel 44 is located on the horizontal portion 421.

[0071] Through the above structural design, the inclined part 422 is set so that when the sand mixing tank 43 is opened, the support wheel 44 can move smoothly downward along the inclined part 422, ensuring that the sand mixing tank 43 can be opened smoothly; during the closing process, the operator can first place the support wheel 44 on the inclined part 422, and then move it along the inclined part 422 to the horizontal part 421, thereby reducing the difficulty of operation for the operator.

[0072] In some embodiments, a positioning plate 45 is also provided on the front end plate 412. When the two half-shells 431 are closed into one, the positioning plate 45 is located between the half-shell 431 and the front end plate 412, and the positioning plate 45 cooperates with the half-shell 431.

[0073] Through the above structural design, the positioning plate 45 is located between the half shell 431 and the front end plate 412, and cooperates with the half shell 431, so that the half shell 431 can be accurately connected in the horizontal direction, thereby ensuring that the sand mixing tank 43 remains stable and sealed when closed.

[0074] In some embodiments, the inner wall of the half-shell 431 is provided with an inner annular groove 4311 that cooperates with the positioning plate 45. When the two half-shells 431 are closed into one, the inner annular grooves 4311 on the two half-shells 431 form a continuous annular groove around the circumference, and the outer wall of the positioning plate 45 cooperates with the inner wall of the inner annular groove 4311.

[0075] Through the above structural design, by opening an inner annular groove 4311 on the inner wall of the half-shell 431 to cooperate with the positioning plate 45, when the two half-shells 431 are closed, the inner annular groove 4311 forms a continuous annular groove around the whole circumference, and the outer wall of the positioning plate 45 is tightly fitted with the inner wall of the inner annular groove 4311, thereby improving the sealing performance of the sand mixing tank 43 after closure.

[0076] In some embodiments, the sand mixing device 4 further includes a sand mixing shaft 46 and sand mixing blades 47. The sand mixing shaft 46 has a plurality of through holes 461 along the axial direction, and the through holes 461 extend radially along the sand mixing shaft 46. The sand mixing blades 47 include a blade body 471, a fixing rod 472, a locking nut 473, and a plurality of washers 474. The blade body 471 and the fixing rod 472 are connected. The fixing rod 472 passes through the through holes 461, and the end of the fixing rod 472 away from the blade body 471 is provided with an external thread. The locking nut 473 and the external thread of the fixing rod 472 are engaged. The plurality of washers 474 are movably connected to the fixing rod 472 and are located between the sand mixing shaft 46 and the locking nut 473.

[0077] With the above structural design, when the sand mixing blade 47 is worn, the gap between the sand mixing blade 47 and the inner wall of the sand mixing trough 43 will increase. At this time, the gap between the blade body 471 and the sand mixing trough 43 can be adjusted by reducing the number of shims, so as to solve the problem that the gap between the sand mixing trough 43 and the blade body 471 is too large due to the wear of the sand mixing blade 47, resulting in sand sticking in the sand mixing trough 43 and being difficult to clean.

[0078] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0079] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A three-axis lifting sand mixer, characterized in that, Includes a sand mixing device, the sand mixing device comprising: The body includes a front panel and a rear panel, and a track plate is provided on the side of the front panel near the rear panel; A sand mixing tank is disposed between the front end plate and the rear end plate; the sand mixing tank is composed of two mutually cooperating half-shells, both of which are rotatably connected to the rear end plate along a vertical rotation axis; a support wheel that can move along the track plate is rotatably connected to the half-shell, and when the two half-shells are closed into one, the support wheel is located on the track plate.

2. The three-axis lifting sand mixer according to claim 1, characterized in that, The track plate has a horizontal section and inclined sections located at both ends of the horizontal section. The inclined sections are bent relative to the horizontal section toward the side away from the mixing tank. When the two half-shells are closed together, the support wheel is located on the horizontal section.

3. A three-axis lifting sand mixer according to claim 1, characterized in that, The front end plate is also provided with a positioning plate. When the two half-shells are closed together, the positioning plate is located between the half-shells and the front end plate, and the positioning plate cooperates with the half-shells.

4. A three-axis lifting sand mixer according to claim 3, characterized in that, The inner wall of the half-shell is provided with an inner annular groove that mates with the positioning plate. When the two half-shells are closed together, the inner annular grooves on the two half-shells form a continuous annular groove around the entire circumference, and the outer wall of the positioning plate mates with the inner wall of the inner annular groove.

5. A three-axis lifting sand mixer according to claim 1, characterized in that, The sand mixing device also includes: A sand mixing shaft, wherein a plurality of through holes are provided along the axial direction and the through holes extend radially along the sand mixing shaft; The sand-mixing blade includes a blade body, a fixing rod, a locking nut, and several washers. The blade body and the fixing rod are connected. The fixing rod passes through the through hole, and the end of the fixing rod away from the blade body is provided with an external thread. The locking nut and the external thread of the fixing rod are engaged. Several washers are movably connected to the fixing rod and are located between the sand-mixing shaft and the locking nut.

6. A three-axis lifting sand mixer according to any one of claims 1-5, characterized in that, The three-axis lifting sand mixer also includes: A base column, comprising a base and a column, wherein the column is rotatably connected to the base along a vertical rotation axis; A primary conveying device is mounted on the column; A secondary conveying device is disposed at the end of the primary conveying device away from the column, and is rotatably connected to the primary conveying device along a vertical rotation axis; The sand mixing device is located at the end of the secondary conveying device away from the primary conveying device, and is rotatably connected to the secondary conveying device along the vertical rotation axis.

7. A three-axis lifting sand mixer according to claim 6, characterized in that, The primary conveying device is rotatably connected to the column along the horizontal rotation axis.

8. A three-axis lifting sand mixer according to claim 7, characterized in that, The primary conveying device is provided with a front connecting frame and a rear connecting frame at both ends. The front connecting frame is mounted on the column, and the rear connecting frame is rotatably connected to the secondary conveying device. One end of the primary conveying device is rotatably connected to the bottom of the front connecting frame along a horizontal rotation axis, and the other end is rotatably connected to the bottom of the rear connecting frame along a horizontal rotation axis. A support beam is provided between the front end connecting frame and the rear end connecting frame; one end of the support beam is rotatably connected to the upper part of the front end connecting frame along the horizontal rotation axis, and the other end is rotatably connected to the upper part of the rear end connecting frame along the horizontal rotation axis.

9. A three-axis lifting sand mixer according to claim 7, characterized in that, A lifting drive assembly is provided on the column. The fixed end of the lifting drive assembly is hinged to the column, and the output end of the lifting drive assembly is hinged to the bottom of the primary conveying device.

10. A three-axis lifting sand mixer according to claim 9, characterized in that, The lifting drive assembly includes a hydraulic cylinder, a first hinge seat is provided on the column, the fixed end of the hydraulic cylinder is hinged to the first hinge seat, a second hinge seat is provided at the bottom of the primary conveying device, and the output end of the hydraulic cylinder is hinged to the second hinge seat.

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