A feeding hopper device for a concrete spraying machine with adjustable discharge port height for construction.

Abstract

This invention discloses a feed hopper device for a concrete spraying machine with an adjustable discharge port height, comprising a support cylinder, a rotating inner cylinder on the support cylinder, a driving device inside the rotating inner cylinder, a rotating outer cylinder at the top of the rotating inner cylinder, a top plate at the top of the rotating outer cylinder, a groove around the top of the top plate, several gravity pads within the groove, support rods at the top of each gravity pad, a feed hopper between the tops of the support rods, a feed channel at the bottom of the feed hopper extending through the top plate into the rotating outer cylinder, and a discharge device inside the rotating outer cylinder connected to a discharge conveying pipe. This solution achieves superior performance; in addition to height adjustment, the rotation of the lead screw also drives the collection box, causing centrifugal force and achieving rapid discharge.

Description

Technical Field

[0001] This invention relates to the field of concrete spraying machine feeding technology, and more specifically, to a concrete spraying machine feeding hopper device for building construction with an adjustable discharge port height. Background Technology

[0002] Traditional shotcrete machines operate independently, requiring four workers per machine: one to feed the accelerator and three to handle the spraying material. Typically, two to three shotcrete machines and 8 to 12 workers are needed per cycle for full-section initial support. Since the spraying material is stored on a steel plate on the ground, it must be manually shoveled into the hopper by the shotcrete machine. This method is time-consuming, labor-intensive, and inefficient, severely impacting the construction efficiency of shotcrete. Therefore, there are existing feed hoppers specifically designed for feeding. However, the discharge end of these existing hoppers is fixed, limiting their applicability to different shotcrete machines. The height of the discharge end cannot be adjusted according to requirements, thus reducing their scope of application. Summary of the Invention

[0003] The technical objective of this invention is to address the above-mentioned shortcomings by providing a feed hopper device for a concrete spraying machine with an adjustable discharge port height, thereby resolving the aforementioned problems.

[0004] The technical solution of this invention is implemented as follows:

[0005] A feed hopper device for a concrete spraying machine with an adjustable discharge port height includes a support cylinder, a rotating inner cylinder on the support cylinder, a drive device inside the rotating inner cylinder, a rotating outer cylinder at the top of the rotating inner cylinder, a top plate at the top of the rotating outer cylinder, a groove around the top of the top plate, several gravity pads within the groove, support rods at the top of each gravity pad, a feed hopper between the tops of the support rods, a feed channel at the bottom of the feed hopper extending through the top plate into the rotating outer cylinder, a discharge device inside the rotating outer cylinder, a discharge conveying pipe connected to the discharge device, guide grooves of varying heights on the surface of the rotating outer cylinder, and the discharge conveying pipe extending through the guide grooves to the outer end of the rotating outer cylinder and connected to a discharge connecting pipe at its end.

[0006] Preferably, the discharge port of the discharge pipe faces downward, and the discharge pipe is made of stainless steel. A pipe interface is provided between the discharge conveying pipe and the discharge pipe. The outer diameter of the discharge conveying pipe matches the groove diameter of the guide groove. The guide groove circles around the surface of the rotating outer cylinder at different heights.

[0007] Preferably, the inner rotating cylinder and the outer rotating cylinder rotate in the same direction and with the same time interval. The inner rotating cylinder is sleeved on the surface of the support cylinder, and the support cylinder has a cavity inside, with the driving device located in the cavity.

[0008] Preferably, the driving device includes a motor located at the center of the bottom of the cavity. The output end of the motor is connected to a lead screw, which extends through the support cylinder to the upper part of the rotating outer cylinder. A threaded sleeve that mates with the lead screw is fitted on the surface of the lead screw. The threaded sleeve is disposed in the discharge device, which includes a collection box. The middle part of the collection box is fitted onto the threaded sleeve. A driving partition plate is provided at the bottom of the collection box. The middle part of the driving partition plate is movably disposed from the surface of the threaded sleeve. The driving partition plate is configured with an arc-shaped groove structure on its side. The bottom of one outer end of the collection box is tightly connected to the side of the discharge conveying pipe away from the discharge pipe end. The side of the discharge conveying pipe that contacts the collection box has a hollowed-out discharge port.

[0009] Preferably, the lower part of the lead screw and above the motor is provided with a first bracket and a second bracket below the first bracket. The bottom center of the second bracket is fixedly connected to the motor. The lead screw passes through the middle of the second bracket, and the outer end of the second bracket is fixed to the corresponding end of the lower part of the inner wall of the cavity. The middle part of the first bracket is sleeved on the surface of the lead screw, and the outer end of the first bracket is provided with a second gear ring. Both upper ends of the second gear ring are provided with a second full gear that meshes with the second gear ring. Each second full gear is provided with a gear shaft at one end corresponding to the inner wall of the support cylinder. Each gear shaft passes through the support cylinder and has a first full gear at its outer end. Below the first full gear is a first gear ring that meshes with the first full gear. The bottom of the first gear ring is fixed to the rotating inner cylinder, which is a hollow annular cylinder.

[0010] Preferably, each gear shaft has an inlay block on its surface, and the inlay block is inlaid in the inner wall of the support cylinder, which serves to connect and fix it to the inner wall of the support cylinder.

[0011] Preferably, there is a 5-8mm gap between the outer end of the drive partition plate and the inner wall of the collection box, the bottom surface of the drive partition plate is in contact with the inner bottom surface of the collection box, and a groove is provided on the lower part of the surface of the threaded sleeve, the drive partition plate is located in the groove, and the surface of the groove and the inner wall of the middle part of the drive partition plate are both made into smooth surfaces.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0013] 1. This feeding hopper device features a rotating outer cylinder and a rotating inner cylinder positioned below the feeding hopper. When the drive unit operates, the rotating inner cylinder and the rotating outer cylinder rotate simultaneously in the same direction. The discharge conveying pipe, inserted in the guide groove, rotates with the internal screw, causing the threaded sleeve to move the collection box and the discharge conveying pipe up and down. This allows the discharge conveying pipe to extend into the guide groove, achieving height adjustment. Consequently, the height of the discharge end can be adjusted according to requirements during discharge, increasing its applicability. Compared to existing methods that directly use lifting structures or screws to achieve height adjustment, this solution achieves superior results. In addition to height adjustment, the rotation of the screw also drives the collection box, causing centrifugal force and achieving rapid discharge.

[0014] 2. This feeding hopper device, by setting a drive partition plate inside the collection box, causes the collection box to move up and down with the threaded sleeve on the surface of the screw. During this movement, the drive partition plate inside generates an inertial force that pulls the collection box up and down, causing it to rotate. This rotation generates a throwing force, which causes the material falling down to undergo centrifugal force. Then, it is pushed into the discharge port by the thrust, and thus discharged from the discharge conveyor. In addition to achieving unloading, the rotational force generated by the drive partition plate after rotation drives the internal material to achieve a mixing effect, preventing the incoming material from adhering to the inside or solidifying inside, which would cause problems with unloading.

[0015] 3. In addition, the wall of the collection box is set at a certain distance higher than the drive partition plate to prevent the material inside from being thrown out of the collection box after the drive partition plate rotates, ensuring that the material inside will not be thrown out and will always remain inside the collection box. In addition, the surface of the threaded sleeve and the middle of the collection box are made into a sealing structure to prevent the material inside from seeping in. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the rotating inner cylinder according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the end structure of the material collection box according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the support cylinder end structure according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the drive device structure according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of one end of the gear ring according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Support cylinder; 2. Rotating inner cylinder; 3. Rotating outer cylinder; 4. Top plate; 5. Groove; 6. Gravity pad; 7. Support rod; 8. Feed hopper; 9. Feed channel; 10. Discharge conveying pipe; 11. Guide groove; 12. Discharge connecting pipe; 13. Motor; 14. Lead screw; 15. Threaded sleeve; 16. Collection box; 17. Drive partition plate; 18. Discharge port; 19. Support 1; 20. Support 2; 21. Gear ring 2; 22. Full gear 2; 23. Full gear 1; 24. Gear ring 1; 25. Inlay block. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] According to embodiments of the present invention, such as Figure 1-6 As shown in the document:

[0028] This invention provides a feed hopper device for a concrete spraying machine with an adjustable discharge port height, comprising a support cylinder 1, a rotating inner cylinder 2 on the support cylinder 1, a driving device inside the rotating inner cylinder 2, a rotating outer cylinder 3 at the top of the rotating inner cylinder 2, a top plate 4 at the top of the rotating outer cylinder 3, a groove 5 around the top of the top of the top plate 4, a plurality of gravity pads 6 within the grooves 5, a support rod 7 at the top of each gravity pad 6, a feed hopper 8 between the tops of the support rods 7, a feed channel 9 at the bottom of the feed hopper 8, the feed channel 9 extending through the top plate 4 into the rotating outer cylinder 3, a discharge device inside the rotating outer cylinder 3, a discharge conveying pipe 10 connected to the discharge device, guide grooves 11 of varying heights on the surface of the rotating outer cylinder 3, the discharge conveying pipe 10 extending through the guide grooves 11 to the outer end of the rotating outer cylinder 3 and connected to a discharge connecting pipe 12 at the end.

[0029] In addition, according to Figure 1-2 As shown, the discharge port of the discharge pipe 12 faces downward, and the discharge pipe 12 is a stainless steel pipe. A pipe interface is provided between the discharge conveying pipe 10 and the discharge pipe 12. The outer diameter of the discharge conveying pipe 10 matches the groove diameter of the guide groove 11. The guide groove 11 circles around the surface of the rotating outer cylinder 3 at different heights. The rotating inner cylinder 2 and the rotating outer cylinder 3 have the same rotation direction and interval time. The rotating inner cylinder 2 is sleeved on the surface of the support cylinder 1. The support cylinder 1 has a cavity, and the driving device is located in the cavity.

[0030] In addition, Figure 3-6As shown, the driving device includes a motor 13 located at the bottom center of the cavity. The output end of the motor 13 is connected to a lead screw 14, which extends through the support cylinder 1 into the upper part of the rotating outer cylinder 3. A threaded sleeve 15, which mates with the lead screw 14, is fitted onto the surface of the lead screw 14. The threaded sleeve 15 is disposed in the discharge device, which includes a collection box 16. The middle part of the collection box 16 is fitted onto the threaded sleeve 15. A driving partition plate 17 is provided at the bottom of the collection box 16, and the middle part of the driving partition plate 17 is connected to the threaded sleeve 15. The surfaces are movable. The drive partition plate 17 has an arc-shaped groove structure on its side. The bottom of one outer end of the collection box 16 is tightly connected to the side of the discharge conveying pipe 10 away from the discharge connector 12. The side of the discharge conveying pipe 10 that contacts the collection box 16 has a hollowed-out discharge port 18. A bracket 19 is located below the lead screw 14 and above the motor 13, and a second bracket 20 is located below the first bracket 19. The bottom center of the second bracket 20 is fixedly connected to the motor 13. The lead screw 14 passes through the middle of the second bracket 20. The outer end of bracket 20 is fixed to the corresponding end of the lower part of the inner wall of the cavity. The middle part of bracket 19 is sleeved on the surface of the lead screw 14, and the outer end of bracket 19 is provided with gear ring 21. Both ends of gear ring 21 are provided with full gear 22 that mesh with gear ring 21. Each full gear 22 is provided with a gear shaft at one end corresponding to the inner wall of the support cylinder 1. Each gear shaft passes through the support cylinder 1 and is provided with full gear 23 at its outer end. Below full gear 23 is gear ring 24 that meshes with full gear 23. The bottom of gear ring 24 is fixed to the rotating inner cylinder 2. The rotating inner cylinder 2 is a hollow annular cylinder. The surface of the gear shaft is provided with inlay blocks 25, and the inlay blocks 25 are all embedded in the inner wall of the support cylinder 1, which serves to connect and fix with the inner wall of the support cylinder 1. The outer end of the drive partition plate 17 is spaced 5-8mm away from the inner wall of the collection box 16. The bottom surface of the drive partition plate 17 is in contact with the inner bottom surface of the collection box 16. The lower part of the surface of the threaded sleeve 15 is provided with a groove, and the drive partition plate 17 is located in the groove. The surface of the groove and the inner wall of the middle part of the drive partition plate 17 are both made into smooth surfaces.

[0031] Detailed usage and function of this embodiment:

[0032] A feeding channel 9 is provided at the bottom center of the feeding hopper 8. The feeding channel 9 runs through the top plate 4 and the rotating outer cylinder 3, extending the lower part of the feeding channel 9 into the rotating outer cylinder 3. When the collecting box 16 is at its highest position, the upper part of the collecting box 16 is in contact with the bottom discharge port of the feeding channel 9. In other words, the collecting box 16 is kept at its highest position in the original state, and the rotating outer cylinder 3 rotates one revolution to return to the original position. That is, starting from the highest position, it rotates one revolution and returns to the highest position again, which facilitates material discharge. When it is at the highest position (original state), after the material is poured into the feeding hopper 8, it directly enters the collecting box 16 through the feeding channel 9. The height of the collecting box 16 can be adjusted as needed. A valve is installed at the connection end of the discharge conveying pipe 10 and the discharge connecting pipe 12 to control the material discharge.

[0033] When the drive motor 13 is running, the motor 13 drives the lead screw 14 to rotate. After the lead screw 14 rotates, the threaded sleeve 15 that is mated to it moves up and down with the rotation of the lead screw 14. In turn, the threaded sleeve 15 drives the entire collection box 16 to generate up and down movement force within the rotating outer cylinder 3. At the same time, the rotation of the lead screw 14 drives the gear ring 21 to rotate, and the gear ring 21 drives the meshing full gear 22 at both ends above to rotate. The full gear 22 then drives the full gear 23 at the outer end through the gear shaft, so that the full gear... The gear ring 24 meshing with the inner cylinder 2 rotates, and the outer cylinder 3 on the inner cylinder 2 also rotates. In other words, the inner cylinder 2 and the outer cylinder 3 rotate in the same direction. When the screw 14 drives the collection box 16 to move up and down, the discharge conveying pipe 10 changes the height between the discharge pipe 12 and the ground according to the direction of the guide groove 11. Thus, the height position of the discharge end of the discharge pipe 12 can be adjusted according to the needs, which is convenient for use with different concrete spraying machines.

[0034] Furthermore, when the collection box 16 moves up and down, there is an inertial force. Under the buffer of the inertial force, the internal drive partition plate 17 will wobble with the outer surface of the threaded sleeve 15. This causes the drive partition plate 17 to rotate under this wobble force and the threaded sleeve 15 to rotate with the screw 14. When the drive partition plate 17 rotates, the falling material will generate centrifugal force with the rotation, thus throwing it in all directions. At the same time, the material will continuously hit the inner wall of the collection box 16 and be pushed into the discharge port 18 by the rotation of the drive partition plate 17. From the discharge port 18, it enters the discharge conveying pipe 10 for conveying and discharge. At the same time, under the centrifugal force, the material inside will continuously throw out force and hit the inner wall of the collection box 16, so that there is mutual collision friction between the materials, thereby achieving a mixing effect, avoiding the material from sticking to the inside, and also avoiding the phenomenon of material solidification and difficulty in unloading, thus improving the unloading effect.

[0035] Through the specific embodiments described above, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A feeding hopper device for a concrete spraying machine with an adjustable discharge port height, characterized in that, The device includes a support cylinder (1), a rotating inner cylinder (2) on the support cylinder (1), a driving device inside the rotating inner cylinder (2), a rotating outer cylinder (3) on the top of the rotating inner cylinder (2), a top plate (4) on the top of the rotating outer cylinder (3), a groove (5) around the top of the top plate (4), several gravity pads (6) inside the groove (5), support rods (7) on the top of each gravity pad (6), a feeding hopper (8) between the tops of the support rods (7), a feeding channel (9) at the bottom of the feeding hopper (8), the feeding channel (9) extending through the top plate (4) to the rotating outer cylinder (3), a discharge device inside the rotating outer cylinder (3), a discharge conveying pipe (10) connected to the discharge device, guide grooves (11) of different heights on the surface of the rotating outer cylinder (3), the discharge conveying pipe (10) extending through the guide grooves (11) to the outer end of the rotating outer cylinder (3) and connected to the discharge pipe (12) at the end. The support cylinder (1) has a cavity inside. The driving device includes a motor (13), which is located at the bottom center of the cavity. The output end of the motor (13) is connected to a lead screw (14). The lead screw (14) passes through the support cylinder (1) and extends to the upper part of the rotating outer cylinder (3). A threaded sleeve (15) that mates with the lead screw (14) is fitted on the surface of the lead screw (14). The threaded sleeve (15) is installed in the discharge device, which includes a collection box (16). The middle part of the collection box (16) is fitted with the threaded sleeve. On the threaded sleeve (15), a drive partition plate (17) is provided at the bottom of the collection box (16). The middle part of the drive partition plate (17) is movably set between the middle part and the surface of the threaded sleeve (15). The drive partition plate (17) is set with an arc-shaped groove structure on the side. The bottom of one end of the outer side of the collection box (16) is tightly connected to the side of the discharge conveying pipe (10) away from the discharge pipe (12). The side of the discharge conveying pipe (10) that contacts the collection box (16) is provided with a hollow discharge port (18). A bracket 1 (19) is provided at the lower part of the rod (14) and above the motor (13), and a bracket 2 (20) is provided below the bracket 1 (19). The bottom center of the bracket 2 (20) is fixedly connected to the motor (13). The lead screw (14) passes through the middle of the bracket 2 (20). The outer end of the bracket 2 (20) is fixed on the corresponding end of the lower part of the inner wall of the cavity. The middle part of the bracket 1 (19) is sleeved on the surface of the lead screw (14), and the outer end of the bracket 1 (19) is provided with a gear ring 2 (21). Both ends of the gear ring 2 (21) are provided with a full gear 2 (22) that meshes with the gear ring 2 (21). The full gear 2 (22) is provided with a gear shaft at one end of the inner wall of the support cylinder (1). The gear shaft passes through the support cylinder (1) and the outer end is provided with a full gear 1 (23). The gear ring 1 (24) that meshes with the full gear 1 (23) is provided below the full gear 1 (23). The bottom of the gear ring 1 (24) is fixed on the rotating inner cylinder (2). The rotating inner cylinder (2) is set as a hollow annular cylinder.

2. A feeding hopper device for a concrete spraying machine with an adjustable discharge port height according to claim 1, characterized in that, The discharge port of the discharge pipe (12) faces downward and is made of stainless steel. There is a pipe interface between the discharge conveying pipe (10) and the discharge pipe (12). The outer diameter of the discharge conveying pipe (10) matches the groove diameter of the guide groove (11). The guide groove (11) circles around the surface of the rotating outer cylinder (3) at different heights.

3. A feeding hopper device for a concrete spraying machine with an adjustable discharge port height according to claim 1, characterized in that, The inner rotating cylinder (2) and the outer rotating cylinder (3) have the same rotation direction and time interval. The inner rotating cylinder (2) is sleeved on the surface of the support cylinder (1).

4. A feeding hopper device for a concrete spraying machine with an adjustable discharge port height according to claim 1, characterized in that, All gear shafts are provided with inserts (25) on their surfaces, and the inserts (25) are all embedded in the inner wall of the support cylinder (1) to serve as a connection and fixation between the gear shaft and the inner wall of the support cylinder (1).

5. A feeding hopper device for a concrete spraying machine with an adjustable discharge port height according to claim 1, characterized in that, A 5-8mm gap is left between the outer end of the drive partition plate (17) and the inner wall of the collection box (16). The bottom surface of the drive partition plate (17) is in contact with the inner bottom surface of the collection box (16). A groove is provided on the lower part of the surface of the threaded sleeve (15). The drive partition plate (17) is located in the groove. The surface of the groove and the inner wall of the middle part of the drive partition plate (17) are both set as smooth surfaces.

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