Gravel distributing mechanism

Abstract

The utility model discloses a broken stone distributing mechanism which comprises a discharging groove, a material dispersing groove is formed below the discharging groove, a conveying shaft is rotationally arranged in the material dispersing groove, a first spiral blade and a second spiral blade are fixed to the conveying shaft, the rotating direction of the first spiral blade is opposite to that of the second spiral blade, and the first spiral blade and the second spiral blade are fixed to the discharging groove. The lower end of the discharging groove is located between the first spiral blade and the second spiral blade, and an opening and closing mechanism is arranged at the lower end of the bulk material groove and used for opening and closing a discharging opening of the bulk material groove. Compared with the prior art, the conveying shaft is adopted to drive the spiral blade, the manufacturing cost is reduced, secondly, after broken stones are evenly scattered in the material scattering groove, the opening and closing mechanism is used for opening the discharging opening for material distribution, the broken stones are evenly distributed, and the material distribution effect is good.

Description

Technical Field

[0001] This utility model relates to the field of road gravel laying technology, and in particular to a gravel laying mechanism. Background Technology

[0002] High-performance fiber-reinforced asphalt macadam flexible crack-resistant seal technology (hereinafter referred to as high-performance flexible crack-resistant seal) uses mechanical equipment such as a four-synchronous intelligent seal vehicle to spread a certain amount of fiber, modified (emulsified) asphalt binder, and controlled-gradient crushed stone simultaneously through high-precision, mechanized, and intelligent control methods. This is then compacted by a road roller (or by natural traffic) to form a flexible crack-resistant seal. Currently, when crushed stone falls from the hopper onto the road surface, there is uneven distribution and skipping. Patent application CN117513100A discloses a synchronous fiber-reinforced macadam vehicle that uses propellers to achieve uniform discharge from the discharge pipes. Three parallel discharge pipes achieve simultaneous discharge from three locations, ensuring uniformity during discharge. However, this discharge method requires multiple propellers, increasing manufacturing costs; secondly, the distribution of crushed stone between the discharge pipes is still less than in other areas. Utility Model Content

[0003] This invention provides a crushed stone feeding mechanism to solve the problems in the prior art that require multiple propellers to achieve uniform feeding and that there is insufficient crushed stone distribution between the propellers.

[0004] This utility model provides a crushed stone feeding mechanism, including a feeding trough, a loose material trough below the feeding trough, a conveying shaft rotatably arranged inside the loose material trough, a first spiral blade and a second spiral blade fixed on the conveying shaft, the first spiral blade and the second spiral blade rotate in opposite directions, the lower end of the feeding trough is located between the first spiral blade and the second spiral blade, and the lower end of the loose material trough is provided with an opening and closing mechanism, the opening and closing mechanism is used to open and close the outlet of the loose material trough.

[0005] Preferably, the opening and closing mechanism includes a discharge plate hinged to the bulk material trough, the discharge plate being the bottom of the bulk material trough, and the discharge plate being connected to a drive assembly that drives it to swing up and down.

[0006] Preferably, the drive assembly includes a push rod, a rack, and a gear. The two ends of the push rod are respectively hinged to the blanking plate and the rack. The gear meshes with the rack, and the rack is slidably mounted on the frame.

[0007] Preferably, the gear and the push rod are respectively located at both ends of the rack.

[0008] Preferably, a stiffening beam is fixed to the bottom of the blanking plate, and the stiffening beam is hinged to a plurality of top rods.

[0009] Preferably, a rotating shaft is fixed on the gear, and multiple gears are distributed along the length of the rotating shaft, which is connected to the output shaft of the drive motor.

[0010] Preferably, there are multiple first and second helical blades, and a first partition is provided between two adjacent first helical blades. The first partition is detachably connected to the material trough. A second partition is provided between two adjacent second helical blades. The second partition is detachably connected to the material trough.

[0011] Preferably, the conveying shaft includes a rotating inner shaft and a plurality of outer shafts sleeved on the inner shaft. The outer shafts are detachably connected to the inner shaft. The distance between adjacent outer shafts is greater than the width of the first partition. The width of the second partition is the same as the width of the first partition. The first helical blade and the second helical blade are respectively fixed on the outer shaft.

[0012] Preferably, the outer shaft and the inner shaft are fixed by bolts, which are distributed at both ends of the outer shaft.

[0013] Preferably, the first baffle includes a first baffle, a second baffle, and a third baffle. The first baffle is provided with a clearance groove adapted to the inner shaft. The first baffle is fixed to the material chute by bolts. The second baffle is fixed to the first baffle by bolts. The second baffle is used to seal the clearance groove of the first baffle. The third baffle is in contact with the first baffle and is fixed to the upper side of the material discharge plate.

[0014] Compared with existing technologies, in this invention, crushed stone falls downwards along the feeding chute at the connection between the first and second helical blades. The conveying shaft, by rotating the first and second helical blades, transports the crushed stone from below the feeding chute to both ends of the bulk material trough, ensuring that the crushed stone is evenly distributed within the trough. Then, the outlet of the bulk material trough is opened via an opening and closing mechanism, achieving phased spreading of the crushed stone. This invention uses a single conveying shaft to drive the helical blades, reducing manufacturing costs. Furthermore, by evenly spreading the crushed stone within the bulk material trough before opening the outlet via the opening and closing mechanism for material distribution, the crushed stone is evenly distributed, resulting in a good spreading effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is the left view of the present invention;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the first partition of this utility model;

[0020] Figure 5 This is a partial structural schematic diagram of the conveyor shaft of this utility model;

[0021] Figure 6 for Figure 4 Schematic diagram of cross section along line AA.

[0022] Figure label:

[0023] 1. Feeding chute, 2. Bulk chute, 3. Conveying shaft, 31. Inner shaft, 32. Outer shaft, 33. Bolt rod, 4. First spiral blade, 5. Second spiral blade, 6. Opening and closing mechanism, 61. Drop plate, 62. Push rod, 63. Rack, 64. Gear, 65. Stiffening beam, 66. Rotating shaft, 7. First partition, 71. First baffle, 72. Second baffle, 73. Third baffle, 8. Second partition, 9. Frame. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] See attached document Figure 2This embodiment provides a crushed stone spreading mechanism, including a feeding trough 1, a dispersing trough 2 below the feeding trough 1, a conveying shaft 3 rotatably mounted inside the dispersing trough 2, and a first spiral blade 4 and a second spiral blade 5 fixed on the conveying shaft 3. The first spiral blade 4 and the second spiral blade 5 rotate in opposite directions. The lower end of the feeding trough 1 is located between the first spiral blade 4 and the second spiral blade 5. The lower end of the dispersing trough 2 is provided with an opening and closing mechanism 6, which is used to open and close the outlet of the dispersing trough 2. In this utility model, the crushed stone slides down the feeding trough 1 to the connection between the first spiral blade 4 and the second spiral blade 5. The conveying shaft 3 conveys the crushed stone below the feeding trough 1 to both ends of the dispersing trough 2 by rotating the first spiral blade 4 and the second spiral blade 5, so that the crushed stone can be evenly distributed in the dispersing trough 2. Then, the outlet of the dispersing trough 2 is opened by the opening and closing mechanism 6 to realize the staged spreading of the crushed stone. This utility model uses a conveyor shaft 3 to drive the spiral blades, which reduces the manufacturing cost. Secondly, after the crushed stone is evenly dispersed in the hopper 2, the discharge port is opened by the opening and closing mechanism 6 to distribute the material. The crushed stone is evenly distributed and the material distribution effect is good.

[0026] One implementation of the opening and closing mechanism 6: Refer to the attached document. Figure 3 The opening and closing mechanism 6 includes a discharge plate 61 hinged to the bulk material trough 2. The discharge plate 61 is the bottom of the bulk material trough 2 and is connected to a drive assembly that drives it to swing up and down. When the discharge plate 61 swings downward, it opens the outlet of the bulk material trough 2, and the crushed stone falls along the discharge plate 61 towards the outlet. Compared to vertical falling, the inclined distribution of the discharge plate 61 after opening the outlet can effectively slow down the falling speed of the crushed stone, which is conducive to improving the distribution effect of the crushed stone.

[0027] One embodiment of the drive assembly: The drive assembly includes a push rod 62, a rack 63, and a gear 64. The two ends of the push rod 62 are hinged to the material drop plate 61 and the rack 63, respectively. The gear 64 meshes with the rack 63, and the rack 63 is slidably mounted on the frame 9. The rotation of the gear 64 drives the rack 63 to slide horizontally along the frame 9. The rack 63, through the hinged push rod 62, lifts the material drop plate 61 to close the outlet of the bulk material trough 2, or lowers the material drop plate 61 through the hinged push rod 62 to open the outlet of the bulk material trough 2.

[0028] In another embodiment of this utility model, gear 64 and push rod 62 are respectively located at both ends of rack 63. Gear 64, push rod 62 and rack 63 are all located below the material drop plate 61, which can prevent falling gravel from hitting the drive component.

[0029] As another embodiment of this utility model: a stiffening beam 65 is fixed to the bottom of the blanking plate 61, and the stiffening beam 65 is hinged to multiple top rods 62. In this structural design, the blanking plate 61 is supported by multiple top rods 62, which helps to improve the structural strength of the drive assembly.

[0030] In another embodiment of this utility model: a rotating shaft 66 is fixed on the gear 64, and multiple gears 64 are distributed along the length direction of the rotating shaft 66. The rotating shaft 66 is connected to the output shaft of the drive motor.

[0031] As another embodiment of this utility model: refer to the appendix Figure 2 There are multiple first helical blades 4 and second helical blades 5. A first partition 7 is provided between two adjacent first helical blades 4, and the first partition 7 is detachably connected to the material trough 2. A second partition 8 is provided between two adjacent second helical blades 5, and the second partition 8 is detachably connected to the material trough 2. The first partition 7 and the second partition 8 respectively prevent the crushed stone from being conveyed to both ends of the material trough 2. That is, the distance between the first partition 7 and the second partition 8 is the width of the crushed stone distribution. In this structural design, the width of the crushed stone distribution is adjusted by adjusting the distance between the first partition 7 and the second partition 8.

[0032] As another embodiment of this utility model: refer to the appendix Figure 5 The conveying shaft 3 includes a rotating inner shaft 31 and multiple outer shafts 32 sleeved on the inner shaft 31. The outer shafts 32 are rotatable around the inner shaft 31 and are detachably connected to the inner shaft 31. The distance between adjacent outer shafts 32 is greater than the width of the first partition 7. The width of the second partition 8 is the same as the width of the first partition 7. The first helical blade 4 and the second helical blade 5 are respectively fixed on the outer shafts 32. Specifically, the outer shafts 32 and the first helical blades 4 and 5 are arranged in a one-to-one correspondence. When the outer shafts 32 and the inner shaft 31 are not connected, the inner shaft 31 rotates within the outer shaft 32 without rotating the helical blades on it. When the outer shafts 32 and the inner shaft 31 are connected, the rotation of the inner shaft 31 drives the rotation of the outer shaft 32, thereby driving the helical blades on it to rotate. Through this structural design, when the conveying shaft 3 rotates, the first helical blades 4 and the second helical blades 5 outside the first partition 7 and the second partition 8 will not rotate, effectively reducing energy consumption.

[0033] One embodiment in which the outer shaft 32 and the inner shaft 31 are detachably connected: see attached figure Figure 6 The outer shaft 32 and the inner shaft 31 are fixed by bolts 33, which are distributed at both ends of the outer shaft 32 and are threaded to the outer shaft 32 and the inner shaft 31 respectively.

[0034] One embodiment in which the first partition 7 is detachably connected to the material trough 2: see attached... Figure 3 and attached Figure 4The first baffle 7 includes a first baffle 71, a second baffle 72, and a third baffle 73. The first baffle 71 is provided with a clearance groove that matches the inner shaft 31. During installation, the inner shaft 31 is inserted into the clearance groove of the first baffle 71, and then the first baffle 71 is fixed to the ear plate on the material trough 2 by bolts. The upper end of the second baffle 72 is provided with an arc surface that matches the inner shaft 31. The second baffle 72 is used to seal the clearance groove of the first baffle 71. The second baffle 72 is fixed to the first baffle 71 by bolts. The third baffle 73 is slidably connected to the first baffle 71. The third baffle 73 is fixed on the upper side of the discharge plate 61. When the discharge plate 61 swings downward to open the discharge port of the material trough 2, the third baffle 73 can effectively ensure that the crushed stone does not fall to both ends of the discharge plate 61. The inner shaft 31 can rotate between the first baffle 71 and the second baffle 72. The first baffle 71 and the second baffle 72 together block the conveying of crushed stone to both ends of the bulk material trough 2.

[0035] Specifically, the third baffle 73 is fixed to the ear plate on the discharge plate 61 by bolts.

[0036] As another embodiment of this utility model: the structure of the second partition 8 is the same as that of the first partition 7.

[0037] As another embodiment of this utility model: refer to the appendix Figure 1 The feeding trough 1 is inclined and distributed above the bulk material trough 2.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A stone crushing and spreading mechanism, characterized in that, The device includes a feeding trough, below which is a bulk material trough. A conveying shaft is rotatably mounted inside the bulk material trough. A first spiral blade and a second spiral blade are fixed on the conveying shaft. The first and second spiral blades rotate in opposite directions. The lower end of the feeding trough is located between the first and second spiral blades. The lower end of the bulk material trough is provided with an opening and closing mechanism for opening and closing the outlet of the bulk material trough.

2. The stone crushing and spreading mechanism according to claim 1, characterized in that, The opening and closing mechanism includes a discharge plate hinged to the bulk material trough, the discharge plate being the bottom of the bulk material trough, and the discharge plate being connected to a drive assembly that drives it to swing up and down.

3. The stone crushing and spreading mechanism according to claim 2, characterized in that, The drive assembly includes a push rod, a rack, and a gear. The two ends of the push rod are hinged to the blanking plate and the rack, respectively. The gear meshes with the rack, and the rack is slidably mounted on the frame.

4. The stone crushing and spreading mechanism according to claim 3, characterized in that, The gear and push rod are respectively located at both ends of the rack.

5. The stone crushing and spreading mechanism according to claim 4, characterized in that, The bottom of the blanking plate is fixed with a stiffening beam, which is hinged to multiple top rods.

6. The stone crushing and spreading mechanism according to claim 5, characterized in that, A rotating shaft is fixed on the gear, and multiple gears are distributed along the length of the rotating shaft. The rotating shaft is connected to the output shaft of the drive motor.

7. The stone crushing and spreading mechanism according to claim 1, characterized in that, There are multiple first and second helical blades. A first partition is provided between two adjacent first helical blades. The first partition is detachably connected to the material trough. A second partition is provided between two adjacent second helical blades. The second partition is detachably connected to the material trough.

8. The stone crushing and spreading mechanism according to claim 7, characterized in that, The conveying shaft includes a rotating inner shaft and multiple outer shafts sleeved on the inner shaft. The outer shafts are detachably connected to the inner shaft. The distance between adjacent outer shafts is greater than the width of the first partition. The width of the second partition is the same as the width of the first partition. The first helical blade and the second helical blade are respectively fixed on the outer shaft.

9. The stone crushing and spreading mechanism according to claim 8, characterized in that, The outer shaft and the inner shaft are fixed by bolts, which are located at both ends of the outer shaft.

10. The stone crushing and spreading mechanism according to claim 9, characterized in that, The first baffle includes a first baffle, a second baffle, and a third baffle. The first baffle is provided with a clearance groove adapted to the inner shaft. The first baffle is fixed to the material chute by bolts. The second baffle is fixed to the first baffle by bolts. The second baffle is used to seal the clearance groove of the first baffle. The third baffle is in contact with the first baffle and is fixed on the upper side of the discharge plate.

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