A broken screening device for road and bridge construction

Abstract

The utility model provides a kind of crushing and screening device for road and bridge construction, it is related to crushing and screening technical field, the utility model includes shell, shell is placed on ground by the aid of support leg and provides support to whole, the feed frame is installed at the top of shell, wherein the feed frame can send large particle stone into the inside of shell, the discharge pipe is installed at the bottom of shell, wherein the discharge pipe can send the crushed stone out of shell, two the first crushing roller is rotatably connected in the inside of shell, wherein the first crushing roller can crush large particle stone, the driving mechanism is installed outside shell, wherein the driving mechanism can drive the first crushing roller in the inside of shell to rotate, the filter screen is installed in the inside of shell, the filter screen is inclined, wherein the surface of filter screen is evenly provided with a plurality of filter holes, the utility model reaches the effect of secondary crushing to stone by crushing device, improves the crushing effect of stone.

Description

Technical Field

[0001] This utility model relates to the field of crushing and screening technology, and in particular to a crushing and screening device for road and bridge construction. Background Technology

[0002] With the development of society, the level of development of transportation directly affects the construction of cities and economic development. In order to ensure the safety and stability of transportation, fast and high-quality road and bridge construction has become the key to restricting the development of transportation. Crushed stone is an indispensable base material in road and bridge construction. At present, large-particle stones often need to be crushed and screened during bridge deck construction.

[0003] In existing technologies, when crushing large stones, some of the crushed stones are not completely crushed. These crushed stones are discharged from the crushing equipment along with the completely crushed stones, thus affecting the normal construction of the road surface. Utility Model Content

[0004] This utility model proposes a crushing and screening device for road and bridge construction to overcome the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a crushing and screening device for road and bridge construction, comprising a housing, the housing being supported by outriggers placed on the ground, a feeding frame installed on the top of the housing, wherein the feeding frame can feed large stone particles into the interior of the housing, a discharge pipe installed at the bottom of the housing, wherein the discharge pipe can discharge crushed stones out of the housing, two first crushing rollers rotatably connected inside the housing, wherein the first crushing rollers can crush large stone particles, a driving mechanism installed outside the housing, wherein the driving mechanism can drive the first crushing rollers inside the housing to rotate, a filter screen installed inside the housing, the filter screen being inclined, wherein the surface of the filter screen is evenly provided with a plurality of filter holes, and a crushing device installed inside the housing, wherein the crushing device can perform secondary crushing on stones that are not thoroughly crushed.

[0006] The effect achieved by the above components is as follows: when large stones need to be crushed, the worker feeds the large stones into the interior of the shell through the feed frame, turns on the drive mechanism, and the drive mechanism drives the two first crushing rollers to rotate. The first crushing rollers crush the large stones, and the crushed stones fall onto the filter screen. The filter screen filters out the thoroughly crushed stones, while the stones that are not crushed properly are screened out and sent to the crushing device. The crushing device crushes the stones that are not crushed properly a second time, and finally the crushed stones are discharged from the shell through the discharge pipe.

[0007] Preferably, the crushing device includes an arc plate, which is fixedly connected inside the outer casing. The arc plate is located on one side of the filter screen. A second crushing roller is rotatably connected inside the outer casing, located at the arc plate. Several protrusions are uniformly fixedly connected to the arc surface of the second crushing roller. The motor is installed outside the outer casing and is fixedly connected to a first sprocket via a reducer. One end of the second crushing roller is fixedly connected to a second sprocket. A chain is provided on one side of the outer casing, wherein the chain is looped between the first sprocket and the second sprocket.

[0008] The effect achieved by the above components is as follows: after the filter screen filters out the incompletely crushed stones, the stones are guided by the inclined filter screen to the arc plate. The stones enter the gap between the arc plate and the second crushing roller. The motor is turned on, and the motor drives the first sprocket to rotate with the help of the reducer. The first sprocket drives the second sprocket and the second crushing roller to rotate through the chain. The protrusions on the second crushing roller squeeze the stones between the arc plate and the second crushing roller, achieving the effect of secondary crushing of the stones. The crushing device achieves the effect of secondary crushing of the stones, improving the crushing effect of the stones.

[0009] Preferably, both ends of the arc plate are fixedly connected to triangular plates, which are installed inside the outer casing by means of bolts.

[0010] The effect achieved by the above components is that by setting the triangular plate, the contact area between the outer shell and the arc plate is increased, thereby improving the stability of the arc plate.

[0011] Preferably, a guide plate is fixedly connected inside the outer casing, wherein the guide plate is located directly above the second crushing roller.

[0012] The effect achieved by the above components is that by setting the guide plate, the stones are guided to the middle of the arc plate and the second crushing roller.

[0013] Preferably, a striking device is provided on one side of the first sprocket. The striking device includes an eccentric circle, which is installed on one side of the first sprocket. A guide tube is fixedly connected inside the housing by means of a support rod. A guide rod is slidably connected inside the guide tube. One end of the guide rod is located directly above the eccentric circle. A striking block is fixedly connected to the other end of the guide tube. A spring is sleeved on the arc surface of the guide rod. The two ends of the spring are fixedly connected to the guide tube and the striking block, respectively.

[0014] The effect achieved by the above components is as follows: When the first sprocket rotates, it rotates along with the eccentric circle. When the protruding end of the eccentric circle moves to the guide rod, the eccentric circle presses against the guide rod, causing the guide rod to move inside the guide tube. The spring deforms, and the guide rod, along with the striking block, strikes the filter screen. When the protruding end of the eccentric circle moves away from the guide rod, the striking block moves away from the filter screen under the action of the spring's restoring force. As the eccentric circle continues to rotate, the striking block continuously strikes the filter screen. The striking block, set by the striking device, achieves the effect of striking the filter screen, preventing crushed stones from clogging the filter holes and thus preventing the filter screen from functioning properly.

[0015] Preferably, a rubber pad is fixedly connected to one end of the striking block, and the size of the rubber pad is adapted to the size of the striking block.

[0016] The effect achieved by the above-mentioned components is that the rubber pads protect the striking blocks and prevent them from damaging the filter screen.

[0017] Preferably, a U-shaped plate is fixedly connected to the end of the guide rod away from the striking block, and the two arms of the U-shaped plate are rotatably connected to the same rotating component, wherein the rotating component is in contact with the eccentric circle.

[0018] The effect achieved by the above components is as follows: by setting the rotating part inside the U-shaped plate to rotate with the eccentric circle, the friction between the guide rod and the eccentric circle is reduced, making it easier for the eccentric circle to move with the guide rod.

[0019] Preferably, the arc surface of the guide rod is fixedly connected to two mutually symmetrical limiting rods, and the two limiting rods are centrally symmetrical.

[0020] The effect achieved by the above components is that by setting a limit rod, the direction of movement of the guide rod is restricted, thus preventing the guide rod from shaking.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] After the filter screen removes the incompletely crushed stones, the stones are guided by the inclined filter screen to the arc plate. The stones enter the gap between the arc plate and the second crushing roller. The motor is turned on, and the motor drives the first sprocket to rotate through the reducer. The first sprocket drives the second sprocket and the second crushing roller to rotate through the chain. The protrusions on the second crushing roller squeeze the stones between the arc plate and the second crushing roller, achieving the effect of secondary crushing of the stones. The crushing device achieves the effect of secondary crushing of the stones, improving the crushing effect of the stones. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This utility model Figure 1 A sectional view;

[0025] Figure 3 This is a three-dimensional structural diagram of the pulverizing device of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the striking device of this utility model.

[0027] Legend: 1. Outer shell; 2. Feed frame; 3. Discharge pipe; 4. Drive mechanism; 5. First crushing roller; 6. Filter screen; 7. Crushing device; 71. Arc plate; 72. Second crushing roller; 73. Protrusion; 74. Motor; 75. First sprocket; 76. Second sprocket; 77. Chain; 78. Triangular plate; 79. Guide plate; 8. Striking device; 81. Eccentric circle; 82. Guide tube; 83. Guide rod; 84. Striking block; 85. Spring; 86. U-shaped plate; 87. Rotating component; 88. Limiting rod; 89. Rubber pad. Detailed Implementation

[0028] Reference Figure 1-4 As shown, this embodiment discloses a crushing and screening device for road and bridge construction, including a housing 1, which is supported by legs placed on the ground; a feed frame 2, which is installed on the top of the housing 1 and can feed large stones into the housing 1; a discharge pipe 3, which is installed at the bottom of the housing 1 and can discharge crushed stones out of the housing 1; two first crushing rollers 5, which are rotatably connected inside the housing 1 and can crush large stones; a drive mechanism 4, which is installed outside the housing 1 and can drive the first crushing rollers 5 inside the housing 1 to rotate; a filter screen 6, which is installed inside the housing 1 and is inclined, with a plurality of filter holes evenly distributed on its surface; and a crushing device 7, which is installed inside the housing 1 and can perform secondary crushing on stones that are not completely crushed. When large stones need to be crushed, the workers feed the large stones into the interior of the outer shell 1 through the feed frame 2, turn on the drive mechanism 4, and the drive mechanism 4 drives the two first crushing rollers 5 to rotate. The first crushing rollers 5 crush the large stones, and the crushed stones fall onto the filter screen 6. The filter screen 6 filters the thoroughly crushed stones, while the stones that are not crushed properly are screened out by the filter screen 6 and sent to the crushing device 7. The crushing device 7 crushes the stones that are not crushed properly a second time, and finally the crushed stones are discharged from the outer shell 1 through the discharge pipe 3.

[0029] Reference Figure 1-4As shown, the crushing device 7 includes an arc plate 71, which is fixedly connected inside the outer casing 1. The arc plate 71 is located on one side of the filter screen 6. A second crushing roller 72 is rotatably connected inside the outer casing 1. The second crushing roller 72 is located at the arc plate 71. Several protrusions 73 are evenly fixedly connected to the arc surface of the second crushing roller 72. A motor 74 is installed outside the outer casing 1. The motor 74 is fixedly connected to a first sprocket 75 via a reducer. A second sprocket 76 is fixedly connected to one end of the second crushing roller 72. A chain 77 is provided on one side of the outer casing 1. The chain 77 is sleeved on the first sprocket 75 and the second sprocket 76. After the filter screen 6 filters out the incompletely crushed stones, the stones are guided by the inclined filter screen 6 to the arc plate 71. The stones enter the gap between the arc plate 71 and the second crushing roller 72. The motor 74 is turned on, and the motor 74 drives the first sprocket 75 to rotate through the reducer. The first sprocket 75 drives the second sprocket 76 and the second crushing roller 72 to rotate through the chain 77. The protrusions 73 on the second crushing roller 72 squeeze the stones between the arc plate 71 and the second crushing roller 72, achieving the effect of secondary crushing of the stones. The crushing device 7 achieves the effect of secondary crushing of the stones, improving the crushing effect of the stones.

[0030] Reference Figure 1-4 As shown, triangular plates 78 are fixedly connected to both ends of the arc plate 71, and the triangular plates 78 are installed inside the outer casing 1 by bolts. By setting the triangular plates 78, the contact area between the outer casing 1 and the arc plate 71 is increased, thereby improving the stability of the arc plate 71. A guide plate 79 is fixedly connected inside the outer casing 1, and the guide plate 79 is located directly above the second crushing roller 72. By setting the guide plate 79, the stone is guided to the middle of the arc plate 71 and the second crushing roller 72.

[0031] Reference Figure 1-4As shown, a striking device 8 is provided on one side of the first sprocket 75. The striking device 8 includes an eccentric circle 81, which is installed on one side of the first sprocket 75. A guide tube 82 is fixedly connected inside the housing 1 by means of a support rod. A guide rod 83 is slidably connected inside the guide tube 82. One end of the guide rod 83 is located directly above the eccentric circle 81. A striking block 84 is fixedly connected to the other end of the guide tube 82. A spring 85 is sleeved on the arc surface of the guide rod 83. The two ends of the spring 85 are fixedly connected to the guide tube 82 and the striking block 84, respectively. When the first sprocket 75 rotates, it rotates along with the eccentric circle 81. When the protruding end of the eccentric circle 81 moves to the guide rod 83, the eccentric circle 81 presses against the guide rod 83, causing the guide rod 83 to move inside the guide tube 82. The spring 85 deforms, and the guide rod 83, along with the striking block 84, strikes the filter screen 6. When the protruding end of the eccentric circle 81 moves away from the guide rod 83, the striking block 84 moves away from the filter screen 6 under the restoring force of the spring 85. As the eccentric circle 81 continues to rotate, the striking block 84 continuously strikes the filter screen 6. The striking block 84, provided by the striking device 8, achieves the effect of striking the filter screen 6, preventing the crushed stones from clogging the filter holes of the filter screen 6 and thus preventing the filter screen 6 from being used normally.

[0032] Reference Figure 1-4 As shown, a rubber pad 89 is fixedly connected to one end of the striking block 84, and the size of the rubber pad 89 is adapted to the size of the striking block 84. The rubber pad 89 protects the striking block 84 from damaging the filter screen 6. A U-shaped plate 86 is fixedly connected to the end of the guide rod 83 away from the striking block 84. The two arms of the U-shaped plate 86 are rotatably connected to the same rotating component 87, which is in contact with the eccentric circle 81. By setting the rotating component 87 inside the U-shaped plate 86 to rotate with the eccentric circle 81, the friction between the guide rod 83 and the eccentric circle 81 is reduced, facilitating the movement of the eccentric circle 81 carrying the guide rod 83. Two mutually symmetrical limiting rods 88 are fixedly connected to the arc surface of the guide rod 83, and the two limiting rods 88 are centrally symmetrical. The limiting rods 88 restrict the direction of movement of the guide rod 83, preventing it from wobbling.

[0033] Working principle: When large stones need to be crushed, the operator feeds the large stones into the shell 1 through the feed frame 2, turns on the drive mechanism 4, and drives the two first crushing rollers 5 to rotate. The first crushing rollers 5 crush the large stones, and the crushed stones fall onto the filter screen 6. The filter screen 6 filters the thoroughly crushed stones, and the stones are guided by the inclined filter screen 6 to the arc plate 71. The stones enter the gap between the arc plate 71 and the second crushing roller 72. The motor 74 is turned on, and the motor 74 drives the first sprocket 75 to rotate through the reducer. The first sprocket 75 drives the second sprocket 76 and the second crushing roller 72 to rotate through the chain 77. The protrusions 73 on the second crushing roller 72 squeeze the stones between the arc plate 71 and the second crushing roller 72, achieving the effect of secondary crushing of the stones. Finally, the crushed stones are discharged from the shell 1 through the discharge pipe 3. After the filter screen 6 screens out the stones that are not thoroughly crushed, the crushing device 7 achieves the effect of secondary crushing of the stones, improving the crushing effect of the stones.

[0034] When the first sprocket 75 rotates, it rotates along with the eccentric circle 81. When the protruding end of the eccentric circle 81 moves to the guide rod 83, the eccentric circle 81 presses against the rotating part 87 in the U-shaped plate 86. The rotating part 87 moves along with the guide rod 83 and the striking block 84 toward the filter screen 6. The guide rod 83 moves inside the guide tube 82, and the spring 85 deforms. At this time, the guide rod 83, along with the striking block 84, strikes the filter screen 6 with the help of the rubber pad 89. When the protruding end of the eccentric circle 81 moves away from the guide rod 83, the striking block 84 moves away from the filter screen 6 under the action of the spring 85's restoring force. As the eccentric circle 81 continues to rotate, the striking block 84 continuously strikes the filter screen 6. The striking block 84 set by the striking device 8 achieves the effect of striking the filter screen 6, preventing the crushed stones from clogging the filter holes of the filter screen 6, thus preventing the filter screen 6 from being used normally.

Claims

1. A crushing and screening device for road and bridge construction, characterized in that: Includes an outer shell (1), which is placed on the ground by means of legs to provide support for the whole; Feed frame (2), which is installed on the top of the outer shell (1), wherein the feed frame (2) can feed large stones into the interior of the outer shell (1); The discharge pipe (3) is installed at the bottom of the outer shell (1) and can deliver the crushed stones out of the outer shell (1); The first crushing roller (5) and two first crushing rollers (5) are rotatably connected inside the outer shell (1), wherein the first crushing roller (5) can crush large stone particles; A drive mechanism (4) is installed on the outside of the housing (1), wherein the drive mechanism (4) can drive the first crushing roller (5) inside the housing (1) to rotate; A filter screen (6) is installed inside the outer shell (1). The filter screen (6) is inclined and has a plurality of filter holes evenly distributed on its surface. A crushing device (7) is installed inside the outer casing (1), wherein the crushing device (7) can perform secondary crushing on stones that are not thoroughly crushed.

2. The crushing and screening device for road and bridge construction according to claim 1, characterized in that: The crushing device (7) includes an arc plate (71), which is fixedly connected to the inside of the outer shell (1). The arc plate (71) is located on one side of the filter screen (6). A second crushing roller (72) is rotatably connected inside the outer shell (1). The second crushing roller (72) is located at the arc plate (71). A number of protrusions (73) are evenly fixedly connected to the arc surface of the second crushing roller (72). The motor (74) is installed outside the housing (1). The motor (74) is fixedly connected to the first sprocket (75) by means of a reducer. One end of the second crushing roller (72) is fixedly connected to the second sprocket (76). A chain (77) is provided on one side of the housing (1), wherein the chain (77) is sleeved on the first sprocket (75) and the second sprocket (76).

3. The crushing and screening device for road and bridge construction according to claim 2, characterized in that: Both ends of the arc plate (71) are fixedly connected to triangular plates (78), which are installed inside the outer shell (1) by means of bolts.

4. The crushing and screening device for road and bridge construction according to claim 2, characterized in that: A guide plate (79) is fixedly connected inside the outer casing (1), wherein the guide plate (79) is located directly above the second crushing roller (72).

5. A crushing and screening device for road and bridge construction according to claim 2, characterized in that: A striking device (8) is provided on one side of the first sprocket (75). The striking device (8) includes an eccentric circle (81), wherein the eccentric circle (81) is installed on one side of the first sprocket (75). A guide tube (82) is fixedly connected inside the housing (1) by means of a support rod. A guide rod (83) is slidably connected inside the guide tube (82). One end of the guide rod (83) is located directly above the eccentric circle (81). A striking block (84) is fixedly connected to the other end of the guide tube (82). A spring (85) is fitted onto the arc surface of a guide rod (83), wherein the two ends of the spring (85) are fixedly connected to a guide tube (82) and a striking block (84), respectively.

6. The crushing and screening device for road and bridge construction according to claim 5, characterized in that: A rubber pad (89) is fixedly connected to one end of the striking block (84), and the size of the rubber pad (89) is adapted to the size of the striking block (84).

7. A crushing and screening device for road and bridge construction according to claim 5, characterized in that: The guide rod (83) is fixedly connected to a U-shaped plate (86) at one end away from the striking block (84). The two arms of the U-shaped plate (86) are rotatably connected to the same rotating component (87), wherein the rotating component (87) is in contact with the eccentric circle (81).

8. The crushing and screening device for road and bridge construction according to claim 7, characterized in that: The guide rod (83) has two mutually symmetrical limiting rods (88) fixedly connected to its arc surface, and the two limiting rods (88) are centrally symmetrical.

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