Stone crushing device for road and bridge construction

Abstract

The invention relates to the technical field of crushing devices, in particular to a stone crushing device for road and bridge construction, which comprises a shell, a crushing chamber and a crushing chamber are arranged in the shell, a guide plate extending to the crushing chamber is welded on the inner wall of the crushing chamber, and a feeding hole is formed in the transition position of the crushing chamber and the crushing chamber. And a pair of crushing rollers are rotationally inserted into the side wall of the bottom of the crushing chamber through a rotating shaft. Through the arrangement of the screw rod and the filter screen, when crushed broken stones slide into the filter screen in the discharge port along the material guide inclined surface, the filter screen can intercept broken stone particles which do not meet the requirement, so that the broken stone particles stay at the bottom of the material return barrel; therefore, the screw rod can convey broken stones which do not meet the requirements back into the crushing chamber to repeat the crushing process, and the process is repeated until the broken stones meet the screening requirements of the filter screen and then are discharged through the discharge port, so that the effect of thorough crushing is achieved, manual backfilling is not needed, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of crushing devices, and in particular relates to a stone crushing device for road and bridge construction. Background Art

[0002] Road and bridge construction refers to the survey, design, construction, maintenance and management of roads and bridges. In the process of road and bridge construction, a large amount of crushed stone is needed. Therefore, it is necessary to use crushing equipment to crush the stones into particles of suitable fineness to ensure the quality of the project.

[0003] However, the existing technology will directly discharge the stones after crushing, resulting in incomplete stone crushing, and the secondary crushing requires manual backfilling of stones, which greatly reduces the work efficiency. In addition, the existing crushing device cannot perform preliminary crushing when facing stones that are too large. Large stones will be blocked at the feed inlet, resulting in the stones not being able to fall smoothly into the device for crushing. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a stone crushing device for road and bridge construction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A stone crushing device for road and bridge construction comprises a shell, a crushing chamber and a grinding chamber are provided inside the shell, a guide plate extending to the grinding chamber is welded on the inner wall of the crushing chamber, a feed port is provided at the transition between the crushing chamber and the grinding chamber, a pair of crushing rollers are rotatably plugged into the bottom side wall of the crushing chamber through a rotating shaft, a guide slope is provided on the inner wall of the crushing chamber below the crushing roller, a discharge port is provided on the inner wall of the crushing chamber located at the downward end of the guide slope, a filter is provided on the inner wall of the discharge port, a return port connected to the crushing chamber is provided on the top of the crushing chamber, a return barrel is welded on the inner wall of the crushing chamber, the return barrel is connected to the return port, a motor is welded on the top outer wall of the shell, a screw is welded on the main shaft of the motor, the screw is rotatably plugged into the return barrel, and an impact mechanism is provided in the crushing chamber.

[0007] In the above-mentioned stone crushing device for road and bridge construction, a pulley 1 is welded on the outer wall of the rotating shaft of any one of the crushing rollers, a pulley 2 is plugged into the outer wall of the outer shell through the rotation of the rotating shaft, a transmission belt is mounted on the outer walls of the pulley 1 and the pulley 2, and the screw extends to the bottom of the crushing chamber.

[0008] In the above-mentioned stone crushing device for road and bridge construction, a bevel gear 1 is welded on the outer wall of the top end of the screw, a bevel gear 2 is welded on the outer wall of the rotating shaft of the pulley 2, the bevel gear 1 and the bevel gear 2 are meshed with each other, and a transmission chamber is opened on the inner wall of the outer shell.

[0009] In the above-mentioned stone crushing device for road and bridge construction, the bevel gear 1 and the bevel gear 2 are both located in the transmission chamber.

[0010] In the above-mentioned stone crushing device for road and bridge construction, the impact mechanism includes a lifting frame, an electric push rod is welded on the inner wall of the outer shell, and a lifting frame is welded on the outer wall of the output end of the electric push rod. The lifting frame is located below the material guide plate, and a plurality of equidistantly distributed support rods are welded on the outer wall of the lifting frame. The spacing between the support rods is smaller than the opening size of the feed port, and the support rods penetrate the material guide plate.

[0011] In the above-mentioned stone crushing device for road and bridge construction, a vertical groove is provided on the outer wall of the shell, an inclined groove is provided on the outer wall of the shell, the inclined groove is connected end to end with the vertical groove, a magnet is bonded to the inner wall of the bottom end of the vertical groove away from the inclined groove, a rack is rotatably inserted on the outer wall of the lifting frame, a magnetic column is welded on the outer wall of the rack away from the lifting frame, the magnetic column is slidably inserted in the vertical groove and the inclined groove, and the magnetic column and the magnet repel each other with the same poles.

[0012] In the above-mentioned stone crushing device for road and bridge construction, a turning frame is connected to the outer wall of the outer shell close to the vertical groove through a rotating shaft, a spur gear is welded on the outer wall of the rotating shaft of the turning frame, the spur gear is matched with the rack, a plurality of breaking hammers are welded on the outer wall of the turning frame, the breaking hammers and the support rods avoid each other, and a coil spring is welded between the outer wall of the rotating shaft of the turning frame and the outer wall of the outer shell.

[0013] In the above-mentioned stone crushing device for road and bridge construction, a support plate is welded on the outer wall of the outer shell, and the support plate is located above the vertical groove and the inclined groove. A floating frame is slidably inserted on the outer wall of the support plate, and an inclined block is welded on the outer wall of the floating frame. The inclined block is unidirectionally meshed with the spur gear, and a spring is welded between the outer wall of the floating frame and the outer wall of the support plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Through the screw and filter, when the crushed stone slides along the guide slope into the filter in the discharge port, the filter can intercept the unqualified stone particles and make them stay at the bottom of the return barrel, so that the screw can transport the unqualified stone back to the crushing chamber to repeat the above crushing process, and so on, until the crushed stone meets the screening requirements of the filter and is discharged through the discharge port, achieving a thorough crushing effect, without the need for manual backfilling, greatly improving work efficiency;

[0016] 2. Through the impact mechanism, when the stone blocks the feed inlet, the electric push rod is controlled to drive the lifting frame to reciprocate up and down. When the lifting frame moves up, the support rod pushes the stone on the guide plate upward. When the magnetic column slides along the inclined groove to the top of the vertical groove, the rack pushes the inclined block to disengage from the spur gear, so that under the action of the coil spring, the flip frame drives the breaker hammer to flip downward quickly, so that the breaker hammer can hit the stone for crushing. Supporting the stone by the support rod can reduce the force area of ​​the stone, improve the stress concentration effect, and thus improve the crushing effect. When the lifting frame moves downward, the lifting frame drives the vertical rack to mesh with the spur gear, so that the spur gear drives the flip frame to flip upward and reset, and so on. Under multiple impacts of the breaker hammer, a single large stone is separated into multiple small stones to avoid blocking the feed inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the present invention is shown in three dimensions. Figure 1 .

[0018] Figure 2 The overall structure of the present invention is shown in three dimensions. Figure 2 .

[0019] Figure 3 for Figure 2 A partial enlarged view of the structure at point A.

[0020] Figure 4 The overall structure of the present invention is shown in a three-dimensional cross-sectional view. Figure 1 .

[0021] Figure 5 The overall structure of the present invention is shown in a three-dimensional cross-sectional view. Figure 2 .

[0022] Figure 6 It is a three-dimensional schematic diagram of the screw and the return barrel of the present invention.

[0023] Figure 7 It is a three-dimensional schematic diagram of the lifting frame and the turning frame of the present invention.

[0024] Figure 8 It is a plan view of the impact mechanism of the present invention in a working state.

[0025] In the figure: 1. shell; 11. crushing chamber; 111. guide plate; 12. crushing chamber; 121. discharge port; 122. filter screen; 123. return port; 124. return barrel; 125. guide slope; 13. transmission chamber; 14. support plate; 15. vertical slot; 151. magnet; 16. inclined slot; 17. feed port; 2. motor; 21. screw; 22. bevel gear one; 3. crushing roller; 31. pulley one; 32. transmission belt; 4. pulley two; 41. bevel gear two; 5. lifting frame; 51. electric push rod; 52. support rod; 53. rack; 531. magnetic column; 6. turning frame; 61. breaker hammer; 62. spur gear; 63. coil spring; 7. floating frame; 71. oblique block; 72. spring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] See also Figure 1-Figure 8The present invention provides a technical solution: a stone crushing device for road and bridge construction, comprising a shell 1, a crushing chamber 11 and a pulverizing chamber 12 are provided inside the shell 1, a guide plate 111 extending to the pulverizing chamber 12 is welded on the inner wall of the crushing chamber 11, a feed port 17 is provided at the transition between the crushing chamber 11 and the pulverizing chamber 12, a pair of pulverizing rollers 3 are plugged and connected to the bottom side wall of the pulverizing chamber 12 through a rotating shaft, a guide slope 125 is provided on the inner wall of the pulverizing chamber 12 below the pulverizing roller 3, a discharge port 121 is provided on the inner wall of the pulverizing chamber 12 at the end inclined downward by the guide slope 125, a filter screen 122 is provided on the inner wall of the discharge port 121, a return port 123 connected to the crushing chamber 11 is provided on the top of the pulverizing chamber 12, and a return barrel 124 is welded on the inner wall of the pulverizing chamber 12 The return barrel 124 is connected to the return port 123, a motor 2 is welded on the top outer wall of the shell 1, a screw 21 is welded on the main shaft of the motor 2, the screw 21 is rotatably inserted in the return barrel 124, an impact mechanism is arranged in the crushing chamber 11, a pulley 31 is welded on the outer wall of the rotating shaft of any one of the crushing rollers 3, a pulley 24 is rotatably inserted on the outer wall of the shell 1 through the rotating shaft, a transmission belt 32 is set on the outer walls of the pulley 31 and the pulley 24, the screw 21 extends to the bottom of the crushing chamber 12, a bevel gear 22 is welded on the outer wall of the top end of the screw 21, a bevel gear 241 is welded on the outer wall of the rotating shaft of the pulley 24, the bevel gear 22 and the bevel gear 241 are meshed with each other, a transmission chamber 13 is opened on the inner wall of the shell 1, and the bevel gear 22 and the bevel gear 241 are both located in the transmission chamber 13.

[0029] The above content is further elaborated: when working, the motor 2 is started, and the motor 2 drives the screw 21 and the bevel gear 1 22 to rotate. Under the meshing action of the bevel gear 1 22 and the bevel gear 2 41, the pulley 2 4 drives the pulley 1 31 to rotate, so that the pulley 1 31 drives a crushing roller 3 to rotate. Since the two crushing rollers 3 are meshed with each other, the two crushing rollers 3 rotate synchronously, and the stones are put into the crushing chamber 11. The stones can slide into the crushing chamber 12 along the guide plate 111, and then fall on the crushing roller 3 to be crushed. The crushed stones slide into the discharge port 1 along the guide slope 125. 21, automatic unloading is carried out, and the crushed stone particles that do not meet the requirements can be intercepted by the set filter screen 122, so that they stay at the bottom of the return barrel 124, so that the screw 21 can transport the crushed stone that does not meet the requirements upward to the return port 123 during the rotation process, and then the crushed stone that does not meet the requirements returns to the crushing chamber 11 through the return port 123 to repeat the above-mentioned crushing process, and so on. The cycle continues until the crushed stone meets the screening requirements of the filter screen 122 and is discharged through the discharge port 121, achieving the effect of thorough crushing, without the need for manual backfilling, and greatly improving work efficiency.

[0030] Specifically, the impact mechanism includes a lifting frame 5, an electric push rod 51 is welded on the inner wall of the shell 1, and a lifting frame 5 is welded on the outer wall of the output end of the electric push rod 51. The lifting frame 5 is located below the guide plate 111, and a plurality of equidistantly distributed support rods 52 are welded on the outer wall of the lifting frame 5. The spacing between the support rods 52 is smaller than the opening size of the feed port 17. The support rods 52 penetrate the guide plate 111. A vertical groove 15 is provided on the outer wall of the shell 1, and an inclined groove 16 is provided on the outer wall of the shell 1. The inclined groove 16 is connected to the vertical groove 15 end to end. A magnet 151 is bonded to the inner wall of the bottom end of the vertical groove 15 away from the inclined groove 16. A rack 53 is rotatably inserted on the outer wall of the lifting frame 5, and a magnetic column 531 is welded on the outer wall of the end of the rack 53 away from the lifting frame 5. The magnetic column 531 is slidably inserted in the vertical groove 1 5 and the inclined groove 16, the magnetic column 531 and the magnet 151 repel each other with the same poles, and a flip frame 6 is inserted and connected to the outer wall of the shell 1 close to the vertical groove 15 through a rotating shaft, and a spur gear 62 is welded on the outer wall of the rotating shaft of the flip frame 6, and the spur gear 62 is adapted to the rack 53, and a plurality of breakers 61 are welded on the outer wall of the flip frame 6, and the breakers 61 and the support rod 52 avoid each other, and a coil spring 63 is welded between the outer wall of the rotating shaft of the flip frame 6 and the outer wall of the shell 1, and a support plate 14 is welded on the outer wall of the shell 1, and the support plate 14 is located above the vertical groove 15 and the inclined groove 16, and a floating frame 7 is slidably inserted on the outer wall of the support plate 14, and an inclined block 71 is welded on the outer wall of the floating frame 7, and the inclined block 71 is unidirectionally meshed with the spur gear 62, and a spring 72 is welded between the outer wall of the floating frame 7 and the outer wall of the support plate 14.

[0031] In the initial state, the electric push rod 51 is in an extended state, the lifting frame 5 is located at the bottom of the shell 1, and the support rod 52 is retracted under the guide plate 111, so as to avoid the stones on the guide plate 111. Under the limiting action of the inclined block 71, the flip frame 6 remains in a vertical state. At this time, the coil spring 63 is in a compressed state. At this time, the rack 53 is in a vertical state, and the magnetic column 531 is located at the bottom end of the vertical slot 15.

[0032] The above content is further elaborated: when the stone is large in size, the stone blocks the feed port 17. At this time, the electric push rod 51 is controlled to reciprocate and retract, so that the electric push rod 51 drives the lifting frame 5 to reciprocate up and down. When the lifting frame 5 moves up, the support rod 52 pushes the stone on the guide plate 111 upward, and at the same time, the lifting frame 5 moves up and drives the rack 53 to move upward. Under the action of the same poles of the magnet 151 and the magnetic column 531 repelling each other, the magnetic column 531 slides into the inclined slot 16, so that the rack 53 During the upward movement, the spur gear 62 is in an inclined state, thereby achieving the effect of avoiding the position of the spur gear 62. When the magnetic column 531 slides along the inclined slot 16 to the top of the vertical slot 15, the rack 53 swings to a vertical state. At the same time, the rack 53 pushes the floating frame 7 to move upward, so that the floating frame 7 drives the inclined block 71 to disengage from the spur gear 62, so that under the action of the coil spring 63, the flip frame 6 drives the breaker 61 to flip downward quickly, so that the breaker 61 can hit the stone to break it. When the lifting frame 5 moves downward, the lifting frame 5 drives the vertical The straight rack 53 meshes with the spur gear 62, so that the spur gear 62 drives the flip frame 6 to flip upward and reset, and so on. Under the multiple impacts of the crushing hammer 61, a single large stone is separated into multiple small stones to avoid the situation of blocking the feed port 17. The support rod 52 supports the stone, which can reduce the force area of ​​the stone, improve the stress concentration effect, and thus improve the crushing effect. When the support rod 52 moves downward with the lifting frame 5, the guide plate 111 can clamp the stone in the gap between the support rod 52. The stones are scraped off. Since the spacing between the support rods 52 is smaller than the opening size of the feed port 17, the size of the clamped stones is also smaller than the opening size of the feed port 17, so that the crushed stones can smoothly pass through the feed port 17 into the crushing chamber 12. When the rack 53 is disengaged from the floating frame 7, under the action of the spring 72, the bevel block 71 is once again unidirectionally meshed with the spur gear 62. When the spur gear 62 drives the flip frame 6 to reset, the spur gear 62 can push it upward along the inclined surface of the bevel block 71 to avoid the position.

[0033] The working principle and use process of the present invention are as follows: when working, the motor 2 is started, and the motor 2 drives the screw 21 and the bevel gear 1 22 to rotate. Under the meshing action of the bevel gear 1 22 and the bevel gear 2 41, and the transmission action of the transmission belt 32, the two crushing rollers 3 rotate synchronously, and the stones are put into the crushing chamber 11. The stones can slide into the crushing chamber 12 along the guide plate 111, and then fall on the crushing roller 3 to be crushed. The crushed stones slide along the guide slope 125 into the filter screen 122 in the discharge port 121, and the filter screen 122 can intercept the crushed stone particles that do not meet the requirements and make them stay at the bottom of the return barrel 124, so that the screw 21 can transport the crushed stone that does not meet the requirements back to the crushing chamber 11 to repeat the above crushing process, and so on. The cycle continues until the crushed stone meets the screening requirements of the filter screen 122 and is discharged through the discharge port 121, achieving a thorough crushing effect without manual backfilling, greatly improving work efficiency. When the stone is blocked at the feed port 17, the electric push rod 51 is controlled to drive the lifting frame 5 to reciprocate up and down. When the lifting frame 5 moves upward, the support rod 52 pushes the stone on the guide plate 111 upward, and at the same time, the lifting frame 5 moves upward and drives the rack 53 to move upward. Under the action of the same poles of the magnet 151 and the magnetic column 531 repelling each other, the rack 53 avoids the spur gear 62 during the upward movement. When the magnetic column 531 slides along the inclined groove 16 to the top of the vertical groove 15, the rack 53 swings to a vertical state, and at the same time, the rack 53 pushes the inclined block 71 to disengage from the spur gear 62, so that under the action of the coil spring 63, the overturning frame 6 drives the breaker 61 It quickly flips downward so that the breaker 61 can hit the stone to crush it. Supporting the stone through the support rod 52 can reduce the force area of ​​the stone, improve the stress concentration effect, and thus improve the crushing effect. When the lifting frame 5 moves downward, the lifting frame 5 drives the vertical rack 53 to engage with the spur gear 62, so that the spur gear 62 drives the flip frame 6 to flip upward and reset, and so on. Under the multiple impacts of the breaker 61, a single large stone is separated into multiple small stones, avoiding the situation of clogging the feed port 17.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stone crushing device for road and bridge construction, comprising a housing (1), characterized in that: A crushing chamber (11) and a pulverizing chamber (12) are provided inside the housing (1); a guide plate (111) extending toward the pulverizing chamber (12) is welded on the inner wall of the crushing chamber (11); a feed inlet (17) is provided at the transition between the crushing chamber (11) and the pulverizing chamber (12); a pair of pulverizing rollers (3) are rotatably plugged into the bottom side wall of the pulverizing chamber (12) via a rotating shaft; a guide slope (125) is provided on the inner wall of the pulverizing chamber (12) below the pulverizing rollers (3); an outlet is provided on the inner wall of the pulverizing chamber (12) at the end inclined downward from the guide slope (125). A material port (121) is provided, a filter screen (122) is arranged on the inner wall of the material port (121), a return port (123) communicating with the crushing chamber (11) is provided on the top of the crushing chamber (12), a return barrel (124) is welded on the inner wall of the crushing chamber (12), the return barrel (124) is communicated with the return port (123), a motor (2) is welded on the top outer wall of the housing (1), a screw (21) is welded on the main shaft of the motor (2), the screw (21) is rotatably inserted into the return barrel (124), and an impact mechanism is arranged in the crushing chamber (11).

2. The stone crushing device for road and bridge construction according to claim 1 is characterized in that: A pulley 1 (31) is welded on the outer wall of the rotating shaft of any one of the crushing rollers (3); a pulley 2 (4) is plugged into the outer wall of the housing (1) via the rotating shaft; a transmission belt (32) is sleeved on the outer walls of the pulley 1 (31) and the pulley 2 (4); and the screw (21) extends to the bottom of the crushing chamber (12).

3. The stone crushing device for road and bridge construction according to claim 2 is characterized in that: A bevel gear 1 (22) is welded on the outer wall of the top end of the screw rod (21), a bevel gear 2 (41) is welded on the outer wall of the rotating shaft of the pulley 2 (4), the bevel gear 1 (22) and the bevel gear 2 (41) are meshed with each other, and a transmission chamber (13) is provided on the inner wall of the housing (1).

4. The stone crushing device for road and bridge construction according to claim 3 is characterized by: The bevel gear 1 (22) and the bevel gear 2 (41) are both located in the transmission chamber (13).

5. The stone crushing device for road and bridge construction according to claim 1 is characterized in that: The impact mechanism comprises a lifting frame (5), an electric push rod (51) is welded on the inner wall of the housing (1), a lifting frame (5) is welded on the outer wall of the output end of the electric push rod (51), the lifting frame (5) is located below the material guide plate (111), and a plurality of equidistantly distributed support rods (52) are welded on the outer wall of the lifting frame (5), the spacing between the support rods (52) is smaller than the opening size of the feed port (17), and the support rods (52) penetrate the material guide plate (111).

6. The stone crushing device for road and bridge construction according to claim 5, characterized in that: A vertical groove (15) is provided on the outer wall of the shell (1), and an inclined groove (16) is provided on the outer wall of the shell (1); the inclined groove (16) and the vertical groove (15) are connected end to end; a magnet (151) is bonded to the inner wall of the bottom end of the vertical groove (15) away from the inclined groove (16); a rack (53) is rotatably plugged on the outer wall of the lifting frame (5); a magnetic column (531) is welded on the outer wall of the rack (53) away from the lifting frame (5); the magnetic column (531) is slidably plugged into the vertical groove (15) and the inclined groove (16); the magnetic column (531) and the magnet (151) repel each other with the same poles.

7. A stone crushing device for road and bridge construction according to claim 6, characterized in that: A flip frame (6) is rotatably plugged into the outer wall of the housing (1) on one side close to the vertical groove (15) via a rotating shaft, a spur gear (62) is welded on the outer wall of the rotating shaft of the flip frame (6), the spur gear (62) is matched with the rack (53), a plurality of crushing hammers (61) are welded on the outer wall of the flip frame (6), the crushing hammers (61) and the support rods (52) are mutually avoided, and a coil spring (63) is welded between the outer wall of the rotating shaft of the flip frame (6) and the outer wall of the housing (1).

8. The stone crushing device for road and bridge construction according to claim 7 is characterized in that: A support plate (14) is welded on the outer wall of the housing (1), the support plate (14) is located above the vertical groove (15) and the inclined groove (16), a floating frame (7) is slidably inserted on the outer wall of the support plate (14), an inclined block (71) is welded on the outer wall of the floating frame (7), the inclined block (71) is unidirectionally meshed with the spur gear (62), and a spring (72) is welded between the outer wall of the floating frame (7) and the outer wall of the support plate (14).

Images