A type of crushing equipment for highway bridge construction

Abstract

This invention discloses a crushing equipment for highway bridge construction, including a cone crushing mechanism. The cone crushing mechanism includes a crushing chamber, a cone-shaped crushing body disposed inside the crushing chamber, and a main shaft fixed below the cone-shaped crushing body. A rotating structure capable of driving the main shaft to rotate is provided on the lower side of the crushing chamber. It also includes a screening mechanism, which includes a screening chamber installed below the crushing chamber and a cone-shaped screen located inside the screening chamber. An inner cylinder is installed inside the upper end of the cone-shaped screen, and a cam is provided inside the inner cylinder. The cam is fixedly connected to the lower end of the main shaft. When the cam rotates, its large-diameter end can rotate along the inner cylinder and continuously push the inner cylinder in different directions, so that the cone-shaped screen is in a state of continuous rapid movement in various directions. This allows the cone-shaped screen to screen materials better, eliminating the need for an external vibrating screen and saving costs.

Description

Technical Field

[0001] This invention relates to the field of crushing technology for highway bridge construction, specifically to a crushing equipment for highway bridge construction. Background Technology

[0002] Existing transportation roads require a large amount of crushed stone during construction. Crushed stone is made from natural rocks, pebbles or ores through mechanical crushing and screening, and consists of rock particles with a diameter greater than 4.75mm.

[0003] The original stone crushing process involves first crushing the raw materials in a coarse crusher, then further crushing them in a fine crusher, and finally conveying them to a screening machine via a lifting facility. This process requires separate crushers and vibrating screens, which increases equipment costs. Therefore, we propose a stone crushing equipment for highway bridge construction. Summary of the Invention

[0004] The purpose of this invention is to provide a crushing equipment for highway bridge construction, so as to solve the problem that the existing technology requires separate crushers and vibrating screens, which leads to increased equipment costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crushing equipment for highway bridge construction, comprising a cone crushing mechanism, the cone crushing mechanism comprising a crushing chamber, a cone-shaped crushing body disposed inside the crushing chamber, and a main shaft fixed below the cone-shaped crushing body, a rotating structure capable of driving the main shaft to rotate is provided on the lower side of the crushing chamber, and further comprising a screening mechanism, the screening mechanism comprising a screening chamber installed below the crushing chamber and a cone-shaped screening screen located inside the screening chamber, an inner cylinder installed inside the upper end of the cone-shaped screening screen, a cam provided inside the inner cylinder, the cam being fixedly connected to the lower end of the main shaft.

[0006] Furthermore, it also includes a raised platform, with columns installed on both sides below the screening chamber, and the lower ends of the columns fixed to the upper surface of the raised platform.

[0007] Furthermore, a primary hammer chamber is installed above the cone crusher, and an opening is provided on the lower end face of the primary hammer chamber. Additional platforms are fixed on both sides of the crushing chamber, and a bracket is installed above the additional platforms. A hammer lifting structure is provided between the two brackets. The hammer lifting structure includes a central shaft rotatably installed between the two brackets, a lifting rope wound around the middle of the central shaft, and a gravity hammer fixed at the lower end of the lifting rope. A lifting motor for driving the central shaft to rotate forward and backward is installed inside one of the brackets.

[0008] Furthermore, a stress-bearing layer is fixedly connected to the inner wall of the crushing chamber. The rotating structure includes a first driven bevel gear fixed to the upper end of the main shaft, a first driving bevel gear meshing with one side of the first driven bevel gear, and a main motor located on one side below the crushing chamber. The main motor has a left motor shaft at one end near the first driving bevel gear, and the left motor shaft is fixedly connected to the first driving bevel gear.

[0009] Furthermore, a first roller is uniformly and rotatably installed on the inner wall of the inner cylinder, and an integral auxiliary cylindrical part is provided on the lower circumference of the conical screen. Limiting guide components are provided at four positions on the lower part of the screen chamber. The limiting guide components include guide rods that are inserted into the screen chamber radially from the outside of the screen chamber, springs sleeved on the guide rods, and steel channels installed at one end of the guide rods inside the screen chamber. The springs are located inside the screen chamber, and a limiting plate is installed at one end of the guide rods outside the screen chamber. Rollers are rotatably installed inside the steel channel on the side near the auxiliary cylindrical part.

[0010] Furthermore, a receiving hopper is installed below the screening chamber at a position corresponding to the auxiliary cylindrical part, and a feeding mechanism is provided in the middle of the upper surface of the platform. A first discharge pipe is installed between the receiving hopper and the feeding mechanism.

[0011] Furthermore, a downward-sloping hopper is installed on the lower circumference of the conical screen, and a coarse material discharge pipe extends from the lower side of the downward-sloping hopper. A fine crushing mechanism is installed above the platform at a position corresponding to the lower end of the coarse material discharge pipe.

[0012] Furthermore, the feeding mechanism includes a feeding cylinder horizontally arranged above the platform, an auger rotatably installed inside the feeding cylinder, a feeding motor for driving the auger to rotate, and support feet for supporting the feeding cylinder. The end of the feeding cylinder away from the feeding motor protrudes from the platform, and a discharge cylinder is provided below the end of the feeding cylinder that protrudes from the platform.

[0013] Furthermore, the fine crushing mechanism includes a fine crushing chamber, a support leg connecting the fine crushing chamber and the platform, extrusion rollers rotatably mounted side-by-side inside the fine crushing chamber, and a gear fixedly inserted into one end of the extrusion rollers. A second feeding pipe is connected between the lower part of the fine crushing chamber and the feeding cylinder. The main motor is a dual-shaft motor, and a right motor shaft is provided at the end of the dual-shaft motor away from the left motor shaft. A power transmission mechanism is provided between one of the extrusion rollers on the right motor shaft.

[0014] Furthermore, the power transmission mechanism includes a second driving bevel gear fixed on the right motor shaft, a stabilizing frame fixed on the side of the crushing chamber near the main motor, a vertical shaft rotatably mounted between the stabilizing frame and the platform via bearings, a second driven bevel gear fixed on the vertical shaft and capable of meshing with the second driving bevel gear, a worm gear portion disposed at the lower part of the vertical shaft, and a turbine portion fixed at one end of one of the extrusion rollers and capable of meshing with it.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The present invention has an inner cylinder installed inside the upper end of the conical screen mesh, and a cam is provided inside the inner cylinder. The cam is fixedly connected to the lower end of the main shaft. When the main shaft drives the upper conical crushing body to rotate, it can also drive the lower cam to rotate. When the cam rotates, its large diameter end can rotate along the inner cylinder and continuously push the inner cylinder in different directions, so that the conical screen mesh is in a state of continuous rapid movement in various directions. Thus, the operation of the conical screen mesh is similar to vibration, thereby achieving better screening of materials with the conical screen mesh. Screening can be achieved without an external vibrating screen, which saves costs.

[0017] 2. The present invention provides a limiting and guiding component for the conical screen mesh. When the cam pushes the conical screen mesh to run, the auxiliary cylindrical part runs together. The auxiliary cylindrical part can push the steel trough, and the auxiliary cylindrical part will roll and rub against the roller. When the auxiliary cylindrical part pushes the steel trough, the spring will be in a compressed state. The guide rod can guide the spring. When the entire limiting and guiding component runs, it can limit and guide the auxiliary cylindrical part, ensuring the stable operation of the conical screen mesh.

[0018] 3. The present invention is equipped with a gravity hammer, which can be cracked by the gravity hammer before it enters the cone crusher, thereby avoiding the situation where huge stones cannot be crushed by the cone crusher.

[0019] 4. The present invention is equipped with a downward-inclined bucket and a fine crushing mechanism, so that the coarse stones remaining on the surface of the conical screen can reach the interior of the fine crushing mechanism along the downward-inclined bucket for fine crushing, so that the stones meet the required size.

[0020] 5. The present invention allows fine materials exposed on the conical screen and stones crushed inside the crushing mechanism to be conveyed by a single feeding mechanism, avoiding the trouble of having multiple conveying devices and lifting materials upwards.

[0021] 6. The present invention includes a power transmission mechanism, which allows the fine crushing mechanism to be driven by the main motor of the cone crushing mechanism, thus avoiding the increased cost caused by setting up multiple drive structures. Attached Figure Description

[0022] Figure 1This is an overall drawing of a road bridge construction stone crushing equipment according to the present invention;

[0023] Figure 2 This is an internal cross-sectional view of a road bridge construction stone crushing device according to the present invention;

[0024] Figure 3 This invention relates to a crushing equipment for highway bridge construction. Figure 2 A partial view;

[0025] Figure 4 This is a perspective view of the downward-tilting bucket in a road bridge construction stone crushing equipment according to the present invention;

[0026] Figure 5 This is a top view of a conical screen and a limiting guide assembly in a crushing stone equipment for highway bridge construction according to the present invention.

[0027] Figure 6 This is a schematic diagram of the inner cylinder in a road bridge construction stone crushing equipment according to the present invention;

[0028] Figure 7 This is a schematic diagram of the cam structure in a road bridge construction crushing equipment according to the present invention;

[0029] Figure 8 This is a schematic diagram of the limiting and guiding component in a crushing stone equipment for highway bridge construction according to the present invention;

[0030] Figure 9 This is a rear view of the power transmission mechanism in a road bridge construction crushing equipment according to the present invention.

[0031] Figure 10 This is a schematic diagram of the hammer lifting structure in a crushing stone equipment for highway bridge construction according to the present invention;

[0032] Figure 11 This is a schematic diagram of the internal structure of the feeding mechanism in a road bridge construction crushing equipment according to the present invention.

[0033] In the diagram: 1. High platform; 2. Additional platform; 3. Support frame; 4. Hammer lifting structure; 41. Lifting motor; 42. Central shaft; 43. Lifting rope; 44. Gravity hammer; 5. Initial hammer chamber; 51. Opening; 6. Cone crushing mechanism; 61. Crushing chamber; 62. Load-bearing layer; 63. Cone crushing body; 64. Main motor; 641. Left motor shaft; 642. Right motor shaft; 65. Main shaft; 66. First driven bevel gear; 67. First driving bevel gear; 7. Screening mechanism; 71. Screening chamber; 72. Conical screen; 73. Inner cylinder; 731. First drum; 74. Downward-inclined bucket; 741. Coarse material discharge pipe; 75. Auxiliary cylindrical section; 76. Limiting Positioning guide assembly; 761, roller; 762, steel channel; 763, spring; 764, guide rod; 765, limiting plate; 77, cam; 8, fine crushing mechanism; 81, fine crushing chamber; 82, extrusion roller; 83, gear; 84, support leg; 9, feeding mechanism; 91, feeding cylinder; 92, feeding motor; 93, support foot; 94, auger; 95, discharge cylinder; 10, column; 11, receiving hopper; 12, first discharge pipe; 13, power transmission mechanism; 131, vertical shaft; 132, second driving bevel gear; 133, second driven bevel gear; 134, stabilizing frame; 135, worm gear section; 136, turbine section; 14, second discharge pipe. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1 and Figure 2 As shown, the present invention provides a technical solution: a crushing equipment for highway bridge construction, including a high platform 1, a screening mechanism 7 above the high platform 1, a column 10 for supporting the screening mechanism 7 between the screening mechanism 7 and the high platform 1, a cone crushing mechanism 6 above the screening mechanism 7, and a preliminary hammer structure above the cone crushing mechanism 6, which can crush large stones, thereby facilitating the crushing of the cone crushing mechanism 6;

[0036] Combination Figure 1 , Figure 2 and Figure 10As shown, the above-mentioned hammer structure includes: a primary hammer chamber 5 installed above the cone crusher 6 as the hammering site; additional platforms 2 fixed on both sides of the crushing chamber 61; a support 3 installed above the additional platforms 2; and a hammer lifting structure 4 between the two supports 3. The hammer lifting structure 4 can lift and lower the hammer, thereby enabling the hammer to crush large stones. Preferably, the hammer lifting structure 4 includes a central shaft 42 rotatably installed between the two supports 3, a lifting rope 43 wound around the middle of the central shaft 42, and a gravity hammer 44 fixed to the lower end of the lifting rope 43. Furthermore, one of the brackets 3 is equipped with a lifting motor 41 for driving the central shaft 42 to rotate in both directions. When the lifting motor 41 drives the central shaft 42 to wind up the lifting rope 43, the gravity hammer 44 can move upward. When the lifting motor 41 drives the central shaft 42 to unwind the lifting rope 43, the gravity hammer 44 loses the upward tension and falls freely. As a result, the gravity hammer 44 can crack large stones. An opening 51 is provided at the lower end of the initial hammer chamber 5, so that the cracked stones can enter the cone crushing mechanism 6 for further crushing through the opening 51.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The cone crusher 6 includes a crushing chamber 61 as the crushing site, a cone-shaped crushing body 63 disposed inside the crushing chamber 61, and a main shaft 65 fixed below the cone-shaped crushing body 63. The main shaft 65 can drive the cone-shaped crushing body 63 to rotate. Since the cone-shaped crushing body 63 and the main shaft 65 are eccentrically arranged (existing technology), the cone-shaped crushing body 63 can crush the cracked stone when it rotates. In order to extend the service life of the inner wall of the crushing chamber 61, a stress-bearing layer 62 is fixedly connected to the inner wall of the crushing chamber 61. The stress-bearing layer 62 can directly contact the stone, reducing the contact between the stone and the crushing chamber 61.

[0038] like Figure 4 In this embodiment, in order to achieve the rotation of the main shaft 65, a rotating structure capable of driving the main shaft 65 to rotate is provided on the lower side of the crushing chamber 61. The rotating structure includes a first driven bevel gear 66 fixed to the upper end of the main shaft 65, a first driving bevel gear 67 meshing with one side of the first driven bevel gear 66, and a main motor 64 located on the lower side of the crushing chamber 61. The end of the main motor 64 near the first driving bevel gear 67 is provided with a left motor shaft 641, and the left motor shaft 641 is fixedly connected to the first driving bevel gear 67. That is, when the main motor 64 is working, it can drive the left motor shaft 641 to rotate, thereby realizing the rotation of the first driving bevel gear 67. When the first driving bevel gear 67 rotates, it can drive the first driven bevel gear 66 to rotate, thereby realizing the rotation of the main shaft 65. The main shaft 65 can then drive the cone crushing body 63 to rotate.

[0039] Combination Figure 1 , Figure 2, Figure 3 and Figure 4 The screening mechanism 7 is located below the crushing chamber 61. The screening mechanism 7 includes a screening chamber 71 installed below the crushing chamber 61 as a screening site and a conical screen 72 located inside the screening chamber 71 as the screening body. That is, the stones crushed by the upper cone crushing mechanism 6 can reach the conical screen 72. Stones that meet the size requirements will pass through the mesh on the conical screen 72 and fall down, while larger stones will remain on the conical screen 72 and go down along the inclined surface of the conical screen 72.

[0040] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 To achieve better material screening with the conical screen 72, an inner cylinder 73 is installed inside the upper end of the conical screen 72. A cam 77 is provided inside the inner cylinder 73. The cam 77 is fixedly connected to the lower end of the main shaft 65. When the main shaft 65 drives the upper conical crushing body 63 to rotate, it can also drive the lower cam 77 to rotate. When the cam 77 rotates, its large-diameter end can rotate along the inner cylinder 73 (preferably, in order to reduce the wear between the cam 77 and the inner cylinder 73, a first roller 731 is uniformly rotated and installed on the inner wall of the inner cylinder 73), and continuously push the inner cylinder 73 in different directions, so that the conical screen 72 is in a state of continuous rapid movement in all directions. Thus, the operation of the conical screen 72 is similar to vibration, which can achieve better material screening with the conical screen 72. Material screening can be achieved without an external vibrating screen, which saves costs.

[0041] like Figure 3 , Figure 5 and Figure 8As shown, in order to ensure that the conical screen 72 moves stably and along a path when the cam 77 drives it, an integrated auxiliary cylindrical part 75 is provided on the lower circumference of the conical screen 72. Limiting and guiding components 76 are provided at four positions on the auxiliary cylindrical part 75 inside the screening chamber 71. The limiting and guiding components 76 can limit and guide the auxiliary cylindrical part 75, thereby indirectly limiting and guiding the conical screen 72. Specifically, in this embodiment, the limiting and guiding components 76 include guide rods 764 that radially insert into the screening chamber 71 from the outside, springs 763 sleeved on the guide rods 764, and springs 763 installed on the guide rods 764 at the screen... A steel trough 762 is located at one end of the material chamber 71. A spring 763 is located inside the screening chamber 71. A guide rod 764 is located outside the screening chamber 71 and a limit plate 765 is installed at one end. A pair of rollers 761 are rotatably installed inside the steel trough 762 near the auxiliary cylindrical part 75. That is, when the cam 77 pushes the conical screen 72, the auxiliary cylindrical part 75 moves together. The auxiliary cylindrical part 75 can push the steel trough 762, and the auxiliary cylindrical part 75 will roll and rub against the rollers 761. When the auxiliary cylindrical part 75 pushes the steel trough 762, the spring 763 will be in a compressed state. The guide rod 764 can guide the spring 763. When the entire limit and guide assembly 76 is running, it can limit and guide the auxiliary cylindrical part 75.

[0042] Combination Figure 1 , Figure 2 and Figure 3 As shown, a receiving hopper 11 is installed below the screening chamber 71 at a position corresponding to the auxiliary cylindrical part 75. A feeding mechanism 9 is provided in the middle of the upper surface of the platform 1. A first discharge pipe 12 is installed between the receiving hopper 11 and the feeding mechanism 9. Stones of the correct size that are screened by the conical screen 72 are sent to the feeding mechanism 9 through the receiving hopper 11 and the first discharge pipe 12.

[0043] Reference Figure 2 , Figure 3 and Figure 4 In order to allow stones that do not meet the size requirements left on the conical screen 72 to continue to be crushed, a downward-inclined bucket 74 is installed on the outer side of the lower circumference of the conical screen 72. A coarse material discharge pipe 741 extends from the lower side of the downward-inclined bucket 74. A fine crushing mechanism 8 is installed above the platform 1 at a position corresponding to the lower end of the coarse material discharge pipe 741. That is, the coarse material left on the conical screen 72 can move downward along the downward-inclined bucket 74 and reach the interior of the fine crushing mechanism 8 through the coarse material discharge pipe 741 for fine crushing.

[0044] like Figure 2 , Figure 3 and Figure 11In this embodiment, the feeding mechanism 9 includes a feeding cylinder 91 horizontally arranged above the platform 1, an auger 94 rotatably installed inside the feeding cylinder 91, a feeding motor 92 for driving the auger 94 to rotate, and a support foot 93 for supporting the feeding cylinder 91. The end of the feeding cylinder 91 away from the feeding motor 92 protrudes from the platform 1, and a discharge cylinder 95 is provided below the end of the feeding cylinder 91 that protrudes from the platform 1. That is, when the feeding motor 92 is working, the auger 94 can be rotated. When the auger 94 rotates, the material inside the feeding cylinder 91 can be conveyed to the right and discharged from the discharge cylinder 95. The material can be received from the position below the platform 1 corresponding to the discharge cylinder 95.

[0045] like Figure 2 and Figure 3 As shown, specifically, the fine crushing mechanism 8 here includes a fine crushing chamber 81, a support leg 84 connecting the fine crushing chamber 81 and the platform 1, a squeezing roller 82 rotatably installed side by side inside the fine crushing chamber 81, and a gear 83 fixedly inserted into one end of the squeezing roller 82. Since the end gears 83 of the two squeezing rollers 82 mesh, the two squeezing rollers 82 rotate relative to each other. When they rotate relative to each other, they can crush coarse stones to achieve fine crushing. A second feeding pipe 14 is connected between the bottom of the fine crushing chamber 81 and the feeding cylinder 91, so that the stones after fine crushing can reach the inside of the feeding cylinder 91 through the second feeding pipe 14 and be fed.

[0046] Reference Figure 3 and Figure 9 In order to achieve the rotation of one of the extrusion rollers 82, the main motor 64 is set as a dual-axis motor, and the end of the dual-axis motor away from the left motor shaft 641 is provided with a right motor shaft 642. A power transmission mechanism 13 is provided between the right motor shaft 642 and one of the extrusion rollers 82. The power transmission mechanism 13 can transmit the driving force of the right motor shaft 642 to one of the extrusion rollers 82.

[0047] Continue to refer to Figure 3 and Figure 9In this embodiment, the power transmission mechanism 13 includes a second driving bevel gear 132 fixed on the right motor shaft 642, a stabilizing frame 134 fixed on the side of the crushing chamber 61 near the main motor 64, a vertical shaft 131 rotatably mounted between the stabilizing frame 134 and the platform 1 via bearings, a second driven bevel gear 133 fixed on the vertical shaft 131 and capable of meshing with the second driving bevel gear 132, a worm gear 135 disposed at the lower part of the vertical shaft 131, and a turbine part 136 fixed at one end of one of the extrusion rollers 82 and capable of meshing with the worm gear 135. In summary, when the main motor 64 drives the right motor shaft 642 to rotate, the second driving bevel gear 132 can rotate, thereby driving the second driven bevel gear 133 to rotate. When the second driven bevel gear 133 rotates, it can drive the vertical shaft 131 to rotate. When the vertical shaft 131 rotates, it can drive the worm gear 135 to rotate, thereby driving the turbine part 136 to rotate. When the turbine part 136 rotates, it can cause one of the extrusion rollers 82 to rotate.

[0048] The working principle of this invention is as follows: When using this device, large stones are fed into the initial hammer chamber 5 by a crane or excavator. When the lifting motor 41 drives the central shaft 42 to wind the lifting rope 43, the gravity hammer 44 can move upward. When the lifting motor 41 drives the central shaft 42 to unwind the lifting rope 43, the gravity hammer 44 loses the upward tension and falls freely. The gravity hammer 44 can then crack the large stones. The cracked stones can then enter the cone crushing mechanism 6 through the opening 51. When the main motor 64 is working, it can drive the left motor shaft 641 to rotate, thereby rotating the first driving bevel gear 67. The rotation of the first driving bevel gear 67 can drive the first driven bevel gear 66 to rotate, thereby rotating the main shaft 6. The rotation of shaft 65 drives the conical crusher body 63 to rotate. As the conical crusher body 63 rotates, the impact between it and the load-bearing layer 62 breaks the fractured stones. The broken stones then descend to the upper surface of the conical screen 72. While the main shaft 65 drives the upper conical crusher body 63 to rotate, it also drives the lower cam 77 to rotate. When the cam 77 rotates, its large-diameter end rotates along the inner cylinder 73 and continuously pushes the inner cylinder 73 in different directions, causing the conical screen 72 to move rapidly in various directions. (When the cam 77 pushes the conical screen 72, the auxiliary cylinder 75 also moves, pushing the steel trough 76.) 2. Furthermore, the auxiliary cylindrical part 75 will experience rolling friction with the roller 761. When the auxiliary cylindrical part 75 pushes the steel groove 762, the spring 763 will be in a compressed state. The guide rod 764 can guide the spring 763. When the entire limiting and guiding assembly 76 is running, it can limit and guide the auxiliary cylindrical part 75. Thus, the operation of the conical screen 72 is similar to vibration, which can achieve better screening of the conical screen 72. Screening can be achieved without an external vibrating screen, which saves costs. The stones that meet the size after being screened by the conical screen 72 reach the inside of the feeding mechanism 9 through the receiving hopper 11 and the first discharge pipe 12. The coarse material remaining on the conical screen 72 can move downward along the downward inclined hopper 74 and pass through the coarse material outlet. The material pipe 741 reaches the interior of the fine crushing mechanism 8. When the main motor 64 drives the right motor shaft 642 to rotate, the second driving bevel gear 132 can rotate, which in turn drives the second driven bevel gear 133 to rotate. When the second driven bevel gear 133 rotates, it can drive the vertical shaft 131 to rotate. When the vertical shaft 131 rotates, it can drive the worm gear 135 to rotate, which in turn drives the turbine gear 136 to rotate. When the turbine gear 136 rotates, it can cause one of the extrusion rollers 82 to rotate. Since the end gears 83 of the two extrusion rollers 82 mesh, the two extrusion rollers 82 rotate relative to each other. When they rotate relative to each other, they can crush the coarse stone to achieve fine crushing. The fine crushed stone can reach the interior of the feeding mechanism 9 through the second discharge pipe 14.

[0049] When the feeding motor 92 is working, it can make the auger 94 rotate. When the auger 94 rotates, the material inside the feeding cylinder 91 can be conveyed to the right and discharged from the discharge cylinder 95. The material can be received from the position below the platform 1 corresponding to the discharge cylinder 95.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A crushing equipment for highway bridge construction, comprising a cone crushing mechanism (6), the cone crushing mechanism (6) comprising a crushing chamber (61), a cone-shaped crushing body (63) disposed inside the crushing chamber (61), and a main shaft (65) fixed below the cone-shaped crushing body (63), wherein a rotating structure capable of driving the main shaft (65) to rotate is provided on one side below the crushing chamber (61), characterized in that: It also includes a screening mechanism (7), which includes a screening chamber (71) installed below the crushing chamber (61) and a conical screen (72) located inside the screening chamber (71). An inner cylinder (73) is installed inside the upper end of the conical screen (72). A cam (77) is provided inside the inner cylinder (73), and the cam (77) is fixedly connected to the lower end of the main shaft (65). A first roller (731) is evenly rotated and installed on the inner wall of the inner cylinder (73). An integral auxiliary cylindrical part (75) is provided on the lower circumference of the conical screen (72). Limiting guide components (76) are provided at four positions below the auxiliary cylindrical part (75) inside the screening chamber (71). (76) Includes a guide rod (764) that radiates from the outside of the screening chamber (71) and inserts into the inside of the screening chamber (71), a spring (763) sleeved on the guide rod (764), and a steel trough (762) installed at one end of the guide rod (764) located inside the screening chamber (71). The spring (763) is located inside the screening chamber (71). A limit plate (765) is installed at one end of the guide rod (764) located outside the screening chamber (71). A pair of rollers (761) are rotatably installed inside the steel trough (762) on the side near the auxiliary cylindrical part (75). A receiving hopper (11) is installed at the lower part of the screening chamber (71) corresponding to the position of the auxiliary cylindrical part (75). A feeder is provided in the middle of the upper surface of the platform (1). Structure (9), a first discharge pipe (12) is installed between the receiving hopper (11) and the feeding mechanism (9); a downward-inclined hopper (74) is installed on the lower circumference of the conical screen (72), a coarse material discharge pipe (741) extends from the lower side of the downward-inclined hopper (74), and a fine crushing mechanism (8) is installed above the platform (1) at a position corresponding to the lower end of the coarse material discharge pipe (741); the feeding mechanism (9) includes a feeding cylinder (91) horizontally arranged above the platform (1), an auger (94) rotatably installed inside the feeding cylinder (91), a feeding motor (92) for driving the auger (94) to rotate, and a support foot (93) for supporting the feeding cylinder (91), the feeding cylinder (91) being away from the feeding motor (92). One end of the feed cylinder (91) protrudes from the platform (1), and a feed cylinder (95) is provided below the end of the feed cylinder (91) protruding from the platform (1); the fine crushing mechanism (8) includes a fine crushing chamber (81), a support leg (84) connecting the fine crushing chamber (81) and the platform (1), a squeezing roller (82) installed side by side inside the fine crushing chamber (81), and a gear (83) fixedly inserted into one end of the squeezing roller (82). A second feed pipe (14) is connected between the bottom of the fine crushing chamber (81) and the feed cylinder (91). The main motor (64) is a dual-shaft motor, and a right motor shaft (642) is provided at the end of the dual-shaft motor away from the left motor shaft (641). A power transmission mechanism (13) is provided between one of the squeezing rollers (82) on the right motor shaft (642).The power transmission mechanism (13) includes a second driving bevel gear (132) fixed on the right motor shaft (642), a stabilizing frame (134) fixed on the side of the crushing chamber (61) near the main motor (64), a vertical shaft (131) rotatably mounted between the stabilizing frame (134) and the platform (1) via bearings, a second driven bevel gear (133) fixed on the vertical shaft (131 and capable of meshing with the second driving bevel gear (132), a worm gear (135) disposed at the lower part of the vertical shaft (131), and a turbine gear (136) fixed at one end of one of the extrusion rollers (82) and capable of meshing with the worm gear (135).

2. The crushing equipment for highway bridge construction according to claim 1, characterized in that: The screening chamber (71) is equipped with columns (10) on both sides below, and the lower end of the columns (10) is fixed to the upper surface of the platform (1).

3. The crushing equipment for highway bridge construction according to claim 1, characterized in that: A primary hammer chamber (5) is installed above the cone crusher (6). An opening (51) is provided on the lower end face of the primary hammer chamber (5). An auxiliary platform (2) is fixed on both sides of the crushing chamber (61). A bracket (3) is installed above the auxiliary platform (2). A hammer lifting structure (4) is provided between the two brackets (3). The hammer lifting structure (4) includes a central shaft (42) rotatably installed between the two brackets (3), a lifting rope (43) wound around the middle of the central shaft (42), and a gravity hammer (44) fixed at the lower end of the lifting rope (43). A lifting motor (41) for driving the central shaft (42) to rotate in both directions is installed inside one of the brackets (3).

4. The crushing equipment for highway bridge construction according to claim 1, characterized in that: A load-bearing layer (62) is fixedly connected to the inner wall of the crushing chamber (61). The rotating structure includes a first driven bevel gear (66) fixed to the upper end of the main shaft (65), a first driving bevel gear (67) meshing with one side of the first driven bevel gear (66), and a main motor (64) located on one side below the crushing chamber (61). The main motor (64) has a left motor shaft (641) at one end near the first driving bevel gear (67), and the left motor shaft (641) is fixedly connected to the first driving bevel gear (67).

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