Road and bridge construction roadbed breaking device

Abstract

The utility model provides a kind of road bridge construction roadbed crushing device, including rack, speed reducer, pulverizer, the inside fixed connection of rack has speed reducer, the top fixed connection of rack has pulverizer;The inside movable connection of pulverizer has two main shafts, the outer surface fixed connection of main shaft has a plurality of crushing teeths.The utility model has the advantages that: in the inside edge of bin mouth, a rotating shaft is movably connected, the rotating shaft is linked with the handle outside, when rotating handle, rotating shaft rotates, the midpoint of rotating shaft, both ends are fixedly connected with the swing arm towards the inside of pulverizer, swing handle, stretch spring stretches, swing arm lifts, so that material more concentratedly enters the most effective crushing area, i.e. the center of pulverizer, reduce the probability of invalid rolling and being stuck in edge, corner, while operating, use handle outside pulverizer, without directly using hand or tool to stretch into dangerous area. Greatly improve safety.

Description

Technical Field

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

[0002] During road and bridge construction, the demolition, reconstruction, or repair of old roadbeds often generates a large number of large-sized concrete or asphalt fragments. These materials often need to be crushed to facilitate transportation, recycling, or use as roadbed filling materials. Although traditional crushing equipment such as jaw crushers and hammer crushers are widely used in mining and construction waste treatment, they still have significant shortcomings when dealing with the specific working conditions at road construction sites.

[0003] Most common crushing devices currently employ a dual-shaft rotary crushing structure. A motor drives meshing gears to rotate the main shaft, and crushing teeth on the shaft surface achieve shearing and compression crushing of the material. However, in practical applications, such equipment often faces the following problems: Feeding jamming and uneven distribution: Large roadbed fragments are irregular in shape and have a large mass. When fed through the feed inlet, they tend to accumulate at the edge or corner of the crushing chamber, making it difficult for them to quickly enter the effective crushing area between the two shafts. Some material only rolls on the outside of the crushing teeth, resulting in reduced crushing efficiency, increased energy consumption, and even accelerated equipment wear due to long-term unbalanced loading.

[0004] High risk of manual intervention: When material jamming or blockage occurs, operators often need to manually push or stir the material using tools such as iron rods. This operation requires personnel to be close to or even lean over the feed inlet, while the mechanical components inside the crushing chamber rotate at high speed during equipment operation, posing a serious safety hazard and easily leading to work-related injuries. Therefore, a roadbed crushing device for road and bridge construction is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to propose a roadbed breaking device for road and bridge construction, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0007] To achieve the above objectives, one embodiment of the present invention provides a roadbed crushing device for road and bridge construction, including a frame, a geared motor, and a crusher. The geared motor is fixedly connected to the inner side of the frame, and the crusher is fixedly connected to the top of the frame. The inner side of the crusher is movably connected to two main shafts, and the outer surface of the main shafts is fixedly connected to several crushing teeth. Several baffles are fixedly connected to the inner side of the crusher, and the baffles are movably connected to the crushing teeth; A gear is fixedly connected to the outer end of the main shaft, and a pulley is fixedly connected to the output end of the geared motor. A belt is movably connected to the outer surface of the pulley, and another pulley is movably connected to the inner side of the belt. This pulley is linked with a gear, and the gears are movably connected to each other. The crusher is fixedly connected to the top of a hopper, and a rotating shaft is movably connected to the inner edge of the hopper. A handle is fixedly connected to the outer end of the rotating shaft. The middle section and both ends of the rotating shaft are fixedly connected to swing arms, which are bent and the ends of the swing arms face the middle surface of the crusher. The pulverizer is movably connected to both sides by a rotating joint, and a tension spring is fixedly connected between the rotating joint and the handle.

[0008] Preferably, in any of the above embodiments, the geared motor is installed horizontally, and the crusher is connected to the frame via a flange alignment.

[0009] The above technical solution is adopted: This device is specially used for further crushing of large-sized roadbed fragments. The basic working principle is that the geared motor is powered to provide power, the pulley rotates, and drives another pulley to rotate through the belt, thereby driving the main shaft to rotate. The main shaft drives another main shaft to rotate through the gear. Large-sized roadbed fragments are put into the bin, and under the action of the crushing teeth, the roadbed fragments are squeezed and crushed to form small-sized roadbed fragments that are output from the bottom of the crusher.

[0010] Preferably, in any of the above embodiments, the belt on the outer surface of the pulley is multiple, and the hopper opening is funnel-shaped.

[0011] The core structure of this device, employing the above technical solution, consists of a rotating shaft, a handle, a swing arm, a pivot, and a tension spring. A rotating shaft is movably connected to the inner edge of the hopper opening. This shaft is linked to an external handle. Rotating the handle causes the shaft to rotate. Swing arms, fixed at the midpoint and both ends of the shaft and facing inwards towards the crusher, are also connected. Cranking the handle upwards stretches the tension spring, raising the swing arms and allowing the material to concentrate in the most effective crushing area—the center of the crusher. This reduces the probability of ineffective rolling at the edges and getting stuck at edges or corners. Furthermore, the handle is used externally during operation, eliminating the need to directly reach into dangerous areas with hands or tools, significantly improving safety.

[0012] Preferably, in any of the above solutions, the rotating shaft is linked to the handle, and the root of the swing arm is riveted to the rotating shaft.

[0013] The above technical solution employs the following main structure: The device comprises a frame, a geared motor, and a crusher. The geared motor is horizontally fixed inside the frame, and the crusher is connected to the top of the frame via a flange structure. The crusher contains two parallel main shafts, each with a uniformly distributed crushing tooth surface. The tooth spacing is adjustable to accommodate different particle sizes. Multiple sets of baffles are welded to the inner wall of the crusher, maintaining a dynamic gap between the baffles and the tips of the crushing teeth to prevent material splashing.

[0014] Transmission system: The outer end of the spindle is keyed to a gear, and the two gears mesh with each other to achieve the opposite rotation of the spindle.

[0015] The output of the geared motor drives a pulley, which in turn links another pulley via multiple belts (corresponding to the claims). This pulley is coaxially fixed with any gear, thereby transmitting motor power.

[0016] Anti-jamming safety mechanism: The crusher has a funnel-shaped opening at the top for feeding roadbed debris. A rotating shaft is hinged to the edge of the opening, and a handle is fixed to the outer end of the shaft for external operation. Stainless steel swing arms are riveted to the midpoint and both ends of the shaft. The swing arms are bent at an obtuse angle, with the bent ends naturally drooping towards the center of the crusher. A spring steel tension spring connects the side wall of the crusher to the handle, keeping the swing arms in a horizontal position under normal conditions.

[0017] Preferably, the material of the swing arm is stainless steel, and the bending angle of the swing arm is an obtuse angle.

[0018] Preferably, the tension spring is made of spring steel, as described in any of the above embodiments.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: This road and bridge construction subgrade crushing device, through the coordinated arrangement of a rotating shaft, handle, swing arm, pivot, and tension spring, features a rotating shaft movably connected to the inner edge of the hopper opening. This shaft is linked to an external handle; rotating the handle causes the shaft to rotate, with swing arms fixedly connected to its midpoint and both ends, facing inwards towards the crusher. Cranking the handle upwards stretches the tension spring, raising the swing arms and concentrating the material more effectively into the crushing zone—the center of the crusher. This reduces the probability of ineffective rolling at the edges and getting stuck in corners. Furthermore, the handle is used externally during operation, eliminating the need to directly reach into dangerous areas with hands or tools, significantly improving safety.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a structural schematic diagram of the present invention from a second perspective; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the pulverizer in this utility model.

[0022] In the diagram: 1-Frame, 2-Gear motor, 3-Crusher, 4-Main shaft, 5-Crushing teeth, 6-Baffle, 7-Gear, 8-Pulley, 9-Belt, 10-Blouse opening, 11-Rotating shaft, 12-Handle, 13-Swing arm, 14-Rotating joint, 15-Tension spring. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figure 1-5 As shown, the roadbed crushing device for road and bridge construction includes a frame 1, a reduction motor 2, and a crusher 3. The reduction motor 2 is fixedly connected to the inner side of the frame 1, and the crusher 3 is fixedly connected to the top of the frame 1. Two main shafts 4 are movably connected to the inner side of the crusher 3, and several crushing teeth 5 are fixedly connected to the outer surface of the main shafts 4; Several baffles 6 are fixedly connected to the inner side of the crusher 3, and the baffles 6 are movably connected to the crushing teeth 5; A gear 7 is fixedly connected to the outer end of the main shaft 4, and a pulley 8 is fixedly connected to the output end of the geared motor 2. A belt 9 is movably connected to the outer surface of the pulley 8, and another pulley 8 is movably connected to the inner side of the belt 9. This pulley 8 is linked with a gear 7, and the gears 7 are movably connected to each other. A hopper 10 is fixedly connected to the top of the crusher 3. A rotating shaft 11 is movably connected to the inner edge of the hopper 10. A handle 12 is fixedly connected to the outer end of the rotating shaft 11. A swing arm 13 is fixedly connected to the middle section and both ends of the rotating shaft 11. The swing arm 13 is bent and the end of the swing arm 13 faces the middle surface of the crusher 3. The crusher 3 is movably connected to both sides of the rotating joint 14, and a tension spring 15 is fixedly connected between the rotating joint 14 and the handle 12.

[0026] Example 1: The geared motor 2 is horizontally mounted, and the crusher 3 is connected to the frame 1 via a flange. The pulley 8 has multiple belts 9 on its outer surface, and the hopper opening 10 is funnel-shaped. The rotating shaft 11 is linked to the handle 12, and the base of the swing arm 13 is riveted to the rotating shaft 11. The swing arm 13 is made of stainless steel, and its bending angle is obtuse. The tension spring 15 is made of spring steel.

[0027] Example 2: This device is specifically designed for further crushing of large roadbed fragments. The basic working principle is as follows: the geared motor 2 is powered to provide power, the pulley 8 rotates, and through the belt 9 drives another pulley 8 to rotate, thereby driving the main shaft 4 to rotate. The main shaft 4 drives another main shaft 4 to rotate through the gear 7. Large roadbed fragments are fed into the bin 10. Under the action of the crushing teeth 5, the roadbed fragments are crushed and squeezed, forming small roadbed fragments that are output from below the crusher 3.

[0028] Main structure: The device includes a frame 1, a geared motor 2, and a crusher 3. The geared motor 2 is horizontally fixed inside the frame 1, and the crusher 3 is connected to the top of the frame 1 via a flange structure. The crusher 3 contains two parallel main shafts 4, with several crushing teeth 5 evenly distributed on their surfaces. The tooth gap is adjustable to accommodate different particle sizes. Multiple sets of baffles 6 are welded to the inner wall of the crusher 3. The baffles 6 maintain a dynamic gap with the tips of the crushing teeth 5 to prevent material splashing.

[0029] Transmission system: The outer end of the main shaft 4 is keyed to the gear 7, and the two gears 7 mesh with each other to realize the opposite rotation of the main shaft 4.

[0030] The output of the geared motor 2 drives the pulley 8, which in turn drives another pulley 8 through multiple belts 9. This pulley is coaxially fixed with any gear 7, thus realizing the transmission of motor power.

[0031] Anti-jamming safety mechanism: The crusher 3 has a funnel-shaped opening 10 at the top for feeding roadbed debris. A rotating shaft 11 is hinged to the edge of the opening 10, and a handle 12 is fixed to the outer end of the shaft 11 for external operation. Stainless steel swing arms 13 are riveted to the midpoint and both ends of the shaft 11. The swing arms 13 are bent at an obtuse angle, with the bent ends naturally drooping towards the center of the crusher 3. A spring steel tension spring 15 connects the side wall of the crusher 3 to the handle 12, keeping the swing arms 13 in a horizontal position under normal conditions.

[0032] The working principle of this utility model is as follows: Crushing process: After the geared motor 2 is powered on, it drives the gear 7 through the pulley 8 and belt 9, so that the two main shafts 4 carry the crushing teeth 5 and rotate in opposite directions.

[0033] Large roadbed fragments are fed into the hopper 10 and crushed by the squeezing and shearing action of the crushing teeth 5, while small particles are output from the bottom of the crusher 3.

[0034] Anti-jamming and safety control: When material accumulates at the edge of the crusher 3, the operator raises the handle 12 externally, the rotating shaft 11 drives the swing arm 13 to flip up about 30°-45°, and the tension spring 15 extends synchronously.

[0035] The bent end of the swing arm 13 pushes the edge material toward the center of the crushing zone, preventing it from getting stuck in the corner.

[0036] After releasing handle 12, tension spring 15 returns to its original position, causing swing arm 13 to return to the horizontal standby position.

[0037] Compared with the prior art, the present invention has the following advantages: This road and bridge construction subgrade crushing device, through the coordinated arrangement of a rotating shaft 11, a handle 12, a swing arm 13, a pivot 14, and a tension spring 15, features a rotating shaft 11 movably connected to the inner edge of the hopper 10. The rotating shaft 11 is linked to the external handle 12. Rotating the handle 12 causes the rotating shaft 11 to rotate. The swing arm 13, with its midpoint and two ends fixedly connected to the rotating shaft 11, faces inwards towards the crusher 3. Cranking the handle 12 upwards stretches the tension spring 15, raising the swing arm 13 and allowing material to more concentratedly enter the most effective crushing area—the center of the crusher 3. This reduces the probability of ineffective rolling at the edges and getting stuck at edges and corners. Furthermore, the handle 12 is used from outside the crusher 3 during operation, eliminating the need to directly reach into dangerous areas with hands or tools, significantly improving safety.

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