Bridge building concrete crushing device

Abstract

The invention belongs to the technical field of crushing devices, and particularly discloses a bridge building concrete crushing device which comprises a box body, a crushing mechanism is fixedly arranged at the top of the box body and can crush bridge building concrete, a vibration mechanism is arranged outside the crushing mechanism, and the vibration mechanism is arranged on the top of the box body. A vibrating mechanism is arranged in the box body, the vibrating mechanism is used for knocking the outer part of the conveying mechanism to generate vibration, a screening mechanism is arranged in the box body, the screening mechanism is used for screening crushed concrete, a conveying mechanism is arranged outside the box body, and the conveying mechanism is used for conveying unqualified crushed concrete. Through cooperation of the smashing mechanism, the screening mechanism and the conveying mechanism, screening can be directly conducted after concrete is smashed, concrete particles which are not qualified after screening are conveyed into the smashing mechanism again through the conveying mechanism, the concrete smashing efficiency can be improved, purchase of devices is reduced, and the practicability is high. Therefore, the concrete crushing cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of crushing devices, and specifically discloses a bridge construction concrete crushing device. Background Art

[0002] In bridge construction, concrete crushing equipment is used to crush discarded concrete blocks or other construction waste. Its power unit is generally an energy-saving electric motor. This equipment is often used to recycle waste concrete, crushing it into reusable aggregate for new concrete production or other construction uses.

[0003] The concrete crushing device in the prior art can generally only perform one crushing operation. If the crushing is not thorough enough, the unqualified concrete particles need to be poured into the crushing device for crushing again. This not only increases the transportation time and reduces the crushing efficiency, but also the use of multiple devices increases the cost of purchasing the devices, further increasing the cost of crushing. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a bridge construction concrete crushing device to solve the problem that the existing concrete crushing device can only perform one crushing, resulting in reduced crushing efficiency and increased crushing cost.

[0005] To achieve the above objectives, the present invention provides a bridge construction concrete crushing device, comprising a box body, a crushing mechanism fixedly arranged on the top of the box body, the crushing mechanism capable of crushing bridge construction concrete, a vibration mechanism arranged on the outside of the crushing mechanism, the vibration mechanism being used to knock the outside of the transmission mechanism to generate vibration, a screening mechanism arranged on the inside of the box body, the screening mechanism being used to screen the crushed concrete, a transmission mechanism arranged on the outside of the box body, the transmission mechanism being used to transmit unqualified crushed concrete, and an energy-saving motor fixedly connected to the side of the outside of the box body away from the transmission mechanism, the energy-saving motor being used to provide power for the device.

[0006] In the above technical solution, preferably, the crushing mechanism includes a shell, the bottom of the shell is fixedly connected to the top of the box, the inner side of the shell is fixedly connected to a crushing plate, the inner bottom of the shell is fixedly connected to a crushing bottom plate, the inside of the shell is rotatably connected to a crushing roller, the outside of the crushing roller is fixedly connected to a plurality of crushing hammers, one end of the crushing roller is fixedly connected to a flywheel, and a belt is provided between the outside of the flywheel and the output end of the energy-saving motor.

[0007] In the above technical solution, preferably, the vibration mechanism includes a bent rod, the side of the bent rod close to the outer shell is fixedly connected to the side of the flywheel away from the outer shell, a reset spring is provided inside the bent rod, the inside of the bent rod is slidably connected to a sliding hexagonal plate, the bottom of the sliding hexagonal plate is fixedly connected to a sliding movable rod, and the bottom of the sliding movable rod is fixedly connected to a striking hammer.

[0008] In the above technical solution, preferably, the screening mechanism includes a screen frame, the outside of the screen frame is slidingly connected to the inside of the box, the inner and outer sides of the box are fixedly connected to guide pulleys, the top of the screen frame is fixedly connected to a pull rope, the outer top end of the bent rod is rotatably connected to a rotating ring, the top of the pull rope is fixedly connected to the outside of the rotating ring, the inner bottom end of the box is fixedly connected to a mounting cylinder, the inner sliding connection of the mounting cylinder is a limiting ring, the top of the limiting ring is fixedly connected to a sliding inner rod, an auxiliary tension spring is fixedly connected between the inner top end of the sliding inner rod and the inner bottom end of the mounting cylinder, the top of the sliding inner rod is fixedly connected to the bottom of the screen frame, and the outer top of the box is fixedly connected to a rope stabilizing sleeve.

[0009] In the above technical solution, preferably, the transmission mechanism includes a mounting shell, a transfer belt is provided inside the mounting shell, a plurality of material guide and transport plates are fixedly connected to the outside of the transfer belt, a discharge guide hopper is fixedly connected to the side of the external top end of the mounting shell close to the crushing mechanism, a feed inclined guide hopper is fixedly connected to the external bottom end of the mounting shell, two fixed mounting frames are fixedly connected to both sides of the mounting shell, and the fixed mounting frame is fixedly connected to the outside of the box body on the side away from the mounting shell.

[0010] In the above technical solution, preferably, one end of the return spring is fixedly connected to the inner top end of the bent rod, and the other end of the return spring is fixedly connected to the top of the sliding hexagonal plate.

[0011] In the above technical solution, preferably, the outside of the pull rope passes through the inner side of the rope stabilizing sleeve, and the outside of the sliding movable rod passes through the bottom of the bending rod.

[0012] In the above technical solution, preferably, the outside of the pull rope is in contact with the groove of the guide pulley, and a slag guide bucket is fixedly connected to the outside of the box body on one side close to the transmission mechanism.

[0013] In the above technical solution, preferably, the outer bottom end of the box body is rotatably connected to a material taking door, and the outside of the material taking door is fixedly connected to a handle.

[0014] In the above technical solution, preferably, the side of the discharge guide hopper away from the mounting shell is arranged inside the crushing mechanism, and the inside of the feed inclined guide hopper is arranged on the side of the slag discharge guide hopper away from the box body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention cooperates with the crushing mechanism, the screening mechanism and the transmission mechanism to directly screen the concrete after crushing, and transmits the unqualified concrete particles to the crushing mechanism again through the transmission mechanism, and then the unqualified concrete particles can be crushed again, thereby realizing the integration of crushing, screening and transmission, thereby reducing the transportation time, improving the efficiency of concrete crushing, and reducing the purchase of equipment, thereby reducing the cost of concrete crushing.

[0017] 2. The present invention uses a vibration mechanism to knock the fixed mounting frame when the concrete is crushed, thereby generating vibration and transmitting the vibration to the entire device, thereby shaking off the concrete powder attached to the inside of the device, thereby reducing the adhesion of concrete powder, preventing concrete from corroding the inner wall of the device, and extending the service life of the device, while also reducing the waste of concrete powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the crushing roller of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the sliding hexagonal plate of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the screen frame of the present invention;

[0022] Figure 5 Schematic diagram of the structure of the pull rope of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the installation tube of the present invention;

[0024] Figure 7 The present invention is a three-dimensional Figure 2 ;

[0025] Figure 8 It is a structural schematic diagram of the material guide and transport plate of the present invention.

[0026] In the figure: 1. Box; 2. Crushing mechanism; 201. Housing; 202. Crushing plate; 203. Crushing bottom plate; 204. Crushing roller; 205. Crushing hammer; 206. Flywheel; 3. Vibrating mechanism; 301. Bending rod; 302. Return spring; 303. Sliding hexagonal plate; 304. Sliding movable rod; 305. Striking hammer; 4. Screening mechanism; 401. Screen frame; 402. Guide pulley; 403. Pull rope; 404, rotating ring; 405, mounting cylinder; 406, limiting ring; 407, sliding inner rod; 408, auxiliary tension spring; 409, rope stabilizing sleeve; 410, slag discharge guide bucket; 5. Transmission mechanism; 501, mounting shell; 502, conveyor belt; 503, material guide and transport plate; 504, discharge guide bucket; 505, feed inclined guide bucket; 506, fixed mounting frame; 6. Energy-saving motor; 7. Reclaiming door. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figures 1-8 The bridge construction concrete crushing device shown includes a box body 1, a crushing mechanism 2 is fixedly arranged on the top of the box body 1, and the crushing mechanism 2 can crush the bridge construction concrete. The outside of the crushing mechanism 2 is provided with a vibrating mechanism 3, and the vibrating mechanism 3 is used to knock the outside of the transmission mechanism 5 to generate vibration. The inside of the box body 1 is provided with a screening mechanism 4, and the screening mechanism 4 is used to screen the crushed concrete. The outside of the box body 1 is provided with a transmission mechanism 5, and the transmission mechanism 5 is used to transmit unqualified crushed concrete. The side of the outside of the box body 1 away from the transmission mechanism 5 is fixedly connected to an energy-saving motor 6, and the energy-saving motor 6 is used to provide power for the device. The bottom end of the outside of the box body 1 is rotatably connected to a material taking door 7, and the outside of the material taking door 7 is fixedly connected to a handle. The handle facilitates the rotation and opening of the material taking door 7 and facilitates the removal of the crushed concrete from the inside of the box body 1. The use of the energy-saving motor 6 can achieve energy saving of the device.

[0030] The crushing mechanism 2 includes a shell 201, the bottom of which is fixedly connected to the top of the box body 1. The shell 201 provides an installation position and a position for crushing concrete. A crushing plate 202 is fixedly connected to the inner side of the shell 201, and a crushing bottom plate 203 is fixedly connected to the inner bottom of the shell 201. A crushing roller 204 is rotatably connected to the inside of the shell 201, and a plurality of crushing hammers 205 are fixedly connected to the outside of the crushing roller 204. The crushing roller 204 drives the crushing hammers 205 to rotate and then cooperates with the crushing plate 202 and the crushing bottom plate 203 to crush the bridge construction concrete. One end of the crushing roller 204 is fixedly connected to a flywheel 206. The flywheel 206 It can drive the crushing roller 204 to rotate, and a belt is provided between the outside of the flywheel 206 and the output end of the energy-saving motor 6. When the bridge construction concrete is crushed, the concrete is first placed inside the shell 201, and the energy-saving motor 6 is started at this time. The output end of the energy-saving motor 6 rotates and drives the flywheel 206 to rotate through the belt. After the flywheel 206 rotates, it drives the crushing roller 204 to rotate. After the crushing roller 204 rotates, it can drive the crushing hammer 205 to rotate, so that the concrete can be crushed by utilizing the crushing roller 204, the crushing hammer 205, the crushing plate 202 and the crushing bottom plate 203.

[0031] The vibration mechanism 3 includes a bent rod 301, which can provide an installation position. The side of the bent rod 301 close to the housing 201 is fixedly connected to the side of the flywheel 206 away from the housing 201. A return spring 302 is provided inside the bent rod 301. The inside of the bent rod 301 is slidably connected to a sliding hexagonal plate 303. The sliding hexagonal plate 303 has a limiting function. The bottom of the sliding hexagonal plate 303 is fixedly connected to a sliding movable rod 304. The sliding movable rod 304 can slide at the bottom of the bent rod 301. The bottom of the sliding movable rod 304 is fixedly connected to a knocking circle. The hammer 305 can strike the transmission mechanism 5, thereby generating vibration, so that the concrete attached to the box body 1, the shell 201 and the inner wall of the transmission mechanism 5 falls off, and the power of striking the hammer 305 is related to the elastic coefficient of the return spring 302. The greater the elastic coefficient of the return spring 302, the less likely the hammer 305 is to bend the inside of the rod 301. Therefore, the power of the hammer 305 striking the transmission mechanism 5 is greater. On the contrary, the smaller the elastic coefficient of the return spring 302, the smaller the power of striking the transmission mechanism 5, thereby preventing concrete from adhering to the inner wall of the device, thereby preventing The concrete corrosion device that prevents adhesion to the inner wall of the device, one end of the return spring 302 is fixedly connected to the inner top of the bent rod 301, and the other end of the return spring 302 is fixedly connected to the top of the sliding hexagonal plate 303. When the flywheel 206 rotates, it can drive the bent rod 301 to rotate. After the bent rod 301 rotates, it drives the sliding hexagonal plate 303, the sliding movable rod 304 and the knocking hammer 305 to rotate. When the knocking hammer 305 contacts the outside of the transmission mechanism 5, it can generate vibration, and at the same time, it can force the knocking hammer 305 to be knocked under the pressure of the transmission mechanism 5. The hammer 305 moves toward the direction of the curved rod 301, and then drives the sliding movable rod 304 and the sliding hexagonal plate 303 to move toward the inside of the curved rod 301. At this time, the sliding hexagonal plate 303 is squeezed by the reset spring 302, forcing the reset spring 302 to compress. When the hammer 305 leaves the outside of the transmission mechanism 5, the reaction force of the reset spring 302 can push the sliding hexagonal plate 303 to move toward the outside of the curved rod 301, and then drives the sliding movable rod 304 and the hammer 305 to move to the outside of the curved rod 301 and reset.

[0032] The screening mechanism 4 includes a screen frame 401, which can screen the concrete and allow the concrete with the appropriate particle size to fall out of the screen frame 401. The particles that are too large will slide into the interior of the transmission mechanism 5 through the inclined surface of the screen frame 401 and then be transported by the transmission mechanism 5 to the interior of the crushing mechanism 2 for re-crushing. The outside of the screen frame 401 is slidably connected to the inside of the box body 1. The inside and outside of the box body 1 are fixedly connected with a guide pulley 402. The top of the screen frame 401 is fixedly connected with a pull rope 403. The guide pulley 402 can reduce the wear of the pull rope 403 and reduce the friction when the pull rope 403 is pulled up. The external top of the curved rod 301 is rotatably connected with a rotating ring 404. The rotating ring 404 rotates on the outside of the curved rod 301. 01 When rotating, the pull rope 403 will not be entangled on the bent rod 301. The top of the pull rope 403 is fixedly connected to the outside of the rotating ring 404. The inner bottom end of the box body 1 is fixedly connected to the mounting cylinder 405. The inner sliding connection of the mounting cylinder 405 is a limiting ring 406. The limiting ring 406 has a limiting function. The top of the limiting ring 406 is fixedly connected to the sliding inner rod 407. The sliding inner rod 407 slides inside the mounting cylinder 405. Therefore, when the screen frame 401 moves upward, the cooperation between the sliding inner rod 407 and the mounting cylinder 405 can be used to increase the stability of the screen frame 401 during movement. An auxiliary tension spring 408 is fixedly connected between the inner top of the sliding inner rod 407 and the inner bottom end of the mounting cylinder 405. The top of the sliding inner rod 407 is fixedly connected to the screen frame At the bottom of 401, the auxiliary tension spring 408 can provide tension, which can provide a downward pulling force when the screen frame 401 falls, preventing the concrete powder attached to the inner wall of the box body 1 from blocking the sliding of the screen frame 401, and the top of the outer periphery of the box body 1 is fixedly connected with a stabilizing rope sleeve 409, which can prevent the pull rope 403 from deviating from the groove of the guide pulley 402. The outside of the pull rope 403 passes through the inner side of the stabilizing rope sleeve 409, and the outside of the sliding movable rod 304 passes through the bottom of the bent rod 301. The outside of the pull rope 403 contacts the groove of the guide pulley 402. The outside of the box body 1 is fixedly connected to a slag guide bucket 410 near the transmission mechanism 5. When the flywheel 206 rotates, it can drive the bent rod 301 to rotate, thereby driving the rotating ring 4 04 rotates around the flywheel 206. When the bent rod 301 rotates upward, the pull rope 403 can be pulled to move upward, and then the screen frame 401 can be pulled upward, and then the sliding inner rod 407 can be pulled out of the interior of the installation cylinder 405, and the auxiliary tension spring 408 can be stretched. When the flywheel 206 moves downward, the pull rope 403 no longer pulls the screen frame 401, and moves downward under the action of gravity and the tension of the auxiliary tension spring 408, thereby driving the screen frame 401 to move downward, realizing the up-and-down screening of the crushed concrete by the screen frame 401, and the unqualified concrete will remain in the screen frame 401, and when the interior of the screen frame 401 moves to the position of the slag guide bucket 410, since the bottom of the screen frame 401 is an inclined surface,Therefore, the concrete inside the screen frame 401 will slide out through the slag guide 410.

[0033] The transmission mechanism 5 includes an installation shell 501, a conveyor belt 502 is provided inside the installation shell 501, the installation shell 501 provides an installation position, a plurality of guide and transport plates 503 are fixedly connected to the outside of the conveyor belt 502, a discharge guide hopper 504 is fixedly connected to the side of the external top of the installation shell 501 close to the crushing mechanism 2, the guide and transport plates 503 can rotate with the conveyor belt 502, so as to transport the concrete to the discharge guide hopper 504, the external bottom end of the installation shell 501 is fixedly connected to a feed inclined guide hopper 505, the feed inclined guide hopper 505 can introduce concrete powder into the interior of the installation shell 501, and two fixed mounting frames 506 are fixedly connected to both sides of the installation shell 501, and the fixed mounting frames 506 can play the role of installing the fixed installation shell 501, and the mounting frames 506 can A striking position for the striking hammer 305 is provided, and the fixed mounting frame 506 is fixedly connected to the outside of the box body 1 on the side away from the mounting shell 501, and the discharge guide hopper 504 is arranged inside the crushing mechanism 2 on the side away from the mounting shell 501. The interior of the feed inclined guide hopper 505 is arranged on the side of the slag discharge guide hopper 410 away from the box body 1. The unqualified concrete will slide into the interior of the feed inclined guide hopper 505 through the slag discharge guide hopper 410, and slide into the interior of the mounting shell 501 through the feed inclined guide hopper 505, and start the conveyor belt 502. After the conveyor belt 502 rotates, it can drive the material guide transport plate 503 to rotate, thereby driving the crushed concrete to slide out through the discharge guide hopper 504, and then the unqualified concrete can be transported to the interior of the outer shell 201 again for re-crushing until the concrete is crushed to be qualified.

[0034] Working principle: When the concrete of a bridge construction is to be crushed, the concrete is first placed inside the housing 201, and then the energy-saving motor 6 is started. The output end of the energy-saving motor 6 rotates, and the flywheel 206 is driven to rotate via a belt. The rotation of the flywheel 206 drives the crushing roller 204 to rotate, and the rotation of the crushing roller 204 drives the crushing hammer 205 to rotate, so that the concrete can be crushed by the cooperation of the crushing roller 204, the crushing hammer 205, the crushing plate 202, and the crushing bottom plate 203;

[0035] When the flywheel 206 rotates, it can drive the curved rod 301 to rotate. After the curved rod 301 rotates, it drives the sliding hexagonal plate 303, the sliding movable rod 304 and the knocking hammer 305 to rotate. When the knocking hammer 305 contacts the outside of the transmission mechanism 5, it can generate vibration. At the same time, under the extrusion of the transmission mechanism 5, the knocking hammer 305 can be forced to move in the direction of the curved rod 301, and then it can drive the sliding movable rod 304 and the sliding hexagonal plate 303 to move toward the inside of the curved rod 301. At this time, the sliding hexagonal plate 303 is used to squeeze the return spring 302, forcing the return spring 302 to compress. When the knocking hammer 305 leaves the outside of the transmission mechanism 5, under the reaction force of the return spring 302, the sliding hexagonal plate 303 can be pushed to move toward the outside of the curved rod 301, and then the sliding movable rod 304 and the knocking hammer 305 can be driven to move and reset to the outside of the curved rod 301.

[0036] When the flywheel 206 rotates, it can drive the curved rod 301 to rotate, thereby driving the rotating ring 404 to rotate around the flywheel 206. When the curved rod 301 rotates upward, it can pull the pull rope 403 to move upward, and then the screen frame 401 can be pulled upward, and then the sliding inner rod 407 can be pulled out of the interior of the mounting cylinder 405, and the auxiliary tension spring 408 can be stretched. When the flywheel 206 moves downward, the pull rope 403 no longer pulls the screen frame 401, and moves downward under the action of gravity and the tension of the auxiliary tension spring 408, thereby driving the screen frame 401 to move downward, realizing the up-and-down screening of the crushed concrete by the screen frame 401, and unqualified concrete will remain in the screen frame 401, and when the interior of the screen frame 401 moves to the position of the slag guide bucket 410, since the bottom of the screen frame 401 is an inclined surface, the concrete inside the screen frame 401 will slide out through the slag guide bucket 410;

[0037] The unqualified concrete will slide into the interior of the feed inclined guide hopper 505 through the slag discharge guide hopper 410, and then slide into the interior of the installation shell 501 through the feed inclined guide hopper 505. The conveyor belt 502 is started, and after the conveyor belt 502 rotates, it can drive the guide transport plate 503 to rotate, thereby driving the crushed concrete to slide out through the discharge guide hopper 504, and then the unqualified concrete can be transported to the interior of the outer shell 201 again for re-crushing until the concrete is crushed to the standard.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge construction concrete crushing device, comprising a box (1), characterized in that: A crushing mechanism (2) is fixedly provided on the top of the box (1), and the crushing mechanism (2) is capable of crushing bridge construction concrete. A vibration mechanism (3) is provided on the outside of the crushing mechanism (2), and the vibration mechanism (3) is used to knock the outside of the transmission mechanism (5) to generate vibration. A screening mechanism (4) is provided on the inside of the box (1), and the screening mechanism (4) is used to screen the crushed concrete. A transmission mechanism (5) is provided on the outside of the box (1), and the transmission mechanism (5) is used to transmit unqualified crushed concrete. An energy-saving motor (6) is fixedly connected to the side of the outside of the box (1) away from the transmission mechanism (5), and the energy-saving motor (6) is used to provide power for the device.

2. A bridge construction concrete crushing device according to claim 1, characterized in that: The pulverizing mechanism (2) comprises a shell (201), the bottom of the shell (201) is fixedly connected to the top of the box (1), a pulverizing plate (202) is fixedly connected to the inner side of the shell (201), a pulverizing bottom plate (203) is fixedly connected to the inner bottom of the shell (201), a pulverizing roller (204) is rotatably connected to the inside of the shell (201), a plurality of pulverizing hammers (205) are fixedly connected to the outside of the pulverizing roller (204), one end of the pulverizing roller (204) is fixedly connected to a flywheel (206), and a belt is sleeved between the outside of the flywheel (206) and the output end of the energy-saving motor (6).

3. A bridge construction concrete crushing device according to claim 2, characterized in that: The vibration mechanism (3) comprises a bent rod (301), wherein a side of the bent rod (301) close to the housing (201) is fixedly connected to a side of the flywheel (206) away from the housing (201), a return spring (302) is provided inside the bent rod (301), a sliding hexagonal plate (303) is slidably connected inside the bent rod (301), a sliding movable rod (304) is fixedly connected to the bottom of the sliding movable rod (304), and a striking hammer (305) is fixedly connected to the bottom of the sliding movable rod (304).

4. A bridge construction concrete crushing device according to claim 3, characterized in that: The screening mechanism (4) comprises a screen frame (401), the outside of the screen frame (401) is slidably connected to the inside of the box (1), the inner and outer sides of the box (1) are fixedly connected to guide pulleys (402), the top of the screen frame (401) is fixedly connected to a pull rope (403), the outer top end of the curved rod (301) is rotatably connected to a rotating ring (404), the top of the pull rope (403) is fixedly connected to the outside of the rotating ring (404), the inner bottom end of the box (1) is fixedly connected to a mounting cylinder (405), and the mounting cylinder (406) is fixedly connected to the outer bottom end of the box (1). The internal sliding connection of the mounting cylinder (405) is connected to a limiting ring (406), the top of the limiting ring (406) is fixedly connected to a sliding inner rod (407), an auxiliary tension spring (408) is fixedly connected between the internal top end of the sliding inner rod (407) and the internal bottom end of the mounting cylinder (405), the top of the sliding inner rod (407) is fixedly connected to the bottom of the screen frame (401), the outer top of the box body (1) is fixedly connected to a stabilizing rope sleeve (409), and the outside of the pull rope (403) passes through the inner side of the stabilizing rope sleeve (409).

5. The bridge construction concrete crushing device according to claim 1, characterized in that: The transmission mechanism (5) comprises a mounting shell (501), a conveyor belt (502) is provided inside the mounting shell (501), a plurality of guide and transport plates (503) are fixedly connected to the outside of the conveyor belt (502), a discharge guide hopper (504) is fixedly connected to the top end of the mounting shell (501) on the side close to the crushing mechanism (2), a feed inclined guide hopper (505) is fixedly connected to the bottom end of the mounting shell (501), two fixed mounting frames (506) are fixedly connected to both sides of the mounting shell (501), and the fixed mounting frames (506) are fixedly connected to the outside of the box (1) on the side away from the mounting shell (501).

6. The bridge construction concrete crushing device according to claim 3, characterized in that: One end of the return spring (302) is fixedly connected to the inner top end of the bent rod (301), and the other end of the return spring (302) is fixedly connected to the top of the sliding hexagonal plate (303).

7. The bridge construction concrete crushing device according to claim 4, characterized in that: The outside of the pull rope (403) passes through the inner side of the rope-stabilizing sleeve (409), and the outside of the sliding movable rod (304) passes through the bottom of the bending rod (301).

8. The bridge construction concrete crushing device according to claim 4, characterized in that: The outside of the pull rope (403) contacts the groove of the guide pulley (402), and a slag guide bucket (410) is fixedly connected to the outside of the box (1) on a side close to the transmission mechanism (5).

9. The bridge construction concrete crushing device according to claim 1, characterized in that: The outer bottom end of the box body (1) is rotatably connected to a material taking door (7), and the outer portion of the material taking door (7) is fixedly connected to a handle.

10. The bridge construction concrete crushing device according to claim 5, characterized in that: The side of the discharge guide hopper (504) away from the mounting shell (501) is arranged inside the crushing mechanism (2), and the inside of the feed inclined guide hopper (505) is arranged on the side of the slag discharge guide hopper (410) away from the box body (1).

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