Crusher for engineering construction

Abstract

The invention relates to the technical field of crushers, in particular to an engineering construction crusher which comprises a shell, a support, an annular part, a driving part, a crushing part, a limiting part and a force storage part. According to the crusher for engineering construction, in the rotating process of the annular plate, the supporting plate drives the limiting plate to synchronously rotate, the first sliding rail on the limiting plate is matched with the supporting shaft, and the supporting shaft is guided to slide along the track of the second sliding rail on the annular plate; the supporting shaft gradually slides from the bottom end of the arc-shaped groove to the top end of the arc-shaped groove, the smashing block is driven by the supporting shaft to slowly ascend to the top end from the bottom end in the annular plate, relative movement between the smashing block and a smashed object is continuously changed along with ascending of the smashing block, and the smashed object is preliminarily extruded and smashed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crushers, in particular to a crusher for engineering construction. BACKGROUND

[0002] With the vigorous development of social economy, the urbanization process in China is accelerating, and various infrastructure construction is in full swing. From the high-rise buildings in bustling cities to the magnificent bridges across rivers and mountains, to the crisscrossing high-speed railway network, each project is accompanied by a large amount of construction waste. These wastes not only occupy valuable land resources, but also pose a potential pollution risk to the surrounding environment. How to efficiently and environmentally handle these construction wastes has become an important problem to be solved.

[0003] In order to effectively solve the environmental problems caused by construction waste and realize the recycling of resources, it is particularly important to scientifically and reasonably remove and dispose of the construction waste. In this process, the crusher, as a key mechanical equipment, plays an indispensable role. The crusher can break the hard and large construction waste into smaller particles through powerful mechanical force, creating conditions for subsequent processing and recycling. For example, the waste cement blocks after crushing can be used as recycled raw materials for building materials to produce new concrete, road base materials, etc., thereby realizing the transformation of construction waste into treasure, reducing the overexploitation of natural resources, and reducing the pressure on the environment caused by waste landfill.

[0004] In the actual construction waste disposal process, some crushers are equipped with a screen mesh, an important component, for screening the crushed stone. When the stone is fully crushed in the crusher, it will be transported to the screen mesh as the equipment operates. The size of some stones may be close to the size of the screen hole. When these stones fall on the screen mesh, they may be stuck in the screen hole. As the number of stuck stones increases, the screen hole will be completely blocked. The blocked screen hole will affect the normal screening of the stone, resulting in reduced screening efficiency. Small particle stones that should have passed through the screen hole smoothly cannot fall in time, and large particle stones may not be properly separated due to the blocked screen surface.

[0005] Therefore, the present application provides a crusher for engineering construction to solve the above problems. SUMMARY

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present application provides a crusher for engineering construction to solve the problem of the blocked screen hole affecting the normal screening of the stone, resulting in reduced screening efficiency, and the small particle stones that should have passed through the screen hole smoothly cannot fall in time, and the large particle stones may not be properly separated due to the blocked screen surface.

[0007] To achieve the above object, the technical scheme adopted by the present application is: A crusher for engineering construction, comprising a shell, a feeding port is formed on one side of the shell, and a feeding hopper is installed on the outer wall of the feeding port, the crushed material can enter the inside of the shell through the feeding hopper for crushing, a discharge port is installed at the bottom end of the shell, the crushed material entering the inside of the shell can be discharged through the discharge port, a support is installed outside the shell for supporting the shell; A filtering mechanism is arranged inside the shell, the filtering mechanism comprises a ring-shaped part and a driving part, and the driving part is used to drive the ring-shaped part to screen the crushed material; A crushing structure is arranged inside the shell, the crushing structure comprises a crushing part, a limiting part and a force storage part, the limiting part drives the crushing part to crush the crushed material, and the force storage part is used to improve the crushing degree of the crushing part on the crushed material.

[0008] Preferably, the ring-shaped part comprises a ring-shaped plate, which is arranged transversely inside the shell, the inside of the ring-shaped plate has a crushing cavity, the crushed material can enter the inside of the crushing cavity through the feeding hopper for crushing, a discharge port is formed on the outer surface of the ring-shaped plate, the crushed material after crushing can be discharged through the discharge port, a filtering part is installed outside the discharge port for screening the material discharged through the discharge port.

[0009] Preferably, the filtering part comprises a mounting plate and a filter screen, and the filter screen is installed inside the mounting plate for screening the crushed material, and the mounting plate is installed on the outer ring surface of the ring-shaped plate through bolts for easy disassembly and assembly on the ring-shaped plate.

[0010] Preferably, the driving part comprises an outer gear ring installed on the outer ring surface of the ring-shaped plate, a linkage tooth plate is engagedly connected at the teeth of the outer gear ring, and the linkage tooth plate cooperates with the outer gear ring to drive the ring-shaped plate to rotate so that the filtering part uniformly screens the crushed material.

[0011] Preferably, the middle part of the linkage tooth plate is fixed with a driving shaft for supporting the linkage tooth plate, a machine shell is installed on one side of the shell, and the linkage tooth plate and the driving shaft are located inside the machine shell, both ends of the driving shaft are rotatably connected inside the machine shell for supporting the driving shaft, and a driving source is installed outside the machine shell, and the output end of the driving source is fixed with one end of the driving shaft for driving the driving shaft to rotate.

[0012] Preferably, the crushing piece comprises a crushing block arranged inside the crushing cavity, and the crushing block is annular for crushing the crushed materials inside the crushing cavity, both ends of the crushing block are fixed with support shafts arranged coaxially with the crushing block for supporting the crushing block to maintain the stability of the crushing block, and the outer part of the support shaft is provided with a limiting plate for limiting the support shaft, and the outer part of the limiting plate and the inner wall of the annular plate are fixed with a support plate for supporting the limiting plate.

[0013] Preferably, the limiting piece comprises annular discs fixed symmetrically on the inner wall of the shell, and the annular discs are coaxially arranged with the annular plate, and one end of the annular plate towards the annular disc is rotationally connected to one side wall of the annular disc for supporting the annular plate, the limiting plate is provided with a first sliding rail in a vertical manner, the support shaft is slidingly connected inside the first sliding rail, the first sliding rail can slide along the extension direction of the first sliding rail, and one side of the annular disc towards the support shaft is provided with a second sliding rail.

[0014] Preferably, the second sliding rail is composed of an arc-shaped groove and a vertical groove, both ends of the arc-shaped groove are communicated with the top end and the bottom end of the vertical groove respectively, and one end of the support shaft extending out of the first sliding rail is slidingly connected inside the second sliding rail.

[0015] Preferably, the force storage piece comprises an arc-shaped block arranged inside the annular plate, and both sides of the arc-shaped block are fixed on the side walls of the corresponding annular discs, the lower side of the arc-shaped block is provided with a lifting plate, the top of the lifting plate is fixed with a lifting column, the bottom of the arc-shaped block is provided with a limiting hole matched with the lifting column, and the lifting column is slidingly connected inside the corresponding limiting hole for limiting the lifting column.

[0016] Preferably, the outer part of the lifting column is provided with a first return spring, the bottom of the first return spring is fixed on the top of the lifting plate, the top of the first return spring is fixed on the bottom of the arc-shaped block for supporting the lifting plate to reset the lifting plate.

[0017] The beneficial effects of the present application are: 1. After the driving source is started, the driving shaft is rotated, the linkage tooth plate is rotated, and is closely meshed with the outer gear ring to transmit the rotary power to the annular plate to rotate axially, so that the materials entering the crushing cavity of the annular plate are not static accumulation but in a continuous flow state, the materials are continuously tumbled and dispersed in the cavity to avoid uneven screening caused by local accumulation, and ensure that each part of the materials can fully contact with the filtering piece to uniformly screen the crushed materials.

[0018] 2、Through in the process of annular plate rotation, its through support plate drives limit board synchronous rotation, first slide rail on limit board and support shaft mutually cooperate, guide support shaft along the track of second slide rail on annular disc slide, when annular plate starts rotation, support shaft from arc-shaped groove bottom gradually slides to top, in this process, broken block is driven by support shaft and slowly rises from bottom to top in annular plate inside, with the rising of broken block, its relative motion with broken material changes constantly, carries out preliminary extrusion and crushing to broken material, this orderly rising motion makes broken material get fully stirred and turned in crushing cavity, prepares for subsequent strong crushing, effectively improves initial efficiency of crushing.

[0019] 3、Through when support shaft slides to the junction of arc-shaped groove top and vertical groove top, broken block reaches the highest point, at this time, the outer surface of broken block is tightly against the bottom of lifting plate, under the joint action of gravity and material pressure, lifting plate slides to arc-shaped block direction, lifting column slides in limit hole, extrudes first return spring simultaneously, first return spring stores a large amount of elastic potential energy after being extruded, when support shaft is separated from limit plate and the limitation of arc-shaped groove, under the action of gravity, support shaft freely falls from the top to the bottom of first slide rail, at the same time, first return spring releases the stored elastic potential energy rapidly, exerts a strong propelling force on broken block through lifting plate, further speeds up the falling speed of broken block, broken block hits the broken material at the bottom of annular plate at high speed, produces huge impact force, carries out strong crushing to broken material, this crushing mode of slow rising stirring, then free-falling strong impact greatly enhances crushing degree, can effectively crush various materials with high hardness, significantly improves crushing effect, makes the particle size of crushed material more uniform and small, better meets the needs of engineering construction.

[0020] 4、Through with the continuous rotation of annular plate, discharging port gradually slides to the bottom position of annular plate, at this time, the material in annular plate interior after crushing treatment rolls to filter piece under the action of gravity, filter piece immediately carries out fine filtering to these materials, filters out the material meeting particle size requirement through discharge port, and the material not meeting the requirement is continuously left in crushing cavity and waits for the next round of crushing treatment, the whole process is automatically cycled under the driving of annular plate rotation, does not need frequent manual intervention, realizes the continuous operation of crushing and filtering, this automatic crushing cycle mechanism greatly improves the overall working efficiency of crusher. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structural schematic view of the present application; Figure 2 It is the structural schematic view of the shell of the present application; Figure 3A structural schematic diagram of a driving member of the present application; Figure 4 A structural schematic diagram of a ring member of the present application; Figure 5 A structural schematic diagram of a crushing structure of the present application; Figure 6 A structural schematic diagram of a ring plate of the present application; Figure 7 A structural schematic diagram of a force storage member of the present application; Figure 8 A structural schematic diagram of a second sliding rail of the present application.

[0022] In the figure: 10, shell; 1011, feeding port; 1012, discharging port; 11, support; 20, filtering mechanism; 21, ring member; 2101, ring plate; 2102, discharging port; 2103, filtering member; 22, driving member; 2201, outer gear ring; 2202, linkage tooth plate; 2203, driving shaft; 2204, driving source; 2205, casing; 30, crushing structure; 31, crushing member; 3101, crushing block; 3102, support shaft; 3103, limiting plate; 3104, support plate; 32, limiting member; 3201, ring disc; 3202, first sliding rail; 3203, second sliding rail; 33, force storage member; 3301, arc-shaped block; 3302, lifting plate; 3303, lifting column; 3304, first return spring; 3305, limiting hole. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood by those skilled in the art that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0024] As shown in the accompanying drawings, Figures 1-8 A crusher for engineering construction, comprising a shell 10, a feeding port 1011 is formed on one side of the shell 10, and a feeding hopper is installed on the outer wall of the feeding port 1011, the crushing object can enter the inside of the shell 10 through the feeding hopper for crushing, a discharging port 1012 is installed at the bottom end of the shell 10, the crushing object entering the inside of the shell 10 can be discharged through the discharging port 1012, a support 11 is installed outside the shell 10 for supporting the shell 10.

[0025] The inside of the shell 10 is provided with a filtering mechanism 20 for filtering the broken pieces, so as to screen the broken pieces meeting the requirements.

[0026] The filtering mechanism 20 comprises a ring-shaped piece 21 and a driving piece 22 for driving the ring-shaped piece 21 to screen the broken pieces.

[0027] The ring-shaped piece 21 comprises a ring-shaped plate 2101 which is transversely arranged in the inside of the shell 10, and the inside of the ring-shaped plate 2101 has a broken cavity, the broken pieces can enter the inside of the broken cavity through a feeding hopper for breaking, the outer surface of the ring-shaped plate 2101 is provided with a discharging port 2102, the broken pieces after breaking can be discharged through the discharging port 2102, and the outside of the discharging port 2102 is provided with a filtering piece 2103 for screening the materials discharged through the discharging port 2102, so as to screen the broken pieces meeting the requirements.

[0028] The filtering piece 2103 comprises a mounting plate and a filtering screen, and the filtering screen is mounted in the inside of the mounting plate for screening the broken pieces, so as to screen the broken pieces meeting the requirements, and the mounting plate is mounted on the outer ring surface of the ring-shaped plate 2101 through bolts, so as to facilitate disassembly and assembly on the ring-shaped plate 2101.

[0029] The driving piece 22 comprises an outer gear ring 2201 mounted on the outer ring surface of the ring-shaped plate 2101, and the teeth of the outer gear ring 2201 are connected with a linkage gear plate 2202 in meshing connection, and the linkage gear plate 2202 can drive the ring-shaped plate 2101 to rotate in cooperation with the outer gear ring 2201, so as to uniformly screen the broken pieces and avoid the broken pieces from piling up in one place.

[0030] The middle part of the linkage gear plate 2202 is fixed with a driving shaft 2203 for supporting the linkage gear plate 2202 and maintaining the stability of the linkage gear plate 2202, and the driving shaft 2203 can also drive the linkage gear plate 2202 to rotate, so as to drive the ring-shaped plate 2101 to rotate axially in cooperation with the outer gear ring 2201.

[0031] One side of the shell 10 is provided with a machine shell 2205, and the linkage gear plate 2202 and the driving shaft 2203 are located in the inside of the machine shell 2205, and both ends of the driving shaft 2203 are rotatably connected in the inside of the machine shell 2205 for supporting the driving shaft 2203 and maintaining the stability of the driving shaft 2203, and the outside of the machine shell 2205 is provided with a driving source 2204, and the output end of the driving source 2204 is fixed with one end of the driving shaft 2203 for driving the driving shaft 2203 to rotate, so as to drive the ring-shaped plate 2101 to rotate axially through the outer gear ring 2201 and the linkage gear plate 2202.

[0032] In use, the worker turns on the driving source 2204 through the control system, so that the driving source 2204 is in an open state, and the output end of the driving source 2204 drives the rotation of the driving shaft 2203, the linkage tooth plate 2202 on the driving shaft 2203 drives the rotation of the annular plate 2101 through the outer gear ring 2201, and then the crushing object to be crushed is put into the inside of the shell 10 through the feeding hopper, the bottom end of the feeding hopper is also located in the crushing cavity of the annular plate 2101, and the material entering the crushing cavity is rolled by the rotation of the annular plate 2101, so that the crushing object is in a flowing state, the material is prevented from continuously accumulating at one place, and the screening efficiency of the filter 2103 on the material is improved.

[0033] The inside of the shell 10 is provided with a crushing structure 30 for crushing the crushing object, so as to improve the crushing efficiency of the crushing object.

[0034] The crushing structure 30 comprises a crushing piece 31, a limiting piece 32 and a force storage piece 33, the limiting piece 32 drives the crushing piece 31 to crush the crushing object, and the force storage piece 33 is used to improve the crushing degree of the crushing piece 31 on the crushing object.

[0035] The crushing piece 31 comprises a crushing block 3101 arranged in the crushing cavity and in an annular shape, which is used to crush the crushing object in the crushing cavity, both ends of the crushing block 3101 are fixedly connected with support shafts 3102 coaxially arranged with the crushing block 3101 and used to support the crushing block 3101, so as to maintain the stability of the crushing block 3101, the outside of the support shaft 3102 is provided with a limiting plate 3103 used to limit the support shaft 3102, and the outside of the limiting plate 3103 and the inner wall of the annular plate 2101 are fixedly connected with a support plate 3104 used to support the limiting plate 3103, so as to maintain the stability of the limiting plate 3103.

[0036] The limiting piece 32 comprises an annular disc 3201 fixed symmetrically on the inner wall of the shell 10, and the annular disc 3201 is coaxially arranged with the annular plate 2101, and one end of the annular plate 2101 is rotationally connected to one side wall of the annular disc 3201, the annular disc 3201 is used for supporting the annular plate 2101, thereby facilitating the resetting of the annular plate 2101, a first sliding rail 3202 is formed on the limiting plate 3103, the first sliding rail 3202 is vertically arranged, the supporting shaft 3102 is slidingly connected to the inside of the first sliding rail 3202, the first sliding rail 3202 can slide along the extension direction of the first sliding rail 3202, and a second sliding rail 3203 is formed on one side of the annular disc 3201 facing the supporting shaft 3102, the second sliding rail 3203 is composed of an arc-shaped groove and a vertical groove, the two ends of the arc-shaped groove are respectively communicated with the top end and the bottom end of the vertical groove, and one end of the supporting shaft 3102 extending out of the first sliding rail 3202 is slidingly connected to the inside of the second sliding rail 3203.

[0037] The force storage piece 33 comprises an arc-shaped block 3301 arranged in the inside of the annular plate 2101, and the two sides of the arc-shaped block 3301 are respectively fixed on the side wall of the corresponding annular disc 3201, the underside of the arc-shaped block 3301 is provided with a lifting plate 3302, the top of the lifting plate 3302 is fixed with a lifting column 3303, the bottom of the arc-shaped block 3301 is provided with a limiting hole 3305 matched with the lifting column 3303, and the lifting column 3303 is slidingly connected to the inside of the corresponding limiting hole 3305, for limiting the lifting column 3303, thereby keeping the lifting plate 3302 vertically up and down sliding, the outside of the lifting column 3303 is provided with a first reset spring 3304, the bottom of the first reset spring 3304 is fixed on the top of the lifting plate 3302, the top of the first reset spring 3304 is fixed on the bottom of the arc-shaped block 3301, for supporting the lifting plate 3302, thereby facilitating the resetting of the lifting plate 3302.

[0038] When the annular plate 2101 is in a vertical state, the support shaft 3102 is located at the bottom end of the first sliding rail 3202, and the support shaft 3102 is also located at the connection between the bottom end of the vertical groove and the bottom end of the arc-shaped groove. When the annular plate 2101 rotates, the annular plate 2101 drives the limiting plate 3103 to rotate through the support plate 3104. At this time, the limiting plate 3103 drives the support shaft 3102 to slide through the first sliding rail 3202. The support shaft 3102 is pushed by the limiting plate 3103 and slides along the extension track of the arc-shaped groove. The support shaft 3102 slides from the bottom end of the arc-shaped groove to the top end of the arc-shaped groove. At this time, the crushing block 3101 slides from the bottom end to the top end inside the annular plate 2101. The outer surface of the crushing block 3101 abuts against the bottom end of the lifting plate 3302. The lifting plate 3302 slides towards the arc-shaped block 3301. The lifting column 3303 slides inside the limiting hole 3305. At the same time, the lifting plate 3302 extrudes the first return spring 3304. When the support shaft 3102 slides to the connection between the top end of the arc-shaped groove and the top end of the vertical groove, the limiting plate 3103 is in a vertical state. The support shaft 3102 is out of the limiting of the limiting plate 3103 and the arc-shaped groove. The support shaft 3102 freely falls from the top end of the first sliding rail 3202 to the bottom end of the first sliding rail 3202. At the same time, the first return spring 3304 is reset. The first return spring 3304 applies a pushing force to the crushing block 3101 through the lifting plate 3302, so as to accelerate the falling of the crushing block 3101 and pound the broken material at the bottom end of the annular plate 2101, thereby crushing the broken material. With the rotation of the annular plate 2101, the discharge port 2102 slides to the bottom end of the annular plate 2101. The material inside the annular plate 2101 can roll to the filter element 2103, so that the filter element 2103 filters the broken material.

[0039] So far, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings. However, those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application. The technical scheme after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A crusher for use in construction work, characterized in that: The shell (10) is provided with a feeding port (1011) on one side, and a feeding hopper is installed on the outer wall of the feeding port (1011), so that the broken material can enter the inside of the shell (10) for crushing, and the bottom end of the shell (10) is provided with a discharge port (1012), so that the broken material entering the inside of the shell (10) can be discharged through the discharge port (1012), and a support (11) is installed outside the shell (10) to support the shell (10); The inside of the shell (10) is provided with a filtering mechanism (20), which comprises a ring-shaped part (21) and a driving part (22), and the driving part (22) is used to drive the ring-shaped part (21) to screen the broken material. The inside of the shell (10) is provided with a crushing structure (30), which comprises a crushing part (31), a limiting part (32) and a force storage part (33), the crushing part (31) comprises a crushing block (3101) arranged in the crushing cavity, which is used to crush the broken material in the crushing cavity, both ends of the crushing block (3101) are fixedly connected with a supporting shaft (3102), and a limiting plate (3103) is arranged outside the supporting shaft (3102), the limiting part (32) comprises a ring-shaped disc (3201) fixedly arranged on the inner wall of the shell (10), a first sliding rail (3202) is arranged on the limiting plate (3103) and vertically, and the supporting shaft (3102) is slidably connected in the first sliding rail (3202), the first sliding rail (3202) can slide along the extension direction of the first sliding rail (3202), and a second sliding rail (3203) is arranged on one side of the ring-shaped disc (3201) facing the supporting shaft (3102).

2. The crusher for engineering construction according to claim 1, characterized in that The ring-shaped part (21) comprises a ring-shaped plate (2101) arranged transversely in the shell (10), the inside of the ring-shaped plate (2101) has a crushing cavity, the broken material can enter the crushing cavity through the feeding hopper for crushing, the outer surface of the ring-shaped plate (2101) is provided with a discharge port (2102), the broken material after crushing can be discharged through the discharge port (2102), and a filtering part (2103) is arranged outside the discharge port (2102) to screen the material discharged through the discharge port (2102).

3. The crusher for engineering works as claimed in claim 2 wherein, The filtering part (2103) comprises a mounting plate and a filter screen, and the filter screen is mounted in the mounting plate to screen the broken material, and the mounting plate is bolted to the outer ring surface of the ring-shaped plate (2101) for easy disassembly and assembly on the ring-shaped plate (2101).

4. The crusher for engineering construction according to claim 2, characterized in that The driving part (22) comprises an outer gear ring (2201) mounted on the outer ring surface of the ring-shaped plate (2101), and the teeth of the outer gear ring (2201) are connected with a linkage tooth plate (2202), and the linkage tooth plate (2202) can drive the ring-shaped plate (2101) to rotate to make the filtering part (2103) uniformly screen the broken material.

5. The crusher for engineering construction according to claim 2, characterized in that, The middle part of the linkage tooth plate (2202) is fixed with a driving shaft (2203) for supporting the linkage tooth plate (2202), one side of the shell (10) is provided with a machine shell (2205), and the linkage tooth plate (2202) and the driving shaft (2203) are located inside the machine shell (2205), and both ends of the driving shaft (2203) are rotatably connected to the inside of the machine shell (2205) for supporting the driving shaft (2203), and the outside of the machine shell (2205) is provided with a driving source (2204), and the output end of the driving source (2204) is fixed to one end of the driving shaft (2203) for driving the driving shaft (2203) to rotate.

6. The crusher for engineering construction according to claim 2, characterized in that, The outer part of the limiting plate (3103) and the inner wall of the annular plate (2101) are fixed with a supporting plate (3104) for supporting the limiting plate (3103).

7. The crusher for engineering works as claimed in claim 6 wherein, The annular plate (2101) is coaxially arranged with the annular disc (3201), and one end of the annular plate (2101) towards the annular disc (3201) is rotatably connected to one side wall of the annular disc (3201) for supporting the annular plate (2101).

8. The crusher for engineering works as claimed in claim 1 wherein, The second sliding rail (3203) is composed of an arc-shaped groove and a vertical groove, and the two ends of the arc-shaped groove are respectively communicated with the top end and the bottom end of the vertical groove, and one end of the supporting shaft (3102) extending out of the first sliding rail (3202) is slidably connected to the inside of the second sliding rail (3203).

9. The crusher for engineering works as claimed in claim 6 wherein, The force storage member (33) includes an arc-shaped block (3301) arranged inside the annular plate (2101), and the two sides of the arc-shaped block (3301) are respectively fixed to one side wall of the corresponding annular disc (3201), the underside of the arc-shaped block (3301) is provided with a lifting plate (3302), the top of the lifting plate (3302) is fixed with a lifting column (3303), the bottom of the arc-shaped block (3301) is provided with a limiting hole (3305) matched with the lifting column (3303), and the lifting column (3303) is slidably connected to the inside of the corresponding limiting hole (3305) for limiting the lifting column (3303).

10. The engineering construction breaker of claim 9, wherein The outside of the lifting column (3303) is provided with a first return spring (3304), and the bottom of the first return spring (3304) is fixed to the top of the lifting plate (3302), and the top of the first return spring (3304) is fixed to the bottom of the arc-shaped block (3301) for supporting the lifting plate (3302) to reset the lifting plate (3302).

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