CN113021511A

CN113021511A - Hand-held type concrete crushing tool

Info

Publication number: CN113021511A
Application number: CN202110268767.2A
Authority: CN
Inventors: 徐亚宁
Original assignee: Individual
Current assignee: Guangdong Haorong Construction Engineering Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-06-25
Anticipated expiration: 2041-03-12
Also published as: CN113021511B

Abstract

The invention belongs to the technical field of concrete crushing, and discloses a handheld concrete crushing tool which comprises an outer shell, wherein a motor is fixedly installed at the top of the rear side of the outer shell, the output end of the motor penetrates through the outer shell of the outer shell to extend into an inner cavity of the outer shell and is fixedly connected with a main shaft, the other end of the main shaft is fixedly connected with a cam, an extending edge is arranged on the periphery of the cam, and a supporting wheel is in extrusion contact with the bottom of the cam. According to the invention, the push-pull rod is held by a worker, the support of the tool is realized by matching with the balancing weight at the other end, the worker does not need to press the body on the tool and directly feel the strong vibration sense of the tool, the physical and psychological burdens of the worker are reduced, the worker does not need to apply pressure when adjusting the crushing depth of the tool, the crushing depth can be adjusted by controlling the extension and contraction of the hydraulic rod, the operation is convenient, and the working pressure of the worker is also reduced.

Description

Hand-held type concrete crushing tool

Technical Field

The invention belongs to the technical field of concrete crushing, and particularly relates to a handheld concrete crushing tool.

Background

The concrete crusher is suitable for metallurgy, mine, building, chemical industry, water conservancy and railway departments, is used for various ores and rocks with fine crushing and medium crushing compressive strength below 250Mpa, and has the characteristics of large crushing ratio, uniform granularity of finished products, low power consumption, convenient maintenance and the like.

The crusher is large in size and not portable, effective impact crushing cannot be performed on a concrete surface, in addition, tools such as an impact drill and the like are used for crushing the concrete layer, and the tools have the obvious defect that a part of a body of a worker is pressed on the tools in order to support the impact drill when the tools are used, so that certain potential safety hazards exist, and the strong vibration of the tools still can cause great damage to the body of the worker after the tools are used for a long time, so that the health of the worker is damaged; secondly, the impact drill impacts and breaks generated dust to pollute the environment and harm the health of workers; thirdly, the drill bit of the percussion drill is continuously used for a long time to increase the temperature, so that the service life of the drilling machine is easily reduced; there is therefore a need for improvements to existing impact crushing tools.

Disclosure of Invention

The invention aims to solve the problems and provides a handheld concrete crushing tool which has the advantages of convenience in movement, indirect contact and automatic adjustment of the crushing depth.

In order to achieve the purpose, the invention provides the following technical scheme: a hand-held concrete crushing tool comprises an outer shell and a bracket, wherein the top of the rear side of the outer shell is fixedly provided with a motor, the output end of the motor penetrates through the shell of the shell body to extend into the inner cavity of the shell body and is fixedly connected with a main shaft, the other end of the main shaft is fixedly connected with a cam, the periphery of the cam is provided with an extension edge, the bottom of the cam is in extrusion contact with a supporting wheel, supporting seats are fixedly arranged on two sides of the supporting wheel, the bottom of each supporting seat is fixedly connected with an ejector rod, the ejector rod penetrates through the fixed block and extends to the lower part of the fixed block, the end part of the ejector rod below the fixed block is fixedly connected with a piston, the periphery of the piston is hermetically and slidably sleeved with a fixed cylinder, communicating pipes penetrate through the two sides of the fixed cylinder, a first one-way valve is arranged on the communicating pipe, and the other end of the communicating pipe extends into the water tank above the bracket; the bottom end of the fixed cylinder is fixedly connected with a supporting disk in a sealing mode, a top plate is arranged below the piston, a supporting rod is fixedly connected to the bottom of the top plate, a compression spring is movably sleeved on the outer surface of the supporting rod, a bearing seat is contacted with the bottom end of the compression spring, the bearing seat is fixedly installed at the top of the supporting disk, the supporting rod penetrates through the bearing seat and the supporting disk and extends to the position below the supporting disk, a fastening piece is fixedly connected to the supporting rod below the supporting disk, and an impact drill bit is fixedly connected to the bottom of the fastening piece; the bottom end of the supporting disc is fixedly connected with a hydraulic rod, the bottom end of the hydraulic rod is fixedly provided with a chassis, and the impact drill bit penetrates through the chassis and extends to the lower part of the chassis; the water pipe penetrates through the chassis and extends to the lower part of the chassis, a second check valve is arranged in the middle of the water pipe, and a spray head is arranged at the end of the water pipe.

According to a preferable technical scheme of the invention, a push-pull rod is fixedly installed on the rear side of the bottom end of the outer shell, a support is fixedly installed on the front portion of the bottom end of the outer shell, a balancing weight is clamped in the support, and a universal wheel is fixedly installed at the bottom of the chassis.

As a preferable technical scheme of the invention, the two extension edges are arranged on the front side and the rear side of the cam, the width of the supporting wheel is matched with the width of the cam and is positioned on the inner sides of the two extension edges, the extension edges mainly have the function of preventing the supporting wheel from being misaligned with the cam in high-frequency vibration, the extension edges can limit the supporting wheel, the displacement of the supporting wheel on the front side and the rear side is effectively limited, and the integral stability of the device is improved.

As a preferred technical scheme of the invention, the hydraulic rods are arranged below the support plate in three and are uniformly distributed at the top of the chassis, when the impact and crushing depth of the impact drill bit on the concrete layer needs to be changed, the hydraulic rods can be controlled to move upwards and downwards, the output end of the hydraulic rod extends, and then the mechanism on the support plate can be supported by the hydraulic rod to lift together, so that the overall height of the impact drill bit can also lift, thereby reducing the impact depth of the impact drill bit, and if the hydraulic rod contracts, the mechanism on the support plate can move downwards integrally, so that the entire impact drill bit extends downwards, and the impact and crushing depth of the impact drill bit is increased.

As a preferred technical scheme of the invention, the bottom of the chassis is provided with four universal wheels, the geometric relations among the four universal wheels correspond to four angular points of a square, the four universal wheels can enable the device to be well stabilized on the ground, and the moving direction of the whole device can be flexibly adjusted through the free steering function of the universal wheels, so that the impact object and the impact place of the impact drill bit at the bottom can be changed, a worker can save much labor by using the universal wheel moving device compared with the traditional portable device, and the burden of the worker is reduced.

As a preferred technical scheme of the invention, the bracket is correspondingly provided with five clamping points of the counter weight blocks, the counter weight blocks are of a detachable structure, and the number of the counter weight blocks can be increased or decreased automatically, in the practical application process, workers need to support the push-pull rod to match with the front counter weight block to stabilize the whole device, and the counter weight blocks exist to improve the overall quality of the device, so that in the process that the device impacts a concrete layer, a stable support can be provided for an impact drill to offset the reverse momentum of the impact drill, the stability of the real device is maintained, and the number of the counter weight blocks can be increased or decreased according to the requirements of different working environments, so that the counter weight block can be flexibly used.

As a preferred technical scheme of the invention, when the cam extrudes the ejector rod through the supporting wheel to drive the piston to move to the lowest part, the height of the piston is not lower than that of the pipe orifice of the communicating pipe, so that the fixed cylinder can be ensured to smoothly absorb water from the water tank through the communicating pipe.

As a preferred technical scheme of the invention, the through holes are provided with a plurality of water pipes which are arranged in an annular matrix and surround the periphery of the percussion bit, and the water pipes fixedly connected with the through holes are multi-section telescopic rods, so that the water spraying uniformity is improved, and the water pipes can be ensured to lift along with the hydraulic rod.

As a preferable technical scheme of the invention, the spray heads comprise atomizing spray heads and spray heads, the number of the spray heads is not less than two, the spray direction of the spray heads corresponds to the lower end of the impact drill bit, the dust suppression effect can be improved, and the cooling effect on the impact drill bit can be improved.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the push-pull rod is held by a worker, the support of the tool is realized by matching with the balancing weight at the other end, the worker does not need to press the body on the tool and directly feel the strong vibration sense of the tool, the physical and psychological burdens of the worker are reduced, the worker does not need to apply pressure when adjusting the crushing depth of the tool, the crushing depth can be adjusted by controlling the extension and contraction of the hydraulic rod, the operation is convenient, and the working pressure of the worker is also reduced.

2. According to the invention, the four universal wheels are arranged on the chassis of the device, so that the tools can be transferred and the like, and workers only need to push and pull the tools without carrying hands, so that the workload of the workers is reduced, and the transfer efficiency and the working efficiency are improved.

3. According to the invention, by arranging the cam, the supporting wheel, the ejector rod, the piston, the compression spring, the first one-way valve and the like, when the ejector rod drives the piston to move upwards, the first one-way valve is opened, water in the water tank is sucked into the fixed cylinder through the communicating pipe, and the water sucked into the fixed cylinder can cool the compression spring in the fixed cylinder; because the device is in the process, compression spring can be by the compression and the release that relapse, and compression spring can generate heat after long-time the use, cools off compression spring in inhaling the solid fixed cylinder through the water to the water tank, can effectively improve compression spring's life, improve device stability.

4. The invention is provided with a cam, a supporting wheel, a mandril, a piston, a compression spring, a second one-way valve and the like,

when the ejector rod drives the piston to move downwards, water is squeezed out of the fixed cylinder, the first one-way valve is closed at the moment, the water is prevented from returning to the water tank, when the water in the fixed cylinder is squeezed, the second one-way valve is opened, and the water is discharged through the through hole and the water pipe, so that on one hand, water can be sprayed on dust generated by impacting a punching bit and crushing concrete, the dust is inhibited, the working environment of workers is prevented from being polluted, and the harm to the health of the workers is caused; on the other hand, shower nozzle spun water can spray on the percussion bit, cools off the percussion bit, prevents that the long-time work of percussion bit from causing and generating heat, influences its self intensity, so can prolong percussion bit's life.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a schematic view of the internal structure of the housing of the present invention;

FIG. 4 is a schematic structural view of a destacking drum of the present invention;

fig. 5 is a front view of the structure of the tray of the present invention.

In the figure: 1. an outer housing; 2. a push-pull rod; 3. a support; 4. a balancing weight; 5. a motor; 6. a main shaft; 7. a cam; 8. extending the edge; 9. a support wheel; 10. a supporting seat; 11. a top rod; 12. a communicating pipe; 13. a fixed block; 14. a fixed cylinder; 15. a support disc; 16. a piston; 17. a top plate; 18. a support bar; 19. a compression spring; 20. a bearing seat; 21. a hydraulic lever; 22. a chassis; 23. a universal wheel; 24. a fastener; 25. a percussion drill bit; 26. a first check valve; 27. a water tank; 28. a through hole; 29. a water pipe; 30. a second one-way valve; 31. and (4) a spray head.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 5, the invention provides a hand-held concrete crushing tool, which comprises an outer shell 1 and a bracket 3, wherein a motor 5 is fixedly installed at the top of the rear side of the outer shell 1, the output end of the motor 5 penetrates through the outer shell of the outer shell 1 to extend into the inner cavity of the outer shell 1 and is fixedly connected with a main shaft 6, the other end of the main shaft 6 is fixedly connected with a cam 7, an extension edge 8 is arranged on the periphery of the cam 7, the bottom of the cam 7 is in extrusion contact with a supporting wheel 9, supporting seats 10 are fixedly installed on two sides of the supporting wheel 9, a top rod 11 is fixedly connected with the bottom of the supporting seat 10, the top rod 11 penetrates through a fixed block 13 and extends to the lower part of the fixed block 13, a piston 16 is fixedly connected with the end part of the top rod 11 below the fixed block 13, a fixed cylinder 14 is sleeved on, the compression spring 19 is compressed, and the mandril 11 drives the piston 16 to move downwards in the fixed cylinder 14; when the cam 7 rotates upwards, the compression spring 19 recovers elastic deformation and pushes the ejector rod 11 to move upwards by pushing the top plate 17, so that on one hand, the cam 7 and the supporting wheel 9 can be always in a linkage state, and on the other hand, the ejector rod 11 can drive the piston 16 to move upwards when moving upwards, and the corresponding function is completed.

A communicating pipe 12 penetrates through two sides of the fixed cylinder 14, a first one-way valve 26 is arranged on the communicating pipe 12, and the other end of the communicating pipe 12 extends into a water tank 27 above the bracket 3; when the mandril 11 drives the piston 16 to move upwards, the first one-way valve 26 is opened, water in the water tank 27 is sucked into the fixed cylinder 14 through the communicating pipe 12, and water sucked into the fixed cylinder 14 can cool the compression spring 19 in the fixed cylinder 14; because the compression spring 19 can be repeatedly compressed and released in the process of the device, the compression spring 19 can generate heat after being used for a long time, and the service life of the compression spring 19 can be effectively prolonged by sucking water in the water tank 27 into the fixed cylinder 14 to cool the compression spring 19; when the push rod 11 drives the piston 16 to move downwards, water is squeezed out of the fixed cylinder 14, the first one-way valve 26 is closed at the moment, the water is prevented from returning to the water tank 27, when the water in the fixed cylinder 14 is squeezed, the second one-way valve 30 is opened, the water is discharged through the through hole 28 and the water pipe 29, and the effects of dust fall and cooling of the impact drill 25 are achieved. When the cam 7 extrudes the mandril 11 through the supporting wheel 9 to drive the piston 16 to move to the lowest part, the height of the piston 16 is not lower than that of the nozzle of the communicating pipe 12, so that when the mandril 11 drives the piston 16 to move upwards, the second one-way valve 30 is closed, the first one-way valve 26 is opened, and water in the water tank 27 can be smoothly sucked into the fixed cylinder 14 through the communicating pipe 12; when the piston 16 is at a lower height than the communication pipe 12, after the water in the fixed cylinder 14 is removed, when the piston 16 moves upward, a negative pressure is formed in the fixed cylinder 14 due to the closing of the second check valve 30, which will result in that the piston 16 cannot move upward and cannot suck water from the water tank 27 through the communication pipe 12.

The bottom end of the fixed cylinder 14 is fixedly connected with a supporting plate 15 in a sealing manner, a top plate 17 is arranged below the piston 16, and the upper part of the top plate 17 is fixedly connected with the lower part of the ejector rod 11; the bottom of the top plate 17 is fixedly connected with a supporting rod 18, a compression spring 19 is movably sleeved on the outer surface of the supporting rod 18, a bearing seat 20 is contacted with the bottom end of the compression spring 19, the bearing seat 20 is fixedly installed at the top of the supporting disk 15, the supporting rod 18 penetrates through the bearing seat 20 and the supporting disk 15 and extends to the lower part of the supporting disk 15, a fastening piece 24 is fixedly connected onto the supporting rod 18 below the supporting disk 15, the bottom of the fastening piece 24 is fixedly connected with an impact drill 25, the bottom end of the supporting disk 15 is fixedly connected with a hydraulic rod 21, the bottom end of the hydraulic rod 21 is fixedly provided with a chassis 22, and the impact drill 25 penetrates; the supporting plate 15 positioned in the fixed cylinder 14 is provided with a through hole 28, a water pipe 29 is connected below the through hole 28, the water pipe 29 penetrates through the chassis 22 and extends to the lower part of the chassis 22, the middle part of the water pipe 29 is provided with a second one-way valve 30, and the end part of the water pipe is provided with a spray head 31. When the piston 16 moves upwards, water is sucked into the fixed cylinder 14 from the water tank 26 through the communication pipe 12 and the first one-way valve 26, the piston 16 moves downwards, the first one-way valve 26 is closed, the second one-way valve 30 is opened, water in the fixed cylinder 14 passes through the through hole 28 and is sprayed out from the spray head 31 through the water pipe 29, and therefore on one hand, dust generated by impacting and crushing concrete by the impact drill 25 can be sprayed, the dust is restrained, the working environment of workers is prevented from being polluted, and harm is caused to the health of the workers; on the other hand, the water sprayed from the spray head 31 can be sprayed on the impact drill 25 to cool the impact drill 25, so as to prevent the impact drill 25 from generating heat and affecting the strength of the impact drill 25 due to long-time operation, and thus the service life of the impact drill 25 can be prolonged;

the through holes 28 are arranged in a plurality of annular matrixes around the impact drill 25, so that the uniformity of water spraying of the nozzles 31 can be improved, the dust emission inhibiting effect and the cooling effect on the impact drill 25 are improved; the water pipe 29 fixedly connected with the through hole 28 is a multi-section telescopic rod, so that the water pipe 29 and the telescopic rod 21 can be synchronously stretched, the uniformity of water spraying of the nozzle 31 is further ensured, and the dust emission inhibiting effect and the cooling effect on the impact drill 25 are improved.

The spray head 31 comprises an atomizing spray head and a spraying spray head, wherein the atomizing spray head is used for atomizing water sprayed from the fixed cylinder 14 to form small water drops, so that the effect of inhibiting the dust generated by impacting and crushing the concrete by the impact drill 25 is improved; the spray nozzle is used for spraying larger water drops to the impact drill 25, and after water is sprayed to the impact drill 25 on one hand, the impact drill 25 is cooled; on the other hand, water sprayed onto the impact drill 25 moves downwards along with the impact drill 25 to infiltrate the impacted and crushed concrete, so that dust is reduced; the number of the spray nozzles is not less than two, so that the spray amount is increased, the concrete below the impact drill 25 is fully soaked, and the generation of flying dust during crushing is reduced; the spray nozzle is movably connected with the water pipe 29, and the spray direction of the spray nozzle corresponds to the lower end of the impact drill 25 by adjusting the spray direction of the spray nozzle, so that the cooling effect of water spray on the impact drill 25 is improved.

Wherein, the bottom rear side fixed mounting of shell body 1 has push-and-pull rod 2, and the anterior fixed mounting of shell body 1 bottom has support 3, and the inside joint of support 3 has balancing weight 4, and the bottom fixed mounting on chassis 22 has universal wheel 23.

Wherein, the extension limit 8 is provided with two in the front and back both sides of cam 7 altogether, and the width of supporting wheel 9 just is located the inboard of two extension limits 8 with the width looks adaptation of cam 7, and the main effect of extension limit 8 prevents that supporting wheel 9 can take place the phenomenon of dislocation unalignment with cam 7 in the high frequency vibration, and extension limit 8 can carry on spacingly to supporting wheel 9, has effectively restricted the displacement of supporting wheel 9 in front and back both sides, has improved the overall stability performance of device.

Wherein, the hydraulic stem 21 is provided with threely in the below of supporting disk 15 altogether and is the top of evenly arranging on chassis 22, change percussion bit 25 impact and broken degree of depth to concrete layer as needs, control hydraulic stem 21 go upward with down can, the output extension of hydraulic stem 21, then it can support the mechanism on the supporting disk 15 and rise together, thereby percussion bit 25's whole height also can rise, thereby the percussion depth of percussion bit 25 has been reduced, if hydraulic stem 21 contracts, then the mechanism on the supporting disk 15 can wholly descend, cause whole percussion bit 25 downwardly extending, percussion bit 25's impact and broken degree of depth have been increased.

Wherein, four universal wheels 23 are installed altogether to the bottom of chassis 22, the geometric relation between four universal wheels 23 corresponds for four angular points of square, four universal wheels 23 can make the better stability of device subaerial, and through the free function that turns to of universal wheels 23, the moving direction of regulation whole device that can be nimble, thereby change the impact object and the place of the percussion bit 25 of bottom, the staff utilizes the universal wheel mobile device, it is very much laborsaving than traditional hand-held, staff's burden has been lightened.

Wherein, correspond on the support 3 and be provided with the stuck point of five balancing weights 4, balancing weight 4 can increase and decrease by oneself for detachable construction and its quantity, at practical application's in-process, the staff need hold push-and-pull rod 2, balancing weight 4 in cooperation the place ahead, stabilize whole device, the existence of balancing weight 4 is for improving the overall quality of device, thereby strike the in-process on concrete layer at the device, can provide a stable support to strikeing drill bit 25, offset its reverse momentum, keep the stability of real individual device, and the quantity of balancing weight 4 can be according to the demand increase and decrease of different operational environment, and the flexible use.

When the device is used, a worker needs to hold the push-pull rod 2 by a hand, push the device to the position above a concrete layer to be crushed, place a prepared balancing weight 4 on the support 3, start the motor 5, drive the cam 7 to rotate when the motor 5 rotates, drive the supporting wheel 9 to vertically move up and down due to the rotation of the cam 7, drive the ejector rod 11 and the supporting rod 18 to move up and down, repeatedly compress and release the compression spring 19, and finally drive the impact drill 25 to move up and down and impact and crush the concrete layer; in the process that the mandril 11 drives the piston 16 to move upwards, the first one-way valve 26 is opened, the second one-way valve 30 is closed, water in the water tank 27 is sucked into the fixed cylinder 14 through the communicating pipe 12, and the water sucked into the fixed cylinder 14 can cool the compression spring 19 in the fixed cylinder 14; during the process that the ejector rod 11 drives the piston 16 to move downwards, water is squeezed out of the fixed cylinder 14, at the moment, the first one-way valve 26 is closed, the second one-way valve 30 is opened, and the water is discharged from the spray head 31 through the through hole 28 and the water pipe 29, so that the effects of dust fall and cooling of the impact drill 25 are achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hand-held concrete crushing tool, includes shell body (1) and support (3), its characterized in that: the rear side top of the shell body (1) is fixedly provided with a motor (5), the output end of the motor (5) penetrates through the shell of the shell body (1) and extends into the inner cavity of the shell body (1) and is fixedly connected with a main shaft (6), the other end of the main shaft (6) is fixedly connected with a cam (7), the periphery of the cam (7) is provided with an extension edge (8), the bottom of the cam (7) is in extrusion contact with a supporting wheel (9), two sides of the supporting wheel (9) are fixedly provided with supporting seats (10), the bottom of each supporting seat (10) is fixedly connected with a mandril (11), the mandril (11) penetrates through a fixed block (13) and extends to the lower part of the fixed block (13), the end part of the mandril (11) below the fixed block (13) is fixedly connected with a piston (16), and the periphery of the piston (16) is, a communicating pipe (12) penetrates through two sides of the fixed cylinder (14), a first one-way valve (26) is arranged on the communicating pipe (12), and the other end of the communicating pipe (12) extends into a water tank (27) above the bracket (3); the bottom end of the fixed cylinder (14) is fixedly connected with a supporting plate (15) in a sealing way,

a top plate (17) is arranged below the piston (16), a support rod (18) is fixedly connected to the bottom of the top plate (17), a compression spring (19) is movably sleeved on the outer surface of the support rod (18), a bearing seat (20) is contacted with the bottom end of the compression spring (19), the bearing seat (20) is fixedly installed at the top of the support plate (15), the support rod (18) penetrates through the bearing seat (20) and the support plate (15) and extends to the lower part of the support plate (15), a fastening piece (24) is fixedly connected to the support rod (18) below the support plate (15), and an impact drill bit (25) is fixedly connected to the bottom of the fastening piece (24); the bottom end of the supporting disc (15) is fixedly connected with a hydraulic rod (21), the bottom end of the hydraulic rod (21) is fixedly provided with a chassis (22), and the impact drill bit (25) penetrates through the chassis (22) and extends to the lower part of the chassis (22); be located be equipped with through-hole (28) on the inside supporting disk (15) of fixed section of thick bamboo (14), through-hole (28) below is connected with water pipe (29), water pipe (29) run through chassis (22) and extend to chassis (22) below, water pipe (29) middle part is equipped with second check valve (30) and the tip is equipped with shower nozzle (31).

2. A hand-held concrete breaking tool according to claim 1, characterised in that: the utility model discloses a portable multifunctional umbrella, including shell body (1), the anterior fixed mounting in shell body (1) bottom has push-and-pull rod (2), the anterior fixed mounting in shell body (1) bottom has support (3), the inside joint of support (3) has balancing weight (4), the bottom fixed mounting on chassis (22) has universal wheel (23).

3. A hand-held concrete breaking tool according to claim 1, characterised in that: the two extending edges (8) are arranged on the front side and the rear side of the cam (7), and the width of the supporting wheel (9) is matched with that of the cam (7) and is positioned on the inner sides of the two extending edges (8).

4. A hand-held concrete breaking tool according to claim 1, characterised in that: the hydraulic rods (21) are arranged below the supporting disc (15) in three and are uniformly distributed on the top of the chassis (22).

5. A hand-held concrete breaking tool according to claim 2, characterised in that: the bottom of the chassis (22) is provided with four universal wheels (23), and the four universal wheels (23) are in geometric relationship and correspond to four angular points of a square.

6. A hand-held concrete breaking tool according to claim 2, characterised in that: the support (3) is correspondingly provided with five clamping points of the balancing weights (4), and the balancing weights (4) are of detachable structures, and the number of the balancing weights can be increased or decreased automatically.

7. A hand-held concrete breaking tool according to claim 2, characterised in that: when the cam (7) extrudes the ejector rod (11) through the supporting wheel (9) to drive the piston (16) to move to the lowest part, the height of the piston (16) is not lower than that of the nozzle of the communicating pipe (12).

8. A hand-held concrete breaking tool according to claim 2, characterised in that: the through holes (28) are provided with a plurality of water pipes (29) which are arranged in an annular matrix and surround the periphery of the percussion drill bit (25), and the water pipes are fixedly connected with the through holes (28) and are multi-section telescopic rods.

9. A hand-held concrete breaking tool according to claim 8, characterised in that: the spray head (31) comprises an atomizing spray head and at least two spray heads, and the spray direction of the spray heads corresponds to the lower end of the impact drill bit (25).