Free telescopic anti-splashing device of breaking hammer

Abstract

The invention discloses a free telescopic anti-splashing device of a breaking hammer, and belongs to the technical field of breaking hammer splashing prevention. A free telescopic anti-splashing device of a breaking hammer comprises a protective cover installed at the bottom of the breaking hammer and used for blocking splashing objects, the protective cover comprises a plurality of first telescopic plates and a plurality of second telescopic plates which are fixed to the lower surface of an installation ring, and the first telescopic plates and the second telescopic plates are all circularly distributed on the lower surface of the installation ring; the multiple second telescopic plates are pulled to contract through a traction assembly. The protective cover is arranged at the bottom of the breaking hammer, so that stones generated during working splash to the periphery, the multiple first telescopic plates and the multiple second telescopic plates are arranged, the multiple first telescopic plates and the multiple second telescopic plates stretch out and draw back independently, and therefore free stretching out and drawing back in all directions can be achieved; the device can be suitable for crushed objects of different shapes and heights while blocking splash objects, and the purpose of tight attachment is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-splashing of breaker hammers, and in particular to a freely telescopic anti-splashing device for a breaker hammer. Background Art

[0002] A breaker hammer, also known as a breaker or a gun head, is one of the frequently used accessories of an excavator. It is often used in operations such as mountain excavation, road crushing, house demolition, bridge demolition, and stone crushing in mines. Existing breakers will cause gravel to splash during the crushing process. By adding an anti-splash device to the breaker hammer, the splashing of gravel can be effectively prevented.

[0003] After years of research and innovation, we have developed patented technologies for anti-splash devices for breaker hammers using rubber, spring, and steel plates. These patented technologies have a very good anti-splash effect during the crushing process. However, when the existing anti-splash device contacts flat objects, the bottom surface of the anti-splash device can be flush with the objects to achieve a fully enclosed package. However, when crushing irregular objects, the bottom surface of the anti-splash device is always on the same horizontal plane, and the anti-splash shields in each direction cannot be freely extended or retracted. When contacting irregular objects, due to the irregular shape of the objects, the bottom surface of the anti-splash device is always lifted up by the highest point of the objects. In some directions, the anti-splash shield does not effectively fit the objects, and there is a certain height difference between the surface of the objects and the anti-splash shield in that direction. This area is not effectively sealed, and the broken objects may fly out from the unsealed area in that direction.

[0004] Therefore, the present application proposes a breaker anti-splash device that can solve the problem of missing azimuth closure. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a freely telescopic anti-splashing device for a breaker hammer.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A freely retractable anti-splash device for a breaker hammer comprises a protective cover installed at the bottom of the breaker hammer for blocking splashes, the protective cover comprising a plurality of first retractable plates and a plurality of second retractable plates fixed to the lower surface of a mounting ring, the plurality of first retractable plates and the plurality of second retractable plates being distributed in a circular shape on the lower surface of the mounting ring, the plurality of second retractable plates being retracted by a traction assembly, and the plurality of first retractable plates being retracted synchronously with adjacent second retractable plates by a lifting assembly.

[0007] In some embodiments, the plurality of second telescopic plates respectively correspond to the gaps between the plurality of first telescopic plates, and the plurality of second telescopic plates are all located outside the plurality of first telescopic plates.

[0008] In some embodiments, the first telescopic plate and the multiple second telescopic plates each include a plurality of trapezoidal nail plates stacked in sequence, the trapezoidal nail plates located above are smaller than the trapezoidal nail plates located below, and guide rods are fixed to the bottom of the inner walls of the multiple trapezoidal nail plates except the upper ones, and the multiple guide rods slide in sequence on the top of the adjacent upper trapezoidal nail plates, and the multiple guide rods are parallel to each other.

[0009] In some embodiments, the traction assembly includes multiple traction ropes for pulling the bottom trapezoidal nail plate and a turntable for winding the multiple traction ropes. One end of the multiple traction ropes is set at the bottom of the trapezoidal nail plate at the bottom, and the turntable rotates on the surface of the mounting ring.

[0010] In some embodiments, the lifting component is located on the inner wall of the trapezoidal nail piece at the bottom of the second telescopic plate. The lifting component includes a baffle fixed on the surface of the trapezoidal nail piece at the bottom of the first telescopic plate and a baffle rod rotating on the inner wall of the trapezoidal nail piece at the bottom of the second telescopic plate. The height of the baffle is higher than the height of the baffle rod, and the baffle is lifted while the baffle rod is lifted.

[0011] In some embodiments, the rotating shaft of the barrier rod is located at the end of the barrier rod away from the block, the traction rope is fixed to the middle of the barrier rod, and the rotating shaft surface of the barrier rod is sleeved with a torsion spring for driving the barrier rod to disengage from the block.

[0012] In some embodiments, a plurality of handles for facilitating the rotation of the turntable are fixed on the upper surface of the turntable, wherein the distance between two of the handles is the same as the length required for the traction rope to pull the second telescopic plate to fully retract, and the inner wall of the mounting ring is provided with a limiting assembly that cooperates with two of the handles, and the limiting assembly is used to limit the rotation position of the turntable.

[0013] In some embodiments, the limiting assembly includes a limiting sleeve for being sleeved on the surface of the turning handle and a vertical rod for making the limiting sleeve slide. The vertical rod is fixed to the inner wall of the mounting ring by bolts, and the vertical rod is square.

[0014] In some embodiments, the mounting ring has an L-shaped cross section, and the mounting ring is fixed to the bottom of the breaker hammer by a plurality of bolts.

[0015] In some embodiments, a camera for observing the hammer head is provided inside the protective cover, the camera is fixed on the lower surface of the mounting ring, and a transparent shielding cover for protecting the camera is provided on the lower surface of the mounting ring.

[0016] Compared with the prior art, the present invention provides a freely retractable anti-splash device for a breaker hammer, which has the following beneficial effects.

[0017] 1. The present invention provides a protective cover at the bottom of the breaker hammer, so that stones generated during operation are splashed in all directions. By providing multiple first telescopic plates and multiple second telescopic plates, the multiple first telescopic plates and the multiple second telescopic plates are independently retracted, thereby achieving free retraction in all directions. While shielding the splashing objects, the breaker hammer can adapt to crushed objects of different shapes and heights to achieve the purpose of close fitting.

[0018] 2. In the present invention, when the breaker hammer is not in use, the traction assembly simultaneously drives multiple second telescopic plates to retract, reducing the influence of the protective cover. Therefore, a camera is provided to facilitate observation of the position information of the hammer head and avoid the protective cover blocking the hammer head and affecting the staff's observation of the position of the hammer head.

[0019] Other advantages, objects and features of the present invention will be described in part in the following description; and in part will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention.

[0021] Figure 2 It is a bottom view structural schematic diagram of the present invention.

[0022] Figure 3 It is a schematic diagram of the explosion structure of the present invention.

[0023] Figure 4 Schematic diagram of the structure of the first telescopic plate and the second telescopic plate in the present invention.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the protective cover in the present invention.

[0025] Figure 6 For the present invention Figure 4 Schematic diagram of the structure enlarged at point A.

[0026] Figure 7 For the present invention Figure 1 Schematic diagram of the structure enlarged at point B.

[0027] Figure 8 For the present invention Figure 4 Schematic diagram of the structure enlarged at point C in the middle.

[0028] Figure 9 For the present invention Figure 5 Schematic diagram of the structure enlarged at point D in the middle.

[0029] Figure 10 Schematic diagram of the structure of the camera in the present invention.

[0030] Figure 11 This is a schematic diagram of the protective cover of the present invention tightly fitting with an irregular object.

[0031] Figure 12 This is a schematic diagram of the protective cover of the present invention after it is retracted.

[0032] In the picture: 1. Breaker hammer; 101. Hammer head; 2. Protective cover; 201. Mounting ring; 202. First telescopic plate; 203. Second telescopic plate; 2031. Trapezoidal armor plate; 204. Guide rod; 3. Traction assembly; 301. Traction rope; 302. Guide wheel; 303. Guide plate; 304. Turntable; 4. Lifting assembly; 401. Baffle; 402. Baffle rod; 403. Torsion spring; 5. Turning handle; 6. Limiting assembly; 601. Vertical pole; 602. Slider; 603. Limiting sleeve; 7. Camera; 701. Threaded ring; 702. Shielding cover; 8. Shielding strip. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-12 A freely retractable anti-splash device for a breaker hammer 1 includes a protective cover 2 installed at the bottom of the breaker hammer 1 to block splashes. The protective cover 2 includes a plurality of first retractable plates 202 and a plurality of second retractable plates 203 fixed to the lower surface of a mounting ring 201. The plurality of first retractable plates 202 are distributed in a circular shape on the lower surface of the mounting ring 201, and the plurality of second retractable plates 203 are distributed in a circular shape on the lower surface of the mounting ring 201 and respectively correspond to the gaps between the plurality of first retractable plates 202. The plurality of second retractable plates 203 are all located outside the plurality of first retractable plates 202. The protective cover 2 is conical in shape with a bottom diameter greater than a top diameter.

[0035] It can be understood that by providing a protective cover 2 at the bottom of the breaker 1, it is convenient to shield the hammer head 101 and prevent stones generated during operation from flying around. By providing multiple first telescopic plates 202 and multiple second telescopic plates 203, multiple first telescopic plates 202 and multiple second telescopic plates 203 can be retracted separately, so that free retraction in all directions can be achieved. While shielding the splashing objects, it can adapt to crushed objects of different shapes and heights to achieve the purpose of tight fit. At the same time, the gaps between the multiple first telescopic plates 202 are blocked by the multiple second telescopic plates 203, thereby forming a fully enclosed anti-splash protective cover 2, ensuring that splashing objects will not fly out due to omissions in the closure during the crushing process; by setting the protective cover 2 to a cone, it is convenient to expand the shielding area, which is convenient for the operation of the hammer head 101.

[0036] Specifically, the cross section of the mounting ring 201 is L-shaped, and the mounting ring 201 is fixed to the bottom of the breaker hammer 1 by a plurality of bolts.

[0037] It can be understood that by setting the mounting ring 201 and fixing the protective cover 2 on the lower surface of the mounting ring 201, the mounting ring 201 and the protective cover 2 can be easily disassembled and installed through multiple bolts, so that when the protective cover 2 cannot be used in some special circumstances, the protective cover 2 can be easily disassembled.

[0038] Specifically, the first telescopic plate 202 and the multiple second telescopic plates 203 each include a plurality of trapezoidal nail plates 2031 stacked in sequence, the trapezoidal nail plate 2031 located above is smaller than the trapezoidal nail plate 2031 located below, and the trapezoidal nail plate 2031 located below wraps the trapezoidal nail plate 2031 above. Except for the upper ones, the bottom of the inner walls of the multiple trapezoidal nail plates 2031 are all fixed with guide rods 204, and the multiple guide rods 204 slide in sequence on the top of the adjacent upper trapezoidal nail plates 2031, and the multiple guide rods 204 are all parallel to each other.

[0039] It can be understood that the first telescopic plate 202 and the second telescopic plate 203 are formed by multiple trapezoidal nail pieces 2031, so that the first telescopic plate 202 and the second telescopic plate 203 can be freely extended and retracted. At the same time, the arrangement of the trapezoidal nail pieces 2031 can form a conical protective cover 2 as the protective cover 2 is unfolded; by arranging multiple guide rods 204, it is convenient to improve the stability of the trapezoidal nail pieces 2031 when sliding, and avoid the serious deformation of the protective cover 2 caused by the expansion of the gap after the multiple trapezoidal nail pieces 2031 are contracted and superimposed. At the same time, the multiple guide rods 204 can serve as a skeleton to improve the strength of the first telescopic plate 202 and the second telescopic plate 203.

[0040] Specifically, the multiple second telescopic plates 203 are all pulled and retracted by the pulling assembly 3. The pulling assembly 3 includes multiple pulling ropes 301 for pulling the bottom trapezoidal nail piece 2031 and a turntable 304 for winding the multiple pulling ropes 301. One end of each of the multiple pulling ropes 301 is set at the bottom of the trapezoidal nail piece 2031 at the bottom. The other end of each of the multiple pulling ropes 301 passes through the guide wheel 302 and the guide plate 303 and is wound around the surface of the turntable 304. The multiple pulling ropes 301 are passed through the bottom of the two trapezoidal nail pieces 2031 located in the middle. The guide wheel 302 rotates on the surface of the trapezoidal nail plate 2031 located above. The surface of the trapezoidal nail plate 2031 located above is provided with a through groove for the traction rope 301 to pass through. A plurality of guide plates 303 are fixed to the surface of the mounting ring 201. The surfaces of the guide plates 303 are provided with through holes for the traction rope 301 to pass through. The positions of the guide plates 303 and the guide wheels 302 correspond to each other. The turntable 304 rotates on the surface of the mounting ring 201 , and the turntable 304 is located above the plurality of guide plates 303 .

[0041] It can be understood that in order to prevent the unfolded protective cover 2 from affecting the storage or movement of the breaker 1, when the breaker 1 is not in use, the traction assembly 3 drives multiple second telescopic plates 203 to retract at the same time to reduce the impact of the protective cover 2; when the second telescopic plate 203 needs to be retracted, the turntable 304 is rotated to make the turntable 304 wind up multiple traction ropes 301 at the same time, reducing the length of the traction rope 301 released, and under the action of the guide wheel 302 and the guide plate 303, the pulling direction of the traction rope 301 is changed, so that the traction rope 301 pulls the trapezoidal splint at the bottom of the second telescopic plate 203 to slide upward, thereby causing the multiple trapezoidal splints to slide upward in turn until the second telescopic plate 203 is fully retracted, thereby achieving the purpose of retracting multiple second telescopic plates 203 at the same time.

[0042] Specifically, the plurality of first telescopic plates 202 are synchronously contracted with the adjacent second telescopic plates 203 through the lifting assembly 4. The lifting assembly 4 is located on the inner wall of the trapezoidal plate 2031 at the bottom of the second telescopic plate 203. The lifting assembly 4 includes a baffle 401 fixed to the surface of the trapezoidal plate 2031 at the bottom of the first telescopic plate 202 and a baffle rod 402 rotating on the inner wall of the trapezoidal plate 2031 at the bottom of the second telescopic plate 203. The height of the baffle 401 is higher than the height of the baffle rod 402. 02 is lifted and at the same time, the baffle 401 is lifted. The baffle 401 is L-shaped. A notch is provided on the side of the trapezoidal armor plate 2031 at the bottom of the second telescopic plate 203 for the baffle rod 402 to pass through. The rotation angle of the baffle rod 402 is limited by the width of the notch. The rotation axis of the baffle rod 402 is located at the end of the baffle rod 402 away from the block. The traction rope 301 is fixed to the middle of the baffle rod 402. The surface of the rotation axis of the baffle rod 402 is provided with a torsion spring 403 for driving the baffle rod 402 to disengage from the block.

[0043] It is understandable that when the protective cover 2 is fully deployed, the traction rope 301 is in a relaxed state, and the blocking rod 402 is driven to rotate by the torsion spring 403, so that one end of the blocking rod 402 is separated from the block. At this time, when the bottom of the protective cover 2 contacts the irregular object, the second telescopic plate 203 rises and contracts, and cannot drive the first telescopic plate 202 to contract. The adjacent first telescopic plate 202 and the second telescopic plate 203 can each contract independently to adapt to the shape of the irregular object, thereby avoiding the first telescopic plate 202 and the second telescopic plate 203 from contracting synchronously and causing an excessively large gap between the irregular object and the first telescopic plate 202 and the second telescopic plate 203. When the protective cover 2 needs to be retracted, the turntable 304 winds up the traction rope 301, and the traction rope 301 is tightened, thereby pulling the blocking rod 402 to rotate and causing the blocking rod 402 to contact the surface of the baffle 401, so that the traction rope 301 can drive the second telescopic plate 203 to retract while pulling the second telescopic plate 203 to retract synchronously; the traction rope 301 is released through the turntable 304, so that the first telescopic plate 202 and the second telescopic plate 203 lose tension, and under the action of gravity, the first telescopic plate 202 and the second telescopic plate 203 are automatically unfolded.

[0044] Specifically, a plurality of handles 5 for facilitating the rotation of the turntable 304 are fixed on the upper surface of the turntable 304. The distance between two handles 5 is the same as the length required for the traction rope 301 to pull the second telescopic plate 203 to fully retract. The inner wall of the mounting ring 201 is provided with a limit assembly 6 that cooperates with two of the handles 5. The limit assembly 6 is used to limit the rotation position of the turntable 304. The limiting assembly 6 includes a limiting sleeve 603 for being mounted on the surface of the handle 5 and a vertical rod 601 for sliding the limiting sleeve 603. The limiting sleeve 603 slides on the surface of the vertical rod 601 through a slider 602. The vertical rod 601 is fixed to the inner wall of the mounting ring 201 by bolts. The vertical rod 601 is square.

[0045] It can be understood that in order to prevent the free rotation of the turntable 304 from affecting the release length of the traction rope 301, the rotation of the turntable 304 is limited by the limit assembly 6 and the rotating handle 5. When the protective cover 2 needs to be retracted, the turntable 304 is rotated to wind the traction rope 301. After the protective cover 2 is retracted into place, one of the rotating handles 5 is located under the limiting sleeve 603, so that the limiting sleeve 603 and the slider 602 slide on the surface of the vertical rod 601, and the limiting sleeve 603 is sleeved on the surface of the rotating handle 5 to limit the turntable 304. When the protective cover 2 needs to be unfolded, the turntable 304 is rotated to release the traction rope 301. After the protective cover 2 is fully unfolded, the other rotating handle 5 is located below the limiting sleeve 603. The limiting sleeve 603 is sleeved on the surface of the other rotating handle 5, thereby limiting the rotation of the turntable 304. In order to prevent the limiting assembly 6 from affecting the installation of the mounting ring 201, the vertical rod 601 can be disassembled by bolts. After the mounting ring 201 is sleeved on the bottom of the breaker 1, the vertical rod 601 is fixed to the inner wall of the mounting ring 201 with bolts to facilitate the disassembly of the protective cover 2.

[0046] Specifically, a camera 7 for observing the hammer head 101 is provided inside the protective cover 2, and the camera 7 is fixed on the lower surface of the mounting ring 201. The lower surface of the mounting ring 201 is provided with a transparent shielding cover 702 for protecting the camera 7. The shielding cover 702 is installed on the lower surface of the mounting ring 201 through a threaded ring 701, and the threaded ring 701 is fixed on the lower surface of the mounting ring 201. The camera 7 is electrically connected to the display terminal, and the display terminal is located in the excavator cab. The camera 7 and the display terminal are both existing technologies, so they are not described in detail.

[0047] It can be understood that in order to avoid the protective cover 2 blocking the hammer head 101 and affecting the staff's observation of the position of the hammer head 101, a camera 7 and a display terminal are set to facilitate the observation of the position information of the hammer head 101; by setting the shielding cover 702, the camera 7 is prevented from being damaged by flying stones, and by setting the threaded ring 701, the worn shielding cover 702 is easily replaced, and the light transmission effect of the transparent shielding cover 702 is prevented from affecting the observation of the camera 7.

[0048] Specifically, a plurality of shielding strips 8 are fixed to the bottom of the trapezoidal nail piece 2031 at the bottom of the first telescopic plate 202 and the bottom of the trapezoidal nail piece 2031 at the bottom of the second telescopic plate 203 , respectively. The plurality of shielding strips 8 are all made of rubber.

[0049] It is understandable that by providing the shielding strip 8, the bottom of the protective cover 2 is further shielded, thereby reducing the splashing of gravel and reducing the floating of dust during crushing.

[0050] The first and second telescopic plates 202 and 203 are automatically extended under the action of gravity, and then the turntable 304 is limited by the cooperation of the limiting sleeve 603 and the rotating handle 5. The protective cover 2 is provided at the bottom of the breaker 1, so as to facilitate shielding the hammer head 101 and prevent stones generated during operation from flying around. The multiple first telescopic plates 202 and the multiple second telescopic plates 203 are independently extended and retracted, so as to achieve free extension and retraction in all directions, and can adapt to crushed objects of different shapes and heights while shielding the splashing objects, so as to achieve the purpose of close fitting. At the same time, the gaps between the multiple first telescopic plates 202 are blocked by the multiple second telescopic plates 203, so as to form a fully enclosed anti-splash protective cover 2, so as to ensure that there will be no sealing omissions during the crushing process. When splashing occurs, when the protective cover 2 needs to be retracted, the turntable 304 is rotated to wind the traction rope 301, so that the turntable 304 can wind multiple traction ropes 301 at the same time, reducing the length of the traction rope 301 released. Under the action of the guide wheel 302 and the guide plate 303, the pulling direction of the traction rope 301 is changed, so that the traction rope 301 pulls the trapezoidal clamping plate at the bottom of the second telescopic plate 203 to slide upward, so that the multiple trapezoidal clamping plates slide upward in sequence until the second telescopic plate 203 is retracted. 3 is fully retracted, thereby achieving the purpose of retracting multiple second telescopic plates 203 at the same time. When the second telescopic plates 203 are retracted, the traction rope 301 pulls the blocking rod 402 to rotate and makes the blocking rod 402 contact the surface of the baffle 401, which can drive the second telescopic plates 203 to retract synchronously; when some special circumstances affect the use of the breaker 1, the vertical rod 601 is removed by bolts, and then the mounting ring 201 is removed by bolts, thereby completing the removal of the entire protective cover 2 and allowing the breaker 1 to work.

[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are mutually inconsistent; although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A free-retractable anti-splash device for a breaker hammer, characterized in that: The invention comprises a protective cover (2) installed at the bottom of a breaker hammer (1) for blocking splashing objects, wherein the protective cover (2) comprises a plurality of first telescopic plates (202) and a plurality of second telescopic plates (203) fixed to the lower surface of a mounting ring (201), wherein the plurality of first telescopic plates (202) and the plurality of second telescopic plates (203) are all distributed in a circular shape on the lower surface of the mounting ring (201), and the plurality of second telescopic plates (203) are all pulled and retracted by a pulling assembly (3), and the plurality of first telescopic plates (202) are synchronously retracted with adjacent second telescopic plates (203) by a lifting assembly (4).

2. A breaker hammer free telescopic anti-splash device according to claim 1, characterized in that: The plurality of second telescopic plates (203) respectively correspond to the gaps between the plurality of first telescopic plates (202), and the plurality of second telescopic plates (203) are all located outside the plurality of first telescopic plates (202).

3. The free-retractable anti-splash device for a breaker hammer according to claim 1, characterized in that: The first telescopic plate (202) and the plurality of second telescopic plates (203) each comprise a plurality of sequentially stacked trapezoidal nail pieces (2031), wherein the trapezoidal nail piece (2031) located at the top is smaller than the trapezoidal nail piece (2031) located at the bottom, and guide rods (204) are fixed to the bottom of the inner walls of the plurality of trapezoidal nail pieces (2031) except the upper ones, and the plurality of guide rods (204) slide sequentially on the top of the adjacent upper trapezoidal nail piece (2031), and the plurality of guide rods (204) are parallel to each other.

4. The free-retractable anti-splash device for a breaker hammer according to claim 1, characterized in that: The traction assembly (3) comprises a plurality of traction ropes (301) for pulling the bottommost trapezoidal nail piece (2031) and a turntable (304) for winding the plurality of traction ropes (301), one end of each of the plurality of traction ropes (301) being arranged at the bottom of the trapezoidal nail piece (2031) at the bottom, and the turntable (304) rotating on the surface of the mounting ring (201).

5. The free-retractable anti-splash device for a breaker hammer according to claim 4, characterized in that: The lifting assembly (4) is located on the inner wall of the trapezoidal nail piece (2031) at the bottom of the second telescopic plate (203), and the lifting assembly (4) comprises a baffle (401) fixed on the surface of the trapezoidal nail piece (2031) at the bottom of the first telescopic plate (202) and a baffle rod (402) rotating on the inner wall of the trapezoidal nail piece (2031) at the bottom of the second telescopic plate (203). The height of the baffle (401) is higher than the height of the baffle rod (402), and when the baffle rod (402) is lifted, the baffle (401) is also lifted.

6. A breaker hammer free telescopic anti-splash device according to claim 5, characterized in that: The rotating shaft of the blocking rod (402) is located at one end of the blocking rod (402) away from the block, the traction rope (301) is fixed to the middle of the blocking rod (402), and a torsion spring (403) is sleeved on the surface of the rotating shaft of the blocking rod (402) for driving the blocking rod (402) to separate from the block.

7. The free-retractable anti-splash device for a breaker hammer according to claim 4, characterized in that: A plurality of rotating handles (5) for facilitating the rotation of the rotating disk (304) are fixed on the upper surface of the rotating disk (304), wherein the distance between two of the rotating handles (5) is the same as the length required for the traction rope (301) to pull the second telescopic plate (203) to fully retract, and a limiting assembly (6) cooperating with two of the rotating handles (5) is provided on the inner wall of the mounting ring (201), and the limiting assembly (6) is used to limit the rotation position of the rotating disk (304).

8. The free-retractable anti-splash device for a breaker hammer according to claim 7, characterized in that: The limiting assembly (6) comprises a limiting sleeve (603) for being sleeved on the surface of the turning handle (5) and a vertical rod (601) for enabling the limiting sleeve (603) to slide. The vertical rod (601) is fixed to the inner wall of the mounting ring (201) by bolts, and the vertical rod (601) is square.

9. The free-retractable anti-splash device for a breaker hammer according to claim 1, characterized in that: The mounting ring (201) has an L-shaped cross section, and the mounting ring (201) is fixed to the bottom of the breaker hammer (1) via a plurality of bolts.

10. The free-retractable anti-splash device for a breaker hammer according to claim 1, characterized in that: A camera (7) for observing the hammer head (101) is provided inside the protective cover (2); the camera (7) is fixed to the lower surface of the mounting ring (201); and a transparent shielding cover (702) for protecting the camera (7) is provided on the lower surface of the mounting ring (201).

Images