A free telescopic splash-proof device for a breaking hammer

Abstract

The utility model discloses a broken hammer free telescopic formula prevents splashing device belongs to broken hammer prevents splashing technical field. A broken hammer free telescopic formula prevents splashing device, including installing in the broken hammer bottom for preventing the splash of protective cover, the protective cover includes the first telescopic board and a plurality of second telescopic boards of fixed in the installation ring lower surface, a plurality of first telescopic board and a plurality of second telescopic boards all are circular distribution in the installation ring lower surface, a plurality of second telescopic boards all through the traction component traction contraction, the utility model discloses a broken hammer bottom sets up the protective cover to the stone that generates in working time splashes to all directions, through setting up a plurality of first telescopic board and a plurality of second telescopic boards, a plurality of first telescopic board and a plurality of second telescopic boards independent telescoping, thereby can realize each orientation free telescoping, can adapt to different shape, high and low broken object when shielding the splash, reach the purpose of close fitting.

Description

Technical Field

[0001] This utility model relates to the field of anti-splash technology for hydraulic breakers, and in particular to a free-extending anti-splash device for hydraulic breakers. Background Technology

[0002] A hydraulic breaker, also known as a breaker or a hammer, is a commonly used accessory for excavators. It is often used for tasks such as mountain clearing, road surface breaking, house demolition, bridge demolition, and rock breaking in mines. Existing hydraulic breakers can cause rock fragments to fly during the breaking process. Adding anti-splash devices to the hydraulic breaker can effectively prevent this.

[0003] Through years of research and innovation, we have developed patented technologies for anti-splash devices for rubber, spring, and steel plate hydraulic breakers. These patented technologies have provided excellent anti-splash effects during crushing operations. However, existing anti-splash devices can achieve a fully enclosed seal when contacting flat materials. But when crushing irregular materials, the bottom surface of the anti-splash device remains on the same horizontal plane. The anti-splash covers in each direction cannot freely extend or retract. When contacting irregular materials, the irregular shape of the materials causes the bottom surface of the anti-splash device to be pushed up by the highest point of the materials. In some areas, the anti-splash cover does not effectively fit the materials, resulting in a height difference between the material surface and the anti-splash cover in that area. This area is not effectively sealed, and fragments may fly out from the unsealed area.

[0004] Therefore, this application proposes a splash prevention device for hydraulic breakers that can solve the problem of partial directional sealing leakage. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the prior art by proposing a free-extending anti-splash device for hydraulic breakers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A free-retractable anti-splash device for a hydraulic breaker includes a protective cover installed at the bottom of the hydraulic breaker to block splashes. The protective cover includes a plurality of first telescopic plates and a plurality of second telescopic plates fixed to the lower surface of a mounting ring. The plurality of first telescopic plates and the plurality of second telescopic plates are all circularly distributed on the lower surface of the mounting ring. The plurality of second telescopic plates are all pulled and retracted by a traction assembly. The plurality of first telescopic plates retract synchronously with the adjacent second telescopic plates by a lifting assembly.

[0008] In some embodiments, the plurality of second telescopic plates correspond to the gaps between the plurality of first telescopic plates, and the plurality of second telescopic plates are all located around the plurality of first telescopic plates.

[0009] In some embodiments, the first telescopic plate and the plurality of second telescopic plates each include a plurality of trapezoidal plates stacked sequentially, wherein the trapezoidal plates located above are smaller than the trapezoidal plates located below, and guide rods are fixed to the bottom of the inner walls of the plurality of trapezoidal plates except the upper ones. The plurality of guide rods slide sequentially on the top of the adjacent upper trapezoidal plates, and the plurality of guide rods are parallel to each other.

[0010] In some embodiments, the traction assembly includes a plurality of traction ropes for pulling the bottom trapezoidal armor plate and a turntable for winding the plurality of traction ropes, one end of each of the plurality of traction ropes being disposed at the bottom of the bottom trapezoidal armor plate, and the turntable rotating on the surface of the mounting ring.

[0011] In some embodiments, the lifting assembly is located on the inner wall of the trapezoidal armor plate at the bottom of the second telescopic plate. The lifting assembly includes a baffle fixed to the surface of the trapezoidal armor plate at the bottom of the first telescopic plate and a stop bar that rotates on the inner wall of the trapezoidal armor plate at the bottom of the second telescopic plate. The height of the baffle is higher than the height of the stop bar, and the baffle is lifted while the stop bar is lifted.

[0012] In some embodiments, the rotation axis of the stop lever is located at the end of the stop lever away from the stop block, the traction rope is fixed in the middle of the stop lever, and a torsion spring for driving the stop lever to disengage from the stop block is sleeved on the surface of the rotation axis of the stop lever.

[0013] In some embodiments, a plurality of handles for facilitating 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 component that cooperates with two of the handles, the limiting component being used to limit the rotation position of the turntable.

[0014] In some embodiments, the limiting assembly includes a limiting sleeve for fitting onto the surface of the rotating handle and a vertical rod for sliding the limiting sleeve. The vertical rod is fixed to the inner wall of the mounting ring by bolts and is square.

[0015] In some embodiments, the mounting ring has an L-shaped cross-section and is fixed to the bottom of the breaker by a plurality of bolts.

[0016] In some embodiments, a camera for observing the hammer head is disposed inside the protective cover, the camera is fixed to the lower surface of the mounting ring, and a transparent shield for protecting the camera is disposed on the lower surface of the mounting ring.

[0017] Compared with the prior art, the present invention provides a free-extending anti-splash device for hydraulic breakers, which has the following beneficial effects.

[0018] 1. This utility model, by setting a protective cover at the bottom of the breaker hammer, prevents stones generated during operation from flying in all directions. By setting multiple first telescopic plates and multiple second telescopic plates, which can extend and retract independently, free extension and retraction in all directions can be achieved. While shielding the flying objects, it can adapt to crushed objects of different shapes and heights, achieving the purpose of close contact.

[0019] 2. In this utility model, when the breaker hammer is not in use, the traction component simultaneously drives multiple second telescopic plates to retract, reducing the impact of the protective cover. Therefore, a camera is installed to facilitate observation of the hammer head's position information, avoiding the protective cover's obstruction of the hammer head and affecting the operator's observation of the hammer head's position.

[0020] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of this utility model from a bottom view.

[0023] Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the first telescopic plate and the second telescopic plate in this utility model.

[0025] Figure 5 This is a cross-sectional structural diagram of the protective cover in this utility model.

[0026] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0027] Figure 7 This utility model Figure 1 Enlarged structural diagram at point B.

[0028] Figure 8 This utility model Figure 4 Enlarged structural diagram at point C.

[0029] Figure 9 This utility model Figure 5 Enlarged structural diagram at point D.

[0030] Figure 10This is a schematic diagram of the camera structure in this utility model.

[0031] Figure 11 This is a schematic diagram showing the protective cover of this utility model in close contact with an irregular object.

[0032] Figure 12 This is a schematic diagram of the protective cover of this utility model after it has been retracted.

[0033] In the picture:

[0034] 1. Hydraulic breaker; 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. Stop bar; 403. Torsion spring; 5. Rotary handle; 6. Limiting assembly; 601. Vertical pole; 602. Slider; 603. Limiting sleeve; 7. Camera; 701. Threaded ring; 702. Shielding cover; 8. Shielding strip. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] Reference Figure 1-12 A free-retractable anti-splash device for a hydraulic breaker 1 includes a protective cover 2 installed at the bottom of the hydraulic breaker 1 to block splashes. The protective cover 2 includes 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. The plurality of first telescopic plates 202 are circularly distributed on the lower surface of the mounting ring 201, and the plurality of second telescopic plates 203 are circularly distributed on the lower surface of the mounting ring 201 and correspond to the gaps between the plurality of first telescopic plates 202 respectively. The plurality of second telescopic plates 203 are all located around the plurality of first telescopic plates 202. The protective cover 2 is a cone with a bottom diameter larger than a top diameter.

[0037] Understandably, by setting a protective cover 2 at the bottom of the breaker hammer 1, the hammer head 101 is easily shielded, preventing stones generated during operation from flying in all directions. By setting multiple first telescopic plates 202 and multiple second telescopic plates 203, which can extend and retract independently, free extension and retraction in all directions can be achieved. While shielding the flying material, it can adapt to crushed materials of different shapes and heights, achieving a close fit. At the same time, the gaps between the multiple first telescopic plates 202 are covered by the multiple second telescopic plates 203, thus forming a fully enclosed anti-splash protective cover 2, ensuring that no flying material will escape due to leakage during the crushing process. By setting the protective cover 2 to a cone shape, the shielding area can be expanded, facilitating the operation of the hammer head 101.

[0038] Specifically, the mounting ring 201 has an L-shaped cross-section and is fixed to the bottom of the breaker 1 by multiple bolts.

[0039] It is understandable that by setting the mounting ring 201 and fixing the protective cover 2 to the lower surface of the mounting ring 201, the mounting ring 201 and the protective cover 2 can be easily disassembled and installed using multiple bolts, so that the protective cover 2 can be easily disassembled when it is not possible to use it in some special circumstances.

[0040] Specifically, the first telescopic plate 202 and the multiple second telescopic plates 203 each include multiple trapezoidal armor plates 2031 stacked sequentially. The trapezoidal armor plate 2031 located above is smaller than the trapezoidal armor plate 2031 located below. The trapezoidal armor plate 2031 located below wraps around the trapezoidal armor plate 2031 located above. The bottom of the inner wall of the multiple trapezoidal armor plates 2031 except for the top ones is fixed with guide rods 204. The multiple guide rods 204 slide sequentially on the top of the adjacent upper trapezoidal armor plates 2031. The multiple guide rods 204 are all parallel to each other.

[0041] It is understandable that the first telescopic plate 202 and the second telescopic plate 203 are composed of multiple trapezoidal armor plates 2031, which facilitates the free extension and retraction of the first telescopic plate 202 and the second telescopic plate 203. At the same time, the trapezoidal armor plates 2031 can form a conical protective cover 2 as the protective cover 2 unfolds. By setting multiple guide rods 204, the stability of the trapezoidal armor plates 2031 during sliding is improved, and the gaps are prevented from widening after the multiple trapezoidal armor plates 2031 are contracted and stacked, which would cause serious deformation of the protective cover 2. 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.

[0042] Specifically, multiple second telescopic plates 203 are all pulled and retracted by the traction assembly 3. The traction assembly 3 includes multiple traction ropes 301 for pulling the bottom trapezoidal armor plate 2031 and a turntable 304 for winding the multiple traction ropes 301. One end of each of the multiple traction ropes 301 is located at the bottom of the bottom trapezoidal armor plate 2031, and the other end of each of the multiple traction 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 traction ropes 301 are also passed through the bottom of the two middle trapezoidal armor plates 2031.

[0043] The guide wheel 302 rotates on the surface of the trapezoidal armor plate 2031 located above. The surface of the trapezoidal armor plate 2031 located above has a through groove for the traction rope 301 to pass through. Multiple guide plates 303 are fixed on the surface of the mounting ring 201. The surface of the guide plate 303 has a through hole for the traction rope 301 to pass through. The guide plate 303 is positioned corresponding to the guide wheel 302.

[0044] Turntable 304 rotates on the surface of mounting ring 201 and is located above multiple guide plates 303.

[0045] Understandably, to avoid the unfolded protective cover 2 affecting the storage or movement of the breaker 1, when the breaker 1 is not in use, the traction assembly 3 simultaneously retracts multiple second telescopic plates 203 to reduce the impact of the protective cover 2. When it is necessary to retract the second telescopic plates 203, the turntable 304 is rotated to simultaneously wind multiple traction ropes 301, reducing the length of the traction ropes 301 that are released. Under the action of the guide wheel 302 and the guide plate 303, the direction of the tension of the traction ropes 301 is changed, thereby causing the traction ropes 301 to pull the bottom trapezoidal clamp of the second telescopic plate 203 to slide upward, thereby causing multiple trapezoidal clamps to slide upward in sequence until the second telescopic plate 203 is completely retracted, thus achieving the purpose of retracting multiple second telescopic plates 203 simultaneously.

[0046] Specifically, multiple first telescopic plates 202 retract synchronously with adjacent second telescopic plates 203 via lifting assembly 4. Lifting assembly 4 is located on the inner wall of the trapezoidal armor plate 2031 at the bottom of the second telescopic plate 203. Lifting assembly 4 includes a baffle 401 fixed to the surface of the trapezoidal armor plate 2031 at the bottom of the first telescopic plate 202 and a stop bar 402 rotating on the inner wall of the trapezoidal armor plate 2031 at the bottom of the second telescopic plate 203. The height of the baffle 401 is higher than the height of the stop bar 402. 02. While being lifted, the baffle 401 is also lifted. The baffle 401 is L-shaped. The trapezoidal armor plate 2031 at the bottom of the second telescopic plate 203 has a notch on its side for the passage of the baffle 402. The rotation angle of the baffle 402 is limited by the width of the notch. The rotation axis of the baffle 402 is located at the end of the baffle 402 away from the block. The traction rope 301 is fixed in the middle of the baffle 402. A torsion spring 403 for driving the baffle 402 to disengage from the block is sleeved on the surface of the rotation axis of the baffle 402.

[0047] Understandably, when the protective cover 2 is fully extended, the traction rope 301 is in a relaxed state. The torsion spring 403 drives the stop bar 402 to rotate, causing one end of the stop bar 402 to disengage from the stop block. At this time, when the bottom of the protective cover 2 is against the irregular object, the second telescopic plate 203 cannot drive the first telescopic plate 202 to retract as it rises and retracts. The adjacent first telescopic plate 202 and second telescopic plate 203 can retract independently to adapt to the shape of the irregular object, thereby avoiding the gap between the first telescopic plate 202 and the second telescopic plate 203 and the irregular object being too large due to the synchronous retraction of the first telescopic plate 202 and the second telescopic plate 203.

[0048] When the protective cover 2 needs to be retracted, the turntable 304 winds the traction rope 301, tightening the traction rope 301, thereby pulling the stop bar 402 to rotate and causing the stop bar 402 to abut against the surface of the baffle 401. This allows the traction rope 301 to pull the second telescopic plate 203 to retract simultaneously. The traction rope 301 is then released through the turntable 304, causing the first telescopic plate 202 and the second telescopic plate 203 to lose tension. Under the action of gravity, the first telescopic plate 202 and the second telescopic plate 203 automatically unfold.

[0049] Specifically, a plurality of handles 5 are fixed on the upper surface of the turntable 304 for convenient rotation 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 limiting component 6 that cooperates with two of the handles 5. The limiting component 6 is used to limit the rotation position of the turntable 304.

[0050] The limiting component 6 includes a limiting sleeve 603 for fitting onto the surface of the rotating 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 via 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.

[0051] Understandably, 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 limiting component 6 and the handle 5. When the protective cover 2 needs to be retracted, the turntable 304 rotates to wind the traction rope 301. After the protective cover 2 is retracted, one of the handles 5 is located below the limiting sleeve 603, so that the limiting sleeve 603 and the slider 602 slide on the surface of the upright 601, and the limiting sleeve 603 is fitted onto the surface of the handle 5 to limit the turntable 304.

[0052] 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, another handle 5 is located below the limiting sleeve 603. The limiting sleeve 603 is fitted onto the surface of the other handle 5, thereby limiting the rotation of the turntable 304.

[0053] To avoid the limiting component 6 affecting the installation of the mounting ring 201, thereby allowing the upright 601 to be disassembled by bolts, after the mounting ring 201 is fitted onto the bottom of the breaker 1, the upright 601 is fixed to the inner wall of the mounting ring 201 with bolts, so as to facilitate the disassembly of the protective cover 2.

[0054] Specifically, the protective cover 2 is equipped with a camera 7 for observing the hammer head 101. The camera 7 is fixed to the lower surface of the mounting ring 201. The lower surface of the mounting ring 201 is provided with a transparent shield 702 for protecting the camera 7. The shield 702 is installed on the lower surface of the mounting ring 201 through a threaded ring 701. The threaded ring 701 is fixed to the lower surface of the mounting ring 201. The camera 7 is electrically connected to a display terminal, which is located in the excavator cab. Both the camera 7 and the display terminal are existing technologies, so they will not be described in detail.

[0055] Understandably, to avoid the protective cover 2 obstructing the hammer head 101 and affecting the staff's observation of the hammer head 101's position, a camera 7 and a display terminal are set up to facilitate the observation of the hammer head 101's position information; by setting up a shield 702, the camera 7 is prevented from being damaged by flying stones; by setting up a threaded ring 701, the worn shield 702 is easily replaced, and the light transmission effect of the transparent shield 702 is prevented from affecting the observation of the camera 7.

[0056] Specifically, multiple shielding strips 8 are fixed to the bottom of the trapezoidal armor plate 2031 at the bottom of the first telescopic plate 202 and the bottom of the trapezoidal armor plate 2031 at the bottom of the second telescopic plate 203, and the multiple shielding strips 8 are all made of rubber.

[0057] Understandably, by setting up the shielding strip 8, the bottom of the protective cover 2 is further shielded, reducing the splashing of gravel and the dust drifting during the breakage.

[0058] In this invention, when the hydraulic breaker 1 is in operation, the limiting sleeve 603 is disengaged from the handle 5, releasing the limiting effect on the handle 5. This allows the turntable 304 to rotate, releasing the traction rope 301 and causing the first telescopic plate 202 and the second telescopic plate 203 to lose tension. Under the action of gravity, the first telescopic plate 202 and the second telescopic plate 203 automatically unfold. Then, the turntable 304 is limited by the cooperation of the limiting sleeve 603 and the handle 5. By setting a protective cover 2 at the bottom of the hydraulic breaker 1, the hammer head 101 is easily shielded, preventing stones from flying in all directions during operation. Multiple first telescopic plates 202 and multiple second telescopic plates 203 extend and retract independently, allowing free extension and retraction in all directions. While shielding flying debris, they can adapt to crushing materials of different shapes and heights, achieving a close fit. At the same time, the multiple second telescopic plates 203 cover the gaps between the multiple first telescopic plates 202, forming a fully enclosed anti-splash protective cover 2, ensuring that no leakage occurs during the crushing process due to the enclosure. In the event of flying debris, when the protective cover 2 needs to be retracted, the turntable 304 rotates to wind the traction rope 301, causing the turntable 304 to simultaneously wind multiple traction ropes 301, reducing the length of the traction ropes 301 released. Under the action of the guide wheel 302 and the guide plate 303, the direction of the tension in the traction rope 301 is changed, causing the traction rope 301 to pull the bottom trapezoidal clamp of the second telescopic plate 203 upward, causing multiple trapezoidal clamps to slide upward in sequence until the second telescopic plate 203... 3. Fully retract, thereby achieving the purpose of retracting multiple second telescopic plates 203 simultaneously. While the second telescopic plates 203 are retracting, the traction rope 301 pulls the stop bar 402 to rotate and makes the stop bar 402 abut against the surface of the baffle 401, which can drive the second telescopic plates 203 to retract synchronously. When the protective cover 2 affects the use of the breaker hammer 1 under some special circumstances, the upright 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 enabling the breaker hammer 1 to work.

[0059] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples; although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A free-retractable anti-splash device for a hydraulic breaker, characterized in that, The device includes a protective cover (2) installed at the bottom of the breaker (1) to block flying debris. The protective cover (2) includes a plurality of first telescopic plates (202) and a plurality of second telescopic plates (203) fixed to the lower surface of the mounting ring (201). The plurality of first telescopic plates (202) and the plurality of second telescopic plates (203) are all circularly distributed on the lower surface of the mounting ring (201). The plurality of second telescopic plates (203) are all pulled and retracted by the traction assembly (3). The plurality of first telescopic plates (202) retract synchronously with the adjacent second telescopic plates (203) by the lifting assembly (4).

2. The free-retractable anti-splash device for a hydraulic breaker according to claim 1, characterized in that, The multiple second telescopic plates (203) correspond to the gaps between the multiple first telescopic plates (202), and the multiple second telescopic plates (203) are all located around the multiple first telescopic plates (202).

3. The free-retractable anti-splash device for a hydraulic breaker according to claim 1, characterized in that, The first telescopic plate (202) and the multiple second telescopic plates (203) each include multiple trapezoidal armor plates (2031) stacked sequentially. The trapezoidal armor plate (2031) located above is smaller than the trapezoidal armor plate (2031) located below. The bottom of the inner wall of the multiple trapezoidal armor plates (2031) except the upper ones is fixed with guide rods (204). The multiple guide rods (204) slide sequentially on the top of the adjacent upper trapezoidal armor plates (2031). The multiple guide rods (204) are all parallel to each other.

4. The free-retractable anti-splash device for a hydraulic breaker according to claim 1, characterized in that, The traction assembly (3) includes a plurality of traction ropes (301) for pulling the bottom trapezoidal armor plate (2031) and a turntable (304) for winding the plurality of traction ropes (301). One end of each of the plurality of traction ropes (301) is located at the bottom of the bottom trapezoidal armor plate (2031), and the turntable (304) rotates on the surface of the mounting ring (201).

5. A free-retractable anti-splash device for a hydraulic breaker according to claim 4, characterized in that, The lifting component (4) is located on the inner wall of the trapezoidal armor plate (2031) at the bottom of the second telescopic plate (203). The lifting component (4) includes a baffle (401) fixed on the surface of the trapezoidal armor plate (2031) at the bottom of the first telescopic plate (202) and a stop bar (402) rotating on the inner wall of the trapezoidal armor plate (2031) at the bottom of the second telescopic plate (203). The height of the baffle (401) is higher than the height of the stop bar (402). When the stop bar (402) is lifted, it drives the baffle (401) to be lifted.

6. The free-retractable anti-splash device for a hydraulic breaker according to claim 5, characterized in that, The rotation axis of the stop bar (402) is located at the end of the stop bar (402) away from the stop block. The traction rope (301) is fixed in the middle of the stop bar (402). A torsion spring (403) for driving the stop bar (402) to disengage from the stop block is sleeved on the surface of the rotation axis of the stop bar (402).

7. A free-retractable anti-splash device for a hydraulic breaker according to claim 4, characterized in that, The upper surface of the turntable (304) is fixed with a plurality of handles (5) for convenient rotation of the turntable (304). The distance between two of the 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 limiting component (6) that cooperates with two of the handles (5). The limiting component (6) is used to limit the rotation position of the turntable (304).

8. A free-retractable anti-splash device for a hydraulic breaker according to claim 7, characterized in that, The limiting component (6) includes a limiting sleeve (603) for fitting onto the surface of the rotating handle (5) and a vertical rod (601) for sliding the limiting sleeve (603). The vertical rod (601) is fixed to the inner wall of the mounting ring (201) by bolts and is square.

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

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

Images