Puncture water gun

By designing pipe joints, stop protrusions, impact seats, puncture mechanisms and drilling mechanisms in the puncture water gun, the problem of time-consuming and labor-intensive and fast wear when facing metal barriers in the puncture water gun in the prior art is solved, and a variety of ways to pass through obstacles and efficient fire extinguishing effects are achieved.

CN222566672UActive Publication Date: 2025-03-07魏伟
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Patent Information

Application Number
CN202420733933.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-10
Publication Date
2025-03-07
Estimated Expiration
2034-04-10

AI Technical Summary

Technical Problem

When facing metal barriers such as household security doors, existing puncture water guns require multiple sliding after-loaders, which is time-consuming and labor-intensive, and the dismantling head wears quickly, making it difficult to effectively pass through the obstacles and extinguish the fire.

Method used

A puncture water gun is designed, adopting a pipe joint and water inlet pipe structure, with stopping protrusions and impact seats on the front and rear sides. Combining a puncture mechanism and a drilling mechanism, it passes through the barrier in various ways and diverges the fire extinguishing material.

Benefits of technology

A variety of ways to pass through obstacles are realized, which reduces the working intensity of the operators, improves the efficiency of fire extinguishing operations, extends the service life of the equipment, and ensures the fire extinguishing effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a puncture water gun which comprises a pipe joint, the pipe joint is connected with a water inlet pipe, the front side and the rear side of the water inlet pipe are provided with stopping protrusions with the outer diameter larger than that of the water inlet pipe, and the water inlet pipe is connected with an impact seat located between the two stopping protrusions in a sliding mode. A puncturing mechanism used for puncturing obstacles and capable of dispersing the fire extinguishing materials outwards is arranged on the side, away from the pipe connector, of the water inlet pipe, a holding handle is arranged above the two stopping protrusions, a connecting sliding way is arranged below the two stopping protrusions, the cross section of the connecting sliding way is polygonal, and the connecting sliding way is in sliding connection with a drilling mechanism capable of drilling the obstacles. When the fire extinguishing device is used, the impact seat slides, the impact seat impacts on the stopping protrusion, the puncturing mechanism is pushed by the stopping protrusion to penetrate through the obstacle, the operator can also use the drilling mechanism to drill holes in the obstacle, the puncturing mechanism penetrates through holes drilled by the drilling mechanism, and fire extinguishing is conducted through diverging fire extinguishing materials.
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Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a puncture water gun. Background Art

[0002] In firefighting and rescue operations, the piercing water gun pierces the obstacles that hinder firefighters and releases fire extinguishing materials to achieve the purpose of extinguishing fires. The fire extinguishing materials can be water or a mixed liquid in which a chemical fire extinguishing agent is mixed in water. The Chinese utility model patent with patent number CN206391391U discloses a multifunctional door-breaking and water-discharging tool, which includes: a demolition head, which is conical on the outside and hollow on the inside, and a water outlet is provided on the side, and the water outlet is arranged toward the tip of the demolition head; a water inlet pipe, one end of which is provided with the demolition head and is connected to the inside of the demolition head to supply water to the demolition head, and the other end is used to connect a high-pressure water pipe; a force bearing seat, which is fixed on the water inlet pipe; a force booster, which is cylindrical and sleeved on the water inlet pipe, and is used to hit the force bearing seat to apply thrust to the demolition head. In actual use, the inventor found that the existing household anti-theft door mainly includes a metal shell and a lock transmission mechanism located inside the metal shell. The metal shell may also be provided with reinforcing ribs for improving the shell strength. Therefore, it is necessary to slide the force booster multiple times, which is time-consuming and labor-intensive. In addition, the demolition head wears out quickly after repeated use. There is an urgent need for a piercing water gun that has multiple ways to penetrate obstacles and extinguish fires. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a piercing water gun which has multiple ways of penetrating obstacles and can extinguish fires.

[0004] In order to solve the above technical problems, the utility model includes a pipe joint, which is connected to a water inlet pipe, and the front and rear sides of the water inlet pipe are both provided with stop protrusions with an outer diameter larger than the outer diameter of the water inlet pipe, and the water inlet pipe is slidably connected with an impact seat located between the two stop protrusions, and the side of the water inlet pipe away from the pipe joint is provided with a puncture mechanism for piercing an obstacle and capable of dispersing fire extinguishing materials outward. Its structural features are: a gripping handle is provided above the two stop protrusions and a connecting slide is provided below, the cross-sectional shape of the connecting slide is a polygon, and the connecting slide is slidably connected with a drilling mechanism capable of drilling holes in the obstacle.

[0005] After adopting the above structure, the operator holds the gripping handle with one hand and slides the impact seat with the other hand, so that the impact seat hits the stop protrusion on the side close to the puncture mechanism for multiple times. The puncture mechanism is pushed by the stop protrusion to pass through the obstacle, and then the pipe joint is connected to the material pipe for conveying the fire extinguishing material. The fire extinguishing material is dispersed to the external environment through the pipe joint, the water inlet pipe and the puncture mechanism for fire extinguishing. The operator can also use the drilling mechanism to drill holes in the obstacle, and the connecting slide with a polygonal cross-section shape can ensure the drilling mechanism. The piercing mechanism can be adjusted to a certain position so that the piercing mechanism can be moved smoothly and accurately, so as to prevent the piercing mechanism from rotating randomly. After the piercing mechanism drills a hole through the obstacle, the piercing mechanism is passed through the hole drilled by the piercing mechanism and the fire is extinguished by dispersing fire extinguishing materials. When the piercing mechanism pierces the hole, the impact seat can be slid to make the impact seat hit the stop protrusion to give the piercing mechanism a thrust to ensure the smooth passage of the piercing mechanism. Compared with the piercing mechanism directly piercing metal obstacles such as home anti-theft doors, the drilling mechanism can smoothly break through the obstacle by drilling, which reduces the working intensity of the operators and improves the efficiency of the fire extinguishing operation.

[0006] Furthermore, the puncture mechanism includes a water outlet pipe connected to the water inlet pipe, the water outlet pipe is provided with a plurality of first through holes, and the water outlet pipe is detachably connected with a puncture head. By providing the water outlet pipe and the puncture head, after the fire extinguishing material reaches the water outlet pipe, it is dispersed to the outside through the first through holes for extinguishing the fire, and the puncture head is used to puncture the obstruction.

[0007] Furthermore, the maximum outer diameter of the puncture head is equal to the maximum outer diameter of the water outlet pipe. By having the same outer diameter as the water outlet pipe, the puncture head and the water outlet pipe can prevent the puncture mechanism from getting stuck in the barrier, whether puncturing the barrier or pulling it out of the barrier after the fire is extinguished.

[0008] Furthermore, the puncture head includes a connecting pipe connected to the water outlet pipe, the connecting pipe is connected to the water outlet pipe by a thread, the connecting pipe is connected to a transition pipe, the transition pipe is connected to a special-shaped pipe with a diameter gradually increasing from the middle to the front and rear ends, the special-shaped pipe is connected to a solid tip with a maximum outer diameter gradually decreasing from the back to the front, the transition pipe is provided with a plurality of second through holes, and the special-shaped pipe is provided with a plurality of third through holes. By providing the connecting pipe, the puncture head is detachably connected to the water outlet pipe in a threaded manner, and the fire extinguishing material can also reach the external environment through the second through holes on the transition pipe. After the fire extinguishing material reaches the middle of the special-shaped pipe through the special-shaped pipe with a thin middle and thick ends, the flow rate increases, and the fire extinguishing material spray diverging outward through the third through hole is spherical, thereby ensuring the fire extinguishing effect.

[0009] Furthermore, the drilling mechanism includes a sliding seat slidably connected to a connecting slide, the sliding seat is rotatably connected to a rotating shaft whose axis extension direction is parallel to the axis extension direction of the water outlet pipe through at least two first bearing seats, a first bevel gear is provided on the rear side of the rotating shaft, the sliding seat is rotatably connected to a second bevel gear whose axis is perpendicular to the axis of the first bevel gear through a second bearing seat, the second bevel gear is provided with a rotating crank, the rotating shaft is connected to a drill bit through a drill bit mounting seat, a supporting plate recessed toward the drill bit is provided on the side of the sliding seat away from the drill bit, and a locking knob that can be pressed against the connecting slide is screwed on the sliding seat. The drill bit is moved close to the obstruction by sliding the sliding seat, and the operator's legs press against the supporting plate to give the drill bit a continuous thrust against the obstruction. The rotating crank is turned to rotate the second bevel gear, and the second bevel gear rotates the meshing first bevel gear. The first bevel gear drives the rotating shaft to rotate, and then the drill mounting seat and the drill bit on the rotating shaft rotate, so that the obstruction can be drilled. When drilling is not needed, the locking knob is turned to make it press against the connecting slide to lock the position of the drilling mechanism.

[0010] Furthermore, at least two reinforcing ribs are arranged at intervals on the outer surface of the water inlet pipe, and the front and rear ends of the reinforcing ribs are respectively against two stop protrusions, and the impact seat is provided with a through groove for avoiding the reinforcing ribs. The structural strength of the water inlet pipe is improved by providing the reinforcing ribs, and the continuous use of the water inlet pipe is guaranteed.

[0011] Furthermore, the impact seat is provided with two push-pull handles respectively located on the left and right sides of the gripping handle. By providing the push-pull handles, the operator can hold and push the push-pull handles to slide the impact seat, thereby ensuring the operator's hand safety and improving the convenience of operation.

[0012] Furthermore, the impact seat is provided with an oil inlet, and the oil inlet is provided with an oil hole that can connect the external environment to the outer surface of the water inlet pipe, and the oil inlet is detachably connected to an oil bottle for carrying lubricating oil. By providing the oil inlet and the oil bottle, the lubricating oil in the oil bottle can reach the outer surface of the water inlet pipe along the oil hole, and then the impact seat is lubricated by the lubricating oil when sliding on the water inlet pipe, thereby ensuring the smooth sliding of the impact seat; when drilling a hole, the impact seat and the water inlet pipe form a simple level gauge, and the operator adjusts the drill bit posture by observing the sliding direction of the impact seat. When the impact seat does not slide spontaneously, the drill bit posture is good, and there is no large-scale front high and back low or front low and back high posture.

[0013] Furthermore, a counterweight is provided on one side of the sliding seat relative to the drill bit. By providing the counterweight, the weight on both sides of the connecting slideway is balanced, the convenience of the operator during use is improved, and the accurate and stable puncture and fire extinguishing operation is ensured.

[0014] Furthermore, the support plate is an arc-shaped plate recessed toward the drill bit. By providing the arc-shaped plate as the support plate, the support plate is effectively fitted with the legs of the operator, thereby improving the accuracy and stability of the thrust applied by the legs of the operator to the drill bit, and ensuring the smooth progress of the fire extinguishing operation.

[0015] In summary, the utility model has the advantages of reasonable structure, convenient use, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model from a top view;

[0017] Figure 2 It is a structural schematic diagram of the utility model;

[0018] Figure 3 yes Figure 2 A partial enlarged view of area A in the middle;

[0019] Figure 4 It is a schematic diagram of the structure of the impact seat, push-pull handle, oil inlet and oil bottle;

[0020] Figure 5 It is a schematic diagram of the structure of the puncture head;

[0021] In the figure: 1. pipe joint; 2. water inlet pipe; 21. stop protrusion; 211. holding handle; 212. connecting slide; 22. reinforcing rib; 3. impact seat; 31. push-pull handle; 32. oil inlet; 321. oil hole; 33. oil bottle; 4. puncture mechanism; 41. water outlet pipe; 411. first through hole; 42. puncture head; 421. connecting pipe; 422. transition pipe; 4221. second through hole; 423. special-shaped pipe; 4231. third through hole; 424. tip; 5. drilling mechanism; 51. sliding seat; 511. locking knob; 512. counterweight; 52. first bearing seat; 53. rotating shaft; 54. first bevel gear; 55. second bearing seat; 56. second bevel gear; 561. rotating crank; 57. drill bit mounting seat; 58. drill bit; 59. top plate. DETAILED DESCRIPTION

[0022] Now, the utility model is further described in detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model. For ease of understanding, Figure 1 The upper side is the front side of the utility model. Figure 1 The lower side is the rear side of the utility model. Figure 1 The left side is the left side of the utility model. Figure 1 The right side is the right side of the utility model.

[0023] Reference Figures 1 to 5The utility model comprises a pipe joint 1, the pipe joint 1 is connected with a water inlet pipe 2, and the front and rear sides of the water inlet pipe 2 are both provided with stop protrusions 21 with an outer diameter larger than the outer diameter of the water inlet pipe 2. The water inlet pipe 2 is slidably connected with an impact seat 3 located between the two stop protrusions 21, and the impact seat 3 has an inner cavity for avoiding the water inlet pipe 2. The side of the water inlet pipe 2 away from the pipe joint 1 is provided with a puncture mechanism 4 for puncturing obstacles and dispersing fire extinguishing materials outward, and the puncture mechanism 4 comprises a water outlet pipe 41 connected to the water inlet pipe 2, and the water outlet pipe 41 is provided with a plurality of first through holes 411, and the water outlet pipe 41 is detachably connected with a puncture head 42. The maximum outer diameter of the puncture head 42 is equal to the maximum outer diameter of the water outlet pipe 41. The puncture head 42 includes a connecting pipe 421 connected to the water outlet pipe 41, the connecting pipe 421 is connected to the water outlet pipe 41 by a thread, the connecting pipe 421 is connected to a transition pipe 422, the transition pipe 422 is connected to a special-shaped pipe 423 whose diameter gradually increases from the middle to the front and rear ends, the special-shaped pipe 423 is connected to a solid tip 424 whose maximum outer diameter gradually decreases from the back to the front, the transition pipe 422 is provided with a plurality of second through holes 4221, and the special-shaped pipe 423 is provided with a plurality of third through holes 4231. The tip 424 is generally in a tapered shape with a gradually decreasing diameter from the back to the front. At least two reinforcing ribs 22 are provided at intervals on the outer surface of the water inlet pipe 2, and the front and rear ends of the reinforcing ribs 22 are respectively against the two stop protrusions 21, and the impact seat 3 is provided with a through groove for avoiding the reinforcing ribs 22. The impact seat 3 is provided with two push-pull handles 31 respectively located on the left and right sides of the gripping handle 211. The impact seat 3 is provided with an oil inlet 32, and the oil inlet 32 ​​is provided with an oil hole 321 that can connect the external environment to the outer surface of the water inlet pipe 2, and the oil inlet 32 ​​is detachably connected to an oil bottle 33 for carrying lubricating oil. The oil bottle 33 can be connected to the oil inlet 32 ​​through threads and a sealing ring, and the oil bottle 33 can carry lubricating oil with fire retardancy.

[0024] Reference Figures 1 to 5A gripping handle 211 is provided above the two stop protrusions 21 and a connecting slide 212 is provided below. The cross-sectional shape of the connecting slide 212 is polygonal. In this embodiment, the cross-sectional shape of the connecting slide 212 is rectangular. The edges and corners of the connecting slide 212 can be chamfered to ensure stable sliding of the components slidably connected to the connecting slide 212. The connecting slide 212 is slidably connected with a drilling mechanism 5 capable of drilling holes in the obstruction. The drilling mechanism 5 includes a sliding seat 51 slidably connected to the connecting slideway 212. The sliding seat 51 is rotatably connected to a rotating shaft 53 whose axis extension direction is parallel to the axis extension direction of the outlet pipe 41 through at least two first bearing seats 52. A first bevel gear 54 is provided at the rear of the rotating shaft 53. The sliding seat 51 is rotatably connected to a second bevel gear 56 whose axis is perpendicular to the axis of the first bevel gear 54 through a second bearing seat 55. The second bevel gear 56 is provided with a rotating crank 561. The rotating shaft 53 is connected to a drill bit 58 through a drill bit mounting seat 57. A supporting plate 59 recessed toward the drill bit 58 is provided on the side of the sliding seat 51 away from the drill bit 58. The supporting plate 59 is an arc-shaped plate recessed toward the drill bit 58. The sliding seat 51 is screwed with a locking knob 511 that can abut against the connecting slideway 212. A counterweight 512 is provided on one side of the sliding seat 51 opposite to the drill bit 58 . In this embodiment, the drill bit 58 is located on the right side of the sliding seat 51 , and the counterweight 512 is provided on the left side of the sliding seat 51 .

[0025] When the utility model is used, the operator holds the gripping handle 211 with one hand and slides the impact seat 3 with the other hand, so that the impact seat 3 hits the stop protrusion 21 on the side close to the piercing mechanism 4 for many times, and the piercing mechanism 4 is pushed by the stop protrusion 21 to pass through the obstacle, and then the pipe joint 1 is connected to the material pipe for conveying the fire extinguishing material. The fire extinguishing material is dispersed to the outside through the pipe joint 1, the water inlet pipe 2, the first through hole 411, the second through hole 4221 and the third through hole 4231 for extinguishing the fire, and the tip 424 of the piercing head 42 is used to pierce the obstacle. The operator can also use the drilling mechanism 5 to drill holes in obstacles. Specifically, the operator's legs support the support plate 59, giving the drill bit 58 a continuous thrust against the obstacle, and turning the rotating crank 561 to rotate the second bevel gear 56. The second bevel gear 56 rotates the meshing first bevel gear 54, and the first bevel gear 54 drives the rotating shaft 53 to rotate, and then the drill bit mounting seat 57 and the drill bit 58 on the rotating shaft 53 rotate, so that the obstacle can be drilled. When drilling is not needed, the locking knob 511 is turned to make it rest against the connecting slide 212 to achieve position locking of the drilling mechanism 5.

[0026] The utility model provides a piercing water gun, which can ensure the posture of the drilling mechanism and prevent the drilling mechanism from rotating randomly through a connecting slide with a polygonal cross-section. After the drilling mechanism drills and breaks through the obstacle, the piercing mechanism passes through the hole drilled by the drilling mechanism and extinguishes the fire through the divergent fire extinguishing material. When the piercing mechanism drills the hole, the impact seat can be slid to hit the stop protrusion to give the piercing mechanism a thrust to ensure the smooth passage of the piercing mechanism. Compared with the direct piercing of the piercing mechanism on metal obstacles such as household anti-theft doors, the drilling mechanism can smoothly break through the obstacle by drilling, reducing the work intensity of the operator and improving the efficiency of the fire extinguishing operation. By making the piercing head and the water outlet pipe of equal size outer diameter, whether it is piercing the obstacle or pulling it out of the obstacle after the fire is extinguished, it is prevented from getting stuck in the obstacle. By setting a connecting pipe, the puncture head is detachably connected to the water outlet pipe in a screw connection, and the fire extinguishing material can also reach the external environment through the second through hole on the transition pipe. After the fire extinguishing material reaches the middle of the special-shaped pipe through the thin middle and thick ends, the flow rate increases, and the fire extinguishing material spray diverging outward through the third through hole is spherical, ensuring the fire extinguishing effect. By setting a reinforcing rib, the structural strength of the water inlet pipe is improved, ensuring the continuous use of the water inlet pipe. By setting a push-pull handle, the operator can hold and push the push-pull handle to slide the impact seat, ensuring the safety of the operator's hands and improving the convenience of operation. By setting the oil inlet and the oil bottle, the lubricating oil in the oil bottle can reach the outer surface of the water inlet pipe along the oil hole, and then the impact seat is lubricated by the lubricating oil when sliding on the water inlet pipe, which ensures the smooth sliding of the impact seat; when drilling a hole, the impact seat and the water inlet pipe form a simple level gauge, and the operator adjusts the drill bit posture by observing the sliding direction of the impact seat. When the impact seat does not slide spontaneously, the drill bit posture is good, and there is no large-scale front high and back low or front low and back high posture. By setting the counterweight block, the weight on both sides of the connecting slide is balanced, which improves the convenience of the operator during use and ensures the accurate and smooth progress of the puncture fire extinguishing operation. By setting the arc plate as the top support plate, the top support plate effectively fits the operator's legs, which improves the accuracy and stability of the thrust applied by the operator's legs to the drill bit, and ensures the smooth progress of the fire extinguishing operation.

[0027] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims of this patent, they should all fall within the protection scope of the utility model.

Claims

1. A piercing water gun, comprising a pipe joint (1), the pipe joint (1) being connected to a water inlet pipe (2), the water inlet pipe (2) being provided with stop protrusions (21) having an outer diameter greater than that of the water inlet pipe (2) on both the front and rear sides, the water inlet pipe (2) being slidably connected with an impact seat (3) located between the two stop protrusions (21), the water inlet pipe (2) being provided with a piercing mechanism (4) for piercing an obstacle and capable of dispersing fire extinguishing material outward on a side away from the pipe joint (1), wherein: A gripping handle (211) is provided above the two stop protrusions (21) and a connecting slide (212) is provided below the two stop protrusions (21). The cross-sectional shape of the connecting slide (212) is polygonal, and the connecting slide (212) is slidably connected to a drilling mechanism (5) capable of drilling a hole in an obstruction.

2. The piercing water gun according to claim 1, characterized in that: The puncture mechanism (4) comprises a water outlet pipe (41) connected to the water inlet pipe (2), the water outlet pipe (41) being provided with a plurality of through-going first through holes (411), and the water outlet pipe (41) being detachably connected to a puncture head (42).

3. The piercing water gun according to claim 2, characterized in that: The maximum outer diameter of the piercing head (42) is equal to the maximum outer diameter of the water outlet pipe (41).

4. The piercing water gun according to claim 2, characterized in that: The piercing head (42) comprises a connecting pipe (421) connected to the water outlet pipe (41); the connecting pipe (421) is connected to the water outlet pipe (41) by means of a thread; the connecting pipe (421) is connected to a transition pipe (422); the transition pipe (422) is connected to a special-shaped pipe (423) whose diameter gradually increases from the middle to the front and rear ends; the special-shaped pipe (423) is connected to a solid tip (424) whose maximum outer diameter gradually decreases from the back to the front; the transition pipe (422) is provided with a plurality of second through holes (4221); and the special-shaped pipe (423) is provided with a plurality of third through holes (4231).

5. The piercing water gun according to claim 2, characterized in that: The drilling mechanism (5) comprises a sliding seat (51) slidably connected to the connecting slideway (212); the sliding seat (51) is rotatably connected to a rotating shaft (53) whose axis extension direction is parallel to the axis extension direction of the water outlet pipe (41) through at least two first bearing seats (52); a first bevel gear (54) is provided at the rear side of the rotating shaft (53); the sliding seat (51) is rotatably connected to a second bevel gear (56) whose axis is perpendicular to the axis of the first bevel gear (54) through a second bearing seat (55); the second bevel gear (56) is provided with a rotating crank (561); the rotating shaft (53) is connected to a drill bit (58) through a drill bit mounting seat (57); a supporting plate (59) recessed toward the drill bit (58) is provided on a side of the sliding seat (51) away from the drill bit (58); and a locking knob (511) capable of abutting against the connecting slideway (212) is screwed to the sliding seat (51).

6. The piercing water gun according to claim 1, characterized in that: At least two reinforcing ribs (22) are provided at intervals on the outer surface of the water inlet pipe (2), the front and rear ends of the reinforcing rib (22) respectively abut against two stop protrusions (21), and the impact seat (3) is provided with a through groove for avoiding the reinforcing rib (22).

7. The piercing water gun according to claim 6, characterized in that: The impact seat (3) is provided with two push-pull handles (31) respectively located on the left and right sides of the holding handle (211).

8. The piercing water gun according to claim 5, characterized in that: The impact seat (3) is provided with an oil inlet (32), the oil inlet (32) is provided with an oil hole (321) capable of connecting the external environment to the outer surface of the water inlet pipe (2), and the oil inlet (32) is detachably connected to an oil bottle (33) for carrying lubricating oil.

9. The piercing water gun according to claim 5, characterized in that: A counterweight block (512) is provided on one side of the sliding seat (51) relative to the drill bit (58).

10. The piercing water gun according to claim 5, characterized in that: The supporting plate (59) is an arc-shaped plate recessed toward the drill bit (58).

Citation Information

Patent Citations

  • Multi -functional water conservancy ware of forcing open door out

    CN206391391U