Carving pneumatic chipping hammer with adjustable working frequency

Abstract

The carving pneumatic chipping hammer with the adjustable working frequency comprises a first cylinder and a second cylinder, the left side of the first cylinder is in threaded connection with the second cylinder, an adjusting mechanism is arranged in the first cylinder, the left end of the second cylinder is fixedly connected with a mounting head, and a protection mechanism is arranged on the left side of the mounting head; and a carving shovel is mounted on the left side of the mounting head, a first sliding rod is fixedly connected to the interior of the first cylinder, and a sliding block is slidably connected to the outer wall of the first sliding rod. The pin rod drives the transverse rod to move through a sliding groove formed in the transverse rod, the transverse rod drives the baffle to rotate, the inclination angle of the rotating rod changes, and when gas moves leftwards through the circular ring, the inclination angle of the baffle is different, and the passing amount of the gas is different. And therefore, the working frequencies of the carving shovels are different, and the working frequencies of the carving shovels can be conveniently adjusted according to actual use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of engraving air shovels, in particular to an engraving air shovel with adjustable working frequency. Background Art

[0002] The air shovel uses compressed air as its power to make the hammer inside it reciprocate and hit the shovel chisel, thereby enabling the shovel chisel to chisel metal and building materials.

[0003] For example, a pneumatic shovel with patent number CN213411877U includes a handle body, an air inlet hole is provided on the top of the handle body, an air inlet pipe is threadedly connected to the air inlet hole, a through hole is provided on the side of the handle body, a screw sleeve is threadedly sealed at one end of the through hole, a bushing is provided in the other end of the through hole, a valve ball is provided between the screw sleeve and the bushing, a groove is provided at the bottom of the screw sleeve, and a connecting groove is provided at the top of the bushing. The above document still has shortcomings. When in use, a transition block and a cylindrical block are provided on the piston, and a transition cavity and a cylindrical cavity are provided, so that the gas in the lower cavity is compressed during the movement of the piston, and the flow of the gas can be buffered on the transition cavity, so that the compressed air will not return to hit the piston. However, when the engraving air shovel in the above document is in use, the working frequency of the engraving shovel is fixed, which is not convenient for adjusting the working frequency of the engraving shovel according to actual use requirements. At the same time, when the engraving air shovel is in use, the extended length of the engraving shovel is relatively long, and it is usually necessary to manually support the position of the installation head to ensure the overall stability of the engraving air shovel. In the process of manually supporting the installation head, the hands of the staff are prone to contact with the engraving shovel, which is dangerous. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that it is inconvenient to adjust the working frequency of the carving shovel according to actual use requirements, and provides a carving air shovel with adjustable working frequency.

[0005] The utility model adopts a technical solution to solve its technical problems: this engraving air shovel with adjustable working frequency comprises a first cylinder and a second cylinder, the left side of the first cylinder is threadedly connected to the second cylinder, an adjusting mechanism is arranged inside the first cylinder, a mounting head is fixedly connected to the left end of the second cylinder, a protective mechanism is arranged on the left side of the mounting head, an engraving shovel is installed on the left side of the mounting head, a first sliding rod is fixedly connected to the inside of the first cylinder, and a sliding block is slidably connected to the outer wall of the first sliding rod.

[0006] For further improvement, the adjusting mechanism includes a screw, the outer walls at both ends of the screw are rotatably connected to the first cylinder through bearings, the end of the screw is fixedly connected to a rotating wheel, the outer wall of the screw is threadedly connected to a threaded block, the outer wall of the threaded block is fixedly connected to a slider, the surface of the threaded block is fixedly connected to a pin, the pin is slidably connected to a slide groove arranged in a cross bar, the end of the cross bar is fixedly connected to a baffle, the baffle is rotatably connected to the first cylinder through a pin shaft, the outer wall of the baffle is fitted with a ring, and the ring is fixedly connected to the inside of the first cylinder.

[0007] To be further improved, the protection mechanism includes a first connecting tube, the end of the first connecting tube is fixedly connected to the mounting head, the outer wall of the first connecting tube is threadedly connected to the second connecting tube, and the outer wall of the second connecting tube is fixedly connected to a rubber sleeve.

[0008] For further improvement, a pressure plate is rotatably connected to the top of the first cylinder via a pin shaft, and a button is installed on the top of the first cylinder.

[0009] For further improvement, a sleeve is fixedly connected to the upper surface of the first cylinder, a second sliding rod is slidably connected inside the sleeve, and an end of the second sliding rod is fixedly connected to the pressure plate.

[0010] For further improvement, a spring is arranged inside the sleeve, and two ends of the spring are fixedly connected to the sleeve and the second sliding rod respectively.

[0011] The beneficial effects of the utility model are as follows: in the utility model, through the cooperation between the screw, the rotating wheel, the threaded block, the pin rod, the cross bar, the baffle and the circular ring, the rotating wheel drives the screw to rotate, the screw drives the threaded block to move, the threaded block drives the pin rod to move, the pin rod drives the cross bar to move through the slide groove arranged in the cross bar, the cross bar drives the baffle to rotate, the inclination angle of the rotating rod changes, when the gas moves to the left through the circular ring, the inclination angle of the baffle is different, the amount of gas passing through is different, and thus the working frequency of the engraving shovel is different, which is convenient for adjusting the working frequency of the engraving shovel according to actual use requirements.

[0012] Through the cooperation between the first connecting tube, the second connecting tube and the rubber sleeve, when engraving, the staff presses the pressure plate with the right hand and supports the installation head with the left hand to ensure the accuracy of engraving on the end of the engraving shovel. When holding the installation head, the second connecting tube prevents the hand from contacting the engraving shovel. The second connecting tube can also be held by hand, and the hand contacts the second connecting tube through the rubber pad. The rubber sleeve protects the friction between the hand and the second connecting tube. In the process of holding the installation head, the staff's hand is not easy to contact the engraving shovel and cause danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the mechanism of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the connection between the screw rod, the threaded block and the pin rod in the utility model;

[0016] Figure 4 It is a structural schematic diagram of the connection between the middle pressure plate, the second sliding rod and the sleeve of the utility model;

[0017] Figure 5 It is a schematic structural diagram of the connection between the first connecting tube, the second connecting tube and the rubber sleeve in the utility model;

[0018] Figure 6 It is a schematic structural diagram of the connection between the mounting head, the carving shovel and the first connecting tube in the utility model.

[0019] Explanation of the reference numerals: 1. first cylinder, 2. second cylinder, 3. adjusting mechanism, 301. screw, 302. rotating wheel, 303. threaded block, 304. pin, 305. cross bar, 306. baffle, 307. ring, 4. protective mechanism, 401. first connecting cylinder, 402. second connecting cylinder, 403. rubber sleeve, 5. mounting head, 6. engraving shovel, 7. first sliding rod, 8. sliding block, 9. pressure plate, 10. button, 11. sleeve, 12. spring, 13. second sliding rod. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] See attached Figure 1-6 : In this embodiment, an engraving air shovel with adjustable working frequency includes a first cylinder 1 and a second cylinder 2. The left side of the first cylinder 1 is threadedly connected to the second cylinder 2. A sealing ring is provided at the connection between the first cylinder 1 and the second cylinder 2. An adjusting mechanism 3 is provided inside the first cylinder 1. The adjusting mechanism 3 adjusts the working frequency of the engraving shovel 6. A mounting head 5 is fixedly connected to the left end of the second cylinder 2. A protective mechanism 4 is provided on the left side of the mounting head 5. The protective mechanism 4 prevents the staff from touching the engraving shovel 6 with their hands.

[0022] A carving shovel 6 is installed on the left side of the mounting head 5, a first slide bar 7 is fixedly connected to the inside of the first cylinder 1, and a slider 8 is slidably connected to the outer wall of the first slide bar 7, and the slider 8 slides on the outer wall of the first slide bar 7, and a pressure plate 9 is rotatably connected to the top of the first cylinder 1 through a pin shaft, and a button 10 is installed above the first cylinder 1, and the button 10 controls the opening and closing of the carving air shovel, and a sleeve 11 is fixedly connected to the upper surface of the first cylinder 1, and a second slide bar 13 is slidably connected to the inside of the sleeve 11, and the second slide bar 13 slides inside the sleeve 11, and the end of the second slide bar 13 is fixedly connected to the pressure plate 9, and the pressure plate 9 moves with the second slide bar 13, and the sleeve 11 and the second slide bar 13 guide the movement of the pressure plate 9, and a spring 12 is arranged inside the sleeve 11. The model of the spring 12 is selected according to actual use requirements to meet the work needs, and the two ends of the spring 12 are respectively fixedly connected to the sleeve 11 and the second slide bar 13, and the spring 12 can drive the second slide bar 13 to move under the action of elasticity.

[0023] The adjusting mechanism 3 comprises a screw 301, a rotating wheel 302, a threaded block 303, a pin 304, a cross bar 305, a baffle 306 and a ring 307. The outer walls at both ends of the screw 301 are rotatably connected to the first cylinder 1 through bearings. The connection position between the screw 301 and the first cylinder 1 is sealed with bearings. The screw 301 and the first cylinder 1 are sealed so that no air leakage occurs. The end of the screw 301 is fixedly connected with a rotating wheel 302, which drives the screw 301 to rotate. The outer wall of the screw 301 is threadedly connected with a threaded block 303. The screw 301 drives the threaded block 303 to move. The outer wall of the threaded block 303 is fixedly connected to the slider 8. The threaded block 303 drives the slider 8 to move. The slider 8 and the first slide bar 7 guide the movement of the threaded block 303.

[0024] A pin 304 is fixedly connected to the surface of the threaded block 303, and the threaded block 303 drives the pin 304 to move. The pin 304 is slidably connected to the slide groove provided in the cross bar 305. The pin 304 drives the cross bar 305 to move through the slide groove provided in the cross bar 305. The end of the cross bar 305 is fixedly connected to the baffle 306. The cross bar 305 drives the baffle 306 to move. The baffle 306 is rotatably connected to the first cylinder 1 through the pin shaft. The outer wall of the baffle 306 is fitted with the ring 307. The baffle 306 and the ring 307 cooperate to block the inside of the first connecting cylinder 1. A rubber pad is provided at the contact position between the baffle 306 and the ring 307, and the ring 307 is fixedly connected to the inside of the first cylinder 1.

[0025] The rotating wheel 302 drives the screw 301 to rotate, the screw 301 drives the threaded block 303 to move, the threaded block 303 drives the pin 304 to move, the pin 304 drives the cross bar 305 to move through the slide groove set in the cross bar 305, the cross bar 305 drives the baffle 306 to rotate, the inclination angle of the rotating rod 306 changes, when the gas moves to the left through the ring 307, the inclination angle of the baffle 306 is different, the amount of gas passing through is different, and then the working frequency of the engraving shovel 6 is different, which is convenient for adjusting the working frequency of the engraving shovel 6 according to actual usage requirements.

[0026] The protection mechanism 4 includes a first connecting tube 401, a second connecting tube 402 and a rubber sleeve 403. The end of the first connecting tube 401 is fixedly connected to the mounting head 5. The outer wall of the first connecting tube 401 is threadedly connected to the second connecting tube 402. The first connecting tube 401 and the second connecting tube 402 can be separated. The outer wall of the second connecting tube 402 is fixedly connected with the rubber sleeve 403. The rubber sleeve 403 protects the friction between the hand and the second connecting tube 402.

[0027] When engraving, the staff presses the pressure plate 9 with the right hand and supports the installation head 5 with the left hand to ensure the accuracy of engraving on the end of the engraving shovel 6. When holding the installation head 5, the second connecting tube 402 prevents the hand from contacting the engraving shovel 6. The second connecting tube 402 can also be held by hand, and the hand contacts the second connecting tube 402 through the rubber pad 403. The rubber sleeve 403 protects the friction between the hand and the second connecting tube 402. During the process of holding the installation head 5, the staff's hand is not easy to contact the engraving shovel 6 and cause danger.

[0028] Working principle:

[0029] When using the engraving air shovel with adjustable working frequency to engrave an object, the second connecting tube 402 is screwed onto the outer wall of the first connecting tube 401, and the end of the second connecting tube 402 is fitted with the mounting head 5, the external air source is connected to the engraving air shovel, the pressing plate 9 is pressed, the pressing plate 9 drives the second slide bar 13 to move, the second slide bar 13 slides inside the sleeve 11 and compresses the spring 12, the pressing plate 9 contacts the button 10, and the engraving air shovel is started to engrave the object;

[0030] Protection stage:

[0031] When engraving, the staff member presses the pressing plate 9 with the right hand and supports the mounting head 5 with the left hand to ensure the accuracy of engraving at the end of the engraving shovel 6. When holding the mounting head 5, the second connecting tube 402 prevents the hand from contacting the engraving shovel 6. The second connecting tube 402 can also be held by hand, and the hand contacts the second connecting tube 402 through the rubber pad 403. The rubber sleeve 403 protects the friction between the hand and the second connecting tube 402 (the specific holding position can be selected according to the actual use situation). In the process of holding the mounting head 5, the staff member's hand is not easy to contact the engraving shovel 6 and cause danger;

[0032] Working frequency adjustment stage:

[0033] When the working frequency of the engraving air shovel needs to be adjusted according to actual usage requirements, the rotating wheel 302 is rotated, the rotating wheel 302 drives the screw 301 to rotate, the screw 301 drives the threaded block 303 to move, the threaded block 303 drives the pin 304 to move, the pin 304 drives the cross bar 305 to move through the slide groove set in the cross bar 305, the cross bar 305 drives the baffle 306 to rotate, the inclination angle of the rotating rod 306 changes, when the gas moves to the left through the ring 307, the inclination angle of the baffle 306 is different, the amount of gas passing through is different, and then the working frequency of the engraving shovel 6 is different, so that the working frequency of the engraving shovel 6 can be adjusted according to actual usage requirements.

[0034] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A carving air shovel with adjustable working frequency, comprising a first cylinder (1) and a second cylinder (2), wherein the left side of the first cylinder (1) is threadedly connected to the second cylinder (2), and wherein: An adjusting mechanism (3) is arranged inside the first cylinder (1); a mounting head (5) is fixedly connected to the left end of the second cylinder (2); a protective mechanism (4) is arranged on the left side of the mounting head (5); a carving shovel (6) is installed on the left side of the mounting head (5); a first sliding rod (7) is fixedly connected inside the first cylinder (1); and a sliding block (8) is slidably connected to the outer wall of the first sliding rod (7).

2. The engraving air shovel with adjustable working frequency according to claim 1 is characterized in that: The adjusting mechanism (3) comprises a screw rod (301), the outer walls of both ends of the screw rod (301) are rotatably connected to the first cylinder (1) via bearings, the ends of the screw rod (301) are fixedly connected to a rotating wheel (302), the outer wall of the screw rod (301) is threadedly connected to a threaded block (303), the outer wall of the threaded block (303) is fixedly connected to a slider (8), a pin rod (304) is fixedly connected to the surface of the threaded block (303), the pin rod (304) is slidably connected to a slide groove provided in a cross rod (305), the end of the cross rod (305) is fixedly connected to a baffle (306), the baffle (306) is rotatably connected to the first cylinder (1) via a pin shaft, the outer wall of the baffle (306) is in contact with a ring (307), and the ring (307) is fixedly connected to the inside of the first cylinder (1).

3. The engraving air shovel with adjustable working frequency according to claim 1 is characterized in that: The protection mechanism (4) comprises a first connecting tube (401), the end of the first connecting tube (401) being fixedly connected to the mounting head (5), the outer wall of the first connecting tube (401) being threadedly connected to the second connecting tube (402), and the outer wall of the second connecting tube (402) being fixedly connected to a rubber sleeve (403).

4. The engraving air shovel with adjustable working frequency according to claim 1 is characterized in that: A pressure plate (9) is rotatably connected to the top of the first cylinder (1) via a pin, and a button (10) is installed on the top of the first cylinder (1).

5. The engraving air shovel with adjustable working frequency according to claim 1 is characterized in that: A sleeve (11) is fixedly connected to the upper surface of the first cylinder (1), a second sliding rod (13) is slidably connected inside the sleeve (11), and an end of the second sliding rod (13) is fixedly connected to the pressing plate (9).

6. The engraving air shovel with adjustable working frequency according to claim 5 is characterized in that: A spring (12) is arranged inside the sleeve (11), and two ends of the spring (12) are fixedly connected to the sleeve (11) and the second sliding rod (13) respectively.

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