Handheld pneumatic rock drill

Abstract

The handheld pneumatic rock drill comprises a rock drill body and a handheld handle installed at the upper end of the rock drill body, the handheld handle comprises a left handle body and a right handle body, the inner side ends of the left handle body and the right handle body are hinged to an installation base formed in the middle of the upper end of the rock drill body, and the middle sections of the left handle body and the right handle body are connected with the rock drill body through elastic pieces respectively. Under the limiting action of the elastic piece, the left handle and the right handle can turn downwards in a limited mode in the vertical plane around the hinged shaft. In the working state, the handheld handle held by an operator can overturn in a reciprocating mode in the vertical plane around the hinge shaft, so that the buffering effect is achieved, the impact force of the rock drill body can be prevented from directly acting on the human body, the labor intensity borne by the operator is effectively relieved, and the probability of fatigue of the two hands and the two arms of the operator and vibration damage is reduced.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of rock drilling equipment, in particular to a handheld pneumatic rock drill. Background Art

[0002] A rock drill is a tool used to directly mine stone. It is used to drill holes in the rock layer to place explosives for blasting, thereby completing the mining of stone or other stone projects. In addition, a rock drill can also be used as a destroyer to break hard layers such as concrete. A handheld rock drill is a rock drill that is held by hand and drills holes by applying axial thrust due to the machine's gravity or manpower.

[0003] The handle of the handheld pneumatic rock drill disclosed in the prior art is rigidly connected to the rock drill body. Due to the lack of effective buffering, the impact force of the rock drill body directly acts on the human body during operation, causing the operator to bear great labor intensity, easily causing fatigue of the hands and arms, and even vibration injuries.

[0004] Therefore, a handheld pneumatic rock drill with a buffering effect and capable of reducing human body vibration to a certain extent is needed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a handheld pneumatic rock drill.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model comprises a rock drill body and a hand handle mounted on the upper end thereof, wherein the hand handle comprises a left handle and a right handle, the inner ends of the two handles are hinged to a mounting seat formed in the middle of the upper end of the rock drill body, and the middle sections of the two handles are respectively connected to the rock drill body via elastic members, and under the limiting action of the elastic members, the left handle and the right handle can respectively flip downward to a limited extent in a vertical plane around the hinge axis.

[0008] The convex platform formed on the inner end of the left handle is inserted into the concave groove formed on the inner end of the right handle, the end face of the convex platform is set as an upward slope, and the end face of the concave groove is set as a downward slope. The upward slope surface cooperates with the downward slope surface to limit the left handle and the right handle from folding upward.

[0009] The minimum value α of the upper angle α between the left handle and the right handle min Greater than or equal to 150° and less than or equal to 210°.

[0010] The outer ends of the left handle and the right handle are both extended outward to form a grip, and the grip is bent upward.

[0011] The handle is in the shape of a hollow cylinder, and an anti-slip sleeve is arranged on the outer side thereof.

[0012] The two elastic members are symmetrically distributed on both sides of the mounting seat, one of which is clamped between the rock drill body and the left handle, and the other is clamped between the rock drill body and the right handle, and the elastic members are both in a compressed state.

[0013] The top surface of the rock drill body is protruded with two limit seats, which are symmetrically distributed on both sides of the mounting seat, and the lower end of the elastic member is inserted into the limit seat.

[0014] Limiting grooves are formed on the lower sides of the left handle and the right handle, and the limiting grooves are directly opposite to the limiting seats, and the upper ends of the elastic members are inserted into the limiting grooves.

[0015] The handheld pneumatic rock drill also includes a cover shell which is arranged above the rock drill body and is used to wrap the left handle, the right handle and the elastic member in its cavity, and the grip passes through the cover shell.

[0016] The cover shell is composed of two half shells assembled together.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] In the working state, the hand handle held by the operator can be flipped back and forth around the hinge axis in the vertical plane, thereby producing a buffering effect, thereby preventing the impact force of the rock drill body from directly acting on the human body, thereby effectively reducing the labor intensity borne by the operator and reducing the probability of fatigue of the operator's hands and arms and vibration injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of a handheld pneumatic rock drill;

[0020] Figure 2 is a front view schematic diagram of a handheld pneumatic rock drill (the housing is not shown);

[0021] Figure 3 is a schematic side view of a handheld pneumatic rock drill (the housing is not shown);

[0022] Figure 4 yes Figure 3 A partial schematic diagram of the AA section (housing not shown; state one);

[0023] Figure 5 yes Figure 3 A partial schematic diagram of the AA section (the housing is not shown; state 2);

[0024] Figure 6 1 is a top view of a handheld pneumatic rock drill (the housing is not shown).

[0025] The reference numerals in the figure indicate: 1. rock drill body; 11. mounting seat; 12. limiting seat; 13. pin shaft; 2. hand handle; 21. left handle; 211. convex platform; 212. upslope surface; 22. right handle; 221. concave groove; 222. downslope surface; 23. grip; 24. anti-slip sleeve; 25. limiting groove; 3. elastic member; 4. cover shell; 41. half shell; 42. through hole. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Example

[0028] like Figures 1 to 6 As shown, in this embodiment, the rock drill body 1 and the hand handle 2 installed at the upper end thereof are included, and the hand handle 2 includes a left handle 21 and a right handle 22, the inner ends of both handles are hinged to the mounting seat 11 formed in the middle of the upper end of the rock drill body 1, and the middle sections of the two handles are respectively connected to the rock drill body 1 through the elastic member 3. Under the limiting action of the elastic member 3, the left handle 21 and the right handle 22 can be respectively turned downward to a limited extent in the vertical plane around the hinge axis. The lower end of the rock drill body 1 is equipped with a drill for striking the external rock mass. In the working state, the recoil force generated by the collision between the drill and the external rock mass causes the rock drill body 1 to move upward. Due to inertia, the left handle 21 and the right handle 22 turn downward around the hinge axis and squeeze the elastic member 3. When the kinetic energy of the rock drill body 1 is converted into gravitational potential energy and elastic potential energy, the rock drill body 1 will move downward under the combined action of gravity and elastic force. At this time, the elastic potential energy of the elastic member 3 is released, pushing the left handle 21 and the right handle 22 to turn upward around the hinge axis and reset; and so on. In the working state, the hand handle 2 held by the operator can turn back and forth in the vertical plane around the hinge axis, thereby generating a buffering effect, so that the impact force of the rock drill body 1 can be prevented from directly acting on the human body, thereby effectively reducing the labor intensity borne by the operator, and reducing the probability of fatigue of the operator's hands and arms and vibration damage.

[0029] In this embodiment, the convex platform 211 formed on the inner side of the left handle 21 is inserted into the concave groove 221 formed on the inner side of the right handle 22. The end surface of the convex platform 211 is set as an upward slope surface 212, and the end surface of the concave groove 221 is set as a downward slope surface 222. The upward slope surface 212 and the downward slope surface 222 cooperate to limit the left handle 21 and the right handle 22 from folding upward. The minimum value α of the upper side angle α between the left handle 21 and the right handle 22 min is 180° (in other embodiments, α minAny value between 150° and 210° can be taken). The concave groove 221 is set in the mounting seat 11, and the convex platform 211 is inserted in the concave groove 221. The three are penetrated by the same pin shaft 13 to form a hinge. The end surface of the convex platform 211 facing the right handle 22 is set as an upslope surface 212, and the end surface of the concave groove 221 facing the left handle 21 is set as a downslope surface 222. The upslope surface 212 is opposite to the downslope surface 222, and the upper sections of the two form a chamfer. When the left handle 21 and the right handle 22 are turned down, the upslope surface 212 is separated from the downslope surface 222. When the left handle 21 and the right handle 22 are turned up to the minimum value α of the upper side angle α between the two. min When the angle of the upper slope surface 212 and the lower slope surface 222 is 180°, the upper chamfer of the upper slope surface 212 and the upper chamfer of the lower slope surface 222 counteract each other, thereby generating a limiting effect. At this time, the left handle 21 and the right handle 22 cannot continue to flip upward. After the kinetic energy of the rock drill body 1 is converted into gravitational potential energy and elastic potential energy, the rock drill body 1 will move downward under the combined action of gravity and elastic force. At this time, the elastic potential energy of the elastic member 3 is released, pushing the left handle 21 and the right handle 22 to flip upward around the hinge axis and reset. By setting the upper slope surface 212 and the lower slope surface 222, the upward flip angle of the left handle 21 and the right handle 22 can be effectively limited, thereby avoiding the collision of the operator's hands due to excessive flipping of the two. In addition, due to the limiting effect of the upper slope surface 212 and the lower slope surface 222, the operator can directly use the handheld handle 2 to pull upward when moving the handheld pneumatic rock drill, thereby simplifying the operation.

[0030] In this embodiment, the outer ends of the left handle 21 and the right handle 22 are extended outward to form a grip 23, and the grip 23 is bent upward. The grip 23 is in the shape of a hollow cylinder, and an anti-slip sleeve 24 is installed on the outer side. During the operation, the operator holds the anti-slip sleeve 24 on the grip 23. The anti-slip sleeve 24 can be made of elastic rubber. When extrusion occurs, the anti-slip sleeve 24 can be elastically deformed to a certain extent, thereby further producing a buffering effect. At the same time, by providing the grip 23 that is bent upward relative to the left handle 21 and the right handle 22, the operator's grip is more ergonomic, thereby reducing the labor intensity borne by the operator.

[0031] In this embodiment, two elastic members 3 are symmetrically distributed on both sides of the mounting seat 11, one of which is clamped between the rock drill body 1 and the left handle 21, and the other is clamped between the rock drill body 1 and the right handle 22, and the elastic members 3 are all in a compressed state. Two limit seats 12 are protruding from the top surface of the rock drill body 1, and the two limit seats 12 are symmetrically distributed on both sides of the mounting seat 11, and the lower end of the elastic member 3 is inserted into the limit seat 12. The lower sides of the left handle 21 and the right handle 22 are both formed with limit grooves 25, and the limit grooves 25 are directly opposite to the limit seat 12, and the upper end of the elastic member 3 is inserted into the limit groove 25. Specifically, the elastic member 3 is configured as a spring, and the limit seat 12 is cylindrical. The inner diameters of the limit seat 12 and the limit groove 25 are equal to or slightly larger than the outer diameter of the spring, and the two together limit the lateral movement of the elastic member 3.

[0032] In this embodiment, the handheld pneumatic rock drill also includes a cover shell 4 arranged above the rock drill body 1, which is used to wrap the left handle 21, the right handle 22 and the elastic member 3 in its cavity, and the grip 23 passes through the cover shell 4. The cover shell 4 is composed of two half shells 41 assembled together. Specifically, both sides of the cover shell 4 are formed with through holes 42 for the grip 23 to pass through, and the through holes 42 are in the shape of vertical strips to prevent the grip 23 from turning over and colliding with the cover shell 4 during work. By setting the cover shell 4, the left handle 21, the right handle 22 and the elastic member 3 can be semi-sealed in their cavities, so that external debris and rainwater can be isolated to a certain extent, and the service life of the equipment can be extended. At the same time, in order to facilitate maintenance and cleaning, the cover shell 4 is set as an assembly, which is composed of two half shells 41 connected by bolts. When the left handle 21, the right handle 22 and the elastic member 3 need to be repaired and cleaned, it is only necessary to disassemble the half shell 41.

[0033] Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A handheld pneumatic rock drill, comprising a rock drill body (1) and a hand handle (2) mounted on the upper end thereof, characterized in that: The hand-held handle (2) comprises a left handle (21) and a right handle (22), the inner ends of which are both hinged to a mounting seat (11) formed in the middle of the upper end of the rock drill body (1), and the middle sections of which are respectively connected to the rock drill body (1) via an elastic member (3). Under the limiting action of the elastic member (3), the left handle (21) and the right handle (22) can respectively flip downward to a limited extent in a vertical plane around a hinge axis.

2. The handheld pneumatic rock drill according to claim 1, characterized in that: A convex platform (211) formed on the inner side end of the left handle (21) is inserted into a concave groove (221) formed on the inner side end of the right handle (22); the end surface of the convex platform (211) is arranged as an upward slope surface (212), and the end surface of the concave groove (221) is arranged as a downward slope surface (222); the upward slope surface (212) cooperates with the downward slope surface (222) to limit the left handle (21) and the right handle (22) from folding upward.

3. The handheld pneumatic rock drill according to claim 2, characterized in that: The minimum value α of the upper angle α between the left handle (21) and the right handle (22) min Greater than or equal to 150° and less than or equal to 210°.

4. The handheld pneumatic rock drill according to claim 3, characterized in that: The outer ends of the left handle (21) and the right handle (22) are both extended outwards to form a grip (23), and the grip (23) is bent upwards.

5. The handheld pneumatic rock drill according to claim 4, characterized in that: The handle (23) is in the shape of a hollow cylinder, and an anti-slip sleeve (24) is arranged on the outer side thereof.

6. The handheld pneumatic rock drill according to claim 2, characterized in that: The two elastic members (3) are symmetrically distributed on both sides of the mounting seat (11), one of which is clamped between the rock drill body (1) and the left handle (21), and the other is clamped between the rock drill body (1) and the right handle (22), and the elastic members (3) are both in a compressed state.

7. The handheld pneumatic rock drill according to claim 6, characterized in that: The top surface of the rock drill body (1) is protruded with two limit seats (12), the two limit seats (12) are symmetrically distributed on both sides of the mounting seat (11), and the lower end of the elastic member (3) is inserted into the limit seat (12).

8. The handheld pneumatic rock drill according to claim 7, characterized in that: The lower sides of the left handle (21) and the right handle (22) are both formed with limiting grooves (25), the limiting grooves (25) are directly opposite to the limiting seat (12), and the upper end of the elastic member (3) is inserted into the limiting grooves (25).

9. The handheld pneumatic rock drill according to claim 4, characterized in that: The handheld pneumatic rock drill further comprises a cover (4) arranged above the rock drill body (1) and used to enclose the left handle (21), the right handle (22) and the elastic member (3) in its cavity, and the grip (23) extends out of the cover (4).

10. The handheld pneumatic rock drill according to claim 9, characterized in that: The cover shell (4) is composed of two half shells (41) assembled together.

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