Pneumatic impact wrench
Technical Field
The invention belongs to the field of automobile accessories, and particularly relates to a pneumatic impact wrench.
Background
The pneumatic impact wrench is a device commonly used for automobile processing and maintenance, and is generally formed by combining a motor, a rotating device and a clamp, wherein the screw is rotated by the rotating device after the clamp and the screw are clamped.
Based on the findings of the inventor, the following defects mainly exist in the prior art, such as: because can adopt rivet and screw to press from both sides tightly fixedly in the automotive machining, and the outline on both tops all is difficult to distinguish for the hexagon profile, leads to utilizing impact wrench to rotate to add man-hour, easily with rivet mistake as the screw, and the welding nature of rivet makes impact wrench's rotating equipment overload operation easily, makes its and the inlaying groove's that anchor clamps are connected offset stress and surpass self material and bear the limit, and then leads to the spare part link broken.
It is therefore desirable to provide a pneumatic impact wrench.
Disclosure of Invention
The problem of above-mentioned technique because can adopt rivet and screw to press from both sides tightly fixedly in the automotive machining, and the outline at both top ends is the hexagon profile and is difficult to distinguish, leads to when utilizing impact wrench to rotate to add man-hour, easily mistake the rivet to regard as the screw, and the welding nature of rivet makes impact wrench's rotating equipment overload operation easily, makes its and the inlaying groove's that anchor clamps are connected offset stress and surpass self material and bear the limit, and then leads to the spare part link broken is solved in order to solve.
The invention relates to a pneumatic impact wrench, which is achieved by the following specific technical means: the structure of the electric motor cabinet comprises a clamp, a trigger, a handle and a motor cabinet, wherein the clamp is fixedly embedded right ahead of the motor cabinet, the trigger is movably clamped on the left side of the handle and is attached to the inner end face of the handle, and the handle is embedded and installed right below the motor cabinet; anchor clamps include clamping mouth, buffer, overload protection mechanism, transmission shaft, the clamping mouth is inlayed and is installed at buffer's left side end, overload protection mechanism is being connected in buffer's right side terminal surface laminating, overload protection mechanism is located the right side of clamping mouth, and is connecting the transmission shaft through welded connection, the transmission shaft is located buffer's right side.
Furthermore, the buffer device comprises an embedding mechanism, embedding and fixing rings, embedding and fixing blocks and anti-slip layers, wherein the embedding mechanism is uniformly arranged on the outer end face of the buffer device around the embedding and fixing rings, the embedding and fixing rings are located in the center of the buffer device, the left side and the right side of the embedding and fixing blocks are provided with the embedding and fixing blocks, the surfaces of the embedding and fixing blocks and the surface of the buffer device are attached to each other, the anti-slip layers wrap the outer end face of the buffer device, and the number of the embedding mechanisms is four.
Furthermore, inlay the mechanism and include connecting button, block rubber, first sliding tray, inlay solid strip, connect the inboard terminal surface of button activity block at first sliding tray, the laminating is inlayed at the medial terminal surface of first sliding tray to the block rubber, and is connected with the connecting button, the solid strip of inlaying is being installed to terminal surface wall under the first sliding tray outside, it is located the connecting button below to inlay solid strip, the outline of first sliding tray is circular-arcly.
Still further, the overload protection mechanism includes that fixed block, second inlay recess, spring, fixed tooth, connecting block, connecting plate, the fixed block is inlayed and is installed at the upper and lower both ends of connecting plate admittedly, the recess is located the left side of connecting plate to the second is inlayed, and is connected with it, the spring is located fixed tooth directly over and left and right sides welded connection the fixed block, fixed tooth evenly distributed is at the interior terminal surface of connecting plate, the connecting block is inlayed and is installed in the right side of connecting plate admittedly, the connecting plate is located fixed tooth both ends about, the fixed block is equipped with four groups with the spring, and evenly installs in the connecting plate outside.
Furthermore, the fixed teeth comprise rolling columns, buffer layers and trapezoidal blocks, the rolling columns are movably clamped on the left side of the upper ends of the fixed teeth, the buffer layers are embedded and attached to the lower sides of the rolling columns, the trapezoidal blocks are fixedly installed at the lower ends of the fixed teeth and attached to the connecting plate, and the trapezoidal blocks are designed to be wide on the left and narrow on the right.
Furthermore, the rolling column comprises connecting shafts, balls and second sliding grooves, the connecting shafts are symmetrically arranged on the left side and the right side of the rolling column and clamped with the inner end faces of the fixing teeth, the balls are embedded and clamped on the inner end faces of the second sliding grooves, the second sliding grooves are uniformly distributed on the outer end faces of the rolling column, and the diameters of the balls are slightly longer than the width of the second sliding grooves.
Compared with the prior art, the invention has the following beneficial effects:
1. when meeting the blind screw or rivet of welding, the torsion of transmission shaft and the barrier force of rivet intersect at inlaying the mechanism, utilize the extrusion of connecting button to promote and the pliability and the elasticity formation buffering of block rubber, make its whole slew velocity descend fast, can effectually avoid the problem of the damaged connecting end face of the equipment spare part that causes to the wrong processing of blind screw and rivet of welding.
2. When the left connecting plate receives great resistance, because the connecting plate on right side continuously rotates, can drive the fixed tooth on right side and utilize the buffer layer to extrude mutually on buffer layer and the fixed tooth on left side, utilize the elasticity of its inclination and spring, make whole upwards slow movement of fixed tooth to roll post department, make its surface contact ball produce the friction and drive the roll post and rotate through the connecting axle, the fixed tooth that makes the left and right sides at last breaks away from the block state and forms empty and walk, utilize this phenomenon, when meetting the rivet and carrying out the fault processing, produced part damage when can effectually guarantee the left and right sides torsion of connecting the terminal surface and exceed the material hardness.
Drawings
Fig. 1 is a schematic view of an overall structure of a pneumatic impact wrench according to the present invention.
Fig. 2 is a schematic structural view of a pneumatic impact wrench clamp according to the present invention.
Fig. 3 is a schematic structural diagram of a pneumatic impact wrench buffering device according to the present invention.
FIG. 4 is a schematic structural diagram of an insert mechanism of a pneumatic impact wrench according to the present invention.
Fig. 5 is a schematic structural view of a connection button of a pneumatic impact wrench according to the present invention.
Fig. 6 is a schematic structural diagram of an overload protection mechanism of a pneumatic impact wrench according to the present invention.
Fig. 7 is a schematic structural view of a fixing tooth of a pneumatic impact wrench according to the present invention.
Fig. 8 is a schematic structural view of a rolling column of a pneumatic impact wrench according to the present invention.
In the figure: a clamp-1, a trigger-2, a handle-3, a motor cabin-4, a clamping port-11, a buffer device-12, an overload protection mechanism-13, a transmission shaft-14, an embedding mechanism-121, an embedding ring-122, an embedding block-123, an anti-slip layer-124, a connecting button-1 a, a rubber block-1 b, a first sliding groove-1 c, an embedding fixing strip-1 d, a first embedding groove-1 a1, a connecting rod-1 a2, an embedding bead-1 a3, a fixing block-131, a second embedding groove-132, a spring-133, a fixing tooth-134, a connecting block-135, a connecting plate-136, a rolling column-4 a, a buffer layer-4 b, a trapezoidal block-4 c, a connecting shaft-4 a1, a ball-4 a2, a spring-133, a spring-4, a connecting block-134, a connecting block-135, a connecting plate-136, a connecting rod-4 a buffer layer-4 b, a trapezoidal block-4 c, a connecting shaft 1, a connecting rod-4 b, a connecting rod-1, a rubber block, Second slide groove-4 a 3.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1:
as shown in figures 1 to 5:
the invention provides a pneumatic impact wrench, which structurally comprises a clamp 1, a trigger 2, a handle 3 and a motor cabin 4, wherein the clamp 1 is fixedly embedded in the front of the motor cabin 4, the trigger 2 is movably clamped on the left side of the handle 3 and is attached to the inner end face of the handle, and the handle 3 is embedded and installed under the motor cabin 4; anchor clamps 1 is including clamping mouth 11, buffer 12, overload protection mechanism 13, transmission shaft 14, clamping mouth 11 inlays and installs the left side end at buffer 12, overload protection mechanism 13 is being connected in buffer 12's right side terminal surface laminating, overload protection mechanism 13 is located clamping mouth 11's right side, and is connecting transmission shaft 14 through welded connection, transmission shaft 14 is located buffer 12's right side.
Wherein, buffer 12 is including inlaying mechanism 121, inlaying solid ring 122, inlaying solid piece 123, skid resistant course 124, inlay mechanism 121 around inlaying solid ring 122 and evenly installing at buffer 12's outer terminal surface, it is located buffer 12's positive center to inlay solid ring 122, and the left and right sides is equipped with and inlays solid piece 123, it laminates mutually with buffer 12 surface to inlay solid piece 123, skid resistant course 124 parcel is at buffer 12's outside terminal surface, it is equipped with four to inlay mechanism 121, can make buffer 12 holistic atress unanimous in rotating, avoids certain too big or the undersize of torque to cause equipment to damage.
Wherein, inlay mechanism 121 including connect button 1a, block rubber 1b, first sliding tray 1c, inlay solid strip 1d, connect button 1a activity block at the medial surface of first sliding tray 1c, the laminating is inlayed at the medial surface of first sliding tray 1c to block rubber 1b, and is connected with connect button 1a, the solid strip 1d of inlaying is being installed to terminal surface wall under first sliding tray 1c outside, it is located to connect button 1a below to inlay solid strip 1d, the outline of first sliding tray 1c is circular-arcly, can be in the effectual direction that changes power of pivoted, reduces the consumption of moment of torsion power.
Wherein, the connection button 1a includes first inlay recess 1a1, connecting rod 1a2, embedded pearl 1a3, first inlay recess 1a1 is located the left and right sides of embedded pearl 1a3 outer terminal surface, and with first sliding tray 1c looks block, embedded pearl 1a3 is being installed to the upper and lower both sides of connecting rod 1a2 embedded solid, first inlay recess 1a1 runs through the left and right sides of embedded pearl 1a3 outer terminal surface, can guarantee that it can not skid and rotate when first sliding tray 1c removes, avoids the unable circumstances that removes of embedded pearl 1a 3.
The specific use mode and function of the embodiment are as follows:
when the device is used, a clamp 1 can be embedded on a screw nail after a handle 3 is gripped, then a trigger 2 is pulled to control a motor bin 4 to drive a transmission shaft 14 to rotate, so that the transmission shaft 14 drives an overload protection mechanism 13 and a buffer device 12 to transmit a clamping opening 11, the other end of a connecting button 1a in the buffer device 12 is embedded on the left end surface of the overload protection mechanism 13 in the rotating process, when the connecting button 1a rotates and moves under the torque force, the whole mechanism is pushed by a rubber block 1b attached to the inner end surface of a first sliding groove 1c, when a welded screw nail or rivet is encountered, the torque force of the transmission shaft 14 and the blocking force of the rivet are crossed at the embedding mechanism 121, the buffer is formed by the extrusion pushing of the connecting button 1a and the flexibility and elasticity of the rubber block 1b, the whole rotating speed is rapidly reduced, and the problem that the connecting end surfaces of equipment parts are subjected to the wrong processing of the welded screw nail and the rivet can be effectively avoided The problem of breakage.
Example 2:
as shown in fig. 6 to 8: the overload protection mechanism 13 includes a fixing block 131, a second embedding groove 132, a spring 133, a fixing tooth 134, a connecting block 135, and a connecting plate 136, wherein the fixing block 131 is embedded and installed at the upper and lower ends of the connecting plate 136, the second embedding groove 132 is installed at the left side of the connecting plate 136 and is connected to the connecting plate 136, the spring 133 is located right above the fixing tooth 134 and has the left and right sides welded to the fixing block 131, the fixing tooth 134 is uniformly distributed on the inner end surface of the connecting plate 136, the connecting block 135 is embedded and installed at the right side of the connecting plate 136, the connecting plate 136 is located at the left and right ends of the fixing tooth 134, the fixing block 131 and the spring 133 are provided with four sets, and are uniformly installed at the outer side of the connecting plate 136, and when the fixing tooth 134 is used for rotation, the whole stress of the connecting plate 136 can be effectively ensured to be uniform.
The fixed teeth 134 comprise rolling columns 4a, buffer layers 4b and trapezoidal blocks 4c, the rolling columns 4a are movably clamped on the left side of the upper ends of the fixed teeth 134, the buffer layers 4b are embedded and attached to the lower portions of the rolling columns 4a, the trapezoidal blocks 4c are fixedly installed at the lower ends of the fixed teeth 134 and attached to the connecting plates 136, the trapezoidal blocks 4c are wide at the left and narrow at the right, and when the trapezoidal blocks 4c receive rotating torque force, the torque force can be effectively transmitted to the connecting plates 136 through the right sides of the trapezoidal blocks 4c, and friction force is increased.
The rolling post 4a includes a connecting shaft 4a1, balls 4a2, and a second sliding groove 4a3, the connecting shaft 4a1 is symmetrically installed at the left and right sides of the rolling post 4a and is engaged with the inner end surface of the stationary teeth 134, the balls 4a2 are engaged with the inner end surface of the second sliding groove 4a3 in an embedded manner, the second sliding grooves 4a3 are uniformly distributed on the outer end surface of the rolling post 4a, the diameter of the balls 4a2 is slightly longer than the width of the second sliding groove 4a3, the surface friction force can be effectively reduced while the balls 4a2 roll, and the balls do not fall out of the second sliding groove 4a 3.
The specific use mode and function of the embodiment are as follows:
in the invention, when the rotating torque force is transmitted to the right connecting plate 136 through the connecting block 135, the fixed teeth 134 are tightly clamped together through the clamping fit of the fixed blocks 131 at the upper and lower ends and the spring 133, the left connecting plate 136 is driven to rotate through the embedding of the fixed teeth 134, when the left connecting plate 136 bears large resistance which is larger than the rotating force of the connecting block 135, the torques at the left and right sides are converged at the fixed teeth 134, the right connecting plate 136 continuously rotates to drive the right fixed teeth 134 to be extruded with the buffer layer 4b on the left fixed teeth 134 by using the buffer layer 4b, the fixed teeth 134 are integrally and slowly moved upwards to the rolling column 4a by using the inclination angle and the flexibility of the spring 133, the surface of the fixed teeth 134 is contacted with the ball 4a2 to generate friction to drive the rolling column 4a to rotate through the connecting shaft 4a1, and finally the fixed teeth 134 at the left and right sides are separated from the clamping state to form empty running, by utilizing the phenomenon, when the rivet is subjected to error processing, the damage of parts generated when the torsion on the left side and the right side of the connecting end surface exceeds the hardness of the material can be effectively ensured.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.