CN219702167U - Heavy breaking hammer with buffer gear - Google Patents

Abstract

The utility model discloses a heavy breaking hammer with a buffer mechanism, which comprises a middle cylinder body and a lower cylinder body which are connected with each other, wherein a hammer body is movably connected in the middle cylinder body, the bottom end of the hammer body is connected with the top end of a drill rod, the inner wall of the lower cylinder body is provided with a lower cylinder sleeve, the lower cylinder sleeve is movably connected with the drill rod, two flat pins are symmetrically arranged on the inner wall of the lower cylinder sleeve, two sliding grooves which are respectively matched with the flat pins are arranged on the side wall of the drill rod, namely, the flat pins are in sliding connection in the sliding grooves, a boss is arranged in the middle of the drill rod, a supporting ring is sleeved on the drill rod, a groove which is matched with the boss is arranged on the inner wall of the supporting ring, a combined buffer ring is also sleeved on the drill rod above the supporting ring, the combined buffer ring comprises a steel plate ring, rubber rings are respectively arranged on the top end surface and the bottom end surface of the steel plate ring, and the combined buffer ring is positioned between the supporting ring and the bottom end surface of the lower cylinder body.

Description

Heavy breaking hammer with buffer gear

Technical Field

The utility model relates to the field of engineering machinery, in particular to a heavy breaking hammer with a buffer mechanism.

Background

The breaking hammer is one kind of engineering machinery and has hydraulic cylinder to drive the hammer head to lift for beating. In the structure of the breaking hammer, a cylinder sleeve is arranged in a lower cylinder body, the cylinder sleeve is movably connected with a drill rod, the drill rod can do reciprocating linear motion along the axial direction of the drill rod relative to the cylinder sleeve under the drive of a hammer body, and a flat pin for limiting the motion stroke of the drill rod is also arranged in the cylinder sleeve. The mass of the breaking hammer is generally between 2 tons and 3 tons, and the flat pin is enough to resist the impact force of the drill rod on the breaking hammer when the breaking hammer works. However, in the heavy breaking hammer structure, since the mass of the heavy breaking hammer is more than 16 tons, the impact force transmitted to the flat pin by the drill rod is relatively large, the flat pin is easy to damage, and once the flat pin is damaged, the normal movement of the drill rod can be influenced, so that the breaking hammer cannot work.

Moreover, when the target object is crushed and hammered repeatedly, the relative motion between the drill rod and the cylinder body can continuously generate impact on the flat pin, and the impact can be transmitted to the cylinder body to influence the normal work of the cylinder body on one hand and can be transmitted to the cab on the other hand, so that operators feel uncomfortable.

There is thus a need for a method or apparatus that solves the above-mentioned problems.

Disclosure of Invention

The utility model aims to solve the technical problems, and provides the heavy breaking hammer with the buffer mechanism, which has the advantages of simple structure, ingenious design and reasonable layout, and can protect the flat pin from being damaged under the action of shearing stress between the drill rod and the lower cylinder body.

The technical scheme of the utility model is as follows: a heavy breaking hammer with buffer gear, characterized in that: the heavy breaking hammer comprises a middle cylinder body 1 and a lower cylinder body 2 which are connected with each other, wherein a hammer body 3 is movably connected in the middle cylinder body 1, the bottom end of the hammer body 3 is connected with the top end of a drill rod 4, a lower cylinder sleeve 5 is arranged on the inner wall of the lower cylinder body 2, the lower cylinder sleeve 5 is movably connected with the drill rod 4, two flat pins 6 are symmetrically arranged on the inner wall of the lower cylinder sleeve 5, two sliding grooves 7 which are respectively matched with the flat pins 6 are arranged on the side wall of the drill rod 4, the flat pins 6 are slidably connected in the sliding grooves 7, a boss 8 is arranged in the middle of the drill rod 4, a supporting ring 9 is sleeved on the drill rod 4, a groove 12 which is matched with the boss 8 is arranged on the inner wall of the supporting ring 9, a combined buffer ring is further sleeved on the drill rod 4 above the supporting ring 9, the combined buffer ring comprises a steel plate ring 10, rubber rings 11 are respectively arranged on the top end surface and the bottom end surface of the steel plate ring 10, and the combined buffer ring is positioned between the supporting ring 9 and the bottom end surface of the lower cylinder body 2.

Compared with the prior art, the utility model has the following advantages: the utility model relates to a heavy breaking hammer with a buffer mechanism, which has the advantages that the structure is simple, the design is ingenious, the layout is reasonable, the flat pin arranged in the traditional breaking hammer and used for limiting the travel of a drill rod can be subjected to the shearing stress between the drill rod and a cylinder body in the working process, when the whole mass of the breaking hammer is increased, the flat pin with the conventional structure can not bear the shearing stress which is increased along with the whole mass of the breaking hammer. The rubber ring can also absorb the impact force between the drill rod and the cylinder body in the working process, so that the impact force can be prevented from vibrating to influence the cylinder body or a driver, and meanwhile, the rubber ring is simple in manufacturing process and low in manufacturing cost, so that the rubber ring has various advantages, is particularly suitable for popularization and application in the field, and has very broad market prospect.

Drawings

Fig. 1 is a schematic structural diagram (first working state) of an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram (second working state) of the embodiment of the present utility model.

Fig. 3 is a schematic view of the construction of a shank portion in an embodiment of the utility model.

Detailed Description

Specific embodiments of the present utility model will be described below with reference to the accompanying drawings. As shown in fig. 1 to 3: the utility model provides a heavy quartering hammer with buffer gear, it includes interconnect's well cylinder body 1 and lower cylinder body 2, swing joint has hammer block 3 in the well cylinder body 1, the bottom of hammer block 3 is connected with the top of drill rod 4, the inner wall of lower cylinder body 2 is provided with down cylinder liner 5, be swing joint between lower cylinder liner 5 and the drill rod 4, be provided with two flat pins 6 on the inner wall of lower cylinder liner 5 symmetrically, then be provided with on the lateral wall of drill rod 4 two respectively with flat pin 6 assorted spout 7, flat pin 6 sliding connection in spout 7, the middle part of drill rod 4 is provided with boss 8, cup jointed supporting ring 9 on drill rod 4, be provided with on the inner wall of supporting ring 9 with boss 8 assorted recess 12, still cup jointed combination formula buffer ring on the drill rod 4 of supporting ring 9 top, combination buffer ring includes steel sheet ring 10, all is provided with rubber ring 11 on steel sheet ring 10's top and bottom terminal surface, just combination buffer ring 9 is located between the bottom of supporting ring 2 and the bottom of supporting ring.

The working process of the heavy breaking hammer with the buffer mechanism provided by the embodiment of the utility model is as follows: under the drive of a hydraulic system, a piston arranged in the middle cylinder body 1 drives the hammer body 3 to lift, after the hammer body 3 is lifted to the maximum stroke, the hydraulic system releases pressure, the hammer body 3 rapidly drops down to hit the drill rod 4 under the action of dead weight and nitrogen, and the bottom end of the drill rod 4 hits the target ground or rock to crush the target ground or rock; in the non-working state, the bottom end of the drill rod 4 is firstly contacted with the ground in the process of placing the breaking hammer on the ground, and the hydraulic system does not work at this time, so that under the action of dead weight, the middle cylinder body 1 and the lower cylinder body 2 which are integrated move towards the ground, namely the lower cylinder body 2 moves relative to the drill rod 4, when the bottom end surface of the lower cylinder body 2 is contacted with the rubber ring 11 positioned above, the mass of the lower cylinder body 2 is transferred to the combined buffer ring, the rubber ring 11 positioned below in the combined buffer ring is pressed on the supporting ring 9, and the grooves 12 on the inner wall of the supporting ring 9 are buckled on the boss 8 arranged outside the drill rod 4, so that in the state, the mass of the middle cylinder body 1 and the lower cylinder body 2 is actually supported by the drill rod 4, so that the mass of the middle cylinder body 1 and the lower cylinder body 2 is pressed on the flat pin 6 to damage the flat pin 6, thereby achieving the purpose of prolonging the service life of the breaking hammer, and the purpose of effectively absorbing the impact of the cylinder body or the cab in the working process, and simultaneously improving the comfort of the driver.

Claims (1)

1. A heavy breaking hammer with buffer gear, characterized in that: the heavy breaking hammer comprises a middle cylinder body (1) and a lower cylinder body (2) which are connected with each other, wherein a hammer body (3) is movably connected in the middle cylinder body (1), the bottom end of the hammer body (3) is connected with the top end of a drill rod (4), a lower cylinder sleeve (5) is arranged on the inner wall of the lower cylinder body (2), the lower cylinder sleeve (5) is movably connected with the drill rod (4), two flat pins (6) are symmetrically arranged on the inner wall of the lower cylinder sleeve (5), two sliding grooves (7) which are respectively matched with the flat pins (6) are arranged on the side wall of the drill rod (4), namely, the flat pins (6) are slidably connected in the sliding grooves (7),

the middle part of drill rod (4) is provided with boss (8), has cup jointed holding ring (9) on drill rod (4), be provided with on the inner wall of holding ring (9) with boss (8) assorted recess (12), still cup jointed combination formula buffer ring on drill rod (4) of holding ring (9) top, combination formula buffer ring includes steel sheet ring (10), all is provided with rubber ring (11) on the top end face and the bottom end face of steel sheet ring (10), just combination formula buffer ring is located between the bottom end face of holding ring (9) and lower cylinder body (2).