A nut-loosening-proof excavator hammer lower cylinder

Abstract

The utility model provides a nut-proof loosening type excavator breaker hammer lower cylinder body, which relates to the technical field of breaker hammer lower cylinder bodies. The utility model comprises a cylinder body, a notch is provided at one end of the cylinder body, a plurality of connecting grooves are provided on the outer surface of the cylinder body, a fastening device is arranged inside the notch, the fastening device comprises a groove ring, clamping grooves are provided on both sides of the groove ring, sliding grooves are provided on both sides of the inner wall of the notch, a spring is arranged at one end of the slider, and a threaded hole is provided at the bottom end of the inner wall of the sliding groove. The utility model inserts the groove ring into the inner wall of the notch by arranging the fastening device, fixes the groove ring to the inner wall of the notch by bolts, and then inserts the inner sleeve into the interior of the groove ring. When the breaker hammer is working, the angle between the inner sleeve and the breaker hammer can be further limited by the groove ring, the inner sleeve is fastened and the wear of the outer surface of the inner sleeve is reduced, and the damage of the inner sleeve is avoided as much as possible to affect the overall use effect of the breaker hammer.

Description

Technical Field

[0001] The utility model relates to the technical field of a breaker hammer lower cylinder, in particular to a nut anti-loosening type excavator breaker hammer lower cylinder. Background Art

[0002] The breaker hammer for excavator is installed on the part of the excavator or loader where the bucket is installed or loaded. It is used to break stones, rocks, etc. The breaker hammer is connected and works with the arm of the excavator through the combination of the upper cylinder body, the middle cylinder body and the lower cylinder body.

[0003] When the hammer body of the breaker is connected to the lower cylinder, an inner sleeve is installed between the connection of the hammer body and the lower cylinder. During the use of the breaker, the inner sleeve may be damaged due to the vibration of the hammer head and frequent empty hits, affecting the connection stability between the inner sleeve and the lower cylinder and the overall effect of the breaker. Utility Model Content

[0004] The utility model aims to solve the problem that during the use of the breaker hammer, the inner sleeve may be damaged due to the vibration of the hammer head and frequent empty hits, thereby affecting the connection stability between the inner sleeve and the lower cylinder body and the overall effect of the breaker hammer when in use, and proposes a nut-proof loosening type excavator breaker hammer lower cylinder body.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nut-proof loosening type excavator breaker lower cylinder body, including a cylinder body, a notch is opened at one end of the cylinder body, a plurality of connecting grooves are opened on the outer surface of the cylinder body, a fastening device is arranged inside the notch, the fastening device includes a groove ring, a clamping groove is opened on both sides of the groove ring, a slide groove is opened on both sides of the inner wall of the notch, a slider is slidably connected to the inner wall of the slide groove, a spring is arranged at one end of the slider, the two ends of the spring are respectively fixedly connected to one end of the slider and one end of the inner wall of the slide groove, a threaded hole is opened at the bottom end of the inner wall of the slide groove, and a bolt is slidably inserted into the inner wall of the slider.

[0006] The effect achieved by the above components is: when installing the inner sleeve of the lower cylinder body, the groove ring can be inserted into the inner wall of the groove first. When one end of the groove ring contacts one end of the two sliders, it will push the slider to slide inward on the inner wall of the slide groove and compress the spring. Continue to push the groove ring to align the grooves at both ends of the groove ring with the slide groove. Then the spring will return to its original state and push the slider to move outward to clamp the slider in the groove. Then use the bolt to insert through the slider from the top of the lower cylinder body, turn the bolt to make the bolt and the inner wall of the threaded hole threadedly connected to further fix the position of the slider, fix the groove ring on the inner wall of the groove, and then insert the inner sleeve into the groove ring. When the breaker is working, the groove ring can further limit the angle between the inner sleeve and the breaker, tighten the inner sleeve and reduce the wear on the outer surface of the inner sleeve, so as to avoid damage to the inner sleeve as much as possible to affect the overall use effect of the breaker.

[0007] Preferably, the size of the slider at one end close to the slot is smaller than that at one end away from the slot, and the edge of the slider at one end close to the slot is arc-shaped.

[0008] The effect achieved by the above components is that when the groove ring is inserted into the groove opening, the groove ring surface contacts the arc edge of the slider, pushing the slider to move on the inner wall of the slide groove more conveniently and not easy to get stuck.

[0009] Preferably, one end of the inner wall of the slide groove is fixedly connected to a round rod, and the inner wall of the sliding block slides on the outer surface of the round rod.

[0010] The effect achieved by the above components is that the slider slides on the outer surface of the round rod when moving, and the angle between the slider and the slide groove can be further limited by the round rod, thereby avoiding the slider from being deflected as much as possible.

[0011] Preferably, a positioning ring is fixedly connected to the inner wall of the cylinder body, and the inner diameter of the positioning ring is slightly larger than the diameter of the bolt.

[0012] The effect achieved by the above components is that when the bolt is inserted into the threaded hole, the bolt will pass through the inside of the positioning ring, and the positioning ring can limit the angle of the bolt, making it easier to insert the bolt through the slider into the positioning hole.

[0013] Preferably, two rectangular grooves are provided on one side of the cylinder body, and the two rectangular grooves are respectively located at the outermost edges of the inner wall of the groove.

[0014] The effect achieved by the above components is that when the groove ring needs to be taken out, the groove ring can be pinched at the rectangular groove on the outer surface of the cylinder body to make it more convenient to take out the groove ring.

[0015] Preferably, an auxiliary device is provided at the top of the cylinder body, and the auxiliary device includes an insertion rod, one end of which is fixedly connected to an elastic metal rod, and two circular grooves are provided at the top of the cylinder body, and two slots are provided on one side of the inner wall of the circular groove.

[0016] The effect achieved by the above components is: after using bolts to further fix the position of the slider inside the slide groove, one end of the insertion rod can be inserted into the circular groove first, and then the elastic metal rod is bent and the insertion rod is pushed into the slot. The elastic metal rod is loosened so that one end of the elastic metal rod is against the end of the circular groove away from the slot, and the elastic metal rod is fixed to the top of the bolt, and the position of the bolt inside the cylinder body is further fixed, so as to avoid the bolt loosening during the use of the breaker as much as possible.

[0017] Preferably, one end of the insertion rod is fixedly connected to two oblique rods, and one end of the two oblique rods away from the insertion rod is fixedly connected to two sides of the elastic metal rod.

[0018] The effect achieved by the above components is that the connection between the insertion rod and the elastic metal rod can be further reinforced by arranging the oblique rod, thereby avoiding the connection between the elastic metal rod and the insertion rod from being broken due to stress as much as possible.

[0019] Preferably, a groove is formed on the outer surface of the elastic metal rod, and the groove is located at the bottom end of the elastic metal rod.

[0020] The effect achieved by the above components is that after the elastic metal rod is clamped inside the circular groove, the elastic metal rod can be bent upward at the groove to more conveniently control the deformation of the elastic metal rod to pull the insertion rod out of the slot.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] In the utility model, by arranging a fastening device, the groove ring is inserted into the inner wall of the groove, and the groove ring is fixed to the inner wall of the groove by bolts, and then the inner sleeve is inserted into the interior of the groove ring. When the breaker hammer is working, the groove ring can further limit the angle between the inner sleeve and the breaker hammer, tighten the inner sleeve and reduce the wear of the outer surface of the inner sleeve, so as to avoid damage to the inner sleeve to affect the overall use effect of the breaker hammer as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the cylinder body of the utility model;

[0025] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the cylinder body of the utility model;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the groove ring of the utility model;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the cylinder body of the utility model;

[0028] Figure 6 For this utility model Figure 5 Schematic diagram of the partially enlarged three-dimensional structure at point A.

[0029] Legend: 1. Cylinder body; 2. Fastening device; 3. Auxiliary device; 4. Notch; 5. Connecting groove; 21. Slide groove; 22. Slider; 23. Spring; 24. Groove ring; 25. Slot; 26. Threaded hole; 27. Bolt; 28. Round rod; 29. ​​Positioning ring; 210. Rectangular groove; 31. Round groove; 32. Slot; 33. Insert rod; 34. Elastic metal rod; 35. Groove; 36. Diagonal rod. DETAILED DESCRIPTION

[0030] Embodiment 1, as Figure 1-4 As shown, a nut-proof loosening type excavator breaker lower cylinder comprises a cylinder 1, a notch 4 is provided at one end of the cylinder 1, a plurality of connecting grooves 5 are provided on the outer surface of the cylinder 1, a fastening device 2 is arranged inside the notch 4, the fastening device 2 comprises a groove ring 24, a clamping groove 25 is provided on both sides of the groove ring 24, a slide groove 21 is provided on both sides of the inner wall of the notch 4, a slider 22 is slidably connected to the inner wall of the slide groove 21, a spring 23 is provided at one end of the slider 22, and the two ends of the spring 23 are respectively fixedly connected to one end of the slider 22 and one end of the inner wall of the slide groove 21, a threaded hole 26 is provided at the bottom end of the inner wall of the slide groove 21, a bolt 27 is slidably inserted into the inner wall of the slider 22, and when the inner sleeve of the lower cylinder 1 is installed, the groove ring 24 can be inserted into the inner wall of the notch 4 first, and when one end of the groove ring 24 is connected to the two sliders 22 When one end contacts, it will push the slider 22 to slide inward on the inner wall of the slide groove 21 and compress the spring 23, and continue to push the groove ring 24 to align the grooves 25 at both ends of the groove ring 24 with the slide groove 21. Then the spring 23 will return to its original state and push the slider 22 to move outward to clamp the slider 22 in the groove 25. Then use the bolt 27 to insert through the slider 22 from the top of the lower cylinder body 1, and turn the bolt 27 to make the bolt 27 threadedly connected with the inner wall of the threaded hole 26 to further fix the position of the slider 22, fix the groove ring 24 on the inner wall of the notch 4, and then insert the inner sleeve into the groove ring 24. When the breaker is working, the groove ring 24 can further limit the angle between the inner sleeve and the breaker, tighten the inner sleeve and reduce the wear on the outer surface of the inner sleeve, so as to avoid damage to the inner sleeve as much as possible to affect the overall use effect of the breaker.

[0031] Reference Figure 1-4 As shown, in the present embodiment: the size of the slider 22 at one end close to the slot 4 is smaller than the size at the end away from the slot 4, the edge of the slider 22 at one end close to the slot 4 is arc-shaped, and when the groove ring 24 is inserted into the slot 4, the surface of the groove ring 24 contacts the arc-shaped edge of the slider 22, pushing the slider 22 to move on the inner wall of the slide groove 21 is more convenient and not easy to get stuck, and a round rod 28 is fixedly connected to one end of the inner wall of the slide groove 21, and the inner wall of the slider 22 slides on the outer surface of the round rod 28. When the slider 22 moves, it will slide on the outer surface of the round rod 28, and the angle between the slider 22 and the slide groove 21 can be further limited by the round rod 28, so as to avoid the angle of the slider 22 from being deflected as much as possible.

[0032] Reference Figure 1-4As shown, in this embodiment: a positioning ring 29 is fixedly connected to the inner wall of the cylinder body 1, and the inner diameter of the positioning ring 29 is slightly larger than the diameter of the bolt 27. When the bolt 27 is inserted into the threaded hole 26, the bolt 27 will pass through the inside of the positioning ring 29. The positioning ring 29 can limit the angle of the bolt 27, so that the bolt 27 can be inserted into the positioning hole through the slider 22. Two rectangular grooves 210 are provided on one side of the cylinder body 1. The two rectangular grooves 210 are respectively located at the outermost edges of the inner wall of the notch 4. When the groove ring 24 needs to be taken out, it is more convenient to pinch the groove ring 24 at the rectangular groove 210 on the outer surface of the cylinder body 1 to take out the groove ring 24.

[0033] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in the present embodiment: an auxiliary device 3 is provided at the top of the cylinder body 1, the auxiliary device 3 includes an insert rod 33, one end of the insert rod 33 is fixedly connected to an elastic metal rod 34, two circular grooves 31 are provided at the top of the cylinder body 1, and two slots 32 are provided on one side of the inner wall of the circular groove 31. After the position of the slider 22 inside the slide groove 21 is further fixed by using the bolt 27, one end of the insert rod 33 can be inserted into the circular groove 31 first, and then the elastic metal rod 34 is bent and the insert rod 33 is pushed into the slot 32. The elastic metal rod 34 is loosened so that one end of the elastic metal rod 34 is against the end of the circular groove 31 away from the slot 32, and the elastic metal rod 34 is fixed to the top of the bolt 27, so as to further fix the position of the bolt 27 inside the cylinder body 1 and avoid the bolt 27 from loosening during the use of the breaker.

[0034] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in the present embodiment: one end of the insertion rod 33 is fixedly connected to two inclined rods 36, and the two inclined rods 36 are fixedly connected to the two sides of the elastic metal rod 34 at one end away from the insertion rod 33. By providing the inclined rods 36, the connection between the insertion rod 33 and the elastic metal rod 34 can be further reinforced to avoid the connection between the elastic metal rod 34 and the insertion rod 33 from being broken due to stress as much as possible. A groove 35 is provided on the outer surface of the elastic metal rod 34, and the groove 35 is located at the bottom end of the elastic metal rod 34. After the elastic metal rod 34 is stuck in the inside of the circular groove 31, the elastic metal rod 34 is bent upward at the groove 35, which can more conveniently control the deformation of the elastic metal rod 34 to pull the insertion rod 33 out of the inside of the slot 32.

[0035] Working principle: When installing the lower cylinder 1 of the excavator breaker, first insert the groove ring 24 into the inner wall of the notch 4. When one end of the groove ring 24 contacts one end of the two sliders 22, it will push the slider 22 to slide inward on the inner wall of the slide groove 21 and compress the spring 23. Continue to push the groove ring 24 to align the grooves 25 at both ends of the groove ring 24 with the slide groove 21. Then the spring 23 will return to its original state and push the slider 22 to move outward to clamp the slider 22 in the groove 25. Then use the bolt 27 to insert the slider 22 through the circular groove at the top of the lower cylinder 1. Turn the bolt 27 to make the bolt 27 threadedly connected with the inner wall of the threaded hole 26 to further fix the position of the slider 22, fix the groove ring 24 to the inner wall of the notch 4, and then One end of the insertion rod 33 is inserted into the circular groove 31, and then the elastic metal rod 34 is bent to push the insertion rod 33 into the interior of the slot 32, and the elastic metal rod 34 is loosened so that one end of the elastic metal rod 34 is against the end of the circular groove 31 away from the slot 32, and the elastic metal rod 34 is fixed to the top of the bolt 27 inside the circular groove 31, and the position of the bolt 27 inside the cylinder body 1 is further fixed, and finally the inner sleeve is inserted into the groove ring 24, and then the hammer head and the lower cylinder body 1, the middle cylinder body 1 and the upper cylinder body 1 of the breaker are connected to the excavator arm through the connecting groove 5. When the breaker is working, the groove ring 24 can further limit the angle between the inner sleeve and the breaker, tighten the inner sleeve and reduce the wear of the outer surface of the inner sleeve.

Claims

1. A nut-loosening-proof excavator breaker lower cylinder, comprising a cylinder (1), characterized in that: A notch (4) is provided at one end of the cylinder body (1), a plurality of connection grooves (5) are provided on the outer surface of the cylinder body (1), a fastening device (2) is provided inside the notch (4), the fastening device (2) comprises a groove ring (24), both sides of the groove ring (24) are provided with clamping grooves (25), both sides of the inner wall of the notch (4) are provided with sliding grooves (21), the inner wall of the sliding groove (21) is slidably connected with a slider (22), one end of the slider (22) is provided with a spring (23), the two ends of the spring (23) are respectively fixedly connected with one end of the slider (22) and one end of the inner wall of the sliding groove (21), a threaded hole (26) is provided at the bottom end of the inner wall of the sliding groove (21), and a bolt (27) is slidably inserted into the inner wall of the slider (22).

2. The nut-loosening-proof excavator hammer lower cylinder according to claim 1, characterized in that: The size of the slider (22) at one end close to the slot (4) is smaller than the size of the end away from the slot (4), and the edge of the slider (22) at one end close to the slot (4) is arc-shaped.

3. The nut-loosening-proof excavator hammer lower cylinder according to claim 2, characterized in that: One end of the inner wall of the slide groove (21) is fixedly connected to a round rod (28), and the inner wall of the sliding block (22) slides on the outer surface of the round rod (28).

4. The nut-loosening-proof excavator hammer lower cylinder according to claim 3, characterized in that: A positioning ring (29) is fixedly connected to the inner wall of the cylinder body (1), and the inner diameter of the positioning ring (29) is slightly larger than the diameter of the bolt (27).

5. The nut-loosening-proof excavator hammer lower cylinder according to claim 4, characterized in that: Two rectangular grooves (210) are provided on one side of the cylinder body (1), and the two rectangular grooves (210) are respectively located at the outermost edges of the inner wall of the notch (4).

6. The nut-loosening-proof excavator hammer lower cylinder according to claim 1, characterized in that: An auxiliary device (3) is provided at the top end of the cylinder body (1), the auxiliary device (3) comprising an insertion rod (33), one end of the insertion rod (33) being fixedly connected to an elastic metal rod (34), the top end of the cylinder body (1) being provided with two circular grooves (31), and one side of the inner wall of the circular groove (31) being provided with two slots (32).

7. The nut-loosening-proof excavator hammer lower cylinder according to claim 6, characterized in that: One end of the insertion rod (33) is fixedly connected to two oblique rods (36), and one end of the two oblique rods (36) away from the insertion rod (33) is fixedly connected to two sides of the elastic metal rod (34).

8. The nut-loosening-proof excavator hammer lower cylinder according to claim 6, characterized in that: The outer surface of the elastic metal rod (34) is provided with a groove (35), and the groove (35) is located at the bottom end of the elastic metal rod (34).

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