A hydraulic breaking hammer drill rod pin locking mechanism and hydraulic breaking hammer
Patent Information
- Application Number
- CN202522071893.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-26
AI Technical Summary
随着工程建设规模的不断扩大和对施工效率要求的日益提高，这种低效的拆卸方式严重影响了破碎锤的维修保养进度，进而影响了整个工程的施工进度，增加了施工成本
本实用新型提供的液压破碎锤钎杆销锁紧机构，当无外力作用时，弹性固定件将钎杆销止退销的出口进行封堵，实现对钎杆销止退销的锁紧，当需要更换钎杆和钎杆销时，只需人力轻轻推动弹性固定件，使得弹性件发生压缩，即可将钎杆销止退销的出口打开，实现钎杆销止退销的解锁，可轻松高效的依次将钎杆销止退销、钎杆销和钎杆取出进行更换，耗时仅需5-10秒，既提升了维修效率又降低了操作难度。
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Figure CN224717142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic breaker technology, and in particular to a hydraulic breaker chisel pin locking mechanism and a hydraulic breaker. Background Technology
[0002] Hydraulic breakers, as a common type of engineering machinery, play an important role in many fields such as mining, building demolition, and road construction. Their working principle involves using hydraulic and nitrogen energy to drive a piston at high speed. During this movement, the piston impacts a chisel, which, after absorbing the energy transmitted from the piston, directly acts on the material, thus achieving material crushing.
[0003] However, in actual use, hydraulic breakers face some pressing problems. Because hydraulic breakers operate at high frequencies, the chisel inevitably wears down after prolonged use due to frequent contact and friction between the chisel and the material being broken. Simultaneously, the chisel pin used to fix the chisel also wears down on its contact surface due to repeated forces and relative movement. When the chisel and chisel pin wear to a certain extent, they need to be replaced to ensure the normal operating performance and safety of the hydraulic breaker.
[0004] When maintaining and repairing hydraulic breakers, after-sales personnel need to first remove the chisel pin anti-reverse pin before they can replace the chisel pin and chisel. However, the existing chisel pin locking mechanism presents a significant challenge for after-sales personnel. The existing chisel pin locking mechanism, such as... Figure 1 As shown. Currently, after-sales personnel typically use tools such as sledgehammers to hammer out the cotter pin 5, rubber plug 10, and chisel pin anti-reverse pin 4, i.e., along... Figure 1 As indicated by the middle arrow, the chisel pin anti-reverse pin 4, cotter pin 5, and rubber plug 10 are simultaneously hammered out using tools such as a sledgehammer. This disassembly method is not only time-consuming and labor-intensive but also extremely inefficient. According to actual operational statistics, removing a single chisel pin anti-reverse pin takes at least 3-5 minutes. With the continuous expansion of engineering construction scale and the increasing demands for construction efficiency, this inefficient disassembly method seriously affects the maintenance and repair progress of the hydraulic breaker, thereby affecting the overall construction progress and increasing construction costs. Therefore, there is an urgent need for a more efficient and convenient chisel pin anti-reverse pin locking solution for chisel pins and chisel replacement to solve the problems existing in the current technology. Utility Model Content
[0005] In order to solve the above-mentioned technical problems in the prior art, this utility model provides a hydraulic breaker chisel pin locking mechanism and a hydraulic breaker.
[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: The first aspect of this utility model is to provide a hydraulic breaker chisel pin locking mechanism, including a chisel pin anti-reverse pin and a thrust assembly. The chisel pin anti-reverse pin is used to lock the chisel pin, and the thrust assembly is used to lock the chisel pin anti-reverse pin. The thrust assembly includes a cotter pin, an elastic element, and an elastic fixing element. One end of the elastic fixing element is connected to the elastic element, and the other end is used to lock the chisel pin anti-reverse pin.
[0007] The hydraulic breaker chisel pin locking mechanism provided by this utility model can lock the chisel pin stop pin by blocking the outlet of the chisel pin stop pin when no external force is applied. When the chisel and chisel pin need to be replaced, the elastic fixing member can be gently pushed manually to compress the elastic member and open the outlet of the chisel pin stop pin, thus unlocking the chisel pin stop pin. The chisel pin stop pin, chisel pin and chisel can be easily and efficiently removed and replaced in sequence, which improves maintenance efficiency and reduces operation difficulty.
[0008] Based on the above technical solution, the present invention can also be improved in the following ways: Furthermore, the elastic element is a spring, and the elastic fixing element includes a non-standard anti-push-push type one and a non-standard anti-push-push type two, which are respectively connected to the two ends of the spring.
[0009] The beneficial effect of adopting the above-mentioned further technical solution is that by setting irregular anti-push pin one and irregular anti-push pin two at both ends of the spring, the length of the spring can be shortened, and at the same time, the two ends of the spring can be fixed in both directions to prevent the spring from shifting when compressed.
[0010] Furthermore, both the irregular anti-slip device one and the irregular anti-slip device two have protrusions at their ends that are connected to the spring, and the protrusions extend into the spring.
[0011] The beneficial effect of adopting the above-mentioned further technical solution is that by setting a protrusion and extending into the spring, it plays a role in fixing and guiding the spring, preventing the spring from shifting when compressed.
[0012] Furthermore, the cotter pin, the first irregular stop pin, the spring, and the second irregular stop pin are connected in sequence.
[0013] Furthermore, the axis of the drill pin intersects perpendicularly with the axis of the drill pin anti-reverse pin, and the axis of the drill pin anti-reverse pin intersects perpendicularly with the axis of the elastic fixing member.
[0014] Another aspect of this utility model is to provide a hydraulic breaker, including the above-mentioned hydraulic breaker chisel pin locking mechanism, housing, chisel, and chisel pin.
[0015] Furthermore, the drill rod is mounted on the housing, and the housing has through holes one, two, and three. Through hole one is used to install the drill rod pin, through hole two is used to install the drill rod pin anti-reverse pin, and through hole three is used to install the thrust assembly.
[0016] Furthermore, the axis of the drill rod is perpendicular to the axis of the drill rod pin.
[0017] Furthermore, the drill pin is provided in two sets, and the two sets of drill pins are symmetrically arranged on both sides of the drill.
[0018] Compared with the prior art, the present invention has the following technical effects: The hydraulic breaker chisel pin locking mechanism provided by this utility model, when there is no external force, the elastic fixing member blocks the outlet of the chisel pin anti-reverse pin, thereby locking the chisel pin anti-reverse pin. When it is necessary to replace the chisel and chisel pin, simply push the elastic fixing member gently to compress it, thereby opening the outlet of the chisel pin anti-reverse pin and unlocking it. The chisel pin anti-reverse pin, chisel pin, and chisel can be easily and efficiently removed and replaced in sequence, taking only 5-10 seconds, which improves maintenance efficiency and reduces operation difficulty. Attached Figure Description
[0019] Figure 1 A schematic diagram of a prior art hydraulic breaker chisel pin locking mechanism is shown. Figure 2 This diagram shows the structure of the hydraulic breaker according to an embodiment of the present invention. Figure 3 A front view of the hydraulic breaker according to an embodiment of the present invention is shown; Figure 4 A cross-sectional view of the hydraulic breaker according to an embodiment of the present invention is shown; Figure 5 Show Figure 3 Cross-sectional view along the AA direction; Figure 6 A schematic diagram of the cotter pin structure is shown; Figure 7 This diagram shows the structural schematic of the irregularly shaped anti-sales promotion device; Figure 8 A schematic diagram of the spring structure is shown; Figure 9 This diagram shows the structural schematic of the irregular anti-sales promotion method II; Figure label: 1. Housing; 2. Drill rod; 3. Drill rod pin; 4. Drill rod pin anti-reverse pin; 5. Cotter pin; 6. Spring; 7. Irregular anti-reverse pin one; 8. Irregular anti-reverse pin two; 9. Protrusion; 10. Rubber stopper. Detailed Implementation
[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0021] See Figures 2 to 9 A hydraulic breaker includes a hydraulic breaker chisel pin locking mechanism, a housing 1, a chisel 2, and a chisel pin 3. The hydraulic breaker chisel pin locking mechanism includes a chisel pin anti-retraction pin 4 and a thrust assembly. The chisel pin anti-retraction pin 4 is used to lock the chisel pin 3, and the thrust assembly is used to lock the chisel pin anti-retraction pin 4. The thrust assembly includes a cotter pin 5, a non-standard anti-retraction pin 1 7, a spring 6, and a non-standard anti-retraction pin 2 8 arranged sequentially. The ends of the non-standard anti-retraction pin 1 7 and the non-standard anti-retraction pin 2 8 connected to the spring 6 are provided with protrusions 9, which extend into the spring. The cotter pin 5 physically locks the non-standard anti-retraction pin 1 7. The drill rod 2 is mounted on the housing 1. The housing 1 has through holes one, two, and three. Through hole one is used to install the drill rod pin 3, through hole two is used to install the drill rod pin anti-reverse pin 4, and through hole three is used to install the thrust assembly. The axis of the drill rod pin 3 intersects perpendicularly with the axis of the drill rod pin anti-reverse pin 4. The axis of the drill rod pin anti-reverse pin 4 intersects perpendicularly with the axes of the irregular anti-reverse pin 7 and the irregular anti-reverse pin 8. The axis of the drill rod 2 is perpendicular to the axis of the drill rod pin 3. There are two sets of drill rod pins 3, which are symmetrically arranged on both sides of the drill rod 2.
[0022] In normal use, when the chisel pin anti-reverse pin 4 is locked, the spring 6 is slightly compressed. This compression keeps the non-standard anti-reverse pin 7 and non-standard anti-reverse pin 8 fixed, with the non-standard anti-reverse pin 8 blocking the outlet of the chisel pin anti-reverse pin 4. When replacing the chisel pin 3 and chisel 2 of the hydraulic breaker, manual operation is performed along... Figure 5Pushing in the direction indicated by the middle arrow causes the spring 6 to undergo further elastic deformation and generate greater compression. The spring 6 drives the irregular stop pin 2 8 to move away from the outlet side of the drill pin anti-reverse pin 4. When the irregular stop pin 2 8 moves to a sufficiently large position, the outlet pin hole of the drill pin anti-reverse pin 4 is exposed, that is, the drill pin anti-reverse pin 4 is in the unlocked state. Then the drill pin anti-reverse pin 4 can be removed, and then the drill pin 3 and the drill 2 can be removed in sequence. The whole process takes only 5-10 seconds, which improves maintenance efficiency and reduces the difficulty of operation.
[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A hydraulic breaker chisel pin locking mechanism, characterized in that, The device includes a drill rod pin anti-reverse pin and a thrust assembly. The drill rod pin anti-reverse pin is used to lock the drill rod pin, and the thrust assembly is used to lock the drill rod pin anti-reverse pin. The thrust assembly includes a cotter pin, an elastic element, and an elastic fixing element. One end of the elastic fixing element is connected to the elastic element, and the other end is used to lock the drill rod pin anti-reverse pin.
2. The hydraulic breaker chisel pin locking mechanism according to claim 1, characterized in that, The elastic element is a spring, and the elastic fixing element includes a non-standard anti-push-push type one and a non-standard anti-push-push type two, which are respectively connected to the two ends of the spring.
3. The hydraulic breaker chisel pin locking mechanism according to claim 2, characterized in that, Both the irregular anti-slip device one and the irregular anti-slip device two have protrusions at their ends that are connected to the spring, and the protrusions extend into the spring.
4. The hydraulic breaker chisel pin locking mechanism according to claim 2, characterized in that, The cotter pin, the first irregular stop pin, the spring, and the second irregular stop pin are connected in sequence.
5. The hydraulic breaker chisel pin locking mechanism according to any one of claims 1 to 4, characterized in that, The axis of the drill pin intersects perpendicularly with the axis of the drill pin anti-reverse pin, and the axis of the drill pin anti-reverse pin intersects perpendicularly with the axis of the elastic fastener.
6. A hydraulic breaker, characterized in that, The hydraulic breaker includes the chisel pin locking mechanism, housing, chisel, and chisel pin as described in any one of claims 1 to 5.
7. The hydraulic breaker according to claim 6, characterized in that, The drill rod is mounted on the housing, which has through holes one, two, and three. Through hole one is used to install the drill rod pin, through hole two is used to install the drill rod pin anti-reverse pin, and through hole three is used to install the thrust assembly.
8. The hydraulic breaker according to claim 6 or 7, characterized in that, The axis of the drill rod is perpendicular to the axis of the drill rod pin.
9. The hydraulic breaker according to claim 8, characterized in that, The drill pin is provided in two sets, and the two sets of drill pins are symmetrically arranged on both sides of the drill.