Three-hole motor hydraulic vibrating rod

Abstract

The utility model discloses three -hole motor hydraulic jolt rod, including vibrating body shell finished product spare, its inside is provided with three -hole hydraulic motor finished product spare, this motor has oil inlet, oil return and oil drain, and hydraulic motor output end is connected rotating shaft through coupling, and eccentric shaft is installed on rotating shaft, and its both ends are supported in lower portion and upper portion bearing shell through bearing, the utility model discloses through the additional oil discharge circuit, can automatic pressure relief when system pressure is abnormal, effectively protects the drive shaft oil seal from high -pressure impact, has solved the traditional two -hole motor hydraulic rod oil leakage failure problem of easy, and each main connecting position adopts special thread design, has the self -tightening function under the vibration condition, prevents the component loosening, and the optimized anti -vibration and sealed structure reduces vibration transmission and improves environmental adaptability, and the whole machine structure is compact, can be directly connected with engineering machinery hydraulic system, need not external cable, especially suitable for the efficient, safe construction of complex environment such as open air, tunnel.

Description

Technical Field

[0001] This utility model relates to the technical field of three-hole motor hydraulic vibratory tampers, specifically a three-hole motor hydraulic vibratory tamper. Background Technology

[0002] Hydraulic vibrators are key equipment in concrete construction, mainly used to eliminate air bubbles and improve the density of concrete. Traditional electric vibrators require an external power supply via cable, which limits their use in field or construction environments with inconvenient electricity. In addition, electric vibrators pose safety hazards due to cable dragging, and their torque and vibration frequency often cannot meet the requirements of high-intensity construction. Most existing hydraulic vibrators on the market are driven by a two-hole hydraulic motor, which only has oil inlet and return functions. Under complex working conditions, when the system pressure rises abnormally, it cannot be depressurized in time, which can easily cause the drive shaft oil seal to be damaged by high pressure impact, resulting in internal leakage failure. At the same time, the connecting parts of traditional equipment are prone to loosening under continuous vibration, affecting the service life of the equipment. The obvious vibration transmission also leads to operator fatigue, and the characteristic of relying on external cable power supply limits its application in field construction scenarios.

[0003] Most hydraulic vibratory tampers on the market are driven by a two-hole hydraulic motor, with only an oil inlet and return circuit. This structure has obvious defects in complex construction environments: when the system working pressure rises abnormally, it cannot release pressure in time, which can easily cause the drive shaft oil seal to be damaged by high pressure impact, resulting in internal oil leakage and seriously affecting the construction progress. At the same time, the connecting parts of traditional equipment are prone to loosening under vibration, affecting the service life of the equipment. In addition, the existing equipment is insufficient in terms of vibration reduction, the vibration transmission is obvious, the operator is prone to fatigue, and it relies on external cable power supply, which limits its applicability in construction sites with inconvenient power supply, such as in the field. The cable dragging also poses a safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a three-hole motor hydraulic vibrator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-hole motor hydraulic vibrator, including a vibrating body shell finished part, a hydraulic motor finished part is provided inside the vibrating body shell finished part, and the hydraulic motor finished part has three oil ports, namely an oil inlet, an oil return port and an oil discharge port; The output end of the hydraulic motor component is connected to a rotating shaft via a coupling. An eccentric shaft is mounted on the rotating shaft. The eccentric shaft is fixed to the rotating shaft by a wedge and is prevented from axially falling off by an eccentric shaft anti-fall ring. The two ends of the rotating shaft are supported by bearings in the lower bearing housing and the upper bearing housing, respectively. The lower bearing housing and the upper bearing housing are sealed to the finished vibrating body shell through O-ring one and O-ring four, respectively. The lower bearing housing is provided with a bearing housing pressure frame on its outer side and is sealed by O-ring two and O-ring three; the upper bearing housing is provided with O-ring five on its outer side; The hydraulic motor finished product is provided with a drive shaft oil seal at the drive shaft. The drive shaft oil seal is fixed by a stop ring and is equipped with an O-ring six and a spring washer one. The finished hydraulic motor component is fixed inside the motor housing by a hydraulic motor connector and a hexagonal bolt. An intermediate tube is provided between the motor housing and the finished vibrating body outer shell component, and is sealed by O-ring seven and O-ring eight. The motor housing is fitted with a vibration-damping rubber tube and sealed with an O-ring. The oil inlet of the hydraulic motor component is connected to the hydraulic hose component 1 via connector 1, the oil return port is connected to the hydraulic hose component 2 via connector 2, and the oil discharge port is connected to the hydraulic hose assembly via coupler; the hydraulic hose component 1, the hydraulic hose component 2, and the hydraulic hose assembly are respectively fitted with a hydraulic hose sleeve, a hydraulic hose protective sleeve 1, and a hydraulic hose protective sleeve 2. The tail end of the vibrating body shell is provided with a cylindrical anti-vibration rubber and a base frame. The cylindrical anti-vibration rubber and the base frame are fixed by bolt one and spring washer three, and an intermediate anti-vibration rubber is provided. The intermediate anti-vibration rubber is fixed by bolt two and spring washer four, and a cap-type nut is provided at the end. The front end of the finished vibrator housing is provided with a pointed tip and is sealed with NPE.

[0006] Preferably, there are two bearings, which are symmetrically arranged at both ends of the rotating shaft.

[0007] Preferably, the finished vibrator housing, motor housing, intermediate tube, and anti-vibration rubber tube are connected by a left-hand thread, which has a self-tightening function under vibration conditions.

[0008] Preferably, the first connector, the second connector, and the coupler are fixed to the outer wall of the motor housing by the second hexagonal bolt, the second spring washer, and the washer, respectively. The third connector is evenly distributed on the outer wall of the motor housing with the first connector and the coupler, and the three have the same structural dimensions and are all fixed by the second hexagonal bolt.

[0009] Preferably, the cylindrical anti-vibration rubber and the base frame form a cylindrical anti-vibration rubber base frame assembly, which is detachably connected to the tail of the vibrating body shell by bolt one and spring washer three.

[0010] Preferably, an O-ring is provided between the drive shaft oil seal and the stop ring of the finished hydraulic motor component.

[0011] Preferably, the outer layer of the hydraulic hose finished product one, hydraulic hose finished product two, and hydraulic hose assembly are all made of oil-resistant rubber, and the inner layer is a polytetrafluoroethylene corrugated pipe structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By adopting a three-hole hydraulic motor design, an oil unloading circuit is added to the original oil inlet and return circuits, which can effectively release abnormal pressure, protect the oil seal from damage, and fundamentally solve the oil leakage problem. The main connection parts adopt a special thread design, which has a self-tightening function under vibration conditions to prevent the parts from loosening. The optimized anti-vibration structure and sealing components significantly reduce vibration transmission and improve operating comfort. The whole machine has a compact structure and can be directly connected to the hydraulic system of engineering machinery, eliminating the dependence on fixed power supply. It is particularly suitable for construction in complex environments such as the field and tunnels. It not only eliminates the safety hazards caused by cables, but also improves construction efficiency and quality, and the overall performance is comprehensively improved. Attached Figure Description

[0013] Figure 1 A three-dimensional perspective view of the hydraulic vibrator with a three-hole motor is presented for this utility model; Figure 2 An exploded view of the three-hole motor hydraulic vibrator is provided for this utility model; In the diagram: 1. Tip; 2. O-ring one; 3. Finished vibrator housing; 4. Lower bearing housing; 5. Bearing; 6. Rotating shaft; 7. Wedge; 8. Eccentric shaft; 9. Eccentric shaft anti-fall ring; 10. Bearing housing pressure frame; 11. O-ring two; 12. O-ring three; 13. Upper bearing housing; 14. O-ring four; 15. O-ring five; 16. Coupling; 17. Finished hydraulic motor; 18. Drive shaft oil seal; 19. Retaining ring; 20. O-ring six; 21. Spring washer one; 22. Hydraulic motor connector; 23. Hex bolt one; 24. Connector one; 25. Hex bolt two; 26. Spring washer two; 27. Washer; 28. O-ring seven; 29. ​​Intermediate tube; 30. O-ring eight; 31. Motor housing; 32. Finished anti-vibration rubber hose; 33. O-ring nine; 34. Finished hydraulic hose one; 35. Hydraulic hose sleeve; 36. Connector two; 37. Coupler; 38. Finished hydraulic hose two; 39. Hydraulic hose protective sleeve one; 40. Hydraulic hose assembly; 41. Hydraulic hose protective sleeve two; 42. Connector three; 43. Cylindrical anti-vibration rubber; 44. Base; 45. Bolt one; 46. Spring washer three; 47. NPE; 48. Intermediate anti-vibration rubber; 49. Bolt two; 50. Spring washer four; 51. Cap nut. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2 In this embodiment of the utility model, the three-hole motor hydraulic vibrator includes a vibrating body shell finished part 3, and a hydraulic motor finished part 17 is provided inside the vibrating body shell finished part 3. The hydraulic motor finished part 17 has three oil ports, namely an oil inlet, an oil return port and an oil discharge port. The output end of the hydraulic motor finished part 17 is connected to the rotating shaft 6 through the coupling 16. An eccentric shaft 8 is installed on the rotating shaft 6. The eccentric shaft 8 is fixed to the rotating shaft 6 by the wedge 7 and is prevented from axially falling off by the eccentric shaft anti-fall ring 9. The two ends of the rotating shaft 6 are supported by bearings 5 ​​in the lower bearing housing 4 and the upper bearing housing 13. The lower bearing housing 4 and the upper bearing housing 13 are respectively sealed to the vibrating body outer shell 3 through O-ring 2 and O-ring 4 14. The lower bearing housing 4 is provided with a bearing housing pressure frame 10 on the outside, and is sealed by O-ring 11 and O-ring 12; the upper bearing housing 13 is provided with O-ring 15 on the outside. The hydraulic motor finished part 17 is provided with a drive shaft oil seal 18 at the drive shaft. The drive shaft oil seal 18 is fixed by a stop ring 19 and is equipped with an O-ring 20 and a spring washer 21. The hydraulic motor finished part 17 is fixed inside the motor housing 31 by the hydraulic motor connector 22 and hex bolt 23. An intermediate tube 29 is provided between the motor housing 31 and the vibrating body housing finished part 3, and is sealed by O-ring 28 and O-ring 30. The motor housing 31 is fitted with a vibration-damping rubber tube 32, which is sealed by an O-ring 33. The oil inlet of the hydraulic motor finished part 17 is connected to the hydraulic hose finished part 34 through the connector 24, the oil return port is connected to the hydraulic hose finished part 38 through the connector 36, and the oil discharge port is connected to the hydraulic hose assembly 40 through the coupler 37; the hydraulic hose finished part 34, the hydraulic hose finished part 38, and the hydraulic hose assembly 40 are respectively fitted with a hydraulic hose sleeve 35, a hydraulic hose protective sleeve 1 39, and a hydraulic hose protective sleeve 2 41. The tail of the vibrating body shell 3 is provided with a cylindrical anti-vibration rubber 43 and a seat 44. The cylindrical anti-vibration rubber 43 and the seat 44 are fixed by bolt 1 45 and spring washer 3 46, and are equipped with an intermediate anti-vibration rubber 48. The intermediate anti-vibration rubber 48 is fixed by bolt 2 49 and spring washer 4 50, and the end is provided with a cap nut 51. The front end of the vibrator housing 3 is provided with a tip 1 and is sealed with NPE47.

[0016] In this invention, preferably, there are two bearings 5, which are symmetrically arranged at both ends of the rotating shaft 6.

[0017] In this utility model, preferably, the vibrating body shell 3, motor shell 31, intermediate tube 29 and anti-vibration rubber tube 32 are connected by a left-hand thread, and the left-hand thread has a self-tightening function under vibration conditions.

[0018] In this utility model, preferably, connector 1 24, connector 2 36 and coupler 37 are fixed to the outer wall of motor housing 31 by hexagonal bolt 2 25, spring washer 2 26 and washer 27 respectively. Connector 3 42 is evenly distributed at 120° with connector 1 24 and coupler 37 on the outer wall of motor housing 31, and the three have the same structural dimensions and are all fixed by hexagonal bolt 2 25.

[0019] In this utility model, preferably, the cylindrical anti-vibration rubber 43 and the seat frame 44 constitute a cylindrical anti-vibration rubber seat frame assembly, and the assembly is detachably connected to the tail of the vibrating body shell finished part 3 by bolt 45 and spring washer 46.

[0020] In this utility model, preferably, an O-ring 20 is also provided between the drive shaft oil seal 18 and the stop ring 19 of the hydraulic motor finished part 17.

[0021] In this utility model, preferably, the outer layer of the hydraulic hose finished product 34, the hydraulic hose finished product 38, and the hydraulic hose assembly 40 are all made of oil-resistant rubber, and the inner layer is a polytetrafluoroethylene corrugated pipe structure.

[0022] The working principle of this utility model is as follows: When in use, the operator connects the hydraulic hose finished product 34, the hydraulic hose finished product 38 and the hydraulic hose assembly 40 to the hydraulic system of the engineering machinery through the connector 24, the connector 42 and the coupler 37 respectively. After the hydraulic system is started, hydraulic oil is output from the main hydraulic pump and enters the oil inlet of the hydraulic motor component 17 through the hydraulic hose finished product 34 and the coupling 24, driving the hydraulic motor component 17 to rotate. Its output shaft transmits torque to the rotating shaft 6 through the coupling 16, causing the rotating shaft 6 to rotate at high speed. The eccentric shaft 8 installed on the rotating shaft 6 is fixed by the wedge 7 and prevented from axially falling off by the eccentric shaft anti-fall ring 9. The eccentric shaft 8 generates a strong centrifugal force during rotation. This centrifugal force is transmitted to the lower bearing housing 4 and the upper bearing housing 13 through the NJ2306EG1C3 type bearings 5 ​​at both ends of the rotating shaft 6, thereby driving the vibrator housing component 3 to generate high-frequency mechanical vibration, realizing the concrete vibration function. The tip 1 at the front end of the vibrator housing component 3 is inserted into the concrete to improve the vibration effect and is sealed by NPE47 to prevent impurities from entering. When the hydraulic system pressure rises abnormally, excess hydraulic oil is discharged through the oil discharge port of the hydraulic motor component 17 via the coupler 37 and the hydraulic hose assembly 40, forming an oil discharge circuit to prevent the drive shaft oil seal 18 from being subjected to high pressure impact. The drive shaft oil seal 18 is fixed by the stop ring 19 and works with the O-ring 20 and spring washer 21 to ensure sealing reliability. The hydraulic motor component 17 is fixed inside the motor housing 31 by the hydraulic motor connector 22 and the hex bolt 23. The motor housing 31 and the vibrator housing component 3 are connected by the intermediate tube 29 and sealed by the O-ring 28 and O-ring 30. The vibrating body housing 3, motor housing 31, intermediate tube 29 and anti-vibration rubber tube 32 are connected by left-hand thread, which generates a self-tightening effect under vibration conditions to prevent the components from loosening. The anti-vibration rubber tube 32 outside the motor housing 31 is sealed by O-ring 9 33, and together with the cylindrical anti-vibration rubber 43 at the tail, the seat 44 and the intermediate anti-vibration rubber 48, it forms a multi-layer anti-vibration system, which effectively absorbs vibration energy and reduces the vibration amplitude transmitted to the operating end. The hydraulic hose sleeve 35 outside the hydraulic hose finished product 1 34, the hydraulic hose protective sleeve 1 39 outside the hydraulic hose finished product 2 38 and the hydraulic hose protective sleeve 2 41 outside the hydraulic hose assembly 40 respectively protect the oil pipe. The lower bearing housing 4 is sealed by O-ring 2, and the outer side is provided with bearing housing pressure frame 10 and sealed by O-ring 11 and O-ring 12. The upper bearing housing 13 is sealed by O-ring 14 and O-ring 15 is provided on the outer side. The multiple sealing structure prevents leakage of lubricating medium and intrusion of external contaminants. During the entire operation, the return oil of the hydraulic motor finished part 17 returns to the hydraulic system of the construction machinery through the return port and connector 3 42 from the hydraulic hose finished part 2 38, forming a complete hydraulic cycle. This frees the equipment from dependence on a fixed power supply and is suitable for construction in complex environments such as the field and tunnels. At the same time, the synergistic effect of self-tightening threads, vibration damping system and sealing components achieves efficient, safe and stable concrete vibration operation.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-hole motor hydraulic vibrator, characterized in that, The vibrating body housing (3) includes a finished vibrating body housing (3) with a finished hydraulic motor (17) inside. The finished hydraulic motor (17) has three oil ports, namely an oil inlet, an oil return port and an oil discharge port. The output end of the hydraulic motor finished part (17) is connected to the rotating shaft (6) through the coupling (16). An eccentric shaft (8) is installed on the rotating shaft (6). The eccentric shaft (8) is fixed to the rotating shaft (6) by a wedge (7) and is prevented from axially falling off by an eccentric shaft anti-fall ring (9). The two ends of the rotating shaft (6) are supported by bearings (5) in the lower bearing housing (4) and the upper bearing housing (13). The lower bearing housing (4) and the upper bearing housing (13) are respectively sealed to the vibrating body outer shell finished part (3) by O-ring one (2) and O-ring four (14). The lower bearing housing (4) is provided with a bearing housing pressure frame (10) on the outside, and is sealed by O-ring two (11) and O-ring three (12); the upper bearing housing (13) is provided with O-ring five (15) on the outside. The hydraulic motor finished product (17) is provided with a drive shaft oil seal (18) at the drive shaft. The drive shaft oil seal (18) is fixed by a stop ring (19) and is equipped with an O-ring six (20) and a spring washer one (21). The hydraulic motor finished part (17) is fixed inside the motor housing (31) by the hydraulic motor connector (22) and hex bolt one (23). An intermediate tube (29) is provided between the motor housing (31) and the vibrating body outer shell finished part (3), and is sealed by O-ring seven (28) and O-ring eight (30). The motor housing (31) is fitted with a vibration-damping rubber tube (32) and sealed by an O-ring gasket (33); The oil inlet of the hydraulic motor finished part (17) is connected to the hydraulic hose finished part (34) through the first connector (24), the oil return port is connected to the hydraulic hose finished part (38) through the second connector (36), and the oil discharge port is connected to the hydraulic hose assembly (40) through the coupler (37); the hydraulic hose finished part (34), the hydraulic hose finished part (38), and the hydraulic hose assembly (40) are respectively fitted with a hydraulic hose sleeve (35), a hydraulic hose protective sleeve one (39), and a hydraulic hose protective sleeve two (41); The tail of the vibrating body shell (3) is provided with a cylindrical anti-vibration rubber (43) and a seat (44). The cylindrical anti-vibration rubber (43) and the seat (44) are fixed by bolt one (45) and spring washer three (46), and are equipped with an intermediate anti-vibration rubber (48). The intermediate anti-vibration rubber (48) is fixed by bolt two (49) and spring washer four (50), and is provided with a cap nut (51) at the end. The front end of the vibrator housing (3) is provided with a tip (1) and is sealed by NPE (47).

2. The three-hole motor hydraulic vibrator according to claim 1, characterized in that, There are two bearings (5), which are symmetrically arranged at both ends of the rotating shaft (6).

3. The three-hole motor hydraulic vibrator according to claim 1, characterized in that, The vibrating body housing (3), motor housing (31), intermediate tube (29) and anti-vibration rubber tube (32) are connected by a left-hand thread, which has a self-tightening function under vibration conditions.

4. The three-hole motor hydraulic vibrator according to claim 1, characterized in that, The first connector (24), the second connector (36), and the coupler (37) are fixed to the outer wall of the motor housing (31) by the second hexagonal bolt (25), the second spring washer (26), and the washer (27), respectively. The third connector (42) is evenly distributed at 120° with the first connector (24) and the coupler (37) on the outer wall of the motor housing (31), and the three have the same structural dimensions and are all fixed by the second hexagonal bolt (25).

5. The three-hole motor hydraulic vibrator according to claim 1, characterized in that, The cylindrical anti-vibration rubber (43) and the seat (44) constitute a cylindrical anti-vibration rubber seat assembly. The cylindrical anti-vibration rubber seat assembly is detachably connected to the tail of the vibrating body shell finished part (3) by bolt one (45) and spring washer three (46).

6. The three-hole motor hydraulic vibrator according to claim 1, characterized in that, The hydraulic motor finished product (17) is provided with an O-ring six (20) between the drive shaft oil seal (18) and the stop ring (19).

7. The three-hole motor hydraulic vibrator according to claim 1, characterized in that, The outer layer of the hydraulic hose finished product one (34), hydraulic hose finished product two (38) and hydraulic hose assembly (40) are all made of oil-resistant rubber, and the inner layer is a polytetrafluoroethylene corrugated pipe structure.

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