Eccentric vibrating rod with oiling pump

Abstract

The application relates to an eccentric vibrating rod with an oiling pump, belonging to the vibrating rod field, which comprises an eccentric vibrating rod inner core and a vibrating rod outer shell, the eccentric vibrating rod inner core comprises an eccentric rotating shaft, the eccentric rotating shaft is rotationally connected to the vibrating rod outer shell through a rolling bearing, and the eccentric rotating shaft core part is provided with a first through hole penetrating from top to bottom; an oiling pump unit is arranged on the lower side of the eccentric rotating shaft and the inner bottom of the vibrating rod outer shell, and an oil storage cavity is formed between the upper part of the oiling pump unit and the inner side wall of the vibrating rod outer shell; the oiling pump unit is connected with the eccentric rotating shaft, is used for conveying the oil liquid in the oil storage cavity into the first through hole under the action of the rotation of the eccentric rotating shaft, and the oil liquid flows out from the upper part of the first through hole, flows through the rolling bearing and then returns to the oil storage cavity; the rolling bearing is well lubricated and cooled by using the liquid lubricating oil, and the damage of the eccentric vibrating rod bearing caused by lubrication and cooling can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibrating rods, in particular to an eccentric vibrating rod with an oiling pump. BACKGROUND

[0002] In the construction site of the concrete, the concrete compaction is a very important process in the construction, which directly affects the quality and service life of the hardened ground. In the operation of the concrete compaction, the vibrating rod is widely used, not only in the common building construction, large floor construction, but also in the compaction operation of the road edge structure. The failure of the vibrating rod in the use process causes the construction to be interrupted, the concrete to be invalid, and the economic and social benefits to be lost.

[0003] At present, the eccentric vibrating rod utilizes the eccentric mass of the rotating shaft installed at the center of the vibrating rod to generate centrifugal force when rotating at high speed, which is transmitted to the vibrating rod shell through the bearing, so that the vibrating rod generates circumferential vibration. The core components in the eccentric vibrating rod include a driving unit, an eccentric rotating shaft, and a bearing. About one fourth of the failures in the use process of the vibrating rod are caused by bearing failure, and the advantages and disadvantages of bearing lubrication and heat dissipation are the biggest cause of bearing failure. The highest rotating speed of the bearing using grease lubrication is 70%-87% of the highest rotating speed of the bearing using oil lubrication, and the eccentric vibrating rod provides the maximum vibration force, and the rotating speed is above 11000 rpm.

[0004] At present, the lubrication mode of the bearing used in the eccentric vibrating rod on the market adopts pre-filled grease. In the use process, the high centrifugal force, temperature rise, and vibration caused by high-speed rotation of the bearing will cause the loss of the lubricating grease, thereby reducing the normal service life of the bearing, and finally causing the damage of the vibrating rod. SUMMARY

[0005] The present application provides an eccentric vibrating rod with an oiling pump, which can use liquid lubricating oil to lubricate and cool the rolling bearing well, reduce the damage of the eccentric vibrating rod bearing caused by lubrication and heat dissipation, reduce the failure rate, reduce the maintenance cost, create greater economic value and social benefits.

[0006] The technical scheme for solving the above technical problems is as follows: an eccentric vibrating rod with an oiling pump, comprising an eccentric vibrating rod inner core and a vibrating rod outer shell, the eccentric vibrating rod inner core comprising an eccentric rotating shaft, the eccentric rotating shaft being rotatably connected to the vibrating rod outer shell through a rolling bearing, characterized in that the eccentric rotating shaft core has a first through hole penetrating from top to bottom, an oiling pump unit being arranged on the lower side of the eccentric rotating shaft and the inner bottom of the vibrating rod outer shell, and an oil storage cavity being formed between the upper part of the oiling pump unit and the inner side wall of the vibrating rod outer shell; the oiling pump unit is connected to the eccentric rotating shaft, and is used for delivering the oil in the oil storage cavity into the first through hole under the rotation of the eccentric rotating shaft, the oil flowing out of the upper part of the first through hole and then flowing through the rolling bearing and returning to the oil storage cavity.

[0007] Further, the oiling pump unit comprises an oil power element and a shell, the oil power element being connected to the inner wall of the vibrating rod outer shell through the shell, the oil inlet of the oiling pump unit being connected to the oil storage cavity, and the oil outlet of the oiling pump unit being connected to the first through hole.

[0008] Further, the oil inlet and the oil outlet are arranged on the shell.

[0009] Further, the shell is fixedly connected to the vibrating rod outer shell, the oil power element is rotatably connected to the shell, and the oil power element is fixedly connected to the eccentric rotating shaft in the circumferential direction.

[0010] In a technical scheme of the present application, the oil power element adopts a screw rod structure, the screw rod is coaxially fixedly connected to the eccentric rotating shaft, the outer wall of the screw rod is rotatably connected to the inner wall of the shell, and the second through hole is arranged in the core of the screw rod and connected to the first through hole and the oil outlet; when the screw rod rotates, the oil in the helical groove of the screw rod moves along the axial direction, so that the oil is sucked into the oil inlet and then enters the first through hole through the second through hole and the oil outlet.

[0011] In another technical scheme of the present application, the oil power element adopts a gear structure, comprising a driving gear and a driven gear which are meshed with each other, the driving gear being coaxially fixedly connected to the eccentric rotating shaft through a gear shaft, the second through hole being arranged in the core of the gear shaft and connected to the first through hole and the oil outlet, and the driving gear and the driven gear forming a sealed space with the shell; when the driving gear and the driven gear rotate, the oil is sucked into the oil inlet and then enters the first through hole through the second through hole and the oil outlet.

[0012] Further, the eccentric vibrating rod inner core further comprises a driving unit for driving the eccentric rotating shaft to rotate, the driving unit being connected to the upper end of the eccentric rotating shaft through an upper coupling.

[0013] Further, the upper joint is provided with a radial through hole in communication with the first through hole along the radial direction of the upper joint, the radial through hole is located higher than the rolling bearing, and the oil circulates between the oil storage cavity, the first through hole, the radial through hole, the gap between the rolling bearing and the outer shell of the eccentric shaft and the oiling pump unit.

[0014] Further, the vibrating rod outer shell comprises a vibrating shaft outer tube arranged outside the eccentric shaft and a vibrating head arranged outside the oiling pump unit, and the vibrating head is fixedly connected with the vibrating shaft outer tube.

[0015] Further, the vibrating rod outer shell further comprises a connecting sleeve, a vibrating rod connecting frame and a protective tube, the protective tube, the vibrating rod connecting frame and the connecting sleeve are sequentially connected from top to bottom, and the vibrating shaft outer tube is connected to the lower end of the connecting sleeve.

[0016] The present application has the following advantages: the first through hole is arranged in the eccentric shaft along the radial direction, the oil storage cavity is arranged in cooperation, the lubricating oil passage is formed among the eccentric shaft, the rolling bearing and the oil storage cavity, the oiling pump unit is arranged in the oil storage cavity and connected with the eccentric shaft, the oiling pump unit is driven by the eccentric shaft to provide power for the circulation of the lubricating oil when the eccentric shaft works, the rolling bearing is well lubricated and cooled during the working process of the vibrating rod, the damage of the eccentric vibrating rod bearing caused by lubrication and cooling is reduced, the service life of the eccentric vibrating rod is improved, and the vibration effect of the vibrating rod is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structure explosion drawing of embodiment 1 of the present application;

[0018] Figure 2 is the local section structure schematic view of embodiment 1 of the present application;

[0019] Figure 3 is the local enlarged structure schematic view in Figure 2

[0020] Figure 4 is the local enlarged structure schematic view in Figure 3

[0021] Figure 5 is the local enlarged structure schematic view in Figure 3

[0022] Figure 6 is the structure schematic view of the upper shell of embodiment 1 of the present application;

[0023] Figure 7 is the front view and side view structure schematic view of the lower shell of embodiment 1 of the present application;

[0024] Figure 8 ​​​is the structural explosion drawing of the oiling pump unit of the embodiment 2 of the present application;

[0025] Figure 9 is the connection structure schematic diagram of the oiling pump unit of the embodiment 2 of the present application in the outer shell of the vibrating rod;

[0026] Figure 10 is the sectional structure schematic diagram of the oiling pump unit of the embodiment 2 of the present application;

[0027] Figure 11 is the structure schematic diagram of the upper shell of the oiling pump unit of the embodiment 2 of the present application;

[0028] Figure 12 is the structure schematic diagram of the lower shell of the oiling pump unit of the embodiment 2 of the present application;

[0029] In the drawing: 100. eccentric vibrating rod inner core, 200. vibrating rod outer shell, 1. eccentric rotating shaft, 101. first through hole, 2. rolling bearing, 3. oil storage cavity, 4. oiling pump unit, 41. oil power element, 410. screw rod, 411. second through hole, 42. shell, 421. upper shell, 422. lower shell, 43. oil inlet, 44. oil outlet, 45. driving gear, 451. gear shaft, 46. driven gear, 5. driving unit, 6. upper coupling, 61. radial through hole, 62. lower coupling, 7. vibrating shaft outer tube, 8. vibrating head, 9. vibrating rod connecting frame, 91. connecting sleeve, 10. protective tube, 11. O-shaped sealing ring. DETAILED DESCRIPTION

[0030] The principles and features of the present application are described below, and the embodiments are only used to explain the present application, and are not used to limit the scope of the present application.

[0031] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment 1

[0033] As shown in the accompanying Figures 1 to 7 , the embodiment provides an eccentric vibrating rod with an oiling pump, which comprises an eccentric vibrating rod inner core 100 and a vibrating rod outer shell 200.

[0034] In the embodiment, the vibrating rod outer shell comprises a vibrating shaft outer tube 7 and a vibrating head 8, and further comprises a connecting sleeve 91, a vibrating rod connecting frame 9 and a protective tube 10. The protective tube 10 is fastened and connected with the upper end of the vibrating rod connecting frame 9 by a clamp way. The lower end of the vibrating rod connecting frame 9 is tightly connected with one end of the connecting sleeve 91 by a thread. The other end of the connecting sleeve 91 is tightly connected with the vibrating shaft outer tube 7 by a thread. The vibrating head 8 is tightly fixed and connected with the lower end of the vibrating shaft outer tube 7 by a thread.

[0035] In the embodiment, the eccentric vibrating rod inner core comprises an eccentric rotating shaft 1 and a driving unit 5 for driving the eccentric rotating shaft 1 to rotate. The driving unit 5 is connected inside the connecting sleeve 91. The eccentric rotating shaft 1 is arranged inside the vibrating shaft outer tube 7. The driving unit 5 is connected with the upper end of the eccentric rotating shaft 1 through an upper coupling 6. The upper coupling 6 is fastened and connected with one end of the eccentric rotating shaft 1 by an internal thread. A lower coupling 62 is fastened and connected with the other end of the eccentric rotating shaft 1 by an internal thread. The upper coupling 6 is provided with a radial through hole 61 which is communicated with a first through hole 101 and is arranged along the radial direction of the upper coupling 6. The radial through hole 61 serves as a lubricating oil flow channel and is arranged at a position higher than the rolling bearing 2. The two ends of the eccentric rotating shaft 1 are rotatably connected to the vibrating rod outer shell 200 through the rolling bearing 2. The core of the eccentric rotating shaft 1 has the first through hole 101 which is arranged along the axial direction and penetrates the upper and lower parts of the core. The first through hole 101 serves as a lubricating oil flow channel.

[0036] In the embodiment, an oiling pump unit 4 is arranged at the lower side of the eccentric rotating shaft 1 and the inner bottom of the vibrating rod outer shell 200. An oil storage cavity 3 is formed between the upper part of the oiling pump unit 4 and the inner side wall of the vibrating rod outer shell 200. The oiling pump unit 4 and the oil storage cavity 3 are arranged inside the vibrating head 8. An O-shaped sealing ring 11 is arranged radially between the oiling pump unit 4 and the vibrating head 8 to seal the outer side wall of the oiling pump unit 4 and the inner wall of the vibrating head 8. The oiling pump unit 4 is connected with the eccentric rotating shaft 1. The oiling pump unit 4 is used to deliver the oil in the oil storage cavity 3 to the first through hole 101 under the action of the rotation of the eccentric rotating shaft 1. The oil flows out from the upper part of the first through hole 101, passes through the rolling bearing 2 and then flows back to the oil storage cavity 3.

[0037] Specifically, the oiling pump unit 4 comprises an oil power element 41 and a shell 42. The oil power element 41 is connected with the vibrating rod outer shell 200 through the shell 42. The oil inlet 43 of the oiling pump unit 4 is communicated with the oil storage cavity 3. The oil outlet 44 of the oiling pump unit 4 is communicated with the first through hole 101. More specifically, the oil inlet 43 and the oil outlet 44 are both arranged on the shell 42. The shell 42 is fixedly connected with the vibrating rod outer shell 200. The oil power element 41 is rotatably connected with the shell 42. The oil power element 41 is fixedly connected with the eccentric rotating shaft 1 through the lower coupling 62.

[0038] The driving unit 5 is connected with the upper shaft 6 by a key mode for transmitting torque power, and the lower shaft 62 is connected with the oil power unit 41 by a key mode for transmitting torque power, and an O-shaped sealing ring 11 is arranged radially between the two.

[0039] In use, the eccentric vibrator is used with the vibrating head downward, and an appropriate amount of liquid lubricating oil is injected into the oil storage cavity 3, and the upper part of the oiling pump unit 4 is immersed in the oil in the oil storage cavity 3, the driving unit 5 drives the eccentric shaft 1 to rotate, and the oil power unit 41 connected with the eccentric shaft 1 sends the oil in the oil storage cavity 3 into the first through hole 101 of the eccentric shaft 1, the oil flows out from the upper part of the first through hole 101 and flows to the gap between the upper shaft 6 and the vibrating shaft outer tube 7 through the radial through hole 61, the oil naturally flows downward through the inner gap of the upper rolling bearing 2 in communication with the radial through hole 61 by using the gap existing in the inner part of the rolling bearing 2, and then flows to the gap between the outer wall of the eccentric shaft 1 and the vibrator outer shell 200, and then flows back to the oil storage cavity 3 through the lower rolling bearing 2, forming the circulation of the oil. In this way, the oil circulates between the oil storage cavity 3, the first through hole 101, the radial through hole 61, the rolling bearing 2, the gap between the outer wall of the eccentric shaft 1 and the vibrator outer shell 200, and the oiling pump unit 4. During the working process of the vibrator, the oiling pump unit 4 can beat the lubricating oil into the eccentric shaft and flow through the rolling bearing 2 with the rotation of the eccentric shaft 1, so as to realize the online good lubrication of the rolling bearing 2. That is, the corresponding rolling bearing 2 of the eccentric shaft 1 is continuously lubricated during the working process of the vibrator, which reduces the damage of the eccentric vibrator caused by the lubrication of the bearing, and is beneficial to prolong the service life of the eccentric vibrator.

[0040] In the embodiment, the oil power unit 41 specifically adopts a screw structure, the screw 410 is coaxially fixedly connected with the eccentric shaft 1 through the lower shaft 62 and is connected in the vibrator outer shell 200 through the shell 42. Specifically, the shell 42 is fixedly connected with the vibrator outer shell 200, the screw 410 is inserted into the shell 42 and is rotationally connected with the shell 42, the outer wall of the screw 410 is rotationally matched with the inner wall of the shell 42, and the core of the screw 410 is provided with a second through hole 411 in communication with the first through hole 101 and the oil outlet 44; the screw 410 is key-connected with the lower shaft 62 for transmitting torque power, when the screw 410 rotates, the oil in the helical groove of the screw 410 moves along the axial direction, the screw 410 rotates with the eccentric shaft 1 and provides power for the circulation of the lubricating oil, the oil is sucked into the oil inlet 43 and enters the first through hole 101 through the second through hole 411 and the oil outlet 44. The working principle of the screw structure is as follows: the helical line angle of the thread is used to rotate the screw by a certain torque, the oil in the helical groove moves along the axial direction, the outer cylindrical surface of the screw 410 and the inner cavity of the upper and lower shells form a small gap matching space, and the eccentric shaft 1 rotates to provide power for the circulation of the lubricating oil.

[0041] Specifically, in the embodiment, the shell comprises an upper shell 421 and a lower shell 422, the oil inlet 43 is arranged on the upper shell 421, the oil outlet 44 is arranged on the lower shell 422, and the oil inlet 43 and the oil outlet 44 are in communication with each other inside the shell 42. More specifically, the lower shell 422 is fixed on the bottom of the vibrating head 8 by bolts, the tail end of the lower shell 422 and the bottom wall of the vibrating head 8 have a cavity for connecting the oil outlet 44 and the second through hole 411, the front end of the lower shell 422 is embedded in the upper shell 421, the tail end of the upper shell 421 is fixedly connected with the lower shell 422, the upper shell 421 has a cavity for accommodating the screw rod 410, the tail end of the screw rod 410 is rotatably connected with the lower shell 422 through a light shaft, the front part of the screw rod 410 is rotatably connected with the upper shell 421 through a light shaft, and the light shaft of the front part of the screw rod 410 extends forward to be connected with the lower coupling 62; the oil inlet 43 is arranged on the side wall of the front part of the upper shell 421, and the oil outlet 44 is arranged on the bottom end of the lower shell 422. The oil in the oil storage cavity 3 enters the gap between the screw rod 410 and the upper shell through the oil inlet 43, then enters the second through hole 411 through the oil outlet 44 and the cavity between the bottom end of the lower shell 422 and the bottom wall of the vibrating head 8 in turn, and then enters the first through hole 101. The oil flows out through the top end of the eccentric shaft 1, then flows out through the radial through hole 61 of the upper coupling 6, and then flows through the gap of the upper rolling bearing 2, and then returns to the gap between the outer wall of the eccentric shaft 1 and the outer tube 7 of the vibrating shaft, and then flows back to the oil storage cavity 3 through the gap of the lower rolling bearing 2, completing the circulation of the lubricating oil, as shown in Figure 3 the arrow direction.

[0042] Embodiment 2

[0043] The overall structure and principle of the embodiment are basically the same as those of embodiment 1, except that the oil liquid power element 41 of the embodiment adopts a gear structure to replace the screw structure, as shown in Figure 8 and Figure 9 the structure and principle are the same as those of a gear pump, which comprises a driving gear 45 and a driven gear 46 meshing with each other, the driving gear 45 and the driven gear 46 are installed in parallel, and are installed in the shell, the shell is connected to the bottom of the vibrating rod outer shell 200 by bolts, and the driving gear 45 is coaxially fixedly connected with the eccentric shaft 1 through a gear shaft 451. Specifically, the gear shaft 451 is connected with the eccentric shaft 1 through a key mode for transmitting torque power. The gear shaft 451 has a second through hole 411 in the core for connecting the first through hole 101 and the oil outlet 44. The upper shell 421 and the lower shell 422 are adaptively modified, as shown in Figure 10 and Figure 11The oil inlet 43 is formed on the front end surface of the upper housing 421, and the oil outlet 44 is formed on the bottom end surface of the lower housing 422. A cavity is left between the bottom end of the lower housing 422 and the bottom wall of the vibrating head 8 for connecting the oil outlet 44 and the second through hole 411. The two gears form two closed spaces with the upper and lower housings. When the two gears rotate, the oil in the gear grooves moves around the axial direction, so that the oil is sucked into the oil inlet 43 and enters the first through hole 101 through the second through hole 411 and the oil outlet 44. In this way, the oil in the oil storage cavity 3 enters the gap between the two gears and the housings through the oil inlet 43, and then enters the second through hole 411 through the oil outlet 44 and the cavity between the bottom end of the lower housing 422 and the bottom wall of the vibrating head 8, and then enters the first through hole 101, forming the oil flow. The oil circulation route outside the oiling pump unit is the same as that of Example 1, which will not be described here.

Claims

1. An eccentric vibratory tamping rod with an oil pump, comprising an eccentric vibratory tamping rod inner core (100) and a vibratory tamping rod outer shell (200), wherein the eccentric vibratory tamping rod inner core (100) includes an eccentric rotating shaft (1), the eccentric rotating shaft (1) being rotatably connected to the vibratory tamping rod outer shell (200) via a rolling bearing (2), characterized in that, The eccentric rotating shaft (1) has a first through hole (101) penetrating from top to bottom, an oiling pump unit (4) is arranged on the lower side of the eccentric rotating shaft (1) and the inner bottom of the vibrating rod outer shell (200), and an oil storage cavity (3) is formed between the upper part of the oiling pump unit (4) and the inner sidewall of the vibrating rod outer shell (200); the oiling pump unit (4) is connected with the eccentric rotating shaft (1) and used for conveying the oil in the oil storage cavity (3) to the first through hole (101) under the rotation of the eccentric rotating shaft (1), the oil flows out from the upper part of the first through hole (101), passes through the rolling bearing (2) and then flows back to the oil storage cavity (3); the oiling pump unit (4) comprises an oil power element (41) and a shell (42), the oil power element (41) is connected with the vibrating rod outer shell (200) through the shell (42), an oil inlet (43) of the oiling pump unit (4) is connected with the oil storage cavity (3), and an oil outlet (44) of the oiling pump unit (4) is connected with the first through hole (101); the oil inlet (43) and the oil outlet (44) are arranged on the shell (42), the shell (42) is fixedly connected with the vibrating rod outer shell (200), the oil power element (41) is rotatably connected with the shell (42), and the oil power element (41) is fixed relative to the eccentric rotating shaft (1) in the circumferential direction; the oil power element (41) adopts a screw rod structure, a screw rod (410) is coaxially and fixedly connected with the eccentric rotating shaft (1), the outer wall of the screw rod (410) is rotatably connected with the inner wall of the shell (42), and the core of the screw rod (410) is provided with a second through hole (411) connected with the first through hole (101) and the oil outlet (44); when the screw rod (410) rotates, the oil in the helical groove of the screw rod (410) moves along the axial direction, so that the oil is sucked from the oil inlet (43) and enters the first through hole (101) from the oil outlet (44) through the second through hole (411); alternatively, the oil power element (41) adopts a gear structure, which comprises a driving gear (45) and a driven gear (46) meshing with each other, the driving gear (45) is coaxially and fixedly connected with the eccentric rotating shaft (1) through a gear shaft (451), the core of the gear shaft (451) is provided with a second through hole (411) connected with the first through hole (101) and the oil outlet (44), and the driving gear (45) and the driven gear (46) form a sealed space with the shell (42); when the driving gear (45) and the driven gear (46) rotate, the oil in the gear slot moves around the axial direction, so that the oil is sucked from the oil inlet (43) and enters the first through hole (101) from the oil outlet (44) through the second through hole (411).

2. The eccentric vibrating rod with lubricating pump according to any of claims 1, characterized in that The eccentric vibrating rod inner core (100) further comprises a driving unit (5) for driving the eccentric rotating shaft (1) to rotate, and the driving unit (5) is connected with the upper end of the eccentric rotating shaft (1) through an upper coupling (6).

3. The eccentric vibrating rod with lubricating pump according to claim 2, characterized in that The upper coupling (6) is provided with a radial through hole (61) in communication with the first through hole (101) along the radial direction, and the radial through hole (61) is located higher than the rolling bearing (2); the oil circulates between the oil storage cavity (3), the first through hole (101), the radial through hole (61), the rolling bearing (2), the gap between the outer wall of the eccentric rotating shaft (1) and the vibrating rod outer sheath (200), and the oiling pump unit (4).

4. The eccentric vibrating rod with lubricating pump according to claim 1, characterized in that The vibrating rod outer sheath (200) comprises a vibrating shaft outer tube (7) arranged outside the eccentric rotating shaft (1) and a vibrating head (8) arranged outside the oiling pump unit (4), and the vibrating head (8) is fixedly connected with the vibrating shaft outer tube (7).

5. The eccentric vibrating rod with lubricating pump according to claim 4, characterized in that The vibrating rod outer sheath (200) further comprises a connecting sleeve (91), a vibrating rod connecting frame (9) and a protective tube (10), the protective tube (10), the vibrating rod connecting frame (9) and the connecting sleeve (91) are sequentially connected from top to bottom, and the vibrating shaft outer tube (7) is connected to the lower end of the connecting sleeve (91).

Images