Filling device, filling system, swing mechanism and engineering machinery
By designing an automated grease filling device and system, and utilizing a servo motor and hydraulic check valve to automatically replenish grease, the problem of untimely grease filling caused by manual operation is solved, thus extending the service life of the excavator's slewing mechanism gears.
Patent Information
- Application Number
- CN202520808339.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-27
AI Technical Summary
The lubrication of the excavator's slewing mechanism relies on manual operation, which can easily lead to premature gear wear due to omissions or delays.
Design a grease filling device and system that uses a servo motor to precisely control the number of rotations and combines it with a hydraulic check valve to automatically replenish grease and avoid human error.
This ensures timely replenishment of grease, extends the service life of gears, and avoids premature wear caused by human factors.
Smart Images
Figure CN223882151U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of filling device and filling system, belong to engineering machinery technical field. BACKGROUND
[0002] Rotary function is a basic function of excavator, and this function is realized by rotating the large gear of rotary bearing driven by the pinion of rotary motor output end. In order to prolong service life, it is necessary to use lubricating grease, i.e. grease, to lubricate the gear pair.
[0003] Currently, the grease pool of excavator's rotary mechanism is manually filled with grease according to the set maintenance period. However, human operation is easy to cause gear wear due to missing or not timely adding grease. SUMMARY
[0004] In view of the problems existing in the prior art, the utility model provides a kind of filling device and filling system, which is beneficial to the timely supplement of rotary mechanism meshing gear lubricating grease and avoids the lack of lubricating grease caused by human factors.
[0005] The utility model is implemented according to the following technical solutions:
[0006] In the first aspect, the utility model provides a kind of filling device, comprising:
[0007] A circular cylinder with one axial end face opening and the other axial end face closed and hollow, the radial circumference of the circular cylinder is provided with a through hole near the closed axial end face, which is used as the inlet and outlet of liquid;
[0008] A piston assembly composed of an integrally formed or fixedly connected piston rod and piston head; the piston head is arranged in the circular cylinder, and a sealing member is arranged between the facing circumferences of the two;
[0009] A power component and a transmission component, the power component is connected with the piston assembly through the transmission component, and provides power to the piston assembly so that it can move linearly in the circular cylinder; when the piston assembly moves towards the through hole, the piston head compresses the liquid in the circular cylinder to flow out of the through hole; when the piston assembly moves away from the through hole, the liquid outside is sucked into the circular cylinder through the through hole.
[0010] In some embodiments, the transmission component adopts gear meshing mode for transmission, which includes:
[0011] A piston gear is sleeved on the piston rod, and the piston gear can rotate circumferentially on the circular cylinder; the inner hole of the piston gear is a threaded hole, and the piston rod is an externally threaded rod, and the two are connected by threads for transmission;
[0012] The power gear is connected to the power component and meshes with the piston gear. After the power component rotates, it drives the piston gear to rotate circumferentially through the power gear. Under the action of the transmission thread, the circumferential rotational motion of the piston gear is converted into the axial linear motion of the piston assembly.
[0013] In some embodiments, the bottom surface of the piston gear is provided with a protruding receiving cavity, and a bearing is installed between the receiving cavity and the circumferential surface of the circular cylinder, so that the piston gear can rotate circumferentially relative to the circular cylinder.
[0014] In some embodiments, the upper region of the circular cylinder is provided as a stepped structure, and the inner ring of the bearing is fitted onto the upper region of the circular cylinder in a tight fit manner. The step in the upper region forms a lower stop, which axially limits the inner ring of the bearing. The circular cylinder protrudes from the bearing, and a groove is provided on the outer circumferential surface of the protruding part. A retaining ring is engaged in the groove, and the retaining ring fits together with the inner ring of the bearing to axially limit the inner ring of the bearing.
[0015] In some embodiments, the receiving cavity is configured as a stepped structure, and the receiving cavity is fitted onto the outer ring of the bearing in a tight fit manner. The step in the receiving cavity forms an upper stop, which axially limits the inner ring of the bearing. The receiving cavity protrudes from the bearing, and a groove is provided on the inner circumferential surface of the protruding part. A retaining ring is engaged in the groove, and the retaining ring fits together with the outer ring of the bearing to axially limit the outer ring of the bearing.
[0016] In some embodiments, the power component is a drive motor, the housing of the drive motor is fixed to the upper part of the motor bracket, and the power gear is mounted on the output shaft of the drive motor and can rotate circumferentially following the output shaft; the lower part of the motor bracket is fixed to the base plate, and the base plate is integrally formed or welded with the circular cylinder to form a cylinder seat.
[0017] In some embodiments, the inner hole of the power gear is connected to the output shaft of the drive motor by a spline, which restricts the relative circumferential rotation between the two; the output shaft has a groove near the top surface of the power gear, in which a retaining ring is engaged, and the retaining ring fits against the power gear to restrict the axial movement of the power gear.
[0018] Secondly, this utility model provides a dispensing system, comprising:
[0019] The aforementioned filling device has a liquid output conduit connected to its through-hole;
[0020] The liquid tank is connected to the through-hole of the filling device via a liquid inlet conduit;
[0021] A two-position check valve, consisting of two check valves; one check valve is connected in series in the liquid output conduit, and the other check valve is connected in series in the liquid input conduit.
[0022] In a third aspect, the utility model provides a slewing mechanism, including slewing bearing, slewing platform and above -mentioned filling system, liquid output conduit's export arrangement is on the gear of slewing bearing.
[0023] In a fourth aspect, the utility model provides an engineering machinery, including above -mentioned slewing mechanism.
[0024] The utility model has the advantages of:
[0025] The utility model provides a kind of filling device, realizes reset cycle using the accurate control rotation number of servo motor;It is automatically supplemented in the grease in cylinder using the working principle of hydraulic check valve;It avoids the problem that gear wears too fast caused by missing or not timely adding butter due to human factor. BRIEF DESCRIPTION OF DRAWINGS
[0026] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, but do not constitute undue limitations on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.
[0027] In the drawings:
[0028] Figure 1 It is a structure diagram of a kind of filling device of the utility model;
[0029] Figure 2 It is a sectional view of a kind of filling device of the utility model;
[0030] Figure legend: 6-1, motor support, 6-2, power gear, 6-3, piston gear, 6-4, piston assembly, 6-5, cylinder seat, 6-6, servo motor, 6-7, check ring, 6-8, bearing, 6-9, check ring, 6-10, wear ring, 6-11, O ring.
[0031] Figure 3 It is the structure that a kind of filling system of the utility model is applied to slewing bearing Figure 1 ;
[0032] Figure 4 It is the structure that a kind of filling system of the utility model is applied to slewing bearing Figure 2 .
[0033] The figures are identified as follows: 1, rotary bearing; 2, liquid output conduit; 3, liquid input conduit; 4, two-position check valve; 5, liquid tank; 6, filling device.
[0034] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by reference to a particular embodiment. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.
[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. 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.
[0038] As shown in Figure 1 , Figure 2 The present application provides a filling device, which comprises an axially open end face, another axially closed end face and a hollow circular cylinder body, a piston assembly 6-4, a power component and a transmission component; a through hole is arranged on the radial peripheral surface of the circular cylinder body near the closed axial end face, which is used as the inlet and outlet of the grease; the piston assembly 6-4 is composed of a piston rod and a piston head which are integrally formed or fixedly connected; the piston head is arranged in the circular cylinder body, and an O-ring 6-11 and a wear-resistant ring 6-10 are arranged between the facing peripheral surfaces of the two; the power component is connected with the piston assembly 6-4 through the transmission component, and after providing power to the piston assembly 6-4, it can move linearly and reciprocally in the circular cylinder body; when the piston assembly 6-4 moves towards the through hole, the piston head tightly presses the liquid in the circular cylinder body to flow out of the through hole; when the piston assembly 6-4 moves away from the through hole, the liquid outside is sucked into the circular cylinder body through the through hole.
[0039] The specific structure of the transmission component is further described as follows.
[0040] As shown in Figure 1 , Figure 2 , the transmission component adopts gear meshing mode for transmission, which comprises a piston gear 6-3 and a power gear 6-2; the piston gear 6-3 is sleeved on the piston rod, and the piston gear 6-3 can rotate circumferentially on the circular cylinder; the inner hole of the piston gear 6-3 is a threaded hole, and the piston rod is an externally threaded rod, and the two are connected for transmission through threads; the power gear 6-2 is connected with the power component, and is engaged with the piston gear 6-3; after the power component rotates, the piston gear 6-3 is driven to rotate circumferentially by the power gear 6-2, and under the action of the transmission thread, the circumferential rotational motion of the piston gear 6-3 is converted into the axial linear motion of the piston assembly 6-4.
[0041] Further scheme, as shown in Figure 2 , the bottom surface of the piston gear 6-3 is provided with an outwardly convex accommodating cavity, and a bearing 6-8 is installed between the accommodating cavity and the circumferential surface of the circular cylinder facing each other, so that the piston gear 6-3 can rotate circumferentially relative to the circular cylinder.
[0042] Further scheme, as shown in Figure 2 , the upper region of the circular cylinder is provided with a stepped structure, the inner ring of the bearing 6-8 is sleeved on the upper region of the circular cylinder in a tight fit manner, and the step of the upper region constitutes a lower stop for axially limiting the inner ring of the bearing 6-8; the circular cylinder protrudes from the bearing 6-8, and a groove is provided on the outer circumferential surface of the protruding part, and a retainer ring 6-9 is clamped in the groove, and the retainer ring 6-9 is in close contact with the inner ring of the bearing 6-8 to axially limit the inner ring of the bearing 6-8; the accommodating cavity is provided with a stepped structure, and the accommodating cavity is sleeved on the outer ring of the bearing 6-8 in a tight fit manner, and the step in the accommodating cavity constitutes an upper stop for axially limiting the inner ring of the bearing 6-8; the accommodating cavity protrudes from the bearing 6-8, and a groove is provided on the inner circumferential surface of the protruding part, and a retainer ring 6-7 is clamped in the groove, and the retainer ring 6-7 is in close contact with the outer ring of the bearing 6-8 to axially limit the outer ring of the bearing 6-8.
[0043] The specific structure of the power component is further described as follows.
[0044] As shown in Figure 1 , Figure 2As shown, the power component is a servo motor 6-6. The housing of the servo motor 6-6 is fixed to the upper part of the motor bracket 6-1. The power gear 6-2 is mounted on the output shaft of the servo motor 6-6 and can rotate circumferentially following the output shaft. The lower part of the motor bracket 6-1 is fixed to the base plate. The base plate and the circular cylinder are integrally formed or welded to form the cylinder seat 6-5.
[0045] Further options, such as Figure 1 , Figure 2 As shown, the inner hole of the power gear 6-2 is connected to the output shaft of the servo motor 6-6 by a spline, which restricts the relative circumferential rotation of the two. The output shaft has a groove near the top surface of the power gear 6-2, in which a retaining ring is engaged. The retaining ring fits against the power gear 6-2, restricting the axial movement of the power gear 6-2.
[0046] It should be noted that the aforementioned power gear 6-2, piston gear 6-3, etc., can be made of materials such as nylon. This is because the loading load is extremely small, and the requirements for gear materials are low; using nylon can eliminate the need for lubrication and reduce costs. Alternatively, metal gears with external lubrication devices can be used, but this will not be elaborated upon here. Similarly, the bearing 6-8 between the piston assembly 6-4 and the cylinder block 6-5 can also be a self-lubricating bearing, or an additional lubrication structure can be added, but this will not be elaborated upon here.
[0047] like Figure 3 , Figure 4 As shown, this utility model also provides a filling system, including the above-mentioned filling device 6, liquid tank 5 and two-position check valve 4. A liquid output conduit 2 is connected to the through hole of the filling device 6; the liquid tank 5 is connected to the through hole of the filling device 6 through the liquid input conduit 2; the two-position check valve 4 consists of two check valves; one check valve is connected in series in the liquid output conduit 2, and the other check valve is connected in series in the liquid input conduit 3.
[0048] The following is a preferred embodiment of the above-described refueling system.
[0049] like Figure 3 , Figure 4 As shown, a rotary mechanism includes a rotary bearing, a rotary platform, and the aforementioned filling system. The outlet of the liquid output conduit 2 is arranged on the gear of the rotary bearing 1. The servo motor 6-6 is connected to the vehicle controller, and the vehicle controller sets the interval opening time of the servo motor 6-6 to achieve the effect of automatic filling.
[0050] The following describes the process of lubricating the slewing bearing with grease using the aforementioned lubrication system.
[0051] The servo motor 6-6 is started after receiving the instruction of the vehicle controller, and the positive rotation number N drives the power gear 6-2 to rotate, the power gear 6-2 drives the piston gear 6-3 to rotate, the transmission thread in the inner circle of the piston gear 6-3 drives the piston assembly 6-4 to move downward, the butter in the cylinder seat 6-5 enters the pipeline, and is overflowed from the outlet installed above the gear of the slewing bearing 7 through the two-way valve 4 and dripped on the gear of the slewing bearing 1, at this time, the passage to the liquid tank 5 is in the closed state. The servo motor 6-6 continues to rotate in the reverse direction after rotating in the positive direction for the rotation number N, and the piston assembly 6-4 can be reset to the initial position upward in the same way, at this time, the butter in the liquid tank 5 is sucked into the cylinder seat 6-5 through the two-way valve 4 and the pipeline, at this time, the passage to the slewing bearing 7 in the two-way valve 4 is in the closed state, so that a working cycle is completed.
[0052] The engineering machinery provided by the utility model is described below, and the engineering machinery described below can be correspondingly referred to the slewing mechanism described above.
[0053] The engineering machinery provided by the utility model can comprise the slewing mechanism described in any one of the above embodiments.
[0054] The beneficial effects achieved by the engineering machinery provided by the utility model are consistent with the beneficial effects achieved by the slewing mechanism provided by the utility model, and thus will not be described here.
[0055] It should be noted that the above engineering machinery can be an excavator; of course, the utility model can be used in agricultural machinery in addition to being used in the field of engineering machinery.
[0056] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the specification.
[0057] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments but not other features, the combination of features of different embodiments also means that it is within the protection scope of the utility model and forms different embodiments. For example, in the above embodiments, those skilled in the art can use in a combined manner according to the known technical solutions and the technical problems to be solved by the present application.
[0058] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any skilled person in the art can make minor changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and equivalent embodiments with equivalent changes are equivalent. Any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application shall still fall within the scope of the present application.
Claims
1. A filling device, characterized in that include: A circular cylinder with one axial end face open and the other axial end face closed and hollow, wherein a through hole is provided on the radial circumferential surface of the circular cylinder near the closed axial end face, and the through hole is used as an inlet and outlet for liquid. The piston assembly consists of an integrally formed or fixedly connected piston rod and piston head; the piston head is arranged in a circular cylinder, and a sealing component is provided between the two facing circumferential surfaces. The power component and the transmission component are connected to the piston assembly through the transmission component. The power component provides power to the piston assembly, enabling it to move linearly back and forth in the circular cylinder. When the piston assembly moves toward the through hole, the piston head presses the liquid inside the circular cylinder to flow out through the through hole. When the piston assembly moves away from the through hole, external liquid is drawn into the circular cylinder through the through hole.
2. A filling device according to claim 1, characterized in that The transmission component uses gear meshing for transmission and includes: A piston gear is mounted on the piston rod and is capable of circumferential rotation on a circular cylinder. The inner hole of the piston gear is a threaded hole, and the piston rod is an externally threaded rod. The two are connected by threads for transmission. The power gear is connected to the power component and meshes with the piston gear. After the power component rotates, it drives the piston gear to rotate circumferentially through the power gear. Under the action of the transmission thread, the circumferential rotational motion of the piston gear is converted into the axial linear motion of the piston assembly.
3. The dispensing device according to claim 2, characterized in that: The bottom surface of the piston gear is provided with a convex receiving cavity, and a bearing is installed between the receiving cavity and the circumferential surface of the circular cylinder, so that the piston gear can rotate circumferentially relative to the circular cylinder.
4. The dispensing device according to claim 3, characterized in that: The upper part of the circular cylinder is designed with a stepped structure. The inner ring of the bearing is fitted onto the upper part of the circular cylinder in a tight fit manner. The step in the upper part forms a lower stop, which axially limits the inner ring of the bearing. The circular cylinder protrudes from the bearing. A groove is provided on the outer circumference of the protruding part of the circular cylinder. A retaining ring is engaged in the groove. The retaining ring fits against the inner ring of the bearing, which axially limits the inner ring of the bearing.
5. A dispensing device according to claim 3, characterized in that: The receiving cavity is designed with a stepped structure. The receiving cavity is fitted onto the outer ring of the bearing in a tight fit manner. The step in the receiving cavity forms an upper stop, which axially limits the inner ring of the bearing. The receiving cavity protrudes from the bearing. A groove is provided on the inner circumference of the protruding part of the receiving cavity. A retaining ring is engaged in the groove. The retaining ring fits together with the outer ring of the bearing, which axially limits the outer ring of the bearing.
6. The dispensing device according to claim 2, characterized in that: The power component is a drive motor. The housing of the drive motor is fixed to the upper part of the motor bracket. The power gear is mounted on the output shaft of the drive motor and can rotate circumferentially following the output shaft. The lower part of the motor bracket is fixed to the base plate, and the base plate and the circular cylinder are integrally formed or welded together to form a cylinder seat.
7. The filling device according to claim 6, characterized in that: the inner hole of the power gear is connected with the output shaft of the driving motor through a spline, limiting the circumferential relative rotation of the two; the output shaft is provided with a groove near the top surface of the power gear, and a retainer ring is clamped in the groove, which is in close contact with the power gear, limiting the axial movement of the power gear.
8. A refueling system characterized by, comprising: the filling device according to any one of claims 1 to 7, a liquid output conduit is connected to the through hole of the filling device; a liquid tank connected to the through hole of the filling device through a liquid input conduit; a two-way check valve composed of two check valves; one check valve is connected in series in the liquid output conduit, and the other check valve is connected in series in the liquid input conduit.
9. A slewing mechanism comprising a slewing bearing and a slewing platform, characterized in that: the filling system according to claim 8 is further included, and the outlet of the liquid output conduit is arranged on the gear of the slewing bearing.
10. An engineering machine, characterized in that: the slewing mechanism according to claim 9 is included.