Slewing bearing anti-slip device for engineering machinery and engineering machinery

Abstract

The present invention discloses a slewing bearing anti-slip device for engineering machinery and the engineering machinery. The engineering machinery includes a base and a slewing bearing. The slewing bearing includes an inner ring fixed to the base and an outer ring rotatably disposed on the outer periphery of the inner ring. The bottom of the slewing bearing anti-slip device is used to be fixed to the base, and the top of the slewing bearing anti-slip device is formed with a blocking portion located above the outer ring and used to prevent the outer ring and inner ring from completely separating. The slewing bearing anti-slip device can prevent the outer ring and inner ring of the slewing bearing from completely separating, and also has a simple structure, convenient installation, small space occupation, low cost, and a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a slewing bearing anti-slip device for engineering machinery and the engineering machinery. Background Art

[0002] In construction machinery with rotating booms and other mechanisms, a slewing bearing is required to achieve the desired rotational motion. This bearing is equivalent to an enlarged version of a rolling bearing, consisting of an inner ring, an outer ring, and ball bearings. However, existing construction machinery lacks anti-slip devices for these rotating components. During construction, if the slewing bearing ages, is not promptly maintained, or is subjected to external forces, the inner and outer rings may become detached. This can cause damage to personnel or property, or the slewing bearing or boom of the construction machinery may overturn, resulting in significant economic losses and threats to the personal safety of workers. Summary of the Invention

[0003] The object of the present invention is to provide a slewing bearing anti-slip device for engineering machinery and engineering machinery, which has the advantages of simple structure and preventing the outer ring and inner ring of the slewing bearing from completely falling off.

[0004] To achieve the above-mentioned objectives, the present invention provides, in a first aspect, a slewing bearing anti-slip device for engineering machinery, the engineering machinery comprising a base and a slewing bearing, the slewing bearing comprising an inner ring fixed to the base and an outer ring rotatably arranged on the outer circumference of the inner ring, the bottom of the slewing bearing anti-slip device being fixed to the base, and the top of the slewing bearing anti-slip device being formed with a blocking portion located above the outer ring and used to prevent the outer ring and the inner ring from completely detaching.

[0005] In an embodiment of the present invention, a groove for allowing part of the outer ring to extend laterally is formed on the slewing bearing anti-slip device, the lower side wall of the groove is fixed to the base, and the blocking portion is formed on the upper side wall of the groove.

[0006] In an embodiment of the present invention, the opening of the groove is toward the center of the outer ring.

[0007] In an embodiment of the present invention, the groove is a U-shaped groove.

[0008] In an embodiment of the present invention, the slewing bearing anti-slip device comprises:

[0009] a bent plate, the groove being formed on the bent plate, and a gap being present between the blocking portion and the top surface of the outer ring;

[0010] A distance detector is used to detect the width of the interval;

[0011] The controller is connected to the distance detector for communication and is used to determine whether the outer race has a separation fault according to the width value.

[0012] In an embodiment of the present invention, the slewing bearing anti-slip device further includes an early warning device, which is communicatively connected to the controller and is used to send out an early warning signal.

[0013] In an embodiment of the present invention, the warning device includes at least one of a warning light, a sound announcer and a display screen.

[0014] In an embodiment of the present invention, the slewing bearing anti-slip device further comprises a pressure detector, which is communicatively connected to the controller and is used to detect the pressure value applied to the blocking portion.

[0015] In an embodiment of the present invention, the controller is further configured to:

[0016] When it is determined that the outer ring has a detachment fault, obtain the pressure value;

[0017] Determine the level of the fault according to the pressure value;

[0018] The control warning device sends a warning signal corresponding to the level of the escape fault.

[0019] In an embodiment of the present invention, the controller is further configured to:

[0020] The levels of failure determined based on pressure values ​​include:

[0021] Determine whether the pressure value exceeds the preset pressure range;

[0022] When it is determined that the pressure value does not exceed the preset pressure range, the separation fault is determined to be a first-level fault;

[0023] When it is determined that the pressure value exceeds the preset pressure range, the separation fault is determined to be a secondary fault, and the fault degree of the secondary fault is greater than the fault degree of the primary fault.

[0024] In an embodiment of the present invention, there are multiple slewing bearing anti-slip devices, and the multiple slewing bearing anti-slip devices are evenly distributed along the circumference of the outer ring.

[0025] In an embodiment of the present invention, the controller is further configured to:

[0026] After confirming that the outer ring has disengaged, obtain the width and pressure values ​​of each slewing bearing anti-disengagement device;

[0027] determining a minimum width value among the plurality of width values ​​and a maximum pressure value among the plurality of pressure values;

[0028] The fault location of the detachment fault is determined based on the minimum width value and the maximum pressure value.

[0029] A second aspect of the present invention provides an engineering machine, which includes the above-mentioned slewing support anti-slip device for engineering machinery.

[0030] Through the above technical solution, it can be seen that the bottom and the base of the slewing bearing anti-detachment device are fixed, and a blocking part is formed on the top of the slewing bearing anti-detachment device, which is located above the outer ring and is used to prevent the outer ring and the inner ring from completely separating. When the outer ring jumps significantly relative to the inner ring, the blocking part can prevent the outer ring from continuing to push up and completely separating from the inner ring, thereby avoiding damage to objects and / or casualties, ensuring the personal safety of workers at the construction machinery work site, and also has the advantages of simple structure, easy installation, small space occupation, low cost and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present invention, but do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0032] Figure 1 2. It is a schematic structural diagram of the slewing bearing anti-slip device according to an embodiment of the present invention from a first perspective;

[0033] Figure 2 It is an enlarged schematic diagram of the partial structure of the slewing bearing anti-slip device in the embodiment of the present invention from a first viewing angle;

[0034] Figure 3 2 is a schematic structural diagram of the slewing support anti-slip device according to the embodiment of the present invention from a second perspective;

[0035] Figure 4 2 is a schematic structural diagram of the slewing bearing anti-slip device according to the embodiment of the present invention from a third perspective;

[0036] Figure 5 is an enlarged schematic diagram of the partial structure of the slewing bearing anti-slip device according to the embodiment of the present invention from a third viewing angle;

[0037] Figure 6 2 is a schematic structural diagram of a slewing bearing in an embodiment of the present invention.

[0038] Description of Reference Numerals

[0039] 1 Base 2 Slewing bearing

[0040] 201 inner ring 202 outer ring

[0041] 3 Slewing bearing anti-slip device 301 Bending plate

[0042] 3011 blocking portion 3012 groove

[0043] 302 Distance detector 303 Pressure detector

[0044] 4 Rotating mechanism 5 Mounting seat DETAILED DESCRIPTION

[0045] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0046] In an embodiment of the present invention, a slewing bearing anti-slip device for an engineering machine is provided. The engineering machine in this embodiment is preferably a pump truck (or other mechanical equipment with a slewing function). Specifically, the engineering machine includes a base 1 and a slewing bearing 2, as shown in FIG. Figure 6 As shown, the slewing bearing 2 includes an inner ring 201 fixed to the base 1 and an outer ring 202 rotatably disposed on the outer periphery of the inner ring 201. The inner ring 201 and the outer ring 202 together form a raceway, which is equipped with multiple balls. The outer ring 202 can rotate relative to the inner ring 201 via the balls. The engineering machinery in this embodiment also includes a slewing mechanism 4, which is connected to the outer ring 202. When the pump truck is pumping concrete, it first deploys its boom to deliver concrete. Under the action of the slewing bearing 2, the boom can rotate 360°, achieving 360° full-angle concrete delivery. The base 1 supports the boom and the slewing bearing 2. When the pump truck is delivering concrete, the slewing bearing 2, as a key component of the slewing function, generates a large bending moment due to the bending moment of the boom. If the slewing bearing 2 is not properly maintained or operated incorrectly, or if the slewing bearing 2 is used for a long time, the outer ring 202 of the slewing bearing 2 may become dislodged. In order to solve the above technical problems, the bottom of the slewing bearing anti-slip device 3 in this embodiment is used to be fixed to the base 1, such as Figure 1-Figure 5As shown, a blocking portion 3011 is formed on the top of the slewing bearing anti-separation device 3 and is located above the outer ring 202 and is used to prevent the outer ring 202 and the inner ring 201 from completely separating. When the slewing bearing 2 is in normal working condition, the outer ring 202 rotates relative to the inner ring 201 on a horizontal plane. When the inner ring 201 and / or the outer ring 202 of the slewing bearing 2 malfunction (e.g., due to factors such as overload of the slewing bearing 2, equipment aging, or operational errors, which cause the inner ring 201 and outer ring 202 of the slewing bearing 2 to become loose, or the raceway or balls to wear), the outer ring 202 will jump relative to the inner ring 201, thereby causing at least a portion of the outer ring 202 to push upward relative to the inner ring 201. In severe cases, the slewing bearing 2 may tilt. At this time, the blocking portion 3011 located above the outer ring 202 can prevent the outer ring 202 from continuing to push upward, preventing the outer ring 202 from completely separating from the inner ring 201, thereby preventing the slewing mechanism 4 and / or the boom and other components on the engineering machinery from significantly overturning, thereby avoiding damage to objects and / or casualties, avoiding economic losses, and ensuring the personal safety of workers at the engineering machinery work site.

[0047] In one embodiment of the present invention, a groove 3012 is formed on the slewing bearing anti-slip device 3 for allowing part of the outer ring 202 to extend laterally. The lower side wall of the groove 3012 is fixed to the base 1, and the blocking portion 3011 is formed on the upper side wall of the groove 3012. Furthermore, the blocking portion 3011 in this embodiment is the upper side wall of the groove 3012. The bottom surface of the upper side wall can block the outer ring 202 downward when part of the outer ring 202 is pushed upward relative to the inner ring 201, thereby effectively preventing the outer ring 202 and the inner ring 201 from completely separating.

[0048] In one embodiment of the present invention, the opening of the groove 3012 faces the center of the outer ring 202. This arrangement allows the slewing bearing anti-slip device 3 to be exposed outside the slewing bearing 2, making it easier for staff to observe, maintain and service the slewing bearing anti-slip device 3. In addition, damage to the slewing bearing anti-slip device 3 can be discovered by staff in a timely manner and repaired or replaced.

[0049] In one embodiment of the present invention, the groove 3012 is a U-shaped groove. This structural shape can not only meet the working performance of the groove 3012, but also has the advantages of simple structure and easy production and manufacturing.

[0050] In one embodiment of the present invention, the slewing bearing anti-slip device 3 includes:

[0051] The bending plate 301 has a groove 3012 formed thereon, and a gap exists between the blocking portion 3011 and the top surface of the outer ring 202;

[0052] The distance detector 302 is used to detect the width of the interval;

[0053] The controller (not shown in the figure) is in communication with the distance detector 302 and is used to determine whether the outer ring 202 has a separation fault according to the width value.

[0054] Specifically, the groove 3012 in this embodiment is formed by bending the bent plate 301. During installation, the lower side wall of the bent plate 301 is fixedly connected to the lower end of the base 1 through a fastener (such as a bolt assembly); after the installation is completed, there is a gap between the upper side wall of the bent plate 301 and the top surface of the outer ring 202; further, a mounting hole is formed on the upper side wall of the bent plate 301, and the slewing bearing anti-slip device 3 also includes a mounting seat 5 installed on the bent plate 301 through the above-mentioned mounting hole, and the distance detector 302 is installed on the mounting seat 5.

[0055] When the slewing bearing 2 is in a normal working state, the outer ring 202 will not jump relative to the inner ring 201. At this time, the distance between the top surface of the outer ring 202 and the blocking portion 3011 (i.e., the lower side wall of the bending plate 301) is a fixed value; the distance detector 302 in this embodiment detects the width value of the above-mentioned distance and sends it to the controller, and the controller then compares the above-mentioned width value (e.g., 2mm) with a pre-stored preset width range (e.g., 1mm-3mm). If the width value is within the preset width range, it is determined that the outer ring 202 has not jumped relative to the inner ring 201 (or the amplitude of the jump is very small), that is, it can be determined that the outer ring 202 is in a normal working state at this time; if the width value is not within the preset width range, it is determined that the outer ring 202 has jumped relative to the inner ring 201 to a certain extent, that is, it can be determined that the outer ring 202 has a detachment failure and may be detached from the inner ring 201. This method of detecting whether the outer ring 202 has a detachment failure is relatively simple and easy to implement. It can quickly and accurately detect the detachment failure of the outer ring 202, which is beneficial to avoid the subsequent overturning of the rotating mechanism 4 and / or boom and other components on the engineering machinery.

[0056] In one embodiment of the present invention, the slewing bearing anti-slip device 3 further includes an early warning device (not shown), which is communicatively connected to the controller and configured to issue an early warning signal. Specifically, upon determining that the outer ring 202 has detached, the controller sends a control signal to the early warning device. Upon receiving the signal, the early warning device issues an early warning signal. Upon observing the early warning signal, a worker is informed that the outer ring 202 has detached, allowing for timely repair or replacement of the slewing bearing 2, thereby improving the safety performance of the construction machinery.

[0057] In one embodiment of the present invention, the early warning device includes at least one of a warning light, a sound announcer and a display screen, wherein the warning light can send a warning signal by lighting up; the sound announcer can broadcast a voice indicating that the outer ring 202 has failed to detach; the display screen can display text and / or patterns indicating that the outer ring 202 has failed to detach. The above-mentioned forms of early warning signals are relatively obvious, and can enable the staff to quickly know the fact that the outer ring 202 has failed to detach, so that the staff can repair or replace the slewing bearing 2 in time.

[0058] In one embodiment of the present invention, the slewing bearing anti-slip device 3 further includes a pressure detector 303, which is communicatively connected to the controller and is used to detect the pressure value applied to the blocking portion 3011. Specifically, the pressure detector 303 is also mounted on the mounting base 5 (in this embodiment, the pressure detector 303 and the distance detector 302 are integrated into one body). When the outer ring 202 has not disengaged, or has disengaged but with a small amount of runout, the outer ring 202 will not interfere with the blocking portion 3011, and the pressure value detected by the pressure detector 303 is zero. When the runout of the outer ring 202 is large, the outer ring 202 will interfere with the blocking portion 3011, and the pressure value detected by the pressure detector 303 will increase. Different increases in pressure indicate different levels of disengagement of the outer ring 202. Different levels of disengagement require different subsequent treatment methods. For example, a low level of disengagement can be resolved through maintenance, while a high level of disengagement can be resolved by replacing the slewing bearing 2.

[0059] In one embodiment of the present invention, the controller is further configured to:

[0060] When it is determined that the outer ring 202 has a detachment fault, a pressure value is obtained;

[0061] Determine the level of the fault according to the pressure value;

[0062] The control warning device sends a warning signal corresponding to the level of the fault, wherein,

[0063] The levels of failure determined based on pressure values ​​include:

[0064] Determine whether the pressure value exceeds the preset pressure range;

[0065] When it is determined that the pressure value does not exceed the preset pressure range, the separation fault is determined to be a first-level fault;

[0066] When it is determined that the pressure value exceeds the preset pressure range, the separation fault is determined to be a secondary fault, and the fault degree of the secondary fault is greater than the fault degree of the primary fault.

[0067] Specifically, it can be determined based on the detection result of the distance detector 302 whether the outer ring 202 has a detachment fault. After determining that the outer ring 202 has a detachment fault, the controller controls the pressure detector 303 to detect the pressure value of the blocking part 3011. The pressure detector 303 then compares the detected pressure value with the pre-stored preset pressure range. If the pressure value does not exceed the preset pressure range, it is determined that the detachment fault of the outer ring 202 is a first-level fault. Then the controller controls the early warning device to issue a first-level early warning signal (such as a light with a lighter color, a voice broadcasting a first-level fault, or a text or image displaying a first-level fault). Similarly, the greater the degree of the detachment failure, the greater the pressure on the blocking portion 3011. Therefore, if the pressure value exceeds the preset pressure range, the detachment failure caused by the outer ring 202 is determined to be a secondary failure. Thereafter, the controller controls the early warning device to issue a secondary early warning signal (such as lighting a darker light, broadcasting a voice indicating a secondary failure, or displaying text or patterns indicating a secondary failure), so that the staff can execute corresponding measures (such as replacing the slewing support) after seeing the secondary early warning signal.

[0068] In one embodiment of the present invention, there are multiple slewing bearing anti-slip devices 3, and the multiple slewing bearing anti-slip devices 3 are evenly distributed along the circumference of the outer ring 202. Specifically, in this embodiment, there are four slewing bearing anti-slip devices 3, and the four slewing bearing anti-slip devices 3 are evenly distributed along the circumference of the outer ring 202. If the outer ring 202 and the inner ring 201 separate, causing the slewing support to tilt, the distance detector 302 of the slewing bearing anti-slip device 3 in the tilting direction detects a zero width value and a maximum pressure value detected by the pressure sensor. In other words, based on the characteristics of these values, the direction of the disengagement failure (i.e., the tilting direction) can be determined, which facilitates personnel to quickly implement protective measures. Furthermore, the number of slewing bearing anti-slip devices 3 in this embodiment is not limited to four. The greater the number of slewing bearing anti-slip devices 3, the more accurate the determination of the disengagement failure direction.

[0069] In one embodiment of the present invention, the controller is further configured to:

[0070] After determining that the outer ring 202 has a detachment fault, obtain the width value and pressure value of each slewing bearing anti-detachment device 3;

[0071] determining a minimum width value among the plurality of width values ​​and a maximum pressure value among the plurality of pressure values;

[0072] The fault location of the detachment fault is determined based on the minimum width value and the maximum pressure value.

[0073] Specifically, in this embodiment, the number of slewing support anti-slip devices 3 is preferably four. When determining the fault location of the detachment fault, it is necessary to first obtain the detection results of the four distance detectors 302 and the four pressure detectors 303, and then determine the maximum pressure value among the four pressure values ​​and the slewing support anti-slip device corresponding to the maximum pressure value (at this time, the pressure values ​​detected by the other three pressure detectors 303 also reach their respective maximum values), and then determine whether the width value corresponding to the slewing support anti-slip device (that is, the slewing support anti-slip device corresponding to the maximum pressure value) is zero. If it is zero, it is determined that the location of the slewing support anti-slip device (that is, the slewing support anti-slip device corresponding to the maximum pressure value) is the fault location of the detachment fault.

[0074] Another embodiment of the present invention provides a novel engineering machine, which includes the slewing support anti-slip device for engineering machinery in the above embodiment.

[0075] The present invention provides a slewing bearing anti-slipping device for engineering machinery and engineering machinery. The bottom of the slewing bearing anti-slipping device is fixed to a base, and a blocking portion is formed on the top of the slewing bearing anti-slipping device, which is located above the outer ring and is used to prevent the outer ring and the inner ring from completely separating. When the outer ring jumps relatively significantly relative to the inner ring, the blocking portion can prevent the outer ring from continuously pushing up, thereby preventing the outer ring and the inner ring from completely separating, avoiding damage to objects and / or casualties, and ensuring the personal safety of workers at the work site of the engineering machinery. The device also has the advantages of simple structure, convenient installation, small space occupation, low cost, and a wide range of applications.

[0076] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention may be subjected to various simple modifications, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

[0077] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0078] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0079] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A slewing bearing anti-slip device for engineering machinery, the engineering machinery comprising a base (1) and a slewing bearing (2), the slewing bearing (2) comprising an inner ring (201) fixed to the base (1) and an outer ring (202) rotatably arranged on the outer peripheral side of the inner ring (201), characterized in that: The bottom of the slewing support anti-slip device (3) is used to be fixed to the base (1), and the top of the slewing support anti-slip device (3) is formed with a blocking portion (3011) located above the outer ring (202) and used to prevent the outer ring (202) and the inner ring (201) from completely separating. The slewing support anti-slip device (3) is also formed with a groove (3012) for allowing part of the outer ring (202) to extend laterally. The lower side wall of the groove (3012) is fixed to the base (1), and the blocking portion (3011) is formed on the upper side wall of the groove (3012). 2) has an opening facing the center of the outer ring (202), the groove (3012) is a U-shaped groove, the slewing bearing anti-slip device (3) further comprises a bending plate (301), a distance detector (302) and a controller, the groove (3012) is formed on the bending plate (301), and there is a gap between the blocking portion (3011) and the top surface of the outer ring (202); the distance detector (302) is used to detect the width value of the gap; the controller is communicatively connected to the distance detector (302) and is used to determine whether the outer ring (202) has a detachment fault based on the width value.

2. The slewing bearing anti-slip device for engineering machinery according to claim 1, characterized in that: The slewing bearing anti-slip device (3) further comprises an early warning device, which is communicatively connected to the controller and is used to send out an early warning signal.

3. The slewing bearing anti-slip device for engineering machinery according to claim 2, characterized in that: The early warning device includes at least one of a warning light, a sound announcer and a display screen.

4. The slewing bearing anti-slip device for engineering machinery according to claim 2, characterized in that: The slewing bearing anti-slip device (3) further comprises a pressure detector (303), wherein the pressure detector (303) is communicatively connected to the controller and is used to detect the pressure value applied to the blocking portion (3011).

5. The slewing bearing anti-slip device for engineering machinery according to claim 4, characterized in that: The controller is further configured to: When it is determined that the outer ring (202) has the detachment fault, obtaining the pressure value; determining a level of the disconnection fault according to the pressure value; The warning device is controlled to issue a warning signal corresponding to the level of the escape fault.

6. The slewing bearing anti-slip device for engineering machinery according to claim 5, characterized in that: The controller is further configured to: Determining the level of the disconnection fault according to the pressure value includes: Determining whether the pressure value exceeds a preset pressure range; When it is determined that the pressure value does not exceed the preset pressure range, determining that the separation fault is a primary fault; When it is determined that the pressure value exceeds the preset pressure range, the separation fault is determined to be a secondary fault, and the fault degree of the secondary fault is greater than the fault degree of the primary fault.

7. The slewing bearing anti-slip device for engineering machinery according to claim 5, characterized in that: The number of the slewing support anti-slip devices (3) is multiple, and the multiple slewing support anti-slip devices (3) are evenly distributed along the circumference of the outer ring (202).

8. The slewing bearing anti-slip device for engineering machinery according to claim 7, characterized in that: The controller is further configured to: After determining that the outer ring (202) has the disengagement fault, obtaining a width value and a pressure value of each slewing bearing anti-disengagement device (3); determining a minimum width value among the plurality of width values ​​and a maximum pressure value among the plurality of pressure values; A fault occurrence direction of the separation fault is determined according to the minimum width value and the maximum pressure value.

9. An engineering machine, characterized in that: The engineering machinery includes the slewing support anti-slip device for engineering machinery according to any one of claims 1 to 8.

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