Lower frame supporting chain wheel protection device and engineering machinery
By designing a wrap-around track roller protection device, the problem of debris accumulation on the top of the longitudinal beam of the underframe of a mining hydraulic excavator is solved, ensuring the normal operation of the track roller, extending its service life and simplifying maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU XCMG MINING MACHINERY CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-04-14
AI Technical Summary
The top of the longitudinal beam of the underframe of a mining hydraulic excavator is prone to accumulating dirt, coal, and other debris, which can cause the track rollers to run poorly, wear out severely, and affect their service life.
Design a protective device for undercarriage track rollers, including a first protective plate and a second protective plate. The enclosed structure isolates the track rollers in a semi-enclosed space to prevent the accumulation of debris.
It effectively prevents debris such as mud and coal from affecting the operation of the track rollers, reduces the frequency of cleaning, extends the service life of the track rollers, and simplifies the maintenance process.
Smart Images
Figure CN224117397U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a protective device for undercarriage track rollers, belonging to the field of engineering machinery technology. Background Technology
[0002] Currently, during the operation of mining hydraulic excavators, the top of the longitudinal beams of the underframe is prone to accumulating dirt, coal, and other debris, requiring regular cleaning by operators. If not cleaned for a long time, the accumulated dirt and coal will increase, and with the influence of moisture, the deposits will solidify, making cleaning difficult. Furthermore, the solidified dirt between the top of the longitudinal beam and the track roller will cause the track roller to malfunction, resulting in abnormal wear and significantly reducing its service life. Summary of the Invention
[0003] This utility model provides a protective device for the undercarriage track roller, which can effectively separate the track roller from solidified deposits such as mud and coal, ensuring the normal operation of the track roller and preventing it from being affected by the accumulation of mud, coal and other debris.
[0004] This utility model is achieved according to the following technical solution:
[0005] In a first aspect, this utility model provides a protective device for undercarriage track rollers, comprising:
[0006] The first protective device consists of two protective plates. The two protective plates are symmetrically connected to the top plate of the longitudinal beam in front of and behind the track roller along the length of the longitudinal beam. The protective plates are close to the track roller and extend upward from the top plate of the longitudinal beam to the top of the track roller. The two protective plates form a wrapping structure to protect the track roller inside.
[0007] The second protective device consists of two protective plates, which are symmetrically connected at the front and rear of the chain support along the length of the longitudinal beam. The protective plates are close to the chain wheel and extend upward from the top plate of the longitudinal beam to the top of the chain wheel. The two protective plates form a wrap-around structure to protect the chain wheel inside.
[0008] Wherein, the dimension of the second protective plate along the length of the longitudinal beam is smaller than that of the first protective plate along the length of the longitudinal beam, and the second protective plate is used to adapt to the chain rollers that cannot be installed due to limited surrounding installation space.
[0009] In some embodiments, the protective plate one includes:
[0010] The base is detachably fixed to the top plate of the longitudinal beam, and the base extends along the width direction of the longitudinal beam to the chain support seats on both sides to seal the gap between the chain wheel and the top plate of the longitudinal beam.
[0011] An arc-shaped plate is fixed on the base. The arc of the arc-shaped plate matches the arc of the chain wheel. The arc-shaped plates on both sides form a "()" structure to wrap around the chain wheel.
[0012] In some embodiments, the base includes:
[0013] Two opposing vertical plates are arranged on the top plate of the longitudinal beam and are respectively attached to the support brackets on both sides;
[0014] The curved plate is installed across the two upright plates and fixed together after being attached to the two upright plates. The lower part of the outer arc surface of the first arc plate is fixed together with the top of the installed curved plate.
[0015] A horizontal plate is positioned between two vertical plates located below the mounting bend plate and is fixed together with the mounting bend plate and the two vertical plates.
[0016] In some embodiments, the mounting plate has at least one mounting hole on the mounting surface parallel to the top plate of the longitudinal beam, and a threaded seat corresponding to the mounting hole is fixed on the top plate of the longitudinal beam. The bolt cooperates with the mounting hole and the threaded seat to fix the base on the top plate of the longitudinal beam.
[0017] In some embodiments, at least one stiffener is fixed between the outer arc surface of the arc plate and the upper surface of the mounting bend plate. The stiffener extends downward from the upper region of the arc plate to the mounting surface of the mounting bend plate. During the extension process, the stiffener, except for the part at the connection between the arc plate and the mounting bend plate, is in contact with the arc plate and the mounting bend plate.
[0018] In some embodiments, the second protective plate includes:
[0019] Mounting plate, extending along the width of the longitudinal beam to the chain carrier seats on both sides, and detachably fixed together with the chain carrier seats on both sides, is used to seal the gap between the chain carrier wheel and the top plate of the longitudinal beam;
[0020] The second arc-shaped plate has its lower outer arc surface fixed to the top of the mounting plate. The arc of the second arc-shaped plate is adapted to the arc of the chain wheel. The two arc-shaped plates on both sides form a "()" structure to wrap around the chain wheel.
[0021] In some embodiments, the chain support is fixed with a threaded seat II on the side facing the mounting plate. The mounting plate is provided with mounting holes corresponding to the threaded seat II. Bolts cooperate with the mounting holes and the threaded seat II to fix the mounting plate to the chain supports on both sides.
[0022] In some embodiments, at least one rib plate is fixed between the outer arc surface of the second arc plate and the outer side surface of the mounting plate. The rib plate extends downward from the upper region of the second arc plate to the lower region of the mounting plate. During the extension process, the rib plate is in contact with the second arc plate and the mounting plate after the portion at the connection between the second arc plate and the mounting plate is removed.
[0023] In some embodiments, both the first protective plate and the second protective plate are symmetrical welded structural components.
[0024] Secondly, this utility model provides an engineering machine, including an H-frame, longitudinal beams, tracks, and the aforementioned underframe track roller protection device.
[0025] The beneficial effects of this utility model are:
[0026] This utility model provides a protective device for undercarriage track rollers. This device, together with the track roller seat, isolates the track roller in a semi-enclosed space, effectively preventing debris such as mud and coal from entering, ensuring the normal operation of the track roller and preventing abnormal wear. Furthermore, the use of this protective device reduces the frequency of cleaning the longitudinal beams due to obstruction of the track roller by debris, reducing cleaning and maintenance time. Moreover, the protective device is located on the outside of the longitudinal beam, making it easier to disassemble and repair. This protective device effectively solves the problem of abnormal wear of track rollers due to obstruction by debris in the market, and to a certain extent, guarantees the service life of the track rollers. Attached Figure Description
[0027] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0028] In the attached diagram:
[0029] Figure 1 This is a schematic diagram of the structure of the protective plate of this utility model;
[0030] Figure 2 This is a schematic diagram of the protective plate of this utility model.
[0031] Figure 3 This is a schematic diagram showing the arrangement of the threaded seat of this utility model on the longitudinal beam;
[0032] Figure 4 This is a schematic diagram of the installation of the protective device of this utility model on the longitudinal beam.
[0033] Attached diagram labels: 1. Mounting bend plate, 2. Vertical plate, 3. Horizontal plate, 4. Arc plate one, 5. Rib plate one, 6. Rib plate two, 7. Mounting plate, 8. Arc plate two, 9. Track roller, 10. Threaded seat two, 11. Track carrier seat, 12. Threaded seat one, 13. Track carrier seat, 14. Protective plate two, 15. Bolt, 16. Longitudinal beam, 17. H-frame, 18. Track, 19. Protective plate one.
[0034] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] like Figure 4As shown, a protective device for a lower frame track roller includes a protective device one and a protective device two. The protective device one consists of two protective plates 19, which are symmetrically connected along the length of the longitudinal beam 16 to the top plates of the longitudinal beam in front of and behind the track roller 9. The protective plates 19 are close to the track roller 9 and extend upwards from the top plate of the longitudinal beam to the top of the track roller 9. The two protective plates 19 form a wrapping structure to protect the track roller 9 inside. The protective device two consists of two protective plates 14. The second protective plate 14 is symmetrically connected to the front and rear of the chain support 13 along the length of the longitudinal beam 16; the second protective plate 14 is close to the chain wheel 9, and extends upward from the top plate of the longitudinal beam to the top of the chain wheel 9. The two protective plates 14 on both sides form a wrap-around structure to protect the chain wheel 9 inside; wherein, the dimension of the second protective plate 14 along the length of the longitudinal beam 16 is smaller than the dimension of the first protective plate 19 along the length of the longitudinal beam 16, and the second protective plate 14 is used to adapt to the chain wheel 9 that cannot be installed due to the small surrounding installation space.
[0039] As can be seen from the above, this utility model is mainly used to protect the track rollers, ensuring their normal operation and preventing them from being affected by dirt, coal, and other debris accumulated on the top of the longitudinal beam. Through this protective device structure, the track rollers can operate normally, reducing the frequency of cleaning debris from the top plate of the longitudinal beam due to obstruction, thus reducing cleaning and maintenance time. This protective device structure avoids the problem of track rollers not operating smoothly due to obstruction, effectively reducing the frequency of abnormal wear on the track rollers and ensuring their service life. This protective device adopts a modular design and is assembled on the outside of the longitudinal beam, facilitating installation and disassembly by maintenance and service personnel.
[0040] The following provides a further explanation of the specific structure of the aforementioned protective plate.
[0041] like Figure 1 As shown, the protective plate 19 includes a base and an arc plate 4; the base is detachably fixed to the top plate of the longitudinal beam, and the base extends along the width direction of the longitudinal beam 16 to the chain support seats 13 on both sides, which are used to seal the gap between the chain wheel 9 and the top plate of the longitudinal beam; the arc plate 4 is fixed on the base, and the curvature of the arc plate 4 is adapted to the curvature of the chain wheel 9. The arc plates 4 on both sides form a "()" structure to wrap the chain wheel 9.
[0042] Further plans will continue to be considered. Figure 1As shown, the base includes two upright plates 2, a mounting bend plate 1, and a horizontal plate 3; the two opposing upright plates 2 are arranged on the top plate of the longitudinal beam and are respectively attached to the support brackets 13 on both sides; the mounting bend plate 1 spans across the two upright plates 2 and is fixed together after being attached to the two upright plates 2, and the lower part of the outer arc surface of the arc plate 4 is fixed together with the top of the mounting bend plate 1; the horizontal plate 3 is arranged between the two upright plates 2 located below the mounting bend plate 1 and is fixed together with the mounting bend plate 1 and the two upright plates 2.
[0043] Further options, such as Figure 1 , Figure 3 As shown, the mounting plate 1 has at least one mounting hole on the mounting surface parallel to the top plate of the longitudinal beam. A threaded seat 12 corresponding to the mounting hole is fixed on the top plate of the longitudinal beam. The bolt 15 cooperates with the mounting hole and the threaded seat 12 to fix the base on the top plate of the longitudinal beam.
[0044] The preferred solution will continue to be referenced. Figure 1 As shown, the mounting plate 1 has two mounting holes, which are oblong holes, allowing for adjustment of the front and rear positions of the protective plate 19 during installation.
[0045] Further plans will continue to be considered. Figure 1 As shown, at least one stiffener 5 is fixed between the outer arc surface of the arc plate 4 and the upper surface of the mounting bend plate 1. The stiffener 5 extends downward from the upper region of the arc plate 4 to the mounting surface of the mounting bend plate 1. During the extension process, the stiffener 5, except for the part at the connection between the arc plate 4 and the mounting bend plate 1, is in contact with the arc plate 4 and the mounting bend plate 1.
[0046] The preferred solution will continue to be referenced. Figure 1 As shown, two stiffening plates 5 are symmetrically welded between the mounting bend plate 1 and the arc plate 4 to support the arc plate 4.
[0047] The following provides a further explanation of the specific structure of the aforementioned protective plate two.
[0048] like Figure 2 As shown, the second protective plate includes a mounting plate 7 and an arc-shaped plate 8. The mounting plate 7 extends along the width of the longitudinal beam 16 to the chain support seats 11 on both sides and is detachably fixed together with the chain support seats 11 on both sides to seal the gap between the chain wheel 9 and the top plate of the longitudinal beam. The lower part of the outer arc surface of the arc-shaped plate 8 is fixed together with the top of the mounting plate 7. The arc of the arc-shaped plate 8 is adapted to the arc of the chain wheel 9. The arc-shaped plates 8 on both sides form a "()" structure to wrap around the chain wheel 9.
[0049] Further options, such as Figure 2 , Figure 3As shown, the chain support 11 has a threaded seat 2 10 fixed on the side facing the mounting plate 7. The mounting plate 7 has mounting holes corresponding to the threaded seat 2 10. The bolt 15 cooperates with the mounting holes and the threaded seat 2 10 to fix the mounting plate 7 on the chain support 11 on both sides.
[0050] Further plans will continue to be considered. Figure 2 As shown, at least one stiffener plate 26 is fixed between the outer arc surface of the arc plate 28 and the outer side surface of the mounting plate 7. The stiffener plate 26 extends downward from the upper region of the arc plate 28 to the lower region of the mounting plate 7. During the extension process, the stiffener plate 26 fits against the arc plate 28 and the mounting plate 7, except for the part at the connection between the arc plate 28 and the mounting plate 7.
[0051] The preferred solution will continue to be referenced. Figure 1 As shown, two stiffening plates 6 are symmetrically welded between the mounting plate 7 and the arc-shaped plate 8 to support the arc-shaped plate 8.
[0052] Preferred solutions, such as Figure 1 , Figure 2 As shown, both protective plate 19 and protective plate 2 14 are symmetrical welded structural components; threaded seat 12 is welded to the longitudinal beam 16; threaded seat 2 10 is welded to the chain support seat 11.
[0053] The following describes the installation process of the aforementioned undercarriage track roller protection device:
[0054] like Figure 4 As shown, each track roller 9 requires either one protective device 1 (i.e., two protective plates 19) or one protective device 2 (i.e., two protective plates 14). The choice between protective device 1 (i.e., two protective plates 19) and protective device 2 (i.e., two protective plates 14) depends on the available space around the track roller 9. If there is sufficient space around the track roller 9, it is recommended to install protective device 1 (i.e., two protective plates 19), as it has a more robust structure and is easier to install and remove, but it is limited by space. If space is limited around the track roller 9, protective device 2 (i.e., two protective plates 14) can be installed. Both protective devices 1 and 2 are mounted to the longitudinal beam 16 using bolts 15.
[0055] In summary, during excavator operation, the top of the longitudinal beam often accumulates dirt, coal, and other debris, severely affecting the operation of the track rollers. Especially when the debris solidifies, the track rollers become blocked and stop moving, causing abnormal wear and significantly impacting their service life. This invention provides a track roller protection device for the underframe. This device, combined with the track roller support, isolates the track rollers in a semi-enclosed space, effectively preventing dirt, coal, and other debris from entering, ensuring normal track roller operation and preventing abnormal wear. Furthermore, this device reduces the frequency of cleaning the longitudinal beam due to debris obstruction, reducing cleaning and maintenance time. Moreover, its location on the outside of the longitudinal beam makes it easier to disassemble and repair. This device effectively solves the problem of abnormal wear caused by debris obstruction in the track rollers, thus guaranteeing their service life to a certain extent.
[0056] The following describes the engineering machinery provided by this utility model. The engineering machinery described below can be referred to in correspondence with the undercarriage track roller protection device described above.
[0057] This utility model provides an engineering machine, including an H-frame, longitudinal beams, tracks, and the underframe track roller protection device described in any of the above embodiments.
[0058] The beneficial effects achieved by the engineering machinery provided by this utility model are consistent with the beneficial effects achieved by the undercarriage support chain wheel protection device provided by this utility model, so they will not be repeated here.
[0059] It should be noted that the aforementioned construction machinery can be tracked cranes, tracked excavators, tracked pump trucks, or other tracked construction machinery.
[0060] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0061] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.
[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A protective device for undercarriage track rollers, characterized in that, include: The first protective device consists of two protective plates. The two protective plates are symmetrically connected to the top plate of the longitudinal beam in front of and behind the track roller along the length of the longitudinal beam. The protective plates are close to the track roller and extend upward from the top plate of the longitudinal beam to the top of the track roller. The two protective plates form a wrapping structure to protect the track roller inside. The second protective device consists of two protective plates, which are symmetrically connected at the front and rear of the chain support along the length of the longitudinal beam. The protective plates are close to the chain wheel and extend upward from the top plate of the longitudinal beam to the top of the chain wheel. The two protective plates form a wrap-around structure to protect the chain wheel inside. Wherein, the dimension of the second protective plate along the length of the longitudinal beam is smaller than that of the first protective plate along the length of the longitudinal beam, and the second protective plate is used to adapt to the chain rollers that cannot be installed due to limited surrounding installation space.
2. The undercarriage track track protection device according to claim 1, characterized in that, The protective plate includes: The base is detachably fixed to the top plate of the longitudinal beam, and the base extends along the width direction of the longitudinal beam to the chain support seats on both sides to seal the gap between the chain wheel and the top plate of the longitudinal beam. An arc-shaped plate is fixed on the base. The arc of the arc-shaped plate matches the arc of the chain wheel. The arc-shaped plates on both sides form a "()" structure to wrap around the chain wheel.
3. The undercarriage track roller protection device according to claim 2, characterized in that, The base includes: Two opposing vertical plates are arranged on the top plate of the longitudinal beam and are respectively attached to the support brackets on both sides; The curved plate is installed across the two upright plates and fixed together after being attached to the two upright plates. The lower part of the outer arc surface of the first arc plate is fixed together with the top of the installed curved plate. A horizontal plate is positioned between two vertical plates located below the mounting bend plate and is fixed together with the mounting bend plate and the two vertical plates.
4. The undercarriage track track protection device according to claim 3, characterized in that: The mounting plate has at least one mounting hole on the mounting surface parallel to the top plate of the longitudinal beam. A threaded seat corresponding to the mounting hole is fixed on the top plate of the longitudinal beam. The bolt cooperates with the mounting hole and the threaded seat to fix the base on the top plate of the longitudinal beam.
5. A protective device for undercarriage track rollers according to claim 3, characterized in that: At least one stiffener is fixed between the outer arc surface of the arc plate and the upper surface of the mounting bend plate. The stiffener extends downward from the upper region of the arc plate to the mounting surface of the mounting bend plate. During the extension process, the stiffener fits into the arc plate and the mounting bend plate after the part where the arc plate and the mounting bend plate are connected.
6. The undercarriage track track protection device according to claim 1, characterized in that, The second protective plate includes: Mounting plate, extending along the width of the longitudinal beam to the chain carrier seats on both sides, and detachably fixed together with the chain carrier seats on both sides, is used to seal the gap between the chain carrier wheel and the top plate of the longitudinal beam; The second arc plate has its outer arc surface lower part fixed to the top of the mounting plate. The arc of the second arc plate is adapted to the arc of the chain wheel. The two arc plates on both sides form a "()" structure to wrap around the chain wheel.
7. A protective device for undercarriage track rollers according to claim 6, characterized in that: The chain support has a threaded seat II fixed on the side facing the mounting plate. The mounting plate has mounting holes corresponding to the threaded seat II. The bolts cooperate with the mounting holes and the threaded seat II to fix the mounting plate to the chain supports on both sides.
8. A protective device for undercarriage track rollers according to claim 6, characterized in that: At least one rib plate is fixed between the outer arc surface of the second arc plate and the outer side surface of the mounting plate. The rib plate extends downward from the upper region of the second arc plate to the lower region of the mounting plate. During the extension process, the rib plate is in contact with the second arc plate and the mounting plate after the part where the second arc plate connects to the mounting plate.
9. A protective device for undercarriage track rollers according to claim 1, characterized in that: Both the first protective plate and the second protective plate are symmetrical welded structural components.
10. An engineering machine, comprising an H-frame, longitudinal beams, and tracks, characterized in that: It also includes the undercarriage track roller protection device as described in any one of claims 1 to 9.