Anti-collision reinforced walking speed reducer, disassembly and assembly method and hydraulic excavator

Abstract

The invention discloses an anti-collision reinforced walking speed reducer, a dismounting and mounting method and a hydraulic excavator. A reinforced protective cover is arranged on the periphery of a speed reducer body and comprises a plurality of split protective covers, each split protective cover comprises an outer arc plate and a side plate which are perpendicularly connected, and the outer arc plates are arranged on the periphery of the speed reducer body; every two adjacent speed reducer bodies are connected together through a connecting plate, and the side plates and the end faces of the speed reducer bodies are fixed together through protective cover mounting bolts. The problem that the walking speed reducer loses efficacy due to the fact that the speed reducer is impacted by foreign objects can be solved; the protective cover can be independent of the speed reducer body, precision parts in the speed reducer can still be guaranteed not to be exposed after the protective cover is detached, completeness of the speed reducer is guaranteed, and replacement of the protective cover when the protective cover is damaged is facilitated. The bolt connection mode of the protective cover enables the protective cover to be convenient to disassemble, maintenance of the speed reducer and reuse of the protective cover are facilitated, the situation that the protective cover needs to be replaced synchronously when the speed reducer is maintained due to the fact that the protective cover is not damaged is avoided, and personnel and property safety is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, in particular to an anti-collision reinforced travel reducer, a disassembly and assembly method and a hydraulic excavator. Background Art

[0002] Travel reducer is the actuator of excavator travel, and is used for excavator crawler drive. Travel reducer is an ideal drive device for wheeled or crawler transmission vehicles and other mobile equipment. Travel reducer has withstood the test in harsh environment and demonstrated its high performance. However, in the harsh working environment for a long time, travel reducer needs to take a series of measures to ensure its stable operation and extend its service life.

[0003] At present, in harsh working environments, damage to the travel reducer caused by impacts from external objects such as stones is one of the main ways in which the travel reducer fails. The travel reducer with planetary frame output is on the inner side of the crawler of the hydraulic excavator, and the existing travel reducer with ring gear output is exposed on the outer side of the crawler without protection. Therefore, it is necessary to take corresponding protective measures to protect the travel reducer, improve the travel reducer's ability to cope with harsh environments, and prevent it from being damaged. At the same time, it is also necessary to consider the convenience of regular maintenance and replacement to facilitate subsequent operations by staff. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide an anti-collision reinforced travel reducer, a disassembly and assembly method and a hydraulic excavator which are convenient to use and have good effects.

[0005] The present invention is implemented with the following technical scheme: a collision-proof reinforced walking reducer, comprising a reducer body, wherein the reducer body is provided with a reinforced protective cover on the periphery of the reduction device, the reinforced protective cover comprises a plurality of split protective covers, the split protective covers comprise an outer arc plate and a side plate vertically connected, the outer arc plate is arranged on the periphery of the reducer body, the outer arc plate is an arc-shaped plate that fits the curvature of the periphery of the reducer body, two adjacent outer arc plates are connected together by a connecting plate, the side plate is fixed to the end face of the reducer body by protective cover mounting bolts, a gasket is provided between the protective cover mounting bolts and the side plate, a rear end cover is provided on the end face of the reducer body, a pad is provided between the side plate and the rear end cover, after the split protective cover is installed, the protective cover mounting bolts sequentially connect the gasket, the side plate, the pad, the rear end cover and the reduction device.

[0006] It is further provided that: groove I and groove II are respectively arranged on both sides of the outer arc plate, a plurality of bolt mounting holes connected with the connecting plate are arranged on the groove II, and the groove I is welded with the connecting plate.

[0007] The connecting plate is an arc-shaped plate, and the connecting plate is connected with the outer arc plate through connecting plate mounting bolts.

[0008] An inner arc plate is fixed on the inner side of the outer arc plate, and the inner arc plate and the outer arc plate are concentric arc plates.

[0009] The side plate is fan-shaped and is provided with bolt mounting holes for the protective cover mounting bolts to pass through. Semicircular grooves are provided at both ends of the side plate, and the area surrounded by two adjacent semicircular grooves avoids the refueling port, oil drain port and oil level observation port on the rear end cover.

[0010] The side plate is provided with reinforcing ribs I, sleeves and reinforcing ribs II, the sleeves are arranged at the bolt mounting holes, the reinforcing ribs I are arc-shaped and concentric with the outer arc plate, the two reinforcing ribs II connect the reinforcing ribs I and the outer arc plate together, and the outer edge of the outer arc plate is in the same plane with the reinforcing ribs I, sleeves and reinforcing ribs II.

[0011] The cushion block is provided with a cushion block through hole, and the cushion block through hole and the bolt mounting hole are matched with the protective cover mounting bolt with a large clearance.

[0012] The rear end cover is provided with a rear end cover through hole for passing the protective cover mounting bolt, and the rear end cover through hole is a countersunk hole, and the countersunk hole is used for placing a cushion block.

[0013] A method for disassembling and assembling an anti-collision reinforced travel reducer, comprising installing a reinforced protective cover and disassembling the reinforced protective cover: When installing the reinforced protective cover: S1. Place the pad on the corresponding mounting bolt countersunk hole of the rear cover, and align the bolt mounting hole of the split protective cover with the pad through hole; S2. Pass the protective cover mounting bolts through the washers, split protective cover, pads, rear end cover and speed reducer. At this time, it is not necessary to fully tighten the protective cover mounting bolts; S3. After all the remaining split protective covers are installed, fine-tune the position of the split protective covers through the bolt installation holes on the side panels and the pads and the pad holes, so that the inner arc plate of the split protective cover is close to the inner gear ring of the reduction gear; S4. Tighten the mounting bolts of the protective cover; S5. Place the connecting plate in slots I and II of the split protective cover, align the bolt holes, fix one end of the connecting plate to one end of the split protective cover with the connecting plate mounting bolts, and install the remaining connecting plates in sequence; S6. Fix the other end of the connecting plate to the other end of the split protective cover by welding. At this time, each split protective cover is close to the inner gear ring of the reduction gear; When disassembling the reinforced protective cover, first remove the mounting bolts of the connecting plate, separate the split protective cover, and then remove the mounting bolts of the protective cover, and the reinforced protective cover can be completely removed.

[0014] The present invention also provides a hydraulic excavator, including an anti-collision reinforced travel reducer and a method for disassembling and assembling the anti-collision reinforced travel reducer.

[0015] The present invention has the following advantages: the anti-collision reinforced travel reducer, disassembly and assembly method and hydraulic excavator of the present invention can realize the anti-collision of the travel reducer, mainly protect the reducer housing and the exposed bolts of the reducer, and reduce the problem of foreign objects hitting the reducer and causing the travel reducer to fail; the protective cover can be independent of the reducer body, and after the protective cover is disassembled, it can still ensure that the precision parts inside the reducer are not exposed, thereby ensuring the integrity of the reducer and facilitating the replacement of the protective cover when it is damaged; at the same time, the bolt connection method of the protective cover also makes it easy to disassemble the protective cover, which is beneficial to the maintenance of the reducer and the reuse of the protective cover, and there is no need to replace the protective cover simultaneously when repairing the reducer due to damage to the non-protective cover, thereby ensuring the safety of personnel and property. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0017] In the attached picture: Figure 1 It is an exploded view of the overall structure and the connecting plate of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a rear view of the anti-collision reinforced travel reducer of the present invention; Figure 4 For the present invention Figure 2 A partial enlarged view of point Ⅰ in FIG. Figure 5 It is a schematic diagram of the rear end cover structure of the present invention; Figure 6 is a cross-sectional view of the rear end cover of the present invention; Figure 7 The split protective cover of the present invention is three-dimensional Figure 1 ; Figure 8 The split protective cover of the present invention is three-dimensional Figure 2 ; Fig. 9 The split protective cover of the present invention is three-dimensional Figure 3 ; Fig.10 An exploded view of the split protective cover of the present invention; Fig.11 It is a schematic diagram of the structure of the outer arc plate of the present invention; Fig.12 It is a schematic diagram of the side plate structure of the present invention; Fig.13 It is a cross-sectional view of the split protective cover of the present invention; Fig.14 It is a schematic diagram of the connecting plate structure of the present invention. In the figure: 1. reducer body, 2. reinforced protective cover, 3. gasket, 4. protective cover mounting bolts, 5. cushion block, 6. connecting plate, 7. connecting plate mounting bolts, 8. split protective cover, 9. oil drain plug, 10. oil filling plug, 11. liquid level observation plug, 101, rear end cover, 102, primary inner gear ring, 103, secondary inner gear ring, 501, cushion block through hole, 601, connecting plate mounting bolt through hole, 8 01, outer arc plate, 802, side plate, 803, reinforcement rib Ⅰ, 804, sleeve, 805, reinforcement rib Ⅱ, 806, inner arc plate, 80101, groove Ⅰ, 80102, groove Ⅱ, 80103, threaded hole, 80201, semicircular groove, 80202, bolt mounting hole, 10101, rear end cover through hole, 10102, oil drain port, 10103, refueling port, 10104, oil level observation port.

[0018] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0020] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figures 1 to 14The anti-collision reinforced travel reducer shown in the figure includes a reducer body 1, the reducer body 1 is provided with a reinforced protective cover 2 on the periphery of the reduction device, the reinforced protective cover 2 includes a plurality of split protective covers 8, the split protective cover 8 includes an outer arc plate 801 and a side plate 802 connected vertically, the outer arc plate 801 is arranged on the periphery of the reducer body 1, the outer arc plate 801 is an arc plate that fits the curvature of the outer periphery of the reducer body 1, and two adjacent outer arc plates 801 are connected together by a connecting plate 6, and the outer arc A threaded hole 80103 connected to the connecting plate 6 is provided on the plate 801. The side plate 802 is fixed to the end face of the reducer body 1 by the protective cover mounting bolts 4. A gasket 3 is provided between the protective cover mounting bolts 4 and the side plate 802. A rear end cover 101 is provided on the end face of the reducer body 1. A cushion block 5 is provided between the side plate 802 and the rear end cover 101. After the split protective cover 8 is installed, the protective cover mounting bolts 4 sequentially connect the gasket 3, the side plate 802, the cushion block 5, the rear end cover 101 and the reducer. The anti-collision reinforced walking reducer of the present invention is provided with a reinforced protective cover outside the reducer to protect the reducer, mainly protecting the reducer casing and the exposed bolts of the reducer, reducing the problem of failure of the walking reducer caused by foreign objects hitting the reducer. Specifically, the reinforced protective cover is a split type, and a plurality of split protective covers are combined together to wrap around the outer periphery of the reducer, and adjacent split protective covers are connected together by connecting plates, so as to ensure that the protective cover is tightly connected to the reducer. The number of split protective covers can be four or six, which can be specifically set according to needs; the split protective cover includes two components, an outer arc plate and a side plate, wherein the outer arc plate is in contact with the outer periphery of the reducer, and adjacent outer arc plates are connected by connecting plates so that the outer arc plate is tightly attached to the periphery of the reducer, and the side plates are vertically connected to the outer arc plates, and the side plates are fixed to the end face of the reducer by protective cover mounting bolts, and the side plates are mounted on the protective cover. A washer is provided between the bolts, wherein a rear end cover is provided on the end face of the reducer, and a pad is added between the protective cover and the rear end cover of the reducer, so that the contact surface between the protective cover and the rear end cover is flat, thereby ensuring the installation accuracy of the protective cover and facilitating installation; after the side plate is installed through the protective cover mounting bolts, the protective cover mounting bolts pass through the washers, the split protective cover, the pads, the rear end cover and the reducer in sequence, and the travel reducer can be a multi-stage planetary reduction structure, or a multi-stage parallel reduction mechanism, or a parallel stage plus planetary reduction structure. When the reducer is a two-stage planetary reduction structure, after the protective cover mounting bolts pass through the rear end cover, they continue to pass through the first-stage internal gear ring, and then are fixed in the second-stage internal gear ring to fix the side plate; the protective cover of the present invention can be independent of the reducer body, and after the protective cover is disassembled, it can still ensure that the precision parts inside the reducer are not exposed, thereby ensuring the integrity of the reducer and facilitating the replacement of the protective cover when it is damaged.

[0023] like Figures 1 to 11The illustrated anti-collision reinforced travel reducer has grooves Ⅰ 80101 and Ⅱ 80102 on both sides of the outer arc plate 801, and grooves Ⅱ 80102 are provided on the grooves Ⅱ 80102, which are connected to the connecting plate 6. The grooves Ⅰ 80101 and the connecting plate 6 are welded together. The connecting plate 6 is an arc-shaped plate, which is connected to the outer arc plate 801 by connecting plate mounting bolts 7. The outer arc plate of the present invention is formed by bending a steel plate, and grooves Ⅰ and Ⅱ are provided on both sides of the outer arc plate. The connecting plate is attached to the grooves Ⅰ and Ⅱ of two adjacent split protective covers. One side of the connecting plate is fastened to the groove Ⅱ side of the split protective cover by bolts, and the other side of the connecting plate is fixed to the groove Ⅰ side of the split protective cover by welding, so that the entire protective cover is clamped on the travel reducer body, wherein the connecting plate is arc-shaped, and the connecting plate mounting bolt through hole 601 is a countersunk hole, and the connecting plate mounting bolt head is completely sunken in the countersunk hole to prevent foreign objects from scratching it. When in use, place the connecting plate in slots Ⅰ and Ⅱ of the split protective cover, align the bolt holes, and use the connecting plate mounting bolts to fix one end of the connecting plate to one end of the split protective cover. Install the remaining connecting plates in turn, and finally fix the other end of the connecting plate to the other end of the split protective cover by welding. In this way, each split protective cover can be close to the secondary inner gear ring. The secondary inner gear ring has a certain supporting effect on the split protective cover and prevents foreign matter from entering the inside of the protective cover.

[0024] like Figures 7 to 11 In the illustrated anti-collision reinforced travel reducer, an inner arc plate 806 is fixed to the inner side of the outer arc plate 801, and the inner arc plate 806 is a concentric arc plate with the outer arc plate 801. The inner arc plate is welded to the inner side of the outer arc plate of the present invention, and since the protective cover is relatively long, the inner arc plate is welded to the inner side of the split protective cover to ensure installation accuracy and reduce installation difficulty.

[0025] like Figures 7 to 12 The side plate 802 of the present invention is a fan-shaped reinforced travel reducer. The side plate 802 is provided with bolt mounting holes 80202 for the protective cover mounting bolts 4 to pass through. Semicircular grooves 80201 are provided at both ends of the side plate 802. The area surrounded by the two adjacent semicircular grooves 80201 avoids the refueling port 10103, the oil drain port 10102 and the oil level observation port 10104 on the rear end cover 101. The side plate of the present invention is a flat plate in an arc shape. The side plate has bolt mounting holes. The dividing circle is concentric with the arc plate. Semicircular grooves are provided at both ends of the side plate. After the two split protective covers are installed, the protective covers avoid the refueling port, the oil drain port and the oil level observation port through the adjacent semicircular grooves.

[0026] like Figures 7 to 10The illustrated embodiment is a collision-proof reinforced travel reducer, wherein the side plate 802 is provided with a reinforcing rib I803, a sheath 804 and a reinforcing rib II805, the sheath 804 is arranged at the bolt mounting hole 80202, the reinforcing rib I803 is arc-shaped and concentric with the outer arc plate 801, the two reinforcing ribs II805 connect the reinforcing rib I803 and the outer arc plate 801 together, and the outer edge of the outer arc plate 801 is in the same plane as the reinforcing rib I803, the sheath 804 and the reinforcing rib II805. The side panel of the present invention is welded with reinforcing ribs I and II, wherein the reinforcing rib I is arc-shaped and concentric with the outer arc panel, and a groove is formed on the reinforcing rib II for welding, and the inner arc panel is concentric with the outer arc panel to increase the strength of the protective cover and make it more collision-resistant. Specifically, the outer arc panel and the side panel are connected together by welding, and after welding, the end of the outer arc panel protrudes beyond the side of the side panel by a distance, and the distance is the thickness of the reinforcing ribs. The reinforcing rib I is welded on the side panel, and the reinforcing rib II is welded on the side panel and connected with the reinforcing rib I and the outer arc panel. After being fixed, the reinforcing ribs I and II are flush with the outer arc panel. In order to prevent the bolt heads for installing the protective cover and the reducer from being hit on the outside, a sleeve is added at the bolt through hole of the side panel of the split protective cover, and the sleeve is welded on the side panel and is concentric with the bolt through hole for installing the split protective cover. This structure can avoid direct impact from external forces.

[0027] like Figure 4 and Fig.12 In the illustrated anti-collision reinforced travel reducer, the pad 5 is provided with a pad through hole 501, and the pad through hole 501 and the bolt mounting hole 80202 are matched with the protective cover mounting bolt 4 with a large clearance. The pad of the present invention is provided with a pad through hole for passing the bolt, and the pad through hole needs to be one level larger than the normal bolt through hole. After the split protective cover is fully installed on the reducer body, the position of the split protective cover is fine-tuned through the larger bolt through holes on the side plate and the pad, so that the inner arc plate of the split protective cover is close to the secondary inner gear ring, and then the protective cover mounting bolts are tightened, and the mounting bolt heads are all sunk in the sheath, which can ensure that the protective cover mounting bolts are not damaged when hit by foreign objects.

[0028] like Figure 5In the illustrated anti-collision reinforced travel reducer, the rear end cover 101 is provided with a rear end cover through hole 10101 for passing the protective cover mounting bolt 4, and the rear end cover through hole 10101 is a countersunk hole for placing a pad 5. The rear end cover of the travel reducer of the present invention is provided with a rear end cover through hole 10101, a refueling port 10102, an oil drain port 10103 and an oil level observation port 10104, wherein the rear end cover through hole is a countersunk hole for placing a gasket, in addition, a part of the rear end cover through holes are only used to fix the rear end cover and the primary internal gear ring 102 on the secondary internal gear ring 103, and the other part of the rear end cover through holes fix the split protective cover, the rear end cover and the primary internal gear ring on the secondary internal gear ring, the refueling port and the oil drain port are symmetrically arranged, the oil level observation port is in the middle and upper position, and the refueling port, the oil drain port and the oil level observation port are respectively provided with a refueling plug 10, an oil drain plug 9 and a liquid level observation plug 11, and the thread specifications of the refueling port, the oil drain port and the oil level observation port are consistent.

[0029] A method for disassembling and assembling an anti-collision reinforced travel reducer, comprising installing a reinforced protective cover and disassembling the reinforced protective cover: When installing the reinforced protective cover: S1, place the cushion block 5 on the corresponding mounting bolt countersunk hole of the rear end cover 101, and align the bolt mounting hole of the split protective cover 8 with the cushion block through hole 501; S2. Pass the protective cover mounting bolt 4 through the washer 3, the split protective cover 8, the cushion block 5, the rear end cover 101 and the speed reducer. At this time, the protective cover mounting bolt 4 does not need to be fully tightened; S3. After all the remaining split protective covers 8 are installed, the position of the split protective covers 8 is finely adjusted through the bolt installation holes 80202 on the side plate 802 and the cushion block 5 and the cushion block through holes 501, so that the inner arc plate 806 of the split protective cover 8 is in close contact with the inner gear ring of the reduction device; S4, tighten the protective cover mounting bolt 4; S5. Place the connecting plate 6 in the slot I 80101 and the slot II 80102 of the split protective cover 8, align the bolt holes, and use the connecting plate mounting bolt 7 to fix one end of the connecting plate 6 to one end of the split protective cover 8, and install the remaining connecting plates in sequence; S6. Fix the other end of the connecting plate 6 to the other end of the split protective cover 8 by welding. At this time, each split protective cover 8 is close to the inner gear ring of the reduction device; When disassembling the reinforced protective cover, first remove the connecting plate mounting bolts 7, separate the split protective cover 8, and then remove the protective cover mounting bolts 4, and the reinforced protective cover can be completely removed.

[0030] The disassembly and assembly method of the anti-collision reinforced travel reducer of the present invention is specifically as follows: When installing the protective cover, first place the gasket on the corresponding mounting bolt countersunk hole of the rear cover, align the bolt mounting hole of the split protective cover with the gasket, and then pass the mounting bolt through the washer, split protective cover, gasket, rear cover, and primary inner gear ring, and then fix it in the secondary inner gear ring. At this time, there is no need to tighten the mounting bolts completely. After the rest of the split protective covers are installed, fine-tune the position of the split protective cover through the larger bolt holes on the side panels and gaskets, so that the inner arc plate of the split protective cover is close to the secondary inner gear ring, and then tighten the protective cover mounting bolts, and then place the connecting plate in slots Ⅰ and Ⅱ of the split protective cover to align the bolt holes, and use bolts. Fix one end of the connecting plate to one end of the split protective cover, install the remaining connecting plates in turn, and finally fix the other end of the connecting plate to the other end of the split protective cover by welding. In this way, each split protective cover can be close to the secondary inner gear ring. The secondary inner gear ring has a certain supporting effect on the split protective cover and prevents foreign matter from entering the inside of the protective cover. When disassembling, only the mounting bolts of the connecting plate need to be removed to separate the split protective cover. Compared with the connection plates that are fixed at both ends by welding, it is more convenient to disassemble, which is conducive to the maintenance of the reducer and the reuse of the protective cover, and it is not necessary to replace the protective cover simultaneously when repairing the reducer due to damage to non-protective cover.

[0031] A hydraulic excavator comprises the above-mentioned anti-collision reinforced travel reducer and a method for disassembling and assembling the anti-collision reinforced travel reducer.

[0032] The anti-collision reinforced travel reducer, disassembly and assembly method and hydraulic excavator of the present invention can achieve anti-collision of the travel reducer, mainly protect the reducer housing and the exposed bolts of the reducer, reduce the problem of foreign objects hitting the reducer and causing the travel reducer to fail, the protective cover can be independent of the reducer body, after the protective cover is removed, it can still ensure that the precision parts inside the reducer are not exposed, ensure the integrity of the reducer, and facilitate the replacement of the protective cover when it is damaged. At the same time, the bolt connection method of the protective cover also makes the protective cover easy to disassemble, which is beneficial to the maintenance of the reducer and the reuse of the protective cover. It is not necessary to replace the protective cover simultaneously when repairing the reducer due to damage to the non-protective cover, and the safety of personnel and property can be guaranteed.

[0033] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0034] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0035] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. An anti-collision reinforced travel reducer, Features: The invention comprises a reducer body (1), wherein the reducer body (1) is provided with a reinforced protective cover (2) on the periphery of the reduction device, wherein the reinforced protective cover (2) comprises a plurality of split protective covers (8), wherein the split protective covers (8) comprise an outer arc plate (801) and a side plate (802) connected vertically, wherein the outer arc plate (801) is arranged on the periphery of the reducer body (1), wherein the outer arc plate (801) is an arc-shaped plate that fits the arc of the periphery of the reducer body (1), and two adjacent outer arc plates (801) are connected together via a connecting plate (6). The side plate (802) is fixed to the end face of the reducer body (1) by means of a protective cover mounting bolt (4); a washer (3) is provided between the protective cover mounting bolt (4) and the side plate (802); a rear end cover (101) is provided on the end face of the reducer body (1); a cushion block (5) is provided between the side plate (802) and the rear end cover (101); after the split protective cover (8) is installed, the protective cover mounting bolt (4) sequentially connects the cushion block (3), the side plate (802), the cushion block (5), the rear end cover (101) and the reducer.

2. The anti-collision reinforced travel reducer as claimed in claim 1, Features: A groove I (80101) and a groove II (80102) are respectively provided on both sides of the outer arc plate (801); a plurality of bolt mounting holes (80202) connected to the connecting plate (6) are provided on the groove II (80102); and the groove I (80101) and the connecting plate (6) are welded together.

3. The anti-collision reinforced travel reducer as claimed in claim 2, Features: The connecting plate (6) is an arc-shaped plate, and the connecting plate (6) is connected to the outer arc plate (801) via connecting plate mounting bolts (7).

4. The anti-collision reinforced travel reducer as claimed in claim 1, Features: An inner arc plate (806) is fixed on the inner side of the outer arc plate (801), and the inner arc plate (806) and the outer arc plate (801) are concentric arc plates.

5. The anti-collision reinforced travel reducer as claimed in claim 1, Features: The side plate (802) is fan-shaped, and is provided with bolt mounting holes (80202) for the protective cover mounting bolts (4) to pass through. Semicircular grooves (80201) are provided at both ends of the side plate (802), and the area surrounded by two adjacent semicircular grooves (80201) avoids the refueling port (10103), the oil drain port (10102) and the oil level observation port (10104) on the rear end cover (101).

6. The anti-collision reinforced travel reducer as claimed in claim 5, Features: The side plate (802) is provided with a reinforcing rib I (803), a sheath (804) and a reinforcing rib II (805); the sheath (804) is arranged at the bolt mounting hole (80202); the reinforcing rib I (803) is arc-shaped and concentric with the outer arc plate (801); the two reinforcing ribs II (805) connect the reinforcing rib I (803) and the outer arc plate (801); the outer edge of the outer arc plate (801) is in the same plane as the reinforcing rib I (803), the sheath (804) and the reinforcing rib II (805).

7. The anti-collision reinforced travel reducer as claimed in claim 5, Features: The cushion block (5) is provided with a cushion block through hole (501), and a large clearance fit is formed between the cushion block through hole (501) and the bolt mounting hole (80202) and the protective cover mounting bolt (4).

8. The anti-collision reinforced travel reducer as claimed in claim 1, Features: The rear end cover (101) is provided with a rear end cover through hole (10101) for passing the protective cover mounting bolt (4), and the rear end cover through hole (10101) is a countersunk hole, and the countersunk hole is used to place a cushion block (5).

9. A method for disassembling and assembling the anti-collision reinforced travel reducer according to claim 1, Features: Including installing and removing the reinforced protective cover: When installing the reinforced protective cover: S1, place the cushion block (5) on the corresponding mounting bolt countersunk hole of the rear end cover (101), and align the bolt mounting hole of the split protective cover (8) with the cushion block through hole (501); S2. Pass the protective cover mounting bolts (4) through the washers (3), the split protective cover (8), the cushion blocks (5), the rear end cover (101) and the reduction gear. At this time, it is not necessary to fully tighten the protective cover mounting bolts (4); S3. After all the remaining split protective covers (8) are installed, the position of the split protective covers (8) is finely adjusted through the bolt installation holes (80202) on the side plate (802) and the cushion block (5) and the cushion block through holes (501), so that the inner arc plate (806) of the split protective cover (8) is in close contact with the inner gear ring of the reduction gear; S4, tighten the protective cover mounting bolts (4); S5. Place the connecting plate (6) in the slot I (80101) and slot II (80102) of the split protective cover (8), align the bolt holes, and use the connecting plate mounting bolts (7) to fix one end of the connecting plate (6) to one end of the split protective cover (8), and install the remaining connecting plates in sequence; S6. Fix the other end of the connecting plate (6) to the other end of the split protective cover (8) by welding, so that each split protective cover (8) is in close contact with the inner gear ring of the reduction device; When disassembling the reinforced protective cover, first remove the connecting plate mounting bolts (7), separate the split protective cover (8), and then remove the protective cover mounting bolts (4), and the reinforced protective cover can be completely removed.

10. A hydraulic excavator, Features: It comprises the anti-collision reinforced travel reducer as described in any one of claims 1 to 8 and is disassembled and assembled using the disassembly and assembly method of the anti-collision reinforced travel reducer as described in claim 9.

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