A new adjustable bearing seat for pontoon tensioning wheels

Abstract

The utility model discloses amphibious excavator component technical field, concretely relates to a new type adjustable bearing seat for floating box tensioning wheel, and the seat body is connected with the single side journal of tensioning wheel through bearing, and the seat body can support tensioning wheel rotation and drive tensioning wheel horizontal movement. It also includes base, and the base is detachably installed on the support column through fastening bolt, and the support column is fixedly connected with the floating box, the base is strip -shaped, is provided with vertical mounting hole, and the mounting hole is located below the seat body and exists hollow area of taking and placing bolt between the seat body, the base, the support column is located in the vertical projection plane of seat body away from the one side of floating box, and the base moves fastening to any allowable position, even if chain board exceeds the outside surface of support column, also will not contact support column. The utility model improves the installation structure and support mode, can reduce the length of support column, avoids friction, interference chain board, and the stress structure is more stable, and is not easy to shake and loosen.

Description

Technical Field

[0001] This utility model belongs to the technical field of amphibious excavator components, specifically relating to a novel adjustable bearing seat for a float tensioner wheel. Background Technology

[0002] Amphibious excavators, also known as water excavators, boat excavators, or wetland excavators, are a type of specialized engineering machinery designed for complex working conditions such as wetlands, swamps, shallow water areas, and tidal flats. They can operate on land like ordinary excavators, while also maintaining stable operation in shallow water, tidal flats, or soft soil.

[0003] As disclosed in our invention patents CN113585385A (An Amphibious Equipment Chassis and Amphibious Excavator) and CN217623832U (An Integrated Molded Track Chain Plate), the amphibious excavator differs from ordinary excavators. It adopts a float-type track chassis with a sealed float structure. The track chassis is wide and has strong buoyancy, which can distribute the weight of the machine and prevent it from sinking into silt. The tracks are equipped with chain plates to enhance adhesion to soft soil and wetlands.

[0004] The amphibious excavator's floating tracked chassis is similar to that of a regular excavator, mainly composed of fixed wheels, track rollers, carrier rollers, and tensioner rollers. (See attached instruction manual.) Figure 1 , 2 As shown, the tensioner pulley adjusts the track tension to ensure smooth chassis operation. When the track is too loose or too tight and needs adjustment, or when the number of chain links changes resulting in a change in length, the bearing housing supporting the tensioner pulley needs to be moved horizontally. This allows adjustment of the horizontal distance between the tensioner pulley and the drive pulley (fixed pulley) to achieve the desired tension. However, existing adjustable bearing housings have the following problems that urgently need improvement:

[0005] 1. Since adjustable bearing housings mostly adopt an inverted T-shaped structure, the support column supporting the bearing housing needs to reserve some installation space, thus exceeding the bearing housing. When the distance between the bearing housing and the float box is adjusted to the minimum, the track chain plate will rub against the support column when it shifts, damaging the support column and the chain plate.

[0006] 2. Our company has designed and developed a floating box track chassis with extended chain plates, which makes the movement more stable and less prone to debris getting tangled at the fixed wheel and tension wheel. However, the excessive length of the support column of the support bearing seat will cause interference, and the structure of the support column is limited by the inverted T-shaped structure of the adjustable bearing seat and cannot be shortened.

[0007] 3. Due to the harsh working environment and heavy load of water excavators, the tensioning wheel is subjected to variable forces. The existing adjustable bearing housing is easily affected by the movement direction and axial force of the tensioning wheel. After long-term use, the fastening bolts may loosen, causing shaking or even falling off, which will affect the operation. Utility Model Content

[0008] To address the aforementioned shortcomings of existing technologies, this invention aims to solve the problem that the existing adjustable bearing housing structure causes friction and interference between the support column and the chain plate, leading to damage and hindering the extension of the chain plate. Furthermore, the adjustable bearing housing is prone to wobbling and loosening, affecting the operation of the float tensioner. This invention provides a novel adjustable bearing housing for the float tensioner, improving the installation structure and support method. This reduces the length of the support column, avoids friction and interference with the chain plate, and provides a more stable stress-bearing structure, making it less prone to wobbling and loosening.

[0009] To achieve the above objectives, this utility model provides a novel adjustable bearing housing for a float tensioner wheel, comprising:

[0010] The base is connected to the single-sided journal of the tensioner wheel via a bearing. The base supports the rotation of the tensioner wheel and drives its horizontal movement.

[0011] It also includes a base, which is detachably mounted on the support column by fastening bolts. The support column is fixedly connected to the pontoon. The base is elongated and has vertical mounting holes. The base and the support column, on the side away from the pontoon, are both located within the vertical projection plane of the base body.

[0012] The base can be moved and secured to any permissible position without contacting the support column, even if the chain plate extends beyond the outer side of the support column.

[0013] According to another embodiment of the present invention or any of the foregoing embodiments, in the adjustable bearing housing, one of the mounting holes is located below the housing body and there is a hollow area between it and the housing body for placing and removing bolts. The pedestal, housing body, and base are connected by multiple columns. This type of adjustable bearing housing has a relatively high height, requiring the support columns to be lowered.

[0014] According to another embodiment of this utility model or any of the foregoing embodiments, the adjustable bearing seat has a seat body fixed on a base. A side plate is provided on the side of the base, and mounting holes are also provided on the side plate. A corresponding protrusion is provided on the support column, and the side plate can be locked onto the protrusion on the support column using bolts. The platform and the base are connected by a column. This type of adjustable bearing seat has a lower height, the same as that of a traditional bearing seat, and does not require modification of the support column position. Only a protrusion perpendicular to the main body needs to be added to the support column to support the side plate. This structure eliminates the need for an extension block, and the locked side plate increases the resistance to tension wheel push-pull.

[0015] According to another embodiment of the present invention or any of the foregoing embodiments, the adjustable bearing seat has a telescopic screw disposed on the upper middle part of the side of the seat body. The extension length of the telescopic screw is adjusted by screwing, and the end of the telescopic screw abuts against the side of the float box.

[0016] According to another embodiment of the present invention or any of the foregoing embodiments, an adjustable bearing seat is provided on the side of the seat body. The seat is L-shaped, with a countersunk hole on the vertical inner side and an arc-shaped groove on the upper inner surface of the seat. A sleeve is inserted into the arc-shaped groove and the countersunk hole. The sleeve is detachably fixed to the seat by a U-shaped clamp and has a threaded hole inside. The telescopic screw cooperates with the sleeve, and the end of the sleeve has an external hexagonal structure for easy screwing.

[0017] According to another embodiment of the present invention or any of the foregoing embodiments, the adjustable bearing seat has extension blocks on both sides of the base located directly below the seat plate. The extension blocks increase the local width of the base and prevent the axial force of the tensioning wheel from causing the seat body and base to flip.

[0018] According to another embodiment of the present invention or any of the foregoing embodiments, the adjustable bearing housing has two or more oblong holes.

[0019] According to another embodiment of the present invention or any of the foregoing embodiments, the adjustable bearing seat is wherein the base, column, seat body, platform, and extension block are integrally cast.

[0020] According to another embodiment of the present invention or any of the foregoing embodiments, the adjustable bearing housing is provided with a detachable end cap, and the end cap and the side of the housing are sealed.

[0021] According to another embodiment of the present invention or any of the foregoing embodiments, an adjustable bearing seat is provided, wherein a pad is installed between the base and the support column, a guide groove is provided on the pad, and two protruding guide limiting blocks are provided on the lower surface of the base, the guide limiting blocks can move in the guide groove and are limited by the guide groove.

[0022] The beneficial effects of this utility model are:

[0023] 1. The novel adjustable bearing seat for the tension wheel of a pontoon, as described in this utility model, avoids the traditional inverted T-shaped structure. Instead, it adopts a structure where the base does not extend beyond the seat body, which significantly shortens the length of the support column. When the adjustable bearing seat moves to its closest point to the pontoon, there is a distance between the outer edge of the tension wheel and the outer edge of the seat body, preventing the support column from rubbing against or interfering with the chain plate. Since the support column can still connect to the base of the lower layer of the adjustable bearing seat even after being shortened, the support column will not rub against or interfere with the chain plate even if the chain plate is lengthened beyond the support column.

[0024] 2. This utility model creatively sets the telescopic screw in the upper part of the seat plate, so that the upper and lower parts of the adjustable bearing seat are stressed, instead of the traditional structure where the lower part is stressed. This can avoid uneven stress and shaking of the seat connected to the tension wheel, and prevent the fastening bolts from loosening.

[0025] 3. This utility model has two symmetrical extension blocks or side plates on the base below the seat body to prevent overturning caused by pushing or pulling when the tension wheel pushes or pulls the seat body axially. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a traditional adjustable bearing housing installed on a float box.

[0027] Figure 2 This is an enlarged partial sectional view of a traditional adjustable bearing housing;

[0028] Figure 3 This is a schematic diagram of the novel adjustable bearing seat for the float tensioning wheel installed on the float, as described in Embodiment 1 of this utility model.

[0029] Figure 4 This is an enlarged partial cross-sectional view of the novel adjustable bearing seat for a float tensioner wheel described in Embodiment 1 of this utility model;

[0030] Figure 5 This is an enlarged bottom view of the novel adjustable bearing seat for the float tensioner described in Embodiment 1 of this utility model;

[0031] Figure 6 This is an enlarged side view of the novel adjustable bearing seat for a float tensioner wheel described in Embodiment 1 of this utility model;

[0032] Figure 7 for Figure 6 An enlarged schematic diagram of part A;

[0033] Figure 8 This is an enlarged schematic diagram of the novel adjustable bearing seat for the float tensioner described in Embodiment 2 of this utility model;

[0034] Figure 9 This is an enlarged side view of the novel adjustable bearing seat for the float box tensioning wheel described in Embodiment 2 of this utility model, with the telescopic screw removed.

[0035] Figure 10 This is an enlarged top view of the novel adjustable bearing seat for the float box tensioning wheel described in Embodiment 1 of this utility model, with the telescopic screw removed.

[0036] In the diagram: 1. Seat; 2. Tensioner wheel; 3. Support column; 4. Sleeve; 5. Telescopic screw; 6. U-shaped clamp; 7. Base; 8. Mounting hole; 9. Column; 10. Guide limit block; 11. Extension block; 12. Float box; 13. Platform; 14. Chain plate; 15. Side plate. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0038] like Figure 3 , 4 As shown, a novel adjustable bearing seat for the tension wheel 2 of the float 12 includes: a seat body 1 and a base 7, which are connected to a single-sided journal of the tension wheel 2 via bearings. The seat body 1 supports the rotation of the tension wheel 2 and drives it to move horizontally. The base 7 is detachably mounted on a support column 3 by fastening bolts. The support column 3 is fixedly connected to the float 12. The base 7 is elongated and has vertical mounting holes 8. One of the mounting holes 8 is located below the seat body 1 and has a hollow area for placing and removing bolts between it and the seat body 1. The platform 13, the seat body 1, and the base 7 are connected by multiple columns 9. This type of adjustable bearing seat has a relatively high height, requiring the support column 3 to be lowered. The sides of the base 7 and the support column 3 away from the float 12 are both located within the vertical projection plane of the seat body 1. The base 7 can be moved and secured to any permissible position without contacting the support column 3 even if the chain plate 14 extends beyond the outer side of the support column 3.

[0039] like Figure 5 As shown, mounting holes 8 are oblong holes, and there are more than two, preferably three.

[0040] The base 1 is equipped with a removable end cap, which is sealed to the side of the base 1. A pad is installed between the base 7 and the support column 3. A guide groove is provided on the pad. Two protruding guide limiting blocks 10 are provided on the lower surface of the base 7. The guide limiting blocks 10 can move within the guide groove and are limited by the guide groove. Example

[0041] like Figure 8 , 9As shown in Figure 10, a novel adjustable bearing seat for the tension wheel 2 of the float 12 includes: a seat body 1 and a base 7, which are connected to a single-sided journal of the tension wheel 2 via bearings. The seat body 1 can support the rotation of the tension wheel 2 and drive the tension wheel 2 to move horizontally. The base 7 is detachably mounted on a support column 3 by fastening bolts. The support column 3 is fixedly connected to the float 12. The base 7 is elongated and has vertical mounting holes 8. The seat body 1 is fixed on the base 7. A side plate 15 is provided on the side of the base 7, and the side plate 15 also has mounting holes 8. The support column 3 has corresponding protrusions. The side plate 15 can be locked onto the protrusions on the support column 3 by bolts. The platform 13 is connected to the base 7 via a column 9. The adjustable bearing seat of this structure has a low height, the same as that of a traditional bearing seat. There is no need to change the position of the support column 3. Only a protrusion perpendicular to the main body is added to the support column 3 to support the side plate 15. This structure eliminates the need for the extension block 11, and the locked side plate 15 enhances the push-pull effect of the anti-tension wheel 2. The base 7 and the support column 3 on the side away from the float 12 are both located within the vertical projection plane of the base 1. The base 7 can be moved and secured to any permissible position, and even if the chain plate 14 extends beyond the outer side of the support column 3, it will not contact the support column 3.

[0042] like Figure 5 As shown, mounting holes 8 are oblong holes, and there are more than two, preferably three.

[0043] The base 1 is equipped with a removable end cap, which is sealed to the side of the base 1. A pad is installed between the base 7 and the support column 3. A guide groove is provided on the pad. Two protruding guide limiting blocks 10 are provided on the lower surface of the base 7. The guide limiting blocks 10 can move within the guide groove and are limited by the guide groove. Example

[0044] Other structures are as shown in Examples 1 and 2, except for the following:

[0045] like Figure 4 , 8 As shown, a base 13 is provided on the side of the seat body 1. The base 13 is L-shaped, with a countersunk hole on its vertical inner side. An arc-shaped groove is provided on the upper inner surface of the base 13. The sleeve 4 is inserted into the arc-shaped groove and the countersunk hole. The sleeve 4 is detachably fixed to the base 13 by a U-shaped clamp 6. A threaded hole is provided inside the sleeve 4. The telescopic screw 5 cooperates with the sleeve 4. The end of the sleeve 4 is provided with an external hexagonal structure for easy screwing. The sleeve 4 and the telescopic screw 5 are located in the upper middle part of the side of the seat body 1. The extension length of the telescopic screw 5 is adjusted by screwing. The end of the telescopic screw 5 abuts against the side of the float box 12. Example

[0046] The other structures are the same as in Embodiment 1, except as follows: Figure 4 , 5As shown in Figures 6 and 7, the base 7 has extension blocks 11 on both sides directly below the base plate. The extension blocks 11 increase the local width of the base 7 to prevent the axial force of the tension wheel 2 from causing the base body 1 and the base 7 to flip over. Example

[0047] The rest is the same as in Examples 1 to 4, except that the base 7, column 9, seat 1, platform 13, and extension block 11 are integrally cast.

[0048] The working principle of this utility model:

[0049] Because the working environment is tidal flats and waterways, the chain plate 14 will pick up weeds and other debris during rotation. Currently, the chain plate 14 is similar in width to the fixed wheel and tension wheel 2. When the chain plate 14 rotates to the fixed wheel and tension wheel 2, weeds will become entangled at the axle between the tension wheel 2 and the bearing seat, hindering the excavator's movement and requiring clearing. Our research and development approach is to lengthen the chain plate 14, extending its ends beyond the tracks and bearing seats. During movement, the chain plate 14 will throw weeds away at a distance from the axle, thus reducing entanglement. Furthermore, lengthening the chain plate 14 increases the contact area with the ground, improving traction and resulting in more stable movement.

[0050] Therefore, to avoid friction damage between the chain plate 14 and the support column 3, and to prevent interference between them, it is necessary to increase the distance between the support column 3 and the chain plate 14. Shortening the length of the support column 3 is the most effective method. In traditional T-shaped bearing seats, the mounting holes 8 are located on both sides of the bearing, which inevitably requires the support column 3 to be extended beyond the seat body 1. In actual operation, the chain plate 14 often rubs against the support column 3, causing damage and the bearing seat to loosen on one side. This invention creatively adopts a structure where the base 7, on the side furthest from the float box, does not extend beyond the seat body 1, significantly shortening the length of the support column 3. Of course, compared to the traditional position, the support column 3 needs to be lowered relative to the float box 12 because the bearing seat height has changed. With a higher bearing seat, if only the base 7 connects to the support column 3, the force distribution will be more uneven compared to a traditional bearing seat. Therefore, this invention moves the telescopic screw 5 upwards, allowing the upper and lower parts of the seat plate to bear force simultaneously, resulting in greater stability and reliability.

[0051] At the same time, such as Figure 1 As shown, in traditional designs, the sleeve 4 is fixed to the float box 12, and the telescopic screw 5 extends relative to the float box 12, abutting against the side of the bearing seat. This requires work on the float box 12 when changing different sleeves 4, which can easily damage the float box 12. In this invention, the sleeve 4 is positioned on the bearing seat, and the telescopic screw 5 abuts against the float box 12, thus preventing damage to the float box 12 when changing the sleeve 4.

[0052] Because the base 7 and support column 3 are slender structures, the extension block 11 or side plate 15 widens the local area of ​​the base 7 below the seat plate. When the base 7 is pushed outward by the tension wheel 2, the outer extension block 11 or side plate 15 prevents the seat plate and base 7 from flipping outward; when the base 7 is pulled inward by the tension wheel 2, the inner extension block 11 or side plate 15 prevents the seat plate and base 7 from flipping inward.

[0053] The pontoon can be either dual-drive or single-drive. In single-drive mode, the drive motor is mounted on the opposite side of the fixed wheel. In this case, there are two novel adjustable bearing seats, symmetrically mounted on both sides of the tension wheel. In dual-drive mode, there is one novel adjustable bearing seat, and the other motor is mounted on the opposite side of the adjustable bearing seat. The lower part of this motor also has a similar structure to the bearing seat, thus reducing the length of the support column 3 below the motor.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and characteristics of this utility model, and are intended to enable those skilled in the art to understand and implement the content of this utility model. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A novel adjustable bearing housing for a float tensioner wheel, comprising: The seat (1) is connected to the single-sided journal of the tensioning wheel (2) via a bearing. The seat (1) can support the rotation of the tensioning wheel (2) and drive the tensioning wheel (2) to move horizontally. Its characteristic is that it also includes: The base (7) is detachably mounted on the support column (3) by fastening bolts. The support column (3) is fixedly connected to the float (12). The base (7) is long and has vertical mounting holes (8). The side of the base (7) and the support column (3) away from the float (12) are both located in the vertical projection plane of the seat body (1). The base (7) can be moved and fastened to any permissible position, and even if the chain plate (14) extends beyond the outer side of the support column (3), it will not contact the support column (3). The telescopic screw (5) abuts against the pontoon.

2. A novel adjustable bearing housing for a float tensioner wheel according to claim 1, characterized in that: The seat (1) is provided with a base (13) on its side. The base (13) is L-shaped and has a countersunk hole on its vertical inner side. The upper inner surface of the base (13) is provided with an arc-shaped groove. The sleeve (4) is inserted into the arc-shaped groove and the countersunk hole. The sleeve (4) is detachably fixed to the base (13) by a U-shaped clamp (6). The sleeve (4) is provided with a threaded hole. The telescopic screw (5) cooperates with the sleeve (4). The end of the sleeve (4) is provided with an external hexagonal structure for easy screwing.

3. A novel adjustable bearing housing for a float tensioner wheel according to claim 2, characterized in that: One of the mounting holes (8) is located below the base (1) and there is a hollow area between it and the base (1) for taking out and placing bolts; the platform (13), the base (1), and the base (7) are connected by multiple columns (9).

4. A novel adjustable bearing housing for a float tensioner wheel according to claim 2, characterized in that: The base (1) is fixed on the base (7). The side plate (15) is provided on the side of the base (7). The side plate (15) is also provided with mounting holes (8). The support column (3) is provided with corresponding protrusions. The side plate (15) can be locked on the protrusions on the support column (3) by bolts. The platform (13) and the base (7) are connected by a column (9).

5. A novel adjustable bearing housing for a float tensioner wheel according to any one of claims 1-4, characterized in that: The telescopic screw (5) is located on the upper middle part of the side of the base (1). The extension length of the telescopic screw (5) is adjusted by screwing. The end of the telescopic screw (5) abuts against the side of the float box (12).

6. A novel adjustable bearing housing for a float tensioner wheel according to claim 1 or 3, characterized in that: The base (7) has extension blocks (11) on both sides directly below the seat plate. The extension blocks (11) increase the local width of the base (7) to prevent the axial force of the tension wheel (2) from causing the seat (1) and the base (7) to flip.

7. A novel adjustable bearing housing for a float tensioner wheel according to any one of claims 1-4, characterized in that: The mounting holes (8) are oblong holes, and there are more than two of them.

8. A novel adjustable bearing housing for a float tensioner wheel according to any one of claims 1-4, characterized in that: The base (7), column (9), seat (1), platform (13), and extension block (11) are integrally cast.

9. A novel adjustable bearing housing for a float tensioner wheel according to any one of claims 1-4, characterized in that: The seat (1) is provided with a detachable end cap, and the end cap and the side of the seat (1) are sealed.

10. A novel adjustable bearing housing for a float tensioner wheel according to any one of claims 1-4, characterized in that: A pad is installed between the base (7) and the support column (3). A guide groove is provided on the pad. Two protruding guide limiting blocks (10) are provided on the lower surface of the base (7). The guide limiting blocks (10) can move in the guide groove and are limited by the guide groove.

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