A rubber track tensioning device

Abstract

This invention relates to the field of track tensioning technology, and discloses a rubber track tensioning device, including a drive mechanism and a translational tensioning mechanism disposed at the end of the drive mechanism away from the drive wheel. A tensioning wheel is rotatably connected to the telescopic end of the translational tensioning mechanism. The tensioning wheel and the translational tensioning mechanism, and the track chain and the tensioning wheel are fixed by an oil drain lock. The oil drain lock includes a wheel lock positioner and a chain insertion plate. The chain insertion plate is fitted to the surface of the central protruding ring of the tensioning wheel, and the end of the chain insertion plate is provided with a chain link limiting block that matches the track link groove. This technical solution uses the original power source of the vehicle track as the oil drain power for the tensioning wheel. The original power of the vehicle track can achieve a more stable power transmission through the coordination of the engine and gears, thus forming a standard oil draining operation procedure, allowing novices to perform the standard oil draining steps through the operation procedure.

Description

Technical Field

[0001] This invention relates to the field of track tensioning technology, specifically a rubber track tensioning device. Background Technology

[0002] Track loosening is one of the most common problems with tracked vehicles. Currently, conventional track tensioning devices mainly adjust the track tension by adding grease to the tensioning cylinder or expansion cylinder. The detection and operation steps for track loosening are as follows: Lift one side of the track using the lifting device and observe the track's descent under gravity as a criterion for judging tension.

[0003] The equipment whose tracks need to be replaced is moved to a horizontal position. After the grease fitting screws are removed, the tensioner is subjected to force through the power unit, causing the tensioner to contract and squeeze out the residual grease. Grease is then added back through a grease gun, and the tensioning cylinder pushes the track to achieve tension.

[0004] As can be seen from the above steps, the grease needs to be drained and replaced with new grease before the tracks are tensioned. Tracks are commonly used in construction machinery, such as excavators. During the grease draining process, the operator needs to manipulate the bucket to apply pressure to the tensioner wheel, forcing the grease to squeeze out. To increase the cushioning effect during travel, rubber pads or plates are attached to the surface of each track unit, while maintaining the rigidity of the metal track. The rubber's cushioning effect reduces damage to the road surface and provides some cushioning. However, the rubber track surface makes it difficult for inexperienced operators to accurately control the pressure of the bucket on the tensioner wheel. The bucket can easily squeeze and damage the rubber track, and the fact that this method requires a certain level of skill limits its applicability. Summary of the Invention

[0005] The purpose of this invention is to provide a rubber track tensioning device that uses the original power source of the vehicle track as the oil discharge power for the tensioning wheel. The original power source of the vehicle track can be used in conjunction with the engine and gear shifting to achieve a more stable power delivery, thereby forming a standard oil discharge operation procedure. This allows even novice operators to easily perform the standard oil discharge steps, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rubber track tensioning device, comprising a drive mechanism and a translational tensioning mechanism disposed at the end of the drive mechanism away from the drive wheel, wherein a tensioning wheel is rotatably connected to the telescopic end of the translational tensioning mechanism, and the tensioning wheel and the translational tensioning mechanism, and the track chain and the tensioning wheel are fixed by an oil drain lock.

[0007] The oil drain lock includes a wheel lock positioner and a chain insertion plate. The chain insertion plate is fitted to the surface of the central protruding ring of the tension wheel. The end of the chain insertion plate is provided with a chain link limiting block that matches the track link groove. The chain link limiting block has an arc-shaped clearance groove and an arc-shaped surface that cooperates with the chain link shaft for limiting. The surface of the chain link limiting block is provided with a chain link alignment hole corresponding to the chain link plate groove.

[0008] The translational tensioning mechanism is detachably connected to the tensioning wheel via a wheel locking positioner. The chain insertion plate has a locking plate hole at one end away from the chain link limiting block. The locking plate hole is detachably connected to the wheel locking positioner. The chain link alignment hole, the wheel locking positioner, and the chain link plate groove are detachably connected via a fixed chain rod.

[0009] As a further embodiment of the present invention: the top surface of the translational tensioning mechanism is provided with an avoidance slope, and the avoidance slope and the track chain form a space for accommodating the wheel lock positioner and the chain plug plate.

[0010] As a further embodiment of the present invention: a fixing hole is provided on the side of the tensioning wheel, a fixed wheel rod that interlocks with the fixing hole is fixedly connected to the bottom of the wheel locking device, a locking block is fixedly connected to the side of the clearance slope, and the fixed wheel rod and the locking block are detachably connected.

[0011] As a further embodiment of the present invention: the wheel lock positioner has an alignment part and a positioning part, the positioning part has a screw hole that cooperates with the locking plate hole for fixing, and the alignment part has two holes for fixing the fixed chain rod.

[0012] As a further embodiment of the present invention: the top of the drive mechanism is provided with two top wheel assemblies, the top wheel assembly including a wheel body that cooperates with the track chain and a support power component that provides support force to the wheel body.

[0013] As a further embodiment of the present invention: the translational tensioning mechanism and the tensioning wheel have a hole in the radial direction of the tensioning wheel to receive the chain insertion plate.

[0014] As a further aspect of the present invention, the width of the chain connector plate is smaller than the spacing between the track link plates.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Advantage I: This technical solution uses the original power source of the vehicle track as the oil discharge power of the tensioner. The original power of the vehicle track can achieve more stable power transmission through the cooperation of the engine and gear, thereby forming a standard oil discharge operation procedure, allowing novices to complete the standard oil discharge steps through the operation procedure.

[0016] Advantage II: Building upon Advantage I, this technical solution retains the integrity of the tensioning power structure. An external structure, in conjunction with the existing tensioning power structure, enables the oil drainage operation before tensioning. The current track structure remains unchanged; this simple, original structure allows the tracked walking mechanism to perform more stably in harsh terrain. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional disassembly and comparison diagram of a rubber track tensioning device.

[0019] Figure 2 This is a front view disassembly comparison diagram of a rubber track tensioning device.

[0020] Figure 3 This is a three-dimensional schematic diagram of a rubber track tensioning device after the oil drain lock is installed.

[0021] Figure 4 This is a side view schematic diagram of a rubber track tensioning device after an oil drain lock is installed.

[0022] Figure 5 This is a three-dimensional schematic diagram of a rubber track tensioning device after the chain connector plate has been installed.

[0023] Figure 6 This is a three-dimensional schematic diagram of a rubber track tensioning device after the track chain has been fitted with a chain connector plate.

[0024] Figure 7 for Figure 6 A three-dimensional diagram from another perspective.

[0025] Figure 8 for Figure 6 A three-dimensional cross-sectional diagram.

[0026] Figure 9 This is a three-dimensional schematic diagram from another perspective of a rubber track tensioning device after the chain connector plate has been installed.

[0027] Figure 10 This is a three-dimensional schematic diagram from another perspective after an oil drain lock is installed in a rubber track tensioning device.

[0028] In the diagram: 1. Drive mechanism; 2. Translational tensioning mechanism; 21. Avoidance ramp; 22. Locking block; 3. Top wheel assembly; 4. Tensioning wheel; 41. Fixing hole; 5. Wheel lock positioner; 51. Positioning part; 52. Alignment part; 53. Fixed wheel rod; 54. Fixed chain rod; 6. Chain insertion plate; 61. Locking plate hole; 62. Chain link limit block; 621. Arc-shaped avoidance groove; 622. Arc-shaped surface; 63. Chain link alignment hole. Detailed Implementation

[0029] Please see Figures 1-10 In order to solve the problem that an external power source is needed to drain oil from the tensioning wheel 4 before tensioning, the specific improvements in this embodiment are as follows: The basic structure includes a drive mechanism 1 and a translational tensioning mechanism 2 located at the end of the drive mechanism 1 away from the drive wheel. The extension and retraction end of the translational tensioning mechanism 2 is rotatably connected to the tensioning wheel 4.

[0030] The improved structure is as follows: the tension wheel 4 and the translational tensioning mechanism 2, and the track chain and the tension wheel 4 are fixed by an oil drain lock.

[0031] Improved Principle: The drive wheel of the track has teeth, which can drive the track chain to rotate. The tension wheel 4 is a smooth round wheel. Under the pressure of the translational tensioning mechanism 2, friction is generated between the tension wheel 4 and the chain. This friction drives the tension wheel 4 to move synchronously with the chain, or the chain may experience sliding friction with the tension wheel 4. If the tension wheel 4 does not rotate, and there is no sliding friction between the translational tensioning mechanism 2 and the tension wheel 4, then during the movement of the drive wheel driving the chain, the chain will exert a pulling force on the tension wheel 4. In this case, the track drive wheel provides power for the pushing and discharging of oil by the translational tensioning mechanism 2.

[0032] Please see Figure 3 , Figure 4 There is a cavity between the two chain links. This cavity can not only accommodate the gear but also the central protruding ring of the tensioner 4. The advantage of this design is that it prevents the chain from derailing from the tensioner 4 or the drive gear. Therefore, the following improvements are made using the characteristics of the chain links: the oil drain lock includes a wheel lock positioner 5 and a chain insertion plate 6. The chain insertion plate 6 is attached to the surface of the central protruding ring of the tensioner 4. The end of the chain insertion plate 6 is provided with a chain link limiting block 62 that matches the track chain link groove. The chain link limiting block 62 has an arc-shaped clearance groove 621 and an arc-shaped surface 622 that cooperate with the chain link shaft for limiting.

[0033] Please see Figure 9To achieve chain locking, a chain insertion plate 6 is first installed. The chain insertion plate 6 is an independent, irregularly shaped component. The width of the chain insertion plate 6 is smaller than the spacing between the track link plates. The translational tensioning mechanism 2 and the tensioning wheel 4 have a cavity in the radial direction of the tensioning wheel 4 to accommodate the chain insertion plate 6. First, the chain insertion plate 6 is placed into the cavity of the translational tensioning mechanism 2 and the tensioning wheel 4. The chain insertion plate 6 can be fixed to the central protruding ring of the tensioning wheel 4 by temporary adhesion or magnetic adsorption. The initial fixed posture is as follows: Figure 9 As shown. At this time, by rotating the drive wheel by a fixed angle, the posture of the chain connector plate 6 is changed from... Figure 9 Switch to Figure 5 The chain link located above the chain connector plate 6 naturally moves to the top of the chain connector plate 6 and is displayed as... Figure 8 attitude. Figure 8 In the middle, the two shafts of the link are located at the arc-shaped clearance groove 621 and the arc-shaped surface 622, respectively. Figure 8 In this position, the shaft contacts the arc-shaped clearance groove 621. The width of the chain link shaft is greater than the width of the chain link limiting block 62, which allows the chain link limiting block 62 to enter the chain link more easily. If the tension wheel 4 is stationary at this time, the drive wheel pulls the chain to move. Due to the looseness of the chain, the chain will be lifted through the arc-shaped clearance groove 621 and continue to move. At this time, the chain insertion plate 6 cannot limit the chain.

[0034] To further lock the chain connector plate 6, the following improvements are made: the surface of the chain link limiting block 62 is provided with a chain link alignment hole 63 corresponding to the chain link plate groove, and the translation tensioning mechanism 2 and the tensioning wheel 4 are detachably connected by a wheel locking device 5.

[0035] Please see Figure 5 In conventional track chains, the link plates all have grooves. When the link limiting block 62 enters the chain, the position of the link alignment hole 63 can be observed through the link plate.

[0036] The translation tensioning mechanism 2 and the tensioning wheel 4 are locked together by a wheel locking device 5. The specific structure is as follows: The top surface of the translation tensioning mechanism 2 is provided with an avoidance slope 21. The avoidance slope 21 and the track chain form a space for the installation of the wheel locking device 5 and the chain insertion plate 6. The side of the tensioning wheel 4 is provided with a fixing hole 41. The bottom of the wheel locking device 5 is fixedly connected with a fixed wheel rod 53 that interlocks with the fixing hole 41. The side of the avoidance slope 21 is fixedly connected with a locking block 22. The fixed wheel rod 53 and the locking block 22 are detachably connected.

[0037] The implementation principle is as follows: Please refer to 3. The fixed wheel rod 53 is located in the arc-shaped area below the wheel lock positioner 5, which is a fixed chain link. Please refer to [link / reference]. Figure 10 , Figure 10As can be seen, the fixed wheel rod 53 passes through the fixing hole 41 and is fixedly connected to the locking block 22. The fixed wheel rod 53 and the locking block 22 can be fixedly connected in various ways, such as plugging or screwing. The locking block 22 can also provide multiple fixed positions or adjustable fixed positions, thereby improving the flexibility of the fixing operation and avoiding the need for multiple fine adjustments to the alignment of the tensioning wheel 4. After the locking block 22 and the fixed wheel rod 53 are engaged, the fixing hole 41 cannot rotate relative to the translational tensioning mechanism 2.

[0038] Please see Figure 2 The avoidance slope 21 can increase the space between the translation tensioning mechanism 2 and the chain, so that the wheel lock positioner 5 and the chain plug plate 6 can be installed on the tensioning wheel 4.

[0039] The locking method between the wheel lock positioner 5 and the chain insertion plate 6 is as follows: The chain insertion plate 6 has a locking plate hole 61 at the end away from the chain link limiting block 62. The locking plate hole 61 is detachably connected to the wheel lock positioner 5. The chain link alignment hole 63, the wheel lock positioner 5, and the chain link plate groove are detachably connected by a fixed chain rod 54. The wheel lock positioner 5 has an alignment part 52 and a positioning part 51. The positioning part 51 has a screw hole that cooperates with the locking plate hole 61 for fixing. The alignment part 52 has two holes for fixing the fixed chain rod 54.

[0040] Please see Figure 3 The wheel lock positioner 5 includes a positioning part 51 and an alignment part 52. The positioning part 51 is fixed to the locking plate hole 61. The chain insertion plate 6 has an arc surface that mates with the protruding ring of the tension wheel 4. After the chain insertion plate 6 is in contact with the protruding ring of the tension wheel 4, the chain insertion plate 6 will rotate with the movement of the tension wheel 4. After the positioning part 51 is fixed to the locking plate hole 61, the center of motion of the chain insertion plate 6 is not consistent with the center of motion of the positioning part 51, so it cannot rotate, thereby locking the chain insertion plate 6. The alignment part 52 has two holes in which the fixed chain rod 54 can be directly inserted or fixed by threads. The fixed chain rod 54 passes through the chain link plate groove and mates with the chain link alignment hole 63. The chain is locked with the wheel lock positioner 5 and the chain insertion plate 6. At this time, when the drive wheel rotates, it can drive the tension wheel 4 to perform horizontal displacement and squeeze out oil.

[0041] Additional explanation: The top of the drive mechanism 1 is provided with two top wheel assemblies 3. The top wheel assembly 3 includes a wheel body that cooperates with the track chain and a support power component that provides support force to the wheel body.

[0042] The rotation of the drive wheel causes the tensioner 4 to contract, further loosening the track and reducing the meshing effect between the track chain and the drive wheel. Therefore, a top wheel assembly 3 is provided. The top wheel assembly 3 prevents the chain from disengaging from the drive wheel teeth when the track is loose. The top wheel assembly 3 only needs to support the track and prevent the chain from disengaging. The support power component can be any of a cylinder, hydraulic cylinder, or spring, which will not be elaborated further here.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rubber track tensioning device, comprising a drive mechanism (1) and a translational tensioning mechanism (2) disposed at the end of the drive mechanism (1) away from the drive wheel, wherein a tensioning wheel (4) is rotatably connected to the telescopic end of the translational tensioning mechanism (2), characterized in that: The tension wheel (4) and the translational tensioning mechanism (2) are fixed together, and the track chain and the tension wheel (4) are fixed together by an oil drain lock; the oil drain lock includes a wheel lock positioner (5) and a chain insertion plate (6). The chain insertion plate (6) fits and is attached to the surface of the central protruding ring of the tension wheel (4). The end of the chain insertion plate (6) is provided with a chain link limiting block (62) that matches the track link groove. The chain link limiting block (62) has an arc-shaped relief groove (621) and an arc-shaped surface (621) that cooperates with the chain link shaft for limiting. 22), the surface of the link limiting block (62) is provided with a link alignment hole (63) corresponding to the link plate groove; the translation tensioning mechanism (2) and the tensioning wheel (4) are detachably connected by a wheel lock positioner (5); the chain plug plate (6) is provided with a locking plate hole (61) at the end away from the link limiting block (62); the locking plate hole (61) is detachably connected to the wheel lock positioner (5); the link alignment hole (63), the wheel lock positioner (5), and the link plate groove are detachably connected by a fixed chain rod (54).

2. The rubber track tensioning device according to claim 1, characterized in that: The top surface of the translation tensioning mechanism (2) is provided with a clearance slope (21), and the clearance slope (21) and the track chain form a space for accommodating the wheel lock positioner (5) and the chain plug plate (6).

3. The rubber track tensioning device according to claim 2, characterized in that: The tensioning wheel (4) has a fixing hole (41) on its side. The bottom of the wheel locking device (5) is fixedly connected to a fixed wheel rod (53) that interlocks with the fixing hole (41). The side of the clearance slope (21) is fixedly connected to a locking block (22). The fixed wheel rod (53) and the locking block (22) are detachably connected.

4. The rubber track tensioning device according to claim 1, characterized in that: The wheel lock positioner (5) has an alignment part (52) and a positioning part (51). The positioning part (51) has a screw hole that cooperates with the lock plate hole (61) for fixing. The alignment part (52) has two holes for fixing the fixed chain rod (54).

5. A rubber track tensioning device according to claim 1, characterized in that: The drive mechanism (1) has two top wheel assemblies (3) on its top. The top wheel assembly (3) includes a wheel body that cooperates with the track chain and a support power component that provides support to the wheel body.

6. A rubber track tensioning device according to claim 1, characterized in that: The translational tensioning mechanism (2) and the tensioning wheel (4) have a hole in the radial direction of the tensioning wheel (4) to receive the chain plug plate (6).

7. A rubber track tensioning device according to claim 1, characterized in that: The width of the chain connector plate (6) is smaller than the spacing between the track link plates.

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