Tensioning device for light excavator
By introducing a protective device into the excavator's tensioning device, the problem of large stones getting stuck was solved, the safety and efficiency of the buffer spring were improved, and the tracks were ensured to work normally in complex environments.
Patent Information
- Application Number
- CN202423076405.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing excavator tensioning devices are prone to jamming or deformation when large stones get stuck inside the buffer spring at construction sites, affecting normal telescopic movement.
A tensioning device for a lightweight excavator has been designed, which includes a protective device comprising components such as a cylinder, a cover, a return spring, and a limit plate. Through the coordinated movement of these components, the buffer spring can be completely enclosed to prevent large stones from entering and protect the buffer spring.
It effectively prevents large stones from getting stuck in the buffer spring, improves the safety and efficiency of the buffer spring, reduces wear and deformation, and ensures proper track tension.
Smart Images
Figure CN223577212U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tensioning equipment technical field especially uses the tensioning device of light excavator. BACKGROUND
[0002] The excavator tensioning device refers to a mechanism used in excavators to adjust the tension of the track, its main function is to adjust the tightness of the excavator track through a specific device to ensure that it adapts to different working environments and operational requirements, the tensioning device is usually composed of springs, oil cylinders and other related components, by adjusting these components, the tension of the track can be changed.
[0003] The existing excavator tensioning device in the use process adopts the fixed block at one end of the oil cylinder and the excavator frame installation fixed, then the connecting frame at the other end of the oil cylinder and the track wheel installation connection, when the oil cylinder extends and retracts, the position of the excavator track wheel can be changed, then the tightness of the excavator track is adjusted, when the track is loose, the buffer spring cooperates with the oil cylinder to increase the tensioning force, when the track is too tight, the buffer spring cooperates with the oil cylinder to reduce the tensioning force, so as to maintain the proper tension state of the track, and the buffer spring plays a good buffering effect, so that the excavator track is elastic and tight, ensuring that the excavator can travel on any terrain.
[0004] However, due to the complex construction site environment of the excavator, it may cause the large volume of stone blocks on the ground to accidentally enter the inside of the buffer spring during the construction process of the excavator, and cause the buffer spring to be jammed, affecting the normal extension and retraction movement of the buffer spring. UTILITY MODEL CONTENTS
[0005] The utility model aims at solving the shortcomings in the prior art and provides a light excavator tensioning device.
[0006] In order to achieve the above object, the utility model discloses the following technical scheme: the tension device for light excavator, including the oil cylinder, one side of the oil cylinder is provided with the connecting frame, the one end of the oil cylinder is provided with the fixed block away from the connecting frame, the surface of the oil cylinder is provided with the buffer spring, the buffer spring is located between the fixed block and the connecting frame, one side of the buffer spring is provided with the protection device, the protection device includes the cylinder, the cylinder is provided with the connecting device between the fixed block, the surface of the buffer spring is covered with the cylinder, one side of the cylinder is provided with the rectangular hole, one side of the cylinder is fixedly connected with the rectangular block close to the rectangular hole, one side of the rectangular block is fixedly connected with the guide rod, the inner wall of the cylinder is slidably connected with the round cover, the surface of the buffer spring is covered with the round cover, one side of the round cover is fixedly connected with the round hole plate, the surface of the round hole plate is slidably connected with the inner wall of the rectangular hole, the surface of the guide rod is slidably connected with the inner wall of the round hole plate, the surface of the guide rod is covered with the reset spring, one end of the reset spring is fixedly connected with the rectangular block, the other end of the reset spring is fixedly connected with the round hole plate, one side of the connecting frame is fixedly connected with the push ring, the surface of the push ring is greater than the inner wall of the round cover.
[0007] The effect of the above components is that: by setting the protection device, first manually cover the cylinder and the round cover on the surface of the buffer spring, at the same time, assemble and fix the cylinder with the fixed block through the connecting device, at this time, under the reaction force of the reset spring, make the reset spring push the round hole plate to move left and right inside the rectangular hole, make the round hole plate move left and right along the surface of the guide rod, make the round hole plate drive the round cover to move in the direction of approaching the connecting frame inside the cylinder, when the round cover moves to the position of sticking to the surface of the push ring, make the cylinder cooperate with the round cover to completely wrap the buffer spring and intercept the large volume debris or stone outside, achieve the protection of the buffer spring, reduce the large volume stone on the ground in the construction process of the excavator accidentally stuck in the buffer spring, cause the buffer spring to jam or produce extrusion deformation, affect the normal expansion and contraction of the buffer spring, improve the use safety and efficiency of the buffer spring.
[0008] Preferably, the guide rod is fixedly connected with a limiting plate away from the rectangular block, and the surface of the limiting plate is greater than the inner wall of the round hole plate.
[0009] The effect of the above components is that: by setting the limiting plate, the limiting plate can be made of rubber material to intercept the round hole plate during movement, reduce the direct collision and wear of the round hole plate with the inner wall of the rectangular hole during movement.
[0010] Preferably, the round cover is fixedly connected with a rubber ring away from the cylinder, and the surface size and shape of the rubber ring are adapted to the surface size and shape of the push ring.
[0011] The effect achieved by the above-mentioned component is that the rubber ring separates the circular cover from the push ring, reducing the collision between the circular cover and the surface of the push ring during movement and the occurrence of large wear.
[0012] Preferably, the surface of the circular cover is provided with a plurality of through holes, and the plurality of through holes all penetrate the circular cover.
[0013] The effect achieved by the above-mentioned component is that the through holes increase the air flow of the circular cover and improve the heat dissipation efficiency inside the circular cover.
[0014] Preferably, the surface of the circular cylinder is fixedly connected with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged at equal distances.
[0015] The effect achieved by the above-mentioned component is that the reinforcing ribs increase the strength of the circular cylinder and reduce the deformation of the circular cylinder caused by collision or extrusion of external objects during use.
[0016] Preferably, the connecting device comprises a screw rod, the screw rod is fixedly connected with the fixed block, the surface of the screw rod is threadedly connected with a screw hole ring, one side of the circular cylinder is fixedly connected with a circular hole L plate, the surface size and shape of the screw rod are adapted to the inner wall size and shape of the circular hole L plate, and the surface of the screw hole ring is larger than the inner wall of the circular hole L plate.
[0017] The effect achieved by the above-mentioned component is that the connecting device is first manually moved to drive the circular cylinder to move the circular cover, drive the circular hole L plate to move, and when the circular hole L plate moves to the position of being sleeved on the surface of the screw rod, the circular cylinder and the circular cover are both sleeved on the surface of the buffer spring, at this time, the screw hole ring is manually rotated to move up and down along the surface of the screw rod, and when the screw hole ring moves to the position of extruding the surface of the circular hole L plate, the circular hole L plate is fixedly connected with the fixed block under the extrusion of the screw hole ring, thereby achieving the assembly between the protection device and the fixed block, and the protection device can be conveniently disassembled later, improving the use flexibility of the protection device and the convenience of later maintenance.
[0018] Preferably, the surface of the screw hole ring is fixedly connected with a plurality of anti-skid blocks, and the plurality of anti-skid blocks are arranged at equal distances.
[0019] The effect achieved by the above-mentioned component is that the anti-skid blocks can intercept the hands, reducing the occurrence of hand slipping when manually rotating the screw hole ring.
[0020] Preferably, one side of the screw rod is fixedly connected with a circular hole block, the circular hole block is fixedly connected with the fixed block, one side of the circular hole L plate is fixedly connected with a positioning rod, and the surface of the positioning rod is slidably connected with the inner wall of the circular hole block.
[0021] The effects achieved by the above components are that the positioning rod can be inserted into the inside of the round hole block to assist in limiting the round hole L plate, and the shaking of the round hole L plate in use is reduced.
[0022] Compared with the prior art, the utility model has the advantages and positive effects that:
[0023] In the utility model, the protection device can intercept large bulk stone and sundries from the outside, so that the large bulk stone on the ground in the construction process of the excavator is prevented from being accidentally stuck in the buffer spring, the buffer spring is prevented from being jammed or squeezed, the normal extension and retraction of the buffer spring is ensured, and the use safety and efficiency of the buffer spring are improved. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0025] Figure 2 It is a partial structure schematic view of a round cover of the utility model;
[0026] Figure 3 It is a partial structure schematic view of a cylinder of the utility model;
[0027] Figure 4 It is a partial structure schematic view of a push ring of the utility model;
[0028] Figure 5 It is an enlarged view of A of the utility model; Figure 4
[0029] Legend: 1, oil cylinder; 2, connecting frame; 3, fixed block; 4, buffer spring; 5, protection device; 51, cylinder; 52, rectangular hole; 53, rectangular block; 54, guide rod; 55, return spring; 56, limiting plate; 57, reinforcing rib; 58, round cover; 59, round hole plate; 510, rubber ring; 511, through hole; 512, push ring; 6, connecting device; 61, screw; 62, screw hole ring; 63, anti-skid block; 64, round hole block; 65, round hole L plate; 66, positioning rod. DETAILED DESCRIPTION
[0030] Refer to Figures 1-5 The embodiment shown discloses a tensioning device for a light excavator, which comprises a cylinder 1, a connecting frame 2 arranged on one side of the cylinder 1, a fixed block 3 arranged at an end of the cylinder 1 away from the connecting frame 2, a buffer spring 4 arranged on the surface of the cylinder 1, the buffer spring 4 being located between the fixed block 3 and the connecting frame 2, a protection device 5 arranged on one side of the buffer spring 4, the protection device 5 comprising a cylinder 51, a connecting device 6 arranged between the cylinder 51 and the fixed block 3, the cylinder 51 being sleeved on the surface of the buffer spring 4, a rectangular hole 52 being formed on one side of the cylinder 51, a rectangular block 53 being fixedly connected to one side of the cylinder 51, a guide rod 54 being fixedly connected to one side of the rectangular block 53, a circular cover 58 being slidably connected to the inner wall of the cylinder 51, the circular cover 58 being sleeved on the surface of the buffer spring 4, a circular hole plate 59 being fixedly connected to one side of the circular cover 58, the surface of the circular hole plate 59 being slidably connected to the inner wall of the rectangular hole 52, the surface of the guide rod 54 being slidably connected to the inner wall of the circular hole plate 59, a return spring 55 being sleeved on the surface of the guide rod 54, one end of the return spring 55 being fixedly connected to the rectangular block 53, the other end of the return spring 55 being fixedly connected to the circular hole plate 59, a push ring 512 being fixedly connected to one side of the connecting frame 2, the surface of the push ring 512 being larger than the inner wall of the circular cover 58, by arranging the protection device 5, first, the cylinder 51 and the circular cover 58 are sleeved on the surface of the buffer spring 4, and the cylinder 51 is assembled and fixed with the fixed block 3 through the connecting device 6, at this time, under the reaction force of the return spring 55, the return spring 55 pushes the circular hole plate 59 to move left and right inside the rectangular hole 52, the circular hole plate 59 moves left and right along the surface of the guide rod 54, and the circular hole plate 59 drives the circular cover 58 to move in the direction of approaching the connecting frame 2 inside the cylinder 51, when the circular cover 58 moves to the position of abutting the surface of the push ring 512, the cylinder 51 cooperates with the circular cover 58 to completely wrap the buffer spring 4 and intercept large-volume debris or stones outside, so as to protect the buffer spring 4, reduce the situation that large-volume stones on the ground in the construction process of the excavator are accidentally stuck in the buffer spring 4, cause the buffer spring 4 to be jammed or produce extrusion deformation, and affect the normal extension and contraction of the buffer spring 4, and improve the use safety and efficiency of the buffer spring 4.
[0031] Reference Figure 2 and Figure 3As shown, the embodiment discloses that the one end of the guide rod 54 is fixedly connected with the limiting plate 56 away from the rectangular block 53, the surface of the limiting plate 56 is larger than the inner wall of the round hole plate 59, by arranging the limiting plate 56, the limiting plate 56 can be made of rubber material to intercept the round hole plate 59 in the moving process, reducing the direct collision and abrasion between the round hole plate 59 and the inner wall of the rectangular hole 52 in the moving process, the one end of the round cover 58 is fixedly connected with the rubber ring 510 away from the cylinder 51, the surface size and shape of the rubber ring 510 are matched with the surface size and shape of the push ring 512, by arranging the rubber ring 510, the rubber ring 510 can separate the round cover 58 and the push ring 512, reducing the collision between the round cover 58 and the surface of the push ring 512 in the moving process and the large abrasion.
[0032] Referring to Figure 2 and Figure 3 As shown, the embodiment discloses that the surface of the round cover 58 is provided with a plurality of through holes 511, the plurality of through holes 511 all penetrate the round cover 58, by arranging the through holes 511, the through holes 511 can increase the air flow of the round cover 58, improve the heat dissipation efficiency inside the round cover 58, the surface of the cylinder 51 is fixedly connected with a plurality of reinforcing ribs 57, the plurality of reinforcing ribs 57 are arranged at equal distances, by arranging the reinforcing ribs 57, the reinforcing ribs 57 can increase the strength of the cylinder 51, reducing the deformation of the cylinder 51 caused by the collision or extrusion of external objects in the using process.
[0033] Referring to Figure 3 , Figure 4 and Figure 5 As shown, the embodiment discloses that the connecting device 6 comprises a screw rod 61, the screw rod 61 is fixedly connected with the fixed block 3, the surface of the screw rod 61 is threadedly connected with a screw hole ring 62, one side of the cylinder 51 is fixedly connected with a round hole L plate 65, the surface size and shape of the screw rod 61 are matched with the inner wall size and shape of the round hole L plate 65, the surface of the screw hole ring 62 is larger than the inner wall of the round hole L plate 65, by arranging the connecting device 6, first manually moving the cylinder 51, so that the cylinder 51 drives the round cover 58 to move, so that the cylinder 51 drives the round hole L plate 65 to move, when the round hole L plate 65 moves to the position of being sleeved on the surface of the screw rod 61, the cylinder 51 and the round cover 58 are all sleeved on the surface of the buffer spring 4, at this time, manually rotating the screw hole ring 62, so that the screw hole ring 62 moves up and down along the surface of the screw rod 61, when the screw hole ring 62 moves to the position of extruding the surface of the round hole L plate 65, the round hole L plate 65 is connected and fixed with the fixed block 3 under the extrusion of the screw hole ring 62, thereby achieving the assembly between the protection device 5 and the fixed block 3, at the same time, the protection device 5 can be conveniently disassembled subsequently, improving the use flexibility of the protection device 5 and the convenience of the later maintenance.
[0034] Referring to Figure 3 , Figure 4 and Figure 5As shown, the embodiment discloses that the surface of the screw hole ring 62 is fixedly connected with a plurality of anti-skid blocks 63, and the plurality of anti-skid blocks 63 are arranged at equal distances. By arranging the anti-skid blocks 63, the anti-skid blocks 63 can intercept the hands, so as to reduce the situation that the hands slip when manually rotating the screw hole ring 62. One side of the screw rod 61 is fixedly connected with a round hole block 64, and the round hole block 64 is fixedly connected with the fixed block 3. One side of the round hole L plate 65 is fixedly connected with a positioning rod 66, and the surface of the positioning rod 66 is slidably connected with the inner wall of the round hole block 64. By arranging the positioning rod 66 and the round hole block 64, the positioning rod 66 can be inserted into the inner position of the round hole block 64 to assist in limiting the round hole L plate 65, so as to reduce the situation that the round hole L plate 65 shakes in the use process.
[0035] Working principle: first, the fixed block 3 at one end of the oil cylinder 1 is fixedly installed with the excavator frame, then the connecting frame 2 at the other end of the oil cylinder 1 is installed and connected with the track wheel, when the oil cylinder 1 is stretched or retracted, the position of the excavator track wheel can be changed, and then the tightness of the excavator track can be adjusted. When the track is loose, the buffer spring 4 cooperates with the oil cylinder 1 to increase the tensioning force. When the track is too tight, the buffer spring 4 cooperates with the oil cylinder 1 to reduce the tensioning force, so as to maintain the appropriate tensioning state of the track. The buffer spring 4 plays a good buffering role, so that the excavator track is elastic and tight, and the excavator can travel on any terrain.
[0036] First, manually move the cylinder 51, so that the cylinder 51 drives the round cover 58 to move, so that the cylinder 51 drives the round hole L plate 65 to move. When the round hole L plate 65 moves to the position of being sleeved on the surface of the screw rod 61, the cylinder 51 and the round cover 58 are both sleeved on the surface of the buffer spring 4. At this time, manually rotate the screw hole ring 62, so that the screw hole ring 62 moves up and down along the surface of the screw rod 61. When the screw hole ring 62 moves to the position of pressing the surface of the round hole L plate 65, the round hole L plate 65 is fixedly connected with the fixed block 3 under the pressing action of the screw hole ring 62, so as to achieve the assembly between the protection device 5 and the fixed block 3. At this time, under the action of the restoring force of the restoring spring 55, the restoring spring 55 pushes the round hole plate 59 to move left and right inside the rectangular hole 52, so that the round hole plate 59 moves left and right along the surface of the guide rod 54, so that the round hole plate 59 drives the round cover 58 to move in the direction of approaching the connecting frame 2 inside the cylinder 51. When the round cover 58 moves to the position of being attached to the surface of the push ring 512, the cylinder 51 cooperates with the round cover 58 to completely wrap the buffer spring 4 and intercept large-volume sundries or stones from the outside, so as to protect the buffer spring 4.
[0037] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and alteration of the above embodiments without departing from the technical content of the present application, according to the technical essence of the present application, still belong to the protection scope of the present application. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connecting" should be understood in a broad sense. For example, it can be fixed connection, detachable connection or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium; and it can be internal communication of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A tensioning device for a light excavator, comprising a hydraulic cylinder (1), characterized in that: A connecting frame (2) is provided on one side of the hydraulic cylinder (1), and a fixing block (3) is provided at the end of the hydraulic cylinder (1) away from the connecting frame (2). A buffer spring (4) is provided on the surface of the hydraulic cylinder (1), and the buffer spring (4) is located between the fixing block (3) and the connecting frame (2). A protective device (5) is provided on one side of the buffer spring (4). The protective device (5) includes a cylinder (51). A connecting device (6) is provided between the cylinder (51) and the fixing block (3). The cylinder (51) is sleeved on the surface of the buffer spring (4). A rectangular hole (52) is opened on one side of the cylinder (51). A rectangular block (53) is fixedly connected to the side of the cylinder (51) near the rectangular hole (52). A rectangular block (53) is fixedly connected to one side of the rectangular block (53). There is a guide rod (54), and a circular cover (58) is slidably connected to the inner wall of the cylinder (51). The circular cover (58) is sleeved on the surface of the buffer spring (4). A circular hole plate (59) is fixedly connected to one side of the circular cover (58). The surface of the circular hole plate (59) is slidably connected to the inner wall of the rectangular hole (52). The surface of the guide rod (54) is slidably connected to the inner wall of the circular hole plate (59). A reset spring (55) is sleeved on the surface of the guide rod (54). One end of the reset spring (55) is fixedly connected to the rectangular block (53). The other end of the reset spring (55) is fixedly connected to the circular hole plate (59). A push ring (512) is fixedly connected to one side of the connecting frame (2). The surface of the push ring (512) is larger than the inner wall of the circular cover (58).
2. The tensioning device for a light excavator according to claim 1, characterized in that: The guide rod (54) is fixedly connected to a limiting plate (56) at one end away from the rectangular block (53), and the surface of the limiting plate (56) is larger than the inner wall of the circular hole plate (59).
3. The tensioning device for a light excavator according to claim 1, characterized in that: A rubber ring (510) is fixedly connected to one end of the dome (58) away from the cylinder (51), and the surface size and shape of the rubber ring (510) are adapted to the surface size and shape of the push ring (512).
4. The tensioning device for a light excavator according to claim 1, characterized in that: The surface of the dome (58) is provided with a plurality of through holes (511), and the plurality of through holes (511) all penetrate the dome (58).
5. The tensioning device for a light excavator according to claim 1, characterized in that: The surface of the cylinder (51) is fixedly connected with a plurality of reinforcing ribs (57), which are arranged at equal intervals.
6. The tensioning device for a light excavator according to claim 1, characterized in that: The connecting device (6) includes a screw (61), which is fixedly connected to the fixing block (3). The surface of the screw (61) is threaded with a screw hole ring (62). A circular hole L plate (65) is fixedly connected to one side of the cylinder (51). The surface size and shape of the screw (61) are adapted to the inner wall size and shape of the circular hole L plate (65). The surface of the screw hole ring (62) is larger than the inner wall of the circular hole L plate (65).
7. The tensioning device for a light excavator according to claim 6, characterized in that: The surface of the screw hole ring (62) is fixedly connected with a plurality of anti-slip blocks (63), and the plurality of anti-slip blocks (63) are arranged at equal distances.
8. The tensioning device for a light excavator according to claim 6, characterized in that: A circular hole block (64) is fixedly connected to one side of the screw (61), and the circular hole block (64) is fixedly connected to the fixing block (3). A positioning rod (66) is fixedly connected to one side of the circular hole L plate (65), and the surface of the positioning rod (66) is slidably connected to the inner wall of the circular hole block (64).