CN215409529U

CN215409529U - Novel tensioning oil cylinder applied to tensioning device of excavator

Info

Publication number: CN215409529U
Application number: CN202121483973.7U
Authority: CN
Inventors: 吴世灿
Original assignee: Quanzhou Shangde Spring Co ltd
Current assignee: Quanzhou Shangde Spring Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-04
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a novel tensioning oil cylinder applied to an excavator tensioning device, which comprises an oil cylinder, wherein an annular adjusting block is fixedly sleeved on the outer wall of the oil cylinder, which is close to an upper port, a movable plate is sleeved on the outer peripheral wall of the oil cylinder in a sliding manner at the position below the adjusting block, the lower end of the oil cylinder is fixedly connected with a movable shaft, the lower end of the movable shaft movably penetrates through a bottom block, a buffer spring is fixedly connected between the bottom block and the movable plate together, two fixed blocks are uniformly and fixedly connected on the outer peripheral surface of the oil cylinder at the position below the movable plate, threaded rods are rotatably connected between the two fixed blocks and the lower end of the adjusting block together, and the two threaded rods are threaded through the movable plate. The utility model can adjust the expansion degree of the buffer spring, so that the buffer performance is kept good, the protection of the oil cylinder is further improved, and the service life of the device is prolonged.

Description

Novel tensioning oil cylinder applied to tensioning device of excavator

Technical Field

The utility model relates to the technical field of excavators, in particular to a novel tensioning oil cylinder applied to an excavator tensioning device.

Background

The excavator tensioning device acts on a moving track of an excavator, the excavator tensioning device directly influences whether the movement of the excavator is normal or not, a tensioning oil cylinder is the most important mechanical element in the tensioning device and provides hydraulic pressure to guarantee the normal work of the tensioning device, a buffer spring is usually arranged on the existing tensioning oil cylinder, the effect of the buffer spring is that the tensioning degree of the track has elasticity, the excavator can move on various terrains, meanwhile, the tensioning oil cylinder cannot be damaged, the buffer spring on the existing tensioning oil cylinder is usually welded with the tensioning oil cylinder, the elasticity of the buffer spring cannot be adjusted, and after the buffer spring is used for a long time, elastic fatigue can occur, the elastic force is weakened, and the normal buffering effect cannot be achieved.

Therefore, a novel tensioning oil cylinder applied to a tensioning device of an excavator is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a novel tensioning oil cylinder applied to an excavator tensioning device.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a be applied to novel tight hydro-cylinder that rises among the excavator tight device that rises, includes the hydro-cylinder, the hydro-cylinder is close to fixed the cup joint on the outer wall of upper port and has been had annular regulating block, the movable plate has been cup jointed in the sliding of regulating block below position on the hydro-cylinder periphery wall, hydro-cylinder lower extreme fixedly connected with loose axle, the activity of loose axle lower extreme has run through the bottom block, common fixedly connected with buffer spring between bottom block and the movable plate, on the outer peripheral face of hydro-cylinder and at two fixed blocks of the even fixedly connected with in movable plate below position, two all rotate jointly between fixed block and the regulating block lower extreme and be connected with the threaded rod, two the equal screw thread of threaded rod runs through the movable plate.

Preferably, the lower end of the movable shaft is fixedly connected with a limiting block, and the diameter of the limiting block is larger than that of the movable shaft.

Preferably, an annular transmission cavity is formed in the adjusting block, four belt wheels which are distributed in a rectangular shape are rotatably connected in the transmission cavity, a transmission belt is sleeved on each belt wheel, and the upper ends of the two threaded rods are fixedly connected with the lower ends of the two belt wheels which are arranged oppositely.

Preferably, the upper end of the adjusting block is rotatably connected with a hexagonal block, and the hexagonal block is fixedly connected with the upper end of one of the belt wheels.

Preferably, the lower end of the bottom block is fixedly connected with two mounting blocks.

Preferably, the telescopic end of the oil cylinder is fixedly connected with a fixing plate.

Compared with the prior art, the device has the advantages that:

through rotating the hexagonal piece, under the transmission of drive belt and band pulley, can drive two threaded rods synchronous rotations of sinking simultaneously, and then can make the movable plate shift up or move down along the hydro-cylinder, compress or tensile to buffer spring, and then carry out free regulation to buffer spring's tight power that rises, make its resiliency keep good, further improve the protection to the hydro-cylinder, improve the life of device.

Drawings

Fig. 1 is a perspective view of a novel tensioning cylinder applied to a tensioning device of an excavator, which is provided by the utility model;

fig. 2 is a structural perspective view of an overlooking structure of an adjusting block in a novel tension cylinder applied to a tension device of an excavator.

In the figure: the device comprises an oil cylinder 1, an adjusting block 2, a moving plate 3, a movable shaft 4, a bottom block 5, a buffer spring 6, a belt wheel 7, a transmission belt 8, a fixed block 9, a threaded rod 10, a hexagonal block 11, a limiting block 12, an installation block 13 and a fixing plate 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a novel tension oil cylinder applied to an excavator tension device comprises an oil cylinder 1, an annular adjusting block 2 is fixedly sleeved on the outer wall of the oil cylinder 1 close to an upper port, a movable plate 3 is sleeved on the outer peripheral wall of the oil cylinder 1 and is slidably sleeved below the adjusting block 2, the movable plate 3 is annular, a movable shaft 4 is fixedly connected to the lower end of the oil cylinder 1, a bottom block 5 is movably penetrated through the lower end of the movable shaft 4, a buffer spring 6 is fixedly connected between the bottom block 5 and the movable plate 3 together to play a role of buffering, the oil cylinder 1 is protected, the two fixing blocks 9 are uniformly and fixedly connected to the outer peripheral face of the oil cylinder 1 and below the movable plate 3, the two fixing blocks 9 and the lower end of the adjusting block 2 are connected with threaded rods 10 in a rotating mode together, the two threaded rods 10 penetrate through the movable plate 3 in a threaded mode, and the movable plate 3 can be driven to move up or down when the threaded rods 10 rotate.

The lower end of the movable shaft 4 is fixedly connected with a limiting block 12, the diameter of the limiting block 12 is larger than that of the movable shaft 4, the limiting effect is achieved, and the bottom block 5 is prevented from being separated from the movable shaft 4.

Set up annular transmission chamber in the regulating block 2, the transmission intracavity rotates and is connected with four band pulleys 7 that are the rectangle and distributes, common cover is equipped with drive belt 8 on four band pulleys 7, drive belt 8 can make four band pulleys 7 synchronous rotation, 7 lower extreme fixed connection of band pulley of two threaded rod 10 upper ends and two relative settings, 2 upper ends of regulating block rotate and are connected with hexagonal piece 11,

hexagonal piece

11 and 7 upper end fixed connection of one of them band pulley, hexagonal piece 11 facilitates the use of tools and rotates, when hexagonal piece 11 drives a band pulley 7 and rotates, remaining band pulley 7 is synchronous rotation also.

The lower end of the bottom block 5 is fixedly connected with two mounting blocks 13 for mounting crawler wheels of an excavator, and the telescopic end of the oil cylinder 1 is fixedly connected with a fixing plate 14 for fixing the tensioning oil cylinder.

The utility model is used in the tension device of the excavator, two mounting blocks 13 are used for mounting the crawler wheels of the excavator, a fixing plate 14 is fixedly mounted on the frame body of the excavator, when an oil cylinder 1 extends and contracts, the position of the crawler wheels of the excavator can be changed, the tightness of the crawler of the excavator is further adjusted, a buffer spring 6 has good buffer effect, when the crawler of the excavator is elastically tightened, the excavator can be ensured to run on any terrain, the oil cylinder 1 is protected, when the tension force of the buffer spring 6 is reduced, the buffer spring does not need to be replaced, only a tool is used for rotating a hexagonal block 11, when the hexagonal block 11 rotates, the belt wheels 7 synchronously rotate by using the action of a driving belt 8, then two threaded rods 10 can be driven, when the two threaded rods 10 rotate, a moving plate 3 can be driven to move downwards, then the buffer spring 6 is compressed, the tension force is improved, otherwise, the tension force is reduced, so as to achieve the function of freely adjusting the tension force of the buffer spring 6 and further improve the protection function of the oil cylinder 1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A novel tension oil cylinder applied to a tension device of an excavator comprises an oil cylinder (1), it is characterized in that the outer wall of the oil cylinder (1) close to the upper port is fixedly sleeved with an annular adjusting block (2), a movable plate (3) is sleeved on the outer peripheral wall of the oil cylinder (1) in a sliding manner at the position below the adjusting block (2), the lower end of the oil cylinder (1) is fixedly connected with a movable shaft (4), the lower end of the movable shaft (4) is movably penetrated with a bottom block (5), a buffer spring (6) is fixedly connected between the bottom block (5) and the moving plate (3), the oil cylinder is characterized in that two fixing blocks (9) are fixedly connected to the outer peripheral surface of the oil cylinder (1) and are evenly arranged below the movable plate (3) in a position, a threaded rod (10) is connected between the fixing blocks (9) and the lower end of the adjusting block (2) in a co-rotating mode, and the threaded rod (10) penetrates through the movable plate (3) in a threaded mode.

2. The novel tension cylinder applied to the tension device of the excavator as claimed in claim 1, wherein a limit block (12) is fixedly connected to the lower end of the movable shaft (4), and the diameter of the limit block (12) is larger than that of the movable shaft (4).

3. The novel tension cylinder applied to the tension device of the excavator as claimed in claim 1, wherein an annular transmission cavity is formed in the adjusting block (2), four belt pulleys (7) are rotatably connected in the transmission cavity, a transmission belt (8) is sleeved on the four belt pulleys (7), and the upper ends of the two threaded rods (10) are fixedly connected with the lower ends of the two belt pulleys (7) which are oppositely arranged.

4. The novel tension cylinder applied to the tension device of the excavator as claimed in claim 3, wherein the upper end of the adjusting block (2) is rotatably connected with a hexagonal block (11), and the hexagonal block (11) is fixedly connected with the upper end of one belt wheel (7).

5. The novel tension cylinder applied to the tension device of the excavator as claimed in claim 1, wherein the lower end of the bottom block (5) is fixedly connected with two mounting blocks (13).

6. The novel tension cylinder applied to the tension device of the excavator as claimed in claim 1, wherein the telescopic end of the cylinder (1) is fixedly connected with a fixing plate (14).