CN214138747U

CN214138747U - Tensioning device of high-horsepower bulldozer

Info

Publication number: CN214138747U
Application number: CN202023068661.8U
Authority: CN
Inventors: 阎鹏早; 金丹; 许燕军
Original assignee: Shantui Chutian Construction Machinery Co Ltd
Current assignee: Shantui Chutian Construction Machinery Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-09-07
Anticipated expiration: 2030-12-18

Abstract

A tensioning device of a high-horsepower bulldozer relates to the technical field of tensioning devices and solves the problem of complex structure of the tensioning device, and comprises a tensioning oil cylinder, a piston, a guide cylinder, a tensioning spring, a front support and a rear support, wherein the guide cylinder is fixed at the front end of a spring box of a trolley through a bolt; the structure is simple, complex castings such as a push fork and the like in the traditional tensioning device are not needed, and an additional spring cylinder is not needed, so that the cost can be effectively reduced; split type overspeed device tensioner solves the problem of traditional overspeed device tensioner integral type installation difficulty, and the dismouting is more convenient.

Description

Tensioning device of high-horsepower bulldozer

Technical Field

The utility model relates to a overspeed device tensioner especially relates to a overspeed device tensioner of high horsepower bull-dozer.

Background

The crawler-type traveling mechanism bears the whole weight of the bulldozer and is responsible for the traveling function of the bulldozer. The chassis is the foundation of the complete machine, is composed of a plurality of systems, has a relatively complex structure, and is used for receiving the power of an engine to drive and operate the machine. The crawler type travelling mechanism comprises a frame, a travelling device and a suspension. The walking device is used for supporting the machine body and converting the driving torque and the rotary motion transmitted to the driving wheel by the power device into the driving force and the speed required by work and running.

As shown in fig. 1, the traveling device generally comprises a driving sprocket 1, a supporting wheel 5, a riding wheel 2, a tensioning wheel 3 (or a guiding wheel), a track 6 (collectively referred to as "four-wheel-one belt"), a tensioning device 4, and the like. As shown in fig. 2, the tensioner of the conventional high horsepower bulldozer is mounted on a push fork of a guide wheel, and is connected to the guide wheel through the push fork, and a tensioner cylinder is disposed behind a vehicle body.

The above-mentioned conventional high horsepower bulldozer tensioner configuration has the following disadvantages:

1. the number of castings is large and complex, and the push fork, the tensioning oil cylinder and the sliding shoe seat are all castings;

2. the tensioning device is integrated, and the tensioning device, the push fork and the guide wheel are assembled into a whole and then are installed on the trolley, so that the installation is difficult;

3. the spring cylinder has high antirust requirement, the root part of the spring cylinder is exposed outside and is a moving part, and chromium plating and polishing or laser coating and other treatment are needed;

4. the sealing performance requirement is high, the sealing between the root of the spring cylinder and the spring box of the trolley is easy to fall off and leak oil when the trolley works in the front-back movement process all the time.

Disclosure of Invention

In order to solve the problem, the utility model provides a overspeed device tensioner of high horsepower bull-dozer provides the overspeed device tensioner of the split type structure of fixing on the platform frame, and the tensioning hydro-cylinder is in the automobile body front side, and overspeed device tensioner does not link to each other with the guide wheel, need not complicated castings such as push away fork and hydro-cylinder, avoids the oil leak problem moreover, and the structure is simpler, and the performance is better. In order to achieve the above purpose, the utility model adopts the following technical scheme: a tensioning device of a high-horsepower bulldozer comprises a tensioning oil cylinder, a piston, a guide cylinder, a tensioning spring, a front support and a rear support, wherein the guide cylinder is fixed at the front end of a spring box of a trolley through a bolt, the front support is arranged on one side of the guide cylinder, the rear support is fixed on a pivot seat of the trolley through a bolt, the tensioning spring is arranged on the rear support, the piston penetrates through the front support and the tensioning spring through a piston rod and is connected with the rear support, and the tensioning oil cylinder is arranged at the front part of the piston.

Compared with the prior art, the utility model discloses following beneficial effect has: the structure is simple, complex castings such as a push fork and the like in the traditional tensioning device are not needed, and an additional spring cylinder is not needed, so that the cost can be effectively reduced; the split type tensioning device solves the problem that the traditional tensioning device is difficult to install in an integrated mode, and is more convenient to assemble and disassemble; because no additional spring cylinder is arranged, the treatment such as chromium plating and polishing or laser coating is not needed; the structure forms are different, so that the problems that the root of the spring cylinder and the seal in front of the spring box of the trolley are easy to fall off and leak oil when the traditional tensioning device works are fundamentally solved; can solve the defects and problems of the traditional tensioning device, can reduce the manufacturing and using cost and has strong practicability.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a walking device;

FIG. 2 is a schematic diagram of the tensioner of a conventional high horsepower bulldozer;

FIG. 3 is a schematic structural diagram of the present invention;

in the drawings: 1. the device comprises a driving chain wheel, 2, a riding wheel, 3, a tensioning wheel, 4, a tensioning device, 5, a supporting wheel, 6, a crawler belt, 7, a tensioning oil cylinder, 8, a piston, 9, a guide cylinder, 10, a tensioning spring, 11, a front support, 12 and a rear support.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described with reference to fig. 3 and the specific embodiments.

As shown in fig. 3, the tension device of a bulldozer with high horsepower comprises a tension cylinder 7, a piston 8, a guide cylinder 9, a tension spring 10, a front support 11 and a rear support 12, wherein the guide cylinder 9 is fixed at the front end of a spring box of the trolley through bolts, the front support 11 is arranged at one side of the guide cylinder 9, the rear support 12 is fixed on a pivot seat of the trolley through bolts, the tension spring 10 is arranged on the rear support 12, the piston 8 passes through the front support 11 and the tension spring 10 through a piston rod and is connected with the rear support 12, and the tension cylinder 7 is arranged at the front part of the piston 8.

The utility model discloses a theory of operation and working process as follows: grease is injected into a front cavity of the tensioning oil cylinder 7 through an oil injection nozzle and an oil duct, the tensioning oil cylinder 6 is pushed forwards by the pressure of the grease, so that the guiding wheel which is in contact with the tensioning oil cylinder 7 is pushed, and the guiding wheel moves forwards to tension the crawler; the amount of grease injected into the tensioning oil cylinder 7 determines the tensioning degree of the track, and if the track is too tight or the track needs to be disassembled, the oil drain plug can be unscrewed to extrude the grease, so that the tensioning force is reduced. In addition to providing sufficient track tension, the tensioning spring 10 also provides cushioning when the vehicle is traveling over rough terrain or encounters obstacles.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. A tensioning device of a high-horsepower bulldozer comprises a tensioning oil cylinder (7), a piston (8), a guide cylinder (9), a tensioning spring (10), a front support (11) and a rear support (12), and is characterized in that the guide cylinder (9) is fixed at the front end of a spring box of a trolley through bolts, the front support (11) is arranged on one side of the guide cylinder (9), the rear support (12) is fixed on a pivot seat of the trolley through bolts, the tensioning spring (10) is arranged on the rear support (12), the piston (8) penetrates through the front support (11) and the tensioning spring (10) through a piston rod and is connected with the rear support (12), and the tensioning oil cylinder (7) is arranged at the front part of the piston (8).