Bucket rod hydraulic cylinder protection device of excavator

Abstract

The bucket rod hydraulic cylinder protection device comprises a first clamping plate and a second clamping plate, a main body to be protected is arranged between the first clamping plate and the second clamping plate, and a plurality of clamping assemblies are arranged between the second clamping plate and the main body to be protected. The protection assembly comprises a protection plate movably arranged between the first clamping plate and the second clamping plate, a plurality of T-shaped sliding grooves are symmetrically formed in the adjacent inner side walls of the first clamping plate and the second clamping plate, a plurality of pairs of T-shaped sliding blocks are symmetrically and fixedly installed on the outer side wall of the protection plate, the T-shaped sliding blocks are slidably arranged in the T-shaped sliding grooves, and an elastic metal protection plate is fixedly installed on the outer side wall of the protection plate. Through the arrangement of the protection assembly, when broken stone is splashed to a main body to be protected, the elastic metal protection plate carries out preliminary protection, and when impact force is large, the protection plate stably slides between the first clamping plate and the second clamping plate in the T-shaped sliding groove and the stable sliding groove through the T-shaped sliding block and the sliding block, and the buffering assembly absorbs the impact force.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder protection, in particular to a bucket arm hydraulic cylinder protection device of an excavator. Background Art

[0002] In the field of modern engineering construction and mining, excavators are an important type of engineering machinery. Their working environment is usually harsh, and they are often affected by various complex working conditions such as sand, soil, dust and other particles, as well as severe cold and heat. As one of the core working parts of the excavator, the normal operation and maintenance of its driving mechanism, the arm hydraulic cylinder, is crucial, which directly affects the working efficiency and service life of the excavator.

[0003] In the structure of an excavator, the arm is also called a forearm and is usually connected to the bucket. Currently, most of the arm designs are hollow to reduce weight, and support plates are added to increase strength. However, the more support plates there are, the higher the strength and the heavier the arm. In addition, the hydraulic cylinder is frequently used, and its service life is often affected by external impact and dust.

[0004] The boom hydraulic cylinder drives the piston to move through high-pressure oil, thereby realizing the expansion and contraction of the boom for excavation and loading operations. However, in actual use, due to long-term high-load work, the boom hydraulic cylinder is easily damaged by external impact. Therefore, it is necessary to propose a boom hydraulic cylinder protection device for excavators. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a bucket arm hydraulic cylinder protection device for an excavator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A bucket arm hydraulic cylinder protection device for an excavator, comprising a first clamping plate and a second clamping plate, a main body to be protected is arranged between the first clamping plate and the second clamping plate, a protection component is arranged between the first clamping plate and the second clamping plate, a plurality of clamping components are arranged between the second clamping plate and the main body to be protected, and a first rubber pad is fixedly installed on a side of the first clamping plate close to the main body to be protected;

[0008] The protection component includes a protection plate movably arranged between a first clamping plate and a second clamping plate, a plurality of T-shaped grooves are symmetrically provided on adjacent inner walls of the first clamping plate and the second clamping plate, a plurality of pairs of T-shaped sliders are symmetrically fixedly installed on the outer wall of the protection plate, the T-shaped sliders are slidably arranged in the T-shaped grooves, and an elastic metal guard plate is fixedly installed on the outer wall of the protection plate.

[0009] Preferably, a plurality of stable sliding grooves are symmetrically provided on the adjacent inner side walls of the first and second clamping plates, a plurality of pairs of sliding blocks are symmetrically fixedly installed on the outer side wall of the protective plate, the sliding blocks are slidably arranged in the stable sliding grooves, a plurality of supporting plates are fixedly installed on the inner side walls of the first and second clamping plates, and a buffer assembly is arranged between the supporting plates and the protective plate;

[0010] Used to protect against splashing gravel. When gravel splashes towards the main body to be protected, the elastic metal guard plate provides initial protection. When the impact force is large, the guard plate slides stably between the first clamping plate and the second clamping plate in the T-shaped slide groove and the stable slide groove through the T-shaped slider and the sliding block, and the impact force is absorbed by the buffer component.

[0011] Preferably, the buffer assembly comprises a fixed cavity fixedly mounted on the outer side wall of the support plate, a limit plate is movably arranged in the fixed cavity, a sliding column is slidably arranged in the fixed cavity, and one end of the sliding column is fixedly connected to the limit plate;

[0012] The other end of the sliding column slides through the top of the fixed cavity, the end of the sliding column is highly connected to the protective plate, a functional spring is arranged in the fixed cavity, and the functional spring is elastically connected between the bottom end of the fixed cavity and the bottom end of the limit plate;

[0013] It is used to absorb external impact force when the protective plate moves. When the protective plate is subjected to external impact force, the sliding column and the limit plate compress the functional spring and absorb the impact force under the reaction force of the functional spring.

[0014] Preferably, the clamping assembly comprises a rotating shaft that rotates and passes through the second clamping plate, a threaded sleeve is coaxially fixedly installed at one end of the rotating shaft close to the main body to be protected, a threaded column is installed in the inner thread of the threaded sleeve, a fixed handle is fixedly installed at the other end of the rotating shaft, and a clamping plate is movably arranged between the second clamping plate and the main body to be protected;

[0015] The threaded column is rotatably mounted on the outer wall of the clamping plate at one end thereof close to the clamping plate, a second rubber pad is fixedly mounted on the side of the clamping plate close to the main body to be protected, a plurality of limit rods are fixedly mounted on the outer wall of the clamping plate, the limit rods slide through the second clamping plate, and the other ends of the plurality of limit rods are fixedly connected by a connecting piece;

[0016] It is used to fasten and install the first clamping plate and the second clamping plate, fit the outer wall of the main body to be protected with the first rubber pad, rotate the rotating shaft through the fixed handle, and the rotating shaft drives the threaded sleeve to rotate synchronously, so that the threaded column moves, so that the second rubber pad on the clamping plate fits with the outer wall of the main body to be protected, and the limit rod prevents the clamping plate from rotating, thereby installing the first clamping plate and the second clamping plate.

[0017] The utility model has the following beneficial effects:

[0018] 1. By setting up the protection component, when gravel splashes towards the protected body, the elastic metal guard plate provides preliminary protection. When the impact force is large, the protection plate slides stably between the first clamping plate and the second clamping plate in the T-shaped slide groove and the stable slide groove through the T-shaped slider and the sliding block, and the impact force is absorbed by the buffer component.

[0019] 2. By setting up a clamping assembly, the outer wall of the main body to be protected is fitted with the first rubber pad. The rotating shaft is rotated by a fixed handle. The rotating shaft drives the threaded sleeve to rotate synchronously, so that the threaded column moves, so that the second rubber pad on the clamping plate is fitted with the outer wall of the main body to be protected. The limit rod prevents the clamping plate from rotating, and the first clamping plate and the second clamping plate are installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the external structure of a bucket arm hydraulic cylinder protection device for an excavator proposed by the utility model;

[0021] Figure 2 It is a schematic diagram of the structure between the first clamping plate and the second clamping plate of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the buffer component of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0024] Figure 5 For this utility model Figure 2 A magnified view of the structure at A.

[0025] In the figure: 1. first clamping plate; 2. second clamping plate; 3. main body to be protected; 4. protection component; 41. protection plate; 42. T-shaped slide groove; 43. T-shaped slider; 44. elastic metal guard plate; 45. stable slide groove; 46. sliding block; 47. support plate; 48. buffer component; 481. fixed cavity; 482. limit plate; 483. sliding column; 484. functional spring; 5. clamping component; 51. rotating shaft; 52. threaded sleeve; 53. threaded column; 54. fixed handle; 55. clamping plate; 56. second rubber pad; 57. limit rod; 58. connecting piece; 6. first rubber pad. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Reference Figure 1-5 A protective device for a boom hydraulic cylinder of an excavator comprises a first clamping plate 1 and a second clamping plate 2, a main body 3 to be protected is arranged between the first clamping plate 1 and the second clamping plate 2, a protective component 4 is arranged between the first clamping plate 1 and the second clamping plate 2, a plurality of clamping components 5 are arranged between the second clamping plate 2 and the main body 3 to be protected, and a first rubber pad 6 is fixedly installed on one side of the first clamping plate 1 close to the main body 3 to be protected;

[0029] The protective assembly 4 includes a protective plate 41 movably arranged between the first clamp plate 1 and the second clamp plate 2, and a plurality of T-shaped grooves 42 are symmetrically provided on the adjacent inner walls of the first clamp plate 1 and the second clamp plate 2. A plurality of pairs of T-shaped sliders 43 are symmetrically fixedly installed on the outer wall of the protective plate 41. The T-shaped sliders 43 are slidably arranged in the T-shaped grooves 42, and an elastic metal guard plate 44 is fixedly installed on the outer wall of the protective plate 41.

[0030] A plurality of stable slide grooves 45 are symmetrically provided on adjacent inner walls of the first splint 1 and the second splint 2, a plurality of pairs of sliding blocks 46 are symmetrically fixedly installed on the outer wall of the protective plate 41, the sliding blocks 46 are slidably arranged in the stable slide grooves 45, a plurality of support plates 47 are fixedly installed on the inner walls of the first splint 1 and the second splint 2, a buffer assembly 48 is arranged between the support plate 47 and the protective plate 41.

[0031] When gravel splashes toward the protected body 3, the elastic metal guard plate 44 provides preliminary protection. When the impact force is large, the guard plate 41 slides stably between the first clamping plate 1 and the second clamping plate 2 in the T-shaped slide groove 42 and the stable slide groove 45 through the T-shaped slider 43 and the sliding block 46, and the impact force is absorbed by the buffer component 48.

[0032] The buffer assembly 48 includes a fixed cavity 481 fixedly mounted on the outer wall of the support plate 47 , a limit plate 482 is movably arranged in the fixed cavity 481 , a sliding column 483 is slidably arranged in the fixed cavity 481 , and one end of the sliding column 483 is fixedly connected to the limit plate 482 .

[0033] The other end of the sliding column 483 slides through the top of the fixed cavity 481, and the end of the sliding column 483 is highly connected to the protective plate 41. A functional spring 484 is arranged in the fixed cavity 481, and the functional spring 484 is elastically connected between the bottom end of the fixed cavity 481 and the bottom end of the limit plate 482.

[0034] The clamping assembly 5 includes a rotating shaft 51 that rotates and passes through the second clamping plate 2. A threaded sleeve 52 is coaxially fixedly installed at one end of the rotating shaft 51 close to the main body 3 to be protected. A threaded column 53 is installed on the inner thread of the threaded sleeve 52. A fixed handle 54 is fixedly installed on the other end of the rotating shaft 51. A clamping plate 55 is movably arranged between the second clamping plate 2 and the main body 3 to be protected.

[0035] The threaded column 53 is rotatably mounted on one end of the clamping plate 55, and a second rubber pad 56 is fixedly mounted on the side of the clamping plate 55 close to the protected body 3. A plurality of limit rods 57 are fixedly mounted on the outer wall of the clamping plate 55. The limit rods 57 slide through the second clamping plate 2, and the other ends of the limit rods 57 are fixedly connected by a connecting piece 58.

[0036] In the utility model, the outer wall of the main body 3 to be protected is fitted with the first rubber pad 6, and the rotating shaft 51 is rotated by the fixed handle 54. The rotating shaft 51 drives the threaded sleeve 52 to rotate synchronously, so that the threaded column 53 moves, so that the second rubber pad 56 on the clamping plate 55 is fitted with the outer wall of the main body 3 to be protected, and the limit rod 57 prevents the clamping plate 55 from rotating. The first clamping plate 1 and the second clamping plate 2 are installed. When gravel splashes toward the main body 3 to be protected, the elastic metal guard plate 44 provides preliminary protection. When the impact force is large, the protective plate 41 slides stably between the first clamping plate 1 and the second clamping plate 2 in the T-shaped slide groove 42 and the stable slide groove 45 through the T-shaped slider 43 and the sliding block 46. The sliding column 483 and the limit plate 482 compress the functional spring 484, and absorb the impact force under the reaction force of the functional spring 484.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A boom hydraulic cylinder protection device for an excavator, comprising a first clamping plate (1) and a second clamping plate (2), characterized in that: A main body (3) to be protected is arranged between the first clamping plate (1) and the second clamping plate (2), a protective component (4) is arranged between the first clamping plate (1) and the second clamping plate (2), a plurality of clamping components (5) are arranged between the second clamping plate (2) and the main body (3) to be protected, and a first rubber pad (6) is fixedly mounted on a side of the first clamping plate (1) close to the main body (3) to be protected; The protection assembly (4) comprises a protection plate (41) movably arranged between a first clamping plate (1) and a second clamping plate (2); a plurality of T-shaped grooves (42) are symmetrically provided on adjacent inner walls of the first clamping plate (1) and the second clamping plate (2); a plurality of pairs of T-shaped sliding blocks (43) are symmetrically fixedly installed on the outer wall of the protection plate (41); the T-shaped sliding blocks (43) are slidably arranged in the T-shaped grooves (42); and an elastic metal guard plate (44) is fixedly installed on the outer wall of the protection plate (41).

2. The dipper arm hydraulic cylinder protection device of an excavator according to claim 1, characterized in that: A plurality of stable slide grooves (45) are symmetrically provided on the adjacent inner side walls of the first clamping plate (1) and the second clamping plate (2); a plurality of pairs of sliding blocks (46) are symmetrically fixedly installed on the outer side wall of the protective plate (41); the sliding blocks (46) are slidably arranged in the stable slide grooves (45); a plurality of supporting plates (47) are fixedly installed on the inner side walls of the first clamping plate (1) and the second clamping plate (2); a buffer assembly (48) is arranged between the supporting plates (47) and the protective plate (41).

3. The boom hydraulic cylinder protection device of an excavator according to claim 2, characterized in that: The buffer assembly (48) comprises a fixed cavity (481) fixedly mounted on the outer wall of the support plate (47), a limit plate (482) being movably arranged in the fixed cavity (481), a sliding column (483) being slidably arranged in the fixed cavity (481), and one end of the sliding column (483) being fixedly connected to the limit plate (482).

4. The boom hydraulic cylinder protection device for an excavator according to claim 3, characterized in that: The other end of the sliding column (483) slides through the top of the fixed cavity (481), and the end of the sliding column (483) is highly connected to the protective plate (41). A functional spring (484) is arranged in the fixed cavity (481), and the functional spring (484) is elastically connected between the bottom end of the fixed cavity (481) and the bottom end of the limit plate (482).

5. The boom hydraulic cylinder protection device for an excavator according to claim 1, characterized in that: The clamping assembly (5) comprises a rotating shaft (51) which rotates and passes through the second clamping plate (2); a threaded sleeve (52) is coaxially fixedly installed at one end of the rotating shaft (51) close to the main body (3) to be protected; a threaded column (53) is internally threadedly installed in the threaded sleeve (52); a fixed handle (54) is fixedly installed at the other end of the rotating shaft (51); and a clamping plate (55) is movably arranged between the second clamping plate (2) and the main body (3) to be protected.

6. The boom hydraulic cylinder protection device for an excavator according to claim 5, characterized in that: One end of the threaded column (53) close to the clamping plate (55) is rotatably mounted on the outer wall of the clamping plate (55); a second rubber pad (56) is fixedly mounted on the side of the clamping plate (55) close to the main body (3) to be protected; a plurality of limit rods (57) are fixedly mounted on the outer wall of the clamping plate (55); the limit rods (57) slide through the second clamping plate (2); and the other ends of the plurality of limit rods (57) are fixedly connected via a connecting piece (58).

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