Supporting and reinforcing control structure for movable arm of excavator

Abstract

The utility model discloses a support strengthening control structure for an excavator movable arm, which relates to the technical field of engineering machinery and comprises an excavator movable arm body, a support frame is arranged in the excavator movable arm body, support blocks are fixedly connected to the side walls of the support frame, a first mounting seat is arranged at the lower end of the excavator movable arm body, and a second mounting seat is arranged at the lower end of the excavator movable arm body. A supporting assembly is arranged at one end of the first installation base and comprises a first supporting column, an installation groove is formed in one end of the first supporting column, a spring is arranged in the first supporting column, a limiting block is arranged at one end of the spring, and a second supporting column is fixedly connected to the end, away from the spring, of the limiting block. The excavator movable arm body is supported through the supporting frame and the supporting block, downward pulling force borne by the excavator movable arm is dispersed, the overall rigidity is improved, then the spring is used for pushing the second supporting column to apply upward pushing force to the excavator movable arm, the downward pulling force borne by the excavator movable arm is reduced, and the fatigue resistance of the excavator movable arm is improved; the structure is simple and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a support and reinforcement control structure for an excavator boom. Background Art

[0002] The working device of the excavator is composed of a boom, an arm, a bucket, a cylinder and a group of connecting rod mechanisms. When working, the boom has to bear huge external loads, and different stresses and deformations will be generated according to different working conditions. Therefore, the performance of the boom structure will have a huge impact on the operating reliability and safety of the excavator. During the entire operation process of the energy-saving excavator, there will be many working conditions due to the changes in the three groups of cylinders. The most typical ones are three: maximum digging radius, deepest digging position and maximum lever arm position. The load size, force points and force degrees borne by the boom of the energy-saving excavator are different in different working conditions, and the locations of stress concentration and dangerous interfaces are also different.

[0003] Chinese patent document CN213625758U discloses a reinforcement structure of a new type of energy-saving hydraulic excavator boom, including a reinforcement structure body, the reinforcement structure body includes left and right side plates, upper and lower cover plates, boom cylinder support and reinforcement plates, the upper and lower cover plates include upper cover plates and lower cover plates, the upper cover plates and lower cover plates are respectively arranged at the upper and lower ends of the left and right side plates, and a reinforcement plate is welded on the lower cover plate. The left and right side plates and the upper and lower cover plates are an integrated frame-type closed structure, the left and right side plates and the upper and lower cover plates are an integrated frame-type closed structure, and the boom cylinder support is installed on the integrated frame-type closed structure composed of the left and right side plates and the upper and lower cover plates, and the reinforcement plates are provided with two groups, and the two groups of reinforcement plates are symmetrically distributed about the center line of the upper cover plate. The reinforcement structure of the new type of energy-saving hydraulic excavator boom mentioned above has shortcomings. Although the device realizes the reinforcement of the excavator boom structure, it has limitations. The setting only uses a single reinforcement plate to strengthen the support of the excavator boom, and still has low fatigue strength and insufficient overall rigidity, which cannot meet the use requirements of some special working conditions.

[0004] Therefore, in order to solve such problems, we propose a support reinforcement control structure for an excavator boom. Utility Model Content

[0005] The purpose of the utility model is to provide a support reinforcement control structure for an excavator boom, aiming to solve the problem of low fatigue strength and insufficient overall rigidity of the existing reinforcement structure of the excavator boom in the above-mentioned background technology because only a single reinforcement plate is used to strengthen the support of the excavator boom when in use.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a support and reinforcement control structure for an excavator boom, including an excavator boom body, a support frame is arranged inside the excavator boom body, and support blocks are fixedly connected to the side walls of the support frame, a first mounting seat is fixedly connected to the lower end of the excavator boom body, a support assembly is arranged at one end of the first mounting seat, the support assembly includes a first support column, a mounting groove is opened at one end of the first support column, a spring is arranged inside the first support column, a limiting block is arranged at one end of the spring, a second support column is fixedly connected to the end of the limiting block away from the spring, a second mounting seat is arranged at the end of the second support column away from the first support column, and the second mounting seat is fixedly connected to the excavator boom body.

[0007] Preferably, there are two groups of support components at one end of the first mounting base.

[0008] Preferably, the support frame is in a cross shape.

[0009] Preferably, the mounting groove is T-shaped.

[0010] Preferably, the limiting block and the second supporting column are slidably connected to the mounting groove.

[0011] Preferably, the support block is in the shape of a quadrangular prism, and a side wall of the support block is provided with an arc-shaped groove.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, a support frame and a support block are provided, and the support frame and the support block are used to support the excavator boom body, so as to disperse the downward pulling force on the excavator boom and increase the overall rigidity; secondly, a first support column, a mounting groove, a spring, a limit block and a second support column are provided, and the spring is used to push the second support column to apply an upward pushing force to the excavator boom, so as to reduce the downward pulling force on the excavator boom and increase the fatigue resistance of the excavator boom; and the structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional schematic diagram of a support and reinforcement control structure for an excavator boom proposed in the utility model Figure 1 ;

[0015] Figure 2 A three-dimensional schematic diagram of a support and reinforcement control structure for an excavator boom proposed in the utility model Figure 2 ;

[0016] Figure 3 It is a three-dimensional schematic diagram of a support frame in a support and reinforcement control structure for an excavator boom proposed by the utility model;

[0017] Figure 4The utility model discloses a three-dimensional exploded schematic diagram of a support assembly in a support reinforcement control structure for an excavator boom.

[0018] Legend:

[0019] 1. excavator boom body; 11. first mounting seat; 12. second mounting seat; 2. support frame; 21. support block; 3. support assembly; 31. first support column; 311. mounting groove; 32. spring; 33. limit block; 34. second support column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Reference Figure 1-4The utility model provides an embodiment: a support and reinforcement control structure for an excavator boom, including an excavator boom body 1, a support frame 2 is arranged inside the excavator boom body 1, and the side walls of the support frame 2 are fixedly connected with support blocks 21, a first mounting seat 11 is fixedly connected to the lower end of the excavator boom body 1, and a support assembly 3 is arranged at one end of the first mounting seat 11, and the support assembly 3 includes a first support column 31, a mounting groove 311 is opened at one end of the first support column 31, a spring 32 is arranged inside the first support column 31, a limiting block 33 is arranged at one end of the spring 32, and a second support column 34 is fixedly connected to the end of the limiting block 33 away from the spring 32, and a second mounting seat 12 is arranged at the end of the second support column 34 away from the first support column 31, and the second mounting seat 12 is fixedly connected to the excavator boom body 1.

[0023] This arrangement supports the excavator boom 1 by utilizing the support frame 2 and the support block 21, so that the excavator boom 1 is subjected to a downward pulling force, and then utilizes the elastic force of the spring 32 so that the spring 32 pushes the second support column 34, so that the second support column 34 applies an upward pushing force to the excavator boom 1, thereby avoiding breakage at the bending part of the excavator boom 1 and increasing the structural strength of the excavator boom 1.

[0024] There are two groups of support assemblies 3 at one end of the first mounting seat 11, which are used to increase the upward driving force applied by the boom body 1 of the excavator.

[0025] The support frame 2 is in the shape of a cross, and is used to simultaneously cooperate with the support block 21 to support the four inner side walls of the excavator boom body 1, thereby increasing the structural strength of the excavator boom body 1.

[0026] The mounting groove 311 is T-shaped and is used to limit the spring 32 to prevent the spring 32 from being separated from the first support column 31 , thereby increasing the stability of the support assembly 3 .

[0027] The limiting block 33 and the second supporting column 34 are slidably connected to the mounting groove 311 , so that the spring 32 pushes the second supporting column 34 to apply an upward pushing force to the excavator boom body 1 .

[0028] The support block 21 is in the shape of a quadrangular prism, and an arc-shaped groove is provided on the side wall of the support block 21 to increase the contact area, thereby increasing the supporting capacity, while reducing the weight of the support block 21 and reducing the production cost.

[0029] Working principle: First, the excavator boom 1 is supported by using the support frame 2 and the support block 21, and then the downward pulling force on the excavator boom 1 is dispersed, and then the elastic force of the spring 32 is used, and then the spring 32 inside the first support column 31 is used to push the second support column 34, and then the second support column 34 applies an upward pushing force to the excavator boom 1, thereby reducing the downward pulling force on the excavator boom 1, avoiding breakage at the bending part of the excavator boom 1, and increasing the structural strength of the excavator boom 1.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support and reinforcement control structure for an excavator boom, comprising an excavator boom body (1), characterized in that: The excavator boom (1) is provided with a support frame (2) inside, and the side walls of the support frame (2) are fixedly connected with support blocks (21), and the lower end of the excavator boom (1) is fixedly connected with a first mounting seat (11), and one end of the first mounting seat (11) is provided with a support assembly (3), and the support assembly (3) comprises a first support column (31), and one end of the first support column (31) is provided with a mounting groove (311), a spring (32) is provided inside the first support column (31), and one end of the spring (32) is provided with a limit block (33), and one end of the limit block (33) is fixedly connected with a second support column (34) at one end away from the spring (32), and the second support column (34) is provided with a second mounting seat (12) at one end away from the first support column (31), and the second mounting seat (12) is fixedly connected to the excavator boom (1).

2. The support and reinforcement control structure for an excavator boom according to claim 1, characterized in that: A total of two groups of support components (3) are provided at one end of the first mounting seat (11).

3. The support and reinforcement control structure for an excavator boom according to claim 1, characterized in that: The support frame (2) is in the shape of a cross.

4. The support and reinforcement control structure for an excavator boom according to claim 1, characterized in that: The mounting groove (311) is T-shaped.

5. The support and reinforcement control structure for an excavator boom according to claim 1, characterized in that: The limiting block (33) and the second supporting column (34) are slidably connected to the mounting groove (311).

6. The support and reinforcement control structure for an excavator boom according to claim 1, characterized in that: The support block (21) is in the shape of a quadrangular prism, and a side wall of the support block (21) is provided with an arc-shaped groove.

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