Counterweight support assembly of excavator

Abstract

The utility model relates to the field of excavator balance weight supports, and discloses an excavator balance weight support assembly which comprises a machine body, a supporting plate is fixedly connected to the front surface of the machine body, a positioning assembly is arranged in the supporting plate, a buffering assembly is arranged on the upper surface of the supporting plate, and the positioning assembly comprises an electric telescopic rod. An output shaft of the electric telescopic rod is fixedly connected with a positioning plate, a positioning groove is formed in the upper surface of the positioning plate, the left surface of the supporting plate penetrates through and is slidably connected with a sliding plate, and the left surface of the sliding plate is fixedly connected with a guide plate. According to the utility model, through the cooperation of the positioning assembly, when the counter weight reaches a proper height and position, the electric telescopic rod is started, the guide plates on the two sides clamp and straighten the counter weight, and the counter weight is aligned with the mounting position of the supporting plate in the front-back direction, so that a worker only needs to hold the counter weight and adjust the counter weight in the front-back direction, alignment can be realized, the counter weight can be conveniently mounted, the time cost is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of excavator counterweight brackets, in particular to an excavator counterweight bracket assembly. Background Art

[0002] In many fields, such as modern engineering construction and resource extraction, excavators, as key heavy machinery, undertake numerous arduous and complex tasks. Their operations involve frequent digging, lifting, swinging, and unloading, placing extremely stringent demands on the stability of the entire machine. The counterweight support assembly, typically installed at the rear of the excavator, plays an indispensable role in maintaining the excavator's balance and stability.

[0003] When installing traditional counterweights, an overhead crane is often used for lifting operations. Specifically, the counterweight is lifted by the overhead crane to the area above the counterweight bracket at the rear of the excavator. After alignment, the counterweight is lowered for installation.

[0004] However, when using this method to install the counterweight, there are the following problems:

[0005] First, the position of the counterweight in the air cannot remain stable. When in the air, the counterweight is prone to shifting and shaking. It is troublesome to align the installation position, which takes a lot of time and is inefficient. Secondly, the counterweight is heavy. When the overhead crane lowers the counterweight, the counterweight is prone to collide with the counterweight bracket, which can easily cause damage and bumps to the device. Utility Model Content

[0006] In order to make up for the above shortcomings, the utility model provides an excavator counterweight bracket assembly, which aims to improve the problems in the prior art that the position of the counterweight in the air cannot be kept stable, is easy to deflect, and the installation takes a lot of time and is inefficient.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an excavator counterweight support assembly, comprising a body, a support plate fixedly connected to the front surface of the body, a positioning assembly provided inside the support plate, a buffer assembly provided on the upper surface of the support plate, the positioning assembly comprising an electric telescopic rod, the output shaft of the electric telescopic rod fixedly connected to the positioning plate, a positioning groove provided on the upper surface of the positioning plate, a slide plate passing through and slidably connected to the left surface of the support plate, a guide plate fixedly connected to the left surface of the slide plate, and a positioning rod fixedly connected to the right end of the lower surface of the slide plate.

[0008] As a further description of the above technical solution:

[0009] The buffer assembly includes a slider, the upper surface of the slider is fixedly connected to a top block, the lower surface of the slider is fixedly connected to a sealing gasket, the upper surface of the sealing gasket is provided with a circular hole, the lower surface of the sealing gasket is fixedly connected to one end of a compression spring, and the inner wall of the support plate is provided with a cavity.

[0010] As a further description of the above technical solution:

[0011] The electric telescopic rod is arranged on the front surface of the support plate, the positioning plate is slidably connected to the inner wall of the support plate, and the positioning groove is arranged in an inclined shape.

[0012] As a further description of the above technical solution:

[0013] The positioning rod is configured to be columnar, and the positioning rod slides on the inner wall of the positioning groove, and the outer wall of the positioning rod fits the inner wall of the positioning groove.

[0014] As a further description of the above technical solution:

[0015] The positioning rods, slides, and guide plates are provided in two groups, and the positioning grooves are provided in two groups. The two groups of positioning rods, slides, guide plates, and positioning grooves are symmetrically distributed about the center line of the support plate.

[0016] As a further description of the above technical solution:

[0017] The sealing gasket piston is connected to the inner wall of the cavity, and the cavity is composed of two groups of cylindrical grooves.

[0018] As a further description of the above technical solution:

[0019] The sliding block penetrates and is slidably connected to the upper surface of the support plate, and the top block is plugged into the upper surface of the support plate.

[0020] As a further description of the above technical solution:

[0021] One end of the compression spring is fixedly connected to the inner wall of the bottom end of the cavity.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, through the cooperation of the positioning components, when the counterweight reaches the appropriate height and position, the electric telescopic rod is started to clamp the counterweight and straighten it with the guide plates on both sides so that it is aligned with the support plate installation position front and back. The staff only needs to hold the counterweight and adjust it front and back to align it, which facilitates the installation of the counterweight, reduces time and improves efficiency.

[0024] 2. In the utility model, through the cooperation of the buffer assembly, when the overhead crane lowers the counterweight, it can provide effective buffering for the counterweight, avoid collision, reduce the probability of damage to the device, and ensure the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic front view of the three-dimensional structure of the overall device of the present invention;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the body, support plate and slide plate in the present invention;

[0027] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the support plate in the present invention.

[0028] Legend:

[0029] 1. Body; 2. Support plate; 31. Electric telescopic rod; 32. Positioning plate; 33. Slide plate; 34. Positioning rod; 35. Guide plate; 301. Positioning groove; 41. Top block; 42. Slider; 43. Sealing gasket; 44. Compression spring; 401. Round hole; 402. Cavity. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1 - Figure 2 The utility model provides an embodiment: an excavator counterweight bracket assembly, including a body 1, the body 1 is the excavator body, which is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The front surface of the body 1 is fixedly connected to a support plate 2, the support plate 2 is a counterweight bracket, the counterweight is installed on the support plate 2, and a mounting hole is opened on the support plate 2, which corresponds to the mounting hole on the counterweight, so as to facilitate the fixation of the counterweight. A positioning component is provided inside the support plate 2, which facilitates the positioning of the counterweight during installation. A buffer component is provided on the upper surface of the support plate 2, which can provide buffering for the counterweight when the counterweight is installed to avoid collision.

[0032] Reference Figure 1 - Figure 2The positioning component includes an electric telescopic rod 31. The electric telescopic rod 31 is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The output shaft of the electric telescopic rod 31 is fixedly connected to the positioning plate 32. Starting the electric telescopic rod 31 can drive the positioning plate 32 to move in the front and rear directions. A positioning groove 301 is provided on the upper surface of the positioning plate 32. A slide plate 33 is penetrated and slidably connected to the left surface of the support plate 2. A guide plate 35 is fixedly connected to the left surface of the slide plate 33. The slide plate 33 and the guide plate 35 slide horizontally, and the two will move synchronously. The right end of the lower surface of the slide plate 33 is fixedly connected to the positioning rod 34. When the positioning rod 34 moves, it will drive the slide plate 33 to move synchronously.

[0033] Reference Figure 1 - Figure 3 The buffer assembly includes a slider 42, the upper surface of the slider 42 is fixedly connected to the top block 41, the lower surface of the slider 42 is fixedly connected to the sealing gasket 43, the surface of the sealing gasket 43 is made of rubber material, the upper surface of the sealing gasket 43 is provided with a circular hole 401, the aperture of the circular hole 401 is small, which will limit the flow rate of the fluid, the lower surface of the sealing gasket 43 is fixedly connected to one end of the compression spring 44, and the inner wall of the support plate 2 is provided with a cavity 402.

[0034] Reference Figure 1 - Figure 2 The electric telescopic rod 31 is arranged on the front surface of the support plate 2, and the support plate 2 provides support for the electric telescopic rod 31. The output shaft of the electric telescopic rod 31 passes through the front surface of the support plate 2. The positioning plate 32 is slidably connected to the inner wall of the support plate 2 and slides in the front and back directions. The positioning groove 301 is opened in an inclined shape, with the left end at the rear and the right end at the front. The positioning rod 34 is set to a columnar shape. The positioning rod 34 slides on the inner wall of the positioning groove 301. The outer wall of the positioning rod 34 fits the inner wall of the positioning groove 301. When the positioning plate 32 moves, it will drive the positioning groove 301 to move. When the positioning groove 301 moves, it will squeeze the positioning rod 34, and then drive the positioning rod 34 to move horizontally. There are two groups of positioning rods 34, slides 33, and guide plates 35, and two groups of positioning grooves 301 are opened. The two groups of positioning rods 34, slides 33, guide plates 35, and positioning grooves 301 are symmetrically distributed on the left and right sides with respect to the center line of the support plate 2. The guide plates 35 on both sides will move together or open synchronously. When the guide plates 35 on both sides move together to the closest point, the counterweight will contact the surface of the guide plate 35, but it is not in a tightly clamped state, and the counterweight can still be pushed.

[0035] Reference Figure 1 - Figure 3The sealing gasket 43 is connected to the inner wall of the cavity 402 and can keep sealing. The cavity 402 is filled with hydraulic oil, and the hydraulic oil can pass through the round hole 401, but the flow rate is limited due to the small diameter of the round hole 401. The cavity 402 is composed of two groups of cylindrical grooves. The diameter of the upper cylindrical groove is smaller, and the sealing gasket 43 is located in the lower cylindrical groove with a larger diameter. The sliding block 42 penetrates and is slidingly connected to the upper surface of the support plate 2 and slides longitudally. The top block 41 is inserted into the upper surface of the support plate 2, and the upper surface of the top block 41 is flush with the upper surface of the support plate 2 after the insertion is completed. One end of the compression spring 44 is fixedly connected to the inner wall at the bottom end of the cavity 402. When the sealing gasket 43 moves downward, the compression spring 44 is compressed to generate a reaction force.

[0036] Working principle: When the device is used, first, the machine body 1 is stopped at a specified position, then the counterweight is lifted by the row of cranes and moved between the two guide plates 35, and then the positioning plate 32 is moved backward by starting the electric telescopic rod 31. The positioning plate 32 moving backward will drive the positioning groove 301 to move backward, which will press the positioning rod 34. The positioning rods 34 on both sides will move towards the middle of the support plate 2 and will drive the sliding plate 33 and the guide plate 35 to move synchronously. The guide plates 35 on both sides will clamp and position the counterweight, which can align the mounting points on the counterweight with the mounting points on the support plate 2.

[0037] Then the staff pushes the counterweight backward to align the mounting points on the counterweight with the mounting points on the support plate 2. After the mounting points are aligned, the row of cranes can lower the counterweight. When the counterweight moves downward, it will press the top block 41, which will in turn drive the sliding block 42 and the sealing gasket 43 to move downward. The sealing gasket 43 moving downward will press the hydraulic oil in the cavity 402 and will press the compression spring 44 to generate a reaction force. When the hydraulic oil is pressed, it will pass through the round hole 401, but the flow rate will be limited due to the small diameter of the round hole 401, which can provide a buffering effect and effectively prevent the counterweight from colliding with the support plate 2. When the top block 41 and the support plate 2 are inserted, the counterweight will contact the upper surface of the support plate 2. At this time, the counterweight can be fixed using bolts to complete the installation. After the counterweight is removed, the reaction force of the compression spring 44 will push the top block 41, the sliding block 42 and the sealing gasket 43 upward, and they will reset.

[0038] 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An excavator counterweight support assembly, comprising a body (1), characterized in that: The front surface of the machine body (1) is fixedly connected to a support plate (2), a positioning assembly is provided inside the support plate (2), a buffer assembly is provided on the upper surface of the support plate (2), the positioning assembly comprises an electric telescopic rod (31), the output shaft of the electric telescopic rod (31) is fixedly connected to a positioning plate (32), a positioning groove (301) is provided on the upper surface of the positioning plate (32), a slide plate (33) is passed through and slidably connected to the left surface of the support plate (2), a guide plate (35) is fixedly connected to the left surface of the slide plate (33), and a positioning rod (34) is fixedly connected to the right end of the lower surface of the slide plate (33).

2. The excavator counterweight support assembly according to claim 1, characterized in that: The buffer assembly includes a slider (42), the upper surface of the slider (42) is fixedly connected to a top block (41), the lower surface of the slider (42) is fixedly connected to a sealing gasket (43), the upper surface of the sealing gasket (43) is provided with a circular hole (401), the lower surface of the sealing gasket (43) is fixedly connected to one end of a compression spring (44), and the inner wall of the support plate (2) is provided with a cavity (402).

3. The excavator counterweight support assembly according to claim 1, characterized in that: The electric telescopic rod (31) is arranged on the front surface of the support plate (2), the positioning plate (32) is slidably connected to the inner wall of the support plate (2), and the positioning groove (301) is opened in an inclined shape.

4. The excavator counterweight support assembly according to claim 1, characterized in that: The positioning rod (34) is configured to be cylindrical, and the positioning rod (34) slides on the inner wall of the positioning groove (301), and the outer wall of the positioning rod (34) fits the inner wall of the positioning groove (301).

5. The excavator counterweight support assembly according to claim 1, characterized in that: The positioning rods (34), slides (33), and guide plates (35) are provided in two groups, and the positioning grooves (301) are provided in two groups. The two groups of positioning rods (34), slides (33), guide plates (35), and positioning grooves (301) are symmetrically distributed with respect to the center line of the support plate (2).

6. The excavator counterweight support assembly according to claim 2, characterized in that: The sealing gasket (43) piston is connected to the inner wall of the cavity (402), and the cavity (402) is composed of two groups of cylindrical grooves.

7. The excavator counterweight support assembly according to claim 2, characterized in that: The sliding block (42) penetrates and is slidably connected to the upper surface of the support plate (2), and the top block (41) is inserted into the upper surface of the support plate (2).

8. The excavator counterweight support assembly according to claim 2, characterized in that: One end of the compression spring (44) is fixedly connected to the inner wall of the bottom end of the cavity (402).

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