Counterweight structure of excavator

Abstract

The utility model provides a counter weight structure of an excavator. The counter weight structure of the excavator comprises a box body, a first cover body, a second cover body and a liquid guide mechanism. The interior of the box body is divided into the first cavity and the second cavity through the partition plate, the balancing weight is installed in the first cavity, and the balancing weight is fixed in the first cavity, so that the box body keeps a certain basic weight. Counterweight liquid is contained in the second cavity, and the weight of the box body is increased through the counterweight liquid and the counterweight block. A liquid guide mechanism is further installed on the box body and used for adding balance weight liquid into the second cavity or pumping out the balance weight liquid in the second cavity. When the excavator works on a slope, the content of the counterweight liquid in the second cavity can be adjusted by adopting the liquid guide mechanism according to the site construction working condition, and the effect of flexible regulation and control can be achieved. The structure is simple, using is convenient, the overall weight of the box body can be flexibly adjusted, and therefore the requirement for safe operation of the excavator under different working conditions is met.

Description

A counterweight structure for excavators Technical Field

[0001] This utility model belongs to the field of excavator technology, specifically relating to an excavator counterweight structure. Background Technology

[0002] To ensure the normal operation of excavators, a counterweight is usually installed at the rear of the excavator to maintain front-to-back balance during operation. Currently, most existing counterweights are external shells filled with cement blocks, ore, or metal materials to increase overall weight. However, excavators operate in diverse environments. For example, when climbing slopes or operating on steep inclines, a fully loaded bucket, when lifted to a higher position, can shift the center of gravity to the rear of the excavator, increasing the risk of tipping over. Conversely, when working downhill, with the bucket extended to its maximum extent, the center of gravity shifts forward, making forward tipping more likely. Furthermore, most current excavator counterweights are fixed, making it inconvenient to adjust the weight according to usage conditions, thus affecting the excavator's performance in challenging environments. Summary of the Invention

[0003] This utility model provides a counterweight structure for excavators, which aims to solve the problem in the prior art where the weight of the counterweight is not easy to adjust, thus affecting the flexibility of excavators during use.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an excavator counterweight structure, comprising:

[0005] The box includes a first cavity and a second cavity, wherein the first cavity contains a counterweight and the second cavity is used to contain counterweight liquid.

[0006] The first cover is installed on the box and covers the opening of the first cavity;

[0007] The second cover is installed on the box and covers the opening of the second cavity;

[0008] A liquid guiding mechanism, installed on the housing, is used to fill the second cavity with counterweight liquid or to discharge the counterweight liquid inside the second cavity.

[0009] In one possible implementation, the liquid guiding mechanism includes:

[0010] The inlet pipe has one end located inside the second cavity and the other end located outside the second cavity;

[0011] The liquid outlet tube has one end located inside the second cavity and the other end located outside the second cavity.

[0012] In one possible implementation, the liquid guiding mechanism further includes:

[0013] An infusion pump is installed between the inlet pipe and the outlet pipe. Two control valves are provided on both the inlet pipe and the outlet pipe. The inlet end of the infusion pump is connected to the outlet pipe and is located between the two control valves on the outlet pipe. The inlet end of the infusion pump is connected to the inlet pipe and is located between the two control valves on the two inlet pipes.

[0014] In one possible implementation, a vent pipe is also installed on the housing or the second cover, the vent pipe being used to connect the second cavity to the outside.

[0015] In one possible implementation, the first cover is fixedly mounted on the housing, the second cover is detachably mounted on the housing, and the inlet pipe and the outlet pipe are mounted on the second cover.

[0016] In one possible implementation, there are two first cavities, with the two first cavities located on opposite sides of the second cavity.

[0017] In one possible implementation, the top of the vent pipe is bent to prevent external impurities from entering the second cavity.

[0018] In one possible implementation, the infusion pump is equipped with switching valves at both the inlet and outlet ends for controlling the flow state.

[0019] The solution shown in this application, compared with the prior art, includes a counterweight structure comprising a box body. The box body is internally divided into a first cavity and a second cavity by a partition. A counterweight block is installed inside the first cavity and fixed within it, thus maintaining a certain basic weight for the box body. The second cavity contains counterweight fluid, which, along with the counterweight block, increases the weight of the box body. A fluid guiding mechanism is also installed on the box body, used to add or remove counterweight fluid from the second cavity. When the excavator is operating on a slope, the fluid guiding mechanism can be used to adjust the content of the counterweight fluid in the second cavity according to the on-site construction conditions, enabling flexible control. The structure is simple and easy to use, allowing for flexible adjustment of the overall weight of the box body, thereby meeting the needs of excavator safe operation under different working conditions. Attached Figure Description

[0020] Figure 1 is a structural schematic diagram of the excavator counterweight structure provided in an embodiment of the present utility model;

[0021] Figure 2 is a schematic diagram of the installation structure of the liquid guiding mechanism provided in the embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Box body; 11. First cavity; 111. Counterweight; 12. Second cavity; 2. First cover; 3. Second cover; 4. Liquid guiding mechanism; 41. Inlet pipe; 42. Outlet pipe; 43. Infusion pump; 44. Control valve; 45. Vent pipe; 451. Elbow. Detailed Implementation

[0024] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Please refer to Figures 1 and 2 together. The excavator counterweight structure provided by this utility model will now be described. The excavator counterweight structure includes a housing 1, a first cover 2, a second cover 3, and a fluid guiding mechanism 4. The housing 1 includes a first cavity 11 and a second cavity 12. The first cavity 11 contains a counterweight block 111, and the second cavity 12 is used to hold counterweight fluid. The first cover 2 is installed on the housing 1 and covers the opening of the first cavity 11. The second cover 3 is installed on the housing 1 and covers the opening of the second cavity 12. The fluid guiding mechanism 4 is installed on the housing 1 and is used to fill the second cavity 12 with counterweight fluid or to discharge the counterweight fluid inside the second cavity 12.

[0026] The excavator counterweight structure provided in this embodiment, compared with the prior art, includes a housing 1. The housing 1 is internally divided into a first cavity 11 and a second cavity 12 by a partition. A counterweight block 111 is installed inside the first cavity 11 and fixed inside, thus maintaining a certain basic weight for the housing 1. The second cavity 12 contains counterweight fluid, which, along with the counterweight block 111, increases the weight of the housing 1. A fluid guiding mechanism is also installed on the housing 1, used to add or remove counterweight fluid from the second cavity 12. When the excavator is operating on a slope, the fluid guiding mechanism 4 can be used to adjust the content of the counterweight fluid in the second cavity 12 according to the on-site construction conditions, enabling flexible control. The structure is simple and easy to use, allowing for flexible adjustment of the overall weight of the housing 1, thereby meeting the needs of safe operation of the excavator under different working conditions.

[0027] In some embodiments, the liquid guiding mechanism 4 can adopt the structure shown in Figures 1 and 2. Referring to Figures 1 and 2 together, the liquid guiding mechanism 4 includes an inlet pipe 41 and an outlet pipe 42. One end of the inlet pipe 41 is located inside the second cavity 12, and the other end is located outside the second cavity 12; one end of the outlet pipe 42 is located inside the second cavity 12, and the other end is located outside the second cavity 12. The inlet pipe 41 and the outlet pipe 42 are arranged vertically on the housing 1, and the bottom ends of the inlet pipe 41 and the outlet pipe 42 are respectively located at the bottom of the second cavity 12. The inlet pipe 41 is used to add the counterweight liquid into the second cavity 12, and the outlet pipe 42 is used to extract the counterweight liquid from the second cavity 12. The top ends of the inlet pipe 41 and the outlet pipe 42 extend beyond the top of the housing 1, thereby facilitating the operator to add counterweight liquid into the second cavity 12 or extract counterweight liquid from the second cavity 12.

[0028] In some embodiments, the liquid guiding mechanism 4 can adopt the structure shown in Figures 1 and 2. Referring also to Figures 1 and 2, the liquid guiding mechanism 4 further includes an infusion pump 43. The infusion pump 43 is installed between the inlet pipe 41 and the outlet pipe 42. Both the inlet pipe 41 and the outlet pipe 42 are provided with two control valves 44. The inlet end of the infusion pump 43 is connected to the outlet pipe 42 and located between the two control valves 44 on the outlet pipe 42. The inlet end of the infusion pump 43 is connected to the inlet pipe 41 and located between the two control valves 44 on the two inlet pipes 41. Two control valves 44 are installed at the top ends of both the inlet pipe 41 and the outlet pipe 42. The control valves 44 are used to control the flow state of the inlet pipe 41 and the outlet pipe 42. Control valves 44 on the inlet pipe 41 and outlet pipe 42 are arranged vertically at intervals. The inlet end of the infusion pump 43 is connected to the outlet pipe 42, and the outlet end of the infusion pump 43 is connected to the inlet pipe 41, with the connection points located between the two control valves 44. When it is necessary to add counterweight liquid to the second chamber 12, the valve above the inlet pipe 41 needs to be closed, and the valve below the inlet pipe 41 needs to be opened. At the same time, the valve below the outlet pipe 42 needs to be closed, and the valve above the outlet pipe 42 needs to be opened. The infusion pump 43 can then be started to complete the liquid extraction operation. When it is necessary to add counterweight liquid into the second chamber 12, the valve above the inlet pipe 41 needs to be closed, the valve below the inlet pipe 41 needs to be opened, the valve below the outlet pipe 42 needs to be closed, and the valve above the outlet pipe 42 needs to be opened. The infusion pump 43 can then be started to deliver the external counterweight liquid into the second chamber 12. In this application, by setting up control valve 44 with inlet pipe 41 and outlet pipe 42, the operation of infusion pump 43 for discharging or adding liquid can be switched by controlling the state of control valve 44.

[0029] In some embodiments, the aforementioned housing 1 can adopt the structure shown in Figures 1 and 2. Referring also to Figures 1 and 2, a vent pipe 45 is also installed on the housing 1 or the second cover 3, which is used to connect the second cavity 12 to the outside. When the second cover 3 is placed over the opening of the second cavity 12, the second cover 3 and the housing 1 are sealed together to prevent the counterweight liquid from overflowing. By installing the vent pipe 45 on the second cover 3, the pressure inside the second cavity 12 can be maintained by filling or draining the counterweight liquid into or from the second cavity 12.

[0030] Specifically, in this embodiment, a sealing ring is installed on the second cover 3, and the sealing connection between the second cover and the box 1 is achieved by the sealing ring abutting against the side wall at the top of the second cavity 12.

[0031] In some embodiments, the first cover 2 and the second cover 3 can adopt the structures shown in Figures 1 and 2. Referring to Figures 1 and 2, the first cover 2 is fixedly installed on the housing 1, and the second cover 3 is detachably installed on the housing 1. The inlet pipe 41 and the outlet pipe 42 are installed on the second cover 3. The first cover 2 is fixedly installed on the housing 1 by welding, which improves the stability of the first cover 2 on the housing 1. At the same time, the second cover 3 is fixedly installed on the housing 1 by bolts. By removing the second cover 3, the inlet pipe 41, the outlet pipe 42, and the infusion pump 43 can be simultaneously removed from the housing 1, which facilitates the later maintenance of the inlet pipe 41, the outlet pipe 42, and the infusion pump 43.

[0032] Specifically, in this embodiment, the infusion pump 43 is fixedly installed on the second cover 3.

[0033] In some embodiments, the aforementioned housing 1 can adopt the structure shown in Figures 1 and 2. Referring to Figures 1 and 2 together, there are two first cavities 11, which are located on opposite sides of the second cavity 12. Along the length of the housing 1, two partitions are fixedly installed inside the housing 1, dividing the interior of the housing 1 into two first cavities 11 and one second cavity 12. Along the length of the housing 1, the second cavity 12 is located in the middle of the housing 1, and the two first cavities 11 are located at both ends of the housing 1. Furthermore, the counterweights 111 inside the two first cavities 11 have the same weight. The second cavity 12, located in the middle of the two first cavities 11, ensures the weight balance of the entire housing 1, preventing the excavator from tilting due to uneven weight distribution at both ends of the housing 1. Additionally, adding or removing counterweight fluid into the second cavity 12 does not affect the weight balance at both ends of the housing 1.

[0034] In some embodiments, the vent pipe 45 can adopt the structure shown in Figures 1 and 2. Referring also to Figures 1 and 2, the top of the vent pipe 45 is bent to prevent external impurities from entering the second cavity 12. Installing the elbow 451 at the top of the vent pipe 45 can prevent external impurities from falling into the second cavity 12 during construction, thus preventing impurities from entering the infusion pump 43 and damaging it later.

[0035] In some embodiments, the aforementioned infusion pump 43 can adopt the structure shown in Figures 1 and 2. Referring to Figures 1 and 2, the infusion pump 43 is equipped with switching valves at its inlet and outlet ends for controlling the flow state. Both the inlet and outlet ends of the infusion pump 43 are equipped with switching valves. When the infusion pump 43 needs to be used, both switching valves can be opened; when the infusion pump 43 is not needed, the switching valves can be closed. Simultaneously, the inlet pipe 41 and outlet pipe 42 can be connected to an external infusion pump 43. This allows connection to a water spraying device, enabling the use of the counterweight fluid inside the second chamber 12 for dust suppression. Alternatively, the inlet pipe 41 and outlet pipe 42 can be connected to a heat exchanger in the main machine section, allowing for cooling of the excavator's internal components. Simultaneously, the weight of the liquid inside the second chamber 12 is maintained during the counterweight fluid circulation process. This allows the counterweight fluid inside the second chamber 12 to achieve multiple uses.

[0036] Optionally, in this embodiment, the counterweight liquid is water, coolant, or dust suppressant.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A counterweight structure for an excavator, characterized in that, include: The box (1) includes a first cavity (11) and a second cavity (12). The first cavity (11) contains a counterweight (111), and the second cavity (12) is used to hold the counterweight liquid. A first cover (2) is installed on the box (1) and covers the opening of the first cavity (11). A second cover (3) is installed on the box (1) and covers the opening of the second cavity (12). A liquid guiding mechanism (4) is installed on the box (1) and is used to fill the second cavity (12) with counterweight liquid or to discharge the counterweight liquid inside the second cavity (12).

2. The excavator counterweight structure as described in claim 1, characterized in that, The liquid guiding mechanism (4) includes: an inlet pipe (41), one end of which is located inside the second cavity (12) and the other end of which is located outside the second cavity (12); and an outlet pipe (42), one end of which is located inside the second cavity (12) and the other end of which is located outside the second cavity (12).

3. The excavator counterweight structure as described in claim 2, characterized in that, The liquid guiding mechanism (4) further includes: an infusion pump (43) installed between the inlet pipe (41) and the outlet pipe (42). Both the inlet pipe (41) and the outlet pipe (42) are provided with two control valves (44). The inlet end of the infusion pump (43) is connected to the outlet pipe (42) and located between the two control valves (44) on the outlet pipe (42). The inlet end of the infusion pump (43) is connected to the inlet pipe (41) and located between the two control valves (44) on the two inlet pipes (41).

4. The excavator counterweight structure as described in claim 1, characterized in that, A vent pipe (45) is also installed on the box (1) or the second cover (3), and the vent pipe (45) is used to connect the second cavity (12) with the outside.

5. The excavator counterweight structure as described in claim 2, characterized in that, The first cover (2) is fixedly installed on the box (1), the second cover (3) is detachably installed on the box (1), and the liquid inlet pipe (41) and the liquid outlet pipe (42) are installed on the second cover (3).

6. The excavator counterweight structure as described in claim 1, characterized in that, There are two first cavities (11), and the two first cavities (11) are located on opposite sides of the second cavity (12).

7. The excavator counterweight structure as described in claim 4, characterized in that, The top of the vent pipe (45) is bent and has an elbow (451) to prevent external impurities from entering the second cavity (12).

8. The excavator counterweight structure as described in claim 3, characterized in that, The infusion pump (43) is equipped with switching valves at its inlet and outlet ends for controlling the flow status.

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