Counterweight block for excavator

Abstract

The present invention provides a counterweight block for an excavator, the counterweight block comprising a base (3), a front plate (4) and a rear plate (2) being fixed on the top of the base (3), the two sides of the front plate (4) being fixedly connected to the rear plate (2), and a top cover (1) being fixed on the top of the front plate (4) and the rear plate (2); by arranging a plurality of weighing sensors at the bottom of each filling portion, a controller can compare the real-time detection results of the weighing sensors with a preset counterweight target, and judge whether the real-time counterweight of the counterweight block meets the preset requirements according to the comparison results in the test stage, so as to provide a reference basis for subsequent counterweight adjustment, thereby ensuring that the counterweight material is evenly distributed in the internal filling cavity of the counterweight block, and further ensuring the overall counterweight accuracy and stability of the counterweight block.

Description

Technical Field

[0001] The invention relates to the technical field of counterweights for excavators, and in particular to a counterweight block for excavators. Background Art

[0002] An excavator is a heavy-duty excavating machine that uses a bucket to dig materials and load them into transport vehicles or stockpiles. The lower its center of gravity, the better its stability and safety. However, due to the uncertainty of the quality of materials excavated by the bucket and the diversity of its motion trajectories, it is necessary to set a counterweight on the excavator to ensure the overall quality stability of the excavator during different working processes.

[0003] The counterweight block of the excavator in the prior art is often filled with counterweight materials in the internal filling cavity of the counterweight block according to the actual counterweight requirements, so as to meet the overall counterweight requirements. However, it still has the following defects and shortcomings in actual use:

[0004] 1) Due to the uneven distribution of the counterweight material in the internal filling cavity of the counterweight block, the overall center of mass of the counterweight block after the counterweight material is filled may deviate, thereby affecting the overall counterweight accuracy and stability of the counterweight block.

[0005] 2) The working environment of the excavator is complex, often located on uneven roads such as steep slopes, and the working processes are diverse (including walking conditions and bucket conditions, etc.). The above working processes may cause the center of mass of the counterweight block to change, thereby affecting the overall quality stability of the excavator.

[0006] 3) In order to ensure the strength of the internal filling cavity of the counterweight block and the positioning and installation of the counterweight block, it is often necessary to set corresponding reinforcement members and positioning members on the counterweight block. The reinforcement members and positioning members will occupy the internal filling cavity space to a certain extent, thereby reducing the counterweight filling space.

[0007] 4) The internal filling cavity of the existing counterweight block is often set as a fixed filling structure, and the filling adjustment range is limited.

[0008] Therefore, there is an urgent need to provide a counterweight block for an excavator to solve the defects and shortcomings in the above-mentioned prior art. Summary of the invention

[0009] In order to solve the defects and shortcomings in the prior art, the present invention provides a counterweight block for an excavator.

[0010] The specific scheme provided by the present invention is:

[0011] A counterweight block for an excavator, the counterweight block comprising a base, a front plate and a rear plate are respectively fixed on the top of the base, both sides of the front plate are fixedly connected to the rear plate, and a top cover is also fixed on the top of the front plate and the rear plate; the characteristics are:

[0012] A filling space is formed inside the shell surrounded by the base, the top cover, the front plate and the rear plate, and the filling space includes an upper middle filling portion and a lower middle filling portion located in the middle of the counterweight block, and a left filling portion and a right filling portion located on both sides of the counterweight block; wherein the upper middle filling portion is located on the top of the lower middle filling portion, and the left filling portion and the right filling portion are symmetrically distributed on both sides of the upper middle filling portion and the lower middle filling portion;

[0013] A plurality of weighing sensors are arranged at the bottom of the middle and upper filling part, the middle and lower filling part, the left filling part and the right filling part. The weighing sensors are connected to the controller signal arranged on the top of the counterweight block. An alarm device connected to the controller signal is integrated inside the controller, and the controller is connected to the excavator control room signal.

[0014] As a further preferred embodiment of the present invention, ears are fixedly installed on both sides of the top of the top cover, and a cable installation part and a controller installation part are respectively arranged on the top of the top cover and between the ears on both sides.

[0015] As a further preferred embodiment of the present invention, a positioning portion is provided at a connection position between the front side of the base and the bottom of the front plate, and a positioning step is provided inside the positioning portion.

[0016] As a further preferred embodiment of the present invention, the front plate includes a front middle plate and a front left plate and a front right plate located on both sides of the front middle plate, and partitions are respectively provided between the front middle plate and the front left plate, and between the front middle plate and the front right plate.

[0017] As a further preferred embodiment of the present invention, the filling space of the middle-upper filling part is smaller than the filling space of the middle-lower filling part, and a plurality of supporting components are arranged inside the middle-lower filling part.

[0018] As a further preferred embodiment of the present invention, the support assembly includes a support plate fixed inside the counterweight block, a rear support tube is fixed on the rear side of the support plate, and a front support tube is fixed on the front side of the support plate. Both the rear support tube and the front support tube are hollow tubes and the hollow hole diameter of the rear support tube is larger than the hollow hole diameter of the front support tube. The external fixing part passes through the rear support tube and the front support tube in sequence and is fixedly connected to the excavator.

[0019] As a further preferred embodiment of the present invention, a plurality of support tube reinforcing ribs are evenly distributed on the outer edge of the end of the front support tube.

[0020] As a further preferred embodiment of the present invention, positioning plates are provided on the front plate at positions corresponding to the plurality of support components, and positioning holes communicating with the interior of the front support tube are provided inside the positioning plate.

[0021] As a further preferred embodiment of the present invention, front reinforcing ribs are provided on the front sides of the left filling part and the right filling part, and rear reinforcing ribs are provided on the rear sides of the left filling part and the right filling part.

[0022] As a further preferred embodiment of the present invention, the internal filling space of the middle upper filling part and the middle lower filling part is set as a fixed filling structure, the internal filling space of the left filling part and the right filling part is set as a loading and unloading filling structure, and the internal filling space of the left filling part and the right filling part is also provided with an auxiliary positioning part.

[0023] Compared with the prior art, the present invention can achieve the following technical effects:

[0024] 1) The present invention provides a counterweight block for an excavator. By arranging a plurality of weighing sensors at the bottom of each filling part, a controller can compare the real-time detection result of the weighing sensor with the preset counterweight target, and judge whether the real-time counterweight of the counterweight block meets the preset requirements according to the comparison result in the test phase, so as to provide a reference basis for the subsequent counterweight adjustment, thereby ensuring that the counterweight material is evenly distributed in the internal filling cavity of the counterweight block, and further ensuring the overall counterweight accuracy and stability of the counterweight block.

[0025] 2) The present invention provides a counterweight block for an excavator. The controller can determine whether the real-time counterweight of the counterweight block meets the preset requirements according to the real-time detection results of the weighing sensor at the corresponding position, so that when the counterweight block is actually used, the excavator can be operated to maintain the current working condition, alarm or shut down according to the comparison results, thereby ensuring the overall counterweight quality stability of the counterweight block during the actual working process of the excavator and ensuring the safe and stable operation of the excavator.

[0026] 3) The present invention provides a counterweight block for an excavator, in which a reinforcing member and a positioning member are arranged as an integrated structure with inner and outer nesting in the internal filling portion of the counterweight block, thereby reducing the occupation of the internal filling cavity space while ensuring the reinforcing and positioning effects.

[0027] 4) The present invention provides a counterweight block for an excavator, which facilitates placing fixed counterweight materials therein by setting the internal filling spaces of the left filling part and the right filling part as a loading and unloading filling structure, so as to divide the internal filling spaces of the left filling part and the right filling part as needed, so as to meet different counterweight adjustment requirements, increase the counterweight adjustment requirements, and improve the applicable scope of the counterweight adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The figure shows a structural stereogram of a counterweight block for an excavator provided by the present invention from a front side perspective.

[0029] Figure 2 The figure shows a structural stereogram of a counterweight block for an excavator provided by the present invention from a rear side perspective.

[0030] Figure 3 The figure shows a top view of the structure of a counterweight block for an excavator provided by the present invention.

[0031] Figure 4 The figure shows a bottom view of the structure of a counterweight block for an excavator provided by the present invention.

[0032] Figure 5 The figure shows a front structural view of a counterweight block for an excavator provided by the present invention.

[0033] Figure 6 The figure shows a rear view of the structure of a counterweight block for an excavator provided by the present invention.

[0034] Figure 7 The figure shows a side cross-sectional view of a counterweight block for an excavator provided by the present invention.

[0035] Figure 8 The figure shows a structural cross-sectional view of the positioning portion of a counterweight block for an excavator provided by the present invention.

[0036] Fig. 9 The figure shows a structural cross-sectional view of a cable installation portion of a counterweight block for an excavator provided by the present invention.

[0037] Fig.10 The figure shows a top cross-sectional view of a counterweight block for an excavator provided by the present invention. DETAILED DESCRIPTION

[0038] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] [First embodiment]

[0042] like Figure 1-Figure 10 The first embodiment provided by the present invention is shown, which provides a counterweight block for an excavator, the counterweight block including a base 3, a front plate 4 and a rear plate 2 are respectively fixed on the top of the base 3, the two sides of the front plate 4 are fixedly connected to the rear plate 2, and a top cover 1 is also fixed on the top of the front plate 4 and the rear plate 2; the base 3, the front plate 4, the rear plate 2 and the top cover 1 are respectively internal filling parts to achieve corresponding protection.

[0043] A filling space is formed inside the shell surrounded by the base 3, the top cover 1, the front plate 4 and the rear plate 2, and the filling space includes an upper middle filling portion 51 and a lower middle filling portion 52 located in the middle of the counterweight block, and a left filling portion 61 and a right filling portion 62 located on both sides of the counterweight block; wherein, the upper middle filling portion 51 is located at the top of the lower middle filling portion 52, and the left filling portion 61 and the right filling portion 62 are symmetrically distributed on both sides of the upper middle filling portion 51 and the lower middle filling portion 52; each filling portion is filled with counterweight material, and the counterweight requirement is achieved by the counterweight material while ensuring the overall mass balance and center of mass stability of the counterweight block.

[0044] A plurality of weighing sensors are arranged at the bottom of the middle upper filling part 51, the middle lower filling part 52, the left filling part 61 and the right filling part 62. The weighing sensors are connected to the controller signal arranged on the top of the counterweight block. An alarm device connected to the controller signal is integrated inside the controller to issue a corresponding alarm. The controller is connected to the excavator control room signal so that after the alarm exceeds the preset time, the controller controls the excavator to stop running from the current working condition through the excavator control room, thereby ensuring the safe and stable operation of the excavator through the shutdown mode;

[0045] When the counterweight block is undergoing a counterweight test, each weighing sensor weighs the corresponding filling part in real time and transmits the real-time detection result to the controller. The controller can compare the real-time detection result of the weighing sensor with the preset counterweight target, and judge whether the real-time counterweight of the counterweight block meets the preset requirements according to the comparison result during the test phase, so as to provide a reference basis for subsequent counterweight adjustments, thereby ensuring that the counterweight material is evenly distributed in the internal filling cavity of the counterweight block, thereby ensuring the overall counterweight accuracy and stability of the counterweight block.

[0046] When the counterweight block is actually in use, each weighing sensor weighs the corresponding filling part in real time and transmits the real-time detection result to the controller, which compares the real-time detection result with the preset counterweight target; thus, the controller performs corresponding operations such as maintaining the current working condition, alarming or shutting down the excavator according to the comparison result, thereby ensuring the stability of the overall counterweight quality of the counterweight block during the actual working process of the excavator, and ensuring the safe and stable operation of the excavator.

[0047] When the deviation between the real-time detection result and the preset counterweight target is within the normal range, the excavator is kept working in the current working condition; this means that the actual counterweight of the counterweight block meets the preset requirements, so the excavator is kept working in the current working condition;

[0048] When the deviation between the real-time detection result and the preset weight target exceeds the normal range, a corresponding alarm is issued through the alarm device; this indicates that the actual weight of the counterweight block does not meet the preset requirements at this time, and an alarm prompt needs to be issued to the user in time;

[0049] When the alarm is issued for more than the preset time, the controller controls the excavator to stop running from the current working condition through the excavator control room, thereby ensuring the safe and stable operation of the excavator through the shutdown method, and avoiding the safety hazards such as rollover and tipping that may be caused by the excavator continuing to work in this situation.

[0050] like Figure 1-Figure 3 As shown, in this embodiment, lifting ears 11 are fixedly installed on both sides of the top of the top cover 1, and the lifting ears 11 are used to facilitate the lifting of the counterweight block so that it can be lifted to the test bench for counterweight testing or the top of the excavator for actual use. A cable installation part 12 and a controller installation part 13 are respectively arranged on the top of the top cover 1 and between the lifting ears 11 on both sides. The connecting cables (not shown) between the controller and each weighing sensor are arranged inside the cable installation part 12. Preferably, in order to ensure the stable performance of the counterweight block during actual use, insulation sensors, moisture sensors, etc. can also be arranged inside each filling part to further obtain the current cable insulation performance and moisture conditions inside the counterweight block in real time; the controller (not shown) is installed on the top of the top cover 1 through the controller installation part 13.

[0051] like Figure 1 and Figure 4 As shown, a positioning portion 31 is provided at the connection position between the front side of the base 3 and the bottom of the front plate 4, and a positioning step 32 is provided inside the positioning portion 31. Through the arrangement of the positioning portion 31 and the positioning step 32, the counterweight block can be positioned in the vertical direction, front-to-back direction, and left-to-right direction at the top of the excavator.

[0052] like Figure 1 and Figure 5As shown, the front plate 4 in this embodiment includes a front middle plate 41 and a front left plate 42 and a front right plate 43 located on both sides of the front middle plate 41. Partition plates 44 are respectively arranged between the front middle plate 41 and the front left plate 42, and between the front middle plate 41 and the front right plate 43. Setting the front plate 4 as this split structure helps to make corresponding weight adjustments to the weight materials inside the filling space before and after the weight test.

[0053] like Figure 1 , Figure 8 and Fig. 9 As shown, in the present embodiment, since the middle-upper filling part 51 needs to reserve space for the top hanging ear 11, the cable installation part 12 and the controller installation part 13, the filling space of the middle-upper filling part 51 is set to be smaller than the filling space of the middle-lower filling part 52 in the present embodiment, and a plurality of support components 46 are arranged inside the middle-lower filling part 52, and the support components 46 are used to support the middle-lower filling part 52 and the counterweight material inside it.

[0054] like Figure 7 As shown, the support assembly 46 in this embodiment includes a support plate 461 fixed inside the counterweight block, and support is provided by the support plate 461. A rear support tube 462 is fixed to the rear side of the support plate 461, and a front support tube 463 is fixed to the front side of the support plate 461. The rear support tube 462 and the front support tube 463 are both hollow tubes, and the hollow aperture of the rear support tube 462 is larger than the hollow aperture of the front support tube 463. The external fixing member (not shown) passes through the rear support tube 462 and the front support tube 463 in sequence and is fixedly connected to the excavator. The stepped hollow apertures of the rear support tube 462 and the front support tube 463 facilitate the excavator to move forward and backward. When the external fixing part is inserted into the rear side of the rear support tube 462, it is also beneficial to the axial positioning effect of the external fixing part inside the rear support tube 462 and the front support tube 463. Preferably, the outer edge of the end of the front support tube 463 is evenly distributed with a plurality of support tube reinforcing ribs 464 to further enhance the supporting strength of the front support tube 463; a positioning plate 45 is arranged at positions corresponding to the plurality of support assemblies 46 on the front plate 4, and a positioning hole connected to the interior of the front support tube 463 is opened inside the positioning plate 45. The external fixing part passes through the rear support tube 462 and the front support tube 463 in turn and then passes out from the positioning hole position to achieve a fixed connection with the excavator.

[0055] To further enhance the internal support strength of the left filling part 61 and the right filling part 62, as shown in FIG. Fig.10 As shown, front reinforcing ribs 63 are provided on the front sides of the left filling part 61 and the right filling part 62 , and rear reinforcing ribs 64 are provided on the rear sides of the left filling part 61 and the right filling part 62 .

[0056] The filling spaces inside the middle upper filling part 51 and the middle lower filling part 52 are set as fixed filling structures, the filling spaces inside the left filling part 61 and the right filling part 62 are set as loading and unloading filling structures, and the filling spaces inside the left filling part 61 and the right filling part 62 are also provided with auxiliary positioning parts 65, such as Fig. 9 As shown, the auxiliary positioning part 65 can be set in the form of a positioning protrusion or a positioning groove, etc., and the auxiliary positioning part 65 can be used to realize the installation and positioning of the fixed counterweight material in the filling space inside the left filling part 61 and the right filling part 62. As a further preference in this embodiment, the setting spacing of the auxiliary positioning part 65 from the center to the edge position can be set to gradually decrease, so that the closer to the edge position, the denser the auxiliary positioning part 65 is set, thereby further increasing the counterweight adjustment range at the edge position of the counterweight block, so as to further improve the counterweight adjustment efficiency.

[0057] By setting the internal filling space of the left filling part and the right filling part as a loading and unloading filling structure, it is convenient to put fixed counterweight material therein so as to divide the internal filling space of the left filling part and the right filling part as needed to meet different counterweight adjustment requirements, increase the counterweight adjustment requirements, and improve the applicable scope of counterweight adjustment. After filling the counterweight material into the new filling space divided by the fixed counterweight material in the internal filling space of the left filling part and the right filling part, the sealing filler is filled to achieve sealing and weight equalization effects.

[0058] The fixed ballast weight material in this embodiment is preferably waste steel plates, etc., while the filling ballast weight material is waste blocks or steel blocks with smaller volume dimensions, etc., and the sealing filler is molten metal liquid to achieve the fixation of the fixed ballast weight material and the filling ballast weight material inside the filling space.

[0059] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A counterweight for an excavator, the counterweight comprising a base (3), a front plate (4) and a rear plate (2) being fixed on the top of the base (3), two sides of the front plate (4) being fixedly connected to the rear plate (2), and a top cover (1) being fixed on the top of the front plate (4) and the rear plate (2); Features: A filling space is formed inside the shell surrounded by the base (3), the top cover (1), the front plate (4) and the rear plate (2), the filling space comprising an upper middle filling portion (51) and a lower middle filling portion (52) located in the middle of the counterweight block, and a left filling portion (61) and a right filling portion (62) located on both sides of the counterweight block; wherein the upper middle filling portion (51) is located on the top of the lower middle filling portion (52), and the left filling portion (61) and the right filling portion (62) are symmetrically distributed on both sides of the upper middle filling portion (51) and the lower middle filling portion (52); A plurality of weighing sensors are arranged at the bottom of the middle upper filling part (51), the middle lower filling part (52), the left filling part (61) and the right filling part (62), the weighing sensors are connected to the controller signal arranged on the top of the counterweight block, the controller is internally integrated with an alarm device connected to the controller signal, and the controller is connected to the excavator control room signal; The controller can determine whether the real-time weight of the counterweight block meets the preset requirements according to the real-time detection results of the weighing sensor at the corresponding position, so that when the counterweight block is actually used, the excavator can be operated to maintain the current working condition, alarm or shut down according to the comparison results; Lifting ears (11) are fixedly mounted on both sides of the top of the top cover (1), and a cable mounting portion (12) and a controller mounting portion (13) are respectively arranged on the top of the top cover (1) and between the lifting ears (11) on both sides; The filling space of the middle and upper filling part (51) is smaller than the filling space of the middle and lower filling part (52), and a plurality of support components (46) are arranged inside the middle and lower filling part (52); The support assembly (46) comprises a support plate (461) fixed inside the counterweight block, a rear support tube (462) fixed on the rear side of the support plate (461), and a front support tube (463) fixed on the front side of the support plate (461), the rear support tube (462) and the front support tube (463) both being hollow tubes, and the hollow hole diameter of the rear support tube (462) being larger than the hollow hole diameter of the front support tube (463), and the external fixing part passing through the rear support tube (462) and the front support tube (463) in sequence and then being fixedly connected to the excavator.

2. A counterweight for an excavator according to claim 1, Features: A positioning portion (31) is provided at a connection position between the front side of the base (3) and the bottom of the front plate (4), and a positioning step (32) is provided inside the positioning portion (31).

3. The counterweight block for an excavator according to claim 1, Features: The front plate (4) comprises a front middle plate (41) and a front left plate (42) and a front right plate (43) located on both sides of the front middle plate (41), and a partition plate (44) is respectively provided between the front middle plate (41) and the front left plate (42), and between the front middle plate (41) and the front right plate (43).

4. The counterweight block for an excavator according to claim 1, Features: A plurality of support tube reinforcing ribs (464) are evenly distributed on the outer edge of the end of the front support tube (463).

5. The counterweight block for an excavator according to claim 1, Features: Positions on the front plate (4) corresponding to the plurality of support components (46) are provided with positioning plates (45), and positioning holes communicating with the interior of the front support tube (463) are provided inside the positioning plate (45).

6. The counterweight block for excavator according to claim 1, Features: Front reinforcing ribs (63) are provided on the front sides of the left filling portion (61) and the right filling portion (62), and rear reinforcing ribs (64) are provided on the rear sides of the left filling portion (61) and the right filling portion (62).

7. The counterweight block for an excavator according to claim 1, Features: The internal filling spaces of the middle upper filling part (51) and the middle lower filling part (52) are configured as fixed filling structures, the internal filling spaces of the left filling part (61) and the right filling part (62) are configured as loading and unloading filling structures, and the internal filling spaces of the left filling part (61) and the right filling part (62) are also configured with auxiliary positioning parts (65).

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