Excavator counterweight weighting mechanism and using method thereof

Abstract

The invention provides an excavator counter weight weighting mechanism and a using method thereof, and belongs to the technical field of excavators, the excavator counter weight weighting mechanism comprises weighting plates, a weighting bottom plate and a fixing assembly, the weighting bottom plate is fixedly connected with a loader counter weight through the fixing assembly, and the multiple weighting plates can be fixed to the upper portion of the weighting bottom plate in a stacked mode; the fixing assembly comprises a fixing base and a fixing shaft, the fixing shaft penetrates through a lifting lug on the top of a counter weight of the excavator, and the two ends of the fixing shaft are fixedly connected with the weighting bottom plate through the fixing base. An original excavator balance weight structure does not need to be changed, and balance weight adjustment is achieved while the stability of an original excavator is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of excavators, and in particular relates to an excavator counterweight weighting mechanism and a use method thereof. Background Art

[0002] Generally, the turntable of an excavator is equipped with a counterweight to ensure the stability of the center of gravity of the entire excavator, thereby ensuring the stability of the excavator.

[0003] Existing excavator counterweights cannot provide sufficient balancing torque under special operating conditions, such as operating on steep slopes, excavating overweight materials, or operating with a large working range. This leads to insufficient stability of the entire machine and the risk of tipping, limiting the excavator's operating capacity and operating range under complex working conditions.

[0004] In order to ensure the stability of the excavator under different working conditions, the counterweight weight on the excavator needs to be adjustable.

[0005] Most of the current excavator counterweight adjustable mechanisms are modified on the original excavator counterweight, or the excavator counterweight is cut or a fixed bracket is welded on the excavator counterweight to add a new counterweight to adjust the entire counterweight weight. However, the above methods change the structure of the original excavator counterweight and destroy the stability of the original excavator. Summary of the Invention

[0006] In response to the defects or shortcomings in the existing technology, the present invention provides an excavator counterweight weighting mechanism and a method of using the same, which does not require changing the original excavator counterweight structure and can achieve counterweight weight adjustment while ensuring the stability of the original excavator.

[0007] To achieve the above object, the present invention adopts the following technical solutions: In a first aspect, an embodiment of the present invention provides an excavator counterweight weighting mechanism, comprising a weighting plate, a weighting base plate, and a fixing assembly, wherein the weighting base plate is fixedly connected to the loader counterweight via the fixing assembly, and a plurality of weighting plates are provided, and the plurality of weighting plates are stacked and fixed above the weighting base plate; The fixing assembly includes a fixing seat and a fixing shaft. The fixing shaft passes through the top lifting lug of the excavator counterweight, and both ends of the fixing shaft are fixedly connected to the weighted bottom plate through the fixing seat.

[0008] Furthermore, the weighted bottom plate is fixed on the top surface of the excavator counterweight, the shape of the weighted bottom plate is the same as the shape of the top surface of the excavator counterweight, and the size of the weighted bottom plate is not larger than the size of the top surface of the excavator counterweight.

[0009] Furthermore, two first avoidance holes are provided on the top surface of the weighted bottom plate, the top surface of the excavator counterweight is a plane, and two lifting ears are provided, which are symmetrically arranged on the top surface of the excavator counterweight, and the two lifting ears are respectively arranged corresponding to the two avoidance holes.

[0010] Further, the fixed shaft comprises a fixed segment and two connecting segments, the connecting segments are arranged at the two ends of the fixed segment respectively, the fixed segment and the connecting segments are integrally formed, the longitudinal section of the fixed segment is circular, and the diameter of the fixed segment is same as the inner diameter of the lifting hole on the lifting lug.

[0011] Further, the connecting segments have the same diameter as the fixed seat, the bottom of the connecting segment is flattened, and the opposite sides of the fixed seat are provided with fixed holes, the section shape of the fixed hole is same as the section shape of the connecting segment.

[0012] Further, the fixed seat and the heavy bottom plate are provided with a spacer plate.

[0013] Further, the heavy plate comprises a heavy middle plate and a heavy top plate, the heavy middle plate is fixed on the top of the heavy bottom plate, and the heavy top plate is fixed on the top of the heavy middle plate.

[0014] Further, the heavy middle plate has the same shape as the heavy bottom plate, and the size of the heavy middle plate is not greater than the size of the heavy bottom plate, the upper surface of the heavy bottom plate is provided with a plurality of first threaded holes, the upper surface of the heavy middle plate is provided with a plurality of first through holes, and the plurality of first threaded holes and the plurality of first through holes are arranged correspondingly.

[0015] Further, the heavy top plate has the same shape as the heavy middle plate, and the size of the heavy top plate is equal to the size of the heavy middle plate, the upper surface of the heavy middle plate is provided with a plurality of second threaded holes, the upper surface of the heavy top plate is provided with a plurality of second through holes, and the plurality of second threaded holes and the plurality of second through holes are arranged correspondingly.

[0016] In the second aspect, the embodiments of the present application provide a use method of the excavator counterweight weighting mechanism, which utilizes the excavator counterweight weighting mechanism as described above, and comprises the following steps: First, the heavy bottom plate is lifted above the excavator counterweight, the first avoiding hole on the heavy bottom plate is aligned with the lifting lug on the top of the excavator counterweight, the heavy bottom plate is placed on the top surface of the excavator counterweight, the fixed shaft is inserted through the lifting hole of the lifting lug, and the two ends of the fixed shaft are inserted into the fixed hole of the fixed seat, the spacer plate is selected according to the gap between the fixed seat and the heavy bottom plate, and is placed between the fixed seat and the heavy plate, and finally the fixed seat is fixed on the two sides of the first avoiding hole through the bolts; The heavy middle plate is lifted above the heavy bottom plate, the second avoiding hole on the heavy middle plate is aligned with the fixed assembly, the heavy middle plate is placed on the top surface of the heavy bottom plate, and is fixed and connected through the bolts; The heavy top plate is lifted above the heavy middle plate, the third avoiding hole on the heavy top plate is aligned with the fixed assembly, and the mounting hole on the heavy top plate is aligned with the bolt on the heavy middle plate, the heavy top plate is placed on the top surface of the heavy top plate, and is fixed and connected through the bolts; Continue to fix the weighting plate above the weighting plate until the excavator weight requirement is met.

[0017] Compared with the prior art, the present application has the beneficial effects that: 1、The present application sets up a fixed seat and a fixed shaft, connects the excavator weight lug with the fixed shaft, and connects the weighting bottom plate with the fixed seat, without changing the original excavator weight structure, connects the weight weighting mechanism with the lug, and ensures the stability of the original excavator.

[0018] 2、The present application sets up multiple weighting plates, which can be stacked on the weighting bottom plate and connected in sequence, and can be flexibly selected and combined according to different excavator models and actual operation requirements, realizes personalized customization of the weight, greatly improves the adaptability and universality of the weight, and meets the diversified working scene requirements.

[0019] 3、The present application only connects the excavator weight and the weighting plate with the fixed seat and the fixed shaft, without the need for complex tools and cumbersome installation steps, so that the weight module and the excavator main body can be quickly installed and disassembled, greatly saving the installation and maintenance time and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a connection relationship diagram of the weight weighting mechanism and the excavator weight in the embodiment one of the present application. Figure 2 The figure is a structure schematic diagram of the weighting bottom plate, the weighting middle plate and the weighting top plate in the embodiment one of the present application. Figure 3 The figure is a structure schematic diagram of the fixed assembly in the embodiment one of the present application. Among them, 1, weighting plate; 101, weighting middle plate; 102, weighting top plate; 103, first through hole; 104, second avoiding hole; 105, second threaded hole; 106, second through hole; 107, third avoiding hole; 108, mounting hole; 109, lifting ring mounting hole; 2, weighting bottom plate; 201, first avoiding hole; 202, first threaded hole; 3, fixed assembly; 301, fixed seat; 302, fixed shaft; 303, fixed section; 304, connecting section; 305, fixed hole; 4, excavator weight; 5, lug; 6, pad plate. DETAILED DESCRIPTION

[0021] The present application will be further described below in combination with the drawings and embodiments.

[0022] Embodiment one A typical embodiment of the present application is as follows: Figure 1As shown in the figure, a kind of excavator counterweight weighting mechanism, including weighting plate 1, weighting bottom plate 2 and fixed assembly 3, weighting bottom plate 2 is fixedly connected with excavator counterweight 4 by fixed assembly 3, weighting plate 1 is equipped with multiple, multiple weighting plate 1 can be stacked and placed on weighting bottom plate 2, and is fixedly connected by bolt.

[0023] Wherein, as Figure 2 As shown in the figure, weighting bottom plate 2 is fixed on the top surface of excavator counterweight 4, the shape of weighting bottom plate 2 is the same as the top surface shape of excavator counterweight 4, and the size of weighting bottom plate 2 is not greater than the size of the top surface of excavator counterweight 4, to ensure the stability of the counterweight, two first avoiding holes 201 are formed in the top surface of weighting bottom plate 2, the top surface of excavator counterweight 4 is a plane, and two lifting lugs 5 are symmetrically arranged on the top surface, the lifting lug 5 is integrally formed with the excavator counterweight 4, for lifting the excavator counterweight 4, two lifting lugs 5 are respectively arranged corresponding to two first avoiding holes 201, and the shape of the first avoiding hole 201 is matched with the cross-sectional shape of the lifting lug 5, when the weighting bottom plate 2 is placed on the top of the excavator counterweight 4, the two lifting lugs 5 on the top surface of the excavator counterweight 4 can pass through the first avoiding hole 201 on the weighting bottom plate 2, so that the weighting bottom plate 2 is better attached to the top surface of the excavator counterweight 4.

[0024] A plurality of bolt holes are formed on the two sides of the first avoiding hole 201, for connecting the fixed assembly 3, and the weighting bottom plate 2 is fixedly connected with the top lifting lug 5 of the excavator counterweight 4 through the fixed assembly 3.

[0025] Specifically, as Figure 3 As shown in the figure, the fixed assembly 3 includes a fixed seat 301 and a fixed shaft 302, the fixed seat 301 is provided with two, which are fixed on the two sides of the first avoiding hole 201 by bolts, and the fixed shaft 302 is connected between the two fixed seats 301, the fixed shaft 302 passes through the lifting hole on the lifting lug 5, so that the fixed seat 301 and the fixed shaft 302 are used to fix the weighting bottom plate 2 on the top of the excavator counterweight 4.

[0026] Further, the fixed shaft 302 includes a fixed segment 303 and a connecting segment 304, the connecting segment 304 is provided with two, which are respectively arranged at the two ends of the fixed segment 303, and the fixed segment 303 and the connecting segment 304 are integrally formed, the longitudinal section of the fixed segment 303 is circular, and the diameter is the same as the inner diameter of the lifting hole on the lifting lug 5, so that the fixed segment 303 can be inserted into the lifting hole on the lifting lug 5 without shaking.

[0027] The connecting section 304 has the same diameter as the fixed section 303, the bottom of the connecting section 304 is flattened, and the opposite sides of the two fixed seats 301 are provided with fixed holes 305, the cross-sectional shape of the fixed holes 305 is the same as that of the connecting section 304, so that the end of the connecting section 304 can be inserted into the fixed hole 305 of the fixed seat 301, thereby realizing the connection between the fixed shaft 302 and the fixed seat 301. Since the bottom of the connecting section 304 is flattened and cooperates with the fixed hole 305 on the fixed seat 301, the rotation of the fixed shaft 302 can be prevented, and the reliability of the connection is ensured.

[0028] Since there is a certain error in the height of the lifting hole on the lifting lug 5 when it is opened during production, there will be a certain gap between the fixed seat 301 and the heavy bottom plate 2 after the fixed seat 301 and the fixed shaft 302 are installed. In the embodiment, a gasket 6 is arranged between the fixed seat 301 and the heavy bottom plate 2, which can be used to adjust the height of the fixed seat 301 to ensure complete adhesion and avoid the fixed seat 301 being suspended, thereby ensuring the stability of the installation.

[0029] The heavy plate 1 is provided with a plurality of heavy plates 1, and in the embodiment, the heavy plate 1 is provided with two heavy middle plates 101 and a heavy top plate 102, wherein the heavy middle plate 101 is fixed on the top of the heavy bottom plate 2, and the heavy top plate 102 is fixed on the top of the heavy middle plate 101.

[0030] The heavy middle plate 101 has the same shape as the heavy bottom plate 2, and the size of the heavy middle plate 101 is not greater than that of the heavy bottom plate 2. A plurality of first threaded holes 202 are formed on the upper surface of the heavy bottom plate 2, and a plurality of first through holes 103 are formed on the upper surface of the heavy middle plate 101. The plurality of first threaded holes 202 and the plurality of first through holes 103 are correspondingly arranged, a bolt is passed through the first through hole 103 and is screwed with the first threaded hole 202, thereby fixing the heavy middle plate 101 on the heavy bottom plate 2. The heavy middle plate 101 is further provided with a second avoiding hole 104, the second avoiding hole 104 is provided with two second avoiding holes 104, the two second avoiding holes 104 correspond to the two fixed assemblies 3 respectively, and are adapted to the fixed assemblies 3, thereby avoiding the fixed assemblies 3 when fixing the heavy middle plate 101, so that the bottom surface of the heavy middle plate 101 is attached to the top surface of the heavy bottom plate 2.

[0031] The shape of the reinforced top plate 102 is the same as that of the reinforced middle plate 101, and the size of the reinforced top plate 102 is equal to that of the reinforced middle plate 101, a plurality of second threaded holes 105 are formed on the upper surface of the reinforced middle plate 101, a plurality of second through holes 106 are formed on the upper surface of the reinforced top plate 102, the plurality of second threaded holes 105 and the plurality of second through holes 106 are correspondingly arranged, a bolt is passed through the second through hole 106 and is screwed with the second threaded hole 105, so as to fix the reinforced top plate 102 on the reinforced middle plate 101, a plurality of third avoiding holes 107 and a plurality of mounting holes 108 are further formed on the reinforced top plate 102, wherein the third avoiding holes 107 are two, the two third avoiding holes 107 are correspondingly arranged with the two fixing assemblies 3, so as to avoid the fixing assembly 3 when fixing the reinforced top plate 102, the mounting holes 108 are a plurality of, the plurality of mounting holes 108 are correspondingly arranged with the first through holes 103 on the reinforced middle plate 101, and the diameter of the mounting hole 108 is greater than that of the bolt gasket, so as to avoid the bolt gasket when fixing the reinforced top plate 102, and the bottom surface of the reinforced top plate 102 is attached to the top surface of the reinforced middle plate 101.

[0032] It can be known that the top surface of the reinforced bottom plate 2, the reinforced middle plate 101 and the reinforced top plate 102 is provided with a lifting ring mounting hole 109 on both sides, which can be used for connecting a lifting ring, so as to hoist the reinforced bottom plate 2, the reinforced middle plate 101 and the reinforced top plate 102.

[0033] The excavator counterweight reinforcing mechanism of the present application is connected to the excavator counterweight by the fixing shaft, and the reinforced bottom plate is connected by the fixing seat, without changing the original excavator counterweight structure, the counterweight reinforcing mechanism is connected by the lifting lug, and the stability of the original excavator is ensured.

[0034] Embodiment two The present embodiment provides a use method of the excavator counterweight reinforcing mechanism, which utilizes the excavator counterweight reinforcing mechanism as described in embodiment one, and comprises the following steps: First, the reinforced bottom plate is hoisted above the excavator counterweight, the first avoiding hole on the reinforced bottom plate is aligned with the lifting lug on the top of the excavator counterweight, the reinforced bottom plate is placed on the top surface of the excavator counterweight, the fixing shaft is passed through the hoisting hole of the lifting lug, and the two ends of the fixing shaft are inserted into the fixing hole of the fixing seat, a suitable gasket is selected according to the gap between the fixing seat and the reinforced bottom plate, and is placed between the fixing seat and the reinforced plate, and finally the fixing seat is fixed on both sides of the first avoiding hole by bolts; The reinforced middle plate is hoisted above the reinforced bottom plate, the second avoiding hole on the reinforced middle plate is aligned with the fixing assembly, the reinforced middle plate is placed on the top surface of the reinforced bottom plate, and is fixed and connected by bolts; The weighted top plate is hoisted above the weighted middle plate, the third avoiding hole on the weighted top plate is aligned with the fixed assembly, the mounting hole on the weighted top plate is aligned with the bolt on the weighted middle plate, the weighted top plate is placed on the top surface of the weighted top plate, and the weighted top plate is fixed and connected through the bolt; Continue to fix the weighted plate above the weighted top plate until the weight requirement of the excavator counterweight is met.

[0035] The present application can be flexibly selected and combined according to different excavator models and actual operation requirements by stacking the plurality of weighted plates on the weighted bottom plate and connecting them in sequence, realizes personalized customization of the counterweight, greatly improves the adaptability and universality of the counterweight, and meets the diversified working scene requirements.

[0036] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A counterweight adding mechanism for an excavator, characterized in that: It includes a weighted plate, a weighted bottom plate and a fixing assembly. The weighted bottom plate is fixedly connected to the loader counterweight through the fixing assembly. There are multiple weighted plates, and the multiple weighted plates are stacked and fixed above the weighted bottom plate. The fixing assembly includes a fixing seat and a fixing shaft. The fixing shaft passes through the top lifting lug of the excavator counterweight, and both ends of the fixing shaft are fixedly connected to the weighted bottom plate through the fixing seat.

2. The excavator counterweight adding mechanism according to claim 1, characterized in that: The weighted bottom plate is fixed on the top surface of the excavator counterweight. The shape of the weighted bottom plate is the same as that of the top surface of the excavator counterweight, and the size of the weighted bottom plate is not larger than that of the top surface of the excavator counterweight.

3. The excavator counterweight weighting mechanism according to claim 1, characterized in that: The top surface of the weighted bottom plate is provided with two first avoidance holes, the top surface of the excavator counterweight is a plane, and two lifting ears are provided, which are symmetrically arranged on the top surface of the excavator counterweight, and the two lifting ears are respectively arranged corresponding to the two avoidance holes.

4. The excavator counterweight weighting mechanism according to claim 1, characterized in that: The fixed shaft includes a fixed section and a connecting section. There are two connecting sections, which are respectively arranged at both ends of the fixed section. The fixed section and the connecting section are integrally formed. The longitudinal cross-section of the fixed section is circular, and its diameter is the same as the inner diameter of the lifting hole on the lifting ear.

5. The excavator counterweight adding mechanism according to claim 4, characterized in that: The connecting section and the fixing seat have the same diameter, the bottom of the connecting section is flattened, and fixing holes are opened on the opposite sides of the two fixing seats. The cross-sectional shape of the fixing holes is the same as that of the connecting section.

6. The excavator counterweight weighting mechanism according to claim 1, characterized in that: A pad is provided between the fixing seat and the weighted bottom plate.

7. The excavator counterweight weighting mechanism according to claim 1, characterized in that: The weighted plate includes a weighted middle plate and a weighted top plate, wherein the weighted middle plate is fixed on the top of the weighted bottom plate, and the weighted top plate is fixed on the top of the weighted middle plate.

8. The excavator counterweight adding mechanism according to claim 7, characterized in that: The shape of the weighted middle plate is the same as that of the weighted bottom plate, and the size of the weighted middle plate is not larger than that of the weighted bottom plate. A plurality of first threaded holes are provided on the upper surface of the weighted bottom plate, and a plurality of first through holes are provided on the upper surface of the weighted middle plate. The plurality of first threaded holes are arranged corresponding to the plurality of first through holes.

9. The excavator counterweight adding mechanism according to claim 7, characterized in that: The shape of the weighted top plate is the same as that of the weighted middle plate, and the size of the weighted top plate is equal to that of the weighted middle plate. A plurality of second threaded holes are provided on the upper surface of the weighted middle plate, and a plurality of second through holes are provided on the upper surface of the weighted top plate. The plurality of second threaded holes are arranged corresponding to the plurality of second through holes.

10. A method for using an excavator counterweight weighting mechanism, using the excavator counterweight weighting mechanism according to any one of claims 1 to 9, characterized in that: The following steps are involved: First, hoist the weighted base plate above the excavator counterweight, aligning the first avoidance hole on the weighted base plate with the lifting lug on the top of the excavator counterweight. Place the weighted base plate on the top surface of the excavator counterweight, pass the fixed shaft through the lifting hole of the lifting lug, and insert both ends of the fixed shaft into the fixing holes of the fixing seat. Select a pad according to the gap between the fixing seat and the weighted base plate, and place it between the fixing seat and the weighted plate. Finally, fix the fixing seat on both sides of the first avoidance hole with bolts. Hoist the weighted middle plate above the weighted bottom plate, align the second avoidance hole on the weighted middle plate with the fixing assembly, place the weighted middle plate on the top surface of the weighted bottom plate, and secure it with bolts; Hoist the weighted top plate above the weighted middle plate, align the third avoidance hole on the weighted top plate with the fixing assembly, and align the mounting holes on the weighted top plate with the bolts on the weighted middle plate. Place the weighted top plate on the top surface of the weighted top plate and secure it with bolts. Continue to secure weight plates above the weighted top plate until the excavator counterweight weight requirement is met.

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