Variable moment rotating counterweight for a paving machine and method of installation

Abstract

The application provides a variable-moment rotating counterweight for a paver and a mounting method, and belongs to the technical field of engineering machinery. The technical problems of the traditional counterweight being unable to be adjusted, the counterweight being unable to be transported, and the vehicle width being limited are solved. The technical scheme is as follows: a variable-moment rotating counterweight for a paver, comprising mounting seat assemblies mounted on both sides of the front side of the paver frame, and a counterweight assembly arranged on the mounting seat assemblies; the mounting seat assemblies comprise mounting seat one, mounting seat two and mounting seat three, which are sequentially arranged at the front end of the paver frame; the counterweight assembly comprises a base counterweight block and a plurality of standard counterweight blocks of the same specification. The beneficial effects of the application are as follows: the counterweight can be adjusted, the counterweight assembly can be adjusted when the rear-mounted screed changes, the stability of the vehicle's center of gravity is ensured, the counterweight is convenient to move and transport, and the cost is saved.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to a variable torque rotating counterweight for a paver and its installation method. Background Technology

[0002] The counterweight adjustment areas on both sides of the paver's hopper have a certain width due to operational requirements, and are located at the very front of the vehicle. Therefore, placing counterweights on both sides of the hopper helps to adjust the stability of the entire vehicle, ensuring the stability of the paver's center of gravity during operation and improving the stability of the paving operation. This is the function of the counterweights.

[0003] Currently, most mainstream pavers have counterweights on both sides of the hopper, and these counterweights are welded onto both sides of the frame. This traditional welded counterweight method has the following problems:

[0004] 1. Because the weight of the rear screed can be combined and varied, for example, a 9m wide paver can be combined within 9 meters (the screed can be 9m, 8m, 7m, 6.5m, 6m, 5m, etc.), the center of gravity of the paver will change. Since the fixed counterweight cannot be adjusted, the stability of the center of gravity of the whole machine cannot be guaranteed. This will affect the stability of the paver operation and the paving quality.

[0005] 2. Due to vehicle width restrictions, the placement of fixed counterweights is limited. Some large pavers cannot even reach the designed center of gravity, resulting in a decrease in overall vehicle stability. Fixed counterweights cannot be adjusted, so the stability of the machine's center of gravity cannot be guaranteed.

[0006] 3. Due to the heavy counterweight, transportation costs are increased during production. Generally, the fixed counterweight is made of thick steel plate welded to the frame, which increases transportation costs during production, resulting in higher costs.

[0007] 4. Currently, the counterweights on both sides of the paver hopper have the same technical problems as mentioned above, and there is little room for improvement by adopting and improving the existing structure.

[0008] Therefore, there is an urgent need for a paver with a variable torque rotating counterweight to solve the above technical problems. Summary of the Invention

[0009] The purpose of this invention is to overcome the problems in the prior art and provide a variable torque rotating counterweight for pavers that can adjust the center of gravity, is easy to disassemble and transport, and can adjust the width of the counterweight. This invention provides a new counterweight design on both sides of the paver hopper for pavers and other construction machinery, improves product stability and adaptability, enhances user experience, and provides design ideas for subsequent similar designs.

[0010] To achieve the aforementioned objectives, the present invention employs the following technical solution: a variable torque rotating counterweight for a paver, comprising mounting base assemblies installed on both sides of the front of the paver frame, and a counterweight assembly mounted on the mounting base assemblies; the mounting base assemblies include mounting base one, mounting base two, and mounting base three, which are sequentially arranged at the front end of the paver frame; one side wall of each mounting base has a shaft hole one, within which a detachable fixed support shaft is disposed; mounting base two and mounting base three are respectively provided with a positioning hole one and a mounting hole; the counterweight assembly includes a base counterweight block and multiple standard counterweight blocks of the same specifications, which are stacked one on top of the base counterweight block; the side wall of the base counterweight block has a shaft hole two for the fixed support shaft to pass through; the base counterweight block has a positioning hole two, within which a detachable rotating pin is disposed; mounting base one, mounting base two, and mounting base three are mounted on the vehicle body, serving as a basic support.

[0011] Furthermore, the lower side wall of the base counterweight is also provided with a second mounting hole. After the mounting component is rotated 180°, the first mounting hole and the second mounting hole are connected by fastening bolts to facilitate fixing the mounting component.

[0012] Furthermore, both the base counterweight and the standard registered counterweight are provided with multiple connecting screw holes. Connecting bolts that mate with the connecting screw holes are provided between adjacent counterweights in the counterweight assembly. Adjacent counterweights can be connected and assembled together through the connecting bolts. At the same time, adjacent counterweights can be staggered for installation, resulting in multiple combinations and convenient adjustment of the lever arm.

[0013] Furthermore, one end of the standard counterweight is provided with a positioning notch, and the end of the standard counterweight on the same side as the positioning notch and the end of the base counterweight on the same side as the positioning hole are both arc-shaped. The arc shape is beneficial to the fact that the mounting components and the counterweight components are not interfered with when rotating.

[0014] Furthermore, both the base counterweight and the standard counterweight have a recessed groove on their upper surfaces. The connecting screw hole is located on the bottom wall of the recessed groove. After the connecting bolt is installed, it is lower than the top surface of the recessed groove. In this way, when adjacent counterweights are installed, the connecting bolt is located inside the recessed groove and will not interfere with the counterweight above.

[0015] Furthermore, the standard counterweight block located at the top is provided with eye bolts that mate with the connecting screw holes, thereby facilitating the hoisting of the counterweight assembly.

[0016] Furthermore, the lower side wall of the base counterweight is provided with a set of movable wheels, which facilitates the transfer of the counterweight assembly.

[0017] Furthermore, the ends of the rotating pin and the fixed support shaft extend with a screw, which facilitates installation and fixation using nuts and washers.

[0018] Furthermore, threaded holes are provided on both sides of the front of the paver frame, and multiple fixing holes are provided on the mounting base assembly. The mounting base assembly is installed on the paver frame by the cooperation of mounting bolts, fixing holes and threaded holes.

[0019] To better achieve the above-mentioned objectives, this invention provides a method for installing a variable torque rotating counterweight for a paver, comprising the following steps:

[0020] Step 1: Install mounting base one, mounting base two, and mounting base three on both sides of the front end of the paver frame;

[0021] Step 2: Push the assembled counterweight assembly to the paver installation site, and then use auxiliary tools to place the bottom of the counterweight assembly on the mounting surface of mounting base two. Use a rotating pin to pass through positioning hole two and positioning hole one, and use nuts and washers for pre-tightening assembly.

[0022] Step 3: Pass the fixed support pin through shaft hole one and shaft hole two, and tighten the assembly with nuts and washers; then tighten the nut at the lower end of the rotating pin. The installation is now complete.

[0023] Step 4: Retrieve the auxiliary tools, and then use a hoisting method to retrieve the lifting device. If a pad is used, move the vehicle forward using the vehicle's power to detach from the pad.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. This invention is a detachable counterweight assembly. The corresponding counterweight can be adjusted according to the replacement of the vehicle's ironing plate to maintain the stability of the vehicle's center of gravity and improve the stability of the work quality. By assembling through threaded holes at different positions, torque can be changed and the lever arm can be adjusted. The adjustment range of the counterweight can be increased without changing the weight. Compared with the fixed type, a smaller weight can be used to achieve the same counterweight effect by adjusting the lever arm.

[0026] 2. After the counterweight is installed on the vehicle, it can be retracted by rotating 180° after the operation is completed, which facilitates transportation with the vehicle; reduces the disassembly and handling when the paver is moved to another site; since the counterweight component can rotate horizontally within 180°, the width of the vehicle is not limited by the counterweight arrangement, and at the same time, it helps to improve the vehicle's passability.

[0027] 3. As it is a prefabricated counterweight, it can be quickly assembled and disassembled, transported and delivered separately, and is interchangeable with different models, making it highly versatile; the counterweight block assembly comes with its own pulley system, which can be moved by external force, improving the convenience of counterweight transfer, handling and installation.

[0028] 4. The counterweights adopt a stacked design, which makes them easy to handle and reduces the weight of a single counterweight, thus reducing the user's labor intensity. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the counterweight component in this invention.

[0032] Figure 3 This is a schematic diagram of the structure of the mounting bracket assembly after installation in this invention.

[0033] Figure 4 This is a schematic diagram of the structure of the base counterweight block after installation in this invention.

[0034] Figure 5 This is a schematic diagram of the staggered installation of the present invention.

[0035] Figure 6 This is a top view of the process of rotating 180° according to the present invention.

[0036] The attached diagram is labeled as follows: 1. Paver frame; 2. Mounting seat one; 3. Mounting seat two; 4. Mounting seat three; 5. Shaft hole one; 6. Fixed support shaft; 7. Positioning hole one; 8. Mounting hole one; 9. Base counterweight; 10. Standard counterweight; 11. Shaft hole two; 12. Positioning hole two; 13. Positioning notch; 14. Rotary pin; 15. Connecting screw hole; 16. Connecting bolt; 17. Sinking groove; 18. Lifting eye screw; 19. Mounting bolt; 20. Fixing hole; 21. Fastening bolt; 22. Moving wheel set. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] Example:

[0039] like Figure 1-6 This embodiment provides a variable torque rotating counterweight for a paver, including mounting base assemblies installed on both sides of the front of the paver frame 1, and a counterweight assembly disposed on the mounting base assemblies;

[0040] The mounting bracket assembly includes mounting bracket 1 2, mounting bracket 2 3, and mounting bracket 3 4. Mounting bracket 1 2, mounting bracket 2 3, and mounting bracket 3 4 are sequentially arranged at the front end of the paver frame 1. Mounting bracket 1 2 and mounting bracket 2 3 are both L-shaped. Mounting bracket 1 2 has a shaft hole 5 on its side wall. A detachable fixed support shaft 6 is provided in the shaft hole 5. Mounting bracket 2 3 and mounting bracket 3 4 are respectively provided with positioning hole 7 and mounting hole 8.

[0041] The counterweight assembly includes a base counterweight block 9 and multiple standard counterweight blocks 10 of the same specifications. The multiple standard counterweight blocks 10 are stacked on the upper side of the base counterweight block 9. The side wall of the base counterweight block 9 is provided with a shaft hole 11 for the fixed support shaft 6 to pass through. The base counterweight block 9 is provided with a positioning hole 12. A detachable rotating pin 14 is provided in the positioning hole 12. Mounting seat 1 2, mounting seat 2 3 and mounting seat 3 4 are installed on the paver frame 1 to provide basic support. Both the base counterweight block 9 and the standard counterweight blocks 10 are provided with multiple connecting screw holes 15. Connecting bolts 16 that mate with the connecting screw holes 15 are provided between adjacent counterweight blocks in the counterweight assembly. One end of the standard counterweight block 10 is provided with a positioning notch 13. The ends of the standard counterweight block 10 and the ends of the base counterweight block 9 are both designed as arc shapes.

[0042] The lower side wall of the base counterweight 9 is also provided with a second mounting hole. The first mounting hole 8 and the second mounting hole are connected by a fastening bolt 21. The upper surfaces of both the base counterweight 9 and the standard counterweight 10 are provided with recessed grooves 17. The connecting screw hole 15 is located on the bottom wall of the recessed groove 17. After the connecting bolt 16 is installed, its top is lower than the top surface of the recessed groove 17, so that the stacking of the counterweights is not affected. The uppermost standard counterweight 10 is provided with a lifting eye screw 18 that mates with the connecting screw hole 5. The lifting eye screw 18 makes it easier to lift the counterweight assembly; the lower side wall of the base counterweight block 9 is provided with a set of movable wheels 22, which facilitates the transfer of the counterweight; the end of the rotating pin 14 and the fixed support shaft 6 extends with a screw, which facilitates installation and fixation with nuts and washers; threaded holes are opened on both sides of the front side of the paver frame; multiple fixing holes 20 are opened on the mounting base assembly; the mounting base assembly is installed on the paver frame 1 by the cooperation of mounting bolts 19, fixing holes 20 and threaded holes.

[0043] To further achieve the technical effects of this embodiment, this embodiment also provides a method for installing a variable torque rotating counterweight for a paver, the specific implementation process of which is as follows:

[0044] Step 1: The operator shall install mounting base 1 2, mounting base 2 3 and mounting base 3 4 on the pre-drilled threaded holes on both sides of the front side of the paver frame 1 or on the place where the vehicle needs to install this counterweight (the mounting holes need to be pre-drilled);

[0045] Step 2: Push the assembled counterweight assembly to the paver installation site. The counterweight assembly can be pushed onto the pad or lifted and installed using eye bolts 18. Place the bottom of the counterweight assembly on the mounting surface of mounting base 2 3, and align positioning hole 1 7 with positioning hole 2 12. Use rotating pin 14 to pass through positioning hole 1 7 and positioning hole 2 12, and pre-tighten the assembly using nuts and washers.

[0046] Step 3: Pass the fixed support pin 6 through the shaft hole 5 and the shaft hole 11, and tighten the assembly with nuts and washers; then tighten the nut at the lower end of the rotating pin 14. The installation is now complete.

[0047] Step 4: Retrieve auxiliary tools. If it is a lifting device, retrieve it by lifting. If it is a pad, move the vehicle forward using its own power to detach it from the pad.

[0048] Usage process:

[0049] Once the counterweight assembly is complete, the paver or vehicle can operate normally. When the paver needs to adjust its center of gravity or the counterweight needs to be adjusted due to the replacement of the screed 20, the counterweight assembly can adjust the center of gravity of the paver or vehicle in three ways:

[0050] The first method is to add or remove the standard counterweight 10 in the counterweight assembly. In this process, the standard counterweight 10 is hoisted by the eye bolt 14 and connected or disassembled by the connecting bolt 16.

[0051] The second method: Adjusting the center of gravity by altering the installation distance between standard counterweights, i.e., staggering the installation of different standard counterweights 10, such as... Figure 5 This increases the length of the lever arm, thereby enabling the adjustment of the center of gravity;

[0052] The third method: Remove the fixed support shaft 6. At this time, the counterweight component is disconnected from the mounting base 2. Then push the counterweight component to rotate around the rotating pin 14. The rotation angle is within 180°. This can change the width of the counterweight component and also change the center of gravity of the paver or vehicle.

[0053] After the work is completed, when the paver or vehicle needs to be moved to another location, first remove the fixed support shaft 6, that is, disconnect the counterweight assembly from the mounting seat 1 2. Then rotate the counterweight assembly backward 180° and place the base standard block 9 on the mounting seat 3 4. Insert the fastening bolt 21 from the bottom of the mounting seat 3 4, pass the fastening bolt 21 through the mounting hole 1 8 and the mounting hole 2 and lock it, thus completing the storage. At this time, the vehicle can be moved to another location.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A variable torque rotary counterweight for a paver, characterized in that, Includes mounting bracket assemblies installed on both sides of the front of the paver frame (1), and counterweight assemblies set on the mounting bracket assemblies; The mounting bracket assembly includes mounting bracket one (2), mounting bracket two (3) and mounting bracket three (4). Mounting bracket one (2), mounting bracket two (3) and mounting bracket three (4) are sequentially arranged at the front end of the paver frame (1). Mounting bracket one (2) has a shaft hole one (5) on its side wall. A detachable fixed support shaft (6) is provided in the shaft hole one (5). Mounting bracket two (3) and mounting bracket three (4) are respectively provided with positioning hole one (7) and mounting hole one (8). The counterweight assembly includes a base counterweight block (9) and multiple standard counterweight blocks (10) of the same specifications. The multiple standard counterweight blocks (10) are stacked on the upper side of the base counterweight block (9). The side wall of the base counterweight block (9) is provided with a shaft hole (11) for the fixed support shaft (6) to pass through. The base counterweight block (9) is provided with a positioning hole (12). A detachable rotating pin (14) is provided in the positioning hole (12).

2. The variable torque rotary counterweight for a paver according to claim 1, characterized in that, The lower side wall of the base counterweight (9) is also provided with a second mounting hole, and the first mounting hole (8) and the second mounting hole are connected by a fastening bolt (21).

3. A variable torque rotary counterweight for a paver according to claim 2, characterized in that, Multiple connecting screw holes (15) are provided on both the base counterweight (9) and the standard counterweight (10), and connecting bolts (16) that mate with the connecting screw holes (15) are provided between adjacent counterweights in the counterweight assembly.

4. A variable torque rotary counterweight for a paver according to claim 3, characterized in that, The standard counterweight (10) has a positioning notch (13) at one end, and both the standard counterweight (10) and the base counterweight (9) are arc-shaped at the end near the positioning hole (12).

5. A variable torque rotary counterweight for a paver according to claim 4, characterized in that, The upper surfaces of the base counterweight (9) and the standard counterweight (10) are provided with sinking grooves (17), and the connecting screw holes (15) are provided on the bottom wall of the sinking grooves (17).

6. A variable torque rotary counterweight for a paver according to claim 1, characterized in that, The standard counterweight (10) located at the top is provided with an eye bolt (18) that mates with the connecting screw hole (15).

7. A variable torque rotary counterweight for a paver according to claim 2, characterized in that, The lower side wall of the base counterweight (9) is provided with a set of movable wheels (22).

8. A variable torque rotary counterweight for a paver according to claim 1, characterized in that, The rotating pin (14) and the fixed support shaft (6) have a screw extending from their ends.

9. A variable torque rotary counterweight for a paver according to claim 1, characterized in that, The paver frame has threaded holes on both sides of the front side, and the mounting base assembly has multiple fixing holes (20). The mounting base assembly is installed on the paver frame (1) by the cooperation of mounting bolts (19), fixing holes (20) and threaded holes.

10. A method for installing a variable torque rotating counterweight for a paver, characterized in that, Using the variable torque rotating counterweight of the paver according to any one of claims 1-9 includes the following steps: Step 1: Install mounting base one (2), mounting base two (3) and mounting base three (4) on both sides of the front end of the paver frame (1); Step 2: Push the assembled counterweight assembly to the paver installation site, and then place the bottom of the counterweight assembly on the mounting surface of mounting base two (3) using auxiliary tools. Use the rotating pin (14) to pass through positioning hole two (12) and positioning hole one (7), and pre-tighten the assembly with nuts and washers. Step 3: Pass the fixed support shaft (6) through shaft hole one (5) and shaft hole two (11), and tighten the assembly with nuts and washers; then tighten the nut at the lower end of the rotating pin (14), and the installation is complete; Step 4: Recycle auxiliary tools.

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