CN113718749A - Integral counterweight assembly of dynamic compaction machine - Google Patents
Integral counterweight assembly of dynamic compaction machine Download PDFInfo
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- CN113718749A CN113718749A CN202111044734.6A CN202111044734A CN113718749A CN 113718749 A CN113718749 A CN 113718749A CN 202111044734 A CN202111044734 A CN 202111044734A CN 113718749 A CN113718749 A CN 113718749A
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- counterweight
- dynamic compactor
- stud
- assembly
- dynamic
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention discloses an integral counterweight assembly of a dynamic compactor, which comprises a bottom counterweight, at least 2 upper counterweights and a counterweight limiting seat, wherein the bottom counterweight is provided with a stud for fixed installation, the upper surface of each upper counterweight is provided with a positioning pin, the lower surface of each upper counterweight is provided with a positioning hole which is in splicing fit with the positioning pin and used for stacking the upper counterweights in sequence, the side edge of the bottom counterweight is provided with a connecting lug plate which is fixed with the counterweight limiting seat through a bolt, and the counterweight limiting seat is used for being fixedly installed on a dynamic compactor platform. Through bottom counter weight and last balancing weight, respectively go up balancing weight, bottom counter weight and dynamic compactor counter weight platform, the connected mode of tripartite when guaranteeing the machining precision with detachable locating pin threaded connection, under long-term impact load, the locating pin warp can change, installs that the counter weight is more convenient, high-efficient.
Description
Technical Field
The invention relates to the technical field of heavy-duty machinery, in particular to an integral counterweight assembly of a dynamic compactor.
Background
In the dynamic compaction machine engineering machinery field, the existing counter weight is mostly a mixed small unit formed by pouring concrete and iron blocks, and a plurality of counter weights are combined to form a counter weight assembly in a positioning mode of welding positioning pins.
The existing counterweight block adopts a positioning method of two holes on one surface, the plane and an inner hole are used as the reference for combined positioning, and the mounting precision is ensured by adopting a mode of welding positioning pins on a large counterweight; and the overall stability of the counterweight assembly is fastened by means of threaded connection.
In the dynamic compaction field, the whole machine is subject to high-frequency repeated impact dynamic load, the installation stability of the counterweight is an undoubted key safety factor, and the combined positioning mode of the welding positioning pin has the following defects: the welding is undetachable fixed connection, and under the repeated impact dynamic load of multiple high frequencies, the positioning pin can generate micro-deformation after a long time, and the perpendicularity between the axis of the positioning pin and the surface of the counterweight is changed, so that the positioning pin is not beneficial to replacement; because the manufacture of the small counter weight units has errors, the requirement of interchangeability cannot be met when a plurality of counter weights are interchanged, and the assembly and disassembly of the combined counter weight assembly of the plurality of small unit counter weights are complex and troublesome.
Therefore, how to solve the problems of inconvenient disassembly and assembly and unstable use of the conventional counterweight assembly of the dynamic compactor is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide an integral counterweight assembly of a dynamic compactor, which solves the problems of inconvenient disassembly and assembly and unstable use of the existing counterweight assembly of the dynamic compactor by changing the connection and fixing mode among the existing counterweights.
In order to solve the technical problem, the invention provides an integral counterweight assembly of a dynamic compactor, which comprises a bottom counterweight, at least 2 upper counterweights and a counterweight limiting seat, wherein the bottom counterweight is provided with a stud for fixed installation, the upper surface of each upper counterweight is provided with a positioning pin, the lower surface of each upper counterweight is provided with a positioning hole which is in splicing fit with the positioning pin and used for stacking the upper counterweights in sequence, the side edge of the bottom counterweight is provided with a connecting lug plate which is fixed with the counterweight limiting seat through a bolt, and the counterweight limiting seat is used for being fixedly installed on a platform of the dynamic compactor.
Preferably, each go up the counter weight upper surface all is equipped with 2 at least through-holes, still including the grafting install in the welding long screw in the through-hole.
Preferably, the patch is arranged at the opening of the through hole.
Preferably, a handle is arranged at the top of the welding long screw rod, and a stop washer is arranged on the rod body of the welding long screw rod close to the top.
Preferably, one end of the stud penetrates through the bottom counterweight, and the other end of the stud is used for being connected with the dynamic compactor platform.
Preferably, one end of the stud is provided with a limit nut.
Preferably, the upper and lower edges of the side edge of the upper counterweight are symmetrically provided with clamping and mounting pieces.
Preferably, the adjacent clamping mounting pieces are clamped and fixed through clamping bolts and small nuts.
Preferably, the clamp mounting plate is disposed at a midline of the upper counterweight.
The invention provides an integral counterweight assembly of a dynamic compactor, which comprises a bottom counterweight, at least 2 upper counterweights and a counterweight limiting seat, wherein the bottom counterweight is provided with a stud for fixed installation, the upper surface of each upper counterweight is provided with a positioning pin, the lower surface of each upper counterweight is provided with a positioning hole which is in splicing fit with the positioning pin and used for stacking the upper counterweights in sequence, the side edge of the bottom counterweight is provided with a connecting piece which is fixed with the counterweight limiting seat through a bolt, and the counterweight limiting seat is used for fixed installation on the dynamic compactor. The bottom counterweight and the upper counterweight adopt a single integral counterweight machined by a full steel plate, when a counterweight assembly is installed, a positioning device is installed on a counterweight platform of the dynamic compactor, the bottom counterweight is positioned on the counterweight platform of the dynamic compactor through the positioning device, the bottom counterweight and the counterweight platform of the dynamic compactor are clamped tightly by using a stud, then a counterweight limiting seat is connected with a connecting lug plate on the bottom counterweight, a counterweight limiting pin is threaded, and then the counterweight limiting seat is welded and fixed on the platform of the dynamic compactor; after the bottom counter weight is installed, a positioning pin is installed on the bottom counter weight, the upper counter weight is positioned and installed on the bottom counter weight through the positioning pin, and the upper counter weights are positioned and installed through the positioning pins to complete installation of the counter weights; this counter weight location mounting means, when guaranteeing the machining precision with detachable locating pin threaded connection, under long-term impact load, the locating pin warp can change, installs that the counter weight is more convenient, high-efficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the clamp mounting tab shown in FIG. 1;
FIG. 3 is a schematic view of the stud construction shown in FIG. 1;
FIG. 4 is a schematic view of the long screw structure shown in FIG. 1;
FIG. 5 is a force diagram of the overall structure shown in FIG. 1;
FIG. 6 is a schematic view of the bottom counterweight illustrated in FIG. 1 under force;
fig. 7 is a schematic view of the upper weight block shown in fig. 1.
Wherein, in fig. 1-7:
the device comprises a positioning pin-1, a welding long screw rod-2, a stop washer-3, an upper balance weight-4, a limit nut-5, a washer-6, a stud-7, a bottom balance weight-8, a connecting lug plate-9, a balance weight limit seat-10, a clamping bolt-11, a small nut-12 and a clamping installation sheet-13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In a specific embodiment provided by the invention, the dynamic compaction device mainly comprises a bottom counterweight 8, at least 2 upper counterweights 4 and a counterweight limiting seat 10, wherein a stud 7 for fixing the bottom counterweight 8 is arranged on the bottom counterweight 8, a positioning pin 1 is arranged on the upper surface of each upper counterweight 4, a positioning hole which is in splicing fit with the positioning pin 1 is arranged on the lower surface of each upper counterweight 4 and used for stacking the upper counterweights 4 in sequence, a connecting lug plate 9 which is fixed with the counterweight limiting seat 10 through a bolt is arranged on the side edge of the bottom counterweight 8, and the counterweight limiting seat 10 is used for being fixedly arranged on a dynamic compaction machine platform.
Wherein, the engaging lug plate 9 of 8 sides of bottom counter weights is connected with the spacing seat 10 of counter weight and is connected in order to reach the effect of connecting bottom counter weights 8 and the spacing seat 10 of counter weight, and the stud 7 that sets up on the bottom counter weights 8 is used for being connected with dynamic compactor counter weight platform, and locating pin 1 and locating hole are used for the adjacent connection between last counter weight 4.
Specifically, in the actual application process, the upper balance weight 4 adopts a single integral balance weight machined by a full steel plate, when a balance weight assembly is installed, a positioning device is installed on a balance weight platform of the dynamic compactor, the bottom balance weight 8 is positioned on the balance weight platform of the dynamic compactor through the positioning device, the bottom balance weight 8 and the balance weight platform of the dynamic compactor are clamped tightly by using the stud 7, then the balance weight limiting seat 10 is connected with the connecting lug plate 9 on the bottom balance weight 8, a balance weight limiting pin is threaded, and then the balance weight limiting seat 10 is welded and fixed on the platform of the dynamic compactor; after the bottom counter weight 8 is installed, a positioning pin 1 is installed on the bottom counter weight 8, the upper counter weights 4 are positioned and installed on the bottom counter weight 8 through the positioning pin 1, and the upper counter weights 4 are also positioned and installed through the positioning pin 1 to complete installation of the counter weights; this counter weight location mounting means, with 1 threaded connection of detachable locating pin when guaranteeing the machining precision, under long-term impact load, locating pin 1 warp and can change, installs that the counter weight is more convenient, high-efficient.
Referring to fig. 2 to 4, fig. 2 is a schematic structural view of the clamping mounting plate shown in fig. 1; FIG. 3 is a schematic view of the stud construction shown in FIG. 1; fig. 4 is a schematic view of the long screw structure shown in fig. 1.
The counterweight connecting mode in this application can be divided into three clamping mechanisms, namely a small clamping mechanism, a middle clamping mechanism and a large clamping mechanism. Wherein, the small clamping mechanism shown in fig. 2 is designed as an anti-loose mechanism which leads the clamping installation sheet 13 to pass through the clamping bolt 11 and the small nut 12, the small clamping mechanism exists between the upper balance weights 4 and between the lowermost upper balance weight 4 and the bottom balance weight 8, wherein the clamping bolt 11 penetrates through the bottom balance weight 8 and the upper balance weight 4 from bottom to top, and the upper balance weight 4 form a reliable whole. The middle clamping mechanism shown in figure 3 is designed into a locking mechanism for the stud 7, the limiting nut 5 and the flat pad, so that a reliable whole is formed between the bottom counterweight 8 and the counterweight platform of the dynamic compaction machine. The large clamping mechanism shown in fig. 4 is designed to be a locking mechanism with a head part welded with a long welding screw rod 2 of a large nut and a stop washer 3, the whole body penetrates through an upper balance weight 4 and a bottom balance weight 8 from top to bottom, a stop lock hole is arranged on the upper balance weight 4, after the locking mechanism is installed and clamped, one end of the stop washer 3 is folded downwards to enter the stop lock hole, and the other end of the stop washer is folded upwards to coincide with the edge of the large nut.
Referring to fig. 5 to 7, fig. 5 is a force-bearing diagram of the overall structure shown in fig. 1; FIG. 6 is a schematic view of the bottom counterweight illustrated in FIG. 1 under force; fig. 7 is a schematic view of the upper weight block shown in fig. 1.
From the view of the counterweight assembly, the counterweight assembly is mainly subjected to three forces, namely gravity G of the counterweight assembly, clamping force F of the middle clamping mechanism and supporting force Fn of the platform on the counterweight assembly, impact load mainly acts in the vertical direction, the impact load enables the stud 7 on the middle clamping mechanism to have an upward movement trend, the small nut 12 generates a movement trend towards the reduction of pre-tightening force, and the platform with the upward trend enables the stud 7 to generate downward friction force to keep a balance state.
In order to form a whole between the balance weights and adapt to the impact load of the dynamic compactor better, the upper surface of each upper balance weight 4 is provided with at least 2 through holes, the dynamic compactor further comprises a welding long screw 2 inserted and installed in the through holes, the top of the welding long screw 2 is provided with a handle, and a rod body of the welding long screw 2 close to the top is provided with a stop washer 3; the welding of 2 heads of welding long screw rod has big nut, from the top down wholly runs through counter weight 4 and bottom counter weight 8, goes up counter weight 4 and has only the lockhole, and the installation presss from both sides tight back, and 3 one ends of lock washer are rolled over down and are advanced only the lockhole, and one end is rolled over and is coincided with big nut border, has guaranteed the compactness between each balancing weight.
In order to further improve the stability of connection between the bottom counterweight 8 and the dynamic compactor counterweight platform, one end of the stud 7 penetrates through the bottom counterweight 8, and the other end of the stud 7 is used for being connected with the dynamic compactor platform; the following is the overall stress analysis of the bottom counterweight 8, referring to fig. 6, the bottom counterweight 8 is mainly subjected to six forces, which are the gravity G of the bottom counterweight 8, the positive pressure F1 of each upper counterweight 4 to the bottom counterweight 8, the clamping force F2 of the middle clamping mechanism, the clamping force F3 of the small clamping mechanism, the supporting force Fn of the platform to the bottom counterweight 8 and the pulling force F4 of the welding long screw 2 to the bottom counterweight 8; the upward trend of the whole counterweight enables the upward trend platform to enable the stud bolt 7 to generate downward friction force, namely the clamping force F of the middle clamping mechanism is increased, namely the clamping force F2 of the middle clamping mechanism borne by the bottom counterweight 8 is increased, and through stress analysis, the tensile force F4 of the welding long screw rod 2 on the bottom counterweight 8 is increased, so that the counterweight forms a stress balance state and becomes a whole.
Referring to fig. 7, the upper balance weight 4 except the bottom balance weight 8 is subjected to upward reaction force as a whole, the welding long screw 2 has an upward movement trend, the upward trend can make the long nut generate a movement trend of reducing towards the pre-tightening force, and a downward friction force is generated, so that the stress analysis can be performed on the topmost upper balance weight 4 alone, and the topmost upper balance weight 4 is mainly subjected to four forces, namely, the gravity G of the upper balance weight 4, the clamping force F1 of the large clamping mechanism, the clamping force F2 of the small clamping mechanism and the supporting force Fn applied to the topmost upper balance weight 4; the upper balance weight 4 at the top has a downward extrusion tendency, the inverted clamping bolt 11 is forced to move towards the direction of increasing the pretightening force and finally fed back to the bottom balance weight 8 through the small clamping mechanism, so that the connection of the balance weight assembly is firmer, and the balance weight assembly is reliably connected when the whole machine is subjected to impact load, so that the impact is converted into the shaking of the whole machine.
Finally, it should be noted that the positioning pin 1 on the counterweight is made of Q345B, the head is tapered, the tail is provided with external threads, the middle is provided with a square surface, and the head utilizes the advantage that the taper tends to be concentric, so that the centering and micro-eccentricity during installation are facilitated. The design of the middle square surface facilitates the installation of a disassembling tool, increases the contact area and is beneficial to the installation and the disassembly of the positioning pin.
To sum up, the integral counter weight assembly of dynamic compactor that this embodiment provided mainly includes the bottom counter weight, 2 piece at least upper balance weight blocks and the spacing seat of counter weight, be equipped with the double-screw bolt that is used for fixed mounting on the bottom counter weight, each upper balance weight block upper surface all is equipped with the locating pin, the upper balance weight block lower surface is equipped with the locating hole with locating pin grafting complex for stack each upper balance weight block in proper order, and the bottom counter weight side be equipped with the spacing seat of counter weight through the fixed connection otic placode of bolt, the spacing seat of counter weight is used for fixed mounting on the dynamic compactor. The bottom counterweight and the upper counterweight adopt a single integral counterweight machined by a full steel plate, when a counterweight assembly is installed, a positioning device is installed on a counterweight platform of the dynamic compactor, the bottom counterweight is positioned on the counterweight platform of the dynamic compactor through the positioning device, the bottom counterweight and the counterweight platform of the dynamic compactor are clamped tightly by using a stud, then a counterweight limiting seat is connected with a connecting lug plate on the bottom counterweight, a counterweight limiting pin is threaded, and then the counterweight limiting seat is welded and fixed on the platform of the dynamic compactor; after the bottom counter weight is installed, a positioning pin is installed on the bottom counter weight, the upper counter weight is positioned and installed on the bottom counter weight through the positioning pin, and the upper counter weights are positioned and installed through the positioning pin to complete installation of the counter weights; this counter weight location mounting means, when guaranteeing the machining precision with detachable locating pin threaded connection, under long-term impact load, the locating pin warp can change, installs that the counter weight is more convenient, high-efficient.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111044734.6A CN113718749B (en) | 2021-09-07 | 2021-09-07 | Integral counterweight assembly of dynamic compactor |
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| CN202111044734.6A CN113718749B (en) | 2021-09-07 | 2021-09-07 | Integral counterweight assembly of dynamic compactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024109681A1 (en) * | 2022-11-23 | 2024-05-30 | 湖南三一中型起重机械有限公司 | Counterweight mounting structure and engineering machine |
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| CN112758845A (en) * | 2021-01-25 | 2021-05-07 | 三一汽车起重机械有限公司 | Counterweight displacement mechanism and operation machine |
| CN213976739U (en) * | 2020-10-29 | 2021-08-17 | 抚顺永茂建筑机械有限公司 | Box counter weight of swing arm tower crane |
| CN215977217U (en) * | 2021-09-07 | 2022-03-08 | 杭叉集团股份有限公司 | Integral counterweight assembly of dynamic compaction machine |
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2021
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| WO2024109681A1 (en) * | 2022-11-23 | 2024-05-30 | 湖南三一中型起重机械有限公司 | Counterweight mounting structure and engineering machine |
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