CN203373731U - Shearing-resistant combined tamper - Google Patents
Shearing-resistant combined tamper Download PDFInfo
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- CN203373731U CN203373731U CN201320397886.9U CN201320397886U CN203373731U CN 203373731 U CN203373731 U CN 203373731U CN 201320397886 U CN201320397886 U CN 201320397886U CN 203373731 U CN203373731 U CN 203373731U
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- hammer ram
- ram body
- tamper
- rammer
- hammer
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Abstract
The utility model relates to a shearing-resistant combined tamper which is characterized by comprising at least one first tamper body. The first tamper bodies are vertically arranged in a stacking mode. The top of the first tamper body of the topmost layer is provided with a second tamper body. The first tamper bodies and the second tamper body are connected into one through connecting bolts. Ventilation holes vertically communicated are formed in the first tamper bodies and the second tamper body respectively, the top of the second tamper body is provided with a lifting lug, the top of each first tamper body and the top of the second tamper body are respectively provided with one boss, and the bottom of each first tamper body and the bottom of the second tamper body are respectively provided with one groove. The first tamper bodies and the second tamper body, and the adjacent first tamper bodies are installed through mutual matching of the bosses and the grooves. According to the shearing-resistant combined tamper, the requirements of existing dynamic compaction construction for different energy-level hammers can be met, the problem that the connecting bolts are damaged by the shearing force due to the fact that the gravity center of the tamper deviates from the center can be solved, and the tamper is easy to assemble, replace and operate, low in cost and convenient to transport.
Description
Technical field
The utility model relates to engineering machinery field, relates in particular to a kind of shearing resistance Built-up rammer.
Background technology
Dynamic compaction machinery is that the HI high impact of utilizing the high drop of hammer ram to produce can be clamp-oned the material brute force of the better performances such as rubble, slabstone, slag in ground, form pellet pier one by one in ground, form compound foundation between pier and pier, to improve bearing capacity of foundation soil, reduce the equipment of sedimentation.Detacher is the rammer unhooking device of using on dynamic compaction machinery.Hammer ram is for improving the bearing capacity of deep foundation, the anti-weight block fallen.
In the forced ramming reinforcing foundation process, after dynamic compaction machinery is mentioned eminence by hammer ram (being no less than 20 tons), rammer unhooking, freely fall, the repeated multiple times ground of ramming, its kinetic energy forms powerful shock wave and heavily stressed in soil, gives ground with shock and vibration, the soil body is carried out to strong compaction, thus improve ground intensity, reduce compressibilty, improve the opposing vibrating liquefaction ability, Compaction variables of ground etc.Hammer ram is the vitals of dynamic compaction machinery, and according to different geological conditions and processing requirements, the strong rammer energy level of employing is also different, and this just requires job site should possess the hammer ram of multiple different quality.While is due to the foozle of hammer ram, the density unevenness of hammer ram, in the dynamic consolidation construction process, cause hammer ram after unhook, corner angle first land, the phenomenon that usually occurs the hammer ram bottom abrasion under the hammer ram impact force action huge at ground, easily cause hammer ram to damage, and this just requires the hammer ram corner angle to have impact resistance.While, needs the weight of hammer ram increasing, but is subject to the restriction of transportation clearance to large rammer energy future development along with dynamic compaction machinery, and the hammer ram width can not arbitrarily enlarge.
The hammer ram of commonly using in prior art generally is divided into mass-adjustable hammer ram and monolithic hammer ram, and the problem of its each self-structure and existence is as follows.
The mass-adjustable hammer ram generally adopts sheet material to make, as Figure 1-3, it consists of the circular hammer ram body 1 of several individual layers, hammer ram body 1 top of the superiors is provided with hanger 2, the interior air vent 3 that several up/down perforations evenly are set of each hammer ram body 1, the bottom, position that individual layer hammer ram body wears bolt 5 has bolt hole groove 4, and each individual layer hammer ram body 1 is connected as one by the bolt 5 of some large-diameter and high-strengths, and bolt 5 tops arrange nut 6.The problem that the sheet material hammer ram exists is: the sheet metal thickness of individual layer hammer ram body generally all below 100mm, if assemble 60 tons of hammer rams, needs 20 blocks of sheet materials, during installation fee; The factor that the hammer ram corner angle land is many-sided, as simultaneously due to the hammer ram foozle, hanger position fixed dimension has deviation etc., it is exactly inclined to one side causing hammer ram before unhook, the hammer ram body adopts bolt to fix besides, there is gap between adjacent individual layer hammer ram body, also easily cause hammer ram deviation of gravity center center, easily cause corner angle to land landing under resistance.The corner angle of hammer ram land, and corner angle bear larger impact forces, and the connecting bolt of hammer ram easily carries shearing force, causes damage.
The monolithic hammer ram generally adopts the casting carbon steel to make, and the casting carbon steel has the advantages such as higher intensity, plasticity and toughness.But the problem that the cast steel hammer ram exists is, in dynamic consolidation construction, different energy levels are used, and need the hammer ram of configuration Different Weight, and the monolithic hammer ram can't regulating weight, can not meet the needs of different energy levels; Cast steel hammer ram complex process, cost are high; The damage that easily is worn of the hanger of cast steel hammer ram, cause cast steel hammer ram integral body to scrap; Cast steel hammer ram size is too many, can't gas cutting, and also just can not do waste material and sell, lose larger cost.
Along with dynamic compaction machinery, to large rammer energy future development, need the weight of hammer ram increasing, but, due to the restriction that is subject to transportation clearance, the Ground Diameter of hammer ram can not infinitely increase again as required.For example: the Max. Clearance _M. of general haulage vehicle in 2 meters scopes, super wide must not be over 2.5 meters.According to this transportation code requirement, the Ground Diameter of hammer ram just must not be over 2.5 meters, if be no more than at Ground Diameter under the restriction of 2.5 meters, increase the height of hammer ram, can cause the height of hammer ram too high, the problem that can't link up with, this just need to, by auxiliary cat ladder hook, fix and auxiliary cat ladder is very difficult on-site.
The utility model content
The purpose of this utility model is to propose a kind of shearing resistance Built-up rammer used when forced ramming reinforcing foundation, it is by combination, not only can meet the different energy levels demand of hammering into shape in existing dynamic consolidation construction, and the bolt that can avoid hammer ram deviation of gravity center center to cause is subject to the problem of shearing force damage.
For achieving the above object, the utility model provides a kind of shearing resistance Built-up rammer, it is characterized in that: comprise at least one deck the first hammer ram body, each described first hammer ram body stacked on top is placed, the described first hammer ram body top of the superiors is provided with the second hammer ram body, described the first hammer ram body and described the second hammer ram body are integrally connected by connecting bolt, be provided with the air vent of up/down perforation in described the first hammer ram body and described the second hammer ram body, described the second hammer ram body top is provided with hanger, the top of described the first hammer ram body and described the second hammer ram body is provided with boss, bottom is provided with groove, between described the first hammer ram body and described the second hammer ram body, and between adjacent described the first hammer ram body all by the installation that cooperatively interacts of described boss and described groove.The shearing resistance Built-up rammer that the utility model provides adopts the mode of combination, only need split into individual layer hammer ram body during transportation and just can transport, not overweight, transports simple and convenient; The shearing impact power that hammer ram produces after landing simultaneously, groove and boss by the hammer ram body carry, contact area is large, the groove of an integral body on the hammer ram body and the boss of an integral body are easy to process, fit clearance easily guarantees, can effectively solve the hammer ram corner angle problem that the bolt that brings damages by shearing force that lands.
Further, the top of described the first hammer ram body and described the second hammer ram body is provided with the cat ladder groove, and each described cat ladder groove consistency from top to bottom forms cat ladder.Such scheme handled easily personnel climb the hammer ram hook, have solved the fixing difficulty of auxiliary cat ladder on-site, cause the problem that can't link up with.
Further, one side of described the first hammer ram body and described the second hammer ram body all cuts away one and is less than half part of hammer ram body, the side that described the first hammer ram body and described the second hammer ram body cut away and the side do not cut away are staggered installation of up and down, and the breach of formation is for cat ladder.Such scheme handled easily personnel climb the hammer ram hook, have solved the fixing difficulty of auxiliary cat ladder on-site, cause the problem that can't link up with, are conducive to make the Ground Diameter of hammer ram body to be controlled in the transport restrictions size simultaneously.
Further, described connecting bolt comprises bolt head and the screw rod be wholely set, described bolt head is positioned at the groove of undermost described the first hammer ram body bottom, described screw rod is through described the first hammer ram body and described the second hammer ram body, and the diameter that passes the end of described the second hammer ram body is less than the diameter of described other parts of screw rod, this end arranges conventional nut.It is increasing that such scheme has solved the weight that is accompanied by hammer ram, and the diameter of connecting bolt increases, and causes the problem that occurs that conventional nut can't mate.
Further, be provided with at least one backing plate on the described screw rod between described the second hammer ram body and described nut.If adopt the hammer ram of little weight on the basis of original connecting bolt, can be by reducing the quantity of hammer ram body, the quantity that then increases backing plate gets final product, therefore, can be combined into the hammer ram of Different Weight, meet the use of different energy levels in dynamic consolidation construction, need the requirement of configuration Different Weight hammer ram.
Further, on described bolt head, be provided with fixing hole, by fixing this fixing hole, can conveniently go up jack panel, solved connecting bolt and easily rotated together with nut, the problem that can't tighten.
Further, be provided with on described the second hammer ram body the lifting through hole that the lifting screw is used is installed, be provided with on described the first hammer ram body the lifting blind hole that the lifting screw is used is installed, facilitate the lifting of hammer ram.
Further, the setting position correspondence of the setting position of described lifting through hole and described lifting blind hole, facilitate the lifting of hammer ram.
Further, the radius of the described boss on described the first hammer ram body and described the second hammer ram body and the ratio range of the radius of himself are 0.4-0.8.Such scheme can guarantee that groove contacts with the boss large tracts of land, and boss is not cut off, and also guarantees that the groove of hammer ram body is not destroyed simultaneously.
Further, described the first hammer ram body and described the second hammer ram body all adopt the casting carbon steel to make.The hammer ram body has higher intensity, plasticity and toughness.
Based on technique scheme, the utility model can meet the different energy levels demand of hammering into shape in existing dynamic consolidation construction, and the connecting bolt that can avoid hammer ram deviation of gravity center center to cause is subject to the problem of shearing force damage, and to the problems such as wearing and tearing of hammer ram bottom, its assembling replacing is simple to operate simultaneously, cost is low, convenient transportation.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is mass-adjustable sheet material hammer ram structural representation of the prior art;
The A-A cross-sectional schematic that Fig. 2 is Fig. 1;
The B-B cross-sectional schematic that Fig. 3 is Fig. 1;
The embodiment master that Fig. 4 is the utility model shearing resistance Built-up rammer looks schematic diagram;
The cross-sectional schematic that Fig. 5 is Fig. 4;
Fig. 6 is that the first hammer ram body master in the utility model shearing resistance Built-up rammer embodiment looks schematic diagram;
The cross-sectional schematic that Fig. 7 is Fig. 6;
The schematic top plan view that Fig. 8 is Fig. 6;
The elevational schematic view that Fig. 9 is Fig. 6;
Figure 10 is that the second hammer ram body master in the utility model shearing resistance Built-up rammer embodiment looks schematic diagram;
The cross-sectional schematic that Figure 11 is Figure 10;
The schematic top plan view that Figure 12 is Figure 10;
Figure 13 is the schematic diagram after the utility model shearing resistance Built-up rammer reduces by the first hammer ram body;
The second hammer ram body gas cutting hanger that Figure 14 provides for the utility model becomes the schematic diagram of the first hammer ram body;
The second hammer ram body weight that Figure 15 provides for the utility model is newly welded the schematic diagram that hanger forms hammer ram;
The connecting bolt schematic diagram that Figure 16 provides for the utility model;
Figure 17 is the utility model cutting hammer ram body and is staggered installation of schematic diagram.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.
As shown in Figure 4, Figure 5, the shearing resistance Built-up rammer that the utility model provides comprises at least one first hammer ram body 7, the structure of each first hammer ram body 7 is identical, and stacked on top is placed, the first hammer ram body 7 tops of the superiors arrange the second hammer ram body 8, each first hammer ram body 7 and the second hammer ram body 8 are integrally connected by some connecting bolts 9, the bottom of connecting bolt 9 is arranged on undermost the first hammer ram body 7 bottoms, top is provided with backing plate 10 and nut 11 through the second hammer ram body 8 and this end, and assembly and disassembly is convenient.The top of the second hammer ram body 8 also is provided with hanger 12 and some lifting screws 13.
As Figure 6-9, the structure of each the first hammer ram body 7 that the utility model provides is identical, be circular configuration, its top is wholely set the boss 14 of a circle, bottom is provided with vertical air vent 16 and the some bolt holes 17 that is provided with some up/down perforations on groove 15, the first hammer ram bodies 7 of a circle.The top of the first hammer ram body 7 circumferentially also is provided with some lifting blind holes 18.The top of the first hammer ram body 7 is provided with cat ladder groove 19.Each the first hammer ram body 7 all adopts unified die casting, measure-alike, there is no dividing of precedence, and interchangeability is good.
As shown in Figure 10-12, the second hammer ram body 8 that the utility model provides is circular configuration, its top is wholely set the boss 20 of a circle, and bottom is provided with air vent 22 and the some bolt holes 23 that is provided with some up/down perforations on groove 21, the second hammer ram bodies 8 of a circle.The crown center position of the second hammer ram body 8 is provided with hanger 12, and the two ends, bottom of hanger 12 are arranged on the inside of the second hammer ram body 8, and the top of the second hammer ram body 8 circumferentially is provided with the lifting through hole 24 of some installation lifting screws 13 use.The top of the second hammer ram body 8 is provided with cat ladder groove 25.
The position of the air vent 16 arranged on the first hammer ram body 7 is identical with position and the quantity of the air vent 22 arranged on the second hammer ram body 8 with quantity; The position of the bolt hole 17 arranged on the first hammer ram body 7 is identical with position and the magnitude setting of the bolt hole 23 arranged on the second hammer ram body 8 with quantity.
The assembling the utility model provide hammer ram the time, each the first hammer ram body 7 stacked on top are placed, between two adjacent the first hammer ram bodies 7, the groove 15 that is positioned at the first hammer ram body 7 bottoms settings on upper strata cooperatively interacts with the boss 14 of the first hammer ram body 7 tops settings of its underpart, and the groove 21 of the second hammer ram body 8 bottoms settings that the boss 14 that the first hammer ram body 7 tops of the superiors arrange is placed with its top matches.Because the setting position of each the first hammer ram body 7 and bolt hole on the second hammer ram body 8 is identical, therefore the axis of the bolt hole on each layer of hammer ram body overlaps, by connecting bolt 9, through bolt hole, each the first hammer ram body 7 and the second hammer ram body 8 are integrally connected; The bottom of connecting bolt 9 is arranged in the groove 15 of orlop the first hammer ram body 7, and the top of connecting bolt 9 is through the second hammer ram body 8 and backing plate 10 and nut 11 are set in this end.The interior lifting screw 13 that arranges of the lifting through hole 24 of the second hammer ram body 8, lifting screw 13 penetrates in the lifting blind hole 18 arranged on the first hammer ram body 7 of adjacent layer.The cat ladder groove 19 of each layer the first hammer ram body 7 top setting aligns up and down substantially with the cat ladder groove 25 of the second hammer ram body 8 top settings, forms cat ladder, and the upper and lower hammer ram of handled easily personnel facilitates the hammer ram hook.
Due to the first hammer ram body 7 and the second hammer ram body 8 bottom be provided with groove, top is provided with boss, the shearing impact power produced after hammer ram lands, and groove and boss by the hammer ram body carry, contact area is large, has eliminated the damage that connecting bolt 9 carryings bring.Simultaneously on the hammer ram body, a whole groove is easy to process with the boss of an integral body, and fit clearance easily guarantees, can effectively solve the land connecting bolt 9 that brings of hammer ram corner angle and be subject to the problem of shearing force damage.
In above-described embodiment, there is larger gap between the bolt hole on the hammer ram body and connecting bolt.The hammer ram body cooperatively interacts by groove and boss, the fit clearance less.The ratio of the boss radius on each hammer ram body and hammer ram body radius, within the 0.4-0.8 scope, guarantees that groove contacts with the boss large tracts of land, and boss is not cut off, and guarantees that the groove of hammer ram body is not destroyed yet simultaneously.
As shown in figure 13, the shearing resistance hammer ram that the utility model provides adopts the mode of combination, and hammer ram consists of several individual layer first hammer ram bodies 7 and second a hammer ram body 8, if need the hammer ram that weight is larger, need to increase the quantity of the first hammer ram body 7, change longer connecting bolt 9 and get final product; If adopt the hammer ram of little weight on the basis of original connecting bolt 9, only need to reduce the quantity of the first hammer ram body 1, the quantity that then increases circular shim 10 gets final product; Therefore, the technical scheme that adopts the utility model to provide, can be combined into the hammer ram of Different Weight, realizes the weight change of hammer ram.
The frequent dry wear of the hanger of hammer ram and detacher, the hanger of hammer ram easily is worn, and traditional method is that hammer ram can only be scrapped, and the utility model provides two schemes not need to scrap hammer ram, is respectively:
1) as shown in figure 14, the utility model arranges basic identical by the structure of the structure of the first hammer ram body 7 and the second hammer ram body 8, difference is to be provided with hanger 12 on the second hammer ram body 8, when the hanger 12 on the second hammer ram body 8 damages, only hanger part gas cutting need be fallen, just can be used as the first hammer ram body 7 and use, and do not need to scrap, adopt unified casting mould to manufacture the first hammer ram body 7 and the second hammer ram body 8 simultaneously, can save die cost, also greatly save use cost.
2) as shown in figure 15, after the hanger 12 of the second hammer ram body 8 damages, weld hanger by increase and just can be assembled into hammer ram, can not use because of the damage impact of the second hammer ram body 8.
As shown in figure 16, the weight that is accompanied by hammer ram is increasing, and the diameter of connecting bolt 9 increases, and causes the situation that occurs that conventional nut can't mate.The screw rod of the utility model connecting bolt 9 is set to the form of step, and the connecting bolt 9 that the utility model provides comprises the bolt head 26 of the circle be wholely set and the screw rod 27 of column, and the diameter of screw rod 27 ends is less than the diameter of screw rod 27 other parts.The diameter of bolt head 26 is greater than the diameter of the bolt hole 17 on the first hammer ram body 7, during connection, bolt head 26 is positioned at the groove 15 that undermost the first hammer ram body 7 bottoms arrange, screw rod 27 is through each layer the first hammer ram body 7 and the second hammer ram body 8 that is positioned at the superiors, the end diameter that screw rod 27 passes the second hammer ram body 8 is less than the diameter of screw rod 27 other parts, therefore thread size can be controlled in the stock size scope, just can adopt plain nut.
In above-described embodiment, on the bolt head 26 of connecting bolt 9, can be provided with fixing hole, after the assembling hammer ram, during fastening nut, connecting bolt 9 easily rotates together with nut 11, can't tighten, by the fixing hole arranged on the bolt head 26 that is fixedly connected with bolt 9, just can go up jack panel 11, the convenient installation.
As shown in figure 17, the larger hammer ram for weight ratio, its Ground Diameter may be greater than the transport restrictions size, one side gas cutting of hammer ram body can be fallen to sub-fraction, the part cut away is much smaller than half of hammer ram body, the Ground Diameter of hammer ram body is controlled in the transport restrictions size, for example the Ground Diameter of 60 tons of hammer rams increases to 3 meters, but transport restrictions is of a size of within 2.5 meters, therefore a side of can gas cutting falling the hammer ram body, make size Control within 2.5 meters, simultaneously, the height of hammer ram reduces by 0.8 meter.Simultaneously, for the hammer ram body that cuts away a side, the side that the side that the hammer ram body cuts away and hammer ram body do not cut away is staggered installation of up and down, and the breach of formation just can be for cat ladder, the upper and lower hammer ram of convenient operation personnel, convenient hook.
In above-described embodiment, the first hammer ram body 7 that the utility model provides and the second hammer ram body 8 adopt the casting carbon steel to make.The casting carbon steel is for take carbon as main alloy element and containing the cast steel of other elements on a small quantity.The casting carbon steel has the advantages such as higher intensity, plasticity and toughness.The casting carbon steel has a variety of, consider the occasion that hammer ram uses, adopt the casting carbon steel No. 35, its toughness and plasticity belong to medium in the casting carbon steel, and toughness, intensity, plasticity all meet the demands, and have stronger toughness, hammer ram can not broken into pieces, there is certain plasticity and intensity simultaneously, guarantee that hammer ram falls repeatedly, can not produce larger distortion.Cast carbon steels No. 35, material is common simultaneously, and cost is low.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (10)
1. a shearing resistance Built-up rammer, it is characterized in that: comprise at least one deck the first hammer ram body, each described first hammer ram body stacked on top is placed, the described first hammer ram body top of the superiors is provided with the second hammer ram body, described the first hammer ram body and described the second hammer ram body are integrally connected by connecting bolt, and be provided with the air vent of up/down perforation in described the first hammer ram body and described the second hammer ram body, described the second hammer ram body top is provided with hanger, the top of described the first hammer ram body and described the second hammer ram body is provided with boss, bottom is provided with groove, between described the first hammer ram body and described the second hammer ram body, and between adjacent described the first hammer ram body all by the installation that cooperatively interacts of described boss and described groove.
2. shearing resistance Built-up rammer as claimed in claim 1, it is characterized in that: the top of described the first hammer ram body and described the second hammer ram body is provided with the cat ladder groove, and each described cat ladder groove consistency from top to bottom forms cat ladder.
3. shearing resistance Built-up rammer as claimed in claim 1, it is characterized in that: a side of described the first hammer ram body and described the second hammer ram body all cuts away one and is less than half part of hammer ram body, the side that described the first hammer ram body and described the second hammer ram body cut away and the side do not cut away are staggered installation of up and down, and the breach of formation is for cat ladder.
4. shearing resistance Built-up rammer as described as claim 1-3 any one, it is characterized in that: described connecting bolt comprises bolt head and the screw rod be wholely set, described bolt head is positioned at the groove of undermost described the first hammer ram body bottom, described screw rod is through described the first hammer ram body and described the second hammer ram body, and the diameter that passes the end of described the second hammer ram body is less than the diameter of described other parts of screw rod, this end arranges conventional nut.
5. shearing resistance Built-up rammer as claimed in claim 4, is characterized in that: on the described screw rod between described the second hammer ram body and described nut, be provided with at least one backing plate.
6. shearing resistance Built-up rammer as claimed in claim 4, is characterized in that: on described bolt head, be provided with fixing hole.
7. shearing resistance Built-up rammer as claimed in claim 1, is characterized in that: be provided with on described the second hammer ram body the lifting through hole that the lifting screw is used is installed, be provided with on described the first hammer ram body the lifting blind hole that the lifting screw is used is installed.
8. shearing resistance Built-up rammer as claimed in claim 7, is characterized in that: the setting position correspondence of the setting position of described lifting through hole and described lifting blind hole.
9. shearing resistance Built-up rammer as claimed in claim 1, it is characterized in that: the radius of the described boss on described the first hammer ram body and described the second hammer ram body and the ratio range of the radius of himself are 0.4-0.8.
10. shearing resistance Built-up rammer as claimed in claim 1 is characterized in that: described the first hammer ram body and described the second hammer ram body all adopt the casting carbon steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320397886.9U CN203373731U (en) | 2013-07-05 | 2013-07-05 | Shearing-resistant combined tamper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320397886.9U CN203373731U (en) | 2013-07-05 | 2013-07-05 | Shearing-resistant combined tamper |
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| Publication Number | Publication Date |
|---|---|
| CN203373731U true CN203373731U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320397886.9U Withdrawn - After Issue CN203373731U (en) | 2013-07-05 | 2013-07-05 | Shearing-resistant combined tamper |
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| CN (1) | CN203373731U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306265A (en) * | 2013-07-05 | 2013-09-18 | 徐工集团工程机械股份有限公司 | Anti-shear combined rammer |
| CN112012193A (en) * | 2020-09-30 | 2020-12-01 | 张会彬 | Heavy hammer tamping device |
-
2013
- 2013-07-05 CN CN201320397886.9U patent/CN203373731U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306265A (en) * | 2013-07-05 | 2013-09-18 | 徐工集团工程机械股份有限公司 | Anti-shear combined rammer |
| CN103306265B (en) * | 2013-07-05 | 2015-05-27 | 徐工集团工程机械股份有限公司 | Anti-shear combined rammer |
| CN112012193A (en) * | 2020-09-30 | 2020-12-01 | 张会彬 | Heavy hammer tamping device |
| CN112012193B (en) * | 2020-09-30 | 2022-01-28 | 山东天路重工科技有限公司 | Heavy hammer tamping device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20150527 |
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| RGAV | Abandon patent right to avoid regrant |