CN101285750B - High strain hammering device - Google Patents
High strain hammering device Download PDFInfo
- Publication number
- CN101285750B CN101285750B CN2008101051128A CN200810105112A CN101285750B CN 101285750 B CN101285750 B CN 101285750B CN 2008101051128 A CN2008101051128 A CN 2008101051128A CN 200810105112 A CN200810105112 A CN 200810105112A CN 101285750 B CN101285750 B CN 101285750B
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- high strain
- guide rail
- hammering device
- weight
- supporting leg
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a high strain hammering device, which comprises a hook and a leading bogie, wherein, the hook comprises an intermediate arm and two symmetrically arranged spoon-shaped arms; the intermediate arm is hinged with a clamped position of the two spoon-shaped arms; the leading bogie comprises a guide rail which limits the motion direction of a heavy punch, supporting legs which support a body of the leading bogie, and a pedestal which is integrated with various supporting legs into a whole; the guide rail is fixedly connected with the supporting legs; and cable wires are connected to the supporting legs, pass through the top of the leading bogie and are connected with the intermediate arm of the hook. The high strain hammering device avoids damage of a lifting device dueto instant force release, thereby being favorable for protecting the lifting device; moreover, due to arrangement of the leading bogie, the heavy punch is driven to move along the direction limited by the guide rail of the leading bogie during the lifting and falling process and is effectively guaranteed to fall on the center of a foundation pile to be measured, thereby eliminating the potential safety hazard that the heavy punch is fallen off after falling and being favorable for improving the detection safety.
Description
Technical field
The present invention relates to mechanical field, particularly relate to a kind of high strain hammering device.
Background technology
When the pile foundation engineering quality testing, adopt the foundation pile high stress drive detection method usually, foundation pile vertical compression bearing capacity and pile construction integrity in the pile foundation are detected.When this method of employing detects, must apply a hammer force to foundation pile to be detected.Fig. 1 is a prior art high strain hammering device structural representation.As shown in Figure 1, existing high strain hammering device comprises unhook 100 and weight 200, and weight 200 1 ends are suspended in the unhook 100, and the top of unhook 100 is connected with lifting appliance 300.Utilize this high strain hammering device to carry out in the actual detected process of foundation pile high stress drive detection method, lifting appliance 300 drives the unhook 100 that is hung with weight 200 and rises.After lifting appliance 300 drives the unhook 100 that is hung with weight 200 and rises to predefined height, utilize external force to make unhook 100 moments disengagement, being suspended on 200 moments of weight of breaking off relations on 100 falls, and pounds and drops on the pile crown of foundation pile to be detected 400, thereby produce hammer force.The inventor finds that there is following defective at least in prior art in realizing process of the present invention:
1, because the moment of breaking off relations throws off, and weight moment falls, that is: lifting appliance is separated power in stress following moment, causes lifting appliance to damage easily;
2, when falling, weight pounds when dropping on the foundation pile, the axis that is prone to the axis of weight and foundation pile is not on a line, thereby eccentric hammering appears, influence high stress drive and detect data, in addition, the axis of weight and the axis of foundation pile make that also weight easily falls down not on a line, have potential safety hazard.
Summary of the invention
The technical matters that the present invention solves provides a kind of high strain hammering device, in order to avoid lifting appliance because of moment the power of separating cause damage, effectively guarantee the vertical hammering foundation pile of weight, improve and detect security.
For solving the problems of the technologies described above, the invention provides a kind of high strain hammering device, comprise and breaking off relations and guide frame, arm and symmetrically arranged two spoon shape arms during described unhook comprises, described in arm locate hinged with clamping together of two spoon shape arms; Described guide frame comprises that the guide rail of restriction weight direction of motion, the supporting leg of the described guide frame main body of support are connected the base of each supporting leg with one; Described guide rail is fixedlyed connected with described supporting leg, is connected with wire rope on one of them described supporting leg, and the top that described wire rope is walked around described guide frame is connected with the middle arm of described unhook; Described high strain hammering device also comprises: the weight of hammering foundation pile to be measured, described weight is arranged between the described guide rail.
On the basis of technique scheme, the top of described guide frame can be provided with stop means, and described wire rope is connected with described middle arm by described stop means.Be positioned on the described supporting leg of same perpendicular with described stop means and can be provided with at least one spacing hole, described wire rope is fixedlyed connected with described supporting leg by described spacing hole.Wherein, described supporting leg can be channel-section steel, and described spacing hole is arranged on two facades of described channel-section steel.Described stop means can be pulley or stopper slot.Preferably, the radical of described supporting leg is 4～8.
On the basis of technique scheme, described guide rail bottom can be connected with described base; Perhaps, the distance of described guide rail bottom and described base is 0.8m～1.2m.In addition, high strain hammering device of the present invention also can comprise the weight of hammering foundation pile to be measured, and described weight is arranged between the described guide rail.Preferably, described guide rail and described weight gap are 0.3cm～1cm.
In a kind of high strain hammering device provided by the invention, be provided with and break off relations and guide frame, two spoon shape arms that break off relations are connected with the lifting appliance of outside, when lifting appliance drives the unhook be hung with weight and moves upward to predetermined altitude, can the wire rope that arm connects in the unhook be connected with guide frame by spacing hole, the unhook that lifting appliance drive afterwards is hung with weight moves downward, arm is stressed gradually in the unhook, two spoon shape arms that break off relations then subtract power gradually, be that the suffered power of lifting appliance reduces gradually, break away from closure state until two spoon shape arms that break off relations, weight is pounded, because the suffered power of lifting appliance is to reduce gradually rather than moment is separated power, thereby avoid lifting appliance because of moment the power of separating cause damage, help protecting lifting appliance; In addition, owing to be provided with guide frame, make weight move rising and pound the direction that limits along the guide frame guide rail in the process, guarantee that effectively weight pounds the center of dropping on foundation pile to be measured, pound the potential safety hazard that backwardness is fallen down thereby eliminated weight, help improving the security of detection.
Description of drawings
Fig. 1 is a prior art high strain hammering device structural representation;
Fig. 2 is a high strain hammering device example structure synoptic diagram of the present invention;
Fig. 3 is the present invention's structural representation that breaks off relations;
The spoon shape arm configuration synoptic diagram that Fig. 4 breaks off relations for the present invention.
Description of reference numerals:
Arm among the 11-; 12-spoon shape arm; The 21-guide rail;
The 22-supporting leg; The 23-base; The 221-spacing hole;
The 3-weight; The 4-wire rope; The 5-lifting appliance;
The 6-pulley; 7-foundation pile to be measured.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 2 is a high strain hammering device example structure synoptic diagram of the present invention.As shown in Figure 2, the present embodiment high strain hammering device comprises and breaking off relations and guide frame.Guide frame comprises guide rail 21, supporting leg 22 and base 23.The main body of guide frame supports by supporting leg 22.Guide rail 21 is used to limit the direction of motion of weight 3, and guide rail 21 is fixedlyed connected with supporting leg 22; Base 23 is used for supporting leg 22 is connected as one, and makes the main body of guide frame can keep balance.Be connected with wire rope 4 on the supporting leg 22, the top that wire rope 4 is walked around guide frame is connected with unhook.Fig. 3 is the present invention's structural representation that breaks off relations.The spoon shape arm configuration synoptic diagram that Fig. 4 breaks off relations for the present invention.As shown in Figure 3 and Figure 4, arm 11 and two spoon shape arms 12 during unhook comprises.Two spoon shape arms 12 are symmetrical arranged, the lower end of middle arm 11 and two spoon shape arms 12 clamp together the place hinged.In the concrete use of high strain hammering device embodiment of the present invention, two spoon shape arms 12 of unhook are connected with the lifting appliance 5 of outside respectively, and middle arm 11 is connected with guide frame by wire rope 4.When two spoon shape arms 12 that break off relations are in clamping state, can be folded with the rope sling of certain rugosity between two spoon shape arms 12, the other end of this rope sling is connected with weight 3, breaks off relations to drive weight 3 and do elevating movement together under the driving of lifting appliance 5.
On the basis of technique scheme, two steel wires that are connected with two the spoon shape arms that break off relations in the unhook motion process for fear of wire rope 4 twist together and/or in order to make wire rope 4 move along fixed-direction, can stop means be set at the top of guide frame.This stop means can be specially pulley 6.This stop means also can be stopper slot or other stop means etc.Wherein, the top of guide frame can be each guide rail (as: 4～6 guide rails) is connected as a whole steel framework, and stop means is set on steel framework; Perhaps, if each guide rail is and is wholely set, then stop means is arranged on the top of the guide rail that is wholely set etc.In addition, adopting high strain hammering device of the present invention to carry out in the high strain detecting of foundation pile, be convenient length of regulating the wire rope 4 that is connected with the middle arm 11 of unhook, can at least one spacing hole 221 be set being positioned on the supporting leg 22 of same perpendicular with stop means (as: pulley 6).Wire rope 4 passes spacing hole 221 by pulley 6 and is fixed on the supporting leg 22.Further,, can in the weight motion process, not fall down, usually the channel-section steel of supporting leg 22 for having certain thickness and rigidity in order to make guide frame firm.At this moment, regulate the length of wire rope 4 for convenience, can offer many row's spacing holes 221 respectively being positioned on two facades of a supporting leg 22 of same perpendicular with stop means (as: pulley 6), spacing hole increases gradually apart from the distance of guide frame base 23.When lifting appliance 5 driving weights rise to preset height, beat a noose on the wire rope 4 or utilizing the knot cover of on wire rope 4, beating in advance, adopt steel pipe to pass corresponding two spacing holes on two facades of supporting leg 22 and the knot cover on the wire rope 4 simultaneously, by selecting the spacing hole 221 of suitable height, thereby define the length that connects supporting leg 22 and walk around the wire rope 4 that guide frame top pulleys 6 is connected with the middle arm 11 of unhook, make this section wire rope 4 be in tensioning state, when lifting appliance 6 driving weights 3 are done descending motion, the power that acts on two the spoon shape arms 12 that break off relations can be transferred on the middle arm 11 of unhook gradually, just transfers on the wire rope 4 that is connected with middle arm 11 tensionings of breaking off relations.Preferably, in order to make the main body of guide frame firm, the quantity of supporting leg is 4～8.In addition, when being smooth surface on the surface of guide rail 21 and weight 3, guide rail 21 can be laid along the surface of weight in design process.When the surface of guide rail 21 and weight 3 is rough surface,, can between guide rail 21 and weight 3, reserve certain clearance in order to reduce the high strain hammering device of the present invention friction force between guide rail 21 and the weight 3 in use.Preferably, the gap between guide rail 21 and the weight 3 is 0.3cm～1cm.In addition, weight 3 sectional areas can be square, circular, changeable shape or other shapes.Accordingly, guide rail 21 can adopt the steel of certain intensity to be processed into and corresponding shape according to the concrete shape of weight 3, and for example: when being shaped as of weight 3 sectional areas was square, guide rail 21 can be made up of four equal angles; When weight 3 sectional areas be shaped as circle the time, guide rail 21 can be processed into arc steel plate by the steel of certain intensity, makes the shape of guide rail 21 and weight 3 surface couplings; Or the like.
Usually foundation pile to be detected has part to basset, and the diameter or the length of side of foundation pile to be detected are not fixed, in order to make high strain hammering device of the present invention can be applied in the high strain detecting of detection foundation pile of different size, the guide rail bottom can be arranged on and exceed guide frame base a distance.At this moment, the guide frame base can be provided with on the ground in order to guaranteeing the steadiness of guide frame main body, and weight moves straight down along guide frame, can pound to drop on the foundation pile to be detected.Guide rail is arranged on high reason from guide frame base certain altitude place is: the bottom of the weight that falls along guide rail need be pounded and be dropped on the foundation pile to be detected, but the size in the space that guide rail surrounds is restricted, that is: the space that surrounds of guide rail needs to be complementary with the size of weight, when the diameter of foundation pile to be detected or the length of side during greater than the diameter of weight or the length of side, if the bottom of guide rail was provided with the bottom of low or guide rail and the base of guide frame connects as one, at this moment, the certain altitude because foundation pile to be detected normally is above the ground level, then the base of guide frame can not directly set up on the ground, but need be with the base bed hedgehopping of guide frame, this will influence the steadiness of guide frame, guide frame can not the effective support weight, thereby weight also might fall down to cause danger in dropping process.Therefore, for make guide frame high strain hammering device of the present invention in use can be firm the support weight, and high strain hammering device of the present invention can be applied in the high strain detecting of foundation pile of different size, preferably, the guide rail bottom is 0.8m～1.2m with the distance of guide frame base.
High strain hammering device of the present invention in actual applications, the shape of the weight of selecting for use is unrestricted, can carry out the design of weight shape according to the shape of foundation pile to be detected, for example: the sectional area of weight can be circle, square, polygon or other shapes.Weight can be used as parts of high strain hammering device of the present invention, also can be used as an individual components, when adopting high strain hammering device of the present invention to carry out high strain detecting, adopt wire rope that weight is connected with the unhook of high strain hammering device of the present invention with certain intensity.At this moment, the quantity of the guide rail of guide frame also can design according to the shape of weight, and for example: the guide rail of guide frame can be 4～8.
The principle of work of high strain hammering device of the present invention below is described.
When adopting high strain hammering device of the present invention to carry out high strain detecting, need finish the centering debugging of high strain hammering device, promptly adjust the orientation of high strain hammering device, make the axis of weight 3 and the axis of foundation pile to be measured 7 be located along the same line.By the centering debugging, can avoid weight 3 eccentric hammerings on foundation pile 7 to be measured, and because weight 3 has the qualification of guide frame, weight 3 can not fall down and produce danger.After centering is debugged, lifting appliance 5 drives moving upward of breaking off relations by two steel wires of drawing from two spoon shape arms 12 that break off relations, the upper arm of two spoon shape arms 12 that break off relations this moment is stressed, then the underarm of two spoon shape arms 12 clamps, the rope sling that connects weight 3 is folded between two spoon shape arms 12, under two spoon shape arms 12 clamped, weight 3 moved upward with breaking off relations.After weight 3 rose to preset height (as: exceeding about 2 meters of foundation pile 7 end faces to be measured), the wire rope 4 that is connected with the middle arm 11 that breaks off relations was fixedlyed connected with guide frame by spacing hole 221.At this moment, lifting appliance 5 begins to move downward.Move downward in the process at lifting appliance 5, the power that two spoon shape arms 12 that break off relations bear reduces gradually, the power that the middle arm 11 that breaks off relations bears increases gradually, during the power of two spoon shape arms 12 of promptly breaking off relations is transferred to gradually on the arm, open, no longer clamp until the underarm of two spoon shape arms 12, at this moment, the rope sling that is connected with weight 3 is from the disengagement of breaking off relations, and weight 3 is pounded downwards along the guide rail 21 of guide frame and dropped on the foundation pile 7 to be measured, produces hammer force.
In a kind of high strain hammering device provided by the invention, be provided with and break off relations and guide frame, the middle arm that breaks off relations is connected with guide frame, two spoon shape arms that break off relations are connected with the lifting appliance of outside, when lifting appliance drives the unhook be hung with weight and moves downward, the suffered power of lifting appliance reduces gradually, break away from closure state until two spoon shape arms that break off relations, weight is pounded, because the suffered power of lifting appliance is to reduce gradually rather than moment is separated power, thereby avoid lifting appliance because of moment the power of separating cause damage, help protecting lifting appliance; In addition, owing to be provided with guide frame, make weight move rising and pound the direction that limits along the guide frame guide rail in the process, guarantee that effectively weight pounds the center of dropping on foundation pile to be measured, pound the potential safety hazard that backwardness is fallen down thereby eliminated weight, help improving the security of detection.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.
Claims (9)
1. a high strain hammering device is characterized in that, comprises breaking off relations and guide frame, arm and symmetrically arranged two spoon shape arms during described unhook comprises, described in arm locate hinged with clamping together of two spoon shape arms; Described guide frame comprises that the guide rail of restriction weight direction of motion, the supporting leg of the described guide frame main body of support are connected the base of each supporting leg with one; Described guide rail is fixedlyed connected with described supporting leg, is connected with wire rope on one of them described supporting leg, and the top that described wire rope is walked around described guide frame is connected with the middle arm of described unhook; Described high strain hammering device also comprises: the weight of hammering foundation pile to be measured, described weight is arranged between the described guide rail.
2. high strain hammering device according to claim 1 is characterized in that the top of described guide frame is provided with stop means, and described wire rope is connected with described middle arm by described stop means.
3. high strain hammering device according to claim 2, it is characterized in that, a described supporting leg that is positioned at same perpendicular with described stop means is provided with at least one spacing hole, and described wire rope is fixedlyed connected with described supporting leg by described spacing hole.
4. high strain hammering device according to claim 3 is characterized in that, described supporting leg is a channel-section steel, and described spacing hole is arranged on two facades of described channel-section steel.
5. according to the described arbitrary high strain hammering device of claim 2～4, it is characterized in that described stop means is pulley or stopper slot.
6. according to the described arbitrary high strain hammering device of claim 1～4, it is characterized in that the radical of described supporting leg is 4～8.
7. according to the described arbitrary high strain hammering device of claim 1～4, it is characterized in that described guide rail bottom is connected with described base.
8. according to the described arbitrary high strain hammering device of claim 1～4, it is characterized in that described guide rail bottom is 0.8m～1.2m with the distance of described base.
9. high strain hammering device according to claim 1 is characterized in that, described guide rail and described weight gap are 0.3cm～1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101051128A CN101285750B (en) | 2008-04-25 | 2008-04-25 | High strain hammering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101051128A CN101285750B (en) | 2008-04-25 | 2008-04-25 | High strain hammering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101285750A CN101285750A (en) | 2008-10-15 |
| CN101285750B true CN101285750B (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101051128A Expired - Fee Related CN101285750B (en) | 2008-04-25 | 2008-04-25 | High strain hammering device |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725161B (en) * | 2009-12-21 | 2011-07-27 | 中国一冶集团有限公司 | Detection force rod of low strain of foundation pile |
| CN102692307A (en) * | 2011-03-24 | 2012-09-26 | 海洋王照明科技股份有限公司 | Conduit type mechanical shock test tool equipment |
| CN102733428B (en) * | 2012-07-04 | 2015-05-06 | 天津原位物探科技有限公司 | HL type high-strain pile-trialing method hammering system |
| CN103728112A (en) * | 2013-12-04 | 2014-04-16 | 大连洁能重工机械有限公司 | Impact testing stand |
| CN106638724B (en) * | 2016-12-15 | 2020-04-24 | 中国电力科学研究院 | Hydraulic jack rising strain hammering test device |
| CN108222815A (en) * | 2018-02-07 | 2018-06-29 | 福建省沙县轻化机械设备有限公司 | A kind of energy conservation and environmental protection and safe and efficient guide type cut into a mountain rock drilling device |
| CN109706985B (en) * | 2019-02-14 | 2020-08-11 | 南通建威建设工程质量检测有限公司 | High hammer system for meeting an emergency and detecting of foundation pile |
| CN110296902A (en) * | 2019-07-03 | 2019-10-01 | 佛山市顺德区建设工程质量安全监督检测中心 | A kind of piston type high strain monitoring device |
| CN110670641B (en) * | 2019-09-18 | 2024-01-19 | 中国电建集团山东电力建设第一工程有限公司 | Safety detection device and method for deep foundation pit excavation of thermal power plant |
| CN111733900B (en) * | 2020-06-24 | 2021-11-30 | 四川冶金建筑工程质量检测有限公司 | High strain detection method for prestressed foundation pile |
| CN113605348B (en) * | 2021-07-26 | 2023-07-28 | 中铁时代建筑设计院有限公司 | Hammering device for heavy cone dynamic sounding test |
-
2008
- 2008-04-25 CN CN2008101051128A patent/CN101285750B/en not_active Expired - Fee Related
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| CN101285750A (en) | 2008-10-15 |
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Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Free format text: FORMER OWNER: GUOWANG BEIJING POWER BUILDING ACADEMY Effective date: 20091016 |
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