CN214784260U - Force hammer for pile foundation low strain detection - Google Patents
Force hammer for pile foundation low strain detection Download PDFInfo
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- CN214784260U CN214784260U CN202121199704.8U CN202121199704U CN214784260U CN 214784260 U CN214784260 U CN 214784260U CN 202121199704 U CN202121199704 U CN 202121199704U CN 214784260 U CN214784260 U CN 214784260U
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- hammer
- hammer body
- groove
- lug plate
- mounting
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Abstract
The application relates to a force hammer for pile foundation low strain detection, which comprises a hammer body, a nylon tap arranged at the bottom of the hammer body and a holding rod fixed in the middle of the hammer body; the end face of the top of the hammer body is provided with a containing groove, and a counterweight strip is arranged in the containing groove; the end face of the top of the hammer body is provided with a top cover for covering the containing groove, one end of the top cover is rotatably connected to the top of the hammer body, and the other end of the top cover is provided with a locking assembly for connecting with the hammer body; the end surface of the counterweight strip close to the top cover is abutted against the top cover. The containing grooves are provided with a plurality of containing grooves, and the containing grooves are arranged at intervals. The locking assembly comprises a first lug plate fixed on the top cover, a second lug plate fixed on one side, close to the first lug plate, of the top of the hammer body and a locking bolt penetrating through the first lug plate and the second lug plate. The application has the effect of freely giving the weight to the hammer body.
Description
Technical Field
The application relates to the field of pile foundation detection equipment, in particular to a force hammer for pile foundation low-strain detection.
Background
After the pile foundation is poured, the structural integrity of the pile body of each foundation pile needs to be detected, and a low-strain reflection wave method is generally adopted for detection.
The low strain reflection wave method is that the pile top is knocked by a hammer, the generated stress wave is transmitted downwards, when a change interface is met, a part of the stress wave is reflected and transmitted upwards, a sensor arranged on the pile top is used for receiving the reflected wave signal reflected from the inside of the pile body, a pile measuring instrument is used for carrying out signal amplification and other processing to obtain a signal time course curve, and the integrity of the foundation pile structure can be judged by analyzing the morphological characteristics of the curve.
In view of the above-mentioned related art, when the diameter and length of the foundation pile are long, the stress wave gradually attenuates after the force hammer strikes the pile top and cannot reach the bottom of the foundation pile, and the inventor thinks that the defect that the stress wave cannot be transmitted to the bottom of the foundation pile due to the insufficient weight of the force hammer is existed because the force hammer is of a fixed weight.
SUMMERY OF THE UTILITY MODEL
In order to be able to freely increase the weight of the hammer of the force hammer, the application provides a force hammer for pile foundation low strain detection.
The application provides a force hammer for low strain detection of pile foundation adopts following technical scheme:
a force hammer for pile foundation low strain detection comprises a hammer body, a nylon tap arranged at the bottom of the hammer body and a holding rod fixed in the middle of the hammer body; an accommodating groove is formed in the end face of the top of the hammer body, and a counterweight strip is arranged in the accommodating groove; the end face of the top of the hammer body is provided with a top cover for covering the accommodating groove, one end of the top cover is rotatably connected to the top of the hammer body, and the other end of the top cover is provided with a locking assembly for connecting with the hammer body; the end face of the counterweight strip close to the top cover is abutted to the top cover.
Through adopting above-mentioned technical scheme, through placing the counter weight strip toward the storage tank in to increase the hammer weight of hammer block, and then the stress wave that produces when reinforcing power hammer hammering foundation pile top.
Optionally, the locking assembly includes a first ear plate fixed to the top cover, a second ear plate fixed to a side of the top of the hammer body close to the first ear plate, and a locking bolt passing through the first ear plate and the second ear plate.
Through adopting above-mentioned technical scheme, through the locking bolt for the position relation locking of top cap and hammer block, thereby the counter weight strip is comparatively steadily located the storage tank when making the hammer block hammering.
Optionally, a cushion layer is arranged between the top cover and the end face of the top of the hammer body, and the cushion layer covers the notch of the accommodating groove.
By adopting the technical scheme, when the top cover covers the end face of the top of the hammer body, the cushion layer is extruded, and the position of the cushion layer corresponding to the accommodating groove is convex, so that the counter weight strip is tightly abutted to the cushion layer, and the condition that the counter weight strip moves in the accommodating groove is reduced.
Optionally, the accommodating grooves are provided in plurality, and the accommodating grooves are arranged at intervals.
Through adopting above-mentioned technical scheme, can add the counter weight strip in to the storage tank according to actual conditions to the foundation pile of adaptation different specifications.
Optionally, a mounting groove communicated with the end face of the bottom of the hammer body is formed in the side face of one side of the bottom of the hammer body, a mounting block corresponding to the mounting groove is arranged in the mounting groove, and the mounting block is fixedly connected with the bottom of the hammer body through a fixing assembly; the nylon head is characterized in that the top end face of the nylon head is provided with a mounting piece, the mounting piece comprises a connecting block arranged on the top end face of the nylon head and a disc horizontally arranged on the connecting block, and the disc is larger than the connecting block; the mounting structure is characterized in that a first groove used for placing a half disc and a half connecting block is formed in the groove bottom of the mounting groove, a second groove used for placing another half disc and the other half connecting block is formed in the side face, close to the first groove, of the mounting block, and the first groove and the second groove form a cavity used for placing the disc and the connecting block.
Through adopting above-mentioned technical scheme, can dismantle the setting with the nylon head, when meetting great foundation pile, change bigger buddhist nun tap to increase buddhist nun tap and the area of contact at foundation pile top, thereby make the stress wave energy that produces obtain the whole response of foundation pile.
Optionally, the fixing assembly includes a third lug plate fixed on the side wall of the bottom of the hammer body, a fourth lug plate fixed on the side wall of the mounting block, and a fixing bolt for connecting the third lug plate and the fourth lug plate.
Through adopting above-mentioned technical scheme, be convenient for installation and dismantlement installation piece to realize being convenient for change the effect of buddhist nun tap.
Optionally, a horizontally arranged limiting rod is arranged at the bottom of the mounting groove, the limiting rod penetrates through the mounting block, and the mounting block is in sliding fit along the length direction of the limiting rod; one end of the limiting rod, which is far away from the hammer body, is provided with a wafer, and the wafer is larger than the section of the limiting rod.
Through adopting above-mentioned technical scheme, the installation piece slides along the gag lever post, can make the installation piece not deviate from the mounting groove to reduce the condition that the installation piece lost.
Optionally, the one end that the hammer block was kept away from to the holding rod is equipped with the skid resistant course, one side that the holding rod middle part is close to the top cap is equipped with the lug that is used for placing the thumb, the sunken cambered surface that is of one side top that the lug deviates from the hammer block.
Through adopting above-mentioned technical scheme, the skid resistant course is convenient for operating personnel to gripping of holding rod, and the lug is convenient for operating personnel to the application of force of holding rod.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through placing the counter weight strip in the past storage tank to increase hammer block hammer weight, thereby produce bigger impact energy when making the hammer block strike the foundation pile top.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a cross-sectional view of an embodiment of the present application;
FIG. 3 is an enlarged view of the structure of portion A of FIG. 1;
fig. 4 is an enlarged view of the structure of the portion B in fig. 1.
Description of reference numerals: 1. a hammer body; 11. a containing groove; 12. a weight strip; 13. mounting grooves; 131. a first groove; 14. mounting blocks; 141. a second groove; 2. a nylon tap; 3. a holding rod; 31. an anti-slip layer; 32. a bump; 4. a top cover; 5. a locking assembly; 51. a first ear plate; 52. a second ear panel; 53. a locking bolt; 6. a cushion layer; 7. a mounting member; 71. connecting blocks; 72. a disc; 8. a fixing assembly; 81. a third ear panel; 82. a fourth ear panel; 83. fixing the bolt; 9. a limiting rod; 91. and (4) carrying out wafer forming.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a power hammer for pile foundation low strain detection. Referring to fig. 1, the hammer includes a hammer body 1 vertically arranged, a top cover 4 rotatably connected to the top of the hammer body 1, a nylon head 2 arranged at the bottom of the hammer body 1, and a holding rod 3 horizontally fixed at the middle of the hammer body 1. The weight of the hammer body 1 and the drop hammer speed determine the energy, the energy is moderate when the top of the foundation pile is knocked, and when the foundation pile with the pile diameter larger than 800mm and the degree larger than 80m is encountered, the energy generated during knocking needs to be increased so that the stress wave generated by knocking can be transmitted to the bottom of the base and reflected back.
The one end that the hammer block 1 was kept away from to holding rod 3 is equipped with skid resistant course 31 to the top at holding rod 3 middle part is equipped with lug 32, and the one side top that lug 32 deviates from hammer block 1 is sunken to the cambered surface, when operating personnel's hand held in skid resistant course 31, can place the thumb on the cambered surface. Through lug 32 and skid resistant course 31, increase operating personnel's controllability to holding rod 3, be convenient for operating personnel accelerates the hammer speed that falls.
Referring to fig. 1 and 2, a plurality of accommodating grooves 11 are formed in the end face of the top of the hammer body 1, a counterweight strip 12 is disposed in the accommodating groove 11, the counterweight strip 12 is adapted to the accommodating groove 11, and the top of the counterweight strip 12 is flush with the notch of the accommodating groove 11. A plurality of counterweight strips 12 can be put according to actual requirements, so that the weight of the hammer body 1 reaches proper weight.
The one end of top cap 4 is rotated and is connected in 1 top one side of hammer block, and the top cap 4 other end is fixed in 1 top opposite side of hammer block through locking Assembly 5, and when top cap 4 was fixed with hammer block 1 through locking Assembly 5, the bottom surface butt of top cap 4 was on 1 top end face of hammer block. Because there is wearing and tearing after the counter weight strip 12 live time is longer, the length of counter weight strip 12 may shorten, in order to make counter weight strip 12 after wearing and tearing also can place steadily in storage tank 11, be equipped with bed course 6 between top cap 4 and hammer block 1 top end face, bed course 6 has certain elasticity, bed course 6 adopts rubber to make in this embodiment, bed course 6 is extruded between top cap 4 and hammer block 1 top end face, the position that bed course 6 corresponds storage tank 11 then can be protruding, protruding position supports tightly in counter weight strip 12, make counter weight strip 12 place steadily in storage tank 11.
Referring to fig. 1 and 3, the locking assembly 5 includes a first lug plate 51 horizontally fixed on the side wall of the top cover 4, a second lug plate 52 horizontally fixed on the side wall of the top of the hammer body 1, and a locking bolt 53 passing through the first lug plate 51 and the second lug plate 52, wherein the positions of the first lug plate 51 and the second lug plate 52 correspond.
With reference to fig. 1 and 2, the top end face of the nylon tap 2 is provided with a mounting member 7, the mounting member 7 includes a connecting block 71 fixed on the top end face of the nylon tap 2 and a disc 72 horizontally fixed on the top of the connecting block 71, the connecting block 71 is cylindrical, the radius of the disc 72 is greater than the section radius of the connecting block 71, and the connecting block 71 and the disc 72 are both arranged coaxially with the nylon head 2.
The side face of one side of the bottom of the hammer body 1 is provided with a mounting groove 13 communicated with the end face of the bottom of the hammer body 1, the mounting groove 13 is semicircular when viewed from the end face of the bottom of the hammer body 1, a mounting block 14 corresponding to the mounting groove 13 in shape is arranged on the mounting groove 13, and the mounting block 14 is positioned in the mounting groove 13. The tank bottom of mounting groove 13 is equipped with the gag lever post 9 that the level is fixed in the tank bottom of mounting groove 13, and gag lever post 9 wears to locate installation piece 14, and installation piece 14 is along gag lever post 9 length direction sliding fit. The end of the limiting rod 9, which is far away from the hammer body 1, is provided with the wafer 91, and the wafer 91 is larger than the cross section of the limiting rod 9, so that the mounting block 14 cannot slide out from the end, which is far away from the hammer body 1, of the limiting rod 9, and the loss of the mounting block 14 is reduced. The disc 91 is spaced from the mounting block 14 so that the mounting block 14 can move a distance along the stop rod 9.
The bottom of the mounting groove 13 is provided with a first groove 131 for placing a half of the connecting block 71 and a half of the disc 72, the end surface of the mounting block 14 close to the first groove 131 is provided with a second groove 141 for placing the other half of the connecting block 71 and the other half of the disc 72, and when the mounting block 14 is positioned in the mounting groove 13, the first groove 131 and the second groove 141 form a cavity capable of accommodating the connecting block 71 and the disc 72.
The mounting block 14 is moved in the direction away from the hammer body 1, the connecting block 71 and the disc 72 are placed in the first groove 131, the mounting block 14 is moved in the direction of the hammer body 1, the connecting block 71 and the other half of the disc 72 are located in the second groove 141, and therefore the nylon head 2 is mounted, and the mounting block 14 is fixedly connected with the bottom of the hammer body 1 through the fixing assembly 8.
With reference to fig. 1 and 4, the fixing assembly 8 includes a third ear plate 81 vertically fixed to the side wall of the hammer body 1, a fourth ear plate 82 vertically fixed to the side wall of the mounting block 14, and a fixing bolt 83 penetrating through the third ear plate 81 and the fourth ear plate 82, the third ear plate 81 is fixed to the side wall of the hammer body 1 near the bottom of the mounting groove 13, and the fourth ear plate 82 is fixed to the side wall of the mounting block 14 near the bottom of the mounting groove 13. The third lug plate 81 and the fourth lug plate 82 are fixedly connected by a fixing bolt 83.
The nylon tap 2 is detachably connected to the bottom of the hammer body 1, and when a foundation pile with a larger specification is met, the larger nylon tap 2 can be replaced to increase the contact area between the nylon tap 2 and the top of the foundation pile.
The implementation principle of the embodiment of the application is as follows: according to the actual situation, a corresponding number of weight bars 12 are added into the accommodating groove 11, and the first ear plate 51 and the second ear plate 52 are fixed by the locking bolt 53. The mounting block 14 is moved in the direction away from the hammer body 1, the appropriate nylon head 2 is selected, the connecting block 71 and the disc 72 are placed in the first groove 131, the mounting block 14 is moved in the direction close to the hammer body 1, and the third lug plate 81 and the fourth lug plate 82 are fixed through the fixing bolt 83.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a power hammer for pile foundation low strain detection which characterized in that: comprises a hammer body (1), a nylon tap (2) arranged at the bottom of the hammer body (1) and a holding rod (3) fixed at the middle part of the hammer body (1); an accommodating groove (11) is formed in the end face of the top of the hammer body (1), and a counterweight strip (12) is arranged in the accommodating groove (11); the top end face of the top of the hammer body (1) is provided with a top cover (4) used for covering the accommodating groove (11), one end of the top cover (4) is rotatably connected to the top of the hammer body (1), and the other end of the top cover (4) is provided with a locking assembly (5) used for being connected with the hammer body (1); the end face, close to the top cover (4), of the counterweight strip (12) abuts against the top cover (4).
2. The force hammer for pile foundation low strain detection according to claim 1, wherein: the locking assembly (5) comprises a first lug plate (51) fixed on the top cover (4), a second lug plate (52) fixed on one side, close to the first lug plate (51), of the top of the hammer body (1) and a locking bolt (53) penetrating through the first lug plate (51) and the second lug plate (52).
3. The force hammer for pile foundation low strain detection according to claim 2, wherein: and a cushion layer (6) is arranged between the top cover (4) and the top end face of the hammer body (1), and the cushion layer (6) covers the notch of the accommodating groove (11).
4. The force hammer for pile foundation low strain detection according to claim 3, wherein: the accommodating grooves (11) are arranged in a plurality, and the accommodating grooves (11) are arranged at intervals.
5. The force hammer for pile foundation low strain detection according to claim 1, wherein: the side surface of one side of the bottom of the hammer body (1) is provided with a mounting groove (13) communicated with the end surface of the bottom of the hammer body (1), a mounting block (14) corresponding to the mounting groove (13) is arranged in the mounting groove (13), and the mounting block (14) is fixedly connected with the bottom of the hammer body (1) through a fixing component (8); the top end face of the nylon tap (2) is provided with a mounting piece (7), the mounting piece (7) comprises a connecting block (71) arranged on the top end face of the nylon tap (2) and a disc (72) horizontally arranged on the connecting block (71), and the disc (72) is larger than the connecting block (71); the mounting structure is characterized in that a first groove (131) used for placing a half of disc (72) and a half of connecting block (71) is formed in the groove bottom of the mounting groove (13), a second groove (141) used for placing the other half of disc (72) and the other half of connecting block (71) is formed in the side face, close to the first groove (131), of the mounting block (14), and the first groove (131) and the second groove (141) form a cavity used for placing the disc (72) and the connecting block (71).
6. The force hammer for pile foundation low strain detection according to claim 5, wherein: the fixing assembly (8) comprises a third lug plate (81) fixed on the side wall of the bottom of the hammer body (1), a fourth lug plate (82) fixed on the side wall of the mounting block (14) and a fixing bolt (83) used for connecting the third lug plate (81) and the fourth lug plate (82).
7. The force hammer for pile foundation low strain detection according to claim 6, wherein: a horizontally arranged limiting rod (9) is arranged at the bottom of the mounting groove (13), the limiting rod (9) penetrates through the mounting block (14), and the mounting block (14) is in sliding fit along the length direction of the limiting rod (9); one end of the limiting rod (9) departing from the hammer body (1) is provided with a wafer (91), and the wafer (91) is larger than the cross section of the limiting rod (9).
8. The force hammer for pile foundation low strain detection according to claim 1, wherein: the one end that hammer block (1) was kept away from in holding rod (3) is equipped with skid resistant course (31), one side that holding rod (3) middle part is close to top cap (4) is equipped with lug (32) that are used for placing the thumb, the sunken cambered surface that is of one side top that lug (32) deviate from hammer block (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199704.8U CN214784260U (en) | 2021-05-31 | 2021-05-31 | Force hammer for pile foundation low strain detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121199704.8U CN214784260U (en) | 2021-05-31 | 2021-05-31 | Force hammer for pile foundation low strain detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214784260U true CN214784260U (en) | 2021-11-19 |
Family
ID=78699506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121199704.8U Expired - Fee Related CN214784260U (en) | 2021-05-31 | 2021-05-31 | Force hammer for pile foundation low strain detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214784260U (en) |
-
2021
- 2021-05-31 CN CN202121199704.8U patent/CN214784260U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211119 |