CN112609750A

CN112609750A - Detection hammer and detection device

Info

Publication number: CN112609750A
Application number: CN202010255221.9A
Authority: CN
Inventors: 郑迎凯; 陈远鹏; 张八芳; 谢德根; 黄超
Original assignee: Jianyan Detection Group Co ltd
Current assignee: Jianyan Detection Group Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-04-06

Abstract

The invention relates to a detection hammer and a detection device, wherein the detection hammer comprises a hammer head, a hammer handle, a shell and a limiting piece, wherein the hammer head is used for knocking a foundation pile to be detected; the hammer handle is connected with the hammer head; the shell is sleeved outside the hammer head and part of the hammer handle, and the hammer handle and the hammer head can move along the vertical direction relative to the shell; the limiting piece is accommodated in the shell and used for limiting the movement stroke of the hammer head in the shell along the vertical direction. Because the locating part can restrict the tup in the casing along vertical direction's travel, make the tup all unanimous along the maximum height that vertical direction rose in the casing, thereby can ensure that the tup strikes the foundation pile through gravitational potential energy at every turn the pulse energy that the foundation pile reflected is unanimous, so that the pulse energy that produces is strikeed the foundation pile to the detection personnel assurance tup better, thereby improved the resolution ratio of the pulse energy that the foundation pile reflected when being strikeed by the tup effectively, make the integrality testing result of foundation pile more accurate.

Description

Detection hammer and detection device

Technical Field

The invention relates to the technical field of foundation pile detection, in particular to a detection hammer and a detection device.

Background

When the hammerhead of the traditional detection hammer is used for knocking the foundation pile to be detected, the randomness of the knocking manipulation of detection personnel enables the detection personnel to difficultly master the pulse energy generated when the hammerhead knocks the foundation pile, so that the pulse energy generated when the detection personnel knocks the foundation pile through the same hammerhead at every time is also difficult to keep consistent, the mutual interference between the pulse energy of different frequencies reflected when the foundation pile is knocked by the hammerhead for several times is caused, and the accuracy of the integrity detection result of the foundation pile is greatly influenced.

Disclosure of Invention

Accordingly, it is desirable to provide a hammer and a device for detecting pulse energy generated when a detector holds a foundation pile hit by a hammer.

A test hammer, comprising:

the hammer is used for knocking the foundation pile to be detected;

the hammer handle is connected with the hammer head;

the shell is sleeved outside the hammer head and part of the hammer handle, and the hammer handle and the hammer head can move along the vertical direction relative to the shell; and

the limiting part is contained in the shell and used for limiting the movement stroke of the hammer head in the shell along the vertical direction.

In one embodiment, the limiting member is sleeved outside the hammer handle, and the limiting member can move in the vertical direction relative to the hammer handle in the housing and is locked in the housing after moving in the vertical direction for a preset distance.

In one embodiment, a plurality of first fixing holes are correspondingly arranged on two sides of the housing at intervals in the vertical direction, and the detection hammer further comprises first locking pieces which can be matched with the first fixing holes arranged at different positions on the two sides of the housing and extend into the housing to press and hold two opposite sides of the limiting piece so as to adjust and lock the relative position of the limiting piece in the housing in the vertical direction.

In one embodiment, a graduated scale for indicating the height position of each first fixing hole in the vertical direction is arranged on the outer side wall of the shell, which is provided with the first fixing holes.

In one embodiment, the hammer further comprises an elastic member, the elastic member is sleeved outside the hammer handle and elastically abuts between the limiting member and the hammer head, and the elastic member is used for providing elastic force for driving the hammer head to move downwards along the vertical direction to the hammer head.

In one embodiment, the hammer handle includes:

the first hammer rod is connected with the hammer head, and the shell is sleeved outside the hammer head and part of the first hammer rod; and

the second hammer rod is sleeved in one end, far away from the hammer head, of the first hammer rod, and the second hammer rod can stretch along the vertical direction relative to the first hammer rod and is fixed relative to the first hammer rod after stretching along the vertical direction to a preset length.

In one embodiment, a plurality of second fixing holes are formed in the outer side wall of the second hammer rod and are distributed at intervals in the vertical direction, a first auxiliary hole is formed in the outer side wall of the first hammer rod, the hammer handle further comprises a second locking member, the second locking member can penetrate through the second auxiliary hole and is matched with the second fixing holes arranged at different positions on the outer side wall of the second hammer rod, and therefore the telescopic length of the second hammer rod relative to the first hammer rod in the vertical direction can be adjusted and locked.

A detection device, comprising: the detection hammer and the fixing mechanism are used for fixing the sensor, the fixing mechanism is connected with the shell, and the sensor is used for detecting pulse energy reflected when the foundation pile is knocked by the hammer head.

In one embodiment, the fixing mechanism comprises:

a fixing assembly for fixing the sensor; and

the fixing assembly is connected with the shell through the adjusting assembly; the adjusting assembly can drive the fixing assembly to move along a first direction and/or a second direction relative to the shell, so that the placement position of the sensor relative to the foundation pile can be adjusted along the first direction and/or the second direction.

In one embodiment, the adjustment assembly comprises:

the first connecting rod is connected with the shell in a sliding mode and can move along the first direction relative to the shell; and

one end of the second connecting rod is sleeved in one end, far away from the shell, of the first connecting rod, the other end of the second connecting rod is connected with the fixing component, and the second connecting rod can stretch along the second direction relative to the first connecting rod.

Above-mentioned detection hammer, be provided with the locating part in the casing, because the locating part can restrict the tup in the casing along vertical direction's removal stroke, make the tup all be unanimous along the maximum height that vertical direction rose in the casing, thereby can ensure that the tup is all unanimous through pulse energy that the foundation pile reflected when the foundation pile was strikeed to gravitational potential energy at every turn, so that the measurement personnel hold the tup better and strike the produced pulse energy of foundation pile, thereby improved the resolution ratio of the pulse energy that the foundation pile reflected when strikeed by the tup effectively, make the integrality testing result of foundation pile more accurate.

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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of a detection apparatus;

FIG. 2 is a schematic diagram of an embodiment of a detection hammer;

FIG. 3 is a schematic diagram of an embodiment of a securing mechanism;

fig. 4 is a schematic partial structure diagram of a detection apparatus according to an embodiment.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, an embodiment of the present invention provides a detection hammer 100, where the detection hammer 100 includes a hammer head 110, a hammer handle 120, a housing 130, and a limiting member 140, where the hammer head 110 is used to strike a foundation pile to be detected; the hammer handle 120 is connected with the hammer head 110; the shell 130 is sleeved outside the hammer head 110 and a part of the hammer handle 120, and the hammer handle 120 and the hammer head 110 can move in the vertical direction relative to the shell 130; the limiting member 140 is accommodated in the housing 130; the stopper 140 serves to limit the movement stroke of the hammer head 110 in the vertical direction within the housing 130.

Above-mentioned detection hammer 100, be provided with locating part 140 in casing 130, because locating part 140 can restrict the travel of tup 110 along vertical direction in casing 130, make the tup 110 all be unanimous along the ascending maximum height of vertical direction in casing 130, thereby can ensure that the pulse energy that foundation pile reflects is unanimous when tup 110 strikes the foundation pile through gravitational potential energy every time, so that the measuring personnel grasp better the pulse energy that foundation pile was strikeed to tup 110 produced, thereby improved the resolution ratio of the pulse energy that the foundation pile reflected when being strikeed by tup 110 effectively, make the integrality testing result of foundation pile more accurate.

In an embodiment, the limiting member 140 is sleeved outside the hammer handle 120, and the limiting member 140 can move in the housing 130 along the vertical direction relative to the hammer handle 120 and is locked in the housing 130 after moving a preset distance along the vertical direction, so that the hammer head 110 can generate pulse energy with different intensities to adapt to the use requirements of integrity detection of foundation piles of different models.

In one embodiment, as shown in fig. 1, the housing 130 is provided with a plurality of first fixing holes spaced apart from each other in the vertical direction on two sides thereof, and the detection hammer 100 further includes a first locking member 150, wherein the first locking member 150 is capable of engaging with the first fixing holes provided at different positions on two sides of the housing 130 and extending into two opposite sides of the retaining member 140 held in the housing 130, so as to adjust and lock the relative position of the retaining member 140 in the housing 130 in the vertical direction.

As shown in fig. 2, in an embodiment, a scale 160 for indicating the height position of each first fixing hole in the vertical direction is disposed on the outer side wall of the housing 130 where the first fixing hole is disposed, so that an inspector can quantify the maximum height of the hammer head 110 rising in the vertical direction in the housing 130 through the height position of the first fixing hole, which is indicated by the scale 160 and is matched with the first locking member 150, thereby quantifying the pulse energy generated by the hammer head 110 each time the hammer head strikes the foundation pile.

In one embodiment, the detection hammer 100 includes a plurality of different types of hammers 110, and the hammers 110 are detachably connected to the hammer handle 120. So set up to measurement personnel carries detection hammer 100, and measurement personnel still can change the tup 110 of different models in a flexible way simultaneously, with the user demand that satisfies the integrality of the foundation pile of different models and detect.

As shown in fig. 1, in an embodiment, the detection hammer 100 further includes an elastic member 170, the elastic member 170 may be, but is not limited to, a compression spring, the elastic member 170 is sleeved outside the hammer handle 120 and elastically abuts between the stopper 140 and the hammer head 110, and the elastic member 170 is configured to provide an elastic force for driving the hammer head 110 to move downward in the vertical direction to the hammer head 110. Because the elastic member 170 is in a compressed state and stores a certain amount of elastic potential energy, when the hammer head 110 strikes the foundation pile, the elastic potential energy can act on the foundation pile together with the gravitational potential energy of the hammer head 110, so that the hammer head 110 can generate pulse energy with higher strength when striking the foundation pile, and the strength of the pulse energy reflected by the foundation pile when the hammer head 110 strikes the foundation pile can meet the strength requirement of the integrity detection of the foundation pile.

It should be pointed out that, because the hammer handle of traditional detection hammer is shorter, the integrality detection achievement of tup and then in order to accomplish the foundation pile that testing personnel need squat usually just can realize the tup to the foundation pile, when the quantity of the foundation pile that awaits measuring is more, testing personnel then need carry out repeatedly the action of getting up, squatting, will bring the consumption of a large amount of physical power for testing personnel like this, still can greatly increased testing personnel suffer from the risk of lumbar vertebrae disease simultaneously.

As shown in fig. 1 and fig. 2, in the present embodiment, the hammer handle 120 includes a first hammer rod 121 and a second hammer rod 122, the first hammer rod 121 is connected to the hammer head 110, and the housing 130 is sleeved outside the hammer head 110 and a portion of the first hammer rod 121; the second hammer rod 122 is sleeved in one end of the first hammer rod 121 far away from the hammer head 110, and the second hammer rod 122 can stretch along the vertical direction relative to the first hammer rod 121 and is relatively fixed with the first hammer rod 121 after stretching along the vertical direction by a preset length. So set up, the relative first hammer stem 121 of second hammer stem 122 of detection personnel can be adjusted according to the actual conditions of self height and lock second hammer stem 122 behind the flexible length of vertical direction, and detection personnel stands through the one end that grips second hammer stem 122 and keep away from first hammer stem 121 like this and alright realize tup 110 to the work of strikeing of foundation pile, has avoided detection personnel because of standing up repeatedly, squat a large amount of physical demands and the lumbar vertebra strain that brings. In one embodiment, an end of the first hammer rod 121 remote from the second hammer rod 122 is detachably connected to the hammer head 110.

In an embodiment, a plurality of second fixing holes 123 are formed in the outer sidewall of the second hammer rod 122 and are spaced apart in the vertical direction, a first auxiliary hole is formed in the outer sidewall of the first hammer rod 121, and the hammer handle 120 further includes a second locking member 124, where the second locking member 124 can be inserted into the first auxiliary hole and is matched with the second fixing holes 123 formed in different positions on the outer sidewall of the second hammer rod 122, so as to adjust and lock the vertical extension length of the second hammer rod 122 relative to the first hammer rod 121.

As shown in fig. 1 and fig. 2, in an embodiment, the housing 130 includes a first housing 131, a second housing 132, and a plurality of vertical rods 133, the first housing 131 is disposed opposite to the second housing 132, the vertical rods 133 are enclosed between the first housing 131 and the second housing 132 at intervals, and the first housing 131, the second housing 132, and the vertical rods 133 together enclose an auxiliary cavity 134 for accommodating the hammer head 110 and a part of the hammer handle 120. Specifically, the hammer head 110 is accommodated in the auxiliary cavity 134, one end of the first hammer rod 121, which is far away from the second hammer rod 122, penetrates through the first casing 131 and extends into the auxiliary cavity 134 to be connected with the hammer head 110, the limiting member 140 is accommodated in the auxiliary cavity 134, a plurality of first fixing holes distributed at intervals along the vertical direction are arranged on the outer side walls of the vertical rods 133 on the two sides of the casing 130, and the scale 160 is arranged on the outer side walls of the vertical rods 133 on the two sides of the casing 130.

In an embodiment, the detecting hammer 100 further includes a handle 180 for applying an external force to the second shaft 122, and the handle 180 is disposed at an end of the second shaft 122 away from the first shaft 121. In the present embodiment, the handle 180, the second weight rod 122 and the first weight rod 121 are coaxially disposed.

As shown in fig. 1, in an embodiment, the detection hammer 100 further includes a foot pad 190, the foot pad 190 is disposed on one side of the housing 130, and specifically, the foot pad 190 is disposed on one side of the second housing 132. The tester can apply an external force to the foot pad 190 through his foot to stabilize the housing 130 of the test hammer 100 on the foundation pile to be tested, so that the tester lifts the hammer head 110 above the foundation pile, and then strikes the foundation pile by the gravity of the hammer head 110 to perform the integrity test work of the foundation pile.

In an embodiment, as shown in fig. 1, the invention further provides a detection device 10, wherein the detection device 10 comprises the detection hammer 100 and a fixing mechanism 200 for fixing the sensor 20, the fixing mechanism 200 is connected with the housing 130, and the sensor 20 is used for detecting the pulse energy reflected when the foundation pile is knocked by the hammer head 110. In one embodiment, the fixing mechanism 200 is detachably connected to the housing 130 to facilitate carrying of the detecting device 10 by the detecting person.

As shown in fig. 1 and 3, in one embodiment, the fixing mechanism 200 includes a fixing component 210 and an adjusting component 220, wherein the fixing component 210 is used for fixing the sensor 20; the fixing assembly 210 is connected with the housing 130 through the adjusting assembly 220; the adjustment assembly 220 can drive the fixing assembly 210 to move in the first direction and/or the second direction relative to the housing 130, so that the placement position of the sensor 20 relative to the foundation pile can be adjusted in the first direction and/or the second direction, thereby ensuring that the sensor 20 can more accurately detect the pulse energy reflected when the foundation pile is knocked by the hammer head 110.

In this embodiment, the adjusting assembly 220 can move the fixing assembly 210 in a first direction and a second direction relative to the housing 130, so that the placement position of the sensor 20 relative to the foundation pile can be adjusted in the first direction and the second direction. In this embodiment, the first direction, the second direction and the vertical direction are perpendicular to each other.

As shown in fig. 3 and 4, further, the adjusting assembly 220 includes a first link 222 and a second link 224, the first link 222 is slidably connected with the housing 130, specifically, the first link 222 is slidably connected with the second housing 132, and the first link 222 is capable of moving in a first direction relative to the housing 130; one end of the second connecting rod 224 is sleeved in the end of the first connecting rod 222 away from the housing 130, the other end of the second connecting rod 224 is connected with the fixing component 210, and the second connecting rod 224 can extend and retract along the second direction relative to the first connecting rod 222. Specifically, the first link 222 can drive the fixing component 210 to move along the first direction through the second link 224, and the second link 224 can drive the fixing component 210 to move along the second direction, so that the placement position of the sensor 20 relative to the foundation pile can be adjusted along the first direction and the second direction.

As shown in fig. 2 and 4, in an embodiment, a sliding groove 135 is disposed on an outer side wall of the housing 130, specifically, the sliding groove 135 is disposed on an outer side wall of the second housing 132, the sliding groove 135 extends along a first direction, the adjusting assembly 220 further includes a connecting member 226, the connecting member 226 is slidably disposed in the sliding groove 135 and is connected to an end of the first connecting rod 222 away from the second connecting rod 224, so as to achieve a sliding connection between the first connecting rod 222 and the housing 130.

As shown in fig. 3 and 4, in an embodiment, the fixing assembly 210 includes a housing 211 and a fastener 212, the housing 211 is connected to an end of the second link 224 away from the first link 222, the housing 211 has an inner cavity 213 for receiving the sensor 20, a fastening hole 214 is provided on a sidewall of the housing 211, and the fastener 212 can be matched with the fastening hole 214 and extend into the inner cavity 213 to press and hold the sensor 20, so as to fix the sensor 20 in the inner cavity 213 of the housing 211. Specifically, the fastener 212 is threadedly engaged with the fastening hole 214.

Further, the fastening holes 214 and the fastening members 212 are respectively provided in a plurality of numbers, the fastening holes 214 are respectively disposed around the housing 211, and the fastening members 212 are respectively in one-to-one correspondence with the fastening holes 214 to improve the fixing stability of the sensor 20 in the inner cavity 213 of the housing 211.

As shown in fig. 3, in the present embodiment, the housing 211 includes a first sidewall 215, a second sidewall 216, a third sidewall 217 and a fourth sidewall 218, the first sidewall 215 is disposed opposite to the second sidewall 216, the third sidewall 217 is disposed opposite to the fourth sidewall 218, the third sidewall 217 and the fourth sidewall 218 are disposed between the first sidewall 215 and the second sidewall 216, the first sidewall 215, the second sidewall 216, the third sidewall 217 and the fourth sidewall 218 enclose an inner cavity 213, the first sidewall 215 and an end of the second link 224 of the housing 211 away from the first link 222 are connected, the fastening holes 212 and the fastening holes 214 include three fastening holes 214, the three fastening holes 214 are respectively disposed on the second sidewall 216, the third sidewall 217 and the fourth sidewall 218 of the housing 211, the three fastening holes 212 can respectively cooperate with the three fastening holes 214 and press the first side and the second side opposite to the sensor 20 and the third fastening holes disposed adjacent to the first side and the second side, thereby securing the sensor 20 within the interior 213 of the housing 211.

In an embodiment, the fixing assembly 210 further includes an elastic clip 219, the elastic clip 219 is received in the inner cavity 213 of the housing 211 and is connected to one end of the fastening element 212, and the elastic clip 219 is used for elastically supporting the sensor 20, so as to prevent the fastening element 212 from directly and rigidly pressing the sensor 20 to damage the sensor 20. In the present embodiment, the elastic clips 219 include a plurality of elastic clips 219, and the plurality of elastic clips 219 correspond to the plurality of fasteners 212 one to one, respectively.

As shown in fig. 1, in an embodiment, the detecting device 10 further includes a toggle assembly 300 for driving the fixing assembly 210 to move relative to the housing 130, the toggle assembly 300 includes a third link 310 and a fourth link 320, the third link 310 is disposed on the fixing assembly 210; the fourth link 320 is sleeved in one end of the third link 310 far away from the fixing component 210, and the fourth link 320 can extend and contract along the vertical direction relative to the third link 310 and is relatively fixed with the third link 310 after extending and contracting along the vertical direction by a preset length.

So set up, the relative third connecting rod 310 of fourth connecting rod 320 can be adjusted according to the actual conditions of self height to locking fourth connecting rod 320 behind the flexible length of vertical direction, detection personnel is through exerting the effort to the one end that third connecting rod 310 was kept away from to fourth connecting rod 320 like this and standing alright realize the relative casing 130's of fixed subassembly 210 removal, and then realize the adjustment of the position of placing of sensor 20 on the foundation pile, avoided detection personnel because of standing up repeatedly, squat a large amount of physical demands and the lumbar vertebra strain that brings.

In the embodiment, the third link 310 is disposed on the housing 211 of the fixing assembly 210; the fourth link 320 is sleeved in an end of the third link 310 away from the housing 211 of the fixing assembly 210.

As shown in fig. 1, in an embodiment, a plurality of third fixing holes 322 are formed on an outer side wall of the fourth link 320 and are distributed at intervals in a vertical direction, a second auxiliary hole is formed on an outer side wall of the third link 310, and the toggle assembly 300 further includes a third locking member 330, wherein the third locking member 330 can be inserted into the second auxiliary hole and is matched with the third fixing holes 322 formed at different positions on the outer side wall of the fourth link 320 to adjust and lock a vertical telescopic length of the fourth link 320 relative to the third link 310.

In an embodiment, the detecting device 10 further includes a handle 400 for applying an external force to the fourth link 320, and the handle 400 is disposed at an end of the fourth link 320 far from the third link 310. In the present embodiment, the hand grip 400, the fourth link 320 and the third link 310 are coaxially disposed.

In one embodiment, as shown in fig. 1, the detecting device 10 further includes a signal receiver 500, the signal receiver 500 is electrically connected to the sensor 20, and the signal receiver 500 is used for receiving the pulse energy reflected when the foundation pile is knocked by the hammer head 110, which is detected by the sensor 20. Further, the above-mentioned detection device 10 further includes a data line 600, the signal receiver 500 is connected to the sensor 20 through the data line 600, specifically, the data line 600 is partially wound around the third link 310, and an end of the data line 600 far from the signal receiver 500 extends into the inner cavity 213 of the housing 211 and is connected to the sensor 20.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A test hammer, comprising:

the hammer is used for knocking the foundation pile to be detected;

the hammer handle is connected with the hammer head;

2. The detection hammer according to claim 1, wherein the stopper is sleeved outside the hammer handle, and the stopper is capable of moving in a vertical direction relative to the hammer handle in the housing and being locked in the housing after moving in the vertical direction by a predetermined distance.

3. The hammer of claim 2, wherein the housing has a plurality of first fixing holes spaced apart from each other in the vertical direction on both sides of the housing, and the hammer further comprises a first locking member capable of engaging with the first fixing holes disposed at different positions on both sides of the housing and protruding into the housing to press and hold opposite sides of the stopper so as to adjust and lock the relative positions of the stopper in the housing in the vertical direction.

4. The detection hammer according to claim 3, wherein a scale for indicating a height position of each of the first fixing holes in a vertical direction is provided on an outer side wall of the housing where the first fixing hole is provided.

5. The detection hammer according to claim 1, further comprising an elastic member, wherein the elastic member is sleeved outside the hammer handle and elastically abuts between the stopper and the hammer head, and the elastic member is configured to provide an elastic force for driving the hammer head to move downward in the vertical direction to the hammer head.

6. The detection hammer of claim 1, wherein the hammer handle comprises:

7. The detection hammer as claimed in claim 6, wherein a plurality of second fixing holes are formed in the outer side wall of the second hammer rod, the second fixing holes are vertically spaced, a first auxiliary hole is formed in the outer side wall of the first hammer rod, the hammer handle further comprises a second locking member, and the second locking member can be inserted into the second auxiliary hole and can be matched with the second fixing holes formed in different positions of the outer side wall of the second hammer rod, so as to adjust and lock the telescopic length of the second hammer rod relative to the first hammer rod in the vertical direction.

8. A detection device, comprising: the test hammer of any one of claims 1 to 7, and a securing mechanism for securing a sensor, the securing mechanism being connected to the housing, the sensor being for detecting pulse energy reflected when the foundation pile is struck by the hammer head.

9. The detection device of claim 8, wherein the securing mechanism comprises:

a fixing assembly for fixing the sensor; and

10. The detection device of claim 9, wherein the adjustment assembly comprises: