Automatic drop hammer device for foundation bearing capacity dynamic penetration test

Abstract

The utility model discloses an automatic drop hammer device for a dynamic penetration test of foundation bearing capacity, which is characterized in that a sliding plate slides in the width direction of a mounting groove, and one end of the sliding plate in the width direction is respectively provided with a convex strip, a convex operation part and a convex column from top to bottom. The base ring is used as an integral structure foundation, and the base ring plays a role in limiting and guiding; the supporting legs are adjusted to support the base ring, so that the base ring can be approximately horizontal as much as possible; when the elastic piece is in a free state, the protruding strip, the protruding operation part and the protruding column all extend out of the outer wall of the probe rod, limitation is formed between the protruding strip and the base ring, and when the test hammer is lifted and the test hammer and the protruding column on the sliding plate are locked, the probe rod part does not rise abnormally; when the protruding operation part is pressed downwards, the protruding strip and the protruding column sink into the outer wall of the probe rod, at the moment, locking between the test hammer and the protruding column is released, and the test hammer is released.

Description

Technical Field

[0001] The utility model relates to the field of foundation bearing detection devices, in particular to an automatic drop hammer device for dynamic penetration testing of foundation bearing capacity. Background Art

[0002] The bearing capacity of the foundation is one of the important indicators for evaluating the stability and safety of the building foundation. In order to accurately evaluate the bearing capacity of the foundation, a dynamic penetration test is required. The automatic drop hammer device is one of the commonly used equipment in the dynamic penetration test. The automatic drop hammer device used to test the bearing capacity of the foundation includes automatic and manual operations. Automatic operation equipment is generally aimed at large construction sites. The lifting and release of the test hammer are automated, and its structural size is also large (up to tens of meters); the manual operation equipment, the lifting and release of the test hammer are manual, and the fixing of the probe rod is also manual.

[0003] Taking the manual bearing capacity test device as an example, two operators are generally required to complete the test process. One operator supports the probe rod and completes the counting, and the other operator completes the lifting and release of the test hammer. While more manpower is required, there are many uncontrollable factors in the test results. First, it is difficult to achieve accurate verticality of the probe rod; then, in the process of lifting the test hammer, it is easy for the height to not be the standard value. If a protrusion is set above the probe rod to achieve the standard height, it is easy to cause abnormal effects on the state of the probe rod during the process of lifting the test hammer. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic drop hammer device for foundation bearing capacity dynamic probing test, aiming to solve the problems that the existing drop hammer device requires a lot of manpower and there are many uncontrollable factors in the test results.

[0005] In order to achieve the above-mentioned object, the utility model provides an automatic drop hammer device for foundation bearing capacity dynamic penetration test, comprising:

[0006] The base ring is provided with a cylindrical channel in the thickness direction;

[0007] At least three supporting legs are hingedly arranged at intervals in the circumferential direction of the base;

[0008] A probe rod portion, comprising a probe rod and a slide plate, wherein an action ring is protruded from the middle of the length direction of the probe rod, and a mounting groove with a rectangular cross section is arranged inside the probe rod along the length direction, wherein the mounting groove is consistent with the length dimension and thickness dimension of the slide plate but has a larger width dimension, and the slide plate slides in the width direction of the mounting groove, and a protruding strip, a protruding operating portion and a protruding column are respectively arranged from top to bottom at one end of the slide plate in the width direction, and an elastic member is arranged between the other end of the slide plate in the width direction and the probe rod, wherein, when the elastic member is in a free state, the protruding strip, the protruding operating portion and the protruding column all extend out of the outer wall of the probe rod, and when the protruding operating portion is pressed down, the protruding strip and the protruding column all sink into the outer wall of the probe rod;

[0009] A test hammer, which is slidably sleeved on the probe rod and located above the action ring, and the inner wall of the test hammer is provided with a groove ring corresponding to the protruding column;

[0010] The position of the protruding column corresponds to the upper position of the test hammer, and the position of the protruding strip corresponds to the base ring.

[0011] Furthermore, the elastic member is a coil spring and is fixed by a fixing pin.

[0012] Furthermore, the probe rod portion also includes an electric push rod corresponding to the protruding operating portion, and the electric push rod is arranged on the probe rod for pushing down the protruding operating portion.

[0013] Furthermore, the angle range of the plurality of support legs in the circumferential direction of the base is 180 degrees to 200 degrees.

[0014] Furthermore, an outwardly expanding section protruding outward is provided in the middle portion of the supporting leg in the length direction, wherein the position of the outwardly expanding section corresponds to the action ring.

[0015] Furthermore, a hoisting mechanism is provided on the base ring, and the hoisting mechanism is used to drive the test hammer to rise.

[0016] Furthermore, the number of the supporting legs is three and they are arranged at 45 degree intervals.

[0017] Furthermore, a fixing plate is provided at the lower end of the supporting leg, and a fixing hole penetrates through the fixing plate.

[0018] Furthermore, a counter is provided corresponding to the supporting leg, and the counter can be detachably fixed to the supporting leg.

[0019] Furthermore, the supporting legs are made of wood.

[0020] The utility model provides an automatic drop hammer device for a dynamic penetration test of foundation bearing capacity. The base ring serves as the overall structural foundation, and the base ring plays a limiting and guiding function. The support legs are adjusted to support the base ring, so that the base ring can be as close to horizontal as possible. The slide plate slides in the width direction of the installation groove, and the locking and releasing process is realized by the sliding of the slide plate. When the elastic member is in a free state, the protruding strip, the protruding operating portion and the protruding column all extend out of the outer wall of the probe rod, and at this time, a restriction is formed between the protruding strip and the base ring. When the operator lifts the test hammer, the test hammer and the protruding column on the slide plate are locked, and the probe rod part will not rise abnormally. When the protruding operating portion is pressed downward, the protruding strip and the protruding column both sink into the outer wall of the probe rod, and at this time, the locking between the test hammer and the protruding column is disengaged, and the test hammer is released. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of an automatic drop hammer device for foundation bearing capacity dynamic penetration test according to the first embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of a base ring in an automatic drop hammer device for dynamic penetration test of foundation bearing capacity in the first embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the probe rod part of the automatic drop hammer device for dynamic penetration test of foundation bearing capacity in the first embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram (longitudinal section) of the probe rod portion of the automatic drop hammer device for dynamic penetration test of foundation bearing capacity in the first embodiment of the utility model;

[0025] Figure 5 yes Figure 4 A magnified view of part A in FIG.

[0026] Figure 6 yes Figure 4 Enlarged view of part B in .

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "one", "said", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0030] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0031] Reference Figures 1 to 6 In one embodiment of the utility model, an automatic drop hammer device for foundation bearing capacity dynamic penetration test comprises:

[0032] The base ring 100 is provided with a cylindrical channel 110 in the thickness direction;

[0033] At least three supporting legs 200 are hingedly arranged at intervals in the circumferential direction of the base ring 100;

[0034] The probe rod portion 300 includes a probe rod 310 and a slide plate 320. The probe rod 310 has an action ring 311 protruding from the middle of the length direction. The probe rod 310 is provided with a mounting groove 330 with a rectangular cross section along the length direction. The mounting groove 330 is consistent with the length and thickness of the slide plate 320 but has a larger width. The slide plate 320 slides in the width direction of the mounting groove 330. One end of the slide plate 320 in the width direction is provided with protruding strips from top to bottom. 321, a protruding operating portion 322 and a protruding column 323, an elastic member 340 is provided between the other end of the slide plate 320 in the width direction and the probe rod 310, wherein the elastic member 340 is in a free state, the protruding strip 321, the protruding operating portion 322 and the protruding column 323 all extend out of the outer wall of the probe rod 310, and when the protruding operating portion 322 is pressed down, the protruding strip 321 and the protruding column 323 all sink into the outer wall of the probe rod 310;

[0035] A test hammer 400 is slidably mounted on the probe rod 310 and is located above the action ring 311. A groove ring 410 corresponding to the protruding column 323 is provided on the inner wall of the test hammer 400;

[0036] The position of the protruding column 323 corresponds to the upper position of the test hammer 400 , and the position of the protruding strip 321 corresponds to the base ring 100 .

[0037] In the prior art, taking a manual bearing capacity testing device as an example, two operators are generally required to complete the testing process; first, it is difficult to achieve accurate verticality of the probe rod; then, in the process of lifting the test hammer, it is easy for the height to not be the standard value. If a protrusion is set above the probe rod 310 to achieve the standard height, it is easy to cause abnormal effects on the state of the probe rod during the process of lifting the test hammer.

[0038] In the present invention, when in use, the up and down directions are fixed, so a certain direction is indicated in an up and down manner. The length direction on the probe part 300 refers to the height direction of use.

[0039] A cylindrical channel 110 is penetrated in the thickness direction of the base ring 100. The base ring 100 is a structural foundation, and the subsequent probe rod part 300 is arranged through the base ring 100. During the detection process of the probe rod part 300, the base ring 100 plays a limiting and guiding function.

[0040] At least three support legs 200 are hingedly arranged at intervals in the circumferential direction of the base ring 100. During use, the support legs 200 are adjusted to support the base ring 100 so that the base ring 100 is as close to horizontal as possible.

[0041] The probe rod part 300 includes a probe rod 310 and a slide plate 320. An action ring 311 protrudes from the middle of the length direction of the probe rod 310. The test hammer 400 is slidably sleeved on the probe rod 310 and is located above the action ring 311. A groove ring 410 corresponding to the protruding column 323 is provided on the inner wall of the test hammer 400. After the test hammer is installed and the test hammer 400 is released, the test hammer 400 falls and acts on the action ring 311, thereby impacting the probe rod part 300 downward. A mounting groove 330 with a rectangular cross section is provided inside the probe rod 310 along the length direction. The mounting groove 330 has the same length and thickness dimensions as the slide plate 320, but a larger width dimension. The slide plate 320 slides in the width direction of the mounting groove 330. The locking and releasing process is achieved by sliding the slide plate 320. One end of the slide plate 320 in the width direction is provided with a protruding strip 321 , a protruding operating portion 322 and a protruding column 323 from top to bottom, respectively. An elastic member 340 is provided between the other end of the slide plate 320 in the width direction and the probe rod 310 . When the elastic member 340 is in a free state, the protruding strip 321, the protruding operating part 322 and the protruding column 323 all extend out of the outer wall of the probe rod 310. At this time, a restriction is formed between the protruding strip 321 and the base ring 100. When the operator lifts the test hammer 400, the test hammer 400 and the protruding column 323 on the slide plate 320 are locked, and the probe rod part 300 will not rise abnormally; when the protruding operating part 322 is pressed down, the protruding strip 321 and the protruding column 323 both sink into the outer wall of the probe rod 310. At this time, the lock between the test hammer 400 and the protruding column 323 is disengaged, the test hammer 400 is released, and the restriction between the protruding strip 321 and the base ring 100 is also released. The impact of the falling test hammer 400 acts on the probe rod part 300, and the probe rod part 300 completes the test process normally. Repeat the above test hammer 400 lifting and releasing process, and finally complete the foundation bearing capacity test.

[0042] It is particularly noted that, since the probe portion 300 has a continuous downward movement during operation, the length of the protruding strip 321 needs to be set to meet the downward dimension of the test process. For example, if the test standard requires a downward amount of 30 cm, the length of the protruding strip 321 is preferably 40 cm.

[0043] In summary, the base ring 100 serves as the structural basis of the whole, and the base ring 100 plays the role of limiting and guiding; adjusting the support legs 200 to support the base ring 100 can ensure that the base ring 100 is as close to horizontal as possible; the slide plate 320 slides in the width direction of the mounting groove 330, and the locking and releasing process is realized by the sliding of the slide plate 320; the elastic member 340 is in a free state, and the protruding strip 321, the protruding operating part 322 and the protruding column 323 all extend out of the probe rod 3 10, at this time, a restriction is formed between the protruding strip 321 and the base ring 100. When the operator lifts the test hammer 400, the test hammer 400 and the protruding column 323 on the slide plate 320 are locked, and the probe rod part 300 will not rise abnormally; when the protruding operating part 322 is pressed down, the protruding strip 321 and the protruding column 323 both sink into the outer wall of the probe rod 310. At this time, the locking between the test hammer 400 and the protruding column 323 is disengaged, and the test hammer 400 is released.

[0044] Reference Figures 4 to 6 In one embodiment, the elastic member 340 is a coil spring and is fixed by a fixing pin.

[0045] In this embodiment, a form of elastic member 340 is provided, and a suitable fixing method is provided.

[0046] In one embodiment, the probe rod portion 300 further includes an electric push rod corresponding to the protruding operating portion 322 , and the electric push rod is disposed on the probe rod 310 to push down the protruding operating portion 322 .

[0047] In this embodiment, an electric push rod is provided on the probe rod 310, and the protruding operating part 322 is controlled by the electric push rod. When the electric push rod pushes down the protruding operating part 322, the protruding strip 321 and the protruding column 323 both sink into the surface of the probe rod 310. At this time, the probe rod part 300 is not restricted by the base ring 100, and the test hammer 400 is released. The control method of the electric push rod can be wired or wireless, and there is no specific limitation. It should be noted that the electric push rod and the protruding operating part 322 can be separated, so that the electric push rod will not restrict the slide plate 320 from sliding outward under the action of the elastic member 340.

[0048] Reference Figure 1 In one embodiment, the plurality of support legs 200 are arranged at an angle ranging from 180 degrees to 200 degrees in the circumferential direction of the base ring 100 .

[0049] In this embodiment, the arrangement range of the support legs 200 is limited, specifically, the distribution range is 180 degrees to 200 degrees, so a range of 160 degrees to 180 degrees is reserved, and the above reserved range is used as the operating space for the user.

[0050] Reference Figure 1 In one embodiment, an outwardly bulging section 210 is provided in the middle of the length direction of the support leg 200 , wherein the position of the outwardly bulging section 210 corresponds to the action ring 311 .

[0051] In this embodiment, considering the storage process of the support leg 200, due to the positional relationship between the action ring 311 and the test hammer 400, if the support leg 200 is a straight rod-shaped structure, the support leg 200 cannot be completely retracted. An outward expansion section 210 is provided at a position corresponding to the action ring 311 in the length direction of the support leg 200. Specifically, after the support leg 200 is retracted, the action ring 311 and the test hammer 400 sleeved on the probe rod 300 are avoided by the outward expansion section 210.

[0052] In one embodiment, a hoisting mechanism is disposed on the base ring 100 , and the hoisting mechanism is used to drive the test hammer 400 to rise.

[0053] In this embodiment, automatic operation can be achieved through the hoisting mechanism, and the control work of the specific hoisting mechanism is preferably manual, so as to avoid the setting of relevant sensors and reduce the complexity of the entire device. In the specific structure, the hoisting mechanism includes a hoist, and an electromagnet is connected to the end of the hoist, and the combination and release between the electromagnet and the test hammer 400 are controlled by whether the electromagnet is energized or not. The electromagnet can be annular, so that it is sleeved on the probe rod part 300. The application scenario of the hoisting mechanism is when the mass of the test hammer 400 is large.

[0054] Reference Figure 1 In one embodiment, the number of the supporting legs 200 is three and they are arranged at 45 degree intervals.

[0055] In this embodiment, the number of three support legs 200 is appropriate and not redundant. The arrangement of the multiple support legs 200 reserves a 180-degree working space for easy operation by the user.

[0056] Reference Figure 1 In one embodiment, a fixing plate 220 is provided at the lower end of the supporting leg 200 , and a fixing hole penetrates through the fixing plate 220 .

[0057] In this embodiment, a fixing plate 220 is provided on the support leg 200, and the support leg 200 can be more stably fixed on the base surface (rammed earth foundation) through the fixing plate 220. Specifically, during the installation and fixing process, the support leg 200 is fixed on the base surface by passing a fixing nail through a fixing hole.

[0058] In one embodiment, a counter is provided corresponding to the supporting leg 200 , and the counter can be detachably fixed to the supporting leg 200 .

[0059] In this embodiment, a counter is added to meet the needs of the use process and is convenient for the operator to count. The counter can be detachably fixed to the support leg 200, and the user can choose to remove the counter or not according to the user's preference.

[0060] In one embodiment, the support legs 200 are made of wood.

[0061] In this embodiment, the wooden support leg 200 has the characteristic of being lightweight while satisfying the requirements of structural strength.

[0062] In summary, in the automatic drop hammer device for foundation bearing capacity dynamic penetration test provided by the utility model, the base ring 100 serves as the overall structural foundation, and the base ring 100 plays the function of limiting and guiding; the support legs 200 are adjusted to support the base ring 100, so that the base ring 100 can be as close to horizontal as possible; the slide plate 320 slides in the width direction of the installation groove 330, and the locking and releasing process is realized by the sliding of the slide plate 320; the elastic member 340 is in a free state, and the protruding strip 321 and the protruding operating part 322 And the protruding column 323 both extend out of the outer wall of the probe rod 310. At this time, a restriction is formed between the protruding strip 321 and the base ring 100. When the operator lifts the test hammer 400, the test hammer 400 and the protruding column 323 on the slide plate 320 are locked, and the probe rod part 300 will not rise abnormally; when the protruding operating part 322 is pressed downward, the protruding strip 321 and the protruding column 323 both sink into the outer wall of the probe rod 310. At this time, the locking between the test hammer 400 and the protruding column 323 is disengaged, and the test hammer 400 is released.

[0063] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic drop hammer device for foundation bearing capacity dynamic penetration test, characterized in that: include: The base ring (100) is provided with a cylindrical channel (110) in the thickness direction; At least three support legs (200) are hingedly arranged at intervals in the circumferential direction of the base ring (100); The probe rod portion (300) comprises a probe rod (310) and a slide plate (320). The probe rod (310) has an action ring (311) protruding from the middle of the length direction. The probe rod (310) is provided with a mounting groove (330) with a rectangular cross section along the length direction. The mounting groove (330) has a length dimension and a thickness dimension consistent with the slide plate (320) but a larger width dimension. The slide plate (320) slides in the width direction of the mounting groove (330). One end of the slide plate (320) in the width direction is provided with protruding strips (320) from top to bottom. 1), a protruding operating portion (322) and a protruding column (323), an elastic member (340) is provided between the other end of the slide plate (320) in the width direction and the probe rod (310), wherein when the elastic member (340) is in a free state, the protruding strip (321), the protruding operating portion (322) and the protruding column (323) all extend out of the outer wall of the probe rod (310), and when the protruding operating portion (322) is pressed downward, the protruding strip (321) and the protruding column (323) all sink into the outer wall of the probe rod (310); A test hammer (400) is slidably mounted on the probe rod (310) and is located above the action ring (311); a groove ring (410) corresponding to the protruding column (323) is provided on the inner wall of the test hammer (400); The position of the protruding column (323) corresponds to the upper position of the test hammer (400), and the position of the protruding strip (321) corresponds to the base ring (100).

2. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to claim 1 is characterized in that: The elastic member (340) is a coil spring and is fixed by a fixing pin.

3. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to claim 1 is characterized in that: The probe rod portion (300) further comprises an electric push rod corresponding to the protruding operating portion (322); the electric push rod is arranged on the probe rod (310) and is used to push down the protruding operating portion (322).

4. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to claim 1 is characterized in that: The angle coverage range of the plurality of support legs (200) arranged in the circumferential direction of the base ring (100) is 180 degrees to 200 degrees.

5. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to claim 1 is characterized in that: An outwardly bulging section (210) is provided at the middle portion of the support leg (200) in the length direction, wherein the position of the outwardly bulging section (210) corresponds to the action ring (311).

6. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to claim 1 is characterized in that: A hoisting mechanism is provided on the base ring (100), and the hoisting mechanism is used to drive the test hammer (400) to rise.

7. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to any one of claims 1 to 6, characterized in that: The number of the supporting legs (200) is three and they are arranged at 45 degree intervals.

8. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to any one of claims 1 to 6, characterized in that: A fixing plate (220) is provided at the lower end of the supporting leg (200), and a fixing hole penetrates through the fixing plate (220).

9. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to any one of claims 1 to 6, characterized in that: A counter is provided corresponding to the supporting leg (200), and the counter is detachably fixed to the supporting leg (200).

10. The automatic drop hammer device for foundation bearing capacity dynamic penetration test according to any one of claims 1 to 6, characterized in that: The supporting legs (200) are made of wood.

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