Foundation bearing capacity detection device

Abstract

The utility model relates to the technical field of buildings, in particular to a foundation bearing capacity detection device which comprises a frame and a drill rod assembly arranged on the bottom face of the frame in a penetrating mode, a drop hammer assembly is arranged above the drill rod assembly, and a lifting mechanism used for lifting the drop hammer assembly is arranged at the top of the frame. The hoisting mechanism comprises a winding drum fixed to the top of the frame and a steel wire rope wound around the winding drum, a box body is fixedly arranged at the end of the steel wire rope, and a connecting unit used for hoisting the drop hammer assembly is arranged on the box body; a separating unit used for driving the connecting unit to rotate so as to automatically separate the drop hammer assembly is arranged on the side of the connecting unit. By arranging the connecting unit and the separating unit, the connecting unit and the drop hammer assembly can be conveniently connected, only the connecting cylinder needs to be rotated, the heavy drop hammer assembly can be borne through the connecting mode, the problem that an existing device can only support some light hammers generally is solved, meanwhile, the connecting unit is matched with the separating unit, and the connecting unit and the separating unit can be separated conveniently. And automatic separation of the drop hammer assembly can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, and specifically relates to a device for detecting the bearing capacity of a foundation. Background Technique

[0002] The building foundation is a crucial part of a construction project. It bears the weight of the entire building and ensures the stability and safety of the building. The detection of the bearing capacity of the building foundation is an important link to ensure the stability and safety of the building. At present, there are various methods for detecting the bearing capacity of the foundation, generally including the static load test method, the dynamic penetration method, the in-situ test method, the engineering analogy method, etc. The dynamic penetration test is a method that uses the impact energy generated by the free fall of a heavy hammer to drive a probe of a certain size into the soil, and evaluates the bearing capacity of the foundation according to the difficulty of driving into the soil (i.e., the number of hammer blows for penetration).

[0003] After retrieval, the patent with the publication number CN217786721U and the publication date of November 11, 2022 discloses a device for detecting the bearing capacity of a foundation, which relates to the technical field of foundation detection. The utility model includes a frame body. A guide rod with a telescopic rod structure is arranged on the frame body. A base is arranged at the bottom of the guide rod. A sounding rod is arranged at the bottom of the base. A hammer is arranged on the upper part of the base and sleeved on the guide rod. A lifting plate cooperating with the hammer is arranged on the frame body on the side of the hammer. A push rod is arranged on the side wall of the lifting plate. A push block cooperating with the push rod is arranged on the frame body. A vertically arranged circulating belt is arranged at the corresponding position on the side part of the frame body of the hammer. A driving source for driving the circulating belt to move is arranged on the frame body. The lifting plate is an L-shaped plate and is rotatably connected to the circulating belt. An inclined surface cooperating with the push rod is arranged at the bottom of the push block, and the inclined surface is on the movement track of the push rod.

[0004] The following are the deficiencies of this patent:

[0005] 1. This device uses a rotatable lifting plate to support the hammer. However, the hammer is often heavy, and it uses a torsion spring assembly, which can generally only support some lighter hammers.

[0006] 2. After the device finishes working finally, relevant tools are used to lift the drilling part out of the soil. However, the drilling part is inserted deep into the soil, and a large force is required to lift it out. It is not convenient to take out the drilling part, which affects the detection efficiency.

[0007] Therefore, we provide a device for detecting the bearing capacity of a foundation to solve the above problems. Summary of the Invention

[0008] The purpose of the utility model is to provide a device for detecting the bearing capacity of a foundation in view of the problems in the background technique.

[0009] The utility model realizes the above purpose through the following technical solutions:

[0010] A foundation bearing capacity detection device, comprising a frame and a drill pipe assembly penetrating through the bottom surface of the frame. Above the drill pipe assembly, there is a drop hammer assembly, and at the top of the frame, there is a hoisting mechanism for lifting the drop hammer assembly.

[0011] The hoisting mechanism includes a winch drum fixed to the top of the frame and a steel wire rope wound around the winch drum. At the end of the steel wire rope, a box body is fixedly provided, and on the box body, there is a connecting unit for lifting the drop hammer assembly; on the side of the connecting unit, there is a separating unit for driving the connecting unit to rotate to automatically separate the drop hammer assembly.

[0012] As a further optimized solution of the present utility model, the connecting unit includes a first rotating shaft rotatably provided on the bottom surface of the box body and a second rotating shaft rotatably provided on the side surface of the box body; at the bottom end of the first rotating shaft, a connecting cylinder body is fixedly provided, at the top end of the first rotating shaft, a first bevel gear is fixedly provided, at the inner end of the second rotating shaft, a second bevel gear meshing with the first bevel gear is fixedly provided, and at the outer end of the second rotating shaft, a straight gear is fixedly provided.

[0013] As a further optimized solution of the present utility model, the separating unit includes a rack meshing with the straight gear and a mounting plate fixed to the top end of the rack; the mounting plate movably penetrates through the top surface of the frame and is locked with a support seat fixed on the top surface of the frame through a fastener, and on the mounting plate, there is a slot for the fastener to pass through.

[0014] As a further optimized solution of the present utility model, the drop hammer assembly includes a drop hammer body and a suspension rod fixed to the center of the top of the drop hammer body; at the top end of the suspension rod, a limit block is fixedly provided, and the connecting cylinder body is a hollow cylinder body and on the bottom surface, there is a jack for the suspension rod to insert into.

[0015] As a further optimized solution of the present utility model, guide rods are symmetrically provided on both sides of the suspension rod, and the top ends of the guide rods movably penetrate through the top surface of the frame; the bottom ends of the suspension rod and the guide rods are both threadedly connected to the drop hammer body.

[0016] As a further optimized solution of the present utility model, the drill pipe assembly includes a guide sleeve fixedly penetrating through the center of the bottom surface of the frame and a drill pipe body movably penetrating through the guide sleeve; at the top end of the drill pipe body, a top plate is fixedly provided.

[0017] As a further optimized solution of the present utility model, hanging brackets are symmetrically hinged on both sides of the top plate, and on the top surface of the drop hammer body, grooves for hanging the hanging brackets are symmetrically provided.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. The utility model solves the problem that existing devices can generally only support some relatively light impact hammers by setting a connection unit and a separation unit. The connection unit is relatively convenient to connect with the drop hammer assembly. Only by rotating the connection cylinder body can it be achieved, and this connection method can bear a relatively heavy drop hammer assembly. At the same time, the connection unit cooperates with the separation unit to realize the automatic separation of the drop hammer assembly.

[0020] 2. By setting a groove and a hanging rack, the utility model facilitates the smooth extraction of the drill pipe assembly from deep soil after the final work is completed, avoiding the problem that it requires a large amount of force to lift the drilling part from the soil using relevant tools and is inconvenient to extract. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of the overall structure of the utility model;

[0022] Figure 2 is a schematic diagram of the hoisting mechanism structure of the utility model;

[0023] Figure 3 is a schematic diagram of the connection cylinder body structure of the utility model;

[0024] Figure 4 is a schematic diagram of the drop hammer assembly structure of the utility model;

[0025] Figure 5 is a schematic diagram of the drill pipe assembly structure of the utility model.

[0026] In the figure:

[0027] 1. Frame; 2. Hoisting mechanism; 201. Reel; 202. Steel wire rope; 203. Box body; 204. Connection unit; 204a. First rotating shaft; 204b. Second rotating shaft; 204c. Connection cylinder body; 204d. First bevel gear; 204e. Second bevel gear; 204f. Straight gear; 204g. Jack hole; 205. Separation unit; 205a. Rack; 205b. Mounting plate; 205c. Support; 205d. Slot hole; 3. Drop hammer assembly; 301. Drop hammer body; 302. Suspension rod; 303. Limit block; 304. Guide rod; 305. Groove; 4. Drill pipe assembly; 401. Guide sleeve; 402. Drill pipe body; 403. Top plate; 404. Hanging rack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0029] Embodiment 1

[0030] In order to solve the problem that the existing device for detecting the bearing capacity of the foundation by the dynamic touch method is difficult to realize the automatic separation of the hoisting and the heavy hammer, and the hoisting load-bearing capacity is insufficient, please refer to Figure 1 - Figure 2 , a device for detecting the bearing capacity of the foundation provided by the utility model includes a frame 1 and a drill rod assembly 4 penetrating through the bottom surface of the frame 1. A drop hammer assembly 3 is arranged above the drill rod assembly 4, and a hoisting mechanism 2 for lifting the drop hammer assembly 3 is arranged at the top of the frame 1; the hoisting mechanism 2 includes a winding drum 201 fixed at the top of the frame 1 and a steel wire rope 202 wound around the winding drum 201. The end of the steel wire rope 202 is fixedly provided with a box body 203, and a connecting unit 204 for hoisting the drop hammer assembly 3 is arranged on the box body 203; a separating unit 205 for driving the connecting unit 204 to rotate to automatically separate the drop hammer assembly 3 is arranged on the side of the connecting unit 204. The connecting unit 204 is rotationally connected to the drop hammer assembly 3, and then the steel wire rope 202 drives the connecting unit 204 and the drop hammer assembly 3 to rise. When the connecting unit 204 rises to the separating unit 205, the separating unit 205 drives the connecting unit 204 to rotate, so as to separate the drop hammer assembly 3. The drop hammer assembly 3 applies pressure to the drill rod assembly 4 to drive it into the soil, and the bearing capacity of the foundation is evaluated according to the difficulty of driving into the soil.

[0031] As Figure 2 - Figure 3 shown, the connecting unit 204 includes a first rotating shaft 204a rotatably arranged on the bottom surface of the box body 203 and a second rotating shaft 204b rotatably arranged on the side surface of the box body 203; a connecting cylinder 204c is fixedly arranged at the bottom end of the first rotating shaft 204a, a first bevel gear 204d is fixedly arranged at the top end of the first rotating shaft 204a, a second bevel gear 204e meshing with the first bevel gear 204d is fixedly arranged at the inner end of the second rotating shaft 204b, and a straight gear 204f is fixedly arranged at the outer end of the second rotating shaft 204b.

[0032] The separating unit 205 includes a rack 205a meshing with the straight gear 204f and a mounting plate 205b fixed at the top end of the rack 205a; the mounting plate 205b movably penetrates through the top surface of the frame 1 and is locked with a support 205c fixed on the top surface of the frame 1 through a fastener; in order to facilitate the adjustment of the height of the rack 205a to match the drop hammer assembly 3 with different impact heights, a slot hole 205d for the fastener to pass through is arranged on the mounting plate 205b. During adjustment, loosen the fastener and adjust the position of the mounting plate 205b. At this time, the fastener moves along the slot hole 205d. After the rack 205a reaches the required height, tighten the fastener.

[0033] In use, as the wire rope 202 ascends, the connecting unit 204 rises. After the spur gear 204f contacts the rack 205a, it rotates. The spur gear 204f drives the second rotating shaft 204b to rotate, the second rotating shaft 204b drives the second bevel gear 204e to rotate, the second bevel gear 204e drives the first bevel gear 204d to rotate, the first bevel gear 204d drives the first rotating shaft 204a to rotate, the first rotating shaft 204a drives the connecting cylinder 204c to rotate, the connecting cylinder 204c drives the jack hole 204g to rotate. When the jack hole 204g rotates to the position of the limit block 303, the drop hammer assembly 3 falls freely due to the loss of the supporting force.

[0034] As Figure 4 shown, the drop hammer assembly 3 includes a drop hammer body 301 and a suspension rod 302 fixed to the center of the top of the drop hammer body 301; a limit block 303 is fixedly provided at the top end of the suspension rod 302. The connecting cylinder 204c is a hollow cylinder and a jack hole 204g for inserting the suspension rod 302 is provided on the bottom surface; guide rods 304 are symmetrically provided on both sides of the suspension rod 302, and the top ends of the guide rods 304 movably penetrate through the top surface of the frame 1. When the drop hammer assembly 3 is connected to the hoisting mechanism 2, the connecting cylinder 204c is pulled downward until the suspension rod 302 is inserted into the jack hole 204g, and then the connecting cylinder 204c is rotated to make the limit block 303 of the suspension rod 302 away from the jack hole 204g. Through the limitation of the limit block 303, the drop hammer body 301 can be prevented from falling; this connection method can bear a heavier drop hammer assembly 3, solving the problem that the existing device uses a rotatable lifting plate to support the hammer, but the hammer is often heavy, and its use of a torsion spring assembly can generally only support some lighter hammers.

[0035] In order to facilitate the replacement of the drop hammer body 301 with different weights based on actual detection needs, the bottom ends of the suspension rod 302 and the guide rods 304 are both threadedly connected to the drop hammer body 301. When the drop hammer body 301 needs to be replaced, the suspension rod 302 and the guide rods 304 are removed from the drop hammer body 301. After replacing with a new drop hammer body 301, the suspension rod 302 and the guide rods 304 are reinstalled.

[0036] Embodiment 2

[0037] On the basis of Embodiment 1, in order to facilitate the smooth extraction of the drill pipe assembly 4 from deeper soil after the final work is completed, as Figure 4 - Figure 5 shown, the drill pipe assembly 4 includes a guide sleeve 401 fixedly penetrated through the center of the bottom surface of the frame 1 and a drill pipe body 402 movably penetrating through the guide sleeve 401; a top plate 403 is fixedly provided at the top end of the drill pipe body 402, and hanging brackets 404 are symmetrically hinged on both sides of the top plate 403; grooves 305 for hanging the hanging brackets 404 are symmetrically provided on the top surface of the drop hammer body 301.

[0038] During use, rotate the hanger 404 above the drop hammer body 301, then connect the drop hammer body 301 to the hoisting mechanism 2. Drive the drop hammer body 301 to rise through the hoisting mechanism 2. At this time, the hanger 404 is caught in the groove 305. The drop hammer body 301 drives the hanger 404 to rise, and the hanger 404 drives the entire drill pipe assembly 4 to rise, thus facilitating the smooth extraction of the drill pipe assembly 4 from deeper soil. This solves the problem that the existing device must use relevant tools to lift the drilling part out of the soil. Since the drilling part is inserted deeper into the soil, a greater force is required to lift it out, making it inconvenient to remove the drilling part and affecting the detection efficiency.

[0039] The above-described embodiments merely represent one implementation mode of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A foundation bearing capacity detection device, comprising a frame (1) and a drill pipe assembly (4) penetrating through the bottom surface of the frame (1), characterized in that: Above the drill pipe assembly (4), there is a drop hammer assembly (3), and at the top of the frame (1), there is a hoisting mechanism (2) for lifting the drop hammer assembly (3); The hoisting mechanism (2) includes a winding drum (201) fixed to the top of the frame (1) and a steel wire rope (202) wound around the winding drum (201). At the end of the steel wire rope (202), a box body (203) is fixedly provided, and on the box body (203), there is a connecting unit (204) for lifting the drop hammer assembly (3); At the side of the connecting unit (204), there is a separating unit (205) for driving the connecting unit (204) to rotate to automatically separate the drop hammer assembly (3).

2. The foundation bearing capacity detection device according to claim 1, characterized in that: The connecting unit (204) includes a first rotating shaft (204a) rotatably arranged on the bottom surface of the box body (203) and a second rotating shaft (204b) rotatably arranged on the side surface of the box body (203); At the bottom end of the first rotating shaft (204a), a connecting cylinder body (204c) is fixedly provided. At the top end of the first rotating shaft (204a), a first bevel gear (204d) is fixedly provided. At the inner end of the second rotating shaft (204b), a second bevel gear (204e) meshing with the first bevel gear (204d) is fixedly provided. At the outer end of the second rotating shaft (204b), a spur gear (204f) is fixedly provided.

3. The ground bearing capacity detection device according to claim 2, characterized in that: The separating unit (205) includes a rack (205a) meshing with the spur gear (204f) and a mounting plate (205b) fixed to the top end of the rack (205a); The mounting plate (205b) movably penetrates through the top surface of the frame (1) and is locked with a support (205c) fixed on the top surface of the frame (1) through a fastener. On the mounting plate (205b), there is a slot hole (205d) for the fastener to pass through.

4. A foundation bearing capacity detection device according to claim 2, characterized in that: The drop hammer assembly (3) includes a drop hammer body (301) and a suspension rod (302) fixed at the center of the top of the drop hammer body (301); At the top end of the suspension rod (302), a limit block (303) is fixedly provided. The connecting cylinder body (204c) is a hollow cylinder body and on the bottom surface, there is a jack (204g) for the suspension rod (302) to insert into.

5. The ground bearing capacity detection device according to claim 4, characterized in that: On both sides of the suspension rod (302), guide rods (304) are symmetrically provided. The top ends of the guide rods (304) movably penetrate through the top surface of the frame (1); The bottom ends of the suspension rod (302) and the guide rods (304) are both threadedly connected to the drop hammer body (301).

6. The foundation bearing capacity detection device according to claim 4, characterized in that: The drill pipe assembly (4) includes a guide sleeve (401) fixedly penetrated through the center of the bottom surface of the frame (1) and a drill pipe body (402) movably penetrating through the guide sleeve (401); At the top end of the drill pipe body (402), a top plate (403) is fixedly provided.

7. The ground bearing capacity detection device according to claim 6, characterized in that: On both sides of the top plate (403), hanging brackets (404) are symmetrically hinged. On the top surface of the drop hammer body (301), grooves (305) for hanging the hanging brackets (404) are symmetrically provided.

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