Concave type combined hammer

Abstract

The utility model discloses a concave type combined hammer which comprises a bottom hammer, a connecting hammer is arranged above the bottom hammer, grooves and water guiding grooves are formed in the upper end face of the bottom hammer and the upper end face of the connecting hammer, drainage grooves are formed in the side edges of the bottom hammer and the side edges of the connecting hammer in a bilateral symmetry mode, and lifting lugs are further fixed to the upper end face of the bottom hammer and the upper end face of the connecting hammer. A locking groove is further formed in the outer side of the bottom hammer and the outer side of the connecting hammer, the locking groove is connected with a screw rod, and the screw rod is connected with a nut through threads. According to the inwards-concave type combined hammer, a full-concave body structure is adopted, structures on the hammer body such as the groove, the water guide groove, the lifting lug, the locking groove, the screw rod, the nut, the disc and the connecting rod are all concave into the hammer body, no space of the hammer body is occupied, the use space of a pile body is enlarged, and the bottom hammer and the connecting hammer which are different in weight are designed, so that the bottom hammer and the connecting hammer can be independently used; and the bottom hammer and the connecting hammer can be assembled for use, so that the device is suitable for detecting pile foundations with different construction characteristics, and the adaptability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering infrastructure detection, in particular to an inner concave combination hammer. Background Art

[0002] In my country, the construction (municipal), transportation (highway, water transport, railway, aviation, etc.), water conservancy, energy (hydropower, electricity, nuclear power, etc.), offshore platform, civil air defense and other engineering construction industries will use and involve pile foundation engineering. According to the current industry specifications: "Technical Specifications for Building Foundation Pile Testing" JGJ106, "Technical Regulations for Water Transport Engineering Foundation Test and Inspection" JTS237, "Technical Regulations for Dynamic Measurement of Highway Engineering Foundation Pile" JTG / TF81, "Technical Regulations for Railway Engineering Foundation Pile Testing" TB10218, "Regulations for Dynamic Testing of Port Engineering Pile Foundation" JTJ249, " The Technical Code for Pile Testing of Power Engineering DL / T5493 and the Standard for Geophysical Exploration of Urban Engineering CJJ / T7 have relevant requirements for free fall hammers for high strain method testing. Pile foundation is an underground concealed structure. Various defects are inevitable during the construction process due to various reasons. High strain method testing is a reliable method for determining the ultimate bearing capacity of a single pile. Compared with static load, it is not only light in equipment, fast in detection speed and low in cost, but also has many functions that static load test piles do not have, providing strong technical support for the acceptance of pile foundation projects. Its advantages have been recognized by everyone.

[0003] The existing hammer device for single pile detection is generally an integrated structure, which is inconvenient to adjust the weight of the hammer according to actual needs, and is divided into an upward convex hammer and a downward concave hammer according to the position of the lifting lug (the lifting lug of the upward convex hammer protrudes outward and is easily damaged by bumps; the lifting lug of the downward concave hammer forms an empty groove, which is easy to accumulate water and cause the groove to rust). Therefore, in view of the above problems, an inward concave combination hammer is designed to better meet the actual use needs. Utility Model Content

[0004] The purpose of the utility model is to provide a concave combination hammer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inward-concave combination hammer, including a bottom hammer, a connecting hammer is arranged above the bottom hammer, the upper end surfaces of the bottom hammer and the connecting hammer are provided with grooves and water guide grooves, the sides of the bottom hammer and the connecting hammer are symmetrically provided with drainage grooves, the upper end surfaces of the bottom hammer and the connecting hammer are also fixed with lifting ears, the outer sides of the bottom hammer and the connecting hammer are also provided with locking grooves, the locking grooves are connected to a screw rod, the screw rod is connected to a nut through a thread, and a disc is nested and connected in the groove on the bottom hammer.

[0006] Preferably, the bottom hammer and the connecting hammer are both steel cast structures, and the diameters of the bottom hammer and the connecting hammer are equal, and the centers of the circles of the bottom hammer and the connecting hammer coincide after being spliced. By casting the bottom hammer and the connecting hammer with different weights and coordinating the connecting effect of the bottom hammer and the connecting hammer, three hammer bodies with different weights can be formed to better meet actual detection needs.

[0007] Preferably, the groove, water guide groove and drainage groove are all concave structures, and the groove and drainage groove are connected through the water guide groove. Through the concave structure and the water guide groove, the water accumulated in the groove can be easily drained out to avoid rusting of the groove body.

[0008] Preferably, the height of the lifting ear is equal to the depth of the groove, and the diameter of the groove is larger than the length of the lifting ear, and a lifting hole is provided on the lifting ear, and the center of the lifting ear coincides with the center of the circle of the bottom hammer. By installing the lifting ear in a recessed manner, the lifting ear can be protected to prevent damage due to bumps.

[0009] Preferably, there are six groups of locking grooves distributed at equal angles about the center of the bottom hammer, and the locking grooves are of a "T"-shaped structure. Through the action of the locking grooves, basic protection can be provided for the splicing of the bottom hammer and the connecting hammer.

[0010] Preferably, the screws and nuts are distributed in six groups at equal angles about the center line of the bottom hammer, and the bottom hammer and the connecting hammer can be locked by the screws and nuts. Through the action of the screws and nuts, the stability of the bottom hammer and the connecting hammer after assembly can be ensured.

[0011] Preferably, the disc and the lifting ear are also nested and connected, and the thickness of the disc is less than the depth of the groove. The nesting effect between the disc and the lifting ear facilitates the positioning and installation of the disc, and the thickness of the disc is limited to prevent the upper end surface of the disc from exceeding the upper end surface of the bottom hammer.

[0012] Preferably, connecting rods are fixed symmetrically on the disc, and the connecting rods and the drainage grooves are nested and slidably connected. The connecting hammer can be guided by the sliding guiding action of the connecting rods and the drainage grooves, thereby facilitating the assembly of the bottom hammer and the connecting hammer.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the inwardly recessed combination hammer adopts a fully recessed structure, so that the structures on the hammer body, such as the groove, water guide groove, lifting ear, locking groove, screw, nut, disc and connecting rod, are all recessed in the hammer body, without occupying any hammer body space, thereby increasing the use space of the pile body, and by designing bottom hammers and connecting hammers of different weights, the bottom hammer and the connecting hammer can be used separately, or they can be assembled and used, so as to be suitable for pile foundation detection with different construction characteristics, thereby improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the explosion front view stereoscopic structure of the bottom hammer and the connecting hammer of the utility model;

[0015] Figure 2 This is a schematic diagram of the front view of the three-dimensional structure of the bottom hammer and the connecting hammer of the utility model;

[0016] Figure 3 It is a schematic diagram of the front view cross-section of the three-dimensional structure of the bottom hammer and the connecting hammer of the utility model.

[0017] In the figure: 1. bottom hammer; 2. connecting hammer; 3. groove; 4. water guide groove; 5. drainage groove; 6. lifting ear; 7. locking groove; 8. screw; 9. nut; 10. disc; 1001. connecting rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3 The utility model provides a technical solution: an inner concave combination hammer, including a bottom hammer 1, a connecting hammer 2 is arranged above the bottom hammer 1, a groove 3 and a water guide groove 4 are provided on the upper end surfaces of the bottom hammer 1 and the connecting hammer 2, drainage grooves 5 are symmetrically provided on the sides of the bottom hammer 1 and the connecting hammer 2, and a lifting ear 6 is fixed on the upper end surfaces of the bottom hammer 1 and the connecting hammer 2. A locking groove 7 is also provided on the outer side of the bottom hammer 1 and the connecting hammer 2, the locking groove 7 is connected to a screw rod 8, and the screw rod 8 is connected to a nut 9 through a thread, and a disc 10 is nested and connected in the groove 3 on the bottom hammer 1.

[0020] The groove 3, the water guide groove 4 and the drainage groove 5 are all concave structures, and the groove 3 and the drainage groove 5 are connected and connected through the water guide groove 4; the height of the lifting ear 6 is equal to the depth of the groove 3, and the diameter of the groove 3 is greater than the length of the lifting ear 6, and a lifting hole is opened on the lifting ear 6, and the center of the lifting ear 6 coincides with the center of the circle of the bottom hammer 1;

[0021] The bottom hammer 1 and the connecting hammer 2 are produced according to actual needs, and the weight of the bottom hammer 1 is less than the weight of the connecting hammer 2. When the concave combination hammer is used, Figure 1As shown, the bottom hammer 1 and the connecting hammer 2 can be used alone to detect the pile foundation, and the concave design of the lifting lug 6 can prevent the lifting lug 6 from being damaged due to collision during subsequent use, thereby ensuring the service life of the device, and when the bottom hammer 1 and the connecting hammer 2 are used alone, when water accumulates in the groove 3, the water guide groove 4 can guide the water in the groove 3 out, and cooperate with the drainage groove 5 to discharge it outward, thereby preventing the water in the groove 3 from rusting and damaging the hammer body;

[0022] The bottom hammer 1 and the connecting hammer 2 are both steel casting structures, and the diameters of the bottom hammer 1 and the connecting hammer 2 are equal, and the centers of the bottom hammer 1 and the connecting hammer 2 coincide after being spliced; there are six groups of locking grooves 7 distributed at equal angles about the center of the bottom hammer 1, and the locking grooves 7 are of a "T"-shaped structure; there are six groups of screw rods 8 and nuts 9 distributed at equal angles about the center line of the bottom hammer 1, and the bottom hammer 1 and the connecting hammer 2 can be locked by the screw rods 8 and the nuts 9; the disc 10 and the lifting ear 6 are also nested, and the thickness of the disc 10 is less than the depth of the groove 3; the disc 10 is also symmetrically fixed with a connecting rod 1001, and the connecting rod 1001 and the drainage groove 5 are nested, and the connecting rod 1001 and the drainage groove 5 are slidably connected;

[0023] In actual use, when the individual weights of the bottom hammer 1 and the connecting hammer 2 cannot meet the detection requirements, the bottom hammer 1 and the connecting hammer 2 can be combined into a super-large hammer for detection, such as Figure 1-Figure 3 As shown, the positioning and installation of the disc 10 can be achieved by nesting the disc 10 with the groove 3 and the lifting ear 6, and then the connecting hammer 2 is lifted by a crane so that the drainage groove 5 on the connecting hammer 2 cooperates with the connecting rod 1001 to slide. Through the sliding guiding effect of the connecting rod 1001, the stable assembly of the connecting hammer 2 and the bottom hammer 1 can be guaranteed, and the center of the circle of the connecting hammer 2 and the bottom hammer 1 can be guaranteed to coincide. After the installation is completed, the connecting hammer 2 and the bottom hammer 1 can be fixed by locking the screw rod 8 and the nut 9 with the locking groove 7 on the connecting hammer 2 and the bottom hammer 1, thereby ensuring the stability of the connection between the connecting hammer 2 and the bottom hammer 1, thereby realizing the assembly of the connecting hammer 2 and the bottom hammer 1 to meet the detection requirements. This is the working principle of the concave combination hammer.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inwardly recessed combination hammer, comprising a bottom hammer (1), a connecting hammer (2) being arranged above the bottom hammer (1), characterized in that: The upper end surfaces of the bottom hammer (1) and the connecting hammer (2) are both provided with a groove (3) and a water guide groove (4); the sides of the bottom hammer (1) and the connecting hammer (2) are both symmetrically provided with a drainage groove (5); the upper end surfaces of the bottom hammer (1) and the connecting hammer (2) are also fixed with a lifting lug (6); the outer sides of the bottom hammer (1) and the connecting hammer (2) are also provided with a locking groove (7); the locking groove (7) is connected to a screw rod (8); the screw rod (8) is connected to a nut (9) through a thread; and a disc (10) is nested and connected in the groove (3) on the bottom hammer (1).

2. The recessed combination hammer according to claim 1, characterized in that: The bottom hammer (1) and the connecting hammer (2) are both steel casting structures, and the diameters of the bottom hammer (1) and the connecting hammer (2) are equal, and the centers of the bottom hammer (1) and the connecting hammer (2) coincide after they are spliced.

3. The recessed combination hammer according to claim 1, characterized in that: The groove (3), the water guide groove (4) and the drainage groove (5) are all inwardly concave structures, and the groove (3) and the drainage groove (5) are connected and interlinked via the water guide groove (4).

4. The recessed combination hammer according to claim 1, characterized in that: The height of the lifting ear (6) is equal to the depth of the groove (3), the diameter of the groove (3) is greater than the length of the lifting ear (6), and a lifting hole is provided on the lifting ear (6), and the center of the lifting ear (6) coincides with the center of the circle of the bottom hammer (1).

5. The recessed combination hammer according to claim 1, characterized in that: The locking grooves (7) are distributed in six groups at equal angles with respect to the center of the bottom hammer (1), and the locking grooves (7) are of a "T"-shaped structure.

6. The recessed combination hammer according to claim 1, characterized in that: The screw rods (8) and nuts (9) are arranged in six groups at equal angles with respect to the center line of the bottom hammer (1), and the bottom hammer (1) and the connecting hammer (2) can be locked by means of the screw rods (8) and nuts (9).

7. The recessed combination hammer according to claim 1, characterized in that: The disc (10) and the lifting ear (6) are also nested and connected, and the thickness of the disc (10) is smaller than the depth of the groove (3).

8. The recessed combination hammer according to claim 1, characterized in that: The disk (10) is also symmetrically fixed with connecting rods (1001), and the connecting rods (1001) and the drainage groove (5) are nested and connected, and the connecting rods (1001) and the drainage groove (5) are slidably connected.

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