CN220116066U

CN220116066U - Improved lifting device for standard penetration test

Info

Publication number: CN220116066U
Application number: CN202321679255.6U
Authority: CN
Inventors: 慕凤林; 牛宗杰; 侯燕梅; 王强
Original assignee: TAIYUAN ARCHITECTURAL DESIGN AND RESEARCH INSTITUTE
Current assignee: TAIYUAN ARCHITECTURAL DESIGN AND RESEARCH INSTITUTE
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-12-01
Anticipated expiration: 2033-06-29

Abstract

The utility model discloses an improved lifting device for a standard penetration test, which comprises a bottom plate, a sliding mechanism and a movable positioning mechanism, wherein the sliding mechanism comprises two sliding rods which are symmetrically and uniformly distributed and fixedly installed, and a plurality of rolling rods are movably installed on the inner wall of each sliding rod in a straight line and uniformly distributed manner. According to the utility model, the lifting pulley is hung on the downward lifting ring of the supporting frame, the lifting pulley is connected with the electric hoist through the steel wire rope, the lifting pulley is also connected with the hanging tongs, the hanging tongs is connected with the two lifting rings of the heavy hammer, the two sides of the lifting rod of the heavy hammer are placed in the two sliding rods, the standard injector penetrates through the through hole of the bottom plate, the electric hoist drives the lifting rod of the heavy hammer to slide back and forth, meanwhile, the rolling rod is in sliding connection with the lifting rod, and the standard injector is hammered circularly, so that the smoothness of the upward and downward movement of the heavy hammer is increased by utilizing the mutual matching of the rolling rod in the sliding rod and the lifting rod of the heavy hammer, and the pause and contusion of the heavy hammer in the movement process is reduced.

Description

Improved lifting device for standard penetration test

Technical Field

The utility model relates to the technical field of standard penetration test equipment, in particular to an improved lifting device for a standard penetration test.

Background

The standard penetration test is one of in situ tests, which is a method of measuring the foundation load bearing capacity of sand or cohesive soil in the field. The standard penetration test is to use a 63.5kg hammer to free fall from a height of 76cm, and the number of hits required for a standard penetration machine of 51 cm in length, 5.1 cm in outer diameter and 3.49 cm in inner diameter to hit 30cm in the soil is called the standard penetration number N. When the soil is penetrated, the drop distance of the penetrating hammer is 76cm, so that the soil freely falls, and the penetrating device is directly driven into the soil layer for 15 cm. The number of hammering of 30cm into soil layer is the actual measured hammering number N. Then, an injector is put forward, and the soil sample in the injector is taken out for identification description.

There are also many types on the market for penetrating test hoisting device, but most hoisting device, wherein there is great friction between heavy hammer and the spout when going on the up-and-down motion for the heavy hammer produces easily to pause the sense at the motion process, also is inconvenient for placing overall structure and the ground of being tested perpendicularly simultaneously, has reduced experimental precision, has certain defect.

Disclosure of Invention

The utility model aims to provide an improved lifting device for a standard penetration test, which can increase the smoothness of the up-and-down movement of a heavy hammer, reduce the feeling of the heavy hammer during the movement, ensure that the whole structure and the ground are always in a vertical state, and ensure the accuracy of the test.

The aim of the utility model can be achieved by the following technical scheme:

the improved lifting device for the standard penetration test comprises a bottom plate, a sliding mechanism and a movable positioning mechanism, wherein the sliding mechanism is fixedly arranged in the middle of the top surface of the bottom plate, and the movable positioning mechanism is fixedly arranged at the bottom end of the movable positioning mechanism;

the sliding mechanism comprises two sliding rods which are symmetrically and uniformly distributed and fixedly installed, a plurality of roller rods are movably installed on the inner wall of each sliding rod in a straight line and uniformly distributed mode, scale plates are arranged on the front faces of the sliding rods, and connecting frames are fixedly installed at the top ends of the sliding rods.

As a further scheme of the utility model: the two sides of the connecting frame are fixedly provided with supporting frames, the upper ends of the supporting frames are fixedly provided with lifting rings, and the bottom ends of the supporting frames are fixedly arranged on the top surface of the bottom plate.

As a further scheme of the utility model: the front end and the rear end of the supporting frame are symmetrically and uniformly distributed and fixedly provided with two supporting rods, and the bottom ends of the four supporting rods are fixedly arranged on the top surface of the bottom plate.

As a further scheme of the utility model: the bottom plate top is symmetrical even distribution fixed mounting has two locating levers, locating plate top fixed mounting has the locating plate, locating plate bottom is symmetrical even distribution fixed mounting has two electric telescopic handle, the electric telescopic handle other end runs through bottom plate fixed mounting has the mounting panel, the bottom plate bottom surface is rectangle evenly distributed fixed mounting and has four universal wheels.

As a further scheme of the utility model: an electric hoist is fixedly arranged at the rear end of the top surface of the bottom plate, and a through hole is formed in the middle of the top surface of the bottom plate.

The utility model has the beneficial effects that:

according to the utility model, the lifting pulley is hung on the lifting ring of the supporting frame and is connected with the electric hoist through the steel wire rope, the lifting pulley is also connected with the hanging tongs, the hanging tongs are connected with the two lifting rings of the heavy hammer, the two sides of the lifting rod of the heavy hammer are placed in the two sliding rods, the standard injector penetrates through the through hole of the bottom plate, the electric hoist drives the lifting rod of the heavy hammer to move back and forth in the two sliding rods and simultaneously contact with the roller rod in the sliding rod, and the standard injector is hammered circularly, so that the smoothness of the up-and-down movement of the heavy hammer is increased by utilizing the mutual matching of the roller rod in the sliding rod and the lifting rod of the heavy hammer, and the shock feeling of the heavy hammer in the movement process is reduced;

according to the utility model, the movable positioning mechanism is arranged, the whole structure is moved to a proper position by the universal wheels, the four electric telescopic rods are started to drive the mounting plate to contact with the ground, the mounting plate is mounted, and the telescopic lengths of the four electric telescopic rods are controlled according to the hollow state of the ground, so that the whole structure is in a vertical state with the ground, and the accuracy of a test is ensured.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of the overall structure of the present utility model;

FIG. 3 is a schematic diagram of the overall structure of the present utility model;

in the figure: 1. a bottom plate; 2. a support frame; 3. a sliding mechanism; 301. a scale plate; 302. a slide bar; 303. a roller rod; 304. a connecting frame; 4. a moving positioning mechanism; 401. a positioning plate; 402. an electric telescopic rod; 403. a mounting plate; 404. a universal wheel; 405. a positioning rod; 5. lifting rings; 6. a support rod; 7. a through hole; 8. an electric hoist.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-3, the improved lifting device for the standard penetration test comprises a bottom plate 1, a sliding mechanism 3 and a movable positioning mechanism 4, wherein the sliding mechanism 3 is fixedly arranged in the middle of the top surface of the bottom plate 1, and the movable positioning mechanism 4 is fixedly arranged at the bottom end of the movable positioning mechanism 4;

the sliding mechanism 3 comprises two sliding rods 302 which are symmetrically and uniformly distributed and fixedly installed, a plurality of roller rods 303 are movably installed on the inner wall of the sliding rods 302 in a straight line and uniformly distributed manner, scale plates 301 are arranged on the front faces of the two sliding rods 302, and connecting frames 304 are fixedly installed at the top ends of the sliding rods 302;

the two sides of the two connecting frames 304 are fixedly provided with supporting frames 2, the upper ends of the supporting frames are fixedly provided with lifting rings 5, the bottom ends of the supporting frames 2 are fixedly arranged on the top surface of the bottom plate 1, and the supporting frames 2 and the lifting rings 5 are matched with each other to lift the hanging tongs and the heavy hammer to a specified height so as to ensure that the test can be normally carried out;

the front end and the rear end of the supporting frame 2 are symmetrically and uniformly distributed and fixedly provided with two supporting rods 6, the bottom ends of the four supporting rods 6 are fixedly arranged on the top surface of the bottom plate 1, the supporting frame 2 is supported by the aid of the four supporting rods 6 in a matched mode, and stability in a test process is improved.

The working principle of the utility model is as follows: the staff hangs the lifting pulley on the lifting ring 5 of braced frame 2, the lifting pulley passes through wire rope with electric hoist 8 and is connected, the lifting pulley still is connected with the hanging tongs, the hanging tongs is connected with two rings of weight, the lifter both sides of weight are placed in two slide bars 302, standard penetrating means passes in the through-hole 7 of bottom plate 1, electric hoist 8 drives the lifter of weight and carries out the back and forth movement in two slide bars 302, simultaneously with the contact of roller lever 303 in the slide bar 302, the standard penetrating means is hammered in circulation, thereby utilize roller lever 303 and the lifter of weight in the slide bar 302 to mutually support, increase the smoothness of weight up-and-down motion, reduce the sense of the pause and feel of weight in the motion in-process.

As shown in fig. 2-3, two positioning rods 405 are fixedly installed on the top surface of the bottom plate 1 in a symmetrical and uniform manner, a positioning plate 401 is fixedly installed on the top end of each positioning rod 405, two electric telescopic rods 402 are fixedly installed on the bottom surface of each positioning plate 401 in a symmetrical and uniform manner, a mounting plate 403 is fixedly installed at the other end of each electric telescopic rod 402, four universal wheels 404 are fixedly installed on the bottom surface of the bottom plate 1 in a rectangular and uniform manner, an electric hoist 8 is fixedly installed at the rear end of the top surface of the bottom plate 1, a through hole 7 is formed in the middle of the top surface of the bottom plate 1, a heavy hammer is driven to lift by the electric hoist 8, and an injector is placed by the through hole 7.

The working principle of the utility model is as follows: the staff removes suitable position with overall structure by universal wheel 404, starts four electric telescopic handle 402 and drives mounting panel 403 and ground and contact, installs, and the flexible length of four electric telescopic handle 402 is controlled according to the pothole state on ground to reach overall structure and ground and be in the vertical state, guarantee experimental precision.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The improved lifting device for the standard penetration test is characterized by comprising a bottom plate (1), a sliding mechanism (3) and a movable positioning mechanism (4), wherein the sliding mechanism (3) is fixedly arranged in the middle of the top surface of the bottom plate (1), and the movable positioning mechanism (4) is fixedly arranged at the bottom end of the movable positioning mechanism (4);

the sliding mechanism (3) comprises two sliding rods (302) which are symmetrically and uniformly distributed and fixedly installed, a plurality of roller rods (303) are movably installed on the inner wall of each sliding rod (302) in a straight line and uniformly distributed mode, scale plates (301) are arranged on the front faces of the two sliding rods (302), and connecting frames (304) are fixedly installed on the top ends of the sliding rods (302).

2. The improved lifting device for the standard penetration test according to claim 1, wherein two sides of the connecting frame (304) are fixedly provided with supporting frames (2), the upper ends of the supporting frames are fixedly provided with lifting rings (5), and the bottom ends of the supporting frames (2) are fixedly arranged on the top surface of the bottom plate (1).

3. The improved lifting device for the standard penetration test according to claim 2, wherein two supporting rods (6) are fixedly arranged at the front end and the rear end of the supporting frame (2) in a symmetrical and uniform distribution manner, and the bottom ends of the four supporting rods (6) are fixedly arranged on the top surface of the bottom plate (1).

4. The improved lifting device for the standard penetration test according to claim 1, wherein two positioning rods (405) are fixedly arranged on the top surface of the bottom plate (1) in a symmetrical and uniform distribution mode, a positioning plate (401) is fixedly arranged on the top end of each positioning rod (405), two electric telescopic rods (402) are fixedly arranged on the bottom surface of each positioning plate (401) in a symmetrical and uniform distribution mode, a mounting plate (403) is fixedly arranged on the other end of each electric telescopic rod (402) in a penetrating mode through the bottom plate (1), and four universal wheels (404) are fixedly arranged on the bottom surface of the bottom plate (1) in a rectangular and uniform distribution mode.

5. The improved lifting device for the standard penetration test according to claim 1, wherein an electric lifting machine (8) is fixedly arranged at the rear end of the top surface of the bottom plate (1), and a through hole (7) is formed in the middle of the top surface of the bottom plate (1).