CN212007781U - A jack static load experimental platform - Google Patents

Abstract

The utility model discloses a jack static load experiment platform, which comprises a working table, a material loading table, a jack, a heavy object block, a sliding block and a lifting mechanism for driving the sliding block 1 to move. The top surface of the material loading table is further provided with a limit bar , There is a combination mechanism at the bottom of the loading platform, the jack is located at the bottom of the loading platform, the heavy block is in the shape of a circular ring, and the center of the slider is provided with a through groove and a bearing mechanism for the jack to pass through, and the bearing mechanism includes two bearing Plate and drive unit, the front side of the carrier plate is connected to the drive unit, the rear side of the carrier plate is connected to the slider in a sliding manner, and the sides of the two carrier plates close to each other are provided with semicircular step grooves matched with the loading table. There is also a pressure sensor, and a measuring mechanism is also provided on the right side of the lifting mechanism. The loading platform is placed with heavy blocks, and the loading plate moves down with the loading platform, and is combined with the movable rod of the jack. Through the measuring mechanism, a certain amount is measured. After time, the distance that the jack activity rod falls.

Description

A jack static load experimental platform

technical field

The utility model relates to the field of jacks, in particular to a jack static load experimental platform.

Background technique

The jack is mainly used in factories, mines, transportation and other departments as vehicle repair and other lifting and support work. Its structure is light, strong, flexible and reliable, and can be carried and operated by one person.

The static load experiment of the jack is to place a weight with a set mass on the movable rod of the jack, record the initial position of the movable rod of the jack, and then wait for a certain period of time to record another position of the movable rod of the jack. Through two positions, it is obtained that the movable rod of the jack moves downward under a certain pressure and after a certain period of time, and then compares it with the standard vertebra to determine whether the static load of the tested jack is qualified.

At present, there is a lack of a platform specially used for this type of static load experiment, which leads to inconvenient operation during the experiment and is prone to errors.

Utility model content

The purpose of the utility model is to provide a jack static load experimental platform, which has the advantages of convenient operation, reduced experimental error and the like.

The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions:

A jack static load experiment platform, comprising a workbench, a material loading table, a jack, a heavy block, a sliding block, and a lifting mechanism for driving the sliding block 1 to move. The loading table is circular, and the top of the loading table is A circular groove is provided, the top surface of the circular groove is also provided with a limit bar, and the bottom of the loading platform is provided with a combination mechanism that cooperates with different jack rod diameters within a certain range, and the jack is arranged on the bottom of the loading platform. At the bottom, the weight block is annular, and the outer diameter of the weight block is matched with the circular groove, the slider one is square, and the center of the slider one is provided with a through groove for the jack to pass through, The center of the slider 1 is also provided with a bearing mechanism for carrying the loading table, the bearing mechanism includes two bearing plates, and a driving unit for driving the objects of the two bearing plates to move, and the front side of the bearing plate is connected with the driving unit , the rear side of the carrying plate is slidably connected to the slider, the sides of the two carrying plates close to each other are provided with semicircular stepped grooves that cooperate with the loading table, and the carrying plate is also provided with a pressure sensor, so The right side of the lifting mechanism is also provided with a measuring mechanism.

With the above technical solution, initially, the two load-bearing plates are attached, and the load-bearing table is placed on the semicircular step groove after placing a suitable weight block. As soon as the slider descends, the loading table descends, and when the three-jaw chuck at the bottom of the loading table touches the rod of the jack, the loading table stops moving down, but the two bearing plates continue to move down a section, and there is also a set on the bearing plate. There is a pressure sensor, when the value of the pressure sensor returns to zero, the lifting mechanism is suspended, and the three-jaw chuck and the rod of the jack are matched with the hexagon. The time is obtained through the measuring mechanism. Under a certain load, the distance that the rod of the jack moves down after a certain period of time.

Preferably, the measuring mechanism includes a vertical rod, a second sliding block and a connecting part, the sliding block two and the vertical rod are slidably connected, and the vertical rod is marked with a scale, and one end of the connecting part is fixed to the second sliding block Connection, the other end and the loading table can be detachably connected.

With the above technical solution, the loading table moves, and the second sliding block is driven to move on the vertical rod through the connecting portion. The vertical rod is marked with a scale for easy reading.

Preferably, the drive unit includes a housing, a bidirectional screw rod and a motor 1, the bidirectional screw rod comprises a thread part 1, a threaded part 2 and a connecting part, both ends of the bidirectional screw rod are rotatably connected to the housing, and the bidirectional screw rod One end of the motor goes out of the casing, and the first end of the motor and the two-way screw go out of the casing to be fixedly connected, the middle of the casing is provided with a partition, the left side of the two carrying plates The two protruding parts are respectively located on both sides of the partition plate, and the two protruding parts are respectively provided with threaded through holes matched with the two threaded parts.

With the above technical solution, when the motor rotates, it drives the two bearing plates to move in opposite directions.

Preferably, the lifting mechanism includes four guide rods and two hydraulic cylinders, the four guide rods are fixedly connected to the worktable, and four corners of the slider 1 are provided with through-holes matched with the four guide rods. holes, the two hydraulic cylinders are fixedly connected to the two sides of the bottom of the slider.

With the above technical solution, the hydraulic cylinder drives the sliding block to ascend and descend.

Preferably, the combination mechanism is a three-jaw chuck, the jaws of the three-jaw chuck face downward, the three-jaw chuck is fixedly connected to the bottom of the loading table, and the three-jaw chuck is provided with an adjustment port.

With the above technical solution, the three-jaw chuck can be matched with a jack within a certain range.

Preferably, when the value of the pressure sensor on the carrier plate returns to zero, the hydraulic cylinder pauses for a period of time, and then moves down.

Using the above technical solution, when the value of the pressure sensor returns to zero, the lifting mechanism is suspended, and within this period of suspension, the three-jaw chuck and the rod of the jack are matched with the inner hexagon.

Preferably, a stopwatch is also provided on the workbench.

By adopting the above technical scheme, it is convenient to observe the time when the jack is pressed.

Description of drawings

Fig. 1 is the structural representation of embodiment;

FIG. 2 is a schematic diagram of the carrying mechanism of the embodiment.

Reference numerals: 1. Workbench; 2. Loading platform; 21. Circular groove; 22. Limit bar; 3. Jack; 4. Heavy block; 5. Slider one; 51. Through groove; groove; 6, bearing mechanism; 61, bearing plate; 611, semicircular step groove; 612, protrusion; 613, protruding part; 62, drive unit; 621, housing; 622, two-way screw; 623, motor one; 7 , Measuring mechanism; 71, vertical rod; 72, slider two; 73, connecting part; 8, guide rod; 9, hydraulic cylinder; 10, three-jaw chuck.

Detailed ways

The following descriptions are only the preferred embodiments of the present invention, and the protection scope is not limited to this embodiment. All technical solutions that belong to the idea of the present invention should belong to the protection scope of the present invention. At the same time, it should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

As shown in Figure 1 and Figure 2, a jack static load experimental platform includes a workbench 1, a loading table 2, a jack 3, a heavy block 4, a slider 1 5 and a lifting mechanism that drives the slider 1 5 to move, The loading table 2 is circular, and the top of the loading table 2 is provided with a circular groove 21 , the weight block 4 is circular (easy to take), and the outer diameter of the weight block 4 is matched with the circular groove 21 , the top surface of the circular groove 21 is also provided with three limit bars 22 at intervals of 120 degrees, so that different numbers of heavy blocks 4 can be placed on the loading platform 2 according to different load requirements, and the bottom of the loading platform 2 There is a combination mechanism that cooperates with the 3 rod diameters of different jacks within a certain range. The combination mechanism is a three-jaw chuck 10, and the jaws of the three-jaw chuck 10 face downward, and the bottom of the three-jaw chuck 10 and the loading table 2 are welded. Fixed, and the center of the three-jaw chuck 10 and the center of the loading table 2 coincide in the top view direction, the three-jaw chuck 10 is provided with an adjustment port, insert the inner hexagon into the adjustment port, and rotate the three jaws to move at the same time, Adapt to different jack 3 rod diameters within a certain range.

The slider one 5 is square, and the center of the slider one 5 is provided with a through slot 51 for the jack 3 to pass through. The carrier board 61 and the drive unit 62 that drives the two carrier boards 61 to move. The left side of the carrier board 61 is connected to the drive unit 62. The rear side of the carrier board 61 is provided with a protrusion 612, and the corresponding position of the slider 15 is provided with a recess. Slot 52, the drive unit 62 includes a casing 621, a two-way screw 622 and a motor one 623. The two-way screw 622 includes a threaded part 1, a second threaded part and a connecting part 73 points. The two ends of the casing 621 are provided with bearings, and the two-way screw 622 has two parts. The end and the casing 621 are rotatably connected, and one end of the two-way screw 622 passes through the casing 621. The output shaft of the motor one 623 and the end of the two-way screw 622 passing through the casing 621 are fixedly connected by a coupling. The front side is provided with a protruding portion 613, and the two protruding portions 613 are respectively provided with threaded through holes that cooperate with the two threaded portions. The sides of the two carrying plates 61 close to each other are provided with semicircular stepped grooves 611 that cooperate with the loading table 2. In this way, the drive unit 62 drives the two carrying plates 61 to approach each other, and after the two carrying plates 61 are attached, the two semicircular stepped grooves 611 form a circular stepped groove that matches the loading table 2, so that the loading table 2 Placed in the step slot.

The lifting mechanism includes four guide rods 8 and two hydraulic cylinders 9. The four guide rods 8 are fixedly connected to the worktable 1. The four corners of the slider 1 5 are provided with through holes matched with the four guide rods 8. The telescopic rods of the two hydraulic cylinders 9 are fixedly connected to the left and right sides of the bottom of the slider 1 5 , the hydraulic cylinders 9 are fixedly connected to the worktable 1 , and the two hydraulic cylinders 9 are located between the corresponding two guide rods 8 .

The right side of the lifting mechanism is also provided with a measuring mechanism 7. The measuring mechanism 7 includes a vertical rod 71, a second sliding block 72 and a connecting portion 73. The second sliding block 72 is annular, and the second sliding block 72 and the vertical rod 71 slide. Connection, the vertical rod 71 is marked with a scale, the bottom of the vertical rod 71 is fixedly connected with the table 1, one end of the connecting part 73 is welded and fixed with the slider two 72, the other end of the connecting part 73 is provided with a through hole, and the There are corresponding threaded holes on the top surface. After the bolts pass through the connecting part 73, they cooperate with the threaded holes to realize the connection between the connecting part 73 and the loading table 2. In this way, when the loading table 2 moves, it will drive the slider. The second 72 moves on the vertical rod 71, the connecting part 73 is provided with a connecting piece that matches the cylindrical side of the loading table 2, the connecting piece is provided with a through hole, and the cylindrical side of the loading table 2 is provided with a matching threaded hole.

Initially, the two bearing plates 61 are attached, the loading platform 2 is placed on the semicircular step groove 611 after placing the appropriate weight block 4, the jack 3 is placed on the workbench 1, and is directly under the bearing plate 61, and the lifting is lifted. The mechanism drives the slider 1 5 down, and the loading table 2 descends accordingly. When the three-jaw chuck 10 at the bottom of the loading table 2 touches the rod of the jack 3, the loading table 2 stops moving down, but the two carrying plates 61 continue to move downward. Move down a section, there is also a pressure sensor on the carrier plate 61. When the value of the pressure sensor returns to zero, the lifting mechanism is suspended, and the three-jaw chuck 10 and the rod of the jack 3 are matched with the inner hexagon, and record the vertical rod 71 at this time. Reading, the drive unit 62 drives the two bearing plates 61 away from each other, so that the bearing plates 61 do not contact the jack 3, and let it stand for a period of time. There is also a stopwatch on the workbench 1 (the stopwatch is not shown in the figure). To determine the resting time, after the resting time is reached, record the reading on the vertical rod 71 again, so that the distance that the rod of the jack 3 moves down after a certain time under a certain load can be obtained.

Claims (7)

1. The jack static load experiment platform is characterized by comprising a workbench (1), a material carrying platform (2), a jack (3), a heavy object block (4), a first sliding block (5) and a lifting mechanism for driving the first sliding block (5) to move, wherein the material carrying platform (2) is circular, a circular groove (21) is formed in the top of the material carrying platform (2), a limiting strip (22) is further arranged on the top surface of the circular groove (21), a combination mechanism matched with rod diameters of different jacks (3) in a certain range is arranged at the bottom of the material carrying platform (2), the jack (3) is arranged at the bottom of the material carrying platform (2), the heavy object block (4) is circular, the outer diameter of the heavy object block (4) is matched with the circular groove (21), the first sliding block (5) is square, a through groove (51) for the jack (3) to penetrate through is formed in the center of the first sliding block (5), and a bearing mechanism (6) for bearing the material carrying platform (2) is further arranged in the center of the first sliding block (5), bear mechanism (6) and include two loading boards (61) to and drive two loading boards (61) drive unit (62) that the object removed, drive unit (62) are connected to the front side of loading board (61), the rear side and slider (5) sliding connection of loading board (61), two loading boards (61) are close to and are equipped with on the side of each other with carry material platform (2) complex semicircle step groove (611), still be equipped with pressure sensor on loading board (61), elevating system's right side still is equipped with measuring mechanism (7).

2. The jack static load experiment platform is characterized in that the measuring mechanism (7) comprises a vertical rod (71), a second sliding block (72) and a connecting portion (73), the second sliding block (72) is connected with the vertical rod (71) in a sliding mode, scales are marked on the vertical rod (71), one end of the connecting portion (73) is fixedly connected with the second sliding block (72), and the other end of the connecting portion is detachably connected with the material loading platform (2).

3. A jack static load test platform according to claim 1, wherein the driving unit (62) comprises a housing (621), a bidirectional screw (622) and a first motor (623), the bidirectional screw (622) comprises a first threaded part, a second threaded part and a connecting part (73), two ends of the bidirectional screw (622) are rotatably connected with the shell (621), one end of the bidirectional screw rod (622) penetrates out of the shell (621), the first motor (623) and one end of the bidirectional screw rod (622) penetrating out of the shell (621) are fixedly connected, a clapboard is arranged in the middle of the shell (621), the left sides of the two bearing plates (61) are provided with protruding parts (613), the two protruding parts (613) are respectively arranged at the two sides of the clapboard, and the two protruding portions (613) are respectively provided with threaded through holes for mating with the two threaded portions.

4. The jack static load experiment platform is characterized in that the lifting mechanism comprises four guide rods (8) and two hydraulic cylinders (9), the four guide rods (8) are fixedly connected with the workbench (1), through holes matched with the four guide rods (8) are formed in four corners of the first sliding block (5), and the two hydraulic cylinders (9) are fixedly connected with two sides of the bottom of the first sliding block (5).

5. The jack static load experiment platform is characterized in that the combining mechanism is a three-jaw chuck (10), the jaws of the three-jaw chuck (10) face downwards, the three-jaw chuck (10) is fixedly connected with the bottom of the material loading platform (2), and the three-jaw chuck (10) is provided with an adjusting opening.

6. A jack static load test platform according to claim 4, wherein when the value of the pressure sensor on the bearing plate (61) is zero, the hydraulic cylinder (9) is paused for a period of time and then moved downwards.

7. The static load experiment platform of the jack according to claim 1, wherein a stopwatch is further arranged on the working platform (1).

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