CN219532684U

CN219532684U - Pavement material does not have lateral limit intensity test piece forming device

Info

Publication number: CN219532684U
Application number: CN202320502569.2U
Authority: CN
Inventors: 李洪胜; 孙刚; 张宝峰; 李胜强; 刘畅; 赵辉; 白艳; 张占锋; 马琳; 孙永娜
Original assignee: Cangzhou Jingtong Engineering Detection Co ltd
Current assignee: Cangzhou Jingtong Engineering Detection Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-08-15
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses a pavement material unconfined strength test piece forming device which comprises a frame, wherein a plurality of guide rods are arranged on the frame, a supporting plate is arranged on the guide rods, a first driving device for driving the supporting plate to move up and down is arranged on the frame, a pressing plate is arranged on the guide rods, a die sleeve is arranged on the supporting plate, a blocking plate is arranged at the bottom of the die sleeve, a pressing column is arranged on the upper side of the die sleeve, a through hole is arranged on the pressing plate, a top edge is arranged at the top of the pressing column, the diameter of the top edge is larger than that of the through hole, a clamping edge is arranged on the die sleeve, and the diameter of the clamping edge is larger than that of the through hole. According to the utility model, the supporting plate moves upwards to enable the pressing column and the blocking plate to be matched to press materials in the die sleeve, the pressing column and the blocking plate can be inverted, the supporting plate drives the pressing column to move upwards to enable a test piece in the die sleeve to be ejected out of the die sleeve upwards, two functions of pressing and demoulding are realized, the complexity of equipment is not increased, the structure is simple, and the cost is low.

Description

Pavement material does not have lateral limit intensity test piece forming device

Technical Field

The utility model relates to the technical field of pavement material performance test, in particular to a pavement material unconfined strength test piece forming device.

Background

In order to ensure the durability of the pavement, continuous strength test is required to be carried out on the pavement material to test the optimal processing technology of the pavement material, the pavement material unconfined strength test piece is a cylindrical test piece, the test piece is formed by filling mineral aggregate into a die sleeve and then pressing the test piece, the performance test can be carried out by demolding the mineral aggregate through a demolding device after pressing, although the operation methods of pressing and demolding the mineral aggregate are simple and similar, the common pressing machine and demolding machine are still independent devices and are not mutually common, and manufacturers are required to manufacture the pavement material test piece and purchase the pressing machine and the demolding machine at the same time, so that the purchase cost and the maintenance investment are large, and the molding device with the pressing and demolding functions and simple structure and low cost is required.

Disclosure of Invention

The utility model aims to avoid the defects of the prior art and provides a pavement material unconfined strength test piece forming device, so that the defects in the prior art are effectively overcome.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a pavement material does not have lateral limit intensity test piece forming device, includes the frame, is provided with a plurality of guide bar in the frame, be provided with the layer board that can reciprocate on the guide bar, be provided with the first drive arrangement of drive layer board reciprocates in the frame, be provided with the clamp plate in the upside of layer board on the guide bar, the die sleeve has been placed on the layer board, and the bottom of die sleeve is provided with the closure plate, and the upside of die sleeve is provided with the pressure post that can insert in the die sleeve, be provided with the through-hole on the clamp plate, the aperture of through-hole is greater than the internal diameter of die sleeve, the top of pressure post is provided with the top edge, and the diameter of top edge is greater than the diameter of through-hole, be provided with the card edge on the die sleeve, the diameter of card edge is greater than the diameter of through-hole, the length of pressure post is not less than the length of die sleeve.

Further, the pressing plate can be arranged on the guide rod in a vertically movable mode, and a second driving device for driving the pressing plate to move up and down along the guide rod is arranged on the pressing plate.

Further, the pressing plate is provided with a plurality of rotating wheels matched with the guide rod, the rotating wheels are matched with the guide rod through threads, the rotating wheels are transmitted through a synchronous belt, the second driving device is a motor, and a driving wheel for driving the synchronous belt to rotate is arranged on an output shaft of the motor.

Further, the outer diameter of the die sleeve is smaller than the diameter of the through hole, and the distance from the clamping edge to the bottom of the die sleeve is not smaller than the thickness of the pressing plate.

Further, a positioning block is arranged in the center of the supporting plate, and a lower positioning groove is formed in the bottom of the blocking plate in a matched mode with the positioning block.

Further, an upper positioning groove is formed in the top of the pressing column in a matched mode.

Further, the bottom of clamp plate cooperation top edge is provided with the guide way, the card is along the diameter of equal with the top edge.

The technical scheme of the utility model has the following beneficial effects: according to the utility model, the supporting plate moves upwards to enable the pressing column and the blocking plate to be matched to press materials in the die sleeve, the pressing column and the blocking plate can be inverted, the supporting plate drives the pressing column to move upwards to enable a test piece in the die sleeve to be ejected out of the die sleeve upwards, two functions of pressing and demoulding are realized, the complexity of equipment is not increased, the structure is simple, and the cost is low.

Drawings

FIG. 1 is a schematic view showing a state of a pressed test piece according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic view showing the inverted state of the press stud, closure plate and die sleeve according to the embodiment of the present utility model;

FIG. 4 is a schematic diagram of a test piece in a demolded state according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-4, the molding device for the pavement material unconfined strength test piece according to the embodiment comprises a frame 1, wherein a plurality of guide rods 2 are arranged on the frame 1, a supporting plate 3 capable of moving up and down is arranged on the guide rods 2, a first driving device 31 for driving the supporting plate 3 to move up and down is arranged on the frame 1, a pressing plate 4 is arranged on the upper side of the supporting plate 3 on the guide rods 2, a die sleeve 5 is arranged on the supporting plate 3, a blocking plate 6 is arranged at the bottom of the die sleeve 5, a pressing column 7 capable of being inserted into the die sleeve 5 is arranged on the upper side of the die sleeve 5, a through hole 41 is arranged on the pressing plate 4, the aperture of the through hole 41 is larger than the inner diameter of the die sleeve 5, a top edge 71 is arranged at the top of the pressing column 7, the diameter of the top edge 71 is larger than the diameter of the through hole 41, a clamping edge 51 is arranged on the die sleeve 5, the diameter of the clamping edge 51 is larger than the diameter of the through hole 41, and the length of the pressing column 7 is not smaller than the length of the die sleeve 5; in this embodiment, the first driving device 31 is a hydraulic cylinder, the blocking plate 6 is in a step shape, and the middle part of the blocking plate 6 can be inserted into the die sleeve 5, so that mineral aggregate is prevented from being discharged at the bottom of the die sleeve 5 during pressing;

the pressing process is as follows: the blanking plate 6 is supported at the bottom of the die sleeve 5, the blanking plate 6 and the die sleeve 5 are placed on the supporting plate 3, mineral aggregate is added into the die sleeve 5, then the pressing column 7 is inserted into the upper side of the die sleeve 5, the first driving device 31 drives the supporting plate 3 to move upwards until the top edge 71 on the pressing column 7 moves upwards to be propped against the bottom of the pressing plate 4, and at the moment, the die sleeve 5 and the blanking plate 6 move upwards relative to the pressing column 7 when the supporting plate 3 moves upwards, so that the mineral aggregate in the die sleeve 5 is compressed;

the demoulding process is as follows: after mineral aggregate is compressed, the first driving device 31 drives the supporting plate 3 to move downwards, then the pressing column 7, the blocking plate 6 and the die sleeve 5 are inverted, the pressing column 7 is placed on the supporting plate 3, then the first driving device 31 drives the supporting plate 3 to move upwards until the clamping edge 51 on the die sleeve 5 is clamped at the outer side of the through hole 41, the die sleeve 5 stops moving, and the supporting plate 3 can push the test piece and the blocking plate out of the die sleeve 5 upwards through the pressing column 7 to realize demoulding of the test piece;

preferably, the pressing plate 4 is arranged on the guide rod 2 in a vertically movable manner, the pressing plate 4 is provided with a second driving device 42 for driving the pressing plate 4 to move vertically along the guide rod 2, when the pressing plate is pressed, after the pressing column 7 is placed in the die sleeve 5, the pressing column 7 can be held, and the second driving device 42 drives the pressing plate 4 to move downwards to limit the pressing column 7, so that the alignment of the pressing column 7 is realized, and the pressing column 7 and the die sleeve 5 are prevented from being damaged in a pressing manner; during demolding, the second driving device 42 can drive the pressing plate 4 to move downwards to align the pressing column 7 and the die sleeve 5;

preferably, the pressing plate 4 is provided with a plurality of rotating wheels 43 matched with the guide rod 2, the rotating wheels 43 are in threaded fit with the guide rod 2, the rotating wheels 43 are driven by a synchronous belt 44, the second driving device 42 is a motor, a driving wheel 45 for driving the synchronous belt 44 to rotate is arranged on an output shaft of the motor, the motor drives the driving wheel 45 to rotate, the driving wheel 45 drives the rotating wheels 43 to synchronously rotate by the synchronous belt 44, and the rotating wheels 43 are in threaded fit with the guide rod 2, so that the pressing plate 4 moves on the guide rod 2;

preferably, the outer diameter of the die sleeve 5 is smaller than the diameter of the through hole 41, the distance from the clamping edge 51 to the bottom of the die sleeve 5 is not smaller than the thickness of the pressing plate 4, when the die sleeve 5 is inverted during demolding operation, the bottom of the die sleeve 5 can extend upwards into the through hole 41 on the pressing plate 4 when the die sleeve 5 moves upwards, when the clamping edge 51 abuts against the bottom of the pressing plate 4, the bottom of the die sleeve 5 can extend upwards to a position not lower than the upper surface of the pressing plate 4, and the test piece is conveniently ejected upwards by the pressing column 7 for taking a test piece;

preferably, the center of the supporting plate 3 is provided with a positioning block 31, the bottom of the plugging plate 6 is provided with a lower positioning groove 61 in cooperation with the positioning block 31, and the plugging plate 6 is positioned and centered in cooperation with the positioning block 31 through the lower positioning groove 61, so that the jacking force of the supporting plate 3 to the plugging plate 6 and the die sleeve 5 is uniform; in this embodiment, the positioning block 31 may be a bolt screwed on the supporting plate 3;

preferably, the top of the pressing column 7 is provided with an upper positioning groove 72 in cooperation with the positioning block 31, and in the demolding process, the pressing column 7 can be positioned in cooperation with the positioning block 31 through the upper positioning groove 72 after being inverted;

preferably, the bottom of clamp plate 4 cooperates the top edge 71 and is provided with guide slot 46, and the diameter of card edge 51 and top edge 71 equals, and during the suppression, the top edge 71 accessible guide slot 46 of clamp column 7 leads, makes things convenient for the position alignment of clamp column 7, and during the drawing of patterns, the card edge 51 accessible guide slot 46 of die sleeve 5 leads, makes things convenient for the position alignment of die sleeve 5.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a pavement material does not have lateral limit intensity test piece forming device which characterized in that: including the frame, be provided with a plurality of guide bar in the frame, be provided with the layer board that can reciprocate on the guide bar, be provided with the first drive arrangement of drive layer board reciprocates in the frame, be provided with the clamp plate in the upside of layer board on the guide bar, the die sleeve has been placed on the layer board, and the bottom of die sleeve is provided with the closure plate, and the upside of die sleeve is provided with the spliced pole that can insert in the die sleeve, be provided with the through-hole on the clamp plate, the aperture of through-hole is greater than the internal diameter of die sleeve, the top of spliced pole is provided with the top along, and the diameter along is greater than the diameter of through-hole on the die sleeve, the diameter along the card is greater than the diameter of through-hole, the length of spliced pole is not less than the length of die sleeve.

2. The pavement material unconfined strength test piece forming device according to claim 1, wherein: the pressing plate can be arranged on the guide rod in a vertically movable mode, and a second driving device for driving the pressing plate to move up and down along the guide rod is arranged on the pressing plate.

3. The pavement material unconfined strength test piece forming device according to claim 2, wherein: the pressing plate is provided with a plurality of rotating wheels matched with the guide rod, the rotating wheels are in threaded fit with the guide rod, the rotating wheels are in transmission through a synchronous belt, the second driving device is a motor, and a driving wheel for driving the synchronous belt to rotate is arranged on an output shaft of the motor.

4. The pavement material unconfined strength test piece forming device according to claim 1, wherein: the outer diameter of the die sleeve is smaller than the diameter of the through hole, and the distance from the clamping edge to the bottom of the die sleeve is not smaller than the thickness of the pressing plate.

5. The pavement material unconfined strength test piece forming device according to claim 1, wherein: the center of the supporting plate is provided with a positioning block, and the bottom of the blocking plate is provided with a lower positioning groove in cooperation with the positioning block.

6. The pavement material unconfined strength test piece forming device according to claim 5, wherein: the top of the pressing column is provided with an upper positioning groove in cooperation with the positioning block.

7. The pavement material unconfined strength test piece forming device according to claim 1, wherein: the bottom cooperation top edge of clamp plate is provided with the guide way, the card is along the diameter equal with the top edge.