CN110926977A - Vertical loading device with horizontal sliding function - Google Patents
Vertical loading device with horizontal sliding function Download PDFInfo
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- CN110926977A CN110926977A CN201911266891.4A CN201911266891A CN110926977A CN 110926977 A CN110926977 A CN 110926977A CN 201911266891 A CN201911266891 A CN 201911266891A CN 110926977 A CN110926977 A CN 110926977A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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Abstract
The invention provides a vertical loading device with a horizontal sliding function, which comprises: the base is fixedly provided with a sliding rail, and a groove is formed in the sliding rail; the sliding block is provided with a circular opening on a rib plate of the sliding block, and the bearing shaft penetrates through the opening so that the sliding block is supported on the bearing shaft; a ring, wherein a jack is tightly attached and installed in the ring; two opposite check blocks extend upwards along the outer surface of the ring, and arc-shaped transmission blocks extend out of the upper ends of the extending parts of the check blocks towards the inner side of the ring; the connecting sleeve comprises an upper part and a lower part which are fixedly welded, the upper part is a hollow square frame body, the shape of the inner side surface of the conducting block is tightly attached to the outer side surface of the hollow cylinder, and therefore when the ring is horizontally displaced, the horizontal displacement can be synchronously transmitted to the connecting sleeve and the pressure sensor in an equivalent manner through the conducting block.
Description
Technical Field
The invention relates to the field of experimental loading equipment, in particular to a vertical loading device with a horizontal sliding function.
Background
Large-scale, long-distance displacements are required during the experimental studies of large quantities of concrete, bridges, steel structures and buildings, and such displacements need to be performed under stress. In recent years, similar experimental research along with building modularization progresses is more extensive, and the demand contradiction is more prominent.
In general, similar tests are preferably selected as a test scheme for a 'spherical hinge support' which is very mature in technology and is widely applied in test design, the vertical loading force which can be borne by the hinge support is 40 tons (400KN), and the maximum range can reach 50 MM. However, the design of the central part of the ball is a semi-sphere, which causes a corner when the ball is displaced, resulting in poor linearity and poor stability. In addition, because the 'spherical hinge support' is a non-connection interface between the shaped product and other test equipment and facilities, the expansibility is poor.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the vertical loading device which can move synchronously, is safe and stable, has good expansibility and has a horizontal sliding function.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a vertical loading device with a horizontal sliding function comprises:
the sliding rail is fixedly arranged on the base, a groove is formed in the sliding rail, the rolling bearings are arranged in the groove and can roll back and forth along the groove, and the rolling bearings in opposite positions are connected through bearing shafts;
the sliding block is provided with a circular opening on a rib plate of the sliding block, and the bearing shaft penetrates through the opening so that the sliding block is supported on the bearing shaft;
the ring is fixedly arranged at the center of the upper top surface of the sliding block, and a jack is tightly attached and installed in the ring; two opposite check blocks extend upwards along the outer surface of the ring, the check blocks are positioned at two ends of the diameter of the ring and are welded and fixed on the outer surface of the ring, and the upper end of the extending part of the check blocks extends towards the inner side of the ring and is provided with an arc-shaped transmission block;
the connecting sleeve comprises an upper part and a lower part which are fixedly welded, the upper part is a hollow square frame body, shaft holes are formed in two ends of the hollow square frame body, and the top roller is rotatably fixed in the shaft holes through a roller shaft; the lower part of the connecting sleeve is a hollow cylinder with a downward opening, a pressure sensor is arranged in the hollow cylinder, the lower end of the pressure sensor is supported on a jack, and the upper end of the pressure sensor is pressed on the upper top surface of the hollow cylinder with a sealed upper end; the pressure sensor is seamlessly sleeved in the hollow cylinder, and the upper top surface of the pressure sensor is pressed against the lower surface of the sealing end of the hollow cylinder;
the shape of the inner side surface of the conducting block is tightly attached to the outer side surface of the hollow cylinder, so that when the ring is horizontally displaced, the horizontal displacement can be synchronously transmitted to the connecting sleeve and the pressure sensor in an equivalent manner through the conducting block.
Furthermore, a rotating bearing is sleeved outside the roll shaft, and the top roll is sleeved on the rotating bearing.
Furthermore, the upper end of the extending part of the stop block is provided with a position adjusting bolt, the conducting block is fixed on the stop block through the position adjusting bolt, and the position adjusting bolt can be screwed in front and back to adjust the attaching degree of the conducting block and the hollow cylinder.
Furthermore, two ends of each sliding rail are provided with stop pins, and the stop pins limit the maximum rolling distance of the rolling bearing on the sliding rail.
Furthermore, the base is provided with a fixing hole, and the base can be fixed on the test piece through the fixing hole during the experiment.
Furthermore, the sliding block is in a double-rib T shape, and the double ribs of the T shape are respectively and vertically welded on the wing plates.
Furthermore, a vertical opening is formed in the ring, and a hydraulic system of the jack conducts working media.
Further, there are four rolling bearings.
Further, under the condition of 5-100 tons of stress, the maximum range of the loading device reaches 2000 MM.
On the other hand, the application also protects the application of the vertical loading device with the horizontal sliding function in the quasi-dynamic test of the reinforced concrete pier column model.
Compared with the prior art, the invention has the following beneficial effects:
the vertical loading device with the horizontal sliding function breaks through the technical difficulty of large-range horizontal displacement under the working condition of large stress (load), and can complete the movement within the maximum range of 2000MM under the condition of stress of 5-100 tons. And ensures low straightness error, minimal damping and high stability. The device can be effectively connected with test equipment and facilities such as a hydraulic jack, a pressure sensor and the like, is safe and stable, and has good expansibility.
Drawings
Fig. 1 is a schematic perspective view of a vertical loading device with a horizontal sliding function according to an embodiment of the present invention;
fig. 2 is a front view of a vertical loading device with a horizontal sliding function according to an embodiment of the present invention;
fig. 3 is a top view of a vertical loading device with a horizontal sliding function according to an embodiment of the present invention;
fig. 4 is a front view of a vertical loading device with a horizontal sliding function according to an embodiment of the present invention, which is used for a quasi-dynamic test of a reinforced concrete pier column model.
Detailed Description
The present invention is further illustrated by the following figures and examples, which include, but are not limited to, the following examples.
The vertical loading device with the horizontal sliding function, as shown in fig. 1-3, comprises:
the base 1, fixed two slide rails 2 that are provided with on the base 1, all be provided with recess 3 in every slide rail 2, antifriction bearing settles in this recess 3 and can roll along recess 3 back-and-forth, and preferably, antifriction bearing can have a plurality ofly, for example four. Two rolling bearings at opposite positions on the two slide rails are connected through a bearing shaft.
The sliding block 4 is in a double-rib T shape, the double ribs of the T shape are respectively and vertically welded on the wing plate, each rib plate of the sliding block 4 is provided with a circular opening, and the bearing shaft penetrates through the openings so that the sliding block is supported on the bearing shaft;
the ring 5 is fixedly arranged at the center of the upper top surface of the sliding block 4, a jack 6 is tightly attached and installed in the ring 5, and a vertical opening is formed in the ring 5 and used for a hydraulic system of the jack 6 to conduct working media; the periphery of the ring 5 is also provided with two opposite stop blocks 7 which are welded and fixed on the outer surface of the ring perpendicular to the diameter of the same ring and extend upwards to a proper length, and the upper ends of the extending parts of the stop blocks extend towards the inner side of the ring to form arc-shaped conducting blocks 8.
The connecting sleeve 9 comprises an upper part and a lower part which are fixedly welded, the upper part is a hollow square frame body, shaft holes are formed in two ends of the hollow square frame body, and the top roller 10 is rotatably fixed in the shaft holes through a roller shaft; the lower part of the connecting sleeve 9 is a hollow cylinder with an opening at one end, the opening of the hollow cylinder faces downwards, the pressure sensor is sleeved in the hollow cylinder in a seamless mode, and the top surface of the pressure sensor is pressed against the lower surface of the sealing end of the hollow cylinder;
the lower end of the pressure sensor is supported on the jack, and the upper end of the pressure sensor is pressed on the connecting sleeve;
the shape of the inner side surface of the transmission block 8 is tightly attached to the outer side surface of the hollow cylinder, so that when the ring 5 is horizontally displaced, the horizontal displacement can be synchronously transmitted to the connecting sleeve 9 and the pressure sensor in an equivalent manner through the transmission block 8.
The roll shaft is sleeved with a rotating bearing, and the top roll is sleeved on the rotating bearing. The upper end screw hole of the extending part of the stop block, the conducting block is fixed on the stop block through a position adjusting bolt 11, the position adjusting bolt 11 can be screwed in front and back, and the attaching degree of the conducting block 8 and the hollow cylinder is adjusted. Stop pins are arranged at two ends of each sliding rail 2, and the stop pins limit the maximum rolling distance of the rolling bearing on the sliding rail. Be equipped with fixed orifices 12 on the base, during the experiment, accessible fixed orifices 12 fix the base on the test piece.
In a specific embodiment of the present application, as shown in fig. 4, the vertical loading device with horizontal sliding function of the present application is used for a dynamic simulation test of a reinforced concrete pier column model, so as to observe a failure phenomenon and a failure mode of the reinforced concrete pier column model under the action of low-cycle repeated load, and a deformation and failure mechanism of a plastic failure region of the reinforced concrete pier column model.
First, the pier specimen 13 is fixed to the ground foundation 19 by the fixing beam 14 and the anchor bolt/nut 15, and the actuator 16 is connected to the pier specimen 13 by a special connecting tool 17. The vertical loading device with the horizontal sliding function is connected with the pier test piece 13 through the pre-embedded screws of the test piece, and the upper portion of the vertical loading device is provided with a counter-force top plate 18 (the connection portion is simplified).
Secondly, through the work of actuator 16, produce the power (F1) and the horizontal displacement of push-and-pull, the vertical loading device that has the horizontal slip function of this application accessible slider 4 (with the help of antifriction bearing) horizontal displacement in the slide rail this moment to just having guaranteed that the power of vertical direction (F2) is followed the synchronous horizontal displacement of test piece all the time, the size, the direction of power keep unchanged.
The vertical loading device with the horizontal sliding function adopts a novel sliding guide type design, and can complete the movement of 2000MM in the maximum range under the condition of 5-100 tons of stress. And ensures low straightness error, minimal damping and high stability. The device can be effectively connected with test equipment and facilities such as a hydraulic jack, a pressure sensor and the like, is safe and stable, and has good expansibility.
The invention is well implemented in accordance with the above-described embodiments. It should be noted that, based on the above design principle, even if some insubstantial modifications or tints are made based on the disclosure of the present invention, the spirit of the adopted technical solution is the same as the present invention, and therefore, the technical solution is also within the scope of the present invention.
Claims (10)
1. A vertical loading device with a horizontal sliding function is characterized by comprising:
the rolling bearing device comprises a base (1), wherein a sliding rail (2) is fixedly arranged on the base (1), a groove (3) is formed in the sliding rail (2), a rolling bearing is arranged in the groove (3) and can roll back and forth along the groove (3), and the rolling bearings in opposite positions are connected through a bearing shaft;
the sliding block (4), the rib plate of the sliding block (4) is provided with a circular opening, and the bearing shaft passes through the opening so that the sliding block is supported on the bearing shaft;
the ring (5) is fixedly arranged at the center of the upper top surface of the sliding block (4), and a jack (6) is tightly attached and installed in the ring (5); two opposite check blocks (7) extend upwards along the outer surface of the ring (5), the check blocks (7) are positioned at two ends of the diameter of the ring and are welded and fixed on the outer surface of the ring, and an arc-shaped transmission block (8) extends from the upper end of the extending part of the check blocks (7) towards the inner side direction of the ring;
the connecting sleeve (9), the connecting sleeve (9) includes upper and lower two parts fixed by welding, the upper part is a hollow square frame body, both ends of the hollow square frame body are provided with shaft holes, and the top roller (10) is fixed in the shaft holes rotatablely through a roller shaft; the lower part of the connecting sleeve (9) is a hollow cylinder with a downward opening, a pressure sensor is arranged in the hollow cylinder, the lower end of the pressure sensor is supported on a jack, and the upper end of the pressure sensor is pressed on the upper top surface of the hollow cylinder with a sealed upper end; the pressure sensor is seamlessly sleeved in the hollow cylinder, and the upper top surface of the pressure sensor is pressed against the lower surface of the sealing end of the hollow cylinder;
the shape of the inner side surface of the transmission block (8) is tightly attached to the outer side surface of the hollow cylinder, so that when the ring (5) is horizontally displaced, the horizontal displacement can be synchronously transmitted to the connecting sleeve (9) and the pressure sensor in an equivalent manner through the transmission block (8).
2. The vertical loading device with the horizontal sliding function according to claim 1 or 2, wherein the roll shaft is externally sleeved with a rotating bearing, and the top roll (10) is sleeved on the rotating bearing.
3. The vertical loading device with the horizontal sliding function according to claim 1 or 2, wherein the upper end of the extending part of the stopper (7) is provided with a position adjusting bolt, and the transmission block (8) is fixed on the stopper (7) through the position adjusting bolt, and the position adjusting bolt can be screwed forward and backward to adjust the fitting degree of the transmission block (8) and the hollow cylinder.
4. Vertical loading device with horizontal sliding function according to claim 1 or 2, characterized in that stop pins are provided at both ends of each slide rail, which limit the maximum rolling distance of the rolling bearing on the slide rail (2).
5. The vertical loading device with the horizontal sliding function according to any one of claims 1 to 4, wherein the base is provided with a fixing hole (12) through which the base can be fixed on the test piece during the experiment.
6. The vertical loading device with horizontal sliding function according to claim 1 or 2, characterized in that the sliding block (4) is in the shape of a double-rib T, and the double ribs of the T are respectively welded vertically on the wing plates.
7. The vertical loading device with horizontal sliding function according to claim 1 or 2, characterized in that the ring (5) is provided with a vertical opening for the hydraulic system of the jack (6) to conduct the working medium.
8. The vertical loading device with horizontal sliding function according to claim 1 or 2, wherein there are four rolling bearings.
9. The vertical loading device with horizontal sliding function according to claim 1 or 2, characterized in that the maximum range of the loading device is up to 2000MM under the condition of 5-100 tons of force.
10. Use of the vertical loading device with the horizontal sliding function according to any one of claims 1 to 9 in a pseudo-dynamic test of a column model of a reinforced concrete pier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266891.4A CN110926977B (en) | 2019-12-11 | 2019-12-11 | Vertical loading device with horizontal sliding function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266891.4A CN110926977B (en) | 2019-12-11 | 2019-12-11 | Vertical loading device with horizontal sliding function |
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| CN110926977A true CN110926977A (en) | 2020-03-27 |
| CN110926977B CN110926977B (en) | 2021-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124620A (en) * | 2023-04-10 | 2023-05-16 | 西南交通大学 | Test equipment and test method for pier falling stone impact and water and sand abrasion |
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| CN110926977B (en) | 2021-06-29 |
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