CN211553613U - Bridge beam supports presses and cuts testing machine - Google Patents
Bridge beam supports presses and cuts testing machine Download PDFInfo
- Publication number
- CN211553613U CN211553613U CN202020250458.3U CN202020250458U CN211553613U CN 211553613 U CN211553613 U CN 211553613U CN 202020250458 U CN202020250458 U CN 202020250458U CN 211553613 U CN211553613 U CN 211553613U
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Abstract
The utility model provides a bridge beam supports compression shear test machine, relate to the mechanical stress test field, hydraulic means and base including the interval setting, fixed holding down plate and the horizontal shear system of being equipped with on the base, the last fixed a plurality of stands that are equipped with of holding down plate, the upper end and the hydraulic means fixed connection of stand, it has the piston rod to stretch out downwards among the hydraulic means, install load sensor on the piston rod, the lower extreme fixedly connected with top board of piston rod, top board and stand sliding connection, all fixed being equipped with the positioning disk on top board and the holding down plate, two positioning disks face-to-face set up, the protruding top that is equipped with in center of positioning disk. The utility model utilizes the thimble to position the bridge bearing, and the baffle is added to further stop and limit the contact end of the bridge bearing and the top, so as to avoid the center deviation of the test piece under the horizontal shearing force; the horizontal shearing system is supported by the supporting arm on the base independently, so that the vertical loading part is not influenced when tensile force is applied, and the test data is more reliable.
Description
Technical Field
The utility model belongs to the technical field of mechanical stress test and specifically relates to a bridge beam supports presses and cuts testing machine.
Background
The bridge support interjacent testing machine generally comprises a vertical loading system, a horizontal shearing system and a corner system, and is used for simulating bridge weight and detecting the force borne by a test piece through the matching of the systems. After a horizontal shearing system applies tension, a test piece is easy to deviate from the original position under the action of the tension, and the center deviation of the test piece can cause the distortion of displacement acquisition data to influence the test result.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned condition, for overcoming prior art's defect, the utility model aims at providing a bridge beam supports presses and cuts testing machine adds to the test piece and holds and the center location, avoids the test piece to take place the center skew under horizontal shear force.
The bridge support compression-shear testing machine is characterized in that a lower pressing plate and a horizontal shearing system are fixedly arranged on the base, a plurality of stand columns are fixedly arranged on the lower pressing plate, the upper ends of the stand columns are fixedly connected with the hydraulic device, a piston rod extends downwards in the hydraulic device, a load sensor is mounted on the piston rod, an upper pressing plate is fixedly connected to the lower end of the piston rod and is in sliding connection with the stand columns, positioning discs are fixedly arranged on the upper pressing plate and the lower pressing plate respectively, the two positioning discs are arranged face to face, and the center of each positioning disc is convexly provided with a top point.
Preferably, the positioning plate is fixedly arranged on the positioning plate, positioning grooves matched with the positioning plate are formed in the upper pressing plate and the lower pressing plate, and the upper positions and the lower positions of the two positioning grooves correspond to each other.
Preferably, the positioning disk is further provided with a baffle in a matched manner, the baffle comprises a vertical blocking portion and a horizontal installation portion, a sliding block is fixedly arranged on the installation portion, installation holes which are arranged in a staggered manner with the sliding block are further formed in the installation portion, and sliding grooves matched with the sliding block and threaded holes which are arranged in a corresponding manner with the installation holes are formed in the upper pressing plate and the lower pressing plate.
Preferably, horizontal shearing system sets up two support arms on the base including going up and down, and two support arms are located the both sides of holding down plate, all installs the pneumatic cylinder on two support arms, and all detachable is connected with same pulling force board on the telescopic link of two pneumatic cylinders, and the fixed horizontally shear plate that is equipped with on the pulling force board, the shear plate stretches into two between the positioning disk.
Preferably, the base is connected with the lead screw in a rotating manner, the support arm sleeve is arranged on the lead screw, a vertical fixing groove is formed in the support arm, a fixing block is connected to the fixing groove in a sliding manner, the lower end of the fixing block is fixed to the base, and the lower end of the lead screw extends out of the base downwards and is fixedly connected with a knob.
Preferably, a notch is formed in the side edge of the base, and the knob is located in the notch.
The utility model has the advantages that: compared with the innovation point of arranging a positioning disc in the prior art, the thimble is used for positioning the bridge bearing, and the baffle is used for further stopping and limiting the end of the bridge bearing, which is in contact with the tip, so that the test piece is prevented from deviating from the center under the horizontal shearing force; secondly, the horizontal shearing system is supported by the support arm on the base independently, and the vertical loading part is not affected when tensile force is applied, so that the test data are more reliable.
Drawings
FIG. 1 is a schematic structural view of the present invention, in which a horizontal shearing system is not shown;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of a positioning plate;
FIG. 4 is a schematic view of a baffle structure;
fig. 5 is a schematic structural view of the upper platen.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in figures 1-5, the bridge bearing compression shear testing machine comprises a hydraulic device 1 and a base 6 which are arranged at intervals, wherein the hydraulic device 1 is positioned above the base 6, it is characterized in that a lower pressing plate 5 and a horizontal shearing system are fixedly arranged on a base 6, a plurality of upright posts 3 are fixedly arranged on the lower pressing plate 5, the upper ends of the upright posts 3 are fixedly connected with a hydraulic device 1, a piston rod 7 extends downwards from the hydraulic device 1, a load sensor 8 is arranged on the piston rod 7, the lower end of the piston rod 7 is fixedly connected with an upper pressure plate 2, the upper pressure plate 2 is connected with the upright post 3 in a sliding way, the hydraulic device 1 provides power support for the piston rod 7, the piston slides to drive the upper pressure plate 2 to move up and down, the upright post 3 plays a role in guiding the upper pressure plate 2, positioning discs 9 are fixedly arranged on the upper pressing plate 2 and the lower pressing plate 5, the two positioning discs 9 are arranged face to face, and a tip 91 is convexly arranged at the center of each positioning disc 9. The bridge support is divided into a plate type or basin type rubber support, when the bridge support is clamped by the upper pressing plate 2 and the lower pressing plate 5, the tip 91 can be embedded into the bridge support, and in the test process, after the horizontal shearing system applies pulling force, the bridge support keeps the central position unmovable under the reinforcing fixation of the tip 91.
The positioning plate 9 is fixedly provided with a positioning plate 92, the upper press plate 2 and the lower press plate 5 are provided with positioning grooves 21 matched with the positioning plate 92, and the upper and lower positions of the two positioning grooves 21 correspond to each other. In order to ensure that the two positioning grooves 21 are opened correspondingly, when the positioning grooves 21 are machined, the upper press plate 2 and the lower press plate 5 can be stacked and then the two positioning grooves 21 are machined simultaneously, the positioning plate 92 of the positioning plate 9 above is upwards inserted into the positioning groove 21 of the upper press plate 2, the positioning plate 92 of the positioning plate 9 below is inserted into the positioning groove 21 of the lower press plate 5, and then the two positioning plates 9 are respectively fixed on the upper press plate 2 and the lower press plate 5, so that the positioning and the installation of the positioning plates 9 are completed, the two positioning plates 9 are identical, and the positions of the centers 91 are corresponding.
The positioning disk 9 is further provided with a baffle 10 in a matched manner, the baffle 10 comprises a vertical blocking portion 101 and a horizontal installation portion 102, a sliding block 103 is fixedly arranged on the installation portion 102, installation holes which are arranged in a staggered manner with the sliding block 103 are further formed in the installation portion, and a sliding groove 22 matched with the sliding block 103 and a threaded hole 23 which is correspondingly formed in the installation holes are formed in the upper pressing plate 2 and the lower pressing plate 5. The baffle 10 is in sliding connection with the upper pressure plate 2 or the lower pressure plate 5 through the sliding groove 22 and the sliding block 103, the upper pressure plate 2 corresponds to the threaded holes in the lower pressure plate 5 one by one, the position of the baffle 10 is adjusted and determined according to the diameter of the test piece, the baffle 10 is positioned at the edge of the test piece, the limit effect is exerted on one end, in contact with the tip 91, of the test piece, the displacement of the test piece under the tension of the shear plate 14 is further limited, the baffle 10 is in threaded connection with the upper pressure plate 2 or the lower pressure plate 5, and the two baffles 10 are positioned in the same vertical plane after being installed; the height of the blocking part 101 cannot interfere with a horizontal shearing system, and the functions can be completed; it should be noted that the sliding direction of the baffle 10 is the same as the tensile force applied to the test piece, and is located near the side of the horizontal shear system applying force to the test piece, so as to better prevent the test piece from being displaced when the test piece is deformed.
Horizontal shear system sets up two support arms 11 on base 6 including going up and down, and two support arms 11 are located the both sides of holding down plate 5, all installs pneumatic cylinder 12 on two support arms 11, and all detachable on two pneumatic cylinder 12's the telescopic link is connected with same pulling force board 13, and fixed being equipped with horizontally shear plate 14 on pulling force board 13, shear plate 14 stretches into two between the positioning disk 9. Two pneumatic cylinders 12 synchronous working, the extrusion frictional force of the thrust of pneumatic cylinder 12 and test piece is born simultaneously to the pulling force board 13, still installs force cell on the shear plate 14 and detects experimental data, compares and utilizes the horizontal reaction force of testing machine itself to the reaction rod to support horizontal shear system among the ordinary pressure shear testing machine, and the horizontal pulling force that alone utilizes support arm 11 to bear can not influence vertical loading process.
The rotary screw is connected to the base 6 in a rotating mode, the support arm 11 is sleeved on the screw, a vertical fixing groove 15 is formed in the support arm 11, a fixing block 17 is connected to the fixing groove 15 in a sliding mode, the lower end of the fixing block 17 is fixed to the base 6, and the lower end of the screw extends out of the base 6 downwards and is fixedly connected with a knob 16. The height of different test pieces is different, so that the horizontal shearing system is required to have the function of adjusting the shearing force position, the screw rod of the rotary knob 16 rotates together, the supporting arm 11 can only slide up and down and cannot rotate under the limitation of the fixed block 17, so that the supporting arm 11 can move up and down when the screw rod rotates, the height of the shearing plate 14 is adjusted, the tension plate 13 is installed after the two hydraulic cylinders 12 are adjusted, and the tension plate 13 can be installed only when the two hydraulic cylinders 12 are consistent in height, so that the shearing plate 14 is ensured to be in the horizontal position; the height is not limited to be clearly indicated by indicating the scale on the fixed block 17, and the two hydraulic cylinders 12 are positioned at the same height by finely adjusting the knob 16.
The side of base 6 is seted up jaggedly, knob 16 is located the breach. The height of the supporting arm 11 is only debugged once in each test, in order to prevent the shearing plate 14 from swinging up and down due to the fact that the knob 16 is touched in other operation processes, the knob 16 is hidden in a notch in the lower part of the base 6, and an operator only needs to debug the supporting arm 11 by stretching a hand into the notch to rotate the knob 16 to debug, so that the accuracy of a test result is ensured.
When the utility model is used, two bridge supports are respectively placed between the upper pressure plate 2 and the shear plate 14 and between the lower pressure plate 5 and the shear plate 14, the hydraulic device 1 is started to apply load to the bridge supports, after the pressure detected by the load sensor 8 reaches the experimental value, the hydraulic cylinder 12 in the horizontal shearing system is started, and the shear plate 14 pulls the two bridge supports outwards; the rotation angle testing device 4 is used for detecting the rotation angle testing force, which is the prior art and will not be described in detail herein.
The utility model has the advantages that: compared with the innovation point of arranging a positioning disc in the prior art, the thimble is used for positioning the bridge bearing, and the baffle is used for further stopping and limiting the end of the bridge bearing, which is in contact with the tip, so that the test piece is prevented from deviating from the center under the horizontal shearing force; secondly, the horizontal shearing system is supported by the support arm on the base independently, and the vertical loading part is not affected when tensile force is applied, so that the test data are more reliable.
The above-mentioned embodiments are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design concept of the present invention should be included in the protection scope defined by the claims of the present invention.
Claims (6)
1. A bridge bearing compression shear testing machine comprises a hydraulic device (1) and a base (6) which are arranged at intervals, wherein the hydraulic device (1) is positioned above the base (6), it is characterized in that a lower pressing plate (5) and a horizontal shearing system are fixedly arranged on the base (6), a plurality of upright posts (3) are fixedly arranged on the lower pressing plate (5), the upper ends of the upright posts (3) are fixedly connected with a hydraulic device (1), a piston rod (7) extends downwards from the hydraulic device (1), a load sensor (8) is arranged on the piston rod (7), the lower end of the piston rod (7) is fixedly connected with an upper pressure plate (2), the upper pressure plate (2) is connected with the upright post (3) in a sliding way, positioning discs (9) are fixedly arranged on the upper pressure plate (2) and the lower pressure plate (5), the two positioning discs (9) are arranged face to face, and a tip (91) is convexly arranged at the center of each positioning disc (9).
2. The bridge support compression shear testing machine according to claim 1, wherein a positioning plate (92) is fixedly arranged on the positioning plate (9), positioning grooves (21) matched with the positioning plate (92) are formed in the upper pressing plate (2) and the lower pressing plate (5), and the two positioning grooves (21) correspond to each other in upper and lower positions.
3. The bridge bearer compression-shear testing machine according to claim 2, characterized in that the positioning disk (9) is further provided with a baffle (10) in a matching manner, the baffle (10) comprises a vertical blocking portion (101) and a horizontal mounting portion (102), a sliding block (103) is fixedly arranged on the mounting portion (102), mounting holes staggered with the sliding block (103) are further formed in the mounting portion, and a sliding groove (22) matched with the sliding block (103) and a threaded hole (23) correspondingly arranged in the mounting holes are formed in the upper pressing plate (2) and the lower pressing plate (5).
4. The bridge support compression shear testing machine according to claim 1, wherein the horizontal shear system comprises two supporting arms (11) which are arranged on the base (6) in a lifting mode, the two supporting arms (11) are located on two sides of the lower pressing plate (5), hydraulic cylinders (12) are installed on the two supporting arms (11), the telescopic rods of the two hydraulic cylinders (12) can be detachably connected with the same tension plate (13), a horizontal shear plate (14) is fixedly arranged on the tension plate (13), and the shear plate (14) extends into a position between the two positioning discs (9).
5. The bridge support compression shear testing machine according to claim 4, wherein a screw rod is rotatably connected to the base (6), the support arm (11) is sleeved on the screw rod, a vertical fixing groove (15) is formed in the support arm (11), a fixing block (17) is slidably connected to the fixing groove (15), the lower end of the fixing block (17) is fixed to the base (6), and the lower end of the screw rod extends downwards out of the base (6) and is fixedly connected with a knob (16).
6. The bridge support compression shear test machine according to claim 5, wherein a notch is formed in the side edge of the base (6), and the knob (16) is located in the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020250458.3U CN211553613U (en) | 2020-03-04 | 2020-03-04 | Bridge beam supports presses and cuts testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020250458.3U CN211553613U (en) | 2020-03-04 | 2020-03-04 | Bridge beam supports presses and cuts testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211553613U true CN211553613U (en) | 2020-09-22 |
Family
ID=72493859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020250458.3U Expired - Fee Related CN211553613U (en) | 2020-03-04 | 2020-03-04 | Bridge beam supports presses and cuts testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211553613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326548A (en) * | 2020-10-15 | 2021-02-05 | 山东三越仪器有限公司 | Abrasion pressure shear testing machine |
-
2020
- 2020-03-04 CN CN202020250458.3U patent/CN211553613U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326548A (en) * | 2020-10-15 | 2021-02-05 | 山东三越仪器有限公司 | Abrasion pressure shear testing machine |
| CN112326548B (en) * | 2020-10-15 | 2024-04-26 | 山东三越仪器有限公司 | Abrasion compression shear testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200922 |