CN222280357U - Test device for pre-buried channel shearing work load test - Google Patents
Test device for pre-buried channel shearing work load test Download PDFInfo
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- CN222280357U CN222280357U CN202420765997.9U CN202420765997U CN222280357U CN 222280357 U CN222280357 U CN 222280357U CN 202420765997 U CN202420765997 U CN 202420765997U CN 222280357 U CN222280357 U CN 222280357U
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- 238000012360 testing method Methods 0.000 title claims abstract description 192
- 238000010008 shearing Methods 0.000 title claims description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
本实用新型公开了一种用于预埋槽道剪切工作载荷试验的试验装置，包括：试验机，试验机底部的下钳口上固定有试验台；混凝土试块，混凝土试块放置在试验台上，混凝土试块一侧设有槽道，槽道上固定有螺栓；剪切板，剪切板套固在螺栓上，并通过锁紧螺母锁紧固定；柔性传力组件，柔性传力组件一端与试验机顶部的上钳口连接，另一端与剪切板连接；夹紧工装，夹紧工装安装在试验台顶端面上，用于将混凝土试块进行固定。该装置将传统施加的压应力载荷更改为向上的拉应力载荷，并通过柔性传力组件连接上钳口和剪切板，使上钳口和剪切板之间为柔性力传导，即使剪切板发生变形，也不会损坏上钳口。
The utility model discloses a test device for shear working load test of embedded grooves, comprising: a test machine, a test bench is fixed on the lower jaw at the bottom of the test machine; a concrete test block, the concrete test block is placed on the test bench, a groove is provided on one side of the concrete test block, and bolts are fixed on the groove; a shear plate, the shear plate is fixed on the bolt and locked by a locking nut; a flexible force transmission component, one end of the flexible force transmission component is connected to the upper jaw at the top of the test machine, and the other end is connected to the shear plate; a clamping fixture, the clamping fixture is installed on the top surface of the test bench and is used to fix the concrete test block. The device changes the traditional applied compressive stress load into an upward tensile stress load, and connects the upper jaw and the shear plate through the flexible force transmission component, so that the upper jaw and the shear plate are flexible force-conducted, and even if the shear plate is deformed, the upper jaw will not be damaged.
Description
Technical Field
The utility model relates to the technical field of pre-buried channel detection, in particular to a test device for a pre-buried channel shearing work load test.
Background
The channel is a steel structural member applied to railways, tunnels, bridges, rolling stock, nuclear power plants and house buildings. In use, the entirety of the channel is embedded into the concrete, leaving the C-shaped cavity portion hanging bolts for securing the hanging product.
Generally, the testing machine 1 is used for detecting the shearing force of the bolt 22 in the channel 21 on the concrete test block 2, as shown in fig. 1, in the conventional shearing test device, the testing machine 1 applies the shearing load to the upper jaw 13 downwards through the loading force device 19 thereon, the upper jaw 13 transmits the shearing force to the shearing plate 3, namely, the rigid force conduction is adopted between the loading force device 19 and the shearing plate 3, so that when the shearing plate 3 is deformed due to the bending of the bolt 22 in the shearing process, the force line of the upper jaw 13 and the force point of the shearing plate 3 are not in the same straight line, and the upper jaw 13 is damaged. In addition, after the concrete test block 2 is placed on the testing machine 1, in order to ensure that the force line of the upper jaw 13 and the force point of the shear plate 3 are on the same straight line, and further ensure the testing accuracy, the position of the shear plate 3 on the concrete test block 2 and the position of the upper jaw 13 on the testing machine 1 need to be aligned in advance, and the conventional operation is to manually move the heavy concrete test block for many times, which is time-consuming and labor-consuming.
Therefore, how to provide a test device for pre-buried channel shearing work load test, which does not damage the upper jaw and is easy for aligning the position of the shearing plate and the upper jaw on the concrete test block, is a problem to be solved by the skilled person.
Disclosure of utility model
In view of the above, the utility model provides a test device for a pre-buried channel shearing work load test, which does not damage an upper jaw, is easy to align the positions of a shearing plate and the upper jaw on a concrete test block, and is time-saving and labor-saving.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a test device for pre-buried channel shear work load test, comprising:
the lower jaw at the bottom of the testing machine is fixedly provided with a testing table;
The concrete test block is placed on the test bed, one side of the concrete test block is provided with a channel, and a bolt is fixed on the channel;
the shearing plate is sleeved and fixed on the bolt and is locked and fixed through a locking nut;
One end of the flexible force transmission component is connected with an upper jaw at the top of the testing machine, and the other end of the flexible force transmission component is connected with the shearing plate;
And the clamping tool is arranged on the top end surface of the test bed and used for fixing the concrete test block.
Compared with the prior art, the utility model discloses a test device for a pre-buried channel shearing work load test, wherein a loading force device on a test machine transmits a tensile stress load to a shearing plate through the flexible force transmission assembly, and the shearing plate applies tensile stress to bolts on a channel, so that the bolt shearing performance test is realized. The device changes the traditional applied compressive stress load into an upward tensile stress load, and connects the upper jaw and the shear plate through the flexible force transmission component, so that the upper jaw and the shear plate are in flexible force conduction, and the upper jaw cannot be damaged even if the shear plate deforms.
Further, the flexible force transfer assembly includes:
The upper end of the upper sleeve is clamped and fixed on the upper jaw;
The upper end of the connecting screw is in threaded connection with the lower cylinder opening of the upper sleeve;
the upper cylinder opening of the lower sleeve is in threaded connection with the lower end of the connecting screw;
The upper end of the first flexible chain is connected with the lower end of the lower sleeve;
the upper end of the metal rod is connected with the lower end of the first flexible chain;
The upper end of the second flexible chain is connected with the lower end of the metal rod, and the lower end of the second flexible chain is connected with the top end of the shear plate.
The technical scheme has the beneficial effects that the upper sleeves with different sizes can be replaced, so that the flexible force transmission assembly can be matched with the upper jaws with different sizes, the use convenience is improved, the flexible force conduction between the upper jaws and the shearing plate is realized through the flexible chain, and the upper jaws cannot be damaged even if the shearing plate deforms.
Further, the upper end of the first flexible chain is connected with the lower end of the lower sleeve through a first universal joint, the upper end of the metal rod is connected with the lower end of the first flexible chain through a second universal joint, the upper end of the second flexible chain is connected with the lower end of the metal rod through a third universal joint, and the lower end of the second flexible chain is connected with the top end of the shear plate through a fourth universal joint.
The technical scheme has the beneficial effects that the flexibility of connection between the flexible chain and each part is improved, and the problem of poor force transmission effect caused by hard connection is avoided.
Further, the concrete test block is placed at the top end of the alignment plate, and a plurality of roller assemblies in rolling contact with the top end surface of the test bed are installed on the alignment plate.
The technical scheme has the beneficial effects that during the test, the concrete test block is placed on the alignment plate, then the alignment plate is moved through the roller assembly, so that the acting point of the shearing plate on the concrete test block is aligned with the upper jaw position of the testing machine, and then the concrete test block is fixed on the test stand through the clamping tool, and then the subsequent detection process is carried out. Therefore, the device uses mobilizable alignment board, can drive the concrete test block on it and carry out the removal on the position, easily realizes that the impetus of shearing board on the concrete test block aligns with the last jaw position of testing machine, need not the manual work and removes heavy concrete test block, has reduced test personnel's manual labor, has improved test efficiency.
Furthermore, notches are formed in the front side and the rear side of the alignment plate, transverse rods are fixed on each notch, the tops of the roller assemblies are pivotally connected to the transverse rods, the bottoms of the roller assemblies are respectively fixed with the alignment plate through bolts, and a plurality of lifting supporting pieces capable of being abutted to the top end face of the test bed are arranged on the left side and the right side of the alignment plate.
Further, the lateral rod both ends are fixed respectively on the two opposite lateral walls at breach top, through-hole and bolt fixed orifices have been seted up respectively on the two opposite lateral walls at breach bottom, the roller assembly includes:
The support leg is provided with a pivot hole and a bolt hole at the top and the bottom respectively, the transverse rod passes through the pivot hole and is arranged, and one end of the bolt sequentially passes through the through hole and the bolt hole and is then inserted into the bolt fixing hole;
the anti-drag rolling device comprises a supporting leg, a roller, a plurality of anti-drag rolling balls and a plurality of rolling balls, wherein the roller is pressed in a groove at the bottom end of the supporting leg, the plurality of anti-drag rolling balls are embedded on the wall of the groove, and the plurality of anti-drag rolling balls are in rolling contact with the roller.
The technical scheme has the beneficial effects that when the alignment plate moves and is aligned by utilizing the roller assembly, the lifting support piece is not contacted with the top end of the test bed, so that the alignment plate is convenient to move, after the acting point of the shearing plate on the concrete test block is aligned with the upper jaw position of the test machine, the lifting support piece is operated, the bottom end of the lifting support piece is contacted with the top end of the test bed, the alignment plate is integrally lifted by utilizing the lifting support piece along with the concrete test block on the lifting support piece until the roller is not contacted with the top end of the test bed, then the bolt is pulled out, at the moment, the bottom of the supporting leg is movable, the top can swing around the transverse rod, then the lifting support piece is operated, the alignment plate is lowered until the bottom end surface of the alignment plate is contacted with the top end surface of the test bed, at the moment, the bottom of the supporting leg can swing to the outer side of the notch, and the roller does not play a supporting role. Therefore, the alignment plate is in full contact with the test bed, and the influence of shaking or deviation on the experimental effect caused by contact of the alignment plate with the test bed through the roller in the subsequent experimental process is avoided. The anti-drag rolling ball can improve the rolling effect of the roller, and the problem that the alignment plate moves unsmoothly due to the fact that the friction force between the roller and the groove is large and the clamping occurs is avoided.
Further, each of the lifting supports includes:
The mounting plate is fixed with the side wall of the alignment plate at one side;
the lifting screw rod passes through the mounting plate and is in threaded connection with an upper nut and a lower nut, and the upper nut and the lower nut are respectively positioned above and below the mounting plate;
The supporting seat, the supporting seat top with lifting screw rod lower extreme fixed connection, the supporting seat bottom can with test bench top face butt.
The technical scheme has the beneficial effects that when the alignment plate moves and is aligned by utilizing the roller assembly, the supporting seat is not in contact with the top end of the test bed, so that the alignment plate is convenient to move, after the acting point of the shearing plate on the concrete test block is aligned with the upper jaw position of the test bed, the upper nut and the lower nut are unscrewed, the lifting screw rod is enabled to descend with the supporting seat, the supporting seat is enabled to be supported on the top end surface of the test bed, then the lower nut is rotated to enable the lower nut to move upwards, the mounting plate is further lifted, the alignment plate is enabled to move upwards until the roller is not in contact with the top end of the test bed, then the bolt is pulled out, at the moment, the bottom of the supporting leg is movable, the top can swing around the transverse rod, then the lower nut is rotated to enable the alignment plate to move downwards until the bottom end surface of the alignment plate is completely contacted with the top end surface of the test bed, at the moment, the bottom of the supporting leg swings to the outside of the notch, the roller does not play a supporting role, and the alignment plate is completely supported on the test bed.
Furthermore, the leveling instrument is arranged on the peripheral side wall of the alignment plate.
The technical scheme has the beneficial effects that when the alignment plate is lifted and falls back, whether the alignment plate is in the horizontal position can be observed through the level meter, so that the phenomenon that the alignment point of the shearing plate is aligned with the upper jaw position of the testing machine due to the fact that the alignment plate is inclined greatly is avoided.
Further, the clamping tool comprises:
The clamping screws are arranged on two sides of the concrete test block at intervals, the sliding block at the lower end of each clamping screw is arranged in the sliding groove on the top end face of the test bed, and the upper end of each clamping screw is in threaded connection with a compression nut;
The two pressing plates are arranged at intervals, two sides of each pressing plate are respectively arranged on the corresponding clamping screw in a penetrating mode, the bottom end face of each pressing plate is in pressure connection with the top end face of the concrete test block, and the compression nut is arranged on the top end face of each pressing plate in a pressure connection mode;
The bottom spiro union of test bench has supporting screw, supporting screw's lower extreme is fixed with the clamping lever, the lower extreme of clamping lever with the lower jaw of test machine is fixed, be fixed with auxiliary stay board on the supporting screw, auxiliary stay board top with test bench bottom butt.
The concrete test block pressing device has the beneficial effects that the concrete test block can be pressed on the alignment plate through the pressing plate, so that subsequent test operation is facilitated. In addition, the diameter of the supporting screw rod can be of a fixed specification, and the clamping rods can be provided with a plurality of clamping rods of different diameters and sizes, so that the clamping rods of different specifications can be replaced according to the lower jaws of different sizes without replacing the test bed, and the test bed can be matched with the test machine of different specifications under the condition of no replacement.
Further, one side of the test bed far away from the concrete test block is fixedly provided with an extension plate extending out of the tester, the bottom of the extension plate is fixedly provided with a hook, and a balancing weight is hung on the hook.
The technical scheme has the beneficial effects that after the force points of the shearing plates are aligned with the positions of the upper jaw, the heavy concrete test block is positioned on one side of the test bed, namely the weight of the side is increased, and the other side of the test bed is lighter, so that the test bed can be warped and unbalanced, and the experimental effect is influenced. Therefore, the device can ensure the stability of the test bed and the test effect by installing the balancing weight on the lighter other side of the test bed.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a conventional shear test device provided by the utility model.
Fig. 2 is a schematic diagram of a front view structure of a test device for a pre-buried channel shearing work load test.
Fig. 3 is an enlarged schematic view of the structure of the portion a in fig. 2.
Fig. 4 is a schematic side view structure of a test device for a pre-buried channel shearing work load test.
Fig. 5 is a schematic structural diagram of another embodiment of a test device for a pre-buried channel shear working load test according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but 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.
As shown in fig. 2 to 4, the embodiment of the utility model discloses a test device for a pre-buried channel shearing work load test, which comprises:
the testing machine 1, a lower jaw 11 at the bottom of the testing machine 1 is fixedly provided with a testing table 12,
The concrete test block 2, the concrete test block 2 is placed on the test bed 12, one side of the concrete test block 2 is provided with a channel 21, and a bolt 22 is fixed on the channel 21;
The shearing plate 3 is sleeved and fixed on the bolt 22 and locked and fixed through the locking nut 4;
One end of the flexible force transmission component 5 is connected with an upper jaw 13 at the top of the testing machine 1, and the other end of the flexible force transmission component 5 is connected with the shear plate 3;
And the clamping tool 6 is arranged on the top end surface of the test bed 12 and used for fixing the concrete test block 2.
Wherein in some embodiments the flexible force transfer assembly 5 comprises:
an upper sleeve 51, the upper end of the upper sleeve 51 being clamped and fixed on the upper jaw 13;
The upper end of the connecting screw 52 is in threaded connection with the lower cylinder opening of the upper sleeve 51;
the upper cylinder mouth of the lower sleeve 53 is in threaded connection with the lower end of the connecting screw 52;
The first flexible chain 54, the upper end of the first flexible chain 54 is connected with the lower end of the lower sleeve 53;
the upper end of the metal rod 55 is connected with the lower end of the first flexible chain 54;
and the upper end of the second flexible chain 56 is connected with the lower end of the metal rod 55, and the lower end of the second flexible chain 56 is connected with the top end of the shear plate 3.
In a preferred embodiment, the upper end of the first flexible chain 54 is connected with the lower end of the lower sleeve 53 through a first universal joint 57, the upper end of the metal rod 55 is connected with the lower end of the first flexible chain 54 through a second universal joint 58, the upper end of the second flexible chain 56 is connected with the lower end of the metal rod 55 through a third universal joint 59, and the lower end of the second flexible chain 56 is connected with the top end of the shear plate 3 through a fourth universal joint 60.
In other embodiments, the test device further comprises a centering plate 7, the top end of the centering plate 7 is provided with a concrete test block 2, and a plurality of roller assemblies 8 in rolling contact with the top end surface of the test stand 12 are arranged on the centering plate 7.
Specifically, notches 701 are formed on the front side and the rear side of the alignment plate 7, a transverse rod 9 is fixed on each notch 701, the tops of the roller assemblies 8 are pivotally connected to the transverse rod 9, the bottoms of the roller assemblies 8 are respectively fixed with the alignment plate 7 through bolts 10, and a plurality of lifting supporting pieces 14 capable of being abutted to the top end face of the test bed 12 are arranged on the left side and the right side of the alignment plate 7.
Two ends of the transverse rod 9 are respectively fixed on two opposite side walls at the top of the notch 701, through holes 702 and bolt fixing holes 703 are respectively formed on two opposite side walls at the bottom of the notch 701, and the roller assembly 8 comprises:
The support leg 81, the top and bottom of the support leg 81 are respectively provided with a pivot hole 811 and a bolt hole 812, the transverse rod 9 passes through the pivot hole 811, and one end of the bolt 10 passes through the through hole 702 and the bolt hole 812 in sequence and then is spliced with the bolt fixing hole 703;
The roller 82 is pressed in a groove 813 at the bottom end of the supporting leg 81, a plurality of drag reduction rolling balls 83 are embedded on the wall of the groove 813, and the drag reduction rolling balls 83 are in rolling contact with the roller 82.
Preferably, the bolt is a square rod, and the through hole, the bolt hole and the bolt fixing hole are square holes which are matched with the square rod in shape. Like this because of bolt and through-hole, bolt hole and bolt fixed orifices are square structure, insert through-hole, bolt hole and bolt fixed orifices after with square pole, can guarantee that the landing leg bottom can not swing, and then guarantee that the gyro wheel of landing leg bottom can be rolling contact with the test bench top end all the time, guarantee the stability that the alignment board removed.
Each lifting support 14 comprises:
The mounting plate 141, one side of the mounting plate 141 is fixed with the side wall of the alignment plate 7;
The lifting screw rod 142 is arranged through the mounting plate 141, an upper nut 143 and a lower nut 144 are screwed on the lifting screw rod 142, and the upper nut 143 and the lower nut 144 are respectively positioned above and below the mounting plate 141;
The top end of the supporting seat 145 is fixedly connected with the lower end of the lifting screw 142, and the bottom end of the supporting seat 145 can be abutted with the top end surface of the test stand 12.
Of course, instead of using the structural mode of the lifting support 14, the alignment plate can be directly lifted by using a crane.
The leveling instrument 15 is installed on the peripheral side wall of the leveling plate 7.
In the above-described embodiment, the clamping tool 6 includes:
The clamping screws 61 are arranged at intervals on two sides of the concrete test block 2, a sliding block 611 at the lower end of each clamping screw 61 is arranged in a sliding groove 121 on the top end surface of the test bed 12, and a compression nut 62 is screwed at the upper end of each clamping screw 61;
the two pressing plates 63 are arranged at intervals, two sides of each pressing plate 63 are respectively penetrated on the corresponding clamping screw 61, the bottom end face of each pressing plate 63 is in pressure connection with the top end face of the concrete test block 2, and the compression nut 62 is pressed on the top end face of each pressing plate 63;
The bottom spiro union of test bench 12 has supporting screw 16, and the lower extreme of supporting screw 16 is fixed with clamping lever 17, and the lower extreme of clamping lever 17 is fixed with the lower jaw 11 of test machine 1, is fixed with auxiliary stay board 18 on the supporting screw 16, and auxiliary stay board 18 top and test bench 12 bottom butt.
In another embodiment, as shown in fig. 5, an extension plate 23 extending out of the tester 1 is fixed on one side of the test stand 12 away from the concrete test block 2, a hook 24 is fixed on the bottom of the extension plate 23, and a balancing weight 25 is hung on the hook 24.
The using process of the device is as follows:
When the concrete test block is tested, the concrete test block is placed on the alignment plate, when the alignment plate moves by utilizing the roller assembly to align, the supporting seat is not in contact with the top end of the test bed, so that the alignment plate is convenient to move, after the acting point of the shearing plate on the concrete test block is aligned with the upper jaw position of the test machine, the upper nut and the lower nut are unscrewed, the lifting screw rod is enabled to descend with the supporting seat, the supporting seat is enabled to be supported on the top end surface of the test bed, then the lower nut is rotated to enable the lower nut to move upwards, and then the mounting plate is lifted, so that the alignment plate is enabled to move upwards until the roller is not in contact with the top end of the test bed, then the bolt is pulled out, at the moment, the bottom of the supporting leg is movable, the top can swing around the transverse rod, then the lower nut is rotated to enable the alignment plate to move downwards until the bottom end surface of the alignment plate is completely in contact with the top end surface of the test bed, at the moment, the bottom of the supporting leg swings to the outside of the notch, the roller does not play a supporting role, and the alignment plate is completely supported on the test bed. And then connecting a flexible force transmission assembly between the shear plate and the upper jaw, and finally starting a loading force device to apply vertical upward loading force, and performing corresponding shear resistance test according to relevant parameters specified by a standard.
The device changes the compressive stress load applied in the prior art into an upward tensile stress load, and connects the upper jaw and the shear plate through the flexible force transmission component, so that the upper jaw and the shear plate are in flexible force conduction, the upper jaw cannot be damaged even if the shear plate is deformed, and the problem that the upper jaw is damaged due to rigid force conduction between the conventional loading force device and the shear plate is avoided. Moreover, the device uses mobilizable alignment board, can drive the concrete test block on it and carry out the removal on the position, easily realizes that the impetus of shearing board on the concrete test block aligns with the last jaw position of testing machine, need not the manual work and removes heavy concrete test block, has reduced test personnel's manual labor, has improved test efficiency.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A test device for pre-buried channel shear work load test, characterized by, include:
the testing machine (1), a test bed (12) is fixed on a lower jaw (11) at the bottom of the testing machine (1);
The concrete test block (2), the concrete test block (2) is placed on the test bed (12), a channel (21) is arranged on one side of the concrete test block (2), and a bolt (22) is fixed on the channel (21);
The shearing plate (3) is sleeved and fixed on the bolt (22) and locked and fixed through a locking nut (4);
One end of the flexible force transmission assembly (5) is connected with an upper jaw (13) at the top of the testing machine (1), and the other end of the flexible force transmission assembly (5) is connected with the shearing plate (3);
And the clamping tool (6) is arranged on the top end surface of the test bed (12) and used for fixing the concrete test block (2).
2. Test device for pre-buried channel shear work load test according to claim 1, characterized in that said flexible force transmission assembly (5) comprises:
An upper sleeve (51), wherein the upper end of the upper sleeve (51) is clamped and fixed on the upper jaw (13);
The upper end of the connecting screw rod (52) is in threaded connection with the lower cylinder opening of the upper sleeve (51);
the upper cylinder mouth of the lower sleeve (53) is in threaded connection with the lower end of the connecting screw (52);
A first flexible chain (54), the upper end of the first flexible chain (54) being connected with the lower end of the lower sleeve (53);
A metal rod (55), wherein the upper end of the metal rod (55) is connected with the lower end of the first flexible chain (54);
And the upper end of the second flexible chain (56) is connected with the lower end of the metal rod (55), and the lower end of the second flexible chain (56) is connected with the top end of the shear plate (3).
3. The test device for the pre-buried channel shearing work load test according to claim 2, wherein the upper end of the first flexible chain (54) is connected with the lower end of the lower sleeve (53) through a first universal joint (57), the upper end of the metal rod (55) is connected with the lower end of the first flexible chain (54) through a second universal joint (58), the upper end of the second flexible chain (56) is connected with the lower end of the metal rod (55) through a third universal joint (59), and the lower end of the second flexible chain (56) is connected with the top end of the shearing plate (3) through a fourth universal joint (60).
4. A test device for a pre-buried channel shearing work load test according to any one of claims 1-3, further comprising a centering plate (7), wherein the concrete test block (2) is placed on the top end of the centering plate (7), and a plurality of roller assemblies (8) in rolling contact with the top end surface of the test stand (12) are mounted on the centering plate (7).
5. The test device for the embedded channel shearing work load test according to claim 4, wherein notches (701) are formed in the front side and the rear side of the alignment plate (7), transverse rods (9) are fixed on each notch (701), the tops of the roller assemblies (8) are pivotally connected to the transverse rods (9), the bottoms of the roller assemblies (8) are respectively fixed with the alignment plate (7) through bolts (10), and a plurality of lifting supporting pieces (14) capable of being abutted to the top end faces of the test stand (12) are arranged on the left side and the right side of the alignment plate (7).
6. The test device for the pre-buried channel shearing work load test according to claim 5, wherein two ends of the transverse rod (9) are respectively fixed on two opposite side walls at the top of the notch (701), two opposite side walls at the bottom of the notch (701) are respectively provided with a through hole (702) and a bolt fixing hole (703), and the roller assembly (8) comprises:
the support leg (81), the top and the bottom of the support leg (81) are respectively provided with a pivot hole (811) and a bolt hole (812), the transverse rod (9) passes through the pivot hole (811), and one end of the bolt (10) sequentially passes through the through hole (702) and the bolt hole (812) and then is inserted into the bolt fixing hole (703);
the anti-drag rolling device comprises a supporting leg (81), a roller (82), wherein the roller (82) is pressed into a groove (813) at the bottom end of the supporting leg (81), a plurality of anti-drag rolling balls (83) are embedded in the groove wall of the groove (813), and the anti-drag rolling balls (83) are in rolling contact with the roller (82).
7. A test device for pre-buried channel shear work load test according to claim 5, characterized in that each lifting support (14) comprises:
the mounting plate (141), one side of the mounting plate (141) is fixed with the side wall of the alignment plate (7);
the lifting screw rod (142) passes through the mounting plate (141), an upper nut (143) and a lower nut (144) are connected to the lifting screw rod (142) in a screwed mode, and the upper nut (143) and the lower nut (144) are respectively located above and below the mounting plate (141);
The supporting seat (145), supporting seat (145) top with lifting screw rod (142) lower extreme fixed connection, supporting seat (145) bottom can with test bench (12) top terminal surface butt.
8. A test device for pre-buried channel shear work load test according to any of claims 5-7, characterized in that level gauges (15) are mounted on the peripheral side walls of the alignment plate (7).
9. A test device for pre-buried channel shear work load test according to any of claims 1-3, 5-7, characterized in that the clamping fixture (6) comprises:
The clamping screws (61) are arranged on two sides of the concrete test block (2) at intervals, a sliding block (611) at the lower end of each clamping screw (61) is arranged in a sliding groove (121) on the top end surface of the test bed (12), and a compression nut (62) is screwed at the upper end of each clamping screw (61);
The two pressing plates (63) are arranged at intervals, two sides of each pressing plate (63) are respectively arranged on the corresponding clamping screw rods (61) in a penetrating mode, the bottom end face of each pressing plate (63) is in pressure connection with the top end face of the concrete test block (2), and the compression nuts (62) are arranged on the top end face of each pressing plate (63) in a pressure connection mode;
The bottom spiro union of test bench (12) has backing screw (16), the lower extreme of backing screw (16) is fixed with clamping lever (17), the lower extreme of clamping lever (17) with lower jaw (11) of test machine (1) are fixed, be fixed with auxiliary stay board (18) on backing screw (16), auxiliary stay board (18) top with test bench (12) bottom butt.
10. A test device for pre-buried channel shearing work load test according to any one of claims 1-3, 5-7, characterized in that, an extension plate (23) extending out of the tester (1) is fixed on one side of the test stand (12) away from the concrete test block (2), a hook (24) is fixed on the bottom of the extension plate (23), and a balancing weight (25) is hung on the hook (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420765997.9U CN222280357U (en) | 2024-04-12 | 2024-04-12 | Test device for pre-buried channel shearing work load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420765997.9U CN222280357U (en) | 2024-04-12 | 2024-04-12 | Test device for pre-buried channel shearing work load test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222280357U true CN222280357U (en) | 2024-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420765997.9U Active CN222280357U (en) | 2024-04-12 | 2024-04-12 | Test device for pre-buried channel shearing work load test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222280357U (en) |
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2024
- 2024-04-12 CN CN202420765997.9U patent/CN222280357U/en active Active
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