CN115436127A - Test piece forming device for extrusion type flexible concrete elasticity modulus test - Google Patents
Test piece forming device for extrusion type flexible concrete elasticity modulus test Download PDFInfo
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- CN115436127A CN115436127A CN202211069181.4A CN202211069181A CN115436127A CN 115436127 A CN115436127 A CN 115436127A CN 202211069181 A CN202211069181 A CN 202211069181A CN 115436127 A CN115436127 A CN 115436127A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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Abstract
The invention discloses a test piece forming device for an extrusion type flexible concrete elastic modulus test, which comprises an operation table board, a first clamping block, a second clamping block, a moving groove, an adjusting component, a pressing block, a fixed plate, a connecting rod and a driving component.
Description
Technical Field
The invention relates to the technical field of flexible concrete correlation, in particular to a test piece forming device for an extrusion type flexible concrete elasticity modulus test.
Background
In recent years, fiber polypropylene, steel or glass fiber is doped into concrete by a new method to improve the performance of the concrete, and compared with the conventional concrete, the flexibility and the strength of the experimental concrete are increased, so the experimental concrete is called flexible concrete, and in the flexible concrete test, reinforcing fiber needs to be doped into the concrete for rapid and uniform stirring to ensure the performance of the flexible concrete;
at present, the test piece forming device for the extrusion type flexible concrete elastic modulus test is disclosed as CN201613588U in the prior art, and comprises a test mold, wherein a sleeve mold is sleeved at the top end of the test mold, the inner section size of the sleeve mold is consistent with that of the test mold, a pressing plate is placed in the test mold or the sleeve mold, the size of the lower surface of the pressing plate is consistent with that of the inner section of the sleeve mold, and a transmission column is placed above the pressing plate. The test piece forming device for the extrusion type flexible concrete elasticity modulus test saves test piece forming time, guarantees test piece forming quality, effectively simulates the stress state when a test piece is formed to enable the test piece to be basically consistent with the site construction state, can complete the whole forming process indoors, and is convenient to use.
However, the above-mentioned conventional test piece forming device for the flexible concrete elastic modulus test has the following problems in the actual use process due to its design characteristics:
(1) The test piece forming device for the flexible concrete elastic modulus test in the prior art is inconvenient for clamping and fixing flexible concrete test pieces with different sizes, so that the position of the flexible concrete test piece is easy to deviate in the extrusion process, and the accuracy of the elastic modulus measurement of the test piece is reduced;
(2) Test piece forming device for flexible concrete elastic modulus among the prior art is measuring flexible concrete elastic modulus, is not convenient for lead the direction of motion of the clamp plate of exerting pressure to reduced the area of contact of clamp plate to flexible concrete, and had the inconvenient characteristics of operation.
Disclosure of Invention
An object of the invention is to provide a test piece forming device for extrusion type flexible concrete elastic modulus test, aim at improving the experimental test piece forming device for flexible concrete elastic modulus among the prior art and be not convenient for carry out the centre gripping to the flexible concrete test piece of equidimension not fixed, thereby easily cause the skew that the flexible concrete test piece took place the position in extrusion process, thereby reduced carry out elastic modulus measuring accuracy and the experimental test piece forming device for flexible concrete elastic modulus among the prior art to the test piece when measuring flexible concrete elastic modulus, be not convenient for lead to the direction of motion of the clamp plate of exerting pressure, thereby reduced the problem of clamp plate to the area of contact of flexible concrete.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an experimental test piece forming device that uses of extrusion formula flexible concrete elastic modulus, is in including operation mesa, setting first grip block, the setting of operation mesa up end are in the second grip block, the setting of operation mesa up end are in be used for on the operation mesa right first grip block and second grip block carry out the shifting chute that leads, be used for carrying out the adjusting part who adjusts, set up to first grip block and second grip block the briquetting, the setting of first grip block and second grip block up end are in the fixed plate of briquetting up end, setting are in connecting rod between fixed plate and the clamp plate and be used for carrying out driven drive assembly to the fixed plate.
As a preferable aspect of the invention, the first clamping block and the second clamping block are respectively configured to be circular arc-shaped, and the first clamping block and the second clamping block are configured to be mirror images with respect to each other.
As a preferable aspect of the invention, the adjusting assembly includes a first moving seat connected to the first clamping block, a second moving seat connected to the second clamping block, a bidirectional screw rod connected to the first moving seat and the second moving seat through a screw structure, and a pair of bidirectional screw rods.
In a preferred aspect of the present invention, the protective cover is configured to have an upward opening, and an upper end surface of the protective cover is fixedly connected to a lower end surface of the operation table.
In a preferred aspect of the present invention, ball bearings are disposed at a connection portion between two ends of the bidirectional screw rod and the protective cover, the bidirectional screw rod is connected to an output shaft of the driving motor, and the driving motor is a bidirectional servo motor.
In a preferred aspect of the present invention, the first clamping block and the second clamping block are respectively provided with a mounting plate at one end of the first movable base and one end of the second movable base, the mounting plates are respectively fixedly connected with the first clamping block and the second clamping block, and the mounting plates are connected with the first movable base and the second movable base through fixing screws.
As a preferable aspect of the present invention, sliding blocks are respectively and fixedly disposed at middle positions of two sides of the first moving seat and the second moving seat, sliding grooves adapted to the sliding blocks are respectively disposed at two sides of an inner cavity of the protective cover, and the sliding grooves are disposed in a length direction of the protective cover.
As a preferred aspect of the present invention, the connecting rods are respectively disposed on two sides of the fixing plate and the pressing plate, the connecting rod is fixedly disposed with a first connecting post relative to one end of the fixing plate, the fixing plate is provided with a connecting hole adapted to the first connecting post, the connecting rod is fixedly disposed with a second connecting post and disposed with a fixing hole adapted to the second connecting post on the pressing plate relative to one end of the pressing plate, the periphery of the first connecting post is provided with an external thread a, the inner wall of the connecting hole is a smooth arc surface, and the first connecting post penetrates through the connecting hole and is connected with the fixing nut.
As a preferable aspect of the present invention, an outer circumference of the second connecting column is provided with an external thread b, and an inner wall of the fixing hole is provided with an internal thread adapted to the external thread b.
As a preferable aspect of the present invention, the driving assembly includes a U-shaped frame fixedly connected to the operating table, a hydraulic cylinder disposed at a middle position of a closed end of the frame, a telescopic shaft connected to a telescopic shaft of the hydraulic cylinder, and a fixing plate disposed at an end of the telescopic shaft far away from the end connected to the telescopic shaft, wherein the telescopic shaft is connected to the telescopic shaft through a connecting shaft sleeve.
As a preferable aspect of the present invention, the hydraulic cylinder is connected to the frame through a connection flange, so as to be fixed to the hydraulic cylinder, the fixed disk is fixedly connected to the telescopic shaft, and the fixed disk is also connected to a middle position of an upper end surface of the fixed plate through a fixing screw.
As a preferable aspect of the present invention, guide rods are respectively disposed on two sides of the fixing plate, guide holes adapted to the guide rods are disposed on the fixing plate, the guide holes are configured to be through, one end of each guide rod is fixedly connected to the inner side of the closed end of the frame, and the other end of each guide rod is fixedly connected to the upper end face of the operation table.
As a preferable aspect of the present invention, the device further includes a buffer plate fixedly disposed on the lower end surface of the pressing plate, a pressure sensor disposed in the buffer plate, and a controller electrically connected to a signal output terminal of the pressure sensor, wherein the controller is fixedly disposed on one side of the operation table.
Compared with the prior art, the invention has the beneficial effects that: the extrusion type flexible concrete elastic modulus test piece forming device has the characteristics of reasonable design and simplicity in operation
(1) The adjusting assembly is convenient for adjusting the relative distance between the first clamping block and the second clamping block, so that concrete samples with different sizes can be clamped and fixed conveniently, and the position deviation of the concrete samples in the extrusion process is effectively avoided;
(2) The driving assembly is convenient for adjust the fixed plate for the distance between the clamp plate to be convenient for the fixed plate to drive the clamp plate and move toward the direction for the concrete test piece, thereby be convenient for the clamp plate to exert pressure to the concrete test piece, and carry out real-time demonstration through the pressure that the controller received the concrete test piece in to the pressure sensor in the clamp plate, be convenient for carry out real-time acquisition to the pressure that the concrete test piece received.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some examples of the embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for a person skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic structural diagram of the overall structure of a test piece forming device for the elastic modulus test of the extrusion type flexible concrete of the invention;
FIG. 2 is a schematic structural diagram of the front view of FIG. 1 in a test piece molding device for the elastic modulus test of the extruded flexible concrete of the invention;
FIG. 3 is a schematic structural diagram of a fixing plate and a pressing plate in a test piece forming device for the elastic modulus test of the extrusion-type flexible concrete of the invention;
FIG. 4 is a schematic structural diagram of a connecting rod in a test piece forming device for an extrusion type flexible concrete elasticity modulus test according to the invention;
FIG. 5 is a schematic structural diagram of a clamping assembly in a test piece forming device for an elastic modulus test of extruded flexible concrete according to the invention;
fig. 6 is a schematic structural view of an enlarged view of a portion a in fig. 5 in a test piece molding device for an extrusion type flexible concrete elastic modulus test according to the present invention.
In the figure: 1-operation table top, 10-moving groove, 21-first clamping block, 22-second clamping block, 23-mounting plate, 31-first moving seat, 32-second moving seat, 33-sliding block, 34-bidirectional screw rod, 341-driving motor, 3411-fixing frame, 342-protective cover, 3421-sliding groove, 4-controller, 5-frame, 61-hydraulic cylinder, 62-telescopic rod, 621-fixing plate, 63-fixing plate, 631-guide hole, 632-connecting hole, 64-pressing plate, 641-buffer plate, 642-fixing hole, 65-guide rod, 66-connecting rod, 661-first connecting column, 6611-fixing nut and 662-second connecting column.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, which are included in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the invention, are within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, provided in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the invention, are within the scope of the invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the present invention provides a technical solution: the utility model provides an experimental test piece forming device that uses of extrusion formula flexible concrete elastic modulus, including operation mesa 1, the first grip block 21 of setting at 1 up end of operation mesa, the second grip block 22 of setting at 1 up end of operation mesa, first grip block 21 and second grip block 22 set up to arc respectively, and the relative mirror image setting of first grip block 21 and second grip block 22, owing to set up first grip block 21 and second grip block 22 to arc, the effectual area that first grip block 21 and second grip block 22 contacted with the concrete test piece of having guaranteed, thereby effectual first grip block 21 and the second grip block 22 of having guaranteed carry out the fixed stability of centre gripping to the concrete test piece.
Referring to fig. 5 and 6, the moving groove 10 is disposed on the operation table 1 for guiding the first clamping block 21 and the second clamping block 22, and the adjusting assembly is configured for adjusting the first clamping block 21 and the second clamping block 22, the adjusting assembly includes a first moving seat 31 connected to the first clamping block 21, a second moving seat 32 connected to the second clamping block 22, a bidirectional screw 34 connected to the first moving seat 31 and the second moving seat 32 through a threaded structure, a driving motor 341 for driving the bidirectional screw 34, and a shield 342 disposed on the periphery of the bidirectional screw 34, the shield 342 is configured to have an upward opening, an upper end surface of the shield 342 is fixedly connected to a lower end surface of the operation table 1, so that stability of the shield 342 connected to the operation table 1 is effectively ensured, ball bearings are disposed at positions where two ends of the bidirectional screw 34 are connected to the 342, the driving motor 341 is connected to an output shaft of the driving motor 341, the driving motor 341 is configured to drive the output shaft of the bidirectional screw 341 to rotate, so that the output shaft of the bidirectional screw 34 rotates, so that the first moving seat 34 and the second clamping block 22 move oppositely to clamp the second clamping block 21 and the second clamping block 22, or clamp the concrete block 22, so that the first clamping block 21 and the second clamping block 22 move oppositely.
Referring to fig. 5 and 6, in order to ensure the connection stability between the first clamping block 21 and the first moving seat 31 and between the second clamping block 22 and the second moving seat 32, the first clamping block 21 and the second clamping block 22 are respectively provided with a mounting plate 23 at one end thereof opposite to the first moving seat 31 and the second moving seat 32, the mounting plate 23 is respectively fixedly connected to the first clamping block 21 and the second clamping block 22, and the mounting plate 23 is connected to the first moving seat 31 and the second moving seat 32 through fixing screws, which are convenient for connecting the mounting plate 23 to the first moving seat 31 and the second moving seat 32, so as to connect the first clamping block 21 to the first moving seat 31 and connect the second clamping block 22 to the second moving seat 32, thereby effectively ensuring the connection stability between the first clamping block 21 and the first moving seat 31 and between the second clamping block 22 and the second moving seat 32.
Specifically referring to fig. 5 and 6, in order to guide the first movable seat 31 and the second movable seat 32 during the moving process, the middle positions of the two sides of the first movable seat 31 and the second movable seat 32 are respectively and fixedly provided with a sliding block 33, the two sides of the inner cavity of the protective cover 342 are respectively provided with a sliding groove 3421 matched with the sliding block 33, and the sliding groove 3421 is arranged in the length direction of the protective cover 342, so that the moving directions of the first movable seat 31 and the second movable seat 32 are guided by the mutual complementary action between the sliding block 33 and the sliding groove 3421.
When the concrete test piece clamping device is used, when the output shaft of the driving motor 341 rotates in the forward direction, the bidirectional screw rod 34 rotates clockwise, the first moving seat 31 and the second moving seat 32 move relatively, so that the distance between the first moving seat 31 and the second moving seat 32 is reduced, the clamping and fixing of a small concrete test piece are facilitated, when the output shaft of the driving motor 341 rotates in the reverse direction, the bidirectional screw rod 34 rotates anticlockwise, the first moving seat 31 and the second moving seat 32 move oppositely, so that the distance between the first moving seat 31 and the second moving seat 32 is increased, the clamping and fixing of a large concrete test piece are facilitated, and meanwhile, the sliding blocks 33 on the two sides of the first moving seat 31 and the second moving seat 32 and the sliding grooves 3421 in the inner cavity of the protective cover 342 act complementarily, and the moving directions of the first moving seat 31 and the second moving seat 32 are guided.
Example 2
Referring to fig. 3 and 4, in particular, the clamping block is disposed on the upper end surfaces of the first clamping block 21 and the second clamping block 22, the fixing plate 63 is disposed on the upper end surface of the clamping block, the connecting rod 66 is disposed between the fixing plate 63 and the clamping plate 64, the connecting rod 66 is disposed on two sides of the fixing plate 63 and the clamping plate 64, the connecting rod 66 is fixedly disposed on one end of the fixing plate 63 and is provided with a first connecting post 661 corresponding to the fixing plate 63, the fixing plate 63 is provided with a connecting hole 632 corresponding to the first connecting post 661, the connecting rod 66 is fixedly disposed on one end of the clamping plate 64 and is provided with a second connecting post 662 and a fixing hole 642 corresponding to the second connecting post 662, the outer periphery of the first connecting post 661 is provided with an external thread a, the inner wall of the connecting hole 632 is provided with a smooth arc surface, the first connecting post 661 penetrates through the connecting hole 632 and is connected with the fixing nut 6611, the external thread a function of the external thread a mutual matching with the fixing nut 6611 is convenient for connecting the first connecting post 661 with the fixing plate 63, the outer periphery of the second connecting post 662 is provided with an external thread b, the inner wall of the fixing hole 642 is provided with an internal thread matching with the external thread b, the internal thread of the second connecting post and the second connecting post 64.
When the fixing device is used, firstly, the external threads b on the periphery of the second connecting column 662 and the internal threads of the inner cavity of the fixing hole 642 on the pressing plate 64 are mutually complemented, the second connecting column 662 is connected with the pressing plate 64, then the first connecting column 661 penetrates through the connecting hole 632 on the fixing plate 63 to be connected with the fixing nut 6611, and the first connecting column 661 and the fixing plate 63 are conveniently connected through the mutual matching effect between the external threads a and the fixing nut 6611.
The device provided by the embodiment of the present invention has the same implementation principle and technical effects as those of embodiment 1, and for the sake of brief description, reference may be made to the corresponding contents in embodiment 1 where this embodiment is not mentioned.
Example 3
Referring to fig. 1 and 2 specifically, and a driving assembly for driving the fixing plate 63, the driving assembly includes a U-shaped frame 5 fixedly connected to the operation table 1, a hydraulic cylinder 61 disposed at a middle position of a closed end of the frame 5, an expansion rod 62 connected to an expansion shaft of the hydraulic cylinder 61, and a fixing plate 621 disposed at a position of the expansion rod 62 far away from a end connected to the expansion shaft, the expansion shaft is connected to the expansion rod 62 through a connecting shaft sleeve, so as to connect the expansion shaft to the expansion rod 62, so as to facilitate the expansion shaft to drive the expansion rod 62 to reciprocate up and down, the hydraulic cylinder 61 is connected to the frame 5 through a connecting flange, so as to facilitate fixing the hydraulic cylinder 61, the fixing plate 621 is fixedly connected to the expansion shaft, the fixing plate 621 is also connected to a middle position of an upper end surface of the fixing plate 63 through a fixing screw, and the fixing screw facilitates connecting the fixing plate 621 to the fixing plate 63, so as to connect the expansion rod 62 to the fixing plate 63.
Referring to fig. 2 specifically, in order to guide the moving direction of the fixing plate 63, two sides of the fixing plate 63 are respectively provided with a guide rod 65, the fixing plate 63 is provided with a guide hole 631 matched with the guide rod 65, the guide hole 631 is made to be through, one end of the guide rod 65 is fixedly connected with the inner side of the closed end of the rack 5, the other end of the guide rod 65 is fixedly connected with the upper end face of the operation table top 1, stability of the guide rod 65 being connected with the rack 5 and the operation table top 1 respectively is effectively ensured, and further, the moving direction of the fixing plate 63 is guided through mutual complementary action between the guide rod 65 and the guide hole 631, so that position deviation of the fixing plate 63 is avoided, and accordingly, the moving stability of the pressing plate 64 is effectively ensured.
Referring to fig. 2, the concrete testing apparatus further includes a buffer plate 641 fixedly disposed on the lower end surface of the pressing plate 64, a pressure sensor disposed in the buffer plate 641, and a controller 4 electrically connected to a signal output end of the pressure sensor, wherein the controller 4 is fixedly disposed on one side of the operation table 1, and the controller 4 displays the pressure applied to the concrete test piece in the pressure sensor disposed in the pressing plate 64 in real time, so as to facilitate real-time acquisition of the pressure applied to the concrete test piece.
The device provided by the embodiment of the present invention has the same implementation principle and technical effects as those of embodiment 1 or embodiment 2, and for the sake of brief description, the corresponding contents in embodiment 1 or embodiment 2 may be referred to where this embodiment is not mentioned.
The working principle is as follows: in use, when the output shaft of the driving motor 341 rotates in the forward direction, the bidirectional screw rod 34 rotates clockwise, the first movable seat 31 and the second movable seat 32 move relatively, thereby reducing the distance between the first movable seat 31 and the second movable seat 32, facilitating the clamping and fixing of a smaller concrete sample, when the output shaft of the driving motor 341 rotates in the reverse direction, the bidirectional screw 34 rotates counterclockwise, the first movable seat 31 and the second movable seat 32 move away from each other, thereby increasing the distance between the first movable seat 31 and the second movable seat 32, facilitating the clamping and fixing of a larger concrete sample, at the same time, the sliding blocks 33 on both sides of the first movable seat 31 and the second movable seat 32 and the sliding grooves 3421 in the inner cavity of the shield 342 mutually complement each other, the moving directions of the first moving seat 31 and the second moving seat 32 are guided, and when the extension and contraction shaft of the hydraulic cylinder 61 is extended, the telescopic rod 62 moves towards the direction opposite to the fixing plate 63, the fixing plate 63 moves towards the direction opposite to the pressing plate 64, the pressing plate 64 moves towards the direction opposite to the concrete sample, so that the concrete sample can be conveniently pressed, when the telescopic shaft of the hydraulic cylinder 61 retracts, the telescopic rod 62 moves away from the fixed plate 63, the fixed plate 63 moves away from the pressure plate 64, the pressure plate 64 moves away from the concrete sample to facilitate pressure relief of the concrete sample, the guide rod 65 and the guide hole 631 perform complementary action, the moving direction of the fixing plate 63 is guided, and the controller 4 displays the pressure on the concrete test piece in the pressure sensor in the pressure plate 64 in real time, so that the pressure on the concrete test piece can be acquired in real time.
The device that obtains through above-mentioned design has basically satisfied and has improved the experimental test piece forming device of using of flexible concrete elastic modulus among the prior art and be not convenient for carry out the centre gripping to the flexible concrete test piece of equidimension not fixed, thereby easily cause the skew that the flexible concrete test piece takes place the position in extrusion process, thereby reduced carry out elastic modulus measuring accuracy and the experimental test piece forming device of using of flexible concrete elastic modulus among the prior art when measuring flexible concrete elastic modulus to the test piece, be not convenient for lead to the direction of motion of the clamp plate of exerting pressure, thereby reduced the use of clamp plate to the area of contact's of flexible concrete problem, but originally further perfect the purpose of its function, the designer has carried out further improvement to the device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides an experimental test piece forming device that uses of extrusion formula flexible concrete elastic modulus which characterized in that: including operation mesa (1), setting be in first grip block (21), the setting of operation mesa (1) up end are in second grip block (22), the setting of operation mesa (1) up end are in be used for on operation mesa (1) right first grip block (21) and second grip block (22) carry out shifting chute (10) of leading, be used for carrying out the adjusting part who adjusts first grip block (21) and second grip block (22), set up and be in the briquetting of first grip block (21) and second grip block (22) up end, setting are in fixed plate (63), the setting of briquetting up end are in connecting rod (66) between fixed plate (63) and clamp plate (64) and be used for carrying out driven drive assembly to fixed plate (63).
2. The extrusion type test piece molding device for the flexible concrete elasticity modulus test as claimed in claim 1, wherein the first clamping block (21) and the second clamping block (22) are respectively arranged in a circular arc shape, and the first clamping block (21) and the second clamping block (22) are arranged in a mirror image manner.
3. The test piece forming device for the extrusion type flexible concrete elasticity modulus test according to claim 2, wherein the adjusting assembly comprises a first moving seat (31) connected with the first clamping block (21), a second moving seat (32) connected with the second clamping block (22), a bidirectional screw rod (34) connected with the first moving seat (31) and the second moving seat (32) through a threaded structure, a driving motor (341) for driving the bidirectional screw rod (34), and a protective cover (342) arranged on the periphery of the bidirectional screw rod (34), the protective cover (342) is arranged in a structure with an upward opening, and the upper end face of the protective cover (342) is fixedly connected with the lower end face of the operation table top (1).
4. The extrusion type test piece molding device for the flexible concrete elasticity modulus test as claimed in claim 3, wherein ball bearings are arranged at the connection positions of the two ends of the bidirectional screw rod (34) and the protective cover (342), the bidirectional screw rod (34) is connected with an output shaft of the driving motor (341), and the driving motor (341) is a bidirectional servo motor.
5. The test piece forming device for the extrusion type flexible concrete elasticity modulus test is characterized in that the first clamping block (21) and the second clamping block (22) are respectively provided with a mounting plate (23) relative to one end of a first movable seat (31) and one end of a second movable seat (32), the mounting plates (23) are respectively fixedly connected with the first clamping block (21) and the second clamping block (22), and the mounting plates (23) are connected with the first movable seat (31) and the second movable seat (32) through fixing screws.
6. The test piece forming device for the extrusion type flexible concrete elasticity modulus test according to claim 5, wherein sliding blocks (33) are fixedly arranged at the middle positions of two sides of the first movable seat (31) and the second movable seat (32) respectively, sliding grooves (3421) matched with the sliding blocks (33) are arranged at two sides of an inner cavity of the protective cover (342) respectively, and the sliding grooves (3421) are arranged in the length direction of the protective cover (342).
7. The test piece forming device for the extrusion type flexible concrete elasticity modulus test of claim 6, wherein the connecting rods (66) are respectively arranged on two sides of the fixing plate (63) and the pressing plate (64), a first connecting column (661) is fixedly arranged on one end of each connecting rod (66) relative to the fixing plate (63), a connecting hole (632) matched with the first connecting column (661) is formed in the fixing plate (63), a second connecting column (662) is fixedly arranged on one end of each connecting rod (66) relative to the pressing plate (64), and a fixing hole (642) matched with the second connecting column (662) is formed in the pressing plate (64).
8. The test piece forming device for the extrusion type flexible concrete elasticity modulus test of claim 7, wherein the outer periphery of the first connecting column (661) is provided with an external thread a, the inner wall of the connecting hole (632) is set to be a smooth arc surface, the first connecting column (661) penetrates through the connecting hole (632) to be connected with a fixing nut (6611), the outer periphery of the second connecting column (662) is provided with an external thread b, and the inner wall of the fixing hole (642) is provided with an internal thread matched with the external thread b.
9. The test piece forming device for the extrusion type flexible concrete elasticity modulus test of claim 8, wherein the driving assembly comprises a U-shaped frame (5) fixedly connected with the operation table top (1), a hydraulic cylinder (61) arranged at the middle position of the closed end of the frame (5), a telescopic rod (62) connected with a telescopic shaft of the hydraulic cylinder (61), and a fixing disc (621) arranged at one end of the telescopic shaft, far away from the telescopic rod (62), connected with the telescopic rod (62) through a connecting shaft sleeve, wherein the hydraulic cylinder (61) is connected with the frame (5) through a connecting flange disc, the fixing disc (621) is fixedly connected with the telescopic shaft, and the fixing disc (621) is also connected with the middle position of the upper end face of the fixing plate (63) through a fixing screw.
10. The extrusion type test piece forming device for the flexible concrete elasticity modulus test as claimed in claim 9, wherein guide rods (65) are respectively arranged on two sides of the fixing plate (63), a guide hole (631) matched with the guide rods (65) is formed in the fixing plate (63), the guide hole (631) is arranged to be through, one end of each guide rod (65) is fixedly connected with the inner side of the closed end of the frame (5), and the other end of each guide rod (65) is fixedly connected with the upper end face of the operation table top (1).
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| CN202211069181.4A CN115436127A (en) | 2022-09-02 | 2022-09-02 | Test piece forming device for extrusion type flexible concrete elasticity modulus test |
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| CN202211069181.4A CN115436127A (en) | 2022-09-02 | 2022-09-02 | Test piece forming device for extrusion type flexible concrete elasticity modulus test |
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- 2022-09-02 CN CN202211069181.4A patent/CN115436127A/en active Pending
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| CN108776063A (en) * | 2018-08-21 | 2018-11-09 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of valve rigidity compression tester |
| CN210923004U (en) * | 2019-12-20 | 2020-07-03 | 苏州海利安精密电子元器件有限公司 | Stable fixed parcel bubble is elasticity testing arrangement for cotton production |
| CN215339310U (en) * | 2021-07-30 | 2021-12-28 | 重庆交院和瑞工程检测技术有限公司 | Full-automatic anti compression testing machine that rolls over |
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