CN212008159U - Bending resistance test device of concrete beam - Google Patents
Bending resistance test device of concrete beam Download PDFInfo
- Publication number
- CN212008159U CN212008159U CN202020070408.7U CN202020070408U CN212008159U CN 212008159 U CN212008159 U CN 212008159U CN 202020070408 U CN202020070408 U CN 202020070408U CN 212008159 U CN212008159 U CN 212008159U
- Authority
- CN
- China
- Prior art keywords
- fixing body
- support
- lower support
- concrete beam
- positioning shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a concrete beam's bending test device relates to engineering check out test set field, has solved two fulcrums on the lower carriage of the three-point anchor clamps among the prior art often not for the upper bracket symmetry, and the manual work is adjusted more difficultly, has increased operating personnel's intensity of labour intangibly, has also reduced the technical problem of the authenticity of test data. The technical characteristics are that the device comprises an upper support which is fixedly arranged on an upper chuck of a press machine; the lower support is fixedly arranged on a base of the press machine, and a concrete beam to be tested is placed between the lower support and the upper support; the bottom of the lower support is provided with a positioning shaft, and the center line of the positioning shaft is superposed with the center line of the upper chuck of the press; the lower support is also provided with an adjusting mechanism which enables the two fulcrums on the lower support to move simultaneously. The test bench has the beneficial effects that the moving distances of the two lower supporting points are ensured to be consistent, the two supporting points are also ensured to be symmetrical with the positioning shaft, and the test precision is ensured.
Description
Technical Field
The utility model relates to an engineering check out test set technical field, in particular to concrete beam's bending test device.
Background
In a concrete beam bending test, the bending deflection of a test piece is an important basis for evaluating the rigidity and the bending toughness of a material, and the measurement accuracy directly influences the reliability of a calculation result. The bending test of the concrete beam is generally completed by a three-point bending fixture.
In the prior art, three complete anchor clamps include: upper bracket and undersetting include two fulcrums on, two fulcrums are symmetrical for the upper bracket, however, two fulcrums on the undersetting need artifical adjustment to the distance that needs before work and need be symmetrical for the upper bracket, and this process needs artifical adjustment, then imitates right with the ruler, and whole manual regulation is more difficult, wastes time and energy, has increased operating personnel's intensity of labour intangibly, has also reduced the authenticity of test data.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve two fulcrums on the lower carriage of the anchor clamps of having accomplished three points among the prior art and often not for the upper bracket symmetry, the manual work is adjusted more difficultly, has increased operating personnel's intensity of labour intangibly, has also reduced the technical problem of the authenticity of test data, provides a concrete beam's bending resistance test device.
In order to solve the technical problem, the technical scheme of the utility model is specifically as follows:
a bending test device of a concrete beam comprises:
the upper support is fixedly arranged on an upper chuck of the press machine;
the lower support is fixedly arranged on a base of the press machine, and a concrete beam to be tested is placed between the lower support and the upper support;
the bottom of the lower support is provided with a positioning shaft, and the center line of the positioning shaft is superposed with the center line of the upper chuck of the press;
the lower support is also provided with an adjusting mechanism which enables the two fulcrums on the lower support to move simultaneously.
Further, the upper bracket includes:
the clamping body is used for being fixed with an upper chuck of a press machine, and the other end of the upper fixing body is a compression roller groove;
the upper compression roller is matched with the compression roller groove and is used for pressing the concrete beam;
the lower support includes:
the bottom of the lower fixing body is provided with a positioning shaft, when the lower fixing body is installed and used, the central line of the positioning shaft is superposed with the central line of an upper chuck of a press machine, the lower fixing body is provided with two through T-shaped grooves, and T-shaped nuts are arranged in the T-shaped grooves;
the lower supporting points are two in number, and the lower supporting points and the lower fixing body are fixedly installed through the matching of screws and T-shaped nuts;
and the adjusting mechanism is arranged above the lower fixing body and is in threaded connection with the lower fulcrum.
Further, the lower fulcrum includes:
the number of the sliding seats is two, the sliding seats are arranged above the lower fixing body and are perpendicular to the length direction of the T-shaped groove, a through hole is formed in one side of each sliding seat, a screw penetrates through the through hole to be connected with the T-shaped nut and fixedly connect the sliding seats with the lower fixing body, a through threaded hole is further formed in each sliding seat, the direction of the threaded hole is parallel to the length direction of the T-shaped groove, a lower compression roller groove is formed in the other side of each sliding seat, and the length direction of the lower compression roller groove is perpendicular to the length direction of the T-shaped groove;
the lower compression roller is matched with the lower compression roller groove and is used for supporting the concrete beam;
wherein, the screw thread on one slide is the screw thread of positive screw thread on another slide is the screw thread of reversal, adjustment mechanism and the screw hole threaded connection on the slide.
Further, the adjustment mechanism includes:
the bearing seat is fixedly arranged at one end of the lower fixing body;
and one end of the adjusting screw is matched and connected with the bearing seat and penetrates through the bearing seat, the front part of the other end of the adjusting screw is provided with a positive thread, the rear part of the other end of the adjusting screw is provided with a negative thread, and the positive thread and the negative thread on the adjusting screw are respectively matched with the positive thread and the negative thread on the two sliding seats.
And the hand wheel is fixedly connected with one end of the adjusting screw rod.
Furthermore, size lines for observing the movement distance of the lower fulcrum are arranged on two sides of the lower fixing body.
The utility model discloses following beneficial effect has:
the utility model discloses a concrete beam's bending test device adjusts structure and location axle through setting up, can make two lower fulcrums use the location axle to keep away from simultaneously or be close to as the center, guarantees that the displacement of two lower fulcrums is unanimous, has just also guaranteed two fulcrums and has guaranteed test precision with location axisymmetric, has guaranteed whether two fulcrums symmetry according to can rely on, through setting up the size line, can also observe the distance between two fulcrums at any time, makes things convenient for operating personnel to operate.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of a three-point bending fixture in the prior art;
fig. 2 is a schematic structural view of a bending test device for a concrete beam according to the present invention;
fig. 3 is a side view of the bending resistance testing apparatus of the concrete beam of the present invention.
The reference numerals in the figures denote:
1. an upper support; 101. an upper fixing body; 102. an upper compression roller; 2. a concrete beam; 3. a lower support; 301. a lower fixed body; 302. positioning the shaft; 303. a dimension line; 304. a slide base; 305. a lower pressing roller; 306. a T-shaped groove; 307. a T-shaped nut; 4. an adjustment mechanism; 401. a hand wheel; 402. a bearing seat; 403. adjusting the screw rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, a bending test apparatus for a concrete beam includes:
the upper support 1 is fixedly arranged on an upper chuck of the press machine;
the testing device comprises a lower support 3, a lower support 3 and a concrete beam 2 to be tested, wherein the lower support 3 is fixedly arranged on a base of the press machine, and the concrete beam 2 to be tested is arranged between the lower support 3 and an upper support 1;
wherein, the bottom of the lower support 3 is provided with a positioning shaft 302, and the central line of the positioning shaft 302 is superposed with the central line of the upper chuck of the press;
the lower support 3 is also provided with an adjusting mechanism 4 which enables the two fulcrums on the lower support 3 to move simultaneously.
The working principle is as follows: when the lower support 3 is manufactured, the two fulcrums are symmetrical by taking the positioning shaft 302 as a center, the lower support 3 is positioned through the positioning shaft 302, the lower support 3 is installed on a base of a press machine, the upper support 1 is clamped on an upper chuck of the press machine, the lower support 3 and the upper support 1 are coaxial on the press machine, namely, the center line of the positioning shaft 302 is superposed with the center line of the upper chuck of the press machine, before a test, the distance between the two fulcrums needs to be adjusted according to different test requirements, the distance between the two fulcrums is adjusted through the adjusting mechanism 4, the two fulcrums move relative to the positioning shaft 302 simultaneously through the adjusting mechanism 4, even if the two fulcrums are close to or far away from the positioning shaft 302 simultaneously, the precision requirement of the test is ensured, after the adjustment is finished, the concrete beam 2 is placed above the two fulcrums on the lower support 3, the press machine drives the upper chuck and the upper, the test was completed.
The upper bracket 1 includes:
the press machine comprises an upper fixing body 101, wherein one end of the upper fixing body 101 is a clamping body, the clamping body is a cylinder and is used for being fixed with an upper chuck of a press machine, and the other end of the upper fixing body 101 is a press roller groove;
the upper compression roller 102 is matched with the compression roller groove and used for pressing the concrete cross beam 2;
the lower holder 3 includes:
the bottom of the lower fixing body 301 is provided with a positioning shaft 302, when the lower fixing body 301 is installed and used, the center line of the positioning shaft 302 is overlapped with the center line of an upper chuck of a press machine, two through T-shaped grooves 306 are arranged on the lower fixing body 301, and T-shaped nuts 307 are arranged in the T-shaped grooves 306;
the number of the lower supporting points is two, and the lower supporting points and the lower fixing body 301 are fixedly installed through the matching of screws and T-shaped nuts 307;
and the adjusting mechanism 4 is arranged above the lower fixing body 301 and is in threaded connection with the lower fulcrum.
The working principle is as follows: one end of the upper fixing body 101 is a clamping body, the clamping body is a cylinder, the clamping body is used for being fixed with an upper chuck of a press machine, the bottom of the lower fixing body 301 is provided with a positioning shaft 302, when the upper fixing body is installed and used, the central line of the positioning shaft 302 is overlapped with the central line of the upper chuck of the press machine, the number of lower supporting points is two, the lower supporting points and the lower fixing body 301 are fixedly installed through the matching of screws and T-shaped nuts 307, and the adjusting mechanism 4 is arranged above the lower fixing body 301 and is in threaded connection with the lower supporting points; when the distance between the lower supporting points needs to be adjusted, the screws are loosened, the lower supporting points can drive the screws and the T-shaped nuts 307 to slide along the T-shaped grooves through adjustment of the adjusting mechanism 4, when the adjustment is finished, the screws are screwed down, the lower supporting points are fixed on the lower fixing body 301, and after the adjustment is finished, the test is carried out.
The lower support point comprises:
the number of the sliding bases 304 is two, the sliding bases 304 are arranged above the lower fixing body 301 and are perpendicular to the length direction of the T-shaped groove 306, a through hole is formed in one side of each sliding base 304, a screw penetrates through the through hole to be connected with a T-shaped nut 307 and fixedly connect the sliding base 304 with the lower fixing body 301, a through threaded hole is further formed in each sliding base 304, the direction of the threaded hole is parallel to the length direction of the T-shaped groove 306, a lower compression roller groove is formed in the other side of each sliding base 304, and the length direction of the lower compression roller groove is perpendicular to the length direction of the T-shaped groove 306;
a lower press roll 305, the lower press roll 305 is matched with the lower press roll groove and is used for supporting the concrete beam 2;
wherein, the screw thread on one slide 304 is positive screw thread and the screw thread on the other slide 304 is negative screw thread, and the adjusting mechanism 4 is in screw thread connection with the screw hole on the slide 304.
The adjusting mechanism 4 includes:
a bearing housing 402, the bearing housing 402 being fixedly installed at one end of the lower fixing body 301;
and one end of the adjusting screw 403 is in fit connection with the bearing seat 402 and penetrates through the bearing seat 402, the front part of the other end of the adjusting screw 403 is provided with a positive thread, the rear part of the other end of the adjusting screw 403 is provided with a negative thread, and the positive thread and the negative thread on the adjusting screw 403 are respectively in thread fit with the positive thread and the negative thread on the two sliding seats 304.
And a hand wheel 401, wherein the hand wheel 401 is fixedly connected with one end of an adjusting screw 403.
The working principle is as follows: loosening the screws to enable the sliding bases 304 to move along the T-shaped grooves 306, rotating the hand wheel 401 clockwise, enabling the hand wheel 401 to drive the adjusting screw 403 to rotate clockwise, enabling the adjusting screw 403 to drive the two sliding bases 304 to move towards the direction close to the positioning shaft 302 along the T-shaped grooves 306 at the moment, tightening the screws to fix the sliding bases 304 on the lower fixing body 301 after adjustment is completed, and if the two sliding bases 304 need to move towards the direction far away from the positioning shaft 302 along the T-shaped grooves 306, only rotating the hand wheel 401 anticlockwise according to the steps.
The working principle is as follows: in each adjustment, an operator uses a ruler to correct the distance between the two fulcrums, the operation is troublesome, the size line 303 is arranged on the two sides of the lower fixing body 301 and is integrated with the lower fixing body 301, the distance between the two fulcrums can be observed while the movement of the fulcrums is adjusted, the amount of the ruler is not needed after the adjustment is finished, and the adjustment speed and efficiency are improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (5)
1. The utility model provides a bending test device of concrete beam which characterized in that includes:
the upper support (1), the upper support (1) is fixedly arranged on an upper chuck of the press machine;
the device comprises a lower support (3), wherein the lower support (3) is fixedly arranged on a base of a press machine, and a concrete beam (2) to be tested is placed between the lower support (3) and an upper support (1);
the bottom of the lower support (3) is provided with a positioning shaft (302), and the center line of the positioning shaft (302) is superposed with the center line of an upper chuck of the press;
the lower support (3) is also provided with an adjusting mechanism (4) which enables two fulcrums on the lower support (3) to move simultaneously.
2. Bending test device for concrete beams according to claim 1, characterized in that said upper support (1) comprises:
the clamping device comprises an upper fixing body (101), wherein one end of the upper fixing body (101) is a clamping body, the clamping body is a cylinder, the clamping body is used for being fixed with an upper chuck of a press machine, and the other end of the upper fixing body (101) is a press roller groove;
the upper pressing roller (102), the upper pressing roller (102) is installed with the pressing roller groove in a matched mode and is used for pressing the concrete cross beam (2);
the lower support (3) comprises:
the bottom of the lower fixing body (301) is provided with a positioning shaft (302), and when the lower fixing body is installed and used, the central line of the positioning shaft (302) is superposed with the central line of an upper chuck of a press machine; two through T-shaped grooves (306) are formed in the lower fixing body (301), and T-shaped nuts (307) are arranged in the T-shaped grooves (306);
the number of the lower supporting points is two, and the lower supporting points and the lower fixing body (301) are fixedly installed through the matching of screws and T-shaped nuts (307);
and the adjusting mechanism (4) is arranged above the lower fixing body (301) and is in threaded connection with the lower fulcrum.
3. A bending test apparatus for a concrete beam according to claim 2, wherein said lower fulcrum includes:
the number of the sliding seats (304) is two, the sliding seats (304) are arranged above the lower fixing body (301) and perpendicular to the length direction of the T-shaped groove (306), a through hole is formed in one side of each sliding seat (304), a screw penetrates through the through hole to be connected with a T-shaped nut (307) and fixedly connect the sliding seats (304) with the lower fixing body (301), a through threaded hole is further formed in each sliding seat (304), the direction of the threaded hole is parallel to the length direction of the T-shaped groove (306), a lower compression roller groove is formed in the other side of each sliding seat (304), and the length direction of the lower compression roller groove is perpendicular to the length direction of the T-shaped groove (306);
the lower pressing roller (305) is matched with the lower pressing roller groove and used for supporting the concrete cross beam (2);
the thread on one sliding seat (304) is a positive thread and the thread on the other sliding seat (304) is a negative thread, and the adjusting mechanism (4) is in threaded connection with the threaded hole on the sliding seat (304).
4. A bending test device for a concrete beam according to claim 3, wherein said adjusting means (4) comprises:
the bearing block (402), the bearing block (402) is fixedly arranged at one end of the lower fixed body (301);
one end of the adjusting screw rod (403) is connected with the bearing seat (402) in a matched mode and penetrates through the bearing seat (402), the front portion of the other end of the adjusting screw rod (403) is provided with a positive thread, the rear portion of the other end of the adjusting screw rod is provided with a negative thread, and the positive thread and the negative thread on the adjusting screw rod (403) are respectively matched with the positive thread and the negative thread on the two sliding seats (304) in a threaded mode;
the hand wheel (401), hand wheel (401) and adjusting screw (403)'s one end fixed connection.
5. The bending test apparatus for a concrete beam according to claim 2, wherein dimension lines (303) for observing the moving distance of the lower fulcrum are further provided at both sides of the lower fixture (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020070408.7U CN212008159U (en) | 2020-01-14 | 2020-01-14 | Bending resistance test device of concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020070408.7U CN212008159U (en) | 2020-01-14 | 2020-01-14 | Bending resistance test device of concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212008159U true CN212008159U (en) | 2020-11-24 |
Family
ID=73426953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020070408.7U Expired - Fee Related CN212008159U (en) | 2020-01-14 | 2020-01-14 | Bending resistance test device of concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212008159U (en) |
-
2020
- 2020-01-14 CN CN202020070408.7U patent/CN212008159U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209263920U (en) | A kind of special measurement collet detected automatically for moving turbine blade final inspection | |
| CN103674692A (en) | Three/four-point bending performance test general clamp for material | |
| CN212008159U (en) | Bending resistance test device of concrete beam | |
| CN218765062U (en) | Finished product quality detection device is used in concrete pole production | |
| CN212095396U (en) | Lower connecting plate synchronous clamping tool for motorcycle steering mechanism | |
| CN202470946U (en) | Device for quickly detecting precision consistency of cutting edges | |
| CN207797970U (en) | Cylinder material end holes chamfer detecting device | |
| CN207649487U (en) | A kind of measuring device of cylinder blank benchmark | |
| CN219235072U (en) | ADAS product equipment test tool | |
| CN215296125U (en) | Universal type screw rod straightness measuring device | |
| CN206095796U (en) | Tensile measuring tool of simple and convenient formula bolt | |
| CN205614062U (en) | Special lathe of high accuracy processing | |
| CN218329883U (en) | Straightness detection tool | |
| CN219590814U (en) | Flat touch scribing test device | |
| CN219027739U (en) | Water supply pipe fixed length intercepting device | |
| CN219084610U (en) | Plane strain fracture toughness SEB sample positioning device and testing machine | |
| CN110319754A (en) | A kind of forging straightness check tool and its application method | |
| CN220912978U (en) | Adjustable precious stone refractometer | |
| CN212735987U (en) | Marking device for hardware processing | |
| CN216422360U (en) | Clamp suitable for coaxial laser chip paster | |
| CN216049760U (en) | Quick detection device of gauge block thickness | |
| CN219161162U (en) | Civil engineering building material length detection device | |
| CN215640561U (en) | Combined type sample fracture measuring device | |
| CN212287612U (en) | Box scribing device | |
| CN220575031U (en) | Positioning tool for smoke tube laser processing equipment |
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: 20201124 Termination date: 20220114 |