Auxiliary tool for bending strength test of connecting disc
Technical Field
The utility model relates to the technical field of steel pipe support connecting discs, in particular to an auxiliary tool for bending strength test of a connecting disc.
Background
With the high-speed development of the domestic building industry, the socket-type disc buckle type steel pipe bracket is used as a new material, a new process and is greatly focused in the building market, compared with the traditional steel pipe scaffold fastener, the socket-type disc buckle type steel pipe bracket has the advantages of easiness in installation and disassembly, simplicity and convenience in operation, high overall safety performance and the like, has good application prospect and market demand, and in actual use, the connecting disc can be subjected to bending force, shearing force and the like, so that the connecting disc needs to have certain bending resistance, and in order to detect the bending strength of the connecting disc, the bending strength of the connecting disc needs to be tested, and the bending resistance of the connecting disc is tested.
Patent specification publication No. CN207937285U discloses a connecting disc bending test device for a test member, which includes a support structure; a clamp provided on an upper surface of the support structure and capable of clamping a vertical rod of a test member; and a rest provided on the upper surface of the support structure and spaced apart from the jig to accurately measure the connection strength of the connection portion of the cross bar and the vertical bar in the test member by adjusting the distance from the jig to the test ram, and simultaneously, adjusting the rest to a proper position so that the abutment member can just abut against the vertical bar of the test member, thus, when the test ram applies a vertically downward force to the free end of the cross bar, the connection strength of the cross bar and the vertical bar in the test member can be accurately measured due to the support and abutment of the vertical bar by the abutment member, thereby ensuring the accuracy of the test of the connection strength of the test member.
However, it has been found in the practice of the related art that a land bending test apparatus for a test member of the above design has the following problems: according to the technical scheme, the vertical rod in the test component is inserted into the clamp and is locked through adjusting the distance from the clamp to the test pressure head, so that the connection strength of the connecting part of the cross rod and the vertical rod in the test component can be accurately measured, the accuracy of testing the connection strength of the test component is ensured, the pressure head cannot be detached and replaced, when the test components with different sizes are tested, devices with different types can be replaced for testing, the practicability is poor, and in view of the fact, the auxiliary fixture for testing the bending strength of the connecting disc is provided to overcome the defects.
Disclosure of utility model
The utility model aims to solve the defects in the prior art, and provides an auxiliary fixture for testing the bending strength of a connecting disc.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a test auxiliary fixtures of connection pad bending strength, includes the device base, the upper end of device base is fixed with the mount, the upper surface of mount is fixed with the pneumatic cylinder through the bolt fastening, the flexible end of pneumatic cylinder runs through the mount and is fixed with pressure sensor, pressure sensor's lower fixed surface has the mounting, the mounting groove has been seted up to the inside of mounting, the internally mounted of mounting groove has the test pressure head, one side of mounting is installed the fixing bolt who is connected with the test pressure head butt.
As a further description of the above technical solution: the inside of device base is fixed with biax motor through the bolt, biax motor's power take off shaft is fixed with the lead screw, the end of lead screw is rotated through spacing bearing and is connected the inner wall at the device base, through the biax motor that sets up in the device base, can drive two lead screws and rotate to adjust fixture's position, spacing bearing can guarantee the normal rotation of lead screw.
As a further description of the above technical solution: the surface of lead screw slides and is connected with the movable part, one side of movable part runs through the guide bar that is fixed mutually with the device base, when the lead screw rotates, drives threaded connection's movable part and carries out horizontal movement, and the guide bar of setting can play the effect of direction, takes place the condition of skew when avoiding the movable part to move.
As a further description of the above technical solution: the inside of moving part has been seted up the standing groove, the upper end of moving part is fixed with through the bolt and compresses tightly the electric jar, through placing the work piece that needs to test in the standing groove to carry out spacingly to the work piece.
As a further description of the above technical solution: the telescopic end of the pressing electric cylinder penetrates through the movable piece to be fixed with the mounting plate, two upper rolling shafts are connected in the mounting plate through bearing rotation, the pressing electric cylinder is started to drive the mounting plate to move, the upper rolling shafts are in contact with the upper surface of the tool, and the workpiece is clamped.
As a further description of the above technical solution: the inner wall of moving part is fixed with the fixed plate, the inside of fixed plate is connected with lower roller bearing through the bearing rotation, through lower roller bearing and the last roller bearing that sets up for the instrument can produce the bending, thereby leads to the unable normal test of work piece when avoiding the centre gripping to the work piece.
As a further description of the above technical solution: the telescopic structure is formed between the pressure sensor and the hydraulic cylinder, the rotary structure is formed between the screw rod and the double-shaft motor, and the pressure applied to a workpiece by the hydraulic cylinder can be detected through the arranged pressure sensor, so that the observation is convenient.
The utility model has the following beneficial effects:
according to the auxiliary fixture for testing the bending strength of the connecting disc, the hydraulic cylinder arranged on the fixing frame can drive the pressure sensor to move, so that the mounting piece drives the testing pressure head to vertically move, pressure is applied to a workpiece, the bending strength of the workpiece is tested, the testing pressure head can be disassembled under the cooperation of the mounting groove by screwing down the fixing bolt, the testing pressure head is convenient to replace, and the workpieces with different sizes are convenient to test.
According to the auxiliary fixture for the bending strength test of the connecting disc, which is designed by the utility model, through the double-shaft motor arranged in the base of the device, the two screw rods can be driven to rotate, so that the position of the clamping mechanism is adjusted, and the limiting bearing can ensure the normal rotation of the screw rods; when the screw rod rotates, the movable piece in threaded connection is driven to horizontally move, the guide rod can play a role in guiding, and the situation that the movable piece is deviated when moving is avoided; through lower roller bearing and the last roller bearing that set up for the instrument can produce crooked, thereby lead to the unable normal test of work piece when avoiding the centre gripping to the work piece.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic cross-sectional view of a base of the device of the present utility model;
FIG. 3 is a schematic cross-sectional view of a mounting member according to the present utility model;
fig. 4 is a schematic perspective view of a movable member according to the present utility model.
Legend description:
1. a device base; 2. a fixing frame; 3. a hydraulic cylinder; 4. a pressure sensor; 5. a mounting member; 6. a mounting groove; 7. testing a pressure head; 8. a fixing bolt; 9. a biaxial motor; 10. a screw rod; 11. a limit bearing; 12. a movable member; 13. a guide rod; 14. a placement groove; 15. compressing the electric cylinder; 16. a mounting plate; 17. an upper roller; 18. a fixing plate; 19. and a lower roller.
Detailed Description
Referring to fig. 1-4, the utility model provides an auxiliary fixture for bending strength test of a connecting disc: including device base 1, device base 1's upper end is fixed with mount 2, the upper surface of mount 2 is fixed with pneumatic cylinder 3 through the bolt fastening, the flexible end of pneumatic cylinder 3 runs through mount 2 and is fixed with pressure sensor 4, pressure sensor 4's lower fixed surface has installed mounting 5, mounting 5's inside has been seted up mounting groove 6, mounting groove 6's internally mounted has test pressure head 7, fixing bolt 8 with test pressure head 7 butt connection is installed to one side of mounting 5, hydraulic cylinder 3 through setting up on mount 2, can drive pressure sensor 4 motion, make mounting 5 drive test pressure head 7 vertical motion, apply pressure to the work piece, thereby test the bending strength of work piece, through unscrewing fixing bolt 8, under mounting groove 6's cooperation, can dismantle test pressure head 7, thereby be convenient for change test pressure head 7, the work piece of equidimension not is conveniently tested.
As a further embodiment of the above technical solution: the inside of device base 1 is fixed with biax motor 9 through the bolt, and the power take off shaft of biax motor 9 is fixed with lead screw 10, and the end of lead screw 10 is rotated through spacing bearing 11 and is connected at the inner wall of device base 1, through the biax motor 9 that sets up in the device base 1, can drive two lead screws 10 and rotate to adjust fixture's position, spacing bearing 11 can guarantee the normal rotation of lead screw 10.
As a further embodiment of the above technical solution: the surface of the screw rod 10 is connected with a movable part 12 in a sliding way, one side of the movable part 12 is penetrated with a guide rod 13 fixed with the device base 1, when the screw rod 10 rotates, the movable part 12 in threaded connection is driven to horizontally move, the guide rod 13 can play a role in guiding, and the condition that the movable part 12 is deviated during movement is avoided.
As a further embodiment of the above technical solution: the placing groove 14 is formed in the movable piece 12, the pressing electric cylinder 15 is fixed to the upper end of the movable piece 12 through bolts, and a workpiece to be tested is placed in the placing groove 14, so that the workpiece is limited.
During the implementation, before using this connection pad bending strength test auxiliary fixtures, place device base 1 to suitable position earlier, during the use, through the pneumatic cylinder 3 that sets up on mount 2, can drive pressure sensor 4 motion, make mounting 5 drive test pressure head 7 vertical motion, apply pressure to the work piece, load to Z type or B type product test moment M1 st time and unload after being added 24kN cm by 0kN cm, load to 80kN cm by 0kN cm last 2min, each part of work piece should not destroy, thereby accomplish bending strength test, when bending takes place for example the work piece, through lower roller 19 and the last roller 17 that set up, make the instrument can produce crooked, thereby avoid leading to the unable normal test of work piece when holding the work piece, through unscrewing fixing bolt 8, under the cooperation of mounting groove 6, can dismantle test pressure head 7, thereby be convenient for change test pressure head 7, the work piece of equidimension not is convenient to test.
As a further embodiment of the above technical solution: the telescopic end of the pressing electric cylinder 15 penetrates through the movable piece 12 to be fixed with a mounting plate 16, two upper rolling shafts 17 are rotatably connected to the inside of the mounting plate 16 through bearings, and the set pressing electric cylinder 15 starts to drive the mounting plate 16 to move, so that the upper rolling shafts 17 are in contact with the upper surface of a tool, and the workpiece is clamped.
As a further embodiment of the above technical solution: the inner wall of the movable piece 12 is fixed with a fixed plate 18, the inside of the fixed plate 18 is rotationally connected with a lower roller 19 through a bearing, and the tool can be bent through the lower roller 19 and the upper roller 17, so that the phenomenon that a workpiece cannot be normally tested when clamped is avoided.
As a further embodiment of the above technical solution: the telescopic structure is formed between the pressure sensor 4 and the hydraulic cylinder 3, the rotary structure is formed between the screw rod 10 and the double-shaft motor 9, and the pressure applied to a workpiece by the hydraulic cylinder 3 can be detected through the arranged pressure sensor 4, so that the observation is convenient.
During specific implementation, the workpiece to be tested is placed in the placing groove 14, the lower surfaces of two ends of the workpiece are contacted with the lower roller 19 on the fixed plate 18, the set pressing electric cylinder 15 is started to drive the mounting plate 16 to move, the upper roller 17 is contacted with the upper surface of the tool, the workpiece can be limited, when the workpiece with different sizes is required to be clamped, the two screw rods 10 can be driven to rotate through the double-shaft motor 9 arranged in the device base 1, the normal rotation of the screw rods 10 can be ensured through the limiting bearing 11, when the screw rods 10 rotate, the movable piece 12 in threaded connection is driven to horizontally move, the guide rod 13 can play a role in guiding, the condition that the movable piece 12 is offset when moving is avoided, and therefore the distance between the two placing grooves 14 is adjusted, and the workpiece with different sizes is convenient to limit.
Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present utility model can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present utility model should be included in the scope of the present utility model.