Clamp for tensile test of nuclear power carbon steel

Abstract

The utility model discloses a clamp for a tensile test of nuclear power carbon steel, which comprises a mounting frame, an adjusting assembly is arranged on one side of a handle and comprises a cylindrical frame, the cylindrical frame is slidably connected with a first support through a sliding groove, the inner wall of the first support is rotatably connected with a bidirectional screw rod, and one end of the bidirectional screw rod is fixedly connected with a knob. The outer wall of the bidirectional lead screw is in threaded connection with a second support, the outer surface of one side of the second support is fixedly connected with a cylindrical rod and a spring, the inner wall of the first support is in threaded connection with an annular bolt, after the first support is adjusted to a proper position through an adjusting assembly, the first support is fixed, a rotary knob is rotated to drive the bidirectional lead screw to rotate, and at the moment, the second support slides front and back along the bidirectional lead screw; according to the plate clamping device, the cylindrical rods are driven to slide along the circular through holes, a plate is centered and clamped through the two symmetrical cylindrical rods, by means of the structure, the parallelism of the plate and the vertical direction can be adjusted, the plate is prevented from inclining when fixed, and the flexibility of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp devices, and more specifically to a clamp used for tensile testing of nuclear power carbon steel. Background Art

[0002] Carbon steel tensile test is a method for measuring the tensile strength, elongation and other properties of steel. Carbon steel is also called carbon steel. Carbon steel is an iron-carbon alloy with a carbon content of less than 2%. The carbon steel strength required for nuclear power buildings is strict. Carbon steel for nuclear power generally has thick plates and high strength. The carbon steel tensile test device consists of a lifting device and two clamps. The two clamps are used to clamp the two ends of the plate respectively. The traditional carbon steel tensile test clamp consists of a mounting frame, two jaws, a handle and a threaded rod. The clamp is fixed to the lifting device through the mounting frame. The threaded rod is driven to rotate by turning the handle, so that the threaded rod drives the two jaws to clamp the plate. However, when the traditional carbon steel tensile test clamp clamps the plate, there is no structure to adjust the parallelism of the plate with the vertical direction. When the plate is fixed, the plate will tilt, which affects the measurement accuracy to a certain extent. In order to solve the shortcomings of the existing technology, we propose a clamp for nuclear power carbon steel tensile test. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a clamp for tensile testing of carbon steel for nuclear power plants, so as to solve the problem that when the traditional carbon steel tensile testing clamp clamps the plate, there is no structure to adjust the parallelism of the plate with the vertical direction, and the plate will tilt when fixing the plate, which affects the measurement accuracy to a certain extent.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a clamp for tensile testing of nuclear power carbon steel, comprising a mounting frame, a handle is arranged below the mounting frame, two jaws are arranged below the handle, an adjustment component is arranged on one side of the handle, and a clamping component is arranged on one side of the two jaws;

[0005] The adjustment assembly includes a cylindrical frame, a sliding groove is provided on the outer surface of one side of the cylindrical frame, and the cylindrical frame is slidably connected to bracket one through the sliding groove, the inner wall of the bracket one is rotatably connected to a two-way screw rod, one end of the two-way screw rod is fixedly connected to a knob, the outer wall of the two-way screw rod is threadedly connected to bracket two, the outer surface of one side of the bracket two is fixedly connected to a cylindrical rod and a spring, the spring is movably sleeved on the outer wall of the cylindrical rod, the end of the spring away from the bracket two is fixedly connected to bracket one, the inner wall of the bracket one is threadedly connected to an annular bolt, and the annular bolt is used to fix bracket one to the cylindrical frame.

[0006] A circular through hole is provided on the outer surface of one side of the bracket one, and the cylindrical rod passes through the bracket one from the circular through hole, and the cylindrical rod is vertically centered with respect to the cylindrical frame.

[0007] There are two of each of the bracket 2, cylindrical rod and spring, which are symmetrically distributed on the front and rear sides of the cylindrical frame.

[0008] In which, the clamping assembly includes a hollow tube, which is fixedly mounted on the bottom surface of the mounting frame, a sliding rod is provided at the bottom of the hollow tube, and the bottom surface of the sliding rod is fixedly connected to a threaded rod, the top of the handle is fixedly connected to a bevel gear 1, the bevel gear 1 is rotatably connected to the hollow tube, the handle is rotatably connected to the cylindrical frame, the threaded rod is threadedly connected to the inner wall of the handle, the outer wall of the hollow tube is rotatably connected to a bevel gear 2, the bevel gear 2 is meshed with the bevel gear 1, one end of the rotating shaft of the bevel gear 2 is fixedly connected to a handwheel, the outer wall of the threaded rod is fixedly mounted with a square slider, the square slider is slidably connected to the inner wall of the cylindrical frame, the bottom end of the threaded rod is fixedly mounted with a disc, and the outer surfaces of one side of the two jaws are provided with arc grooves.

[0009] Among them, an isosceles trapezoidal notch is opened on the outer surface of one side of the cylindrical frame, and the two jaws are slidably connected to the inclined surfaces on the left and right sides of the isosceles trapezoidal notch of the cylindrical frame respectively. The disc is located between the two arc-shaped grooves, and the purpose is to apply downward thrust or upward pulling force to the jaws.

[0010] Wherein, a cross-shaped through hole is opened on the inner wall of the hollow tube, the sliding rod has a cross-shaped profile, and the sliding rod is slidably connected to the hollow tube through the cross-shaped through hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model uses an adjustment component including a cylindrical rod, loosens the annular bolt, moves the bracket one up and down, and after adjusting the bracket one to a suitable position, tightens the annular bolt to fix the bracket one, and rotates the knob to drive the bidirectional screw rod to rotate. At this time, the bracket two will slide back and forth along the bidirectional screw rod, and drive the cylindrical rod to slide along the circular through hole. The plate is clamped in the center through two symmetrical cylindrical rods, and pressure is applied to the bracket two through a spring, thereby increasing the friction between the bracket two and the knob to prevent the bracket two from loosening. With the above structure, the plate is clamped in the center by rotating the knob, and the parallelism of the plate with the vertical direction can be adjusted, which avoids the plate from tilting when the plate is fixed, improves the measurement accuracy, and improves the flexibility of the device.

[0013] The utility model uses a clamping component including a hollow tube to fix a plate, firstly rotate the hand wheel to make the bevel gear two drive the bevel gear one and the handle to rotate, so as to quickly adjust the clamping size, and the disc applies downward pressure to the two jaws to drive the two jaws to move downward, at which time the clamping size is reduced, and then the handle is rotated to clamp the plate. By utilizing the above structure, the clamping size can be quickly adjusted by rotating the hand wheel, which can save the time of clamping the plate and increase the efficiency of the tensile test. In addition, since the cylindrical frame and the hollow tube are relatively stationary, twisting or pulling of the plate during the clamping process is avoided, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0016] Figure 3 This is a schematic diagram of the partially disassembled structure of the adjustment component of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0018] Figure 5 It is a schematic diagram of the partially disassembled structure of the clamping assembly of the utility model.

[0019] [reference numerals]

[0020] 1. Mounting frame; 2. Handle; 3. Jaw; 4. Adjustment assembly; 5. Clamping assembly; 41. Cylindrical frame; 42. Slide groove; 43. Bracket 1; 44. Bidirectional screw rod; 45. Knob; 46. Bracket 2; 47. Cylindrical rod; 48. Spring; 49. Ring bolt; 51. Hollow tube; 52. Sliding rod; 53. Threaded rod; 54. Bevel gear 1; 55. Bevel gear 2; 56. Handwheel; 57. Square slider; 58. Disc; 59. Arc groove. DETAILED DESCRIPTION

[0021] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0022] As attached Figure 1 To Attachment Figure 5 The embodiment of the utility model provides a clamp for tensile testing of nuclear power carbon steel, comprising a mounting frame 1, a handle 2 is arranged below the mounting frame 1, two jaws 3 are arranged below the handle 2, an adjustment component 4 is arranged on one side of the handle 2, and a clamping component 5 is arranged on one side of the two jaws 3;

[0023] The adjustment assembly 4 includes a cylindrical frame 41, a slide groove 42 is provided on the outer surface of one side of the cylindrical frame 41, and the cylindrical frame 41 is slidably connected to a bracket 1 43 through the slide groove 42. The inner wall of the bracket 1 43 is rotatably connected to a bidirectional screw rod 44, one end of the bidirectional screw rod 44 is fixedly connected to a knob 45, and the outer wall of the bidirectional screw rod 44 is threadedly connected to a bracket 2 46, and the outer surface of one side of the bracket 2 46 is fixedly connected to a cylindrical rod 47 and a spring 48, and the spring 48 is movably sleeved on the outer wall of the cylindrical rod 47, and one end of the spring 48 away from the bracket 2 46 is fixedly connected to the bracket 1 43, and the inner wall of the bracket 1 43 is threadedly connected to an annular bolt 49, and the annular bolt 49 is used to fix the bracket 1 43 to the cylindrical frame 41.

[0024] A circular through hole is formed on the outer surface of one side of the bracket 43, and a cylindrical rod 47 passes through the bracket 43 from the circular through hole. The cylindrical rod 47 is vertically centered with respect to the cylindrical frame 41;

[0025] By loosening the annular bolt 49, the bracket 43 can be moved up and down, and by fixing the annular bolt 49, the bracket 43 can be fixed. By rotating the knob 45, the bidirectional screw rod 44 can be driven to rotate. Under the action of the cylindrical rod 47 and the bracket 1 43, the bracket 2 46 cannot rotate around the bidirectional screw rod 44. At this time, the bracket 2 46 will slide back and forth along the bidirectional screw rod 44 and drive the cylindrical rod 47 to slide along the circular through hole.

[0026] Among them, there are two brackets 46, two cylindrical rods 47 and two springs 48, which are symmetrically distributed on the front and rear sides of the cylindrical frame 41;

[0027] The plate can be clamped in the center by two symmetrical cylindrical rods 47, so as to adjust the parallelism of the plate with the vertical direction. The spring 48 can apply pressure to the second bracket 46, so as to increase the friction between the second bracket 46 and the knob 45 and prevent the second bracket 46 from loosening.

[0028] Among them, the clamping assembly 5 includes a hollow tube 51, which is fixedly installed on the bottom surface of the mounting frame 1, a sliding rod 52 is provided at the bottom of the hollow tube 51, and a threaded rod 53 is fixedly connected to the bottom surface of the sliding rod 52, a bevel gear 1 54 is fixedly connected to the top of the handle 2, the bevel gear 1 54 is rotatably connected to the hollow tube 51, the handle 2 is rotatably connected to the cylindrical frame 41, the threaded rod 53 is threadedly connected to the inner wall of the handle 2, the outer wall of the hollow tube 51 is rotatably connected to the bevel gear 2 55, the bevel gear 2 55 is meshed with the bevel gear 1 54, one end of the rotating shaft of the bevel gear 2 55 is fixedly connected to a hand wheel 56, a square slider 57 is fixedly installed on the outer wall of the threaded rod 53, the square slider 57 is slidably connected to the inner wall of the cylindrical frame 41, a disc 58 is fixedly installed on the bottom end of the threaded rod 53, and an arc groove 59 is provided on the outer surface of one side of the two jaws 3;

[0029] The square slider 57 is slidably connected to the inner wall of the cylindrical frame 41, so that the threaded rod 53 can only slide up and down relative to the cylindrical frame 41. Since the threaded rod 53 is threadedly connected to the inner wall of the handle 2, when the handle 2 is turned, the threaded rod 53 can be driven to move up and down. At the beginning stage of adjusting the clamping size, the clamping size can be quickly adjusted by turning the hand wheel 56, and finally the handle 2 is turned to clamp the plate.

[0030] Among them, an isosceles trapezoidal notch is opened on one side of the outer surface of the cylindrical frame 41, and the two jaws 3 are respectively slidably connected with the inclined surfaces on the left and right sides of the isosceles trapezoidal notch of the cylindrical frame 41, and the disc 58 is located between the two arc-shaped grooves 59, so as to apply downward thrust or upward pulling force to the jaws 3;

[0031] The disc 58 is driven upward by the threaded rod 53, and the disc 58 drives the two jaws 3 to move upward. At this time, the clamping size can be increased. When the threaded rod 53 drives the disc 58 to press downward, it will drive the two jaws 3 to move downward. At this time, the clamping size is reduced and the plate is clamped.

[0032] The inner wall of the hollow tube 51 is provided with a cross-shaped through hole, the sliding rod 52 has a cross-shaped profile, and the sliding rod 52 is slidably connected to the hollow tube 51 through the cross-shaped through hole;

[0033] The sliding rod 52 is slidably connected to the hollow tube 51 , so that the hollow tube 51 , the threaded rod 53 , the square slider 57 and the cylindrical frame 41 cannot rotate relative to each other, and the cylindrical frame 41 remains stationary relative to the hollow tube 51 .

[0034] The working process of the utility model is as follows:

[0035] First, loosen the annular bolt 49, move the bracket 1 43 up and down, adjust the bracket 1 43 to a suitable position, tighten the annular bolt 49, fix the bracket 1 43, rotate the knob 45 to drive the bidirectional screw rod 44 to rotate, and then the bracket 2 46 will slide back and forth along the bidirectional screw rod 44, and drive the cylindrical rod 47 to slide along the circular through hole, and the plate will be clamped in the center through the two symmetrical cylindrical rods 47, so as to adjust the parallelism of the plate with the vertical direction, and apply pressure to the bracket 2 46 through the spring 48, so as to adjust the parallelism of the plate with the vertical direction. The friction between the bracket 2 46 and the knob 45 is increased to prevent the bracket 2 46 from loosening. When fixing the plate, first turn the hand wheel 56 to make the bevel gear 2 55 drive the bevel gear 1 54 and the handle 2 to rotate, and quickly adjust the clamping size. The disk 58 applies downward pressure to the two jaws 3 to drive the two jaws 3 to move downward. At this time, the clamping size is reduced, and then the handle 2 is turned to clamp the plate. Since the cylindrical frame 41 and the hollow tube 51 are relatively stationary, twisting or pulling of the plate is avoided during the clamping process.

[0036] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0037] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0038] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A fixture for tensile testing of nuclear power carbon steel, comprising a mounting frame (1), characterized in that: A handle (2) is provided below the mounting frame (1), two jaws (3) are provided below the handle (2), an adjustment assembly (4) is provided on one side of the handle (2), and a clamping assembly (5) is provided on one side of the two jaws (3); The adjustment assembly (4) comprises a cylindrical frame (41), a slide groove (42) is provided on the outer surface of one side of the cylindrical frame (41), the cylindrical frame (41) is slidably connected to a bracket one (43) through the slide groove (42), the inner wall of the bracket one (43) is rotatably connected to a bidirectional screw rod (44), one end of the bidirectional screw rod (44) is fixedly connected to a knob (45), the outer wall of the bidirectional screw rod (44) is threadedly connected to a bracket two (46), the outer surface of one side of the bracket two (46) is fixedly connected to a cylindrical rod (47) and a spring (48), the spring (48) is movably sleeved on the outer wall of the cylindrical rod (47), the end of the spring (48) away from the bracket two (46) is fixedly connected to the bracket one (43), the inner wall of the bracket one (43) is threadedly connected to a ring bolt (49), and the ring bolt (49) is used to fix the bracket one (43) to the cylindrical frame (41).

2. The clamp for tensile testing of nuclear power carbon steel according to claim 1, characterized in that: A circular through hole is provided on one side outer surface of the bracket one (43), and the cylindrical rod (47) passes through the bracket one (43) from the circular through hole. The cylindrical rod (47) is vertically centered with respect to the cylindrical frame (41).

3. The fixture for tensile testing of nuclear power carbon steel according to claim 1, characterized in that: The second bracket (46), the cylindrical rod (47) and the spring (48) are each in two pieces and are symmetrically distributed on the front and rear sides of the cylindrical frame (41).

4. The fixture for tensile testing of nuclear power carbon steel according to claim 1, characterized in that: The clamping assembly (5) comprises a hollow tube (51), the hollow tube (51) is fixedly mounted on the bottom surface of the mounting frame (1), a sliding rod (52) is arranged at the bottom of the hollow tube (51), a threaded rod (53) is fixedly connected to the bottom surface of the sliding rod (52), a bevel gear 1 (54) is fixedly connected to the top of the handle (2), the bevel gear 1 (54) is rotatably connected to the hollow tube (51), the handle (2) is rotatably connected to the cylindrical frame (41), and the threaded rod (53) is threadedly connected to the inner wall of the handle (2). The outer wall of the hollow tube (51) is rotatably connected to a bevel gear 2 (55), the bevel gear 2 (55) is meshed with a bevel gear 1 (54), one end of the rotating shaft of the bevel gear 2 (55) is fixedly connected to a hand wheel (56), the outer wall of the threaded rod (53) is fixedly mounted with a square slider (57), the square slider (57) is slidably connected to the inner wall of the cylindrical frame (41), the bottom end of the threaded rod (53) is fixedly mounted with a disc (58), and an arc groove (59) is provided on the outer surface of one side of the two jaws (3).

5. The fixture for tensile testing of nuclear power carbon steel according to claim 4, characterized in that: An isosceles trapezoidal notch is provided on one outer surface of the cylindrical frame (41), and the two jaws (3) are respectively slidably connected to the inclined surfaces on the left and right sides of the isosceles trapezoidal notch of the cylindrical frame (41), and the disc (58) is located between the two arc-shaped grooves (59) so as to apply a downward thrust or an upward pull to the jaws (3).

6. The fixture for tensile testing of nuclear power carbon steel according to claim 4, characterized in that: The inner wall of the hollow tube (51) is provided with a cross-shaped through hole, the sliding rod (52) has a cross-shaped profile, and the sliding rod (52) is slidably connected to the hollow tube (51) via the cross-shaped through hole.

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