Device for detecting tensile strength of half-round head solid rivet

Abstract

The utility model discloses a half-round head solid rivet tensile strength detection device, which belongs to the technical field of rivet detection and comprises a frame body, side plates are mounted at two ends of the top of the frame body, a reserved hole is formed in the center of the top of the frame body, a lower jacket is mounted at the top of the frame body, and a pulling mechanism is arranged at the upper end between the two groups of side plates. A mounting plate is mounted at the bottom of the pulling mechanism, an upper clamping sleeve is mounted at the bottom of the mounting plate, through holes are formed in the center of the bottom of the upper clamping sleeve and the center of the top of the lower clamping sleeve, an electric cylinder is mounted on the inner side wall of the upper clamping sleeve, an arc-shaped clamping seat is mounted at the output end of the electric cylinder, and reinforcing mechanisms are arranged at the two ends of the top of the lower clamping sleeve. The lower end of the rivet can be fixed through the matching arrangement of the arc-shaped clamping seat and the electric cylinder, and the upper end of the rivet can be fixed through the arrangement of the reinforcing mechanism, so that the rivet is convenient to disassemble and assemble, the rivet is clamped more firmly, and the detection efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rivet detection's technical field especially is a kind of semicircular head solid rivet tensile strength detection device. BACKGROUND

[0002] Semicircular head solid rivet is a fastener for permanently connecting two or more material components together by riveting, which is usually composed of a head and a smooth cylindrical tail (rivet rod). Rivet connection is a commonly used assembly process for trucks, and is widely used in the connection of truck compartments. To ensure the safety of semicircular head solid rivet during use, the tensile strength of semicircular head solid rivet needs to be sampled and detected.

[0003] Patent publication No. CN221148294U discloses a hollow rivet tensile test tool, which effectively solves the problems of high cost and safety hazards. It includes a first stretching piece and a second stretching piece. The first stretching piece and the second stretching piece are structurally identical. The first stretching piece has a cavity inside. The first stretching piece has an opening on the front side. The first stretching piece has a first boss inside the cavity. The first boss includes a first straight boss, a semicircular boss and a second straight boss. The first stretching piece corresponds to a first riveting piece. The second stretching piece corresponds to a second riveting piece. The first riveting piece and the second riveting piece are structurally identical and placed upside down. The first riveting piece has a circular ring boss on the upper end. The first boss supports the circular ring boss upward. The first riveting piece has a blind hole inside. The first riveting piece has a through hole connected to the blind hole. The through hole has a hollow rivet installed inside. The hollow rivet is partially deformed to form a bump inside the second riveting piece. However, the above tool cannot effectively clamp the rivet during rivet detection. The hollow rivet needs to be partially deformed and located in the bump, which will damage the rivet, making it inconvenient to disassemble and assemble, and reducing the detection efficiency of the device. UTILITY MODEL CONTENTS

[0004] To improve the above-mentioned problem that the tool cannot effectively clamp the rivet during rivet detection, the hollow rivet needs to be partially deformed and located in the bump, which will damage the rivet and reduce the detection efficiency of the device, the utility model provides a semicircular head solid rivet tensile strength detection device.

[0005] The utility model provides a semicircular head solid rivet tensile strength detection device, which adopts the following technical scheme:

[0006] The utility model provides a kind of semi-round head solid rivet tensile strength detection device, including frame body, both ends of the top of the frame body are equipped with side plate, the center of the top of the frame body is equipped with reserved hole, the top of the frame body is equipped with lower collet, the upper end between two groups of side plates is provided with pulling mechanism, the bottom of the pulling mechanism is equipped with mounting plate, the bottom of the mounting plate is equipped with upper collet, the center of the bottom of the upper collet and the center of the top of lower collet are equipped with through-hole, the inner side wall of the upper collet is equipped with electric cylinder, the output end of the electric cylinder is equipped with arc clamping base, the top of the lower collet is equipped with reinforcing mechanism.

[0007] By adopting the above technical scheme, first, the head of the semi-round head solid rivet is downward, the semi-round head solid rivet passes through the inside of two through-holes in sequence from the reserved hole and extends into the inside of the upper collet, the head of the semi-round head solid rivet abuts against the lower collet, then the staff opens the electric cylinder, the electric cylinder extends to drive the arc clamping base to move towards the rivet, until the arc clamping base clamps on the outside of the rivet, so as to fix the upper end of the rivet, and through the arrangement of the reinforcing mechanism, the lower end of the rivet can be reinforced, so that the rivet is clamped more firmly, to avoid the rivet from falling off during detection, and to help improve the detection efficiency of the device.

[0008] Optionally, the number of the arc clamping bases is four, the four arc clamping bases are arranged in a ring shape about the center of the through-hole, and the inner side of each of the four arc clamping bases is connected with a first rubber pad.

[0009] By adopting the above technical scheme, the upper end of the rivet is fixed and clamped by the four arc clamping bases, and the first rubber pad is arranged to increase the friction between the arc clamping base and the rivet, thereby improving the stability of the rivet during clamping.

[0010] Optionally, the pulling mechanism includes a bidirectional threaded rod, the bidirectional threaded rod is connected between the upper ends of the two groups of side plates through a bearing, a right side plate is provided with a forward and reverse motor outside for driving the bidirectional threaded rod to rotate, the two ends of the outer wall of the bidirectional threaded rod are screwed with sliding seats, the surfaces of the two groups of sliding seats are hinged with connecting rods, the bottoms of the two groups of connecting rods are hinged with connecting blocks, the bottoms of the two groups of connecting blocks are equipped with tension sensors, and the bottoms of the tension sensors are fixedly connected with the top of the mounting plate, one end of the two groups of side plates close to the bidirectional threaded rod is connected with a light rod, the outer wall of the light rod is sleeved with movable sleeves at both ends, and the bottoms of the two groups of movable sleeves are fixedly connected with the tops of the two groups of sliding seats.

[0011] By adopting the technical scheme, the positive and negative motor drives the bidirectional threaded rod to rotate when working, and under the sliding cooperation of the polished rod and the movable sleeve, the bidirectional threaded rod drives the two groups of sliding seats to move and move away from each other, the sliding seat moves to drive the connecting block to move upward through the connecting rod, and then the upper clamp sleeve can be driven to move upward through the mounting plate to detect the tensile strength of the rivet. In this process, the tensile force sensor can be used to monitor the tensile force of the rivet.

[0012] Optionally, a sliding mechanism is arranged between the mounting plate and the side plate, the sliding mechanism comprises two groups of sliding blocks, the two groups of sliding blocks are respectively arranged at two ends of the mounting plate, and the inner sides of the two groups of side plates are both provided with a sliding groove, and the sliding blocks are slidably connected with the sliding grooves.

[0013] By adopting the technical scheme, when the mounting plate moves, the sliding block can slide in the sliding groove, so that the mounting plate is more stable when moving.

[0014] Optionally, the lower end of the upper clamp sleeve is connected with a pointer, and the outer side of the side plate near the pointer is marked with a scale line.

[0015] By adopting the technical scheme, during the detection of the device, the position of the pointer is observed, if the position of the pointer is consistent with the position before detection, it proves that the tensile strength of the rivet reaches the set standard, otherwise it proves that the tensile strength of the rivet is unqualified.

[0016] Optionally, the reinforcing mechanism comprises two groups of fixed plates, the two groups of fixed plates are respectively arranged at two ends of the top of the lower clamp sleeve, the middle parts of the two groups of fixed plates are both screwed with a one-way threaded rod, the side of the two groups of one-way threaded rods close to the center of the lower clamp sleeve is both provided with a clamping block, and the end of the two groups of one-way threaded rods away from the clamping block is both provided with a rotating disc.

[0017] By adopting the technical scheme, the rotating disc is rotated, the rotating disc drives the one-way threaded rod to rotate, and the one-way threaded rod drives the clamping block to move towards the rivet, so that the two groups of clamping blocks can reinforce the lower end of the rivet.

[0018] Optionally, the side of the two groups of clamping blocks close to the center of the lower clamp sleeve is both connected with a second rubber pad.

[0019] By adopting the technical scheme, the second rubber pad increases the friction between the clamping block and the rivet, so that the rivet is clamped more firmly.

[0020] Optionally, a limiting mechanism is arranged between the fixed plate and the rotating disc, the limiting mechanism comprises a limiting rod, one end of the limiting rod penetrates the rotating disc and extends into the interior of the fixed plate, a plurality of limiting holes matched with the limiting rod are formed at the edge of the rotating disc, a plurality of screw holes threaded with the limiting rod are formed on the side of the fixed plate close to the rotating disc, and the screw holes and the limiting holes are arranged one by one in a one-to-one correspondence.

[0021] By adopting the above technical scheme, when the clamping block moves to the required position, the limiting rod is threaded through the limiting hole and screwed with the interior of the screw hole, and then the rotating disc can be fixed by the limiting rod, so as to avoid the rotation of the rotating disc from affecting the clamping effect of the clamping block.

[0022] To sum up, the utility model has at least one of the following beneficial effects:

[0023] Through the cooperation of the arc-shaped clamping seat and the electric cylinder, the lower end of the rivet can be fixed, through the cooperation of the reinforcing mechanism, the upper end of the rivet can be fixed, the rivet is convenient to disassemble and assemble, the rivet is clamped more firmly, and the detection efficiency of the device is improved.

[0024] Through the cooperation of the screw hole, the limiting hole and the limiting rod, when the two groups of clamping blocks fix the rivet, the limiting rod is threaded through the interior of the limiting hole and screwed with the screw hole, and then the rotating disc can be fixed by the limiting rod, so as to avoid the rotation of the rotating disc from affecting the clamping effect of the clamping block, and the rivet is clamped more firmly. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 It is a sectional view structural schematic diagram of the utility model;

[0027] Figure 2 It is a top view structural schematic diagram of the upper clamping sleeve of the utility model;

[0028] Figure 3 It is a sectional view structural schematic diagram of the utility model; Figure 1 It is a structure schematic diagram of A in the utility model.

[0029] In the figure: 1, side plate; 2, mounting plate; 3, arc-shaped clamping seat; 4, electric cylinder; 5, upper clamping sleeve; 6, reinforcing mechanism; 601, clamping block; 602, one-way threaded rod; 603, fixed plate; 604, rotating disc; 7, through hole; 8, lower clamping sleeve; 9, reserved hole; 10, frame body; 11, pointer; 12, scale line; 13, sliding mechanism; 1301, sliding block; 1302, sliding groove; 14, pulling mechanism; 1401, forward and reverse motor; 1402, tension sensor; 1403, light pole; 1404, movable sleeve; 1405, connecting block; 1406, connecting rod; 1407, sliding seat; 1408, two-way threaded rod; 15, first rubber pad; 16, second rubber pad; 17, limiting mechanism; 1701, threaded hole; 1702, limiting hole; 1703, limiting rod. DETAILED DESCRIPTION

[0030] The following will be described in detail below Figures 1-3 The utility model is further described in detail.

[0031] Please refer to the drawings in the specification Figure 1 The utility model provides a kind of embodiment: a kind of solid rivet tensile strength detection device of half-round head, including frame body 10, the top of frame body 10 both ends are vertically installed with side plate 1, the top of frame body 10 is equipped with reserved hole 9 in center, the top of frame body 10 is fixedly installed with lower clamping sleeve 8, the upper end between two groups of side plates 1 is provided with pulling mechanism 14, and the bottom of pulling mechanism 14 is installed with mounting plate 2, and sliding mechanism 13 is arranged between mounting plate 2 and side plate 1, and sliding mechanism 13 includes two groups of sliding blocks 1301, and two groups of sliding blocks 1301 are installed at the both ends of mounting plate 2 respectively, and the inner side of two groups of side plates 1 is equipped with sliding groove 1302, and sliding block 1301 is connected with sliding groove 1302 between sliding connection.When mounting plate 2 moves, sliding block 1301 can be slid in the inside of sliding groove 1302, to make mounting plate 2 more stable when moving.

[0032] Please refer to the drawings in the specification Figure 1 The bottom of mounting plate 2 is fixedly installed with upper clamping sleeve 5, and the lower end of the two sides of upper clamping sleeve 5 is fixedly connected with pointer 11, and the end close to pointer 11 of the outer side of two groups of side plates 1 is engraved with scale line 12.During the detection of device, the position that pointer 11 points to is observed, if the position that pointer 11 points to is consistent with the position before detection, then it proves that the tensile strength of rivet reaches set standard, otherwise it proves that the tensile strength of rivet is unqualified.

[0033] Please refer to the drawings in the specification Figure 1The pulling mechanism 14 comprises a bidirectional threaded rod 1408 rotatably connected between the upper ends of the two groups of side plates 1 through bearings, a reversible motor 1401 is installed on the outer side of the right end side plate 1 for driving the bidirectional threaded rod 1408 to rotate, the outer wall of the bidirectional threaded rod 1408 is screwed with two sliding seats 1407, the surfaces of the two groups of sliding seats 1407 are hingedly connected with two connecting rods 1406, the bottoms of the two groups of connecting rods 1406 are hingedly connected with two connecting blocks 1405, the bottoms of the two groups of connecting blocks 1405 are installed with tension sensors 1402, the bottoms of the tension sensors 1402 are fixedly connected with the top of the mounting plate 2, one end of the two groups of side plates 1 close to the bidirectional threaded rod 1408 is connected with a light rod 1403, the outer wall of the light rod 1403 is slidably sleeved with two movable sleeves 1404, and the bottoms of the two groups of movable sleeves 1404 are fixedly connected with the tops of the two groups of sliding seats 1407. When the reversible motor 1401 works, the bidirectional threaded rod 1408 is driven to rotate, and under the sliding cooperation of the light rod 1403 and the movable sleeve 1404, the bidirectional threaded rod 1408 drives the two groups of sliding seats 1407 to move and move away from each other, the sliding seat 1407 moves and drives the connecting block 1405 to move upwards through the connecting rod 1406, and then the mounting plate 2 can drive the upper clamp sleeve 5 to move upwards, so as to detect the tensile strength of the rivet. In this process, the tension sensor 1402 can be used to monitor the tension of the rivet.

[0034] Please refer to the drawings in the specification Figure 1 and Figure 2 The center of the bottom of the upper clamp sleeve 5 and the center of the top of the lower clamp sleeve 8 are both provided with a through hole 7, the inner side wall of the upper clamp sleeve 5 is fixedly installed with an electric cylinder 4, the output end of the electric cylinder 4 is fixedly installed with an arc-shaped clamp seat 3, the number of the arc-shaped clamp seat 3 is four, the four arc-shaped clamp seats 3 are arranged in a ring around the center of the through hole 7, and the inner side of each of the four arc-shaped clamp seats 3 is connected with a first rubber pad 15. The upper end of the rivet is fixedly clamped through the four arc-shaped clamp seats 3, the setting of the first rubber pad 15 increases the friction between the arc-shaped clamp seat 3 and the rivet, and improves the stability of the rivet when clamped.

[0035] Please refer to the drawings in the specification Figure 1 and Figure 3The two ends of the top of the lower jacket 8 are provided with reinforcing mechanisms 6, the reinforcing mechanisms 6 comprise two groups of fixed plates 603, the two groups of fixed plates 603 are installed at the two ends of the top of the lower jacket 8 respectively, the middle parts of the two groups of fixed plates 603 are screwed with one-way threaded rods 602, the sides close to the center of the lower jacket 8 of the two groups of one-way threaded rods 602 are installed with clamping blocks 601 respectively, and the ends away from the clamping blocks 601 of the two groups of one-way threaded rods 602 are installed with rotating discs 604. Rotating the rotating disc 604, the rotating disc 604 drives the one-way threaded rod 602 to rotate, the one-way threaded rod 602 drives the clamping block 601 to move towards the direction of the rivet, so that the lower end of the rivet can be reinforced by the two groups of clamping blocks 601.

[0036] Please refer to the drawings in the specification Figure 1 and Figure 3 The sides close to the center of the lower jacket 8 of the two groups of clamping blocks 601 are fixedly connected with second rubber pads 16. The friction between the clamping block 601 and the rivet is increased through the second rubber pad 16, so that the rivet is clamped more firmly. A limiting mechanism 17 is arranged between the fixed plate 603 and the rotating disc 604, the limiting mechanism 17 comprises a limiting rod 1703, one end of the limiting rod 1703 penetrates through the rotating disc 604 and extends into the inside of the fixed plate 603, a plurality of limiting holes 1702 matched with the limiting rod 1703 are formed in the edge of the rotating disc 604, a plurality of screw holes 1701 threadedly connected with the limiting rod 1703 are formed in the side of the fixed plate 603 close to the rotating disc 604, and the plurality of screw holes 1701 and the limiting holes 1702 are arranged one by one. When the clamping block 601 moves to the required position, the limiting rod 1703 penetrates through the limiting hole 1702 and is screwed with the inside of the screw hole 1701, so that the rotating disc 604 can be fixed by the limiting rod 1703, and the rotating of the rotating disc 604 is avoided as much as possible to affect the clamping effect of the clamping block 601.

[0037] Working principle: in use, first, the head of the semicircular head solid rivet is downward, the semicircular head solid rivet penetrates through the inside of the two through holes 7 and extends into the inside of the upper jacket 5 from the reserved hole 9 in sequence, the head of the semicircular head solid rivet abuts against the lower jacket 8, then the staff opens the electric cylinder 4, the electric cylinder 4 extends and drives the arc-shaped clamping seat 3 to move towards the rivet, until the four arc-shaped clamping seats 3 are clamped on the outside of the rivet, so that the upper end of the rivet can be fixed.

[0038] Then the staff rotates the rotating disc 604, the rotating disc 604 drives the one-way threaded rod 602 to rotate, the one-way threaded rod 602 drives the clamping block 601 to move, until the clamping block 601 fixes the lower end of the rivet, at this time, one end of the limiting rod 1703 penetrates through the limiting hole 1702 on the rotating disc 604 and is screwed with the screw hole 1701, so that the rotating disc 604 can be locked and fixed by the limiting rod 1703, and the rotating of the rotating disc 604 is avoided as much as possible.

[0039] Then open the reversible motor 1401, reversible motor 1401 work when driving the double -sided thread rod 1408 rotates, under the sliding fit of the polished rod 1403 and the movable sleeve 1404, the double -sided thread rod 1408 rotates drive two groups of sliding seat 1407 move and mutually far away, sliding seat 1407 move through connecting rod 1406 drive the connecting block 1405 to move up, in this process, the tensile force sensor 1402 can be used to the rivet received the tensile force size monitor, when the rivet's monitored tensile force value reaches the set standard, the position that the observation pointer 11 points to, if the position that pointer 11 points to is consistent with the position before detection, then prove that the rivet's tensile strength reaches the set standard, otherwise prove that the rivet's tensile strength is unqualified.

[0040] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the scope of protection of the present application.

Claims

1. A device for testing the tensile strength of a semi-circular head solid rivet, comprising a frame (10), characterized in that: Side plates (1) are installed at both ends of the top of the frame (10). A reserved hole (9) is opened at the center of the top of the frame (10). A lower clamp (8) is installed at the top of the frame (10). A pulling mechanism (14) is provided at the upper end between the two sets of side plates (1). An installation plate (2) is installed at the bottom of the pulling mechanism (14). An upper clamp (5) is installed at the bottom of the installation plate (2). A through hole (7) is opened at the center of the bottom of the upper clamp (5) and the center of the top of the lower clamp (8). An electric cylinder (4) is installed on the inner side wall of the upper clamp (5). An arc-shaped clamp (3) is installed at the output end of the electric cylinder (4). A reinforcing mechanism (6) is provided at both ends of the top of the lower clamp (8).

2. The tensile strength testing device for a semi-circular head solid rivet according to claim 1, characterized in that: The number of the arc-shaped clamps (3) is four, and the four arc-shaped clamps (3) are arranged in a ring about the center of the through hole (7). The inner side of each of the four arc-shaped clamps (3) is connected to a first rubber pad (15).

3. The tensile strength testing device for a semi-circular head solid rivet according to claim 1, characterized in that: The pulling mechanism (14) includes a bidirectional threaded rod (1408), which is connected to the upper end between two sets of side plates (1) via bearings. A forward and reverse motor (1401) for driving the bidirectional threaded rod (1408) to rotate is installed on the outer side of the right side plate (1). Both ends of the outer wall of the bidirectional threaded rod (1408) are screwed with slide blocks (1407). Connecting rods (1406) are hinged to the surfaces of both sets of slide blocks (1407). The bottom of both sets of connecting rods (1406) is... A connecting block (1405) is hinged, and a tension sensor (1402) is installed at the bottom of the two sets of connecting blocks (1405). The bottom of the tension sensor (1402) is fixedly connected to the top of the mounting plate (2). A smooth rod (1403) is connected to one end of the two sets of side plates (1) near the bidirectional threaded rod (1408). Both ends of the outer wall of the smooth rod (1403) are fitted with movable sleeves (1404). The bottom of the two sets of movable sleeves (1404) is fixedly connected to the top of the two sets of slides (1407).

4. The tensile strength testing device for a semi-circular head solid rivet according to claim 1, characterized in that: A sliding mechanism (13) is provided between the mounting plate (2) and the side plate (1). The sliding mechanism (13) includes two sets of sliders (1301). The two sets of sliders (1301) are respectively installed at both ends of the mounting plate (2). The inner side of the two sets of side plates (1) is provided with a sliding groove (1302). The sliders (1301) and the sliding grooves (1302) are slidably connected.

5. The tensile strength testing device for a semi-circular head solid rivet according to claim 1, characterized in that: The lower ends of both sides of the upper sleeve (5) are connected to pointers (11), and the outer side of the two sets of side plates (1) near the pointers (11) are engraved with scale lines (12).

6. The tensile strength testing device for a semi-circular head solid rivet according to claim 1, characterized in that: The reinforcement mechanism (6) includes two sets of fixing plates (603). The two sets of fixing plates (603) are respectively installed at both ends of the top of the lower sleeve (8). A one-way threaded rod (602) is screwed into the middle of each of the two sets of fixing plates (603). A clamping block (601) is installed on the side of each of the two sets of one-way threaded rods (602) near the center of the lower sleeve (8). A turntable (604) is installed on the end of each of the two sets of one-way threaded rods (602) away from the clamping block (601).

7. The tensile strength testing device for a semi-circular head solid rivet according to claim 6, characterized in that: Both sets of clamping blocks (601) are connected to a second rubber pad (16) on the side near the center of the lower clamping sleeve (8).

8. The tensile strength testing device for a semi-circular head solid rivet according to claim 6, characterized in that: A limiting mechanism (17) is provided between the fixed plate (603) and the turntable (604). The limiting mechanism (17) includes a limiting rod (1703). One end of the limiting rod (1703) passes through the turntable (604) and extends into the interior of the fixed plate (603). Several limiting holes (1702) matching the limiting rod (1703) are provided at the edge of the turntable (604). Several screw holes (1701) that are threaded to the limiting rod (1703) are provided on the side of the fixed plate (603) near the turntable (604). Several screw holes (1701) and limiting holes (1702) are provided in a one-to-one correspondence.

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