CN210375975U

CN210375975U - Dumbbell pin factory strength test device

Info

Publication number: CN210375975U
Application number: CN201921293836.XU
Authority: CN
Inventors: 郭宇鹏; 郭文亮; 赵丽霞; 郭文娜; 王志国
Original assignee: Shanxi Coal Mining Machinery Manufacturing Co ltd
Current assignee: Shanxi Coal Mining Machinery Manufacturing Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-04-21
Anticipated expiration: 2029-08-12

Abstract

The utility model belongs to the technical field of the dumbbell round pin, concretely relates to dumbbell round pin factory strength test device, including last child and lower child, go up child and child relative sliding connection down, go up the child and respectively seted up the round hole with lower child, the round hole can be put into to the dumbbell round pin. The dumbbell pin simulates the actual working condition, is arranged in a test device, is positioned by the fixture block and the limiting pin, the safety baffle is pushed leftwards to the left end along the chute, then the press machine is used for pressurizing until the dumbbell is broken, and the numerical value of the press machine is recorded, namely the breaking strength of the dumbbell. This dumbbell test device can be more accurate test out the breaking strength of dumbbell, provides powerful data for scraper conveyor's design, has avoided because dumbbell intensity is not enough, causes the extensive cracked occurence of failure of dumbbell, when improving customer satisfaction, has also reduced the after-sale cost, has also avoided simultaneously because the excessive design causes the material extravagant.

Description

Dumbbell pin factory strength test device

Technical Field

The utility model belongs to the technical field of the dumbbell round pin, concretely relates to dumbbell round pin factory strength test device.

Background

The dumbbell pin is an important part of a scraper conveyor, is usually integrally forged by high-quality alloy steel, and obtains enough toughness and extrusion strength after a certain heat treatment process. The dumbbell pin has the effects that the dumbbell pin is connected with each middle groove to ensure the integrity of each middle groove; and secondly, the ledge is protected, and the ledge is prevented from being damaged by cracking due to overlarge stress in the moving process of the middle groove, so that the requirement on the breaking strength of the dumbbell pin is very strict in the design of the dumbbell pin, and the technical requirements of common drawings are clearly specified.

The breaking strength of the dumbbell pin is high, so that the difficulty in directly measuring the breaking strength is high, the breaking strength is approximately obtained by adopting a method of tensile strength sigma b and dumbbell sectional area S at present, the calculation method can reflect the breaking strength in a certain sense, but the calculation method can only be used as a reference index, and an effective test means is not provided, so that the strength is directly tested. Moreover, the dumbbell pin is large in batch, and once problems occur, the dumbbell pin can greatly affect the use of customers and companies. Therefore, it is necessary to design a device capable of performing factory test on the strength of the dumbbell pin.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a dumbbell round pin strength test device that dispatches from factory. The device adopts upper and lower child combination slidingtype structure, converts pressure into the pulling force, and the breaking strength numerical value of dumbbell is read out to very accurate in the instruction list of follow press, and then judges whether the dumbbell round pin is qualified. The utility model discloses the technical scheme who adopts as follows:

the utility model provides a dumbbell round pin delivery strength test device, carries out the strength test to the dumbbell round pin, the dumbbell round pin comprises cylinder and the end that both ends are fixed, the device includes child and lower child, it includes cardboard I, guide arm and top board to go up the child, cardboard I passes through the guide arm and is connected with the top board, the child includes cardboard II, curb plate and holding down plate down, cardboard II passes through the curb plate and is connected with the holding down plate, the guide hole has been seted up on the cardboard II, guide hole and guide arm looks adaptation, and cardboard I that is connected with the guide arm is in the space that cardboard II, curb plate and holding down plate formed, round hole I has been seted up to cardboard I, open round hole II on the cardboard II, round hole II is coaxial and the diameter equals with round hole I, the diameter of round hole I and round hole II is less than the diameter of end and is greater than the diameter of cylinder.

The clamping plate I is characterized in that a square groove I is further formed in the long edge on one side of the clamping plate I, a square groove II is formed in the same side edge of the clamping plate II as the clamping plate I, the square groove I and the square groove II are coaxial and have the same side length, the square groove I is communicated with the round hole I, the square groove II is communicated with the round hole II, and the side length of the square groove I and the side length of the square groove II are larger than the diameter of the cylinder.

The device further comprises a connecting end I and a connecting end II, the round hole I is replaced by the connecting end I, the connecting end I can be matched with the convex end of the middle ledge, the round hole II is replaced by the connecting end II, and the connecting end II can be matched with the concave end of the middle ledge.

The device also comprises a safety baffle, wherein a sliding groove is formed in the lower pressing plate, and the safety baffle is connected with the sliding groove in a sliding mode.

The device further comprises a clamping block and a positioning pin, wherein the clamping block is installed at one end of the dumbbell pin, and the clamping block is fixed by the positioning pin.

The guide rod and the guide hole are respectively provided with at least two.

Compared with the prior art, the utility model discloses the beneficial effect who has does:

1. this patent adopts the gliding technical scheme of upper and lower child combination, simulates the use operating mode of dumbbell round pin, turns into the pulling force with pressure, and the breaking strength of test play dumbbell that can be more accurate provides powerful data for scraper conveyor's design, has avoided because dumbbell intensity is not enough, causes the large-scale cracked occurence of failure of dumbbell, is superior to among the prior art test that makes tensile strength with universal stretcher far away, then calculates out the breaking strength of dumbbell round pin according to the formula roughly.

2. The round hole I and the round hole II of this patent replace with the connection end of ledge female end and ledge protruding end looks adaptation, better simulation dumbbell's service condition, make actual test's numerical value more accurate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the upper tire of the present invention;

FIG. 3 is a schematic structural view of the lower tire of the present invention;

wherein, 1 is the upper tyre, 2 is the lower tyre, 3 is cardboard I, 4 is the guide arm, 5 is the top board, 6 is cardboard II, 7 is the curb plate, 8 is the holding down plate, 9 is the guide hole, 10 is round hole I, 11 is round hole II, 12 is the dumbbell pin, 13 is the cylinder, 14 is the end, 15 is connecting end I, 16 is connecting end II, 17 is the safety shield, 18 is the spout, 19 is the fixture block, 20 is the locating pin, 21 is square groove I, 22 is square groove II.

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.

As shown in FIG. 1, a dumbbell pin factory strength testing device is used for testing the strength of a dumbbell pin 12, the dumbbell pin comprises a column 13 and end heads 14 fixed at two ends, the dumbbell pin comprises an upper tire 1 and a lower tire 2, the upper tire 1 comprises a clamping plate I3, a guide rod 4 and an upper pressing plate 5, the guide rod 4 is fixed at two ends of the clamping plate I3, the guide rod 4 is connected with a clamping plate I3 and the upper pressing plate 5, the lower tire 2 comprises a clamping plate II6, a side plate 7 and a lower pressing plate 8, the side plate II6 is fixed at two ends, the side plate 7 is connected with a clamping plate II6 and the lower pressing plate 8, a guide hole 9 is formed in the clamping plate II6, the position of the guide hole 9 corresponds to the guide rod 4, the guide rod 4 passes through the guide hole 9, the clamping plate I3 connected with the guide rod 4 is positioned in a space formed by the clamping plate II6, the side plate 7 and the lower pressing plate 8, a circular hole I10 is formed by the clamping, the round hole II11 is coaxial with and has the same diameter as the round hole I10, and the diameters of the round hole I10 and the round hole II11 are smaller than the diameter of the head 14 and larger than the diameter of the column body 13.

As shown in fig. 2 and 3, in this embodiment, a square groove I21 is further formed on the long side of one side of the snap-gauge I3, a square groove II22 is formed on the same side of the snap-gauge II6 as the snap-gauge I3, the square groove I21 and the square groove II22 are coaxial and have equal side length, the square groove I21 is communicated with the round hole I10, the square groove II22 is communicated with the round hole II11, the side length of the square groove I21 and the square groove II22 is greater than the diameter of the column, and the square groove I21 and the square groove II22 are provided to allow the dumbbell pin 12 to enter the round hole I10 and the round hole II11 through the square groove I21 and the square groove II 22.

Wherein, the clamping plate I and the clamping plate II are used for clamping two ends 14 of the dumbbell pin 12, the round hole I10 and the round hole II11 are used for combining together to put the cylinder of the dumbbell pin 12 into the round hole I10 and the round hole II11, the upper pressing plate 5 is connected to the press, the lower pressing plate 8 is placed on the ground, the guide rod 4 can slide in the guide hole 9, and simultaneously the clamping plate I3 and the upper pressing plate 5 are connected, when the press applies pressure to the upper pressing plate 5, the lower pressing plate 9 is placed on the ground and can not move, the upper pressing plate 5 and the lower pressing plate 9 do relative movement with reduced distance, at the moment, the clamping plate 5639 and the clamping plate II6 connected with the upper pressing plate 5 and the lower pressing plate 9 do relative movement with increased distance, the dumbbell pins clamped on the clamping plate I3 and the clamping plate II6 obstruct the relative movement, the dumbbell pin 12 is subjected to the pulling force from the clamping plate I3 and the clamping plate II6, because the clamping, the magnitude of the tensile force applied to dumbbell pin 12 is equal to the magnitude of the pressure applied by the press of upper press plate 5, and the pressure value read from the indicator in the press is the value of the tensile force applied to dumbbell pin 12 by the device, so that the magnitude of the tensile force applied to dumbbell pin 12 can be accurately measured.

Furthermore, the external connection end I15 of the round hole I10 in this embodiment is a special shape, and can be matched with the convex end of the ledge, and can be processed into the shape of the concave end of the ledge for convenience of processing; similarly, the shape of the external connection end II16 of the round hole II11 can be processed into the shape of a ledge convex end, so that the working condition can be better simulated, and the problem of complex processing is avoided.

Preferably, the present embodiment further includes a safety guard 17, and the safety guard 17 is used to move leftwards along the sliding slot 18 to the left end, so as to prevent the broken dumbbell pin 12 from collapsing out.

Preferably, the dumbbell pin 12 further comprises a fixture block 19 and a limit pin 20, and the fixture block 19 and the limit pin 20 are mounted on the dumbbell pin 12 and are used for fixing the dumbbell pin 12 and preventing the dumbbell pin 12 from rotating in the testing process to affect the precision of the testing result.

The guide rod 4 in this embodiment adopts two, and the purpose of adopting two guide rods 4 is that the atress that makes cardboard I3 both ends is even, also can decompose the pressure of press to top board 5 simultaneously, avoids leading to this device's life to shorten because pressure is too big, and two curb plates 7 play the effect of supporting cardboard II 6.

The principle of the utility model is that:

the dumbbell pin simulates the actual working condition, is loaded into a test device, is positioned by the fixture block 19 and the limiting pin 20, the safety baffle 17 is pushed leftwards along the chute 18 to the left end, then the press is pressurized, the pressure applied by the press is converted into the tension of the dumbbell pin 12 due to the structural design, the pressure is continuously pressurized until the dumbbell is broken, and the numerical value of the press is recorded as the breaking strength of the dumbbell.

The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.

Claims

1. The utility model provides a dumbbell pin factory strength test device carries out intensity test to dumbbell pin (12), dumbbell pin (12) comprise cylinder (13) and end (14) that both ends are fixed, its characterized in that: the tire comprises an upper tire (1) and a lower tire (2), wherein the upper tire (1) comprises a clamping plate I (3), a guide rod (4) and an upper pressing plate (5), the clamping plate I (3) is connected with the upper pressing plate (5) through the guide rod (4), the lower tire (2) comprises a clamping plate II (6), a side plate (7) and a lower pressing plate (8), the clamping plate II (6) is connected with the lower pressing plate (8) through the side plate (7), a guide hole (9) is formed in the clamping plate II (6), the guide hole (9) is matched with the guide rod (4), the clamping plate I (3) connected with the guide rod (4) is positioned in a space formed by the clamping plate II (6), the side plate (7) and the lower pressing plate (8), a round hole I (10) is formed in the center of the clamping plate I (3), a round hole II (11) is formed in the clamping plate II (6), the round hole II (11) is coaxial with the round hole I (10, the diameters of the round holes I (10) and the round holes II (11) are smaller than the diameter of the end head (14) and larger than the diameter of the cylinder body (13).

2. The dumbbell pin factory strength testing device of claim 1, wherein: the novel clamp plate is characterized in that a square groove I (21) is further formed in the long edge on one side of the clamp plate I (3), a square groove II (22) is formed in the side edge, which is the same as the clamp plate I (3), of the clamp plate II (6), the square groove I (21) is coaxial with the square groove II (22), the side length of the square groove I (22) is equal to that of the square groove II, the square groove I (21) is communicated with the round hole I (10), the square groove II (22) is communicated with the round hole II (11), and the side length of the square groove I (21) is larger than the diameter of the column body (13.

3. The dumbbell pin factory strength testing device of claim 1, wherein: the device further comprises a connecting end I (15) and a connecting end II (16), the round hole I (10) is replaced by the connecting end I (15), the connecting end I (15) can be matched with the convex end of the middle ledge, the round hole II (11) is replaced by the connecting end II (16), and the connecting end II (16) can be matched with the concave end of the middle ledge.

4. The dumbbell pin factory strength testing device of claim 1, wherein: the device also comprises a safety baffle (17), a sliding groove (18) is formed in the lower pressing plate (8), and the safety baffle (17) is connected with the sliding groove (18) in a sliding mode.

5. The dumbbell pin factory strength testing device of claim 1, wherein: the device further comprises a clamping block (19) and a positioning pin (20), wherein the clamping block (19) is installed at one end of the dumbbell pin, and the clamping block (19) is fixed by the positioning pin (20).

6. The dumbbell pin factory strength testing apparatus according to any one of claims 1 to 5, wherein: the guide rod (4) and the guide hole (9) are respectively provided with at least two.