Nut hardness detection device

Abstract

The utility model relates to the technical field of nut detection, and discloses a nut hardness detection device which comprises a hardness detection machine and a probe arranged on the hardness detection machine, the probe is sleeved with an arc-shaped seat in a sliding mode, an arc-shaped groove is formed in the arc-shaped seat, and a locking piece used for locking the position of the arc-shaped seat on the probe is installed on the arc-shaped seat; the arc-shaped seat has two position states, when the arc-shaped seat is in the first position state, the bottom end of the probe extends out of the arc-shaped groove, and when the arc-shaped seat is in the second position state, the bottom end of the probe is arranged in the arc-shaped seat and is flush with the inner wall of the arc-shaped groove. According to the nut hardness detection device provided by the utility model, through the design of the arc-shaped seat capable of switching positions and the combination of the rod type elastic detection piece, the switching between single-point hardness detection and multi-point hardness detection of the nut can be realized, and the probe can be effectively prevented from deflecting and sliding on the arc-shaped surface in a multi-point detection mode; and the accuracy and the stability of hardness detection are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut detection technical field especially relates to a nut hardness detection device. BACKGROUND

[0002] Nut, as the important component part of fastener, is widely used in machinery, car, building, aerospace multiple fields, it realizes connection and fastening function through the thread cooperation with bolt or screw rod, ensures the stable operation of mechanical equipment, needs to detect the hardness of nut in the nut production process, and the hardness detection usually uses hardness machine, and the hardness value of nut is calculated through the probe to the surface of nut certain pressure and the size of indentation is measured,

[0003] Hardness detection machine can only detect the single point of nut, when detecting the cylindrical nut, the resistance around the pressure into the arc surface of cylindrical is smaller than the plane, and the deflection slip phenomenon can be produced, and the precision of detection is influenced.

[0004] To solve the above -mentioned problem, a kind of nut hardness detection device is provided in the present application. INVENTION CONTENTS

[0005] Based on the technical problem existing in the background art, the utility model provides a kind of nut hardness detection device.

[0006] The utility model provides a kind of nut hardness detection device, including hardness detection machine and the probe installed on hardness detection machine;

[0007] The arc-shaped seat is slidably sleeved on the probe, the arc-shaped groove is formed in the arc-shaped seat, and the locking member for locking the position of the arc-shaped seat on the probe is installed on the arc-shaped seat.

[0008] The arc-shaped seat has two position states, when the arc-shaped seat is in the first position state, the bottom end of the probe extends out of the arc-shaped groove, and when the arc-shaped seat is in the second position state, the bottom end of the probe is placed in the arc-shaped seat and flush with the inner wall of the arc-shaped groove.

[0009] The outer periphery of the arc-shaped seat is provided with a plurality of assembly channels along the arc-shaped groove, a plurality of rod type elastic detection members are installed in the plurality of assembly channels, and the bottom ends of the plurality of rod type elastic detection members extend into the arc-shaped groove.

[0010] Preferably, the rod type elastic detection member includes a fixed cylinder and a controller, a plurality of fixed cylinders are installed in a plurality of assembly channels respectively, a pressure sensor located in the cavity is installed on the top end inner wall of the fixed cylinder, a partition disc is installed in the cavity, a rod type elastic part is inserted and mounted on the partition disc, and the bottom end of the rod type elastic part extends into the arc-shaped groove, and the pressure sensor is in communication connection with the controller.

[0011] Preferably, the rod type elastic part comprises a pressing rod, the middle part of the partition disc is provided with a through hole, the pressing rod is slidably arranged through the through hole, the bottom end of the pressing rod is arranged through the bottom end of the fixing cylinder and extends into the arc-shaped groove, the end of the pressing rod close to the pressure sensor is provided with a top block, the third spring is sleeved on the pressing rod and located between the partition disc and the top block, and the two ends of the third spring are connected with the partition disc and the top block respectively.

[0012] Preferably, the locking part comprises a sleeve, the middle part of the arc-shaped seat is provided with a sliding channel which is communicated with the arc-shaped groove and is used for the passing of the probe, the sleeve is arranged on the top of the arc-shaped seat and is slidably sleeved on the probe, the outer periphery of the probe is sequentially provided with a first limiting hole and a second limiting hole from top to bottom, the elastic locking part for limiting the probe is arranged on the sleeve, when the arc-shaped seat is in the first position state and the bottom end of the probe extends out of the arc-shaped groove, the elastic locking part is inserted into the first limiting hole, and when the arc-shaped seat is in the second position state and the bottom end of the probe is arranged in the sliding channel and is flush with the inner wall of the arc-shaped groove, the elastic locking part is inserted into the second limiting hole.

[0013] Preferably, the elastic locking part comprises a locking rod, the outer periphery of the sleeve is provided with a insertion hole, when the arc-shaped seat is in the first position state, the locking rod is slidably arranged through the insertion hole and is inserted into the first limiting hole, the end of the locking rod away from the sleeve is provided with an end block, the first spring is sleeved on the locking rod and is located between the sleeve and the end block, and the two ends of the first spring are connected with the sleeve and the end block respectively.

[0014] The above technical scheme of the utility model has the following beneficial technical effects:

[0015] The locking part and the rod type elastic detection part are arranged, the position of the arc-shaped seat on the probe can be limited by the locking part, the position state of the arc-shaped seat can be switched, when the arc-shaped seat is in the first position state and the bottom end of the probe extends out of the arc-shaped groove, the single point hardness of the nut can be detected by the probe, when the arc-shaped seat is in the second position state and the bottom end of the probe is arranged in the arc-shaped seat and is flush with the inner wall of the arc-shaped groove, the arc-shaped seat can be pressed on the nut, since a plurality of rod type elastic detection parts are distributed on the arc-shaped seat along the arc-shaped groove, the hardness of a plurality of points on the arc-shaped surface of the nut can be detected by the plurality of rod type elastic detection parts simultaneously, and since the plurality of rod type elastic detection parts can be pressed on the arc-shaped surface of the nut simultaneously, the phenomenon that the nut deviates and slides can be effectively prevented, the structure is designed by the arc-shaped seat which can switch positions, the rod type elastic detection part is combined, the switching of the single point and the multiple point hardness detection of the nut can be realized, the deflection and sliding of the probe on the arc-shaped surface can be effectively prevented in the multiple point detection mode, and the accuracy and the stability of the hardness detection are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic view of a nut hardness detection device is provided in the utility model.

[0017] Figure 2 A structure schematic view of a nut hardness detection device is provided in the utility model. Figure 1 A structure schematic view of a nut hardness detection device is provided in the utility model.

[0018] Figure 3 A structure schematic view of a nut hardness detection device is provided in the utility model. Figure 2 A structure schematic view of a nut hardness detection device is provided in the utility model.

[0019] The hardness detection machine is 1, the probe is 2, the arc-shaped seat is 3, the locking part is 4, the sleeve is 41, the elastic locking part is 42, the locking rod is 421, the end block is 422, the first spring is 423, the rod type elastic detection part is 5, the fixed cylinder is 51, the pressure sensor is 52, the separation disc is 53, the rod type elastic part is 54, the pressing rod is 541, the top block is 542, the third spring is 543. Specific embodiments

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below in combination with specific embodiments and referring to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] As shown in Figures 1-3 A nut hardness detection device is provided in the utility model, which comprises a hardness detection machine 1 and a probe 2 installed on the hardness detection machine 1.

[0022] In this embodiment, the arc-shaped seat 3 is slidably sleeved on the probe 2, the arc-shaped groove is formed in the arc-shaped seat 3, the locking part 4 for locking the position of the arc-shaped seat 3 on the probe 2 is installed on the arc-shaped seat 3, the arc-shaped seat 3 has two position states, when the arc-shaped seat 3 is in the first position state, the bottom end of the probe 2 extends out of the arc-shaped groove, when the arc-shaped seat 3 is in the second position state, the bottom end of the probe 2 is placed in the arc-shaped seat 3 and flush with the inner wall of the arc-shaped groove.

[0023] In the embodiment, the locking member 4 comprises a sleeve 41, the middle portion of the arc-shaped seat 3 is provided with a sliding channel penetrating through and communicating with the arc-shaped groove, and the sliding channel is used for the passing of the probe 2, the sleeve 41 is installed on the top of the arc-shaped seat 3 and is sleeved on the probe 2 in a sliding mode, the outer periphery of the probe 2 is sequentially provided with a first limiting hole and a second limiting hole from top to bottom, the sleeve 41 is provided with an elastic locking portion 42 used for limiting the probe 2, when the arc-shaped seat 3 is in the first position state, the bottom end of the probe 2 extends out of the arc-shaped groove, the elastic locking portion 42 is inserted into the first limiting hole, when the arc-shaped seat 3 is in the second position state, the bottom end of the probe 2 is placed in the sliding channel and is flush with the inner wall of the arc-shaped groove, the elastic locking portion 42 is inserted into the second limiting hole, the elastic locking portion 42 comprises a locking rod 421, the outer periphery of the sleeve 41 is provided with a insertion hole, when the arc-shaped seat 3 is in the first position state, the locking rod 421 slides through the insertion hole and is inserted into the first limiting hole, the end of the locking rod 421 away from the sleeve 41 is provided with an end block 422, the locking rod 421 is sleeved with a first spring 423 between the sleeve 41 and the end block 422, and the two ends of the first spring 423 are connected with the sleeve 41 and the end block 422 respectively.

[0024] In the embodiment, the outer periphery of the arc-shaped seat 3 is provided with a plurality of assembly channels along the arc-shaped groove, a plurality of rod type elastic detection members 5 are installed in the plurality of assembly channels, the bottom ends of the plurality of rod type elastic detection members 5 extend into the arc-shaped groove, the rod type elastic detection member 5 comprises a fixed cylinder 51 and a controller, a plurality of fixed cylinders 51 are installed in the plurality of assembly channels respectively, the inner wall of the top end of the fixed cylinder 51 is provided with a pressure sensor 52 located in a cavity, a partition disc 53 is installed in the cavity, the partition disc 53 is provided with a rod type elastic portion 54 inserted thereon, and the bottom end of the rod type elastic portion 54 extends into the arc-shaped groove, the pressure sensor 52 is communicatively connected with the controller, the rod type elastic portion 54 comprises a pressing rod 541, the middle portion of the partition disc 53 is provided with a through hole penetrating through, the pressing rod 541 slides through the through hole, the bottom end of the pressing rod 541 penetrates through the bottom end of the fixed cylinder 51 and extends into the arc-shaped groove, the end of the pressing rod 541 close to the pressure sensor 52 is provided with a top block 542, the pressing rod 541 is sleeved with a third spring 543 between the partition disc 53 and the top block 542, and the two ends of the third spring 543 are connected with the partition disc 53 and the top block 542 respectively.

[0025] It should be noted that: by pulling the locking rod 421, it is inserted into the first limiting hole or the second limiting hole on the probe 2, the position state of the arc-shaped seat 3 is switched, when the locking rod 421 is inserted into the first limiting hole, the arc-shaped seat 3 is in the first position state, the bottom end of the probe 2 extends out of the arc-shaped groove, the nut can be detected by the probe 2, when the locking rod 421 is inserted into the second limiting hole, the arc-shaped seat 3 is in the second position state, the bottom end of the probe 2 is placed in the slide way in the arc-shaped seat 3 and flush with the inner wall of the arc-shaped groove, then the arc-shaped seat 3 can be pressed on the nut, the outer periphery of the nut is placed in the arc-shaped groove, the pressure rods 541 in the plurality of fixing barrels 51 can be pressed on the different positions of the arc-shaped surface of the nut, when the pressure rods 541 are stressed, the top block 542 and the pressure sensor 52 are pressed, and the third spring 543 is stretched, when the pressure sensor 52 is stressed, the value of the stress of the pressure sensor 52 can be read by the controller, the hardness of the nut is detected, since the plurality of pressure rods 541 can be pressed on the arc-shaped surface of the nut at the same time, the phenomenon that the nut deviates and slides can be effectively prevented, the structure is designed by the arc-shaped seat 3 with switchable position, combined with the rod type elastic detection piece 5, the switch of the single point and the multi-point hardness detection of the nut can be realized, and the deflection and sliding of the probe 2 on the arc-shaped surface can be effectively prevented in the multi-point detection mode, the accuracy and stability of the hardness detection are improved.

[0026] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

Claims

1. A nut hardness detection device, comprising a hardness detection machine (1) and a probe (2) mounted on the hardness detection machine (1), characterized in that: an arc-shaped seat (3) is slidably sleeved on the probe (2), the arc-shaped seat (3) is provided with an arc-shaped groove, and a locking piece (4) is mounted on the arc-shaped seat (3) and used for locking the position of the arc-shaped seat (3) on the probe (2); the arc-shaped seat (3) has two position states, when the arc-shaped seat (3) is in the first position state, the bottom end of the probe (2) extends out of the arc-shaped groove, and when the arc-shaped seat (3) is in the second position state, the bottom end of the probe (2) is arranged in the arc-shaped seat (3) and flush with the inner wall of the arc-shaped groove; a plurality of assembly channels are formed in the outer periphery of the arc-shaped seat (3) along the arc-shaped groove, and a plurality of rod-type elastic detection pieces (5) are mounted in the assembly channels, and the bottom ends of the rod-type elastic detection pieces (5) extend into the arc-shaped groove. The rod-type elastic detection piece (5) comprises a fixed cylinder (51) and a controller, a plurality of fixed cylinders (51) are respectively mounted in a plurality of assembly channels, a pressure sensor (52) is mounted on the top end inner wall of the fixed cylinder (51) and located in a cavity, a partition disc (53) is mounted in the cavity, a rod-type elastic part (54) is inserted into the partition disc (53), and the bottom end of the rod-type elastic part (54) extends into the arc-shaped groove, and the pressure sensor (52) is in communication connection with the controller.

2. The nut hardness detection device according to claim 1, characterized in that, The rod-type elastic part (54) comprises a pressing rod (541), a through hole is formed in the middle part of the partition disc (53), the pressing rod (541) slides through the through hole, the bottom end of the pressing rod (541) penetrates through the bottom end of the fixed cylinder (51) and extends into the arc-shaped groove, a top block (542) is mounted on one end of the pressing rod (541) close to the pressure sensor (52), a third spring (543) is sleeved on the pressing rod (541) and located between the partition disc (53) and the top block (542), and the two ends of the third spring (543) are connected with the partition disc (53) and the top block (542) respectively.

3. The nut hardness detection device according to claim 2, characterized in that, The locking piece (4) comprises a sleeve (41), a slide channel is formed in the middle part of the arc-shaped seat (3) and communicates with the arc-shaped groove, and the slide channel is used for the passing of the probe (2), the sleeve (41) is mounted on the top of the arc-shaped seat (3) and slidably sleeved on the probe (2), a first limiting hole and a second limiting hole are sequentially formed in the outer periphery of the probe (2) from top to bottom, an elastic locking part (42) is mounted on the sleeve (41) and used for limiting the probe (2), when the arc-shaped seat (3) is in the first position state and the bottom end of the probe (2) extends out of the arc-shaped groove, the elastic locking part (42) is inserted into the first limiting hole, and when the arc-shaped seat (3) is in the second position state and the bottom end of the probe (2) is flush with the inner wall of the arc-shaped groove and arranged in the slide channel, the elastic locking part (42) is inserted into the second limiting hole.

4. The nut hardness detection device of claim 1, wherein ​ 5. The nut hardness detection device according to claim 4, wherein The elastic locking part (42) comprises a locking rod (421), the outer periphery of the sleeve (41) is provided with a insertion hole, when the arc-shaped seat (3) is in the first position state, the locking rod (421) slides through the insertion hole and is inserted into the first limiting hole, one end of the locking rod (421) away from the sleeve (41) is provided with an end block (422), a first spring (423) is sleeved on the locking rod (421) and located between the sleeve (41) and the end block (422), and two ends of the first spring (423) are connected with the sleeve (41) and the end block (422) respectively.

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