Automatic loading Leeb hardness measuring device

Abstract

The utility model relates to the technical field of hardness measuring devices, in particular to an automatic loading Leeb hardness measuring device. The telescopic assembly is connected to a sliding sleeve of the Leeb hardness tester; a trigger reset switch is arranged above the Leeb hardness tester; a linear bearing is fixed on the box body; a linear guide shaft in sliding connection with the linear bearing is fixed on the fixed seat; the linear guide shaft is sleeved with a second spring. The two ends of the second spring are connected between the box body and the fixing base. When in use, the structure can be connected to lifting equipment to be matched with the telescopic assembly and the trigger reset switch, so that automatic measurement of the Leeb hardness measuring device of a product can be realized; labor intensity is reduced, and measuring efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardness measuring devices, in particular to an automatic loading Leeb hardness measuring device. Background Art

[0002] Leeb hardness tester is also called Leeb hardness tester. It is a kind of testing equipment, mainly used for on-site rapid hardness testing. Its principle is that with the development of monolithic technology, in 1978, Swiss Dr. Leeb first proposed a new hardness testing method. Its basic principle is to use a certain mass of impact body to impact the surface of the material to be tested at a certain speed, and the impact body will produce impact rebound on the surface of the material to be tested. Leeb hardness is to measure the hardness of the material by the ratio of the speed of the impact body before and after the impact on the surface of the material to be tested.

[0003] The existing Leeb hardness tester 2 generally consists of a hollow structure sliding rod 201, a sliding sleeve 202 slidably connected to the outside of the sliding rod 201, a clamp 204 connected to the sliding sleeve 202, a trigger button 203 located at the top of the sliding sleeve 202 and used to trigger the clamp 204 to open, a support ring 205 fixed to the bottom end of the sliding rod 201, and an impact body 206 that can slide in the sliding rod 201;

[0004] The support ring 205 is supported on the surface of the workpiece to be tested, and the sliding sleeve 202 moves downward with the clamp 204. After the clamp 204 automatically clamps and fixes the impact body 206, the sliding sleeve 202 rises and resets to the set height; then the trigger button 203 is operated; when the trigger button 203 is pressed, the clamp 204 releases the impact body 206, so that the impact body 206 moves freely in fall (there is also a spring added to the sliding rod 201, and the spring is compressed to store energy during the rising process of the impact body 206. After the clamp 204 releases the impact body 206, the elastic force of the spring plus the impact body 206's own gravity accelerates the impact body 206), and the workpiece to be tested is tested; the descent speed of the impact body 206 during the descent process and the rebound speed of the impact body 206 after hitting the surface to be tested are measured by the host device (the two speeds are collected at the same collection point); the hardness value data can be obtained through data analysis of the measured speed.

[0005] However, in the existing Leeb hardness measuring device, manual operation is required to release the measurement button and load the action, resulting in low test efficiency and high labor intensity. Utility Model Content

[0006] The utility model aims to provide an automatic loading Leeb hardness measuring device in view of the defects and shortcomings of the prior art.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] The utility model discloses an automatic loading Leeb hardness measuring device, which comprises a Leeb hardness tester, a fixing seat and a box; the supporting ring of the Leeb hardness tester is fixed on the box; a telescopic component is arranged inside the box; the telescopic component is connected to the sliding sleeve of the Leeb hardness tester;

[0009] A trigger reset switch is arranged above the Leeb hardness tester; a linear bearing is fixed on the box; a linear guide shaft slidably connected to the linear bearing is fixed on the fixed seat; a second spring is sleeved on the outside of the linear guide shaft; and both ends of the second spring are connected between the box and the fixed seat.

[0010] Furthermore, the trigger reset switch includes a trigger rod, a first spring sleeved outside the trigger rod and an electromagnet fixed on the box; a push plate is fixed on the rod body of the trigger rod; the two ends of the first spring are respectively connected to the push plate and the electromagnet; the electromagnet is in a circular ring shape; the trigger rod passes through the inner hole of the electromagnet from bottom to top and then is connected to the contact.

[0011] Furthermore, a connecting seat is connected between the telescopic assembly and the sliding sleeve of the Leeb hardness tester; a third spring is sleeved on the outside of the connecting rod; and two ends of the third spring are respectively connected to the connecting seat and the connecting rod.

[0012] Furthermore, a positioning groove is provided on the connecting seat; one end of the telescopic assembly is hinged to the box; a connecting rod is hinged to the other end of the telescopic assembly; a sliding groove slidably connected to the connecting rod is provided in the positioning groove; the connecting rod is connected to a second rotating shaft after passing through the sliding groove; the second rotating shaft is pressed against a side of the connecting seat away from the telescopic assembly; the Leeb hardness tester and the telescopic assembly are not coaxially arranged.

[0013] Furthermore, the telescopic component is an electric push rod.

[0014] Furthermore, a sliding sleeve is fixed on the box body; and the rod body of the sliding rod is slidably connected to the inner hole of the sliding sleeve.

[0015] After adopting the above structure, the beneficial effects of the utility model are as follows: the automatic loading Leeb hardness measuring device described in the utility model, when using the utility model, the fixed seat and the external lifting device with a large stroke; after the product to be tested is placed below, the external lifting device drives the entire box to move downward until the support ring fits on the surface of the product to be tested; the telescopic component drives the sliding sleeve to move downward until the clamp clamps and fixes the impact body in the support ring; the telescopic component drives the sliding sleeve to rise; the clamp drives the impact body to rise to the set height; the reset switch is triggered to press the trigger button of the Leeb hardness tester, so that the clamp is released and the impact body falls for testing; the speed of the impact body's downward impact and the speed of the impact body's rise after contacting the product are obtained by connecting to the circuit of the Leeb hardness tester, and the hardness of the workpiece is obtained by analyzing the speed measured by data analysis; the structure can be connected to the lifting device and cooperate with the telescopic component and the trigger reset switch to realize the automatic measurement of the product's Leeb hardness measuring device; reduce labor intensity and improve measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional view of the utility model;

[0017] Figure 2 It is a right side cross-sectional view of the utility model;

[0018] Figure 3 It is a right view of the utility model;

[0019] Figure 4 It is the structure that connects the telescopic component and the Leeb hardness tester;

[0020] Figure 5 It is a structural diagram of triggering the reset switch;

[0021] Figure 6 It is a cross-sectional view of the Leeb hardness tester;

[0022] Description of reference numerals:

[0023] 1. Trigger reset switch; 101. Trigger rod; 101a. Push plate; 102. First spring;

[0024] 103, electromagnet; 104, contact; 2, Leeb hardness tester; 201, sliding rod;

[0025] 202, sliding sleeve; 203, trigger button; 204, clamp; 205, support ring; 206, impact body;

[0026] 3. The third spring; 4. The second rotating shaft; 5. The fixed seat; 6. The linear bearing; 7. The second spring;

[0027] 8. Linear guide shaft; 9. Box body; 10. Connecting seat; 1001. Positioning groove; 1001a. Sliding groove;

[0028] 11. Telescopic assembly; 12. First rotating shaft; 13. Connecting rod. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 6 As shown, the automatic loading Leeb hardness measuring device of the utility model comprises a Leeb hardness tester 2, a fixing seat 5 and a box 9; a supporting ring 205 of the Leeb hardness tester 2 is fixed on the box 9; a telescopic assembly 11 is arranged inside the box 9; the telescopic assembly 11 is connected to the sliding sleeve 202 of the Leeb hardness tester 2;

[0031] A trigger reset switch 1 is provided above the Leeb hardness tester 2; a linear bearing 6 is fixed on the box body 9; a linear guide shaft 8 slidably connected to the linear bearing 6 is fixed on the fixed seat 5; a second spring 7 is sleeved on the outer side of the linear guide shaft 8; both ends of the second spring 7 are connected between the box body 9 and the fixed seat 5;

[0032] The structure of the Leeb hardness tester 2 is essentially the same as that of the prior art, so it will not be described in detail;

[0033] The fixed seat 5 is in a lifting device with a large external stroke; after the product to be tested is placed below, the external lifting device drives the entire box 9 to move downward until the support ring 205 is attached to the surface of the product to be tested; the telescopic component 11 drives the sliding sleeve 202 to move downward until the clamp 204 clamps and fixes the impact body 206 in the support ring 205; the telescopic component 11 drives the sliding sleeve 202 to rise; the clamp 204 drives the impact body 206 to rise to the set height; the reset switch 1 is triggered to press the trigger button 203 of the Leeb hardness tester 2, so that the clamp 204 is released, and the impact body 206 falls for testing; the speed of the impact body 206 impacting downward and the speed of the impact body 206 rising after contacting the product are obtained by connecting to the circuit of the Leeb hardness tester 2, and the hardness of the workpiece is obtained by analyzing the speed measured by data analysis; the structure can be connected to the lifting device and cooperate with the telescopic component 11 and the trigger reset switch 1 to realize the automatic measurement of the Leeb hardness measuring device of the product; reduce labor intensity and improve measurement efficiency.

[0034] As a preferred embodiment of the present invention, the trigger reset switch 1 includes a trigger rod 101, a first spring 102 sleeved outside the trigger rod 101 and an electromagnet 103 fixed on the box body 9; a push plate 101a is fixed on the rod body of the trigger rod 101; the two ends of the first spring 102 are respectively connected to the push plate 101a and the electromagnet 103; the electromagnet 103 is in a circular ring shape; the trigger rod 101 passes through the inner hole of the electromagnet 103 from bottom to top and is connected to the contact 104; when the electromagnet 103 is powered off, the thrust of the first spring 102 on the push plate 101a causes the electric trigger rod 101 to be lifted up a distance; after the electromagnet 103 is powered on, the magnetic force of the magnet 103 generates an adsorption force on the push plate 101a, and the trigger rod 101 overcomes the elastic force of the first spring 102 and moves downward, and the contact 104 presses the trigger button 203.

[0035] As a preferred embodiment of the utility model, a connecting seat 10 is connected between the telescopic assembly 11 and the sliding sleeve 202 of the Leeb hardness tester 2; the outer sleeve of the connecting rod 13 is provided with a third spring 3; the two ends of the third spring 3 are respectively connected to the connecting seat 10 and the connecting rod 13; after the telescopic assembly 11 pushes the connecting rod 13 to move, the connecting seat 10 is pushed tightly by the third spring 3 to make the Leeb hardness tester 2 move, and the flexible pressure applied by the third spring 3 to the docking seat 10 is reduced to reduce the test noise; the telescopic assembly 11 and the connecting rod 13 are connected through the first rotating shaft 12.

[0036] As a preferred embodiment of the utility model, a positioning groove 1001 is provided on the connecting seat 10; one end of the telescopic component 11 is hinged to the box body 9; the other end of the telescopic component 11 is hinged to a connecting rod 13; a sliding groove 1001a slidably connected to the connecting rod 13 is provided in the positioning groove 1001; the connecting rod 13 is connected to a second rotating shaft 4 after passing through the sliding groove 1001a; the second rotating shaft 4 is pressed against the side of the connecting seat 10 away from the telescopic component 11; the Leeb hardness tester 2 and the telescopic component 11 are not coaxially arranged; the Leeb hardness tester 2 and the telescopic component 11 are not coaxially arranged, which can reduce the total length of the hardness measuring device and make the overall structure more compact; and the torque generated by the non-coaxial position relationship between the telescopic component 11 and the Leeb hardness tester 2 can easily cause the structure to get stuck; by adopting a hinged structure between the telescopic component 11 and the connecting rod 13, and then cooperating with the third spring 3, the Leeb hardness tester 2 is prevented from getting stuck during operation.

[0037] As a preferred embodiment of the present invention, the telescopic assembly 11 is an electric push rod.

[0038] As a preferred embodiment of the present invention, a sliding sleeve 202 is fixed on the box body 9 ; the rod body of the sliding rod 201 is slidably connected to the inner hole of the sliding sleeve 202 .

[0039] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An automatic loading Leeb hardness measuring device, characterized in that: It comprises a Leeb hardness tester (2), a fixing seat (5) and a box (9); a support ring (205) of the Leeb hardness tester (2) is fixed on the box (9); a telescopic component (11) is arranged inside the box (9); the telescopic component (11) is connected to a sliding sleeve (202) of the Leeb hardness tester (2); A trigger reset switch (1) is arranged above the Leeb hardness tester (2); a linear bearing (6) is fixed on the box (9); a linear guide shaft (8) slidably connected to the linear bearing (6) is fixed on the fixed seat (5); a second spring (7) is sleeved on the outside of the linear guide shaft (8); and two ends of the second spring (7) are connected between the box (9) and the fixed seat (5).

2. The automatic loading Leeb hardness measuring device according to claim 1, characterized in that: The trigger reset switch (1) comprises a trigger rod (101), a first spring (102) sleeved outside the trigger rod (101), and an electromagnet (103) fixed to a box (9); a push plate (101a) is fixed to the rod body of the trigger rod (101); two ends of the first spring (102) are respectively connected to the push plate (101a) and the electromagnet (103); the electromagnet (103) is in a circular ring shape; the trigger rod (101) passes through the inner hole of the electromagnet (103) from bottom to top and is connected to a contact (104).

3. The automatic loading Leeb hardness measuring device according to claim 1, characterized in that: A connecting seat (10) is connected between the telescopic assembly (11) and the sliding sleeve (202) of the Leeb hardness tester (2); a third spring (3) is sleeved on the outside of the connecting rod (13); and two ends of the third spring (3) are respectively connected to the connecting seat (10) and the connecting rod (13).

4. The automatic loading Leeb hardness measuring device according to claim 3, characterized in that: The connecting seat (10) is provided with a positioning groove (1001); one end of the telescopic assembly (11) is hinged to the box body (9); the other end of the telescopic assembly (11) is hinged to a connecting rod (13); a sliding groove (1001a) is provided in the positioning groove (1001) and is slidably connected to the connecting rod (13); the connecting rod (13) is connected to a second rotating shaft (4) after passing through the sliding groove (1001a); the second rotating shaft (4) is pressed against a side of the connecting seat (10) away from the telescopic assembly (11); and the Leeb hardness tester (2) and the telescopic assembly (11) are not coaxially arranged.

5. The automatic loading Leeb hardness measuring device according to claim 1, characterized in that: The telescopic component (11) is an electric push rod.

6. The automatic loading Leeb hardness measuring device according to claim 1, characterized in that: A sliding sleeve (202) is fixed on the box body (9); the rod body of the sliding rod (201) is slidably connected to the inner hole of the sliding sleeve (202).

Images