CN211955070U

CN211955070U - Wechsler hardness tester

Info

Publication number: CN211955070U
Application number: CN202020429862.7U
Authority: CN
Inventors: 王徐根; 王雷; 叶俊富; 倪建峰
Original assignee: Zhejiang Mingkang Project Management Co ltd
Current assignee: Zhejiang Mingkang Project Management Co ltd
Priority date: 2020-03-28
Filing date: 2020-03-28
Publication date: 2020-11-17
Anticipated expiration: 2030-03-28

Abstract

The utility model relates to a Webster sclerometer, which comprises a frame, a chopping board and an upper handle which are fixedly connected with the frame, a lower handle which is hinged on the frame, and a needle pressing component which is arranged on the frame and is positioned right above the chopping board, wherein a vertical first chute is arranged on one surface of the frame facing the chopping board, and a sliding block which is fixedly connected with the chopping board is tightly and slidably attached in the first chute; the frame is provided with a driving mechanism for driving the sliding block to slide up and down along the first sliding groove, the driving mechanism comprises a threaded rod which is rotatably connected in the first sliding groove and has the same length direction with the first sliding groove, and the threaded rod penetrates through the sliding block and is in threaded fit with the sliding block; the drive mechanism also includes a knob fixedly connected to one end of the threaded rod. The distance between the chopping block and the needle pressing component can be adjusted according to the thickness of the metal section bar, and the using effect of the Vickers hardness tester is effectively improved.

Description

Wechsler hardness tester

Technical Field

The utility model belongs to the technical field of the technique that metal section detected and specifically relates to a wechsler sclerometer is related to.

Background

The Vickers hardness tester can be used for checking whether the workpiece has the non-heat treatment and heat treatment effects and judging whether the mechanical property of the workpiece is qualified or not; the device is used for determining whether the workpiece is machined by an unsuitable alloy or not and indirectly judging whether the alloy components of the material are qualified or not; the Vickers hardness qualified value of a certain product can be determined by performing a comparison test on a Vickers hardness tester, a desk type hardness tester and a tensile testing machine, and the value can be used for carrying out process control on the product on a production line and also can be used as the basis for factory qualification inspection and acceptance inspection of the product.

If the publication number is CN 205192896U's patent, this patent provides a wechsler sclerometer, including the support body, the application of force pole, connecting screw, the gauge outfit, adjusting screw, load spring, the tucking, the reset key, reset spring, riveting piece and elasticity stretching strap, wherein the support body includes the tucking sleeve, the chopping block, recess I and spacing groove, the tucking sleeve is located the front end upper portion position of support body, the chopping block is located the front end lower part position of support body, wherein be equipped with arc recess and through-hole on the chopping block, the tucking is assembled in the middle of the tucking sleeve, adjusting screw assembles the top at the tucking, assemble the gauge outfit on it, the front end afterburning part of application of force pole assembles in the top of gauge outfit, be equipped with recess II on the application of force pole, the both ends of elasticity stretching strap assemble respectively in the inboard of.

Although the service life of the Vickers hardness tester is prolonged, the cutting board is fixed, so that the distance between the cutting board and the pressing pin cannot be properly adjusted according to the thickness of the metal section bar, and the use effect of the Vickers hardness tester is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wechsler sclerometer can adjust the distance between chopping block and the tucking subassembly according to metal section's thickness, has effectively improved the result of use of wechsler sclerometer.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a Vickers hardness tester comprises a frame, a chopping board and an upper handle which are fixedly connected with the frame, a lower handle which is hinged on the frame, and a needle pressing component which is arranged on the frame and is positioned right above the chopping board, wherein a vertical first chute is arranged on one surface of the frame facing the chopping board, and a sliding block which is fixedly connected with the chopping board is tightly attached in the first chute in a sliding way; the frame is provided with a driving mechanism for driving the sliding block to slide up and down along the first sliding groove, the driving mechanism comprises a threaded rod which is rotatably connected in the first sliding groove and has the same length direction with the first sliding groove, and the threaded rod penetrates through the sliding block and is in threaded fit with the sliding block; the drive mechanism also includes a knob fixedly connected to one end of the threaded rod.

Through adopting above-mentioned technical scheme, when the distance between chopping block and the tucking subassembly is adjusted to needs, the operator passes through the knob rotatory threaded rod, and under the screw thread effect of threaded rod, the slider will take place to remove from top to bottom along first spout, and the chopping block just can be along with the slider takes place to remove from top to bottom in step, and the distance between chopping block and the tucking subassembly can be adjusted to make the wechsler sclerometer can adapt to the metal section bar of different thickness specifications better. Compared with the prior art, the cutting board and the needle pressing assembly can be adjusted according to the thickness of the metal section, and the using effect of the Vickers hardness tester is effectively improved.

The utility model discloses further set up to: a second sliding groove communicated with the threaded rod is formed in the sliding block, and a butting block meshed with the threaded rod is tightly attached to the second sliding groove in a sliding manner; a spring for driving the abutting block to abut against the threaded rod is arranged in the second sliding groove; and a separation assembly for driving the abutting block to separate from the threaded rod is further arranged on the sliding block.

Through adopting above-mentioned technical scheme, when needs move the chopping block by a wide margin and fast, the operator orders about the butt piece through breaking away from the subassembly and breaks away from the threaded rod, and the slider will no longer receive the restraint of threaded rod, and slider and chopping block alright slide on the frame from top to bottom freely. After the chopping block slides to a proper position, the operator cancels the effect of the disengaging component to enable the abutting block to be tightly abutted on the threaded rod again. The arrangement of the second sliding groove, the abutting block, the spring and the separating component is beneficial to improving the flexibility and the practicability of the Vickers hardness tester in use, and an operator can conveniently adjust the distance between the chopping block and the needle pressing component.

The utility model discloses further set up to: the separation assembly comprises a pull rod which is connected to the sliding block in a sliding mode and used for pulling the abutting block to separate from the threaded rod, and a pull ring which is arranged on one end, far away from the abutting block, of the pull rod.

Through adopting above-mentioned technical scheme, the operator comes the pulling rod through the pull ring, and the pull rod just can order about butt piece compression spring and break away from the threaded rod, and the position restraint relation between butt piece and the threaded rod just can be cancelled, and slider and chopping block can freely take place to remove from the ground, and the theory of structure that breaks away from the subassembly is simple, has made things convenient for operator's operation greatly.

The utility model discloses further set up to: and a dial gauge for displaying the distance between the chopping block and the needle pressing assembly is arranged on the frame.

Through adopting above-mentioned technical scheme, the operator can clearly know the chopping block and the distance between the tucking subassembly through the graduation apparatus, and the graduation apparatus provides the reference for the operator removes the chopping block, makes the operator can adjust the chopping block and the distance between the tucking subassembly fast and accurately, has improved the accuracy nature of adjustment greatly.

The utility model discloses further set up to: a third sliding groove with a convex section is vertically formed in one surface of the frame facing the chopping board, and a sliding rod is embedded in the third sliding groove in a sliding manner; the lower surface of the chopping board is hinged with a reinforcing rod fixedly connected with the sliding rod; the frame is provided with a locking mechanism for abutting and positioning the sliding rod.

Through adopting above-mentioned technical scheme, when the relative frame of chopping block takes place to reciprocate, the stiffener can be along with the chopping block together reciprocates, the slide bar then can take place to remove from top to bottom in the third spout under the drive of stiffener, when the chopping block with press the distance adjustment between the needle subassembly to when suitable, the operator locks the position of slide bar through locking mechanical system again, the stiffener just can support the chopping block, improved the structural strength between chopping block and the frame. When the chopping block needs to be slid again, an operator only needs to cancel the locking of the locking mechanism to the position of the sliding rod.

The utility model discloses further set up to: one end of the sliding rod penetrates through the side wall of the frame; the locking mechanism comprises a through hole vertically formed in the side wall of the frame and used for enabling the end part of the sliding rod to slide up and down, a thread groove formed in the side wall of the sliding rod, and a nut which is sleeved on the thread groove and used for tightly abutting against the side wall of the frame in a threaded manner.

Through adopting above-mentioned technical scheme, after the distance adjustment between chopping block and the tucking subassembly is suitable, the operator screws up the nut on the thread groove to make the nut support tightly on the lateral wall of frame, the slide bar just can be locked on the frame, and the stiffener can play the supporting role to the chopping block, and locking mechanical system's structural principle is simple, and it is very convenient in the operation. If the sliding rod slides up and down again, an operator can unscrew the nut on the thread groove, and the operation is very convenient.

The utility model discloses further set up to: and a gasket for increasing the contact area of the nut and the side wall of the frame is arranged between the nut and the side wall of the frame.

Through adopting above-mentioned technical scheme, the gasket has increased the area of contact between nut and the frame lateral wall, has increased the frictional force between nut and the frame lateral wall, has effectively reduced the probability that the slide bar takes place to rock, has guaranteed the stability of stiffener.

To sum up, the utility model discloses a beneficial technological effect does:

1. the arrangement of the first sliding chute, the sliding block and the driving mechanism enables the device to adjust the distance between the chopping board and the needle pressing assembly according to the thickness of the metal section bar, so that the use effect of the Vickers hardness tester is effectively improved;

2. the arrangement of the second sliding chute, the abutting block, the spring and the disengaging component is beneficial to improving the flexibility and the practicability of the Vickers hardness tester during use, and is convenient for an operator to adjust the distance between the cutting board and the needle pressing component;

3. the arrangement of the dial gauge enables an operator to quickly and accurately adjust the distance between the chopping board and the needle pressing assembly;

4. the third sliding groove, the sliding rod, the reinforcing rod and the locking mechanism are arranged, so that the structural strength between the chopping board and the frame is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the present invention in a partial sectional structure.

In the figure, 1, frame; 2. an upper handle; 3. a chopping board; 4. a needle pressing assembly; 5. a lower handle; 6. a first chute; 7. a slider; 8. a threaded rod; 9. a knob; 10. a dial gauge; 11. a second chute; 12. a butting block; 13. a spring; 14. a pull rod; 15. a pull ring; 16. a third chute; 17. a slide bar; 18. a reinforcing bar; 19. a through hole; 20. a thread groove; 21. a nut; 22. and (7) a gasket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the wechsler durometer comprises a frame 1, an upper handle 2 fixedly connected to one side of the frame 1, an anvil 3 fixedly connected to the other side of the frame 1, a needle pressing assembly 4 installed on the frame 1 and located right above the anvil 3, and a lower handle 5 hinged to the frame 1 for driving the needle pressing assembly 4 to move integrally to the anvil 3. The needle pressing component 4 comprises a pressing needle, a load spring, an adjusting nut, a needle pressing sleeve, a reset key, a reset spring, a gauge head and the like. When a sample is placed on the chopping board 3, an operator presses the pressing handle 5, the pressing needle assembly 4 moves towards the sample, the tip of the pressing needle is firstly contacted with the sample, the operator continuously presses the lower handle 5, a part of the pressing needle penetrates into the sample, and then the hardness of the material is determined according to the pressing depth of the pressing needle, wherein the pressing depth of 0.01mm is defined as a Vickers hardness unit. It should be noted that the needle pressing assembly 4 in the wechsler hardness tester is a common structure on the market, and therefore the internal structure of the needle pressing assembly is not described in detail in this application.

Referring to fig. 1 and 2, a vertical first sliding groove 6 is formed on a surface of the frame 1 facing the chopping board 3, a sliding block 7 is tightly attached to the first sliding groove 6 in a sliding manner, and the sliding block 7 is fixedly connected with the chopping board 3. A threaded rod 8 is rotatably connected in the first sliding groove 6, the length direction of the threaded rod 8 is consistent with that of the first sliding groove 6, and the threaded rod 8 penetrates through the sliding block 7 and is in threaded fit with the sliding block 7. The lower end of the threaded rod 8 penetrates out of the frame 1 and is fixedly connected with a knob 9. The threaded rod 8 and the knob 9 form a driving mechanism for driving the sliding block 7 to slide up and down. When the distance between chopping block 3 and the tucking subassembly 4 is adjusted to needs, the operator comes rotatory threaded rod 8 through knob 9, and under the effect of screw thread, slider 7 can take place to remove from top to bottom along first spout 6, and chopping block 3 will be along with slider 7 takes place to remove from top to bottom in step, and chopping block 3 can change with the distance between the tucking subassembly 4 to adapt to the metal section bar of different thickness specifications.

In order to enable an operator to quickly and accurately adjust the distance between the cutting board 3 and the needle pressing assembly 4, a scale 10 for displaying the distance between the cutting board 3 and the needle pressing assembly 4 is arranged on the frame 1, and the scale 10 can provide reference for the operator to adjust the distance between the cutting board 3 and the needle pressing assembly 4.

Referring to fig. 2, the sliding block 7 is provided with a second sliding groove 11 communicated with the threaded rod 8, a butting block 12 is tightly attached to the second sliding groove 11 in a sliding manner, and one surface, close to the threaded rod 8, of the butting block 12 can be embedded into the threads of the threaded rod 8 and meshed with the threaded rod 8. A spring 13 is fixedly connected between the groove bottom of the second sliding groove 11 and the abutting block 12, when the spring 13 is in a natural state, the spring 13 abuts against the abutting block 12 on the threaded rod 8, and when the spring 13 is in a contraction state, the abutting block 12 retracts into the second sliding groove 11 and is separated from the threaded rod 8. A pull rod 14 is arranged on the sliding block 7, one end of the pull rod 14 extends into the second sliding groove 11 and is fixedly connected with the abutting block 12, and the other end of the pull rod 14 penetrates through the side wall of the sliding block 7 and is fixedly connected with a pull ring 15. Wherein the pull rod 14 and the pull ring 15 constitute a disengagement assembly for urging the abutment block 12 out of the threaded rod 8. An operator pulls the pull rod 14 to enable the abutting block 12 to retract into the second sliding groove 11, the meshing relation between the abutting block 12 and the threaded rod 8 is cancelled, the spring 13 is compressed, the sliding block 7 and the chopping block 3 can freely slide up and down on the frame 1, the distance between the chopping block 3 and the pressing needle assembly 4 (shown in figure 1) can be greatly adjusted, and the flexibility and the practicability of the Vickers hardness tester in use are greatly improved.

Referring to fig. 2, a vertical third sliding groove 16 is further formed in a surface of the frame 1 facing the chopping block 3, the cross section of the third sliding groove 16 is convex, a sliding rod 17 with a circular cross section is slidably embedded in the third sliding groove 16, and the sliding rod 17 is entirely horizontal. The lower surface of the chopping board 3 is hinged with a reinforcing rod 18, the rotation axis of the reinforcing rod 18 is parallel to the axis of the sliding rod 17, and one end of the reinforcing rod 18 far away from the chopping board 3 is fixedly connected with the sliding rod 17. One end of the sliding rod 17 far away from the first sliding chute 6 penetrates through the side wall of the frame 1, and a through hole 19 for the end part of the sliding rod 17 to slide up and down is vertically formed in the frame 1. The side wall of one end of the sliding rod 17 penetrating through the through hole 19 is provided with a thread groove 20, and a nut 21 for tightly abutting against the side wall of the frame 1 is sleeved on the thread groove 20 in a threaded manner. The sliding rod 17 is also slidably sleeved with a gasket 22 for increasing the contact area between the nut 21 and the side wall of the frame 1. Wherein the through hole 19, the threaded groove 20 and the nut 21 constitute a locking mechanism for locking the position of the slide rod 17. When the chopping board 3 takes place to remove relative frame 1, stiffener 18 and slide bar 17 can be along with the chopping board 3 together takes place to remove from top to bottom, and back on the chopping board 3 slides to suitable position, the operator screws up nut 21 on the thread groove 20 to make nut 21 support tightly on the lateral wall of frame 1, slide bar 17 just can be locked on frame 1, and stiffener 18 can play the supporting role to chopping board 3, has improved the structural strength between chopping board 3 and the frame 1. To re-slide the anvil 3, the operator unscrews the nut 21.

The implementation principle of the embodiment is as follows: when the distance between chopping block 3 and the tucking subassembly 4 is adjusted to needs, the operator comes rotatory threaded rod 8 through knob 9, and under the effect of screw thread, slider 7 can take place to remove from top to bottom along first spout 6, and chopping block 3 will be along with slider 7 takes place to remove from top to bottom in step, and chopping block 3 can change with the distance between the tucking subassembly 4 to adapt to the metal section bar of different thickness specifications. In addition, the operator can pull the pull rod 14 to retract the abutting block 12 into the second sliding groove 11, the meshing relation between the abutting block 12 and the threaded rod 8 is cancelled, the spring 13 is compressed, the sliding block 7 and the anvil plate 3 can freely slide up and down on the frame 1, and the distance between the anvil plate 3 and the needle pressing assembly 4 can be greatly adjusted.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a wechsler sclerometer, includes frame (1), chopping block (3) and last handle (2) of fixed connection on frame (1), articulates lower handle (5) on frame (1) to and set up on frame (1) and be located push pin subassembly (4) directly over chopping block (3), its characterized in that: a vertical first chute (6) is arranged on one surface of the frame (1) facing the chopping board (3), and a sliding block (7) fixedly connected with the chopping board (3) is tightly attached in the first chute (6) in a sliding way; a driving mechanism for driving the sliding block (7) to slide up and down along the first sliding groove (6) is arranged on the frame (1), the driving mechanism comprises a threaded rod (8) which is rotatably connected in the first sliding groove (6) and has the same length direction with the first sliding groove (6), and the threaded rod (8) penetrates through the sliding block (7) and is in threaded fit with the sliding block (7); the driving mechanism also comprises a knob (9) fixedly connected with one end of the threaded rod (8).

2. A wechsler durometer as in claim 1 wherein: a second sliding chute (11) communicated with the threaded rod (8) is formed in the sliding block (7), and a butting block (12) meshed with the threaded rod (8) is tightly attached to the second sliding chute (11) in a sliding manner; a spring (13) for driving the abutting block (12) to abut against the threaded rod (8) is arranged in the second sliding chute (11); the sliding block (7) is also provided with a separation component which drives the abutting block (12) to separate from the threaded rod (8).

3. A wechsler durometer as in claim 2 wherein: the disengaging assembly comprises a pull rod (14) which is connected to the sliding block (7) in a sliding mode and used for pulling the abutting block (12) to disengage from the threaded rod (8), and a pull ring (15) which is arranged at one end, far away from the abutting block (12), of the pull rod (14).

4. A wechsler durometer as in claim 1 wherein: and a dial gauge (10) for displaying the distance between the chopping board (3) and the needle pressing assembly (4) is arranged on the frame (1).

5. A wechsler durometer as in claim 1 wherein: a third sliding groove (16) with a convex section is vertically formed in one surface, facing the chopping board (3), of the frame (1), and a sliding rod (17) is embedded in the third sliding groove (16) in a sliding manner; the lower surface of the cutting board (3) is hinged with a reinforcing rod (18) fixedly connected with the sliding rod (17); the frame (1) is provided with a locking mechanism for abutting and positioning the sliding rod (17).

6. The wechsler durometer of claim 5, wherein: one end of the sliding rod (17) penetrates through the side wall of the frame (1); the locking mechanism comprises a through hole (19) vertically formed in the side wall of the frame (1) and used for enabling the end of the sliding rod (17) to slide up and down, a thread groove (20) formed in the side wall of the sliding rod (17), and a nut (21) which is sleeved on the thread groove (20) in a threaded mode and used for tightly abutting against the side wall of the frame (1).

7. The wechsler durometer of claim 6, wherein: and a gasket (22) for increasing the contact area of the nut (21) and the side wall of the frame (1) is arranged between the nut and the side wall of the frame.