CN219915239U - Gold hardness detection device - Google Patents

Abstract

The utility model relates to a gold hardness detection device, which comprises a base and a clamping mechanism arranged on the base, wherein a gear box is fixed on the base through two vertical rods, a first rotating shaft and a second rotating shaft are installed in the gear box in a vertical rotating mode, a driven large gear and a rack gear are sequentially fixed on the first rotating shaft, a driving pinion and a ratchet wheel are sequentially fixed on the second rotating shaft, a crank is arranged at one end of the second rotating shaft outside the gear box, a pawl mechanism matched with the ratchet wheel is installed above the ratchet wheel in the gear box, an operation port is formed in the gear box corresponding to the pawl mechanism, a rack rod meshed with the driving pinion is further vertically arranged in the gear box, the lower end of the rack rod penetrates through the gear box and is fixedly provided with a detection head outside the gear box, and a microscope is connected between the two vertical rods through a connecting rod below the gear box. According to the utility model, the gold block is clamped by the telescopic matching clamping mechanism of the crank control detection head, so that hardness detection can be conveniently realized, operation is convenient, and the structure is simple.

Description

Gold hardness detection device

Technical Field

The utility model relates to the technical field of gold detection equipment, in particular to a gold hardness detection device.

Background

At present, an electric control device is adopted to operate a detection head and gold contact in a gold hardness detection device, such as a gold hardness detection device disclosed by CN 211148270U, a motor is adopted to drive a screw rod to drive a sliding frame so that the detection head and gold are propped against for detection, equipment needs to be electrified for use, a detection task cannot be completed when no power supply exists, and certain limitation exists in use.

Moreover, the clamping mechanism on the base in the prior art is used for clamping gold by adopting a bolt structure and is mutually close to the gold, so that the clamping adjustment is more troublesome when the gold is clamped, time and labor are wasted, the detection efficiency is low, the clamping stability is not high, the detection head and the gold are easily unstable in contact, and the detection effect is disturbed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the gold hardness detection device which can manually control the detection head in the gear box to stretch out and draw back and get rid of the electric constraint, is convenient for clamping gold by the clamping mechanism, has simple operation, simple overall structure and stable function, is convenient for operation in the whole detection process, is beneficial to improving the detection efficiency and has wide application range.

The utility model is realized by the following technical scheme:

the utility model provides a gold hardness detection device, including the base with set up the fixture on the base, be fixed with the gear box through the biperism pole on the base, first pivot and second pivot are installed in the gear box upper and lower rotation, be fixed with driven gear and rack gear in proper order in the first pivot, be fixed with drive pinion and ratchet in proper order in the second pivot, and the one end of second pivot is provided with the crank outside the gear box, install in the gear box with ratchet complex pawl mechanism above the ratchet, and the gear box corresponds pawl mechanism and seted up the operation mouth, still vertical be provided with in the gear box with drive pinion engaged rack bar, the lower extreme of rack bar runs through the gear box and is fixed with the detection head outside the gear box, be connected with the microscope through the connecting rod between the biperism pole in the gear box below.

Further, fixture is including fixing the detection platform on the base, detects the platform and is equipped with the facade of laminating with the gold piece, still is equipped with the extrusion piece just right with the facade on detecting the bench, forms the centre gripping space that is used for fixing a position the gold piece between extrusion piece and the facade, and the eccentric wheel is installed through the fixed axle rotation to one side of extrusion piece back to the facade, and the peripheral face spiral of eccentric wheel is provided with the pressure strip that is used for the extrusion piece, is connected with the handle on the eccentric wheel.

The facade on the detection platform and the extrusion piece can mutually support, and the extrusion piece application of force is pressed to the pressure strip when utilizing the eccentric wheel to rotate for the extrusion piece removes to the facade and then carries out stable centre gripping to the gold piece of placing in the centre gripping space, convenient operation.

Furthermore, the detection table is provided with a limit column at one side of the extrusion block.

Through setting up spacing post in one side of extrusion piece, can transversely spacing the extrusion piece for cooperate with eccentric wheel and pressure strip all the time.

Further, the pawl mechanism comprises a pawl, an elastic piece, a deflector rod and a mounting rod, wherein the mounting rod comprises a first fixing rod and a second fixing rod which are arranged on two sides above the second rotating shaft and are parallel to the second rotating shaft, the pawl is connected with the deflector rod through a lantern ring and is rotationally sleeved on the first fixing rod, one end of the elastic piece is connected to the second fixing rod, and the other end of the elastic piece is abutted to the pawl.

The pawl of the pawl mechanism can be inserted into the ratchet wheel to lock and limit the whole body, so that the vertical displacement of the rack bar after the crank is stopped is prevented, the use stability is ensured, the position of the pawl can be controlled by controlling the deflector rod, and the crank can rotate positively and negatively as required.

The utility model has the beneficial effects that:

the detection personnel control the detection head to stretch out and draw back and contradict with the golden block of detecting the centre gripping on the bench and carry out hardness detection through rotating the crank, cooperation microscope observes the detection face, set up pawl mechanism in the gear box, can realize the auto-lock after stopping the crank, prevent to detect the head displacement, guarantee the stability that detects, pawl mechanism can cooperate the driving lever simultaneously and realize the unblock, make things convenient for the rack bar to drive the detection head to withdraw in the gear box, whole convenient operation has broken away from the electric power constraint, and applicable scene is extensive, and pure mechanical structure stability is high. The detection platform on the base is through fixture, utilizes the pressure strip cooperation extrusion piece on the eccentric wheel to compress tightly gold and fixes in the centre gripping space between extrusion piece and facade, realizes the stable centre gripping to the gold piece, and whole centre gripping operation only needs manual rotation handle certain angle can accomplish the centre gripping by one step, convenient operation, and the structure is succinct, and the centre gripping stability is high, has promoted hardness detection efficiency.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic structural view of a clamping mechanism in the present utility model.

Fig. 3 is a schematic view of the detent mechanism of the present utility model.

The figure shows:

1. the device comprises a base, 2, a clamping mechanism, 3, a vertical rod, 4, a gear box, 5, a crank, 6, a second rotating shaft, 7, a first rotating shaft, 8, a ratchet wheel, 9, a driving pinion, 10, a rack bar, 11, a rack gear, 12, a driven large gear, 13, a detection head, 14, a microscope, 15, a handle, 16, an eccentric wheel, 17, a detection table, 18, a fixed shaft, 19, a squeezing block, 20, a vertical surface, 21, a limit column, 22, a first fixed rod, 23, a second fixed rod, 24, a pawl, 25, a spring plate, 26, a deflector rod, 27, a lantern ring, 28 and a pressure bar.

Detailed Description

In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.

The utility model provides a gold hardness detection device, includes base 1 and fixture 2 of setting on base 1, wherein: the clamping mechanism 2 comprises a detection table 17 fixed on the base 1, the detection table 17 is provided with a vertical face 20 attached to the gold block, the detection table 17 is also provided with an extrusion block 19 opposite to the vertical face 20, and the detection table 17 is provided with a limit column 21 on one side of the extrusion block 19.

A clamping space for positioning the gold block is formed between the extrusion block 19 and the vertical face 20, one side of the extrusion block 19 opposite to the vertical face 20 is rotatably provided with an eccentric wheel 16 through a fixed shaft 18, the peripheral surface of the eccentric wheel 16 is spirally provided with a pressure strip 27 for extruding the extrusion block 19, and the eccentric wheel 16 is connected with a handle 15.

The base 1 is fixedly provided with a gear box 4 through two vertical rods 3, a first rotating shaft 7 and a second rotating shaft 6 are installed in the gear box 4 in a vertical rotating mode, a driven large gear 12 and a rack gear 11 are sequentially fixed on the first rotating shaft 7, a driving pinion 9 and a ratchet wheel 8 are sequentially fixed on the second rotating shaft 6, one end of the second rotating shaft 6 is provided with a crank 5 outside the gear box 4, a pawl mechanism matched with the ratchet wheel 8 is installed above the ratchet wheel 8 in the gear box 4, an operation opening is formed in the gear box 4 corresponding to the pawl mechanism, a rack bar 10 meshed with the driving pinion 11 is further vertically arranged in the gear box 4, the lower end of the rack bar 10 penetrates through the gear box 4 and is fixedly provided with a detection head 13 outside the gear box 4, and a microscope 14 is connected between the two vertical bars 3 below the gear box 4 through a connecting rod.

In the utility model, the pawl mechanism comprises a pawl 24, an elastic piece 25, a deflector rod 26 and a mounting rod, wherein the mounting rod comprises a first fixing rod 22 and a second fixing rod 23 which are arranged on two sides above the second rotating shaft 6 and are parallel to the second rotating shaft 6, the pawl 24 and the deflector rod 26 are connected through a lantern ring 27 and are rotatably sleeved on the first fixing rod 22, one end of the elastic piece 25 is connected to the second fixing rod 23, and the other end of the elastic piece 25 is abutted to the pawl 24. The spring plate 25 has two states (bending and straight), and can be propped against the pawl 24 when bending, so as to keep a certain elastic force on the pawl 24, and no acting force is generated on the pawl 24 when straight, so that the pawl 24 is positioned above the ratchet wheel 8. When the ratchet wheel 8 rotates positively, the elastic sheet 25 keeps a bending state and always abuts against the pawl 24, the pawl 24 contacts with the ratchet wheel 8 but does not affect the rotation of the ratchet wheel 8, and after the crank 5 stops rotating, the pawl 24 is pressed into a tooth slot of the ratchet wheel 8 by the elastic sheet 25 to realize self-locking of the ratchet wheel 8; when the ratchet 8 rotates reversely, the pawl 24 can be lifted up by pressing the deflector rod 26, at the moment, the pawl 24 presses the elastic sheet 25 to deform, the elastic sheet 25 is restored to a straight state, the pawl 24 is limited above the ratchet 8, and at the moment, the pawl 24 is separated from the ratchet 8, so that the reverse rotation of the ratchet 8 is not influenced.

The working process of the utility model comprises the following steps:

firstly, gold blocks to be detected are placed on a detection table 17, a pressing bar 28 is driven to apply force to an extrusion block 19 by rotating a handle 15, the extrusion block 19 is close to the gold blocks located in a clamping space to be clamped to the vertical surface of the detection table 17, a crank 5 on a gear box 4 is manually rotated at the moment, a driving pinion 9 is driven to rotate by rotating a second rotating shaft 6, the driving pinion 9 drives a driven large gear 12 to rotate, the driven large gear 12 drives a rack gear 11 to rotate, the rack gear 11 can drive a rack bar 10 to vertically move, the rack bar 10 is enabled to downwards extend out of the gear box 4 and is supported against the gold blocks on the detection table 17 by a detection head 13 arranged at the lower end of the rack bar to be detected, and the stress condition of the gold surface can be observed through a microscope 14 arranged on a connecting rod. Due to the fact that the pawl mechanism is arranged, when the crank 5 rotates forwards, namely, the rack bar 10 is driven to move downwards, the pawl 24 is scratched on the surface of the ratchet wheel 8 and is not clamped with the ratchet wheel 8, the whole rotation is not affected, after the force application of the crank 5 is stopped, the pawl 24 falls into a tooth groove of the ratchet wheel 8, the ratchet wheel 8 is locked, the whole gear box 4 is further locked, the rack bar 10 and the connected detection head 13 are fixed in position, and an observer can vacate two hands to operate the microscope 14 to observe the gold surface. After the observation is finished, the pawl 24 is lifted by manually operating the deflector rod 26, the pawl 24 is matched with the elastic sheet 25 to be kept above the ratchet wheel 8, the crank 5 is reversely rocked in the direction, the detection head 13 is retracted into the gear box 4, then the handle 15 is reversely rotated to loosen the extrusion block 19, the extrusion block 19 is separated from the vertical face 20, and the detected gold block can be conveniently taken out to complete the detection task.

Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.

Claims (4)

1. The utility model provides a gold hardness detection device, includes base and the fixture of setting on the base, its characterized in that: the base is fixed with the gear box through two vertical bars, first pivot and second pivot are installed in the gear box in the rotation from top to bottom, be fixed with driven gear and rack gear in proper order in the first pivot, be fixed with drive pinion and ratchet in proper order in the second pivot, and the one end of second pivot is provided with the crank outside the gear box, install with ratchet complex pawl mechanism in the gear box above the ratchet, and the gear box corresponds pawl mechanism and seted up the operation mouth, still vertical being provided with in the gear box with drive pinion engaged rack bar, the lower extreme of rack bar runs through the gear box and is fixed with the detection head outside the gear box, be connected with the microscope through the connecting rod below the gear box between two vertical bars.

2. The gold hardness testing device of claim 1, wherein: the clamping mechanism comprises a detection table fixed on the base, the detection table is provided with a vertical face attached to the gold block, the detection table is also provided with an extrusion block opposite to the vertical face, a clamping space for positioning the gold block is formed between the extrusion block and the vertical face, one side of the extrusion block opposite to the vertical face is rotationally provided with an eccentric wheel through a fixing shaft, the peripheral surface of the eccentric wheel is spirally provided with a pressure bar for extruding the extrusion block, and the eccentric wheel is connected with a handle.

3. The gold hardness testing device of claim 2, wherein: the detection platform is provided with a limit column at one side of the extrusion block.

4. The gold hardness testing device of claim 1, wherein: the pawl mechanism comprises a pawl, an elastic piece, a deflector rod and a mounting rod, wherein the mounting rod comprises a first fixing rod and a second fixing rod which are arranged on two sides above the second rotating shaft and are parallel to the second rotating shaft, the deflector rod is connected with the first fixing rod through a lantern ring and is rotationally sleeved on the first fixing rod, one end of the elastic piece is connected to the second fixing rod, and the other end of the elastic piece is abutted to the pawl.