CN212155613U

CN212155613U - Hydraulic buffer for standard metal measuring device

Info

Publication number: CN212155613U
Application number: CN202020475450.7U
Authority: CN
Inventors: 林洋; 于胜强; 海宁; 靳文哲; 赵艳玲; 宫福辰; 任颖; 马春歌; 李永杰; 马军峰; 王宝成
Original assignee: Kaifeng Instrument Co ltd; National Institute of Metrology
Current assignee: Kaifeng Instrument Co ltd; National Institute of Metrology
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-12-15
Anticipated expiration: 2030-04-03

Abstract

The utility model relates to a hydraulic buffer for standard metal measuring gauge, which comprises a housing, the housing in be provided with the hydro-cylinder, be provided with first piston in the hydro-cylinder, the telescopic link is equipped with on first piston and the hydro-cylinder cover, be provided with the oil circuit circulating device on the hydro-cylinder, the oil circuit circulating device include oil-out, oil inlet and oil return pipeline, oil-out and oil inlet are linked together through oil return pipeline, be provided with the oil return stop valve on the oil return pipeline; the top of telescopic link is provided with the impact head, and the bottom of telescopic link is provided with the second piston, and the below of second piston is provided with the third piston, and the outside of third piston and second piston is provided with spacing pipe, is provided with reset spring between second piston and the third piston. The product solves the technical problem that the oil return speed of the conventional hydraulic buffer is not adjustable, and improves the application range of the hydraulic buffer. The utility model discloses adjust, convenient to use, have extensive market prospect.

Description

Hydraulic buffer for standard metal measuring device

Technical Field

The utility model relates to a buffer field, concretely relates to hydraulic buffer for standard metal measuring vessel.

Background

The technical scheme includes that a part of large standard measuring device is designed to be convenient to maintain, an upper split body and a lower split body which are composed of an upper measuring device part and a lower measuring device part are usually adopted, after the standard measuring device is used, the upper measuring device part and the lower measuring device part are usually separated and are respectively maintained, the upper measuring device part and the lower measuring device part are connected together during installation, and hydraulic buffers are usually additionally arranged on the upper measuring device part and the lower measuring device part in the prior art so as to prevent the upper measuring device part and the lower measuring device part from being directly collided to cause instrument damage; secondly, because the weight of the upper part of the measuring device is overlarge, a hydraulic buffer can provide enough reaction time for an operator to avoid accidental injury; the hydraulic buffer is superior to spring and friction buffer modes, and can not only absorb huge impact energy, but also design buffer rule according to requirement, and work is stable and reliable. At present, on a high-speed automatic production line, the hydraulic buffer is widely applied to engineering machinery transportation vehicles, light industry and textile machinery, and can increase output, prolong the service life, optimize work and reduce noise.

After the standard measuring device is shaped, manufacturers usually produce various specifications, and the weight difference of parts at the upper part of the measuring device in the standard measuring device adopting a split type design is overlarge due to the inconsistent specifications, in the process of using the conventional hydraulic buffer, the oil circuit part of the conventional hydraulic buffer is fixed after the conventional hydraulic buffer is produced, and if the conventional hydraulic buffer is applied to a pressed object with light weight, the hydraulic buffer equipment usually needs to wait for a long time to completely buffer the object; if the weight of the pressed article is heavy, the buffering time may be too short, and the buffering effect is not sufficient, so that the application range of the conventional hydraulic buffer is limited, and the popularization is not strong.

Disclosure of Invention

To the not enough of prior art, the utility model provides a hydraulic buffer that is used for standard metal measuring vessel that oil return speed can be adjusted for overcome defect among the prior art.

The utility model adopts the technical proposal that: a hydraulic buffer for a standard metal measuring device comprises a shell, wherein an oil cylinder is arranged in the shell, a first piston is arranged in the oil cylinder, telescopic rods are sleeved on the first piston and the oil cylinder, an oil path circulating device is arranged on the oil cylinder, the oil path circulating device comprises an oil outlet, an oil inlet and an oil return pipeline, the oil outlet is communicated with the oil inlet through the oil return pipeline, and an oil return stop valve is arranged on the oil return pipeline; the top of telescopic link is provided with the impact head, and the bottom of telescopic link is provided with the second piston, and the below of second piston is provided with the third piston, and the outside of third piston and second piston is provided with spacing pipe, is provided with reset spring between second piston and the third piston.

Preferably, the below of spacing pipe be provided with elasticity adjusting device, elasticity adjusting device include shrouding down, the lower shrouding has been seted up the nut along the downward top surface of shrouding of the bottom surface of lower shrouding and has been held the groove, the lower shrouding has been seted up the spacing ring along the downward bottom surface of shrouding of the downward top surface of lower shrouding and has been held the groove, the spacing ring holds the groove and the nut holds the groove and communicates mutually, the nut holds the inslot and is provided with adjusting nut, the spacing ring holds the inslot and is provided with first spacing ring, first spacing ring and adjusting nut fixed connection, the cover is equipped with elasticity adjusting screw on first spacing ring and the adjusting nut, elasticity adjusting screw and adjusting nut threaded connection, the fixed bottom of adorning at.

Preferably, the hydro-cylinder top be provided with the spacing piece of elasticity, the spacing piece of elasticity adopts arc elasticity lamellar structure, spacing piece mounting groove has been seted up on the inner wall of hydro-cylinder, spacing piece mounting groove and the spacing piece swing joint of elasticity, be provided with the shrouding on the telescopic link between spacing piece of elasticity and the hydro-cylinder, be provided with first sealing washer on the telescopic link of going up shrouding and hydro-cylinder, the bottom surface of first sealing washer and the top surface fixed connection of hydro-cylinder, be provided with the second sealing washer on the telescopic link between hydro-cylinder and the second piston, the top surface of second sealing washer and the bottom surface fixed connection of hydro-.

Preferably, the bottom of second piston and the top of third piston equally divide and do not adopt cylindrical structure, the bottom of second piston and the top of third piston equally divide and do not fix the suit reset spring on, equally divide on the top of second piston and the bottom of third piston and do not be provided with the second spacing ring, the second spacing ring suit is in spacing intraductal, the lateral wall of second spacing ring and the inner wall swing joint of spacing pipe.

Preferably, the hydro-cylinder adopt circular box-like structure, the quantity that returns the oil pipe way adopts a plurality of, a plurality of is the even outside of installing at the hydro-cylinder of star distribution, the quantity of oil-out, the quantity of oil inlet and the quantity homogeneous distribution of oil return stop valve are corresponding with the quantity that returns the oil pipe way, the inner chamber of hydro-cylinder adopts cylindric structure, first piston adopts annular sheet structure, is provided with the stop valve regulation hole on the shell, the stop valve regulation hole is located the outside of oil return stop valve, the quantity of oil return stop valve and the quantity of stop valve regulation hole are corresponding.

Preferably, a buffer layer is arranged above the impact head, and the buffer layer is of a round table-shaped structure or a hemispherical structure made of rubber materials.

Preferably, the limiting pipe is of a tubular structure, the second limiting ring is of an annular structure made of polytetrafluoroethylene materials, and the outer diameter of the second limiting ring is matched with the inner diameter of the limiting pipe.

The utility model has the advantages that: firstly, the stop valve is arranged on the oil return pipeline of the oil circuit, so that the oil return speed can be conveniently adjusted, and a worker can reasonably adjust the opening and closing angle of the stop valve according to the use condition so as to achieve relatively reasonable buffering time; secondly, the utility model adopts the oil cylinder and the oil return pipeline to be arranged in the shell, the oil cylinder is provided with the oil filling port and the oil overflow port, and the oil overflow port and the oil filling port are respectively provided with the sealing plugs, so that the oil circuit part of the utility model is arranged in the shell, and the shell is equivalent to a layer of protective shell, thereby reducing the probability that the oil material directly leaks to the outside of the product; finally, the utility model discloses the second spacing ring adopts the annular structure of being made by polytetrafluoroethylene material, second spacing ring and spacing pipe swing joint, adopt polytetrafluoroethylene material second spacing ring to have the self-lubricating function, the coefficient of friction between second spacing ring and the spacing pipe has been reduced, the second spacing ring that is located on the second piston in addition still has the effect that prevents that the telescopic link from taking place to deflect, effectively reduced because the telescopic link position takes place to deflect and the first piston that leads to is dead at the hydro-cylinder card and the probability that this product can not normally work of leading to. The utility model has the advantages of simple structure, convenient operation, design benefit has improved work efficiency greatly, has fine social and economic benefits, is the product of easily using widely.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, a hydraulic buffer for a standard metal measuring device comprises a shell 1, wherein the shell 1 is of a circular tubular structure, an oil cylinder 2 is arranged in the shell 1, a first piston 3 is arranged in the oil cylinder 2, a telescopic rod 4 is sleeved on the first piston 3 and the oil cylinder 2, the first piston 3 is matched with an inner cavity of the oil cylinder 2, an oil path circulating device is arranged on the oil cylinder 2, the oil path circulating device comprises an oil outlet 5, an oil inlet 6 and an oil return pipeline 7, the oil outlet 5 is communicated with the oil inlet 6 through the oil return pipeline 7, and an oil return stop valve 8 is arranged on the oil return pipeline 7; the top of telescopic link 4 is provided with striking head 9, and the bottom of telescopic link 4 is provided with second piston 10, and the below of second piston 10 is provided with third piston 11, and the outside of third piston 11 and second piston 10 is provided with spacing pipe 12, is provided with reset spring 13 between second piston 10 and the third piston 11.

The oil cylinder 2 and the oil return pipeline 7 are arranged in the shell 1, an oil filling opening 29 and an oil overflow opening 28 are arranged on the oil cylinder 2, and sealing plugs are respectively arranged on the oil overflow opening 28 and the oil filling opening 29.

An elastic force adjusting device is arranged below the limiting tube 12 and comprises a lower sealing plate 14, the lower sealing plate 14 is of a plate-shaped structure, the shell 1 and the lower sealing plate 14 and the limiting tube 12 are fixedly connected in a welding mode respectively, the lower sealing plate 14 is provided with a nut containing groove 15 along the bottom surface of the lower sealing plate 14 and towards the top surface of the lower sealing plate 14, the lower sealing plate 14 is provided with a limiting ring containing groove 16 along the top surface of the lower sealing plate 14 and towards the bottom surface of the lower sealing plate 14, the limiting ring containing groove 16 is communicated with the nut containing groove 15, an adjusting nut 17 is arranged in the nut containing groove 15, a gap is formed between the adjusting nut 17 and the nut containing groove 15, and a worker adjusts the initial length of the reset spring 13 by adjusting an elastic force adjusting screw 19 through the gap; the limiting ring containing groove 16 is internally provided with a first limiting ring 18, the first limiting ring 18 is fixedly connected with an adjusting nut 17, the first limiting ring 18 and the adjusting nut 17 are sleeved with an elastic adjusting screw rod 19, the elastic adjusting screw rod 19 is in threaded connection with the adjusting nut 17, and the top end of the elastic adjusting screw rod 19 is fixedly sleeved at the bottom of the third piston 11.

2 top of hydro-cylinder be provided with spacing piece 20 of elasticity, spacing piece 20 of elasticity adopts arc elasticity lamellar structure, spacing piece mounting groove 21 has been seted up on the inner wall of hydro-cylinder 2, spacing piece mounting groove 21 and the spacing 20 swing joint of elasticity, be provided with shrouding 22 on the telescopic link 4 between spacing piece 20 of elasticity and the hydro-cylinder 2, it adopts annular lamellar structure to go up shrouding 22, the external diameter of spacing piece 20 of elasticity is not less than the external diameter of last shrouding 22, the internal diameter of spacing piece 20 of elasticity is not more than the external diameter of last shrouding 22, be provided with first sealing washer 23 on the telescopic link 4 of last shrouding 22 and hydro-cylinder 2, the bottom surface of first sealing washer 23 and the top surface fixed connection of hydro-cylinder 2, be provided with second sealing washer 24 on the telescopic link 4 between hydro-cylinder 2 and second piston 10, the.

The bottom of second piston 10, the top of second piston 10, the bottom of third piston 11 and the top of third piston 11 are equallyd divide and are adopted cylindrical structure respectively, the diameter at the top of second piston 10 and the diameter of the bottom of third piston 11 are equallyd divide and are not more than the internal diameter of spacing pipe 12 respectively, the internal diameter of the bottom of second piston 10 and the internal diameter of the top of third piston 11 are all not more than reset spring 13's internal diameter, the bottom of second piston 10 and the top of third piston 11 are equallyd divide and are do not fixed suit reset spring 13 on, it is provided with second spacing ring 25 respectively to equallyd divide on the top of second piston 10 and the bottom of third piston 11, the external diameter of second spacing ring 25 and the internal diameter of spacing pipe 12 are corresponding, second spacing ring 25 suit is in spacing pipe 12, the lateral wall of second spacing ring 25 and the inner wall swing joint of spacing pipe 12.

Hydro-cylinder 2 adopt circular box-like structure, the quantity of returning oil pipe way 7 adopts a plurality of, a plurality of is the even outside of installing at hydro-cylinder 2 of star distribution, the quantity of oil-out 5, the quantity of oil inlet 6 and the quantity of return stop valve 8 are equallyd divide do not corresponding with the quantity of returning oil pipe way 7, the inner chamber of hydro-cylinder 2 adopts cylindric structure, first piston 3 adopts annular sheet structure, the internal diameter and the 4 diameters of telescopic link of first piston 3 are corresponding, the lateral wall of telescopic link 4 and the inner wall of first piston 3 pass through welded mode fixed connection, the external diameter of first piston 3 and the diameter of 2 inner chambers of hydro-cylinder cooperate, be provided with stop valve regulation hole 26 on shell 1, stop valve regulation hole 26 is located the outside of return stop valve 8, the quantity of return stop valve 8 and the quantity of stop valve.

A buffer layer 27 is arranged above the impact head 9, and the buffer layer 27 is of a round table-shaped structure or a hemispherical structure made of rubber materials. The limiting pipe 12 is of a tubular structure, the second limiting ring 25 is of an annular structure made of polytetrafluoroethylene materials, and the polytetrafluoroethylene materials have self-lubricating functions, so that the outer diameter of the second limiting ring 25 is reduced, and the inner diameter of the limiting pipe 12 is matched with the outer diameter of the second limiting ring.

Example (b): as shown in fig. 1, firstly, the position of the first piston 3 is adjusted by adjusting the telescopic rod 4 until the first piston 3 is located between the oil outlet 5 and the oil inlet 6, then hydraulic oil is injected into the oil cylinder 2 through injecting the hydraulic oil into the oil injection port 29, then, the oil injection port 28 and the oil injection port 29 are respectively covered with the sealing plugs, then, the second piston 10 and the second sealing ring 24 are sequentially installed in the limiting pipe 12, then, the corresponding rotary oil cylinder 2 corresponds to the oil return stop valve 8 and the limiting piece installation groove 21, then, the first sealing ring 23 and the upper sealing plate 22 are sequentially sleeved in the shell 1 below the limiting piece installation groove 21, and finally, the elastic limiting piece 20 is installed in the limiting piece installation groove 21 to complete the pre-installation of the product.

According to the practical use condition, firstly, the product is installed to the preset position, then, the object to be buffered is installed above the product, in the buffering process, the bottom surface of the object to be buffered firstly contacts with the buffer layer 27 on the impact head 9, the buffer layer 27 is firstly compressed, then the telescopic rod 4 moves downwards, and further drives the second piston 10 and the first piston 3 to move downwards, the first piston 3 moves downwards to drive the hydraulic oil in the oil cylinder 2 cavity below the first piston 3 to sequentially pass through the oil outlet 5, the oil return pipeline 7 and the oil inlet 6 from the oil cylinder 2 cavity below the first piston 3 to enter the oil cylinder 2 cavity above the first piston 3, the second piston 10 moves downwards to further compress the return spring 13, and the compressed time is observed in the process. Then the object to be buffered is reset, the reset spring 13 drives the second piston 10 to move upwards so as to drive the telescopic rod 4 to move upwards, so that the first piston 3 is driven to move upwards, hydraulic oil sequentially enters the cavity of the oil cylinder 2 below the first piston 3 from the cavity of the oil cylinder 2 above the first piston 3 through the oil inlet 6, the oil return pipeline 7 and the oil outlet 5 in the process, the reset of the first piston 3 is completed, and the reset time is observed in the process.

The product is taken out, and the opening and closing of the oil return stop valves 8 are reasonably adjusted according to the compressed time and the reset time, so that the buffering speed is adjusted to a reasonable range. And then the adjusting nut 17 is adjusted according to the reset time to drive the elastic force adjusting screw rod 19 to move upwards or downwards so as to adjust the initial length of the reset spring 13 and further change the compressed distance of the reset spring 13, thereby changing the elastic force required by reset to adjust the reset speed. And finally, mounting the adjusted product to a preset position for buffering preset articles.

Through the embodiment, the technical problem that the oil return speed of the hydraulic buffer can be adjusted conveniently is solved, and meanwhile, the product can adjust the elastic force required by resetting of the impact head 9, so that the application range of the product is wider.

The utility model discloses a satisfy a hydraulic buffer for standard metal measuring vessel in buffer field worker needs, make the utility model discloses extensive market prospect has.

Claims

1. A hydraulic buffer for standard metal gauges, comprising a casing (1), characterized in that: an oil cylinder (2) is arranged in the shell (1), a first piston (3) is arranged in the oil cylinder (2), a telescopic rod (4) is sleeved on the first piston (3) and the oil cylinder (2), an oil path circulating device is arranged on the oil cylinder (2), the oil path circulating device comprises an oil outlet (5), an oil inlet (6) and an oil return pipeline (7), the oil outlet (5) is communicated with the oil inlet (6) through the oil return pipeline (7), and an oil return stop valve (8) is arranged on the oil return pipeline (7); the top of telescopic link (4) is provided with striking head (9), and the bottom of telescopic link (4) is provided with second piston (10), and the below of second piston (10) is provided with third piston (11), and the outside of third piston (11) and second piston (10) is provided with spacing pipe (12), is provided with reset spring (13) between second piston (10) and third piston (11).

2. The hydraulic buffer for a standard metal gauge of claim 1, wherein: the utility model discloses a spacing pipe (12) below be provided with elasticity adjusting device, elasticity adjusting device include shrouding (14) down, shrouding (14) have been seted up along the bottom surface of the downward shrouding (14) of bottom surface of shrouding (14) down and have been seted up the nut and have been held groove (15) down, shrouding (14) have been seted up the spacing ring along the bottom surface of the downward shrouding (14) of top surface of lower shrouding (14) and have been held groove (16) down, the spacing ring holds groove (16) and nut and holds groove (15) and be linked together, the nut holds and is provided with adjusting nut (17) in groove (15), the spacing ring holds and is provided with first spacing ring (18) in groove (16), first spacing ring (18) and adjusting nut (17) fixed connection, the cover is equipped with elasticity adjusting screw (19) on first spacing ring (18) and adjusting nut (17), elasticity adjusting screw (19) and adjusting nut (17) threaded connection, the fixed suit in the bottom of third piston (.

3. The hydraulic buffer for a standard metal gauge of claim 1, wherein: hydro-cylinder (2) top be provided with spacing piece of elasticity (20), spacing piece of elasticity (20) adopt arc elasticity lamellar structure, spacing piece mounting groove (21) have been seted up on the inner wall of hydro-cylinder (2), spacing piece mounting groove (21) and spacing piece of elasticity (20) swing joint, be provided with shrouding (22) on telescopic link (4) between spacing piece of elasticity (20) and hydro-cylinder (2), be provided with first sealing washer (23) on telescopic link (4) of going up shrouding (22) and hydro-cylinder (2), the bottom surface of first sealing washer (23) and the top surface fixed connection of hydro-cylinder (2), be provided with second sealing washer (24) on telescopic link (4) between hydro-cylinder (2) and second piston (10), the top surface of second sealing washer (24) and the bottom surface fixed connection of hydro-cylinder (2).

4. The hydraulic buffer for a standard metal gauge of claim 1, wherein: the bottom of second piston (10) and the top of third piston (11) equally divide and do not adopt cylindrical structure, the bottom of second piston (10) and the top of third piston (11) equally divide and do not fix suit reset spring (13) on, equally divide on the top of second piston (10) and the bottom of third piston (11) and do not be provided with second spacing ring (25), second spacing ring (25) suit is in spacing pipe (12), the lateral wall of second spacing ring (25) and the inner wall swing joint of spacing pipe (12).

5. The hydraulic buffer for a standard metal gauge of claim 1, wherein: hydro-cylinder (2) adopt circular box-like structure, the quantity of returning oil pipe way (7) adopts a plurality of, a plurality of is the even outside of installing in hydro-cylinder (2) of star distribution, the quantity of oil-out (5), the quantity of oil inlet (6) and the quantity evenly distributed of oil return stop valve (8) are corresponding with the quantity of returning oil pipe way (7), the inner chamber of hydro-cylinder (2) adopts cylindric structure, annular sheet structure is adopted in first piston (3), be provided with stop valve regulation hole (26) on shell (1), stop valve regulation hole (26) are located the outside of oil return stop valve (8), the quantity of oil return stop valve (8) and the quantity of stop valve regulation hole (26) are corresponding.

6. The hydraulic buffer for a standard metal gauge of claim 1, wherein: a buffer layer (27) is arranged above the impact head (9), and the buffer layer (27) is of a round table-shaped structure or a hemispherical structure made of rubber materials.

7. The hydraulic buffer for a standard metal gauge of claim 4, wherein: the limiting pipe (12) is of a tubular structure, the second limiting ring (25) is of an annular structure made of polytetrafluoroethylene materials, and the outer diameter of the second limiting ring (25) is matched with the inner diameter of the limiting pipe (12).