CN213451434U - Normally open type brake caliper capable of automatically adjusting clearance by utilizing floating piston - Google Patents
Normally open type brake caliper capable of automatically adjusting clearance by utilizing floating piston Download PDFInfo
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- CN213451434U CN213451434U CN202022396495.8U CN202022396495U CN213451434U CN 213451434 U CN213451434 U CN 213451434U CN 202022396495 U CN202022396495 U CN 202022396495U CN 213451434 U CN213451434 U CN 213451434U
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- 239000003921 oil Substances 0.000 claims description 89
- 239000010720 hydraulic oil Substances 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 241000227287 Elliottia pyroliflora Species 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
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- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
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- 230000002457 bidirectional effect Effects 0.000 description 1
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Abstract
The utility model provides an utilize floating piston to accomplish normally open brake caliper in automatically regulated clearance, includes, hydro-cylinder assembly and pincers body assembly, its characterized in that: the limiting retainer ring separates the cylinder body of the oil cylinder to form an adjusting cavity and a working oil cavity, a floating piston is placed in the working oil cavity, the adjusting piston is placed in the adjusting cavity, the cylinder cover A of the oil cylinder penetrates through a piston rod of the adjusting piston to be fixedly connected with the cylinder body of the oil cylinder, and the cylinder cover B of the oil cylinder is fixedly connected with the cylinder body of the oil cylinder. The two oil cavities of the brake caliper oil cylinder assembly are independent, the sealing performance is not interfered with each other, only one piston of each double piston extends out of the oil cylinder, and the single-side piston extends out of the oil cylinder to replace the double-piston extending out of the oil cylinder, so that the problems of no supporting point, instability and short service life of a sealing element and oil leakage of the oil cylinder are solved, the equipment is more stable and reliable while the clearance is compensated, in addition, the extending amount of the piston of the oil cylinder can be stably and reliably automatically compensated after the brake block and the brake disc of the brake caliper are abraded, and the brake block and the brake disc can automatically keep an ideal brake clearance.
Description
Technical Field
The utility model relates to an oil-well rig, workover rig, geological prospecting rig, wind generating set and marine anchor windlass hydraulic pressure disc brake equipment, especially an utilize floating piston to accomplish normally open brake caliper in automatic adjustment clearance.
Background
The normally open pliers commonly used in the market at present mainly have the forms of (1) adjusting the extension amount of a tension spring, (2) adjusting the extension amount of a piston or a cylinder body by a nut, (3) manually injecting oil to adjust the extension amount of the piston, (4) completing automatic adjustment by utilizing a fixed piston at one end, and the like. The first three forms of normally-opened pincers need manual adjustment of gaps, if adjustment is not timely or ineffective, the gaps between the brake blocks and the brake disc are continuously increased along with abrasion of the brake blocks and the brake disc, so that the brake reaction speed is slower and slower, the brake blocks are enabled to be attached to the brake disc at the limit all the time, and the speed of field braking is greatly influenced. And there are cases where workers are labor intensive or where invalidation occurs frequently. The fourth utilizes the fixed piston of one end to accomplish automatically regulated's normally open pincers hydro-cylinder generally to need to have two pistons, and its drawback has: a) the pistons on two sides are provided with a supporting point, the cylinder body of the oil cylinder is not provided with the supporting point, and the self weight of the cylinder body completely falls on the seal in the oil cylinder, so that the service life of the seal is greatly reduced. b) The cylinder body loses support, so that the cylinder body of the oil cylinder and the pistons at two sides of the oil cylinder can not share the same axial lead when the brake caliper brakes and releases, the instability phenomenon of the oil cylinder assembly is serious in the use process, and the piston seal is damaged by back-and-forth extrusion friction, so that the service life is shortened. The service life of the inner seal of the oil cylinder is greatly influenced by the two defects, the service life of the oil cylinder seal in the market is very short, a user needs to frequently replace the seal or integrally replace the oil cylinder, and the field construction progress is seriously influenced.
Chinese utility model patent CN203702944U discloses a two-way double-piston hydraulic pressure automatic compensation clearance's hydro-cylinder to specifically disclose the hydro-cylinder include: the cylinder body comprises a first oil chamber and a second oil chamber which are arranged in the cylinder body; the check valve is used for communicating the first oil chamber and the second oil chamber; the oil port comprises a first oil port and a second oil port which are respectively communicated with the first oil chamber and the second oil chamber; the exhaust pressure measuring joint is connected with the second oil port; a piston including a first piston and a second piston disposed in the first oil chamber and the second oil chamber, respectively; the cylinder cover comprises a first cylinder cover and a second cylinder cover which are connected with the cylinder body; the breathing hole comprises a first breathing hole and a second breathing hole which are respectively arranged on the first cylinder cover and the second cylinder cover. The oil cylinder with the bidirectional double-piston hydraulic automatic clearance compensation can solve the problems that in the prior art, the method for automatically adjusting the clearance has poor braking capability, resources are wasted due to the increase of oil pressure, the clearance adjustment is unstable, and the structure is complex. But the decentraction can cause the piston unstability when two pistons stretch out simultaneously, and the oil leak appears in the sealing member life-span short, and the security reduces, increases user of service work maintenance volume, delays drawbacks such as construction progress.
Disclosure of Invention
To the not enough of above-mentioned technical problem existence, the utility model aims to provide an utilize floating piston to accomplish normally open brake caliper in automatic adjustment clearance, this brake caliper has solved among the prior art two pistons and has fixed one end respectively and make the hydro-cylinder body lose the support, and the dead weight of cylinder body has fallen on the sealed drawback in the hydro-cylinder completely, has solved simultaneously that cylinder body and both sides piston can not be with the axial lead, causes the serious drawback of hydro-cylinder assembly unstability phenomenon in the use.
The utility model provides an utilize floating piston to accomplish normally open brake caliper in automatically regulated clearance, includes, hydro-cylinder assembly and pincers body assembly, its characterized in that: the oil cylinder is characterized in that a limiting retainer ring is arranged in the oil cylinder body, the limiting retainer ring separates the oil cylinder body to form an adjusting cavity and a working oil cavity, a floating piston is placed in the working oil cavity, the adjusting piston is placed in the adjusting cavity, an oil cylinder cover A penetrates through a piston rod of the adjusting piston to be fixedly connected with the oil cylinder body, and an oil cylinder cover B is fixedly connected with the oil cylinder body.
The left side of the floating piston is provided with a circular boss, a threaded hole is formed in the center of the circular boss and communicated with a counter bore in the center of the right side of the floating piston, and the one-way safety valve is arranged in the counter bore and is in threaded connection with the threaded hole.
The circular boss on the left side of the floating piston is in clearance fit with the circular hole in the center of the limiting check ring, and the floating piston is righted.
A first sealing ring, a first guide belt and a second sealing ring are arranged on the floating piston; and the inner side of the cylinder cover B of the oil cylinder is provided with a hole groove matched with the one-way safety valve.
The center of the cylinder cover A of the oil cylinder is provided with a guide hole, a dust ring and a second guide belt are arranged in the guide hole, a piston rod of the adjusting piston penetrates through the guide hole in the center of the cylinder cover A of the oil cylinder to be in friction contact with the dust ring and the second guide belt, and the adjusting piston is righted to move in the adjusting cavity through the cylinder cover A of the oil cylinder.
And threaded through holes are respectively formed in the cylinder body parts of the adjusting cavity and the working oil cavity close to the limiting check ring, and an exhaust joint is respectively arranged on each threaded through hole.
An oil inlet has been seted up on hydro-cylinder cap B, and hydraulic oil P gets into the working oil intracavity through the oil inlet, promotes floating piston and removes to the left side, makes floating piston and the spacing retaining ring in the hydro-cylinder body laminate mutually, and when hydraulic oil pressure was greater than a definite value, gets into through one-way relief valve and adjusts the chamber, promotes adjusting piston and removes to hydro-cylinder cap A direction, and hydraulic oil can extrude the hydro-cylinder body through exhaust joint to the air between floating piston and the adjusting piston simultaneously.
A fourth sealing ring, a third guide belt and a fifth sealing ring are arranged on the adjusting piston; a groove is formed in the right side of the adjusting piston, and a certain gap is reserved between the floating piston and the adjusting piston when the floating piston moves to the position of the limiting retainer ring.
A round hole is milled on the left side of a piston rod of the adjusting piston, and a copper sleeve is arranged in the round hole; the adjusting piston and the oil cylinder cover B are hinged together with the clamp arm through a first pin shaft respectively, two spiral tension spring adjusting devices are installed between the first pin shaft and the first pin shaft, and the spiral tension spring adjusting devices are installed on two sides of the first pin shaft.
The two clamp arms are hinged together through a support rod arranged in the middle, the support rod is installed on a clamp frame, the lower portions of the clamp arms are hinged together with the back plates through third hinge pins, brake blocks are installed on the inner sides of the two back plates, the brake disc is fixedly installed on a winch roller needing to be braked and rotates along with the winch roller, and the clamp frame is welded on the winch frame.
The utility model discloses two oil pockets of hydro-cylinder assembly are independent, leakproofness mutually noninterfere, the hydro-cylinder is stretched out to double-piston only one piston, unilateral piston stretches out the hydro-cylinder and replaces double-piston to stretch out the hydro-cylinder, the hydro-cylinder body does not have strong point, unstability has been solved, the problem of the short oil leak of sealing member life-span to equipment is more stable and reliable when letting the clearance obtain the compensation, improves braking response speed, has greatly guaranteed hydro-cylinder and sealed life, reduces workman intensity of labour and invalid operation. The normally open type brake caliper capable of automatically adjusting the clearance by utilizing the floating piston has an automatic adjusting function, and can stably and reliably automatically compensate the extension amount of the piston of the oil cylinder after the brake block and the brake disc are abraded, so that the brake block and the brake disc automatically keep an ideal brake clearance. The extrusion and abrasion of the seal are greatly reduced, the service life of the hydraulic disc brake is prolonged, the maintenance period of equipment is greatly prolonged, the brake speed and the automation degree of the hydraulic disc brake are greatly improved, and the working strength of operators is reduced.
Drawings
FIG. 1 is a schematic structural view of a normally open type brake caliper cylinder assembly of the present invention;
fig. 2 is a schematic structural diagram of the normally open brake caliper of the present invention.
In the figure: the device comprises an adjusting piston 1, an oil cylinder cover A2, an adjusting cavity 3, an oil cylinder body 4, an exhaust joint 5, a first sealing ring 6, a first guide belt 7, a second sealing ring 8, a floating piston 9, a third sealing ring 10, an oil cylinder cover B11, a breather 12, a dust ring 13, a second guide belt 14, a fourth sealing ring 15, a third guide belt 16, a fifth sealing ring 17, a one-way safety valve 18, a working oil cavity 19, an oil inlet 20, a first pin shaft 21, a spiral tension spring adjusting device 22, a caliper arm 23, a second pin shaft 24, a support rod 25, a caliper bracket 26, a third pin shaft 27, a back plate 28, a brake block 29, a brake disc 30 and a limit retainer ring 31.
Detailed Description
As shown in fig. 1 and 2, a limit retainer 31 is provided inside the cylinder block 4, and the cylinder block 4 is separated by the limit retainer 31 to form the adjustment chamber 3 and the working oil chamber 19. A fourth sealing ring 15, a third guide band 16 and a fifth sealing ring 17 are mounted on the adjusting piston 1, and the adjusting piston 1 is inserted into the adjusting chamber 3. The cylinder cover A2 penetrates through a piston rod of the adjusting piston 1 to be fastened with the cylinder body 4 through a bolt and a spring washer, a dust ring 13 and a second guide belt 14 are arranged in a central guide hole of the cylinder cover A2, the piston rod of the adjusting piston 1 penetrates through the guide hole in the center of the cylinder cover A2 to be in frictional contact with the dust ring 13 and the second guide belt 14, and the adjusting piston 1 is centered by the cylinder cover A2 to move in the adjusting cavity 3. The cylinder cover A2 is also provided with a through hole which is communicated with the adjusting cavity 3, and the breather 12 is arranged on the through hole.
The floating piston 9 is provided with a first sealing ring 6, a first guide belt 7 and a second sealing ring 8, the floating piston 9 is arranged in a working oil cavity 19, the left side of the floating piston 9 is provided with a circular boss, the center of the circular boss is provided with a threaded hole, the threaded hole is communicated with a counter bore at the center of the right side of the floating piston 9, a one-way safety valve 18 is arranged in the counter bore and is in threaded connection with the threaded hole, the sealing ring is arranged between the one-way safety valve 18 and the counter bore, and the circular boss at the left side of the floating piston 9 and the circular bore at the center of the limiting retainer ring 31 form clearance fit to play a role in right.
And a boss on the left side of the oil cylinder cover B11 is provided with a third sealing ring 10, and the surface of the oil cylinder cover B11 is tapped with a threaded through hole as an oil inlet P. The cylinder cover B11 is fastened with the cylinder body 4 through bolts and spring washers, the inner side of the cylinder cover B11 is provided with a hole groove matched with the one-way safety valve 18, and the diameter of the hole groove is larger than that of the one-way safety valve 18. A groove is formed in the right side of the adjusting piston (1), and when the floating piston (9) moves to the position of the limiting retainer ring (31), a certain gap is reserved between the floating piston (9) and the adjusting piston (1).
The cylinder body parts of the working oil cavity 19 and the adjusting cavity 3 are respectively provided with a threaded through hole near the limiting retainer ring 31, the threaded through holes are respectively provided with an exhaust joint 5, when hydraulic oil P enters the working oil cavity 19 in the oil cylinder assembly, the hydraulic oil firstly pushes the floating piston 9 to move towards the left side, so that the floating piston 9 is attached to the limiting retainer ring 31 of the oil cylinder body 4, when the pressure of the hydraulic oil is greater than a certain value, the hydraulic oil enters the adjusting cavity 3 through the one-way safety valve 18, and the adjusting piston 1 is pushed to move towards the cylinder cover A2. Meanwhile, the air between the floating piston 9 and the adjusting piston 1 can be extruded out of the oil cylinder by the hydraulic oil through the exhaust joint 5, so that the action of the oil cylinder assembly is more rapid and stable.
A round hole is milled on the left side of a piston rod of the adjusting piston 1, and a copper sleeve is arranged in the round hole. A round hole is milled on a boss on the right side of the cylinder cover B11, and a copper sleeve is arranged in the round hole. The adjusting piston 1 is hinged with the clamp arm 23 through a first pin shaft 21, the cylinder cover B11 is hinged with the other clamp arm 23 through the first pin shaft 21, and the cylinder assembly can rotate relative to the clamp arm 23 by taking the first pin shaft 21 as a center. Two spiral tension spring adjusting devices 22 are arranged between the first pin shaft 21 and the first pin shaft 21, and the two spiral tension spring adjusting devices 22 are arranged on two sides of the first pin shaft 21.
The support rod 25 is mounted on a clamp frame 26, and the two clamp arms 23 are hinged together through the support rod 25 arranged at the middle position. One end of the supporting rod 25 is connected with one of the clamp arms 23 through a second pin shaft 24, the other end of the supporting rod 25 is connected with the other clamp arm 23 through the second pin shaft 24, and the supporting rod 25 rotates relative to the second pin shaft 24. The lower part of the clamp arm 23 is hinged with the back plate 28 through a third pin shaft 27, and the clamp arm 23 can rotate relative to the back plate 28 by taking the third pin shaft 27 as a center. The inner sides of the two back plates 28 are respectively provided with a brake block 29, the back plates 28 and the brake blocks 29 are fastened together through bolts and spring washers, the gap between the brake blocks 29 and a brake disc 30 is a set value, and the brake disc 30 is fixedly arranged on a winch roller needing to be braked and rotates along with the winch roller. The clamp frame 26 is welded to the winch frame.
When the brake caliper needs to perform a braking action, a working brake lever is pulled, hydraulic oil P enters a working oil cavity 19 from an oil inlet 20, the hydraulic oil firstly pushes a floating piston 9 to move towards the left side, so that the floating piston 9 is attached to a limiting retainer ring 31 of an oil cylinder body 4, the one-way safety valve 18 has set opening pressure, when the hydraulic oil pressure is greater than a certain value, the hydraulic oil enters an adjusting cavity 3 through the one-way safety valve 18, the adjusting piston 1 is pushed to extend, the oil cylinder cover B11 and the adjusting piston 1 respectively push a caliper arm 23 to move outwards, meanwhile, the spiral tension spring adjusting device 22 is pulled to generate certain tension, the caliper arm 23 pushes a back plate 28 to move inwards under the lever principle effect, and finally, the brake block 29 tightly presses a brake disc 30 rotating along with a roller.
When the brake caliper releases the brake, hydraulic oil is decompressed, the pressure at the oil inlet 20 of the oil cylinder assembly is 0, and the hydraulic oil between the two pistons cannot leak outwards under the sealing of the fifth sealing ring 17, the first sealing ring 6 and the one-way safety valve 18, so that a dead space is formed. The adjusting piston 1 in the oil cylinder moves in the oil cylinder under the action of the tension of the spiral tension spring adjusting device 22, hydraulic oil in an oil cavity between the two pistons is extruded to generate pressure, the generated pressure pushes the floating piston 9 to move towards the cylinder cover B11 of the oil cylinder, the hydraulic oil in the working oil cavity 19 is pressed back to an oil tank of a hydraulic station through a hydraulic pipeline, the distance of the return movement of the adjusting piston 1 is the maximum stroke of the floating piston 9 in the oil cylinder, and the stroke of the floating piston 9 can be set according to actual requirements, so that the gap between the brake block 29 and the brake disc 30 can be kept at an ideal fixed value in the brake releasing process of the working caliper.
In the whole working process of the normally open brake caliper with the automatic gap adjustment function by utilizing the floating piston 9, the cylinder cover B11 of the oil cylinder is always connected with the caliper arm 23 through the first pin shaft 21, and the self weight of the oil cylinder is supported by the caliper arm 23, so that the extrusion borne by all seals is reduced, and the coaxial axes of the cylinder body 4 of the oil cylinder, the adjusting piston 1 and the floating piston 9 in the whole working process can be maintained.
In the whole working process of the normally open brake caliper capable of automatically adjusting the clearance by utilizing the floating piston 9, the moving directions of the adjusting piston 1 and the floating piston 9 are consistent in the whole working process.
Claims (10)
1. The utility model provides an utilize floating piston to accomplish normally open brake caliper in automatically regulated clearance, includes, hydro-cylinder assembly and pincers body assembly, its characterized in that: be equipped with spacing retaining ring (31) in the inside of hydro-cylinder body (4), spacing retaining ring (31) keep apart hydro-cylinder body (4) and form regulation chamber (3) and working oil chamber (19), floating piston (9) have been placed in working oil chamber (19), regulation piston (1) have been placed in regulation chamber (3), piston rod that adjusting piston (1) were passed in hydro-cylinder cover A (2) is connected fixedly with hydro-cylinder body (4), hydro-cylinder cover B (11) is connected fixedly with hydro-cylinder body (4).
2. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in claim 1, wherein: the left side of the floating piston (9) is provided with a circular boss, the center of the circular boss is provided with a threaded hole, the threaded hole is communicated with a counter bore in the center of the right side of the floating piston (9), and the one-way safety valve (18) is arranged in the counter bore and is in threaded connection with the threaded hole.
3. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in claim 2, wherein: the circular boss on the left side of the floating piston (9) and the circular hole in the center of the limiting retainer ring (31) form clearance fit, and the floating piston (9) is centered.
4. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in any one of claims 1, 2 and 3, wherein: a first sealing ring (6), a first guide belt (7) and a second sealing ring (8) are arranged on the floating piston (9); the inner side of the cylinder cover B (11) is provided with a hole groove matched with the one-way safety valve (18).
5. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in claim 1, wherein: the center of hydro-cylinder cap A (2) is equipped with the guiding hole, is equipped with dust ring (13) and second guidance tape (14) in the guiding hole, and the piston rod of adjusting piston (1) passes the guiding hole at hydro-cylinder cap A (2) center, with dust ring (13) and second guidance tape (14) frictional contact, rights adjusting piston (1) through hydro-cylinder cap A (2) and removes in regulation chamber (3).
6. The normally open brake caliper capable of automatically adjusting the clearance by using the floating piston as claimed in claim 5, wherein: the cylinder body parts of the adjusting cavity (3) and the working oil cavity (19) are respectively provided with a threaded through hole near the limiting retainer ring (31), and the threaded through holes are respectively provided with an exhaust joint (5).
7. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in claim 1, wherein: an oil inlet (20) is formed in the oil cylinder cover B (11), hydraulic oil P enters the working oil cavity (19) through the oil inlet (20), the floating piston (9) is pushed to move towards the left side, the floating piston (9) is made to be attached to a limiting retainer ring (31) in the oil cylinder body (4), when the pressure of the hydraulic oil is larger than a certain value, the hydraulic oil enters the adjusting cavity (3) through the one-way safety valve (18), the adjusting piston (1) is pushed to move towards the oil cylinder cover A (2), and meanwhile, the air between the floating piston (9) and the adjusting piston (1) can be extruded out of the oil cylinder body (4) through the exhaust connector (5).
8. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in claim 7, wherein: a fourth sealing ring (15), a third guide belt (16) and a fifth sealing ring (17) are arranged on the adjusting piston (1); a groove is formed in the right side of the adjusting piston (1), and when the floating piston (9) moves to the position of the limiting retainer ring (31), a certain gap is reserved between the floating piston (9) and the adjusting piston (1).
9. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in claim 8, wherein: a round hole is milled on the left side of a piston rod of the adjusting piston (1), and a copper sleeve is arranged in the round hole; the round hole is milled on the boss on the right side of the oil cylinder cover B (11), the copper bush is arranged in the round hole, the adjusting piston (1) and the oil cylinder cover B (11) are hinged together through a first pin shaft (21) and a clamp arm (23) respectively, two spiral tension spring adjusting devices (22) are installed between the first pin shaft (21) and the first pin shaft (21), and the spiral tension spring adjusting devices (22) are installed on two sides of the first pin shaft (21).
10. The normally open brake caliper for achieving automatic gap adjustment by using the floating piston as claimed in claim 9, wherein: the winch is characterized in that the two clamp arms (23) are hinged together through a support rod (25) arranged in the middle, the support rod (25) is installed on the clamp frame (26), the lower parts of the clamp arms (23) are hinged together with the back plate (28) through a third pin shaft (27), brake blocks (29) are installed on the inner sides of the two back plates (28), the brake disc (30) is fixedly installed on a winch roller needing to be braked and rotates along with the winch roller, and the clamp frame (26) is welded on the winch frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022396495.8U CN213451434U (en) | 2020-10-26 | 2020-10-26 | Normally open type brake caliper capable of automatically adjusting clearance by utilizing floating piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022396495.8U CN213451434U (en) | 2020-10-26 | 2020-10-26 | Normally open type brake caliper capable of automatically adjusting clearance by utilizing floating piston |
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| Publication Number | Publication Date |
|---|---|
| CN213451434U true CN213451434U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022396495.8U Active CN213451434U (en) | 2020-10-26 | 2020-10-26 | Normally open type brake caliper capable of automatically adjusting clearance by utilizing floating piston |
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| CN (1) | CN213451434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114161687A (en) * | 2021-11-30 | 2022-03-11 | 考特斯机械科技(佛山)有限公司 | Die pressure balancing device |
-
2020
- 2020-10-26 CN CN202022396495.8U patent/CN213451434U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114161687A (en) * | 2021-11-30 | 2022-03-11 | 考特斯机械科技(佛山)有限公司 | Die pressure balancing device |
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Effective date of registration: 20231030 Address after: 062550 Sixian Industrial Zone, Renqiu City, Cangzhou City, Hebei Province Patentee after: Renqiu collier Electromechanical Equipment Co.,Ltd. Address before: Room 1402, gate 2, building 14, Fuyuan Garden, Xuri Road, Binhai New Area, Tianjin 300450 Patentee before: Xu Xiaoou |