CN101879906B - Hanging device for tight-lock coupler - Google Patents

Hanging device for tight-lock coupler Download PDF

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Publication number
CN101879906B
CN101879906B CN201010222972.7A CN201010222972A CN101879906B CN 101879906 B CN101879906 B CN 101879906B CN 201010222972 A CN201010222972 A CN 201010222972A CN 101879906 B CN101879906 B CN 101879906B
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circular nut
spring
hole
support
radially
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CN101879906A (en
Inventor
田国明
杜利清
姜晓东
杨庆龙
徐贵宝
朱正峰
曹建峰
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CRRC Brake System Co Ltd
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CSR Qishuyan Institute Co Ltd
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Abstract

The invention discloses a hanging device of a tight-lock coupler in the field of railway vehicles, which comprises an installation seat, a coupler yoke pin, a support, a supporting unit and a centering unit, wherein the support is hinged with the installation seat through the coupler yoke pin, the supporting unit is connected on the support, two sides of the support are respectively provided with or fixedly connected with a shell, the centering unit is arranged in the shell and comprises a cam, a pin shaft, a core rod and a spring, the core rod is axially and slidably arranged on the shell, the pin shaft is arranged at one end of the core rod, the cam is arranged on the pin shaft and is in rotating fit with the pin shaft, the spring is sleeved at the other end of the core rod, one end of the spring is abutted against a gland fixed on the shell, the other end of the spring is abutted against a stop on the core rod, a centering disc is fixed on the installation seat, the outer edge of the centering disc. The invention has the advantages of simple structure, small volume, reliable action, convenient vertical angle adjustment, independent disassembly and maintenance and convenient disassembly.

Description

The erecting by overhang of tight lock coupler
Technical field
The invention belongs to the guideway vehicle technology, especially for realizing tight lock coupler and the horizontal automatic centering of shock absorber and the device of vertical support function.
Background technology
Domestic existing express passenger train or city railway vehicle more and more use tight lock coupler and shock absorber, and closed jointing hook and shock absorber with also to solve after passenger car body links to each other coupler buffering device to neutralization support problem, be that the slow integral body of hook can keep level on the vertical direction and the Shaft alignment state on the horizontal direction under static state, and the slow integral body of hook can reach within the specific limits rotation on the vertical direction in the horizontal direction under external force, the slow automatically recovery level of integral body of hook and centering position after external force is cancelled.
Chinese patent literature is number for the document of CN2698670Y discloses a kind of tight-lock coupler damping device, and this device mainly comprises mount pad, draft key, support, two horizontal restoring spring axles, vertical centering spring cases and regulates pads.In the horizontal restoring spring axle pressure spring is arranged, one side of every horizontal restoring spring axle one end and mount pad is hinged, one side of the other end and support is hinged, support can horizontally rotate under external force, external force is cancelled after poppet and is resetted under the effect of horizontal restoring spring axle again, reset thereby drive energy disperser and hitch, namely realize automatic centering function; Vertical centering spring case can keep level by the elastic support coupler buffering device, when the vertical angle of coupler buffering device integral body need to be regulated, need releases clamp to regulate the vertical angle that pad changes coupler buffering device integral body by increase and decrease again with the binding bolt between the vertical centering spring case.The parts that this structure adopts are many, are articulated and connected many, and reliability is low, and volume is large; Vertical angular adjustment trouble, complex operation, labour intensity is large, wastes time and energy.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, the erecting by overhang of the tight lock coupler that volume is little.
In order to achieve the above object, technical scheme of the present invention is: a kind of erecting by overhang of tight lock coupler, comprise mount pad, draft key, support, support unit and centering unit, support is hinged by draft key and mount pad, support unit is installed on the support, the both sides of support are all with housing, centering unit is contained in the housing, centering unit comprises cam, bearing pin, plug and spring, wherein be contained on the housing to the plug axial sliding fit, bearing pin is installed in an end of plug, cam be contained on the bearing pin and with the bearing pin normal-running fit, spring housing is contained in the other end of plug, spring one end offsets with the gland that is fixed on the housing, and the backstop on the other end and the plug offsets, and is fixed with on the mount pad mid-game, outer rim to mid-game has concave surface, and cam is pressed in the concave surface of mid-game and form cam mechanism.
Described bearing pin is installed in the pin-and-hole of plug one end, cover limited location cover on the plug, and stop collar covers or part covers pin-and-hole, and stop collar is fixed on the plug by back-up ring, has groove on the plug, and the part of cam is positioned at groove.
In order to make centering more accurate, the line of centers of described two relative supports of concave surface to mid-game is symmetrical.
In order further to reduce volume, described spring is that some dish springs are combined.
For the ease of regulating vertical angle, described support unit comprises support spring, spring case, caging bolt, circular nut, adjusting bolt and base, described support spring is installed between the top of the inner roof wall of spring case and circular nut, the bottom of spring case has and radially connects slotted hole, the corresponding radially through hole I that has in circular nut top, described caging bolt inserts among the radially through hole I that radially connects slotted hole and circular nut of spring case, make between spring case and the circular nut and to form axially-displaceable and be dynamically connected, described base top has double-screw bolt, have radially slotted hole on the double-screw bolt, described circular nut has negative thread, circular nut is provided with at least two radially through hole II spaced apart, the double-screw bolt screw thread fit of the negative thread of circular nut and base, during the turn circular nut, the radially through hole II of circular nut can align with the radially slotted hole of double-screw bolt successively one by one, described adjusting bolt is inserted one of the circular nut radially radially slotted hole of through hole II and double-screw bolt, make the circumferential relative positioning of circular nut and base, described base bottom is connecting portion.
Radially through hole II on the described circular nut is three, and the interval differs 60 °.
To be threaded not easy rusting deadly in order making between nut and the base, to leave oil cabinet between the double-screw bolt top of the inner roof wall of described circular nut and base, the roof of circular nut has axial oil hole, axially the inner chamber of oil hole connection oil cabinet and spring case.
Nut all is housed on the head of described caging bolt and adjusting bolt.
Be connected with support for the ease of support unit, the connecting portion of described base has two connecting bores.
In order to make support unit more wear-resisting, the top of described spring case has wearing layer.
After adopting said structure, beneficial effect of the present invention is: since the both sides of support all with or be fixedly connected with housing, centering unit is contained in the housing, centering unit is rational in infrastructure, parts are few, so integral structure is simple, and volume is little, and rely on cam to be pressed on the concave surface to mid-game to realize automatic centering, reliable effect; Support unit is as a module in addition, and vertical angular adjustment is convenient, and convenient disassembly is safeguarded in dismounting separately.Over all Integration degree of the present invention is high, and bulk strength is high, and is simple to operate, time saving and energy saving.
Description of drawings
The present invention is further detailed explanation below in conjunction with embodiment that accompanying drawing provides.
Fig. 1 is the perspective view of the erecting by overhang of tight lock coupler of the present invention;
Fig. 2 is birds-eye view of the present invention;
Fig. 3 is that Fig. 2 is along the cutaway view of A-A direction;
Fig. 4 is the structural representation of the bracing or strutting arrangement among Fig. 1;
Fig. 5 is the cutaway view along the B-B direction of Fig. 4;
Fig. 6 is application state schematic perspective view of the present invention.
The specific embodiment
Such as Fig. 1,2, shown in 3, a kind of erecting by overhang of tight lock coupler, comprise mount pad 1, draft key 2, support 3, support unit 4 and centering unit 5, support 3 is hinged by draft key 2 and mount pad 1, support unit 4 is installed on the support 3, the both sides of support 3 all with or be fixedly connected with housing 3-1, centering unit 5 is contained in the housing 3-1, centering unit 5 comprises cam 5-1, bearing pin 5-2, plug 5-3 and spring 5-4, wherein be contained in to plug 5-3 axial sliding fit on the housing 3-1, bearing pin 5-2 is installed in the end of plug 5-3, cam 5-1 be contained in bearing pin 5-2 upper and with bearing pin 5-2 normal-running fit, spring 5-4 is sleeved on the other end of plug 5-3, spring 5-4 one end offsets with the gland 5-5 that is fixed on the housing 3-1, and the backstop 5-3-1 on the other end and the plug 5-3 offsets, and is fixed with on the mount pad 1 mid-game 6, outer rim to mid-game 6 has concave surface 6-1, and cam 5-1 is pressed in the concave surface 6-1 of mid-game 6 and form cam mechanism.
As shown in Figure 3, described bearing pin 5-2 is installed in the pin-and-hole 5-3-2 of plug 5-3 one end, the upper cover of plug 5-3 limited location cover 5-6, stop collar 5-6 covers or part covers pin-and-hole 5-3-2, stop collar 5-6 is fixed on the plug 5-3 by back-up ring 5-7, have groove 5-3-3 on the plug 5-3, the part of cam 5-1 is positioned at groove 5-3-3.
As shown in Figure 2, more accurate in order to make centering, the line of centers of described two relative supports 3 of concave surface 6-1 to mid-game 6 is symmetrical.
As shown in Figure 3, in order further to reduce volume, described spring 5-4 is that some dish springs are combined.
Such as Fig. 1,4, shown in 5, for the ease of regulating vertical angle, described support unit 4 comprises support spring 4-2, spring case 4-1, caging bolt 4-3, circular nut 4-4, adjusting bolt 4-5 and base 4-6, described support spring 4-2 is installed between the top of the inner roof wall of spring case 4-1 and circular nut 4-4, the bottom of spring case 4-1 has and radially connects slotted hole 4-1-1, the corresponding radially through hole I4-4-1 that has in circular nut 4-4 top, described caging bolt 4-3 inserts among the radially through hole I4-4-1 that radially connects slotted hole 4-1-1 and circular nut 4-4 of spring case 4-1, make between spring case 4-1 and the circular nut 4-4 and to form axially-displaceable and be dynamically connected, described base 4-6 top has double-screw bolt 4-6-1, have radially slotted hole 4-6-1-1 on the double-screw bolt 4-6-1, described circular nut 4-4 has negative thread 4-4-2, circular nut 4-4 is provided with at least two radially through hole II4-4-3 spaced apart, the double-screw bolt 4-6-1 screw thread fit of the negative thread 4-4-2 of circular nut 4-4 and base 4-6, during turn circular nut 4-4, the radially through hole II4-4-3 of circular nut 4-4 can align with the radially slotted hole 4-6-1-1 of double-screw bolt 4-6-1 successively one by one, described adjusting bolt 4-5 inserts one of circular nut 4-4, and radially through hole II4-4-3 and spiral shell are twisted the radially slotted hole 4-6-1-1 of 4-6-1, make circular nut 4-4 and the circumferential relative positioning of base 4-6, described base 4-6 bottom is connecting portion 4-6-2.
As shown in Figure 5, the radially through hole II4-4-3 on the described circular nut 4-4 is three, and the interval differs 60 °.
As shown in Figure 4, for make between nut and the base be threaded not easy rusting dead, leave oil cabinet 4-7 between the double-screw bolt 4-6-1 top of the inner roof wall of described circular nut 4-4 and base 4-6, the roof of circular nut 4-4 has axial oil hole 4-4-4, and axially oil hole 4-4-4 is communicated with the inner chamber of oil cabinet 4-7 and spring case 4-1.
As shown in Figure 4, on the head of described caging bolt 4-3 and adjusting bolt 4-5 nut 4-8 is housed all.
As shown in Figure 5, be connected with support for the ease of support unit, the connecting portion 4-6-2 of described base 4-6 has two connecting bore 4-6-2-1.
As shown in Figure 4, more wear-resisting in order to make support unit, the top of described spring case 4-1 has wearing layer 4-9.
Shown in Fig. 1,3,4,6, when the present invention used, coupler draft gear 7 was pressed on the support unit 4.Support 3 can horizontally rotate under external force, and after external force was cancelled, support 3 resetted under cam 5-1 and effect to the concave surface 6-1 of mid-game 6 again, resets thereby drive coupler draft gear 7, namely realizes automatic centering function; Coupler draft gear 7 integral body can turn an angle along vertical under external force, can recover original position under support unit 4 effects again after external force is removed.When needs are adjusted the vertical angle of coupler draft gear 7 integral body, only need adjusting bolt 4-5 is unloaded, and circular nut 4-4 is left-handed or dextrorotation NX60 °, make the relative base 4-6 of circular nut 4-4 rising certain distance, reinstalling also after coupler draft gear 7 whole angles reach requirement, fastening adjustment bolt 4-5 gets final product.

Claims (10)

1. the erecting by overhang of a tight lock coupler, comprise mount pad (1), draft key (2), support (3), support unit (4) and centering unit (5), support (3) is hinged by draft key (2) and mount pad (1), support unit (4) is installed on the support (3), it is characterized in that:
The both sides of a, support (3) are all with housing (3-1), and centering unit (5) is contained in the housing (3-1),
B, centering unit (5) comprises cam (5-1), bearing pin (5-2), plug (5-3) and spring (5-4), wherein be contained on the housing (3-1) to plug (5-3) axial sliding fit, bearing pin (5-2) is installed in an end of plug (5-3), cam (5-1) be contained in bearing pin (5-2) upper and with bearing pin (5-2) normal-running fit, spring (5-4) is sleeved on the other end of plug (5-3), spring (5-4) end offsets with the gland (5-5) that is fixed on the housing (3-1), backstop (5-3-1) on the other end and the plug (5-3) offsets
Be fixed with mid-game (6) on c, the mount pad (1), the outer rim of mid-game (6) is had concave surface (6-1), cam (5-1) is pressed in the concave surface (6-1) of mid-game (6) and form cam mechanism.
2. the erecting by overhang of tight lock coupler according to claim 1, it is characterized in that: described bearing pin (5-2) is installed in the pin-and-hole (5-3-2) of plug (5-3) end, the upper cover of plug (5-3) limited location cover (5-6), stop collar (5-6) covers or part covers pin-and-hole (5-3-2), stop collar (5-6) is fixed on the plug (5-3) by back-up ring (5-7), have groove (5-3-3) on the plug (5-3), the part of cam (5-1) is positioned at groove (5-3-3).
3. the erecting by overhang of tight lock coupler according to claim 1 is characterized in that: described two concave surfaces (6-1) to mid-game (6) the relatively line of centers of support (3) are symmetrical.
4. the erecting by overhang of tight lock coupler according to claim 1, it is characterized in that: described spring (5-4) is that some dish springs are combined.
5. according to claim 1 and 2 or the erecting by overhang of 3 or 4 described tight lock couplers, it is characterized in that: described support unit (4) comprises support spring (4-2), spring case (4-1), caging bolt (4-3), circular nut (4-4), adjusting bolt (4-5) and base (4-6), described support spring (4-2) is installed between the top of the inner roof wall of spring case (4-1) and circular nut (4-4), the bottom of spring case (4-1) has and radially connects slotted hole (4-1-1), corresponding have radially through hole I (4-4-1) in circular nut (4-4) top, among the radially perforation slotted hole (4-1-1) of described caging bolt (4-3) insertion spring case (4-1) and the radially through hole I (4-4-1) of circular nut (4-4), make between spring case (4-1) and the circular nut (4-4) and to form axially-displaceable and be dynamically connected, described base (4-6) top has double-screw bolt (4-6-1), have radially slotted hole (4-6-1-1) on the double-screw bolt (4-6-1), described circular nut (4-4) has negative thread (4-4-2), circular nut (4-4) is provided with at least two radially through hole II (4-4-3) spaced apart, double-screw bolt (4-6-1) screw thread fit of the negative thread (4-4-2) of circular nut (4-4) and base (4-6), during turn circular nut (4-4), the radially through hole II (4-4-3) of circular nut (4-4) can align with the radially slotted hole (4-6-1-1) of double-screw bolt (4-6-1) successively one by one, described adjusting bolt (4-5) is inserted one of circular nut (4-4) the radially radially slotted hole (4-6-1-1) of through hole II (4-4-3) and double-screw bolt (4-6-1), make the circumferential relative positioning of circular nut (4-4) and base (4-6), described base (4-6) bottom is connecting portion (4-6-2).
6. the erecting by overhang of tight lock coupler according to claim 5, it is characterized in that: the radially through hole II (4-4-3) on the described circular nut (4-4) is three, and the interval differs 60 °.
7. the erecting by overhang of tight lock coupler according to claim 5, it is characterized in that: leave oil cabinet (4-7) between double-screw bolt (4-6-1) top of the inner roof wall of described circular nut (4-4) and base (4-6), the roof of circular nut (4-4) has axial oil hole (4-4-4), and axially oil hole (4-4-4) is communicated with the inner chamber of oil cabinet (4-7) and spring case (4-1).
8. the erecting by overhang of tight lock coupler according to claim 5 is characterized in that: on the head of described caging bolt (4-3) and adjusting bolt (4-5) nut (4-8) is housed all.
9. the erecting by overhang of tight lock coupler according to claim 5, it is characterized in that: the connecting portion (4-6-2) of described base (4-6) has two connecting bores (4-6-2-1).
10. the erecting by overhang of tight lock coupler according to claim 5, it is characterized in that: the top of described spring case (4-1) has wearing layer (4-9).
CN201010222972.7A 2010-06-29 2010-06-29 Hanging device for tight-lock coupler Active CN101879906B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202624260U (en) * 2012-06-13 2012-12-26 青岛四方车辆研究所有限公司 Front installation hanging system with overload protection function
CN106696983B (en) * 2017-01-19 2019-04-26 中车四方车辆有限公司 A kind of vertically rotating hitch and rail-road car
CN109131416A (en) * 2018-08-22 2019-01-04 中车南京浦镇车辆有限公司 A kind of hitch mounting structure
CN110304097B (en) * 2019-07-25 2020-05-05 中车青岛四方车辆研究所有限公司 Buffer device, coupler and buffer device and rail train
CN110525473B (en) * 2019-09-30 2024-02-13 中车青岛四方车辆研究所有限公司 Hanging device for coupler

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2698670Y (en) * 2004-05-09 2005-05-11 中国北车集团四方车辆研究所 Tight-lock coupler damping device
CN2880620Y (en) * 2006-01-23 2007-03-21 中国南车集团戚墅堰机车车辆工艺研究所 Joint type tracting buffer connecting device of railway traffic vehicle
CN101475012A (en) * 2009-01-23 2009-07-08 齐齐哈尔轨道交通装备有限责任公司 Coupler, slave plate and coupler buffering mechanism
CN201792867U (en) * 2010-06-29 2011-04-13 南车戚墅堰机车车辆工艺研究所有限公司 Tight-lock coupler hanging device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4673333B2 (en) * 2007-04-03 2011-04-20 株式会社日本製鋼所 Railway vehicle coupling device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2698670Y (en) * 2004-05-09 2005-05-11 中国北车集团四方车辆研究所 Tight-lock coupler damping device
CN2880620Y (en) * 2006-01-23 2007-03-21 中国南车集团戚墅堰机车车辆工艺研究所 Joint type tracting buffer connecting device of railway traffic vehicle
CN101475012A (en) * 2009-01-23 2009-07-08 齐齐哈尔轨道交通装备有限责任公司 Coupler, slave plate and coupler buffering mechanism
CN201792867U (en) * 2010-06-29 2011-04-13 南车戚墅堰机车车辆工艺研究所有限公司 Tight-lock coupler hanging device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2008-254542A 2008.10.23

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