CN116198552B - A method for strengthening the stress of the connection structure of the central traction device of the bogie - Google Patents

A method for strengthening the stress of the connection structure of the central traction device of the bogie Download PDF

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Publication number
CN116198552B
CN116198552B CN202310329055.6A CN202310329055A CN116198552B CN 116198552 B CN116198552 B CN 116198552B CN 202310329055 A CN202310329055 A CN 202310329055A CN 116198552 B CN116198552 B CN 116198552B
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traction
bolt
center pin
notch
stress
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CN116198552A (en
Inventor
高发雄
邹敏佳
罗燕
张维亨
李鹏
霍艳霞
刘欢
肖鹏
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Zhuzhou Times New Material Technology Co Ltd
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Zhuzhou Times New Material Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/16—Centre bearings or other swivel connections between underframes and bolsters or bogies
    • B61F5/18—King-bolts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/20—Details; Accessories
    • B61G9/24—Linkages between draw-bar and framework
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

一种强化转向架中心牵引装置的连接结构受力的方法，是在两个相互作用的连接件之间设置具有紧固件并由紧固件提供卡合支持的卡合结构，在卡合结构中的两个连接件之间设置一个中间件，使两个连接件互相施加的力通过与中间件之间相互施加压力来实现。上述方法包括在中心销与中心销套之间设置卡合结构；还包括在牵引座与牵引拉杆之间设置卡合结构。其优点在于：中心牵引装置的受力连接结构不会松动，不会发出异响或导致连接失效；结构简洁，集成性强。

A method for strengthening the stress of the connection structure of the center traction device of a bogie is to set a clamping structure with a fastener and provided with clamping support by the fastener between two interacting connecting parts, and set an intermediate part between the two connecting parts in the clamping structure, so that the force applied to each other by the two connecting parts is realized by applying pressure to each other with the intermediate part. The above method includes setting a clamping structure between the center pin and the center pin sleeve; and also includes setting a clamping structure between the traction seat and the traction rod. Its advantages are: the stress-bearing connection structure of the center traction device will not loosen, will not make abnormal noise or cause connection failure; the structure is simple and highly integrated.

Description

Method for strengthening stress of connecting structure of bogie center traction device
Technical Field
The invention relates to a method for strengthening stress of a connecting structure of a bogie center traction device, and belongs to the technical field of bogie traction of trains.
Background
The central traction device is arranged between the railway vehicle body and the bogie and is used for connecting the vehicle body and the bogie, transmitting traction force and braking force and buffering impact and vibration caused by wheels. The central traction device comprises a traction pull rod, a central traction spherical hinge, a traction seat, a central spherical hinge and a central pin. The center pin is a connecting piece for connecting the vehicle body and the center traction device, and transmits traction force and braking force. The center spherical hinge is arranged in the traction seat, connects the traction seat and the center pin, and transmits traction force and braking force. The traction pull rod spherical hinge is arranged in the traction pull rod and is connected with the traction seat and the bogie.
The general structure of the center traction device is that, as shown in fig. 12 and referring to fig. 5, the center spherical hinge 2 is installed and fixed in the traction seat, the center spherical hinge 2 has an outer sleeve and a center pin sleeve 203, a vulcanized rubber layer is arranged between the outer sleeve and the center pin sleeve 203, and the center spherical hinge 2 is fixed in the traction seat 1, and the outer sleeve 201 is fixed in the traction seat 1. The sleeve hole of the center pin sleeve 203 is a taper sleeve hole with a large upper part and a small lower part, the center pin 4 inserted into the center pin sleeve 203 is also a taper body matched with the taper sleeve hole, the lower end part of the center pin 4 is provided with a threaded hole 5 for connecting a bolt, and when a fastener such as a bolt pulls down the center pin 4, the downward movement of the center pin 4 is limited by the taper sleeve hole. The upper end of the center pin 4 is inserted into the carriage body at the bottom of the carriage of the train and connected with the carriage body, and when the carriage is assembled and lifted, the bogie can be lifted through the center pin 4. The central traction device is connected with the bogie through traction pull rods 9, and the traction pull rods 9 are reversely arranged in a Z shape on the left side and the right side of the central traction device.
The central spherical hinge is connected with the traction seat and the central pin, and the central pin sleeve of the central spherical hinge is interacted with the central pin. When the center pin transmits traction force and braking force to the traction seat, the center pin sleeve applies force in the horizontal direction to the center pin. However, when the train passes through the curve, the angle between the bogie and the train changes, that is, if technical measures are not taken, the center pin rotates in the center pin bush, and the rotation can cause abrasion between the center pin and the center pin bush, so that a larger and larger gap is formed between the center pin and the center pin bush, the vibration reduction effect of the center spherical hinge is gradually lost, and abnormal sound is generated during running vibration and starting and braking.
To solve this problem, conventionally, as described above, the sleeve hole of the center pin bush is a tapered sleeve hole having a large upper portion and a small lower portion, and the center pin inserted into the center pin bush is also a tapered body fitted with the tapered sleeve hole, and when the center pin is pulled down by a fastener such as a bolt, the downward movement of the center pin is restricted by the tapered sleeve hole. As the fastener is further tightened down, the center pin will be tightly sleeved on the inner wall of the tapered sleeve hole of the center pin sleeve, the rotation of the center pin will be subjected to strong frictional resistance, and the center pin sleeve will be twisted together with the center pin against the rigidity of the vulcanized rubber layer. However, when the train runs on a curve, the rotation force of the center pin is stronger, the rigidity of the vulcanized rubber layer is also great, and along with the extension of the service time, the center pin can gradually overcome the friction resistance to rotate in the sleeve hole of the center pin sleeve.
The central traction device is connected with the bogie through a traction pull rod, and one end of the pull rod is connected with the traction seat through a traction spherical hinge. As shown in fig. 11, the conventional connection manner between the traction spherical hinge 8 and the traction seat 1 is to respectively set up an upper stress surface and a lower stress surface 11 on the left side and the right side of the traction seat 1, set up threaded holes 5 on the stress surfaces 11, respectively set up bolt holes on the upper end and the lower end of a mandrel 801 of the traction spherical hinge 8, respectively lean against the upper stress surface and the lower stress surface on the upper end and the lower end of the mandrel, and respectively fix the upper end and the lower end of the mandrel 801 on the two stress surfaces through a second bolt 10. The connection structure between the traction rod 9 and the traction seat 1 determines:
When the bogie transmits the traction force to the traction seat through the traction pull rod, the bearing surface bears the positive pressure, and when the bogie transmits the braking force to the traction seat through the traction pull rod, the fixing bolt bears the positive pressure.
Or the fixing bolt bears the positive pressure when the bogie transmits traction force to the traction seat through the traction pull rod, and the bearing surface bears the positive pressure when the bogie transmits braking force to the traction seat through the traction pull rod.
It is well known that the biggest hidden trouble of bolt fixation is that the bolt is gradually loosened under long-term intermittent stress and vibration. The mandrel is fixedly connected with the central pin seat through the bolt, so that the phenomenon of loosening the bolt occurs in practical application, and the phenomenon is found and treated during overhauling. The damage of loosening of the bolt is likely to cause the broken wire of the bolt to fall off or directly break, and meanwhile, abnormal sound is also necessarily generated during operation.
In summary, whether looseness is generated between the center pin and the center pin bush or between the traction spherical hinge and the center pin seat due to bolt connection, the arrangement of the stress connection structure of the center traction device serving as the traction connection device between the center pin and the bogie is unreasonable, and the stress connection structure is not compact and has abnormal sound after being used for a period of time.
By searching, the following patent documents close to the present application are obtained:
1. The application number is 202110641851.4, the name is a central traction device and a splitting method thereof.
2. The application number is 200620036147.7, and the name is a locomotive traction device with a center pin and a Z-shaped pull rod.
Both of the above patent documents disclose that the fastening between the center pin and the center pin bush depends on bolts.
The first document solves the problem of preventing the loosening of the bolt by providing a strong axial tension force for the center pin by screwing the locking bolt into the conical surface of the inner sleeve 21, axially locking the center pin 3 and the center traction spherical hinge 2, and effectively preventing the loosening of the locking bolt 4 by arranging the stop block 5. However, the rotation between the center pin and the center pin bush (inner bush) is achieved by "the screwing of the locking bolt provides a strong axial tension force for the center pin to be pressed into the conical surface of the inner bush 21", that is, the center pin and the center pin bush (inner bush) are only realized by the friction resistance between the center pin and the center pin bush, the center pin does not rotate in the center pin bush, no blocking structure is arranged between the center pin and the center pin bush, and the center pin cannot be necessarily prevented from rotating in the center pin bush after long-term use of the friction resistance, so that the problem of the application cannot be solved.
The second document does not disclose a locking design of the bolt, and thus fails to solve the problem addressed by the present application.
Disclosure of Invention
The invention aims to solve the technical problem of how to solve the problem that a stressed connection structure of a central traction device is easy to loosen in a long-term use process.
Aiming at the problems, the technical scheme provided by the invention is as follows:
A method for reinforcing the stress of the connecting structure of central traction unit of bogie features that a clamping structure with fastening elements is arranged between two interactive connecting parts and the clamping support is provided by said fastening elements, and a middle part is arranged between two connecting parts in said clamping structure to make the force exerted by two connecting parts be realized by the pressure exerted by said middle part.
The method further comprises the step of arranging a clamping structure between the center pin and the center pin sleeve, and the step of arranging a clamping structure between the traction seat and the traction pull rod.
Further, set up the block structure between center pin and center pin bush, be the lower extreme of downwardly extending center pin bush to set up the pin bush block breach that both sides are to leading to in the lower extreme, extend the lower extreme of center pin downwards, and set up the center pin block breach that both sides are to leading to in the lower extreme and correspond with pin bush block breach, the middleware is the block, fills the block and presses in pin bush block breach and center pin block breach, when making the center pin rotate, the lateral wall of center pin block breach applys along direction of rotation's pressure to the block, and the block applys along direction of rotation's pressure to the lateral wall of pin bush block breach.
The method is that a threaded hole is arranged at the lower end of the center pin in the axial direction, a bolt hole is arranged on the clamping block, the fastening piece is a first bolt, and the first bolt is used for pressing and fastening the clamping block in the pin sleeve clamping notch and the center pin clamping notch through the bolt hole and the threaded hole.
Further, the pin bush clamping notch and the center pin clamping notch are arranged to be trapezoid notches with the opening width being larger than the bottom width, the clamping block is arranged to be trapezoid blocks with the cross sections being trapezoid and corresponding to the trapezoid notches, and the clamping block can be pressed more tightly along with the fastening of the first bolt when being pressed into the pin bush clamping notch and the center pin clamping notch.
Further, an elastic expansion piece is arranged for the first bolt for damping the first bolt and applying a constant axial force to the first bolt.
Further, the elastic expansion part is arranged for the first bolt, the bottom end of the clamping block is downwards extended out of the bottom end surface of the traction seat, the bottom end of the clamping block is provided with a supporting plate fixed with the clamping block, the periphery of the supporting plate is provided with an annular rubber ring, and the annular rubber ring is preloaded between the supporting plate and the traction seat when the clamping block is pulled upwards to the center pin through the first bolt.
The traction device is characterized in that a clamping structure is arranged between the traction seat and the traction pull rod, a transverse concave traction seat clamping notch is respectively arranged on the upper side and the lower side of one side of the traction seat, the middle piece is a traction spherical hinge, one end of the traction pull rod is sleeved on an outer sleeve of the traction spherical hinge, and the upper end and the lower end of a mandrel of the traction spherical hinge are respectively filled and pressed in the upper traction seat clamping notch and the lower traction seat clamping notch and are fastened by a fastening piece.
Further, the clamping notch of the traction seat is set to be a trapezoid notch with the opening width being larger than the bottom width, the upper end and the lower end of the mandrel are processed to be clamping blocks corresponding to the clamping notch of the traction seat, the middle piece is a second bolt, a bolt hole is formed in the end portion of the mandrel, a corresponding threaded hole is formed in the bottom of the clamping notch of the traction seat, and the end portion of the mandrel is tightly pressed in the clamping notch of the traction seat by the second bolt.
Advantageous effects
1. The stress connection structure of the central traction device cannot loosen, and abnormal sound cannot be generated or connection failure cannot be caused;
2. when the train is assembled or overhauled and lifted, the tearing damage to the vulcanized rubber layer of the central spherical hinge is avoided;
3. The structure is simple, and the integration is strong.
Drawings
FIG. 1 is a schematic perspective view of a fifth wheel according to an embodiment;
fig. 2 is a schematic perspective view of the central spherical hinge according to the first embodiment;
FIG. 3 is a schematic perspective view of a center pin according to an embodiment;
fig. 4 is a schematic perspective view of the engaging block according to the first embodiment;
FIG. 5 is a schematic cross-sectional view of a fifth wheel of the second embodiment;
Fig. 6 is a schematic perspective view of a fifth wheel of the second embodiment;
Fig. 7 is a schematic perspective view of a fastening block and a supporting plate thereof according to a second embodiment;
Fig. 8 is a schematic perspective view of a fifth wheel of the third embodiment;
fig. 9 is a schematic perspective view of a fifth wheel of the third embodiment, showing a fifth wheel engagement notch;
Fig. 10 is a schematic perspective view of a traction ball hinge according to a third embodiment;
FIG. 11 is a schematic perspective view of a prior art fifth wheel;
Fig. 12 is a partial schematic view of a prior art fifth wheel.
In the figure, 1, a traction seat, 101, a traction seat clamping notch, 2, a central spherical hinge, 201, an outer sleeve, 202, a vulcanized rubber layer, 203, a central pin sleeve, 2031, a pin sleeve clamping notch, 3, a clamping block, 301, a supporting plate, 3011, an annular rubber ring, 4, a central pin, 401, a central pin clamping notch, 5, a threaded hole, 6, a bolt hole, 7, a first bolt, 8, a traction spherical hinge, 801, a mandrel, 9, a traction pull rod, 10, a second bolt, 11 and a stress surface.
Detailed Description
For the purpose of facilitating the understanding of the present application, the general structural form of the central traction device related to the present application will be briefly described as follows:
example 1
As shown in fig. 1-4, a method for strengthening the stress of a connecting structure of a bogie center traction device is to provide a clamping structure with a fastener between two interacting connecting pieces and provide clamping support by the fastener, and provide an intermediate piece between the two connecting pieces in the clamping structure, so that the force applied by the two connecting pieces to each other is realized by applying pressure to the intermediate piece. Therefore, the stress is not high depending on the fastening piece of a screw bolt and a bolt screw, but depends on the intermediate piece, and the intermediate piece can be a part which can bear strong pulling and pressing force, so that abnormal sound or connection failure caused by easy loosening and releasing of the fastening piece in the long-term use process is avoided.
The method includes providing a snap-fit arrangement between the center pin 4 and the center pin housing 203.
The concrete measures are that the lower end of the center pin sleeve 203 is extended downwards, pin sleeve clamping notches 2031 which are opposite to each other are arranged at the lower end, the lower end of the center pin 4 is extended downwards, and center pin clamping notches 401 which are opposite to each other and correspond to the pin sleeve clamping notches 2031 are arranged at the lower end. The intermediate member is the engaging block 3, and the engaging block 3 is pressed into the pin bush engaging notch 2031 and the center pin engaging notch 401, so that when the center pin 4 is rotated, the side wall of the center pin engaging notch 401 applies pressure in the rotation direction to the engaging block 3, and the engaging block 3 applies pressure in the rotation direction to the side wall of the pin bush engaging notch 2031.
A threaded hole 5 is axially formed in the lower end of the center pin 4, a bolt hole 6 is formed in the locking block 3, the fastener is a first bolt 7, and the locking block 3 is pressed and fixed in the pin sleeve locking notch 2031 and the center pin locking notch 401 by the first bolt 7 through the bolt hole 6 and the threaded hole 5.
The pin bush engaging notch 2031 and the center pin engaging notch 401 are provided as trapezoid notches with a larger opening width than a bottom width, and the engaging block 3 is provided as a trapezoid block with a trapezoid cross section corresponding to the trapezoid notch, so that the center pin bush 203 and the center pin 4 can be fixed into a whole which is not easy to loosen through the bolt 7 and the engaging block 3 as the bolt 7 is tightened more and more when the engaging block 3 is pressed into the pin bush engaging notch 2031 and the center pin engaging notch 401.
Example two
As shown in fig. 5-7, this embodiment is a further improvement of the first embodiment, in which an elastic expansion member is provided for the first bolt 7, for damping vibration of the first bolt 7 and applying a constant axial force to the first bolt 7, so as to eliminate the influence of train operation vibration on the tightness of the first bolt 7 as much as possible, and simultaneously subject the first bolt 7 to a constant axial force, that is, to keep the screw teeth of the first bolt 7 and the screw teeth of the bolt hole always in a state of being pressed and having friction resistance, so as to prevent the first bolt 7 from unscrewing and loosening.
The elastic expansion part is arranged for the first bolt 7, the bottom end of the clamping block 3 is downwards extended out of the bottom end face of the traction seat 1, the bottom end of the clamping block 3 is provided with the supporting plate 301 fixed with the clamping block 3, the periphery of the supporting plate 301 is provided with the annular rubber ring 3011, and the annular rubber ring 3011 is preloaded between the supporting plate 301 and the traction seat 1 while the clamping block 3 is pulled upwards towards the center pin 4 through the first bolt 7. This design, besides preventing the bolt one 7 from backing up loose, can also play the following two roles:
firstly, the bottom of the installation space of the center spherical hinge 2 can be plugged to play a role in dust prevention, and secondly, when the train is assembled or overhauled and lifted, the bogie can be supported upwards mainly by the supporting plate 301 and the annular rubber ring 3011 thereof, so that the center pin 4 is prevented from transitionally pulling the center pin sleeve 203 to tear the vulcanized rubber layer 202.
Example III
As shown in fig. 8-10, the method for strengthening the stress of the connecting structure of the central traction device of the bogie further comprises the step of arranging a clamping structure between the traction seat 1 and the traction pull rod 9.
Specifically, a transverse concave traction seat clamping notch 101 is respectively arranged on the upper and lower sides of one side of the traction seat 1, the middle piece is a traction spherical hinge 8, one end of a traction pull rod 9 is sleeved on the outer sleeve of the traction spherical hinge 8, and the upper and lower ends of a mandrel 801 of the traction spherical hinge 8 are respectively filled and pressed in the upper and lower traction seat clamping notches 101 and are fastened by a fastening piece.
Further, the fifth wheel clamping notch 101 is set to be a trapezoid notch with the opening width larger than the bottom width, the upper end and the lower end of the mandrel 801 are machined to be clamping blocks corresponding to the fifth wheel clamping notch 101, the middle piece is a second bolt 10, a bolt hole is formed in the end of the mandrel 801, a corresponding threaded hole is formed in the bottom of the fifth wheel clamping notch 101, and the end of the mandrel 801 is tightly pressed in the fifth wheel clamping notch 101 by the second bolt 10.
In this embodiment, the second bolt 10 as the fastener only needs to laterally limit the end of the mandrel 801 in the fifth wheel engagement notch 101, and the second bolt 10 is screwed in by utilizing the configuration of the fifth wheel engagement notch 101 with a trapezoid notch having a larger mouth width than the bottom width and a trapezoid block at the end of the mandrel 801, so that the end of the mandrel 801 is pressed more and more tightly into the fifth wheel engagement notch 101 when the second bolt 10 is screwed in, and the axial force of back pressing to the second bolt 10 is maintained, so that the second bolt 10 is not easy to loosen. In this way, the traction ball joint 8 directly applies traction pressure and braking pressure to the traction seat 1 in the traction seat clamping notch 101, instead of applying force to the second bolt 10, the second bolt 10 is more beneficial to maintaining the pre-tightening state without loosening when not affected by strong intermittent force. Therefore, the present embodiment can tightly control the spindle end within the fifth wheel engagement notch 101.
The above embodiments are only for the purpose of more clearly describing the present invention and should not be construed as limiting the scope of the present invention, and any equivalent modifications should be construed as falling within the scope of the present invention.

Claims (8)

1.一种强化转向架中心牵引装置的连接结构受力的方法，其特征在于，是在两个相互作用的连接件之间设置具有紧固件并由紧固件提供卡合支持的卡合结构，在卡合结构中的两个连接件之间设置一个中间件，使两个连接件互相施加的力通过与中间件之间相互施加压力来实现；包括在中心销（4）与中心销套（203）之间设置卡合结构；向下延长中心销套（203）的下端，并在下端设置两侧对通的销套卡合缺口（2031），将中心销（4）的下端向下延长，并在下端设置两侧对通的与销套卡合缺口（2031）对应的中心销卡合缺口（401），所述中间件为卡合块（3），将卡合块（3）填压在销套卡合缺口（2031）和中心销卡合缺口（401）内，使中心销（4）转动时，中心销卡合缺口（401）的侧壁向卡合块（3）施加沿转动方向的压力，卡合块（3）向销套卡合缺口（2031）的侧壁施加沿转动方向的压力。1. A method for strengthening the stress of the connection structure of the central traction device of a bogie, characterized in that a clamping structure having a fastener and provided with clamping support by the fastener is provided between two interacting connecting parts, an intermediate part is provided between the two connecting parts in the clamping structure, so that the force applied to each other by the two connecting parts is realized by applying pressure to each other with the intermediate part; the method comprises providing a clamping structure between a center pin (4) and a center pin sleeve (203); extending the lower end of the center pin sleeve (203) downward, and providing a pin sleeve clamping notch (203) with two sides communicating with each other at the lower end; 031), the lower end of the center pin (4) is extended downward, and a center pin engaging notch (401) is provided at the lower end, which is communicated on both sides and corresponds to the pin sleeve engaging notch (2031), the intermediate piece is a locking block (3), and the locking block (3) is filled in the pin sleeve engaging notch (2031) and the center pin engaging notch (401), so that when the center pin (4) rotates, the side wall of the center pin engaging notch (401) applies pressure along the rotation direction to the locking block (3), and the locking block (3) applies pressure along the rotation direction to the side wall of the pin sleeve engaging notch (2031). 2.根据权利要求1所述的强化转向架中心牵引装置的连接结构受力的方法，其特征在于，还包括在牵引座（1）与牵引拉杆（9）之间设置卡合结构。2. The method for strengthening the stress of the connection structure of the central traction device of the bogie according to claim 1 is characterized by further comprising providing a locking structure between the traction seat (1) and the traction rod (9). 3.根据权利要求1所述的强化转向架中心牵引装置的连接结构受力的方法，其特征在于，在中心销（4）下端轴向设置螺纹孔（5），在卡合块（3）上设置螺栓孔（6），所述紧固件为螺栓一（7），由螺栓一（7）通过螺栓孔（6）和螺纹孔（5）将卡合块（3）压紧固定在销套卡合缺口（2031）和中心销卡合缺口（401）内。3. The method for strengthening the stress of the connection structure of the bogie center traction device according to claim 1 is characterized in that a threaded hole (5) is axially arranged at the lower end of the center pin (4), a bolt hole (6) is arranged on the locking block (3), and the fastener is a bolt one (7), and the bolt one (7) passes through the bolt hole (6) and the threaded hole (5) to press and fix the locking block (3) in the pin sleeve locking notch (2031) and the center pin locking notch (401). 4.根据权利要求3所述的强化转向架中心牵引装置的连接结构受力的方法，其特征在于，将销套卡合缺口（2031）和中心销卡合缺口（401）设置为口部宽度大于底部宽度的梯形缺口，将卡合块（3）设为截面为梯形的与梯形缺口对应的梯形块，使卡合块（3）压入销套卡合缺口（2031）和中心销卡合缺口（401）时能够随着螺栓一（7）的紧固越压越紧。4. The method for strengthening the stress of the connection structure of the bogie center traction device according to claim 3 is characterized in that the pin sleeve engaging notch (2031) and the center pin engaging notch (401) are set as trapezoidal notches with a mouth width greater than a bottom width, and the engaging block (3) is set as a trapezoidal block with a trapezoidal cross-section corresponding to the trapezoidal notch, so that when the engaging block (3) is pressed into the pin sleeve engaging notch (2031) and the center pin engaging notch (401), it can be pressed tighter and tighter as the bolt 1 (7) is tightened. 5.根据权利要求3所述的强化转向架中心牵引装置的连接结构受力的方法，其特征在于，针对螺栓一（7）设置弹性胀压件，用于对螺栓一（7）减振和对螺栓一（7）施加恒久的轴向力。5. The method for strengthening the stress of the connection structure of the bogie center traction device according to claim 3 is characterized in that an elastic expansion member is provided for the bolt one (7) to reduce the vibration of the bolt one (7) and apply a permanent axial force to the bolt one (7). 6.根据权利要求5所述的强化转向架中心牵引装置的连接结构受力的方法，其特征在于，所述针对螺栓一（7）设置弹性胀压件，是将卡合块（3）底端向下延生出牵引座（1）底端面外，在卡合块（3）底端设置与卡合块（3）固定的托板（301），在托板（301）外周设置环形橡胶圈（3011），通过螺栓一（7）将卡合块（3）朝上向中心销（4）拉近的同时使环形橡胶圈（3011）预压在托板（301）与牵引座（1）之间。6. The method for strengthening the stress of the connection structure of the bogie center traction device according to claim 5 is characterized in that the elastic expansion member is arranged for the bolt one (7), and the bottom end of the locking block (3) is extended downwardly outside the bottom end surface of the traction seat (1), and a support plate (301) fixed to the locking block (3) is arranged at the bottom end of the locking block (3), and an annular rubber ring (3011) is arranged on the outer periphery of the support plate (301), and the locking block (3) is pulled upward toward the center pin (4) by the bolt one (7), and at the same time, the annular rubber ring (3011) is pre-pressed between the support plate (301) and the traction seat (1). 7.根据权利要求2所述的强化转向架中心牵引装置的连接结构受力的方法，其特征在于，是在牵引座（1）一侧的上下分别设置横向凹陷的牵引座卡合缺口（101），所述中间件为牵引球铰（8），所述牵引拉杆（9）的一端套装在牵引球铰（8）的外套上，牵引球铰（8）的芯轴（801）的上下两端分别填压在上下两个牵引座卡合缺口（101）内，并由紧固件紧固。7. The method for strengthening the stress of the connection structure of the central traction device of the bogie according to claim 2 is characterized in that transversely recessed traction seat engagement notches (101) are respectively provided on the upper and lower sides of one side of the traction seat (1), the intermediate piece is a traction ball joint (8), one end of the traction rod (9) is sleeved on the outer sleeve of the traction ball joint (8), and the upper and lower ends of the core shaft (801) of the traction ball joint (8) are respectively filled in the upper and lower traction seat engagement notches (101) and fastened by fasteners. 8.根据权利要求7所述的强化转向架中心牵引装置的连接结构受力的方法，其特征在于，将牵引座卡合缺口（101）设置为口部宽度大于底部宽度的梯形缺口，将芯轴（801）的上下两端加工成与牵引座卡合缺口（101）相应的卡合块,所述中间件为螺栓二（10），在芯轴（801）端部设置螺栓孔,在牵引座卡合缺口（101）底部设置相应的螺纹孔，由螺栓二（10）将芯轴（801）端部紧压在牵引座卡合缺口（101）内。8. The method for strengthening the stress of the connection structure of the central traction device of the bogie according to claim 7 is characterized in that the traction seat engagement notch (101) is set as a trapezoidal notch with a mouth width greater than a bottom width, and the upper and lower ends of the core shaft (801) are processed into engagement blocks corresponding to the traction seat engagement notch (101), and the intermediate piece is a second bolt (10), a bolt hole is set at the end of the core shaft (801), and a corresponding threaded hole is set at the bottom of the traction seat engagement notch (101), and the second bolt (10) presses the end of the core shaft (801) into the traction seat engagement notch (101).
CN202310329055.6A 2023-03-30 2023-03-30 A method for strengthening the stress of the connection structure of the central traction device of the bogie Active CN116198552B (en)

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Publication number Priority date Publication date Assignee Title
CN110723164A (en) * 2019-09-05 2020-01-24 中车长春轨道客车股份有限公司 Compact type traction device and bogie with same
CN113401158A (en) * 2021-06-09 2021-09-17 株洲时代新材料科技股份有限公司 Central traction device and splitting method thereof

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CN205601849U (en) * 2016-05-12 2016-09-28 中车唐山机车车辆有限公司 Non - power truck

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723164A (en) * 2019-09-05 2020-01-24 中车长春轨道客车股份有限公司 Compact type traction device and bogie with same
CN113401158A (en) * 2021-06-09 2021-09-17 株洲时代新材料科技股份有限公司 Central traction device and splitting method thereof

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