CN114802336B - Locking device of telescopic coupler - Google Patents
Locking device of telescopic coupler Download PDFInfo
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- CN114802336B CN114802336B CN202210614567.2A CN202210614567A CN114802336B CN 114802336 B CN114802336 B CN 114802336B CN 202210614567 A CN202210614567 A CN 202210614567A CN 114802336 B CN114802336 B CN 114802336B
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- locking
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- traction rod
- lock
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- 230000000712 assembly Effects 0.000 claims abstract description 14
- 238000000429 assembly Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
- B61G7/10—Mounting of the couplings on the vehicle
- B61G7/12—Adjustable coupling bars, e.g. for centralisation purposes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention provides a telescopic coupler locking device, comprising: the housing may be connected to one end of the telescopic coupler; traction lever: can be connected to the other end of the telescopic coupler, and is provided with at least one locking groove on the side wall; telescoping assembly: the fixed end is connected and arranged in the shell, and the telescopic end is connected with the traction rod; a locking ring: the sleeve is sleeved on the inner side of the opening end of the shell; at least one set of lock assemblies: the locking ring is arranged on the locking ring and can stretch towards the radial direction of the shell; the number of the locking grooves corresponds to the number of the locking block assemblies, and when the traction rod is retracted into the shell, the locking block assemblies can be inserted into the locking grooves to limit the extension movement of the traction rod. The locking device adopts the integrated design of the telescopic locking device and the locking ring, so that the complexity that a plurality of parts of the same telescopic device adopt locking mechanisms respectively is avoided, the locking function of the traction rod under the extending and retracting states can be realized simultaneously by rotating the locking ring, the structure of the locking mechanism can be simplified, and the inner space and the outer space of the telescopic mechanism are saved.
Description
Technical Field
The invention relates to the technical field of train couplers, in particular to a telescopic coupler locking device.
Background
The telescopic device is used as a key component of the train coupler, can ensure that the coupler is in an extending state when in a coupling operation, is in a retracting state when in a coupling operation, and saves the front end space of the train.
In order to ensure that the coupler remains in the current state after extension or retraction, a reliable locking mechanism is required for the telescopic device, and functions of extension locking and retraction locking are required. The locking mode of the current car coupler telescoping device mainly comprises the following modes: (1) The bolt type structure is simple, but the stressed sectional area is smaller; (2) The stop block type structure is simple, but the contact surface is two cambered surfaces with different radiuses, so that the contact surface is easy to wear and deform after a long time; (3) spline type.
Chinese patent CN108839668A proposes a car coupler telescoping device and car coupler, wherein the car coupler telescoping device includes the casing, and can follow the telescopic traction lever of casing, the casing cup joints in the outside of traction lever, the lateral surface of traction lever is fixed and is provided with the stopper, the inside cover of casing is equipped with the lock ring that can contact with the stopper, the lock ring is coaxial with the casing, the lock ring is rotatable with the casing and is connected, the interior surface of lock ring has seted up logical groove along the axial, logical groove's shape corresponds with the stopper, in order to make the stopper pass logical groove when logical groove and stopper centering, then after the traction lever stretches out and accomplish the stopper through the rotation of lock ring, accomplish the locking of stretching out of traction lever.
However, the retraction lock of the coupler expansion device adopts a bolt, so that the stress area is small, the number is single, and the retraction lock is unreliable.
Disclosure of Invention
The invention aims to solve one of the technical problems, improve the structure of a telescopic coupler locking device and provide a novel telescopic coupler locking device.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a telescopic coupler locking device comprising:
a shell: the device comprises an open end, wherein one side opposite to the open end can be connected to one end of a telescopic coupler;
traction lever: the traction rod can be connected to the other end of the telescopic coupler, and the side wall of the traction rod is provided with at least one locking groove;
telescoping assembly: the fixed end is connected and arranged in the shell, and the telescopic end is connected with the traction rod and can extend out from the opening end of the shell; the telescopic movement of the telescopic component can retract the traction rod into the space of the shell or push the traction rod out of the shell;
a locking ring: the sleeve is sleeved on the inner side of the opening end of the shell;
at least one set of lock assemblies: the locking ring is arranged on the shell and comprises an elastic piece which can stretch towards the radial direction of the shell;
the number of the locking grooves corresponds to the number of the locking block assemblies, and when the traction rod is retracted into the shell, the locking block assemblies can be inserted into the locking grooves to limit the extension movement of the traction rod.
In some embodiments of the invention, the lock block assembly comprises:
elastic piece: the locking ring is arranged on the locking ring and can stretch towards the radial direction of the shell;
locking block: the telescopic end is arranged at the elastic piece;
the length of the elastic member is configured to: the traction rod is in a compressed state when in contact with the outer arm of the traction rod; the lock block is sized to: can be inserted into a locking groove, and the movement of the traction rod along the axial direction is limited by the locking groove.
In some embodiments of the invention, the lock block assembly further comprises a mounting block mounted on the lock ring, the resilient member being mounted on the mounting block.
In some embodiments of the present invention, the mounting block includes a main body portion and a mounting block protruding portion protruding with respect to the main body portion, and the elastic member is mounted on the protruding portion; the locking ring is provided with a through hole, one side of the through hole, which is close to the periphery of the shell, is provided with a first step structure, the protruding part can penetrate through the first step structure, and the main body part is arranged on the first step structure.
In some embodiments of the present invention, a second step structure is disposed on a side of the through hole near the inner periphery of the housing, and the outer periphery of the locking block includes locking block protrusions disposed opposite to each other, where the locking block protrusions are clamped at the second step structure, so as to limit the locking block from falling out through the through hole.
In some embodiments of the invention, the head of the locking block is provided with a wear pad.
In some embodiments of the present invention, the locking groove is in a shape of an arc concave from two sides to the middle along the circumferential direction of the traction rod.
In some embodiments of the invention, a plurality of first radial protruding blocks are arranged at intervals along the inner peripheral wall of the locking ring, a plurality of second radial protruding blocks are arranged at intervals along the outer wall of the traction rod, and the second radial protruding blocks are positioned at one side close to the shell relative to the locking groove; the clearance between any two first radial projections may allow the second radial projection to pass through, and movement of the drawbar retracting to the housing is limited when the first radial projection is opposite the second radial projection.
In some embodiments of the invention, the locking assembly is disposed at the first radially protruding block and the locking groove is disposed on an extension of the second radially protruding block.
In some embodiments of the present invention, a handle is provided on an outer wall of the locking ring, the housing open end is provided with a handle hole extending in a housing circumferential direction, the handle is penetrated through the handle hole, and a circumferential length of the handle hole is configured to: the first radial projection may be rotated to the gap of two adjacent second radial projections opposite thereto, or may be rotated to be opposite to the second radial projections.
The telescopic coupler locking device provided by the invention has the beneficial effects that:
1. the adoption of the integrated design of the telescopic locking device and the locking ring avoids the complexity that a plurality of parts of the same telescopic device adopt the locking mechanism respectively, and the locking function of the traction rod under the extending and retracting states can be realized simultaneously by rotating the locking ring.
2. Can accomplish the locking to the traction lever under withdrawal and extension state respectively, wherein locking ring and traction lever form spline formula locking mechanism for bear the great bearing force when extending the locking, and the elasticity bolt formula locking mechanism that the locking piece formed with the traction lever, simple structure, and be used for bearing the less bearing force when withdrawing the locking, therefore this application flexible coupling locking device has further simplified the structure, has improved the flexible efficiency of coupling simultaneously.
3. When the traction rod is required to extend, the locking ring is rotated, so that the synchronous of the unlocking traction rod, the retraction and locking state of the traction rod and the extending requirement state can be met, and the movement effectiveness of the car coupler telescopic mechanism is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a coupler telescoping device of an embodiment of the present application;
FIG. 2 is a schematic view of the internal structure of the drawbar after retraction;
FIG. 3 is a schematic view of the internal structure of the traction lever in a locked state after retraction;
FIG. 4 is an enlarged partial view of a portion of the lock block assembly of FIG. 3;
FIG. 5a is an external schematic view of the drawbar in a contracted condition;
FIG. 5b is an external schematic view of the locking state of the drawbar after retraction
FIG. 6 is an exploded view of a locking device according to an embodiment of the present application;
FIG. 7 is a schematic view of a locking ring according to an embodiment of the present application;
FIG. 8 is a schematic view of the internal structure of the coupling extension device according to the embodiment of the present application when the drawbar is extended;
FIG. 9a is an external schematic view of the drawbar after extension;
FIG. 9b is an external schematic view of the traction lever in a locked state after extension;
1-a shell, 101-an open end, 102-a handle hole;
2-traction rod, 201-locking groove, 202-second radial protruding block;
3-locking ring, 301-through hole, 3011-first step structure, 3012-second step structure, 302-first radial projection block, 3021-clearance slot, 303-handle mounting hole;
4-a telescopic cylinder;
5-lock block assembly, 501-elastic member, 502-lock block, 5021-lock block projection, 503-mount block, 5031-mount block body, 5032-mount block projection; 504-wear pad, 505-mount;
6-handle.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present application, it should be noted that: the fixed connection can be detachable fixed connection or integrated fixed connection; the orientation or positional relationship indicated by the terms "axial," "radial," etc. are based on the positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element in question must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the present application; the words "first," "second," and "second" are used for descriptive purposes only and not to be construed as indicating or implying relative importance.
The invention provides a telescopic coupler locking device which can be used for locking an extending state and a retracting state of a telescopic coupler.
The structure of the locking device comprises a housing 1, a traction rod 2, a telescopic assembly, a locking ring 3 and a locking assembly, the explosive structure of which is referred to in fig. 1.
The shell 1: including open end 101, the side opposite open end 101 may be connected to an end of a telescopic coupler, which may also be designed as an open structure, with a closure assembly installed, facilitating installation and maintenance of the device.
Drawbar 2: can be connected to the other end of the telescopic coupler, and at least one locking groove 201 is arranged on the side wall of the traction rod 2.
Telescoping assembly: the telescopic cylinder 4 is adopted in the embodiment, the telescopic cylinder 4 comprises a fixed end and a telescopic end, the fixed end is connected and arranged in the shell 1, the telescopic end is connected with the traction rod 2, and the telescopic end can extend out through the opening end 101 of the shell; the telescopic movement of the telescopic component can retract the traction rod 2 into the space of the shell 1 or push the traction rod out of the shell 1; this telescoping motion controls the telescoping of the telescoping coupler. In addition to telescoping cylinders, telescoping cylinders or other types of telescoping drive arrangements may be employed.
Locking ring 3: referring to fig. 7, the sleeve is sleeved inside the open end 101 of the shell, and a non-fixed connection structure is formed between the sleeve and the shell 1; in this embodiment, the housing 1 is cylindrical, the locking ring 3 is also annular, and the outer diameter of the locking ring 3 is slightly smaller than the inner diameter of the opening end of the housing 1, so that the two forms a sleeved connection structure.
At least one set of lock assemblies 5: is arranged on the locking ring 3 and comprises an elastic piece which can stretch towards the radial direction of the shell 1;
the number of lock grooves 201 corresponds to the number of lock block assemblies 5, and the positions of the lock grooves 201 are configured to: the lock block assembly 5 can be inserted into the lock groove 201 when the drawbar 2 is retracted into the housing 1. In this embodiment, the number of the locking slots 201 is at least two, and the locking assemblies 5 are symmetrically arranged, and the positions of the locking assemblies on the locking ring 3 correspond to the positions of the locking slots 201, so as to ensure that the locking slots 201 can be smoothly inserted. Other numbers of cooperating locking slots 201 and locking block assemblies 5 than two may be selected as desired.
With reference to fig. 2 to 9 in combination, in the above configuration, after the drawbar 2 is retracted inside the housing 1, the locking assembly 5 is inserted into the locking groove 201, and the axial movement of the drawbar is restricted, achieving locking in the retracted state. When unlocking is required, the locking ring 3 is rotated, so that the locking assembly 5 is separated from the locking groove 201, and unlocking is completed.
The simplest lock block assembly is implemented by using a locking member with certain elasticity and rigidity, and in order to achieve a more stable locking effect, in some embodiments of the present invention, the lock block assembly includes:
elastic member 501: is mounted on the locking ring 3 and can extend and retract towards the radial direction of the shell 1;
locking block 502: is mounted at the telescoping end of the elastic member 501;
the length of the elastic member 501 is configured to: is in a compressed state when contacting with the outer arm of the traction rod 2; the lock block 502 is sized to: a locking groove 201 may be inserted, and the movement in the axial direction of the drawbar 2 is restricted by the locking groove 201.
Further, to address the problem of installation and maintenance of the locking assembly, in some embodiments of the present invention, the locking block assembly further includes a mounting block 503 mounted on the locking ring 3, and the elastic member 501 is mounted on the mounting block 503. The mounting block 503 is detachably mounted on the locking ring 3, and the locking assembly 5 can be periodically maintained by dismounting.
To solve the problem of installation between the locking assembly 5 and the locking assembly, in some embodiments of the present invention, the installation block 503 includes a main body portion 5031 and an installation block protrusion portion 5032 protruding with respect to the main body portion 5031, and the elastic member 501 is installed on the protrusion portion 5032; specifically, the elastic member 501 may employ a spring, and the protrusion 5032 is formed as a protrusion post, and the spring is sleeved on the protrusion post.
Referring to fig. 4 and 7, the locking ring 3 is provided with a through hole 301, one side of the through hole near the outer circumference of the housing 1 is relatively provided with a first step structure 3011, the protruding portion 5032 can penetrate between gaps at both sides of the first step structure 3011, the first step structure 3011 is provided with a threaded hole, and the main body portion 5031 is mounted on the first step structure 3011 through the fixing member 505, so that the fixing problem between the locking assembly 5 and the locking ring 3 is solved.
In some embodiments of the present invention, a second step structure 3012 is oppositely disposed at one side of the through hole 301 near the inner periphery of the housing 1, and a gap space is formed between the first step structure 3011 and the second step structure 3012; the outer periphery of the locking block 502 includes a locking block protrusion 502, and the locking block protrusion 502 is caught at the second step structure 3012 to restrict the locking block 502 from coming out through the through hole 301. The elastic member 501 is confined within the gap between the first step structure 3011 and the second step structure 3012.
Wherein, the first step structure 3011 and the second step structure 3012 can be realized by the following structures: the step may be a two-part step provided opposite to the inner peripheral wall of the through hole 301, or a circumferentially radially protruding step provided along the inner peripheral wall of the through hole.
During the extension and retraction of the traction rod 2, friction is generated between the traction rod and the locking block 502, and in order to improve the service life, the locking block 502 can be made of wear-resistant materials. Also, to address this problem, in some embodiments of the present invention, the head of locking block 502 is provided with wear pad 504.
In some embodiments of the present invention, the locking groove 201 is in a circular arc shape recessed from both sides toward the middle in the circumferential direction of the drawbar 2. When it is desired to unlock the locked state of the locking assembly, the locking ring 3 is rotated so that the locking blocks 502 are disengaged from both sides of the locking groove 201.
In some embodiments of the present invention, a plurality of first radial protruding blocks 302 are arranged at intervals along the inner peripheral wall of the locking ring 3, a plurality of second radial protruding blocks 202 are arranged at intervals along the outer wall of the traction rod 2, and the second radial protruding blocks 202 are located at one side, close to the shell 1, relative to the locking groove 201; the gap between any two first radial projections 302 may allow the second radial projection 202 to pass, and when the first radial projection 302 is opposite to the second radial projection 202, the movement of the drawbar 2 retracted to the housing is restricted, and the drawbar 2 is in an extended locked state.
The first radial projections 302 are equally sized, arranged with equal spacing, the second radial projections 202 are equally sized, arranged with equal spacing, and a clearance groove 3021 is formed between the first radial projections 302, and the clearance groove 3021 between adjacent first radial projections 302 allows the second radial projections 202 to pass through, and the clearance between adjacent second radial projections allows the first radial projections 302 to pass through. When the traction rod 2 needs to extend out of the shell, the locking ring 3 is rotated, so that the second radial protruding block 202 is opposite to the gap of the first radial protruding block 302, and the traction rod 2 is pushed out of the shell; when pushed out in place, the locking ring 3 is rotated such that the first radial projection 302 and the second radial projection 202 are opposed, and the retracting movement of the drawbar 3 is locked.
In some embodiments of the present invention, the locking assembly 5 is disposed at the first radial projection 302, that is, the through hole 301 is formed on the first radial projection 302, and the corresponding locking assembly 5 is also mounted at the first radial projection 302, and the corresponding locking groove 201 is disposed on the extension line of the second radial projection 202. The extension line is extended in the direction away from the side of the casing 1 along the direction of the outer surface of the traction rod 2 based on the position of the second radial protruding block 202, and is located on the outer surface away from the side of the casing 1.
The locking assembly 5 and the locking groove 201 are arranged to cooperate with such positions of the two sets of lugs that the extension lock and the retraction lock cooperate. When the locking needs to be retracted, the locking ring 3 is rotated to stagger the gaps between the two groups of protruding blocks, and after the second radial protruding block 202 is retracted into the first radial protruding block 302, the locking ring 3 is rotated again to enable the locking assembly 5 on the first radial protruding block 302 to rotate until entering the locking groove 201.
In some embodiments of the present invention, a handle mounting hole 303 is provided on the outer wall of the locking ring 3, a handle 6 is mounted at the handle mounting hole 303, a handle hole 102 extending along the circumferential direction of the housing is provided at the opening end of the housing, the handle 6 passes through the handle hole 102, and the circumferential length of the handle hole 102 is configured to: the first radial projection 302 may be rotated to the gap of two adjacent second radial projections 202 opposite thereto, or may be rotated to be opposite to the second radial projections 202. Opposite as referred to herein, refers to the two second radial projections 202 closest to the first radial projection 302 in the axial extension of the drawbar 3. By rotating the locking switch 3, the mating state of the first radial projection 302 and the second radial projection 202 is changed, and locking and unlocking are completed.
The telescopic locking device provided by the invention has the following action principle.
1. Extension lock
As shown in fig. 5b, the drawbar 2 is in a fully retracted state, when the lock block assembly 5 is in a locked position, which forms a plug-type lock with the lock groove 201.
The handle 6 is rotated to drive the locking ring 3 to rotate, so that the locking block assembly 5 slides out of the locking groove 201, and the traction rod 2 is in unlocking position. The telescopic cylinder stretches out to drive the traction rod 2 to stretch out, and in the process, the second radial protruding block 202 smoothly passes through the clearance groove 3021 (see fig. 8) between the first radial protruding blocks of the locking ring 3, and after the traction rod 2 stretches out to the right position, as shown in fig. 9 a. The handle 6 is rotated to drive the locking ring 3 to rotate, so that the clearance groove 3021 between the second radial protruding block 202 and the first radial protruding block of the locking ring 3 is dislocated, the traction rod 2 cannot retract, and the extension locking is completed, and at this time, the state of the coupler telescoping device is shown in fig. 9 b.
2. Retraction lock
As shown in fig. 9b, the drawbar 2 is in a fully extended state, where the second radial projection 202 is displaced from the clearance groove 3021 between the first radial projection of the locking ring 3, in a locked position, and a splined lock is formed between the locking ring 3 and the drawbar 2.
The handle 6 is rotated to drive the locking ring to rotate, so that the gap between the first radial protruding block 302 and the second radial protruding block 202 of the locking ring 3 is centered, and the traction rod 2 is in an unlocking position. The telescopic cylinder 4 is retracted to drive the traction rod 2 to retract, and in the process, the second radial protruding block 202 smoothly passes through the clearance groove 3021 (see fig. 8) between the first radial protruding blocks of the locking ring 3, and after the traction rod 2 is retracted in place, as shown in fig. 5 a. The handle 6 is rotated to drive the locking ring to rotate, so that the locking piece assembly 5 slides into the locking groove 201, at the moment, the traction rod 2 cannot extend out, the retraction locking is completed, and at the moment, the state of the coupler telescoping device is shown in fig. 5 b.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A telescopic coupler locking device, comprising:
a shell: the device comprises an open end, wherein one side opposite to the open end can be connected to one end of a telescopic coupler;
traction lever: the traction rod can be connected to the other end of the telescopic coupler, and the side wall of the traction rod is provided with at least one locking groove;
telescoping assembly: the fixed end is connected and arranged in the shell, and the telescopic end is connected with the traction rod and can extend out from the opening end of the shell; the telescopic movement of the telescopic component can retract the traction rod into the space of the shell or push the traction rod out of the shell;
a locking ring: the sleeve is sleeved on the inner side of the opening end of the shell;
at least one set of lock assemblies: the locking ring is arranged on the locking ring and can stretch towards the radial direction of the shell;
the number of the locking grooves corresponds to the number of the locking block assemblies, and when the traction rod is retracted into the shell, the locking block assemblies can be inserted into the locking grooves to limit the extension movement of the traction rod;
a plurality of first radial protruding blocks are arranged at intervals along the inner peripheral wall of the locking ring, a plurality of second radial protruding blocks are arranged at intervals along the outer wall of the traction rod, and the second radial protruding blocks are positioned at one side close to the shell relative to the locking groove; the clearance between any two first radial protruding blocks can allow the second radial protruding blocks to pass through, and when the first radial protruding blocks are opposite to the second radial protruding blocks, the movement of the traction rod retracted to the shell is limited;
the locking component is arranged at the first radial protruding block, and the locking groove is arranged on the extension line of the second radial protruding block;
the locking ring outer wall is provided with the handle, and the casing open end is provided with the handle hole that extends along casing circumference direction, the handle is worn out through the handle hole, the circumference length in handle hole is configured as: the first radial projection may be rotated to the gap of two adjacent second radial projections opposite thereto, or may be rotated to be opposite to the second radial projections.
2. The telescopic coupler lock of claim 1, wherein said lock block assembly comprises:
elastic piece: the locking ring is arranged on the locking ring and can stretch towards the radial direction of the shell;
locking block: the telescopic end is arranged at the elastic piece;
the length of the elastic member is configured to: the traction rod is in a compressed state when in contact with the outer arm of the traction rod; the lock block is sized to: can be inserted into a locking groove, and the movement of the traction rod along the axial direction is limited by the locking groove.
3. The telescopic coupler lock of claim 2, wherein said lock block assembly further comprises a mounting block mounted on a lock ring, said resilient member being mounted on said mounting block.
4. A telescopic coupler lock as claimed in claim 3, wherein the mounting block includes a main body portion and a mounting block projection projecting relative to the main body portion, the resilient member being mounted on the projection; the locking ring is provided with a through hole, one side of the through hole, which is close to the periphery of the shell, is provided with a first step structure, the protruding part can penetrate through the first step structure, and the main body part is arranged on the first step structure.
5. The telescopic coupler locking device of claim 4, wherein a second step structure is provided on a side of the through hole near the inner circumference of the housing, and the outer circumference of the locking piece includes a locking piece protrusion, and the locking piece protrusion is caught at the second step structure to restrict the locking piece from coming out through the through hole.
6. The telescopic coupler lock of claim 2, wherein the head of the lock block is provided with a wear pad.
7. A telescopic coupler lock as claimed in any one of claims 1 to 6, wherein the lock groove is arcuate with a recess from both sides to the centre in the circumferential direction of the drawbar.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614567.2A CN114802336B (en) | 2022-05-31 | 2022-05-31 | Locking device of telescopic coupler |
| PCT/CN2022/125547 WO2023061503A1 (en) | 2022-05-31 | 2022-10-17 | Telescopic coupler locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614567.2A CN114802336B (en) | 2022-05-31 | 2022-05-31 | Locking device of telescopic coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114802336A CN114802336A (en) | 2022-07-29 |
| CN114802336B true CN114802336B (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210614567.2A Active CN114802336B (en) | 2022-05-31 | 2022-05-31 | Locking device of telescopic coupler |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114802336B (en) |
| WO (1) | WO2023061503A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114802336B (en) * | 2022-05-31 | 2024-01-30 | 中车制动系统有限公司 | Locking device of telescopic coupler |
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| CN108839668A (en) * | 2018-06-27 | 2018-11-20 | 中车青岛四方车辆研究所有限公司 | Hitch telescopic device and hitch |
| CN109185216A (en) * | 2018-08-16 | 2019-01-11 | 东台友铭船舶配件有限公司 | A kind of clipping bearing for ship of locking |
| CN212429445U (en) * | 2020-04-28 | 2021-01-29 | 西安艾力特航空科技有限公司 | Telescopic rod |
| CN113027788A (en) * | 2021-04-13 | 2021-06-25 | 肇庆市小凡人科技有限公司 | Fan convenient to installation impeller |
| CN216453745U (en) * | 2021-08-16 | 2022-05-10 | 浙江永强集团股份有限公司 | Tubular product extending structure for sun shade |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040207214A1 (en) * | 2003-04-16 | 2004-10-21 | Yi-An Lin | Electronic door lock |
| CN114802336B (en) * | 2022-05-31 | 2024-01-30 | 中车制动系统有限公司 | Locking device of telescopic coupler |
-
2022
- 2022-05-31 CN CN202210614567.2A patent/CN114802336B/en active Active
- 2022-10-17 WO PCT/CN2022/125547 patent/WO2023061503A1/en unknown
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| DE1131721B (en) * | 1960-12-02 | 1962-06-20 | Knorr Bremse Kg | Spring loaded bumpers for rail vehicles |
| EP1987967A1 (en) * | 2007-04-30 | 2008-11-05 | ARIES S.r.l. | Sliding tow hook for farming machines |
| CN102424057A (en) * | 2011-12-05 | 2012-04-25 | 青岛四方车辆研究所有限公司 | Telescopic mechanism of telescopic coupler and buffer device for high-speed motor train unit |
| CN103618171A (en) * | 2013-11-29 | 2014-03-05 | 浩亭(珠海)制造有限公司 | Male connector, female connector and connector component |
| CN106218662A (en) * | 2016-08-23 | 2016-12-14 | 中车青岛四方车辆研究所有限公司 | Telescopic coupler and draft gear |
| CN207229221U (en) * | 2017-09-07 | 2018-04-13 | 绍兴中智特汽车配件有限公司 | A kind of erecting device of car tail larynx |
| CN108839668A (en) * | 2018-06-27 | 2018-11-20 | 中车青岛四方车辆研究所有限公司 | Hitch telescopic device and hitch |
| CN109185216A (en) * | 2018-08-16 | 2019-01-11 | 东台友铭船舶配件有限公司 | A kind of clipping bearing for ship of locking |
| CN212429445U (en) * | 2020-04-28 | 2021-01-29 | 西安艾力特航空科技有限公司 | Telescopic rod |
| CN113027788A (en) * | 2021-04-13 | 2021-06-25 | 肇庆市小凡人科技有限公司 | Fan convenient to installation impeller |
| CN216453745U (en) * | 2021-08-16 | 2022-05-10 | 浙江永强集团股份有限公司 | Tubular product extending structure for sun shade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114802336A (en) | 2022-07-29 |
| WO2023061503A1 (en) | 2023-04-20 |
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