CN114802336A - Telescopic coupler locking device - Google Patents
Telescopic coupler locking device Download PDFInfo
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- CN114802336A CN114802336A CN202210614567.2A CN202210614567A CN114802336A CN 114802336 A CN114802336 A CN 114802336A CN 202210614567 A CN202210614567 A CN 202210614567A CN 114802336 A CN114802336 A CN 114802336A
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- 238000000429 assembly Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
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- 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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- Mechanical Engineering (AREA)
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Abstract
The invention provides a telescopic coupler locking device, comprising: the housing may be connected to one end of a telescoping coupler; a traction rod: the side wall of the telescopic coupler is provided with at least one locking groove; a telescopic assembly: the fixed end is connected and arranged in the shell, and the telescopic end is connected with the traction rod; locking ring: is sleeved at the inner side of the opening end of the shell; at least one set of locking block assemblies: the locking ring is arranged on the locking ring and can stretch and retract 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 retracts into the shell, the locking block assemblies can be inserted into the locking grooves to limit the extending movement of the traction rod. The locking device adopts the integrated design of the telescopic locking device and the locking ring, the complexity that a plurality of parts of the same telescopic device respectively adopt the locking mechanisms is avoided, the locking function of the traction rod in the extending and retracting states can be simultaneously realized by rotating the locking ring, the structure of the locking mechanism can be simplified, and the internal space and the external space of the telescopic mechanism are saved.
Description
Technical Field
The invention relates to the technical field of train couplers, in particular to a locking device for a telescopic coupler.
Background
The telescopic device is used as a key part of the train coupler, can ensure that the train coupler is in an extending state when in coupling operation and is in a retracting state when in coupling operation, and saves the space at the front end of the train.
In order to ensure that the coupler can keep the current state after being extended or retracted, the telescopic device is required to be provided with a reliable locking mechanism, and the functions of extension locking and retraction locking are required. At present, the locking mode of a coupler expansion device mainly comprises the following modes: (1) the bolt type is simple in structure, but the stress sectional area is small; (2) the structure of the blocking block is simpler, but the contact surface is two cambered surfaces with different radiuses, so the contact surface is easy to wear and deform after a long time; (3) spline type.
The invention provides a coupler expansion device and a coupler, wherein the coupler expansion device comprises a shell and a draw bar capable of expanding and contracting along the shell, the shell is sleeved outside the draw bar, a limiting block is fixedly arranged on the outer side surface of the draw bar, a locking ring capable of contacting with the limiting block is sleeved inside the shell, the locking ring is coaxial with the shell, the locking ring is rotatably connected with the shell, a through groove is axially formed in the inner surface of the locking ring, the shape of the through groove corresponds to that of the limiting block, when the through groove is aligned with the limiting block, the limiting block penetrates through the through groove, and then when the draw bar is stretched out, the limiting block is blocked through rotation of the locking ring, and stretching and locking of the draw bar are completed.
However, the draw gear telescoping device adopts a bolt type for retraction and locking, the stress area is small, the quantity is single, and the retraction and locking are not reliable.
Disclosure of Invention
The invention aims to solve one of the technical problems, improve the structure of the telescopic coupler locking device and provide a novel telescopic coupler locking device.
In order to achieve the purpose, the invention adopts the technical scheme that:
a telescoping coupler locking device, comprising:
a housing: the side opposite to the open end can be connected to one end of the telescopic coupler;
a traction rod: the draw bar can be connected to the other end of the telescopic coupler, and at least one locking groove is formed in the side wall of the draw bar;
a telescopic 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 through the opening end of the shell; the telescopic component can retract the traction rod into the space of the shell or push the traction rod out of the shell through telescopic motion;
locking ring: the sleeve is sleeved on the inner side of the opening end of the shell;
at least one set of locking block assemblies: the locking ring is arranged on the shell and comprises an elastic piece which can stretch and retract 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 retracts into the shell, the locking block assemblies can be inserted into the locking grooves to limit the extending movement of the traction rod.
In some embodiments of the invention, the lock block assembly comprises:
an elastic member: the locking ring is arranged on the locking ring and can extend and retract towards the radial direction of the shell;
a locking block: the telescopic end is arranged on the elastic piece;
the length of the elastic member is configured to: the outer arm of the traction rod is in a compressed state when in contact with the outer arm of the traction rod; the locking block is sized to: can be inserted into the lock groove and is limited by the lock groove to move along the axial direction of the traction rod.
In some embodiments of the invention, the lock block assembly further comprises a mounting block mounted on the locking 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 from 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 installed on the first step structure.
In some embodiments of the invention, a second step structure is arranged on one side of the through hole close to the inner periphery of the shell, the outer periphery of the locking block comprises oppositely arranged locking block protruding parts, and the locking block protruding parts are clamped at the second step structure to limit the locking block from coming 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 lock groove is formed in a circular arc shape with two sides concave downward toward the middle along the circumferential direction of the drawbar.
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 on one side close to the shell relative to the locking groove; the gap between any two first radial protruding blocks can allow the second radial protruding block to pass through, and when the first radial protruding blocks are opposite to the second radial protruding blocks, the movement of the traction rod retracting to the shell is limited.
In some embodiments of the present invention, the locking assembly is disposed at the first radially protruding piece, and the locking groove is disposed on an extension line of the second radially protruding piece.
In some embodiments of the present invention, the locking ring is provided with a handle on an outer wall thereof, the open end of the housing is provided with a handle hole extending along a circumferential direction of the housing, the handle penetrates through the handle hole, and a circumferential length of the handle hole is configured as follows: the first radial protruding block can be rotated to the gap between two adjacent second radial protruding blocks opposite to the first radial protruding block, and can also be rotated to be opposite to the second radial protruding blocks.
The telescopic coupler locking device provided by the invention has the beneficial effects that:
1. the integrated design of the telescopic locking device and the locking ring is adopted, the complexity that locking mechanisms are respectively adopted at a plurality of positions of the same telescopic device is avoided, the locking function of the traction rod in the extending and retracting states can be simultaneously realized by rotating the locking ring, compared with the existing telescopic mechanism, the structure of the locking mechanism is simplified, and the internal space and the external space of the telescopic mechanism are saved.
2. The locking device can respectively lock the traction rod in the retracting state and the extending state, wherein the locking ring and the traction rod form a spline type locking mechanism used for bearing larger bearing force when the traction rod is extended and locked, and the elastic bolt type locking mechanism formed by the locking block and the traction rod is simple in structure and used for bearing smaller bearing force when the traction rod is retracted and locked, so that the structure of the telescopic coupler locking device is further simplified, and meanwhile, the telescopic efficiency of the coupler is improved.
3. When the draw bar needs to extend, the locking ring is rotated, the synchronism of the retraction locking state of the unlocking draw bar and the draw bar capable of meeting the extending demand state can be ensured, and the effectiveness of the movement of the 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 will 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 in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is an exploded view of a coupler retractor device according to an embodiment of the present application;
FIG. 2 is a schematic view of the internal structure of the retractable drawbar;
FIG. 3 is a schematic view of the internal structure of the drawbar in the locked state after retraction;
FIG. 4 is an enlarged view of a portion of the lock block assembly of FIG. 3;
FIG. 5a is an external view of the drawbar in a retracted state;
FIG. 5b is an external view of the drawbar in the locked state 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 structural diagram of a locking ring according to an embodiment of the present application;
fig. 8 is a schematic view of the internal structure of the coupler expansion device according to the embodiment of the present application after the drawbar is extended;
FIG. 9a is an external view of the drawbar after it is extended;
FIG. 9b is an external view of the drawbar in the locked position after it is extended;
1-housing, 101-open end, 102-handle hole;
2-a drawbar, 201-a keyway, 202-a second radial projection;
3-locking ring, 301-through hole, 3011-first step structure, 3012-second step structure, 302-first radial projection block, 3021-clearance groove, 303-handle mounting hole;
4-a telescopic cylinder;
5-locking piece assembly, 501-spring, 502-locking piece, 5021-locking piece protrusion, 503-mounting piece, 5031-mounting piece main body, 5032-mounting piece protrusion; 504-wear pad, 505-fixture;
6-handle.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present 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 merely illustrative of the invention and are not intended to limit the invention.
In the description of the present application, it is to be noted that: the fixed connection can be detachable fixed connection or integrated fixed connection; the terms "axial," "radial," and the like, refer to an orientation or positional relationship based on that shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application; the terms "first" and "second" are used for descriptive purposes only and are 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, and the explosive structure of the locking device is shown in figure 1.
A housing 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 configured as an open structure, with a closure assembly installed to facilitate installation and maintenance of the device.
A traction rod 2: which can be coupled to the other end of the telescopic coupler, the drawbar 2 is provided with at least one locking groove 201 in a side wall thereof.
A telescopic 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, and the telescopic end is connected with the traction rod 2 and can extend out through the open end 101 of the shell; the telescopic motion of the telescopic assembly 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 movement controls the telescoping of the telescoping coupler. Besides the telescopic cylinder, a telescopic electric cylinder or other types of telescopic driving structures can also be adopted.
Locking ring 3: referring to fig. 7, the sleeve is sleeved inside the open end 101 of the housing, and forms a non-fixed connection structure with the housing 1; in this embodiment, the housing 1 is cylindrical, the locking ring 3 is also annular, the outer diameter of the locking ring 3 is slightly smaller than the inner diameter of the opening end of the housing 1, and the two form a sleeved connection structure.
At least one set of locking block assemblies 5: the locking ring is arranged on the locking ring 3, comprises an elastic piece and can stretch and retract towards the radial direction of the shell 1;
the number of locking slots 201 corresponds to the number of locking block assemblies 5, and the positions of the locking slots 201 are configured as follows: the locking piece assembly 5 may be inserted into the locking slot 201 when the drawbar 2 is retracted into the housing 1. In this embodiment, the number of the locking grooves 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 grooves 201, so as to ensure that the locking grooves 201 can be smoothly inserted. Besides two, other numbers of locking grooves 201 and locking piece assemblies 5 can be selected according to the requirement.
With reference to fig. 2 to 9, in the above structure, after the drawbar 2 is retracted into the housing 1, the locking assembly 5 is inserted into the locking groove 201, and the axial movement of the drawbar is restricted, thereby achieving locking in the retracted state. When unlocking is needed, the locking ring 3 is rotated to enable the locking assembly 5 to be disengaged from the locking groove 201, and unlocking is completed.
The simplest implementation structure of the lock block assembly is to use a locking member with certain elasticity and rigidity, and in order to achieve a more stable locking effect, in some embodiments of the invention, the lock block assembly includes:
the elastic member 501: the locking ring is arranged on the locking ring 3 and can extend and retract towards the radial direction of the shell 1;
the locking block 502: is arranged at the telescopic end of the elastic piece 501;
the length of the elastic member 501 is configured to: the outer arm of the traction rod 2 is in a compressed state when in contact with the outer arm; the dimensions of the lock block 502 are configured to: can be inserted into the lock groove 201 and is restricted from moving in the axial direction of the drawbar 2 by the lock groove 201.
Further, in order to solve 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 removably mounted to the locking ring 3 to allow periodic maintenance of the locking assembly 5 by removal and installation.
To solve the problem of installation between the locking assembly 5 and the locking assembly, in some embodiments of the present invention, the mounting block 503 comprises a body portion 5031 and a mounting block protrusion 5032 protruding from the body portion 5031, and the elastic member 501 is installed on the protrusion 5032; specifically, the elastic member 501 may be a spring, and the protrusion 5032 is formed as a protruding post, and the spring is sleeved on the protruding post.
Referring to fig. 4 and 7, the locking ring 3 is provided with a through hole 301, one side of the through hole close to the outer periphery of the housing 1 is provided with a first stepped structure 3011, the protrusion 5032 can penetrate through the gap between the two sides of the first stepped structure 3011, the first stepped structure 3011 is provided with a threaded hole, and the main body 5031 is mounted on the first stepped structure 3011 through the fixing piece 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 on one side of the through hole 301 close to the inner circumference of the housing 1, and a gap space is formed between the first step structure 3011 and the second step structure 3012; the locking block 502 comprises a locking block protrusion 502 at the periphery, and the locking block protrusion 502 is clamped at the second step structure 3012 to limit the locking block 502 from escaping through the through hole 301. The resilient member 501 is confined within the gap between the first and second stepped structures 3011 and 3012.
The first step structure 3011 and the second step structure 3012 may be implemented by: the step may be two steps oppositely arranged on the inner peripheral wall of the through hole 301, or a circumferential radial protruding step arranged along the inner peripheral wall of the through hole.
In the process of extending and retracting the traction rod 2, friction is generated between the traction rod and the locking block 502, and in order to prolong the service life, the locking block 502 can be made of wear-resistant materials. Also, to address this issue, in some embodiments of the invention, the head of the locking block 502 is provided with a wear pad 504.
In some embodiments of the present invention, the lock groove 201 has a circular arc shape that is concave from two sides to a middle portion in a circumferential direction of the drawbar 2. When the locking state of the locking assembly needs to be unlocked, the locking ring 3 is rotated, so that the locking blocks 502 are disengaged from the two sides of the locking groove 201.
In some embodiments of the present invention, a plurality of first radial protruding blocks 302 are disposed at intervals along the inner peripheral wall of the locking ring 3, a plurality of second radial protruding blocks 202 are disposed at intervals along the outer wall of the drawbar 2, and the second radial protruding blocks 202 are located at one side close to the housing 1 relative to the locking groove 201; the gap between any two first radial protruding blocks 302 can allow the second radial protruding blocks 202 to pass through, when the first radial protruding blocks 302 are opposite to the second radial protruding blocks 202, the retraction movement of the traction rod 2 to the shell is limited, and the traction rod 2 is in an extending locking state.
The first radial protruding blocks 302 are equal in size and arranged at equal intervals, the second radial protruding blocks 202 are equal in size and arranged at equal intervals, clearance grooves 3021 are formed between the first radial protruding blocks 302, the clearance grooves 3021 between the adjacent first radial protruding blocks 302 allow the second radial protruding blocks 202 to pass through, and the clearance between the adjacent second radial protruding blocks allows the first radial protruding blocks 302 to pass through. When the traction rod 2 needs to extend out of the shell, the locking ring 3 is rotated to enable the second radial protruding block 202 to be 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 to the position, the locking ring 3 is rotated to make the first radial protruding block 302 and the second radial protruding block 202 opposite to each other, and the retraction movement of the drawbar 3 is locked and limited.
In some embodiments of the present invention, the locking assembly 5 is disposed at the first radial protrusion 302, that is, the through hole 301 is opened on the first radial protrusion 302, and the corresponding locking assembly 5 is also mounted at the first radial protrusion 302, and accordingly, the locking groove 201 is disposed on the extension line of the second radial protrusion 202. The extension line is extended in the direction away from the shell 1 along the direction of the outer surface of the traction rod 2 with the position of the second radial protruding block 202 as a reference, and is positioned on the outer surface of the side away from the shell 1.
The locking assembly 5 and the locking groove 201 cooperate with this positioning of the two sets of lugs to cooperate with the extension locking and the retraction locking. When the locking needs to be retracted, the locking ring 3 is rotated to stagger the gaps between the two sets of the protruding blocks, and when the second radial protruding block 202 is retracted into the first radial protruding block 302, the locking ring 3 is rotated to enable the locking assembly 5 on the first radial protruding block 302 to rotate to enter the locking groove 201.
In some embodiments of the present invention, a handle mounting hole 303 is formed on an outer wall of the locking ring 3, a handle 6 is mounted at the handle mounting hole 303, a handle hole 102 extending along a circumferential direction of the housing is formed at an open end of the housing, the handle 6 penetrates through the handle hole 102, and a circumferential length of the handle hole 102 is configured as follows: the first radial projection piece 302 can be rotated to the gap between two adjacent second radial projection pieces 202 opposite thereto, and can also be rotated to be opposite to the second radial projection pieces 202. The term "opposite" as used herein means two second radial protrusions 202 located closest to the first radial protrusions 302 in the axial extension direction of the drawbar 3. And 3, changing the matching state of the first radial protruding block 302 and the second radial protruding block 202 by rotating the locking switch, and completing locking and unlocking.
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 with the lock block assembly 5 in a locked position, which provides a latch-type lock with the lock slot 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 at the unlocking position. The telescopic cylinder is extended to drive the traction rod 2 to extend, and the second radial protrusion 202 smoothly passes through the clearance groove 3021 (see fig. 8) between the first radial protrusions of the locking ring 3 in the process, and when the traction rod 2 is extended to the proper 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 drawbar 2 cannot retract, and the extension locking is completed, and at this time, the state of the coupler retractor is as shown in fig. 9 b.
2. Retraction lock
As shown in fig. 9b, the drawbar 2 is in a fully extended state, in which the second radial protrusions 202 are misaligned with the clearance slots 3021 between the first radial protrusions of the locking ring 3, in a locked position, and a spline-type lock is formed between the locking ring 3 and the drawbar 2.
The handle 6 is rotated to rotate the locking ring, so that the gap between the first radial protrusion block 302 and the second radial protrusion block 202 of the locking ring 3 is aligned, and the traction rod 2 is in the unlocking position. The telescopic cylinder 4 retracts to drive the drawbar 2 to retract, and the second radial projection 202 smoothly passes through the clearance groove 3021 (see fig. 8) between the first radial projections of the locking ring 3 during the process, and when the drawbar 2 retracts to the right position, as shown in fig. 5 a. The handle 6 is rotated to drive the locking ring to rotate, so that the locking block assembly 5 slides into the locking groove 201, the traction rod 2 cannot extend out at the moment, retraction and locking are completed, and the state of the coupler expansion device is shown in fig. 5b at the moment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A telescopic coupler locking device, comprising:
a housing: the side opposite to the open end can be connected to one end of the telescopic coupler;
a traction rod: the draw bar can be connected to the other end of the telescopic coupler, and at least one locking groove is formed in the side wall of the draw bar;
a telescopic 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 through the opening end of the shell; the telescopic motion of the telescopic assembly can retract the draw bar into the space of the shell or push the draw bar out of the shell;
locking ring: the sleeve is sleeved on the inner side of the opening end of the shell;
at least one set of locking block assemblies: the locking ring is arranged on the locking ring and can stretch and retract towards the radial direction of the shell;
the number of locking slots corresponds to the number of locking block assemblies, and when the draw bar is retracted into the housing, the locking block assemblies can be inserted into the locking slots to limit the extension movement of the draw bar.
2. The telescoping coupler locking device of claim 1, wherein said lock block assembly comprises:
an elastic member: the locking ring is arranged on the locking ring and can extend and retract towards the radial direction of the shell;
a locking block: the telescopic end is arranged on the elastic piece;
the length of the elastic member is configured to: the outer arm of the traction rod is in a compressed state when in contact with the outer arm of the traction rod; the locking block is sized to: can be inserted into the lock groove and is limited by the lock groove to move along the axial direction of the traction rod.
3. The telescoping coupler locking arrangement of claim 2, wherein said lock block assembly further includes a mounting block mounted to the lock ring, said resilient member being mounted to said mounting block.
4. The telescoping coupler locking device of claim 3, wherein said mounting block includes a main body portion and a mounting block projection projecting relative to the main body portion, said resilient member being mounted on said 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 installed on the first step structure.
5. The retractable coupler locking device as claimed in claim 4, wherein a second step structure is provided at a side of the through hole adjacent to the inner periphery of the housing, and the outer periphery of the locking block includes a locking block protrusion which is caught at the second step structure to restrict the locking block from coming out through the through hole.
6. A telescoping coupler locking arrangement as claimed in claim 2, wherein the head of the locking block is provided with a wear pad.
7. The retractable coupler locking device as claimed in any one of claims 1 to 6, wherein said locking groove is formed in a circular arc shape that is depressed from both sides toward a middle portion in a circumferential direction of the drawbar.
8. The telescoping coupler locking device of claims 1-7, wherein a plurality of first radial projections are spaced along an inner peripheral wall of the locking ring and a plurality of second radial projections are spaced along an outer wall of the drawbar, the second radial projections being located on a side of the housing opposite the locking slot; the gap between any two first radial protruding blocks can allow the second radial protruding block to pass through, and when the first radial protruding blocks are opposite to the second radial protruding blocks, the movement of the traction rod retracting to the shell is limited.
9. The telescoping coupler locking assembly of claim 8, wherein the locking member is disposed at the first radially projecting tab and the locking slot is disposed on an extension of the second radially projecting tab.
10. The telescoping coupler locking device of claim 9, wherein the locking ring outer wall is provided with a handle, the housing open end is provided with a handle aperture extending in a circumferential direction of the housing, the handle extends through the handle aperture, and a circumferential length of the handle aperture is configured to: the first radial protruding block can be rotated to the gap between two adjacent second radial protruding blocks opposite to the first radial protruding block, and can also be rotated to be opposite to the second radial protruding blocks.
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 true CN114802336A (en) | 2022-07-29 |
| CN114802336B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061503A1 (en) * | 2022-05-31 | 2023-04-20 | 中车制动系统有限公司 | Telescopic coupler locking device |
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| 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 |
Family Cites Families (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 |
-
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 |
| US20040207214A1 (en) * | 2003-04-16 | 2004-10-21 | Yi-An Lin | Electronic door lock |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061503A1 (en) * | 2022-05-31 | 2023-04-20 | 中车制动系统有限公司 | Telescopic coupler locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114802336B (en) | 2024-01-30 |
| WO2023061503A1 (en) | 2023-04-20 |
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