WO2023061503A1 - Telescopic coupler locking device - Google Patents

Telescopic coupler locking device Download PDF

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Publication number
WO2023061503A1
WO2023061503A1 PCT/CN2022/125547 CN2022125547W WO2023061503A1 WO 2023061503 A1 WO2023061503 A1 WO 2023061503A1 CN 2022125547 W CN2022125547 W CN 2022125547W WO 2023061503 A1 WO2023061503 A1 WO 2023061503A1
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WO
WIPO (PCT)
Prior art keywords
block
locking
telescopic
housing
lock
Prior art date
Application number
PCT/CN2022/125547
Other languages
French (fr)
Chinese (zh)
Inventor
王广超
刘辉
王晓鹏
Original Assignee
中车制动***有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中车制动***有限公司 filed Critical 中车制动***有限公司
Publication of WO2023061503A1 publication Critical patent/WO2023061503A1/en

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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

Definitions

  • the present application relates to the technical field of train couplers, in particular to a telescopic coupler locking device.
  • the telescopic device can ensure that the coupler is in an extended state when it is connected to the hook, and is in a retracted state when it does not need to be connected to run, saving the space at the front end of the train.
  • the telescopic device In order to ensure that the coupler can maintain the current state after it is extended or retracted, the telescopic device is required to have a reliable locking mechanism, and it needs to have the functions of extension locking and retraction locking.
  • the locking methods of the coupler telescopic device mainly include the following methods: (1) the pin type, which has a simple structure, but the force cross-sectional area is small; (2) the block type, which has a relatively simple structure, but the contact surface is two radii Different arc surfaces, so the contact surface is easy to wear and deform after a long time; (3) spline type.
  • the Chinese patent application CN108839668A proposes a coupler telescopic device and a coupler, wherein the coupler telescopic device includes a casing, and a drawbar that can expand and contract along the casing.
  • the inside of the casing is provided with a locking ring that can be in contact with the limit block.
  • the locking ring is coaxial with the casing, and the locking ring is rotatably connected to the casing.
  • the shape of the groove corresponds to the limit block, so that when the through slot and the limit block are aligned, the limit block passes through the through slot, and then when the drawbar is extended, the rotation of the locking ring realizes the limit Block blocking, complete the extended locking of the tow bar.
  • the retraction lock of the above-mentioned coupler telescopic device adopts a bolt type, the force bearing area is small, the number is single, and the retraction lock is unreliable.
  • the purpose of the present application is to solve one of the above-mentioned technical problems, and to provide a novel telescopic coupler locking device.
  • an embodiment of the present application provides a telescopic coupler locking device, including:
  • housing including an open end, the end opposite the open end being connectable to an end of the telescoping coupler;
  • Tow bar can be connected to the other end of the telescopic coupler, the side wall of the tow bar is provided with at least one lock slot;
  • Telescopic assembly including a fixed end and a telescopic end, the fixed end is connected to the casing, the telescopic end is connected to the drawbar, and can be stretched out through the open end of the casing; the telescopic movement of the telescopic assembly can retract the drawbar into the space of the casing, or push out of the housing;
  • Locking ring set inside the open end of the shell
  • At least one set of locking block components installed on the locking ring, including elastic parts, which can expand and contract toward the radial direction of the housing;
  • the number of lock slots corresponds to the number of lock block assemblies.
  • the lock block assembly includes:
  • Elastic part installed on the locking ring, it can expand and contract towards the radial direction of the housing;
  • Locking block installed on the telescopic end of the elastic piece
  • the length of the elastic member is configured to be in a compressed state when in contact with the outer wall of the draw bar; the size of the locking block is configured to be inserted into the lock slot, and the movement along the axial direction of the draw bar is restricted by the lock slot.
  • the locking block assembly further includes a mounting block mounted on the locking ring, and the elastic member is mounted on the mounting block.
  • the mounting block includes a main body of the mounting block and a protruding portion of the mounting block that protrudes relative to the main body of the mounting block, and the elastic member is installed on the protruding portion of the mounting block; a through hole is provided on the locking ring, and the through hole A first stepped structure is provided on a side close to the outer periphery of the housing, the protruding part can pass through the gap between the first stepped structures, and the main body of the mounting block is installed on the first stepped structure.
  • a second step structure is provided on the side of the through hole close to the inner periphery of the housing, and the outer periphery of the locking block includes a locking block protrusion, and the locking block protrusion is stuck at the second step structure to limit the locking block. Comes out through the through hole.
  • the head of the locking block is provided with a wear pad.
  • the locking groove is in the shape of an arc concave from both sides to the middle.
  • first radially protruding blocks are arranged at intervals along the inner peripheral wall of the locking ring, and several second radially protruding blocks are arranged at intervals along the outer wall of the draw bar, and the second radially protruding blocks are relatively opposite to the locking ring.
  • the slot is located on one side close to the housing; the gap between any two first radially protruding pieces can allow the passage of the second radially protruding piece, and the first radially protruding piece is opposite to the second radially protruding piece , the retraction of the drawbar to the housing is restricted.
  • the locking block assembly is arranged at the first radially protruding block, and the locking groove is arranged on the extension line of the second radially protruding block.
  • a handle is provided on the outer wall of the locking ring, and a handle hole extending along the circumferential direction of the housing is provided at the open end of the housing.
  • the handle passes through the handle hole, and the circumferential length of the handle hole is configured as follows: Rotate the first radial protruding block to the gap between two adjacent second radial protruding blocks opposite to it, or rotate to make the first radial protruding block opposite to the second radial protruding block .
  • the lock block assembly is set to cooperate with the lock groove, and the retraction locking of the drawbar is realized by the cooperation of the locking ring and the drawbar itself during the movement process , simplifies the structure, increases the stress area, and improves the reliability of retraction locking.
  • the lock block assembly and the first radially protruding block are arranged on the locking ring, and the second radially protruding block is arranged on the outer wall of the drawbar, Compared with the existing telescopic mechanism, it avoids the complexity of using different locking mechanisms for multiple parts of the same telescopic device, simplifies the internal and external structures of the housing, and is conducive to setting the external driving structure inside the housing, thereby The occupied space is reduced, and the weight of the coupler is greatly reduced at the same time.
  • the telescopic coupler locking device provided by at least one embodiment of the present application can simultaneously realize the locking function of the drawing rod in the extended and retracted states by rotating the locking ring.
  • the locking ring and the drawing rod form a spline-type locking mechanism for It bears a larger bearing force when extended and locked, while the lock block assembly and the slot form a latch-type locking mechanism, which has a simple structure and is used to withstand a smaller bearing force when retracted and locked. Therefore, the coupler telescopic device of this application further simplifies Compared with the existing telescopic mechanism, the structure simplifies the locking operation of the locking device and improves the telescopic efficiency of the coupler.
  • the locking ring when the drawbar needs to be extended, the locking ring can be rotated to ensure the synchronization between unlocking the retracted locking state of the drawbar and the state that the drawbar can meet the extension requirement.
  • the effectiveness of the movement of the telescopic mechanism of the coupler is improved.
  • Fig. 1 is the exploded view of the telescopic coupler locking device of the embodiment of the present application
  • Figure 2 is an exploded view of the drawbar and locking ring of the telescopic coupler locking device of the embodiment of the present application;
  • Fig. 3 is the structural representation of the draw bar of the embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a locking ring according to an embodiment of the present application.
  • Figure 5 is an exploded view of the lock block assembly of the embodiment of the present application.
  • Fig. 6 is a cross-sectional view of the locking state of the telescopic coupler locking device according to the embodiment of the present application after the drawbar shrinks;
  • Fig. 7 is a partial enlarged view of the locking block assembly in Fig. 6;
  • Fig. 8a is a schematic diagram of the internal structure of the telescopic coupler locking device of the embodiment of the present application in the unlocked state after the retraction of the drawbar;
  • Fig. 8b is a schematic diagram of the internal structure of the telescopic coupler locking device of the embodiment of the present application when the drawbar is retracted and locked;
  • Fig. 9a is a schematic diagram of the external structure of the telescopic coupler locking device according to the embodiment of the present application, in which the drawbar is retracted and unlocked;
  • Fig. 9b is a schematic diagram of the external structure of the telescopic coupler locking device according to the embodiment of the present application when the drawbar is retracted and locked.
  • Fig. 10 is a schematic diagram of the internal structure of the drawbar of the telescopic coupler locking device of the embodiment of the present application during the extension process;
  • Fig. 11a is a schematic diagram of the external structure of the locking device of the telescopic coupler according to the embodiment of the present application in the unlocked state after the drawbar is stretched out;
  • Fig. 11b is a schematic diagram of the external structure of the telescopic coupler locking device of the embodiment of the present application after the drawbar is stretched out and locked;
  • 3-locking ring 301-through hole, 3011-first step structure, 3012-second step structure, 3013-threaded hole, 302-first radial protruding block, 3021-clearance groove, 303-handle installation hole;
  • 4-telescopic assembly 41-fixed end; 42-telescopic end; 401-telescopic cylinder;
  • 5-lock block assembly 501-elastic piece, 502-lock block, 5021-lock block protrusion, 5022-lock block main body, 503-installation block, 5031-installation block main body, 5032-installation block protrusion ; 504-abrasion pad, 505-fixing piece;
  • the fixed connection described in this application can be a detachable fixed connection, or an integrated fixed connection; the orientation or position indicated by the terms “axial” and “radial” The relationship is based on the positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the present application; the terms “first” and “second” are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.
  • the embodiment of the present application provides a locking device for a telescopic coupler, which can be used for locking the extended state and the retracted state of the telescopic coupler.
  • the structure of the locking device includes a housing 1, a towing rod 2, a telescopic assembly 4, a locking ring 3 and a locking block assembly 5, and its exploded structure refers to Fig. 1 and Fig. 2 .
  • Housing 1 including an open end 101, the end opposite to the open end 101 can be connected to one end of the telescopic coupler; the end of the housing 1 opposite to the open end 101 can also be designed as an open structure, on which a Closed components facilitate device installation and maintenance.
  • the “end opposite to the open end 101 ” mentioned here refers to the other end of the casing 1 away from the open end 101 .
  • Drawbar 2 as shown in FIG. 3 , it can be connected to the other end of the telescopic coupler. At least one lock slot 201 is provided on the side wall of the drawbar 2 .
  • the two ends of the drawbar 2 are respectively a first end and a second end, wherein the first end is sleeved inside the casing 1 and is restricted in the casing 1 without falling out of the casing 1, and the second end is connected to the casing 1.
  • the other end of the telescopic coupler is connected and can extend or retract from the housing 1 relative to the open end 101 .
  • Telescopic component 4 It includes a fixed end 41 and a telescopic end 42 that can be extended or retracted relative to the fixed end 41.
  • the fixed end is connected and arranged in the housing 1, and the telescopic end 42 is connected to the traction rod 2, which can pass through the housing 1
  • the opening end 101 of the telescopic assembly 4 stretches out; the telescopic movement of the telescopic assembly 4 can retract the drawbar 2 into the space of the housing 1, or push it out of the housing 1; this telescopic movement controls the expansion and contraction of the telescopic coupler.
  • the telescopic cylinder 401 is used in this embodiment; besides the telescopic cylinder, telescopic electric cylinders or other types of telescopic driving structures can also be used.
  • Locking ring 3 Referring to Fig. 4 for structure, it is set inside the opening end 101 of the housing, forming a non-fixed connection structure with the housing 1; in this embodiment, the housing 1 is cylindrical, and the locking ring 3 is Ring-shaped, the outer diameter of the locking ring 3 is slightly smaller than the inner diameter of the open end 101 of the housing 1, and the two form a sleeve connection structure.
  • the locking ring 3 can rotate in the circumferential direction relative to the inner surface of the opening end 101, but the position of the locking ring 3 in the axial direction of the housing 1 is fixed; It is realized in cooperation with the radial dimension of the locking ring 3, and will not be described in detail here.
  • the locking ring 3 is sleeved on the outside of the drawbar 2 .
  • At least one set of locking block assemblies 5 installed on the locking ring 3, can expand and contract toward the radial direction of the housing 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 such that when the drawbar 2 is retracted into the housing 1 , the locking block assemblies 5 can be inserted into the locking slots 201 .
  • the number of lock grooves 201 is two, which are arranged symmetrically.
  • the lock block assembly 5 includes two groups, and its position on the lock ring 3 corresponds to the position of the lock groove 201, so as to ensure It can be smoothly inserted into the lock groove 201, so that the contact area and force value of the lock block assembly 5 and the lock groove 201 can be improved without affecting the normal expansion and contraction of the draw bar 2, thereby improving the impact of the lock block assembly 5 on the draw bar. 2 Locking stability. In addition to two, other numbers of lock grooves 201 and the matching structure of the lock block assembly 5 can also be selected according to needs.
  • the lock block assembly 5 can be inserted into the lock groove 201, the axial movement of the drawbar 2 is restricted, and the retracted state is locked.
  • the locking ring 3 is rotated to make the lock block assembly 5 escape from the lock groove 201 to complete the unlocking.
  • the setting of the locking block assembly 5 to be expandable in the radial direction of the housing 1 can be understood as: the locking block assembly 5 protrudes relative to the inner surface of the locking ring 3 in a natural state without external force, and The locking block assembly 5 can be compressed to be flush with the inner surface of the locking ring 3 under the action of external force.
  • the locking block assembly 5 is retracted into the locking ring 3 under the pressing action of the outer wall of the drawbar 2 without affecting the retraction movement of the drawbar 2, and, when After the drawbar 2 is retracted, when the lock groove 201 on the lock ring 3 is turned to face the lock block assembly 5, the external force disappears, and the lock block assembly 5 returns to its natural state and is inserted into the lock groove 201 to realize the retraction of the drawbar 2. lock back.
  • the simplest implementation structure of the lock block assembly 5 is to adopt a locking piece with certain elasticity and rigidity.
  • the lock block assembly 5 includes:
  • Elastic member 501 installed on the locking ring 3, it can expand and contract in the radial direction of the housing 1; specifically, one end of the elastic member 501 is installed on the locking ring 3, and its other end faces the center of the locking ring 3 and can be locked along the The ring 3 expands and contracts in the radial direction to form a telescopic end;
  • Locking block 502 installed on the telescopic end of the elastic member 501;
  • the length of the elastic member 501 is configured to be in a compressed state when in contact with the outer wall of the draw bar 2 ; the size of the locking block 502 is configured to be inserted into the lock slot 201 and restricted from moving along the axial direction of the draw bar 2 by the lock slot 201 .
  • the lock block assembly 5 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 installed on the locking ring 3, and the locking block assembly 5 can be regularly maintained by disassembling.
  • the installation block 503 includes a main body portion 5031 of the installation block and a protrusion of the installation block protruding relative to the main body portion 5031 of the installation block.
  • the elastic member 501 is installed on the protruding part 5032 of the mounting block.
  • the elastic member 501 can be a spring
  • the protruding part 5032 of the mounting block is formed as a protruding post, and the spring is sleeved on the protruding post.
  • the locking ring 3 is provided with a through hole 301, and the side of the through hole 301 close to the outer circumference of the housing 1 is oppositely provided with a first stepped structure 3011, and the mounting block protrusion 5032 can pass through the first stepped structure 3011 The gap between them is penetrated, the first step structure 3011 is provided with a threaded hole 3013, and the main body part 5031 of the installation block is installed on the first step structure 3011 through the fixing piece 505, so as to solve the problem between the lock block assembly 5 and the lock ring 3 between fixed issues.
  • the side of the through hole 301 close to the inner circumference of the housing 1 is oppositely provided with a second stepped structure 3012, and a gap space is formed between the first stepped structure 3011 and the second stepped structure 3012; as shown in Fig. 5 and Fig.
  • the outer periphery of the locking block 502 includes a locking block protrusion 5021 , and the locking block protrusion 5021 is stuck 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 limited in the gap between the first stepped structure 3011 and the second stepped structure 3012 .
  • the locking block 502 also includes a locking block body part 5022.
  • the locking block body part 5022 can pass between the second stepped structures 3012 and protrude from the inner surface of the locking ring 3.
  • the locking block assembly 5 faces the locking groove 201, the locking block The top end of the main body 5022 can be inserted into the lock groove 201 to form a locking effect.
  • the "side of the through hole 301 close to the outer circumference of the housing 1" refers to the side of the through hole 301 located on the outside in the radial direction of the housing 1, and the “side close to the inner circumference of the housing 1 “One side of the circumference” refers to the side on the inner side of the through hole 301 in the radial direction of the housing 1 .
  • both the first stepped structure 3011 and the second stepped structure 3012 can be realized by the following structure: it can be two parts of stepped blocks arranged opposite to each other on the inner peripheral wall of the through hole 301, or it can be a circumferential radial convex block arranged along the inner peripheral wall of the through hole. step out.
  • the locking block 502 can be made of wear-resistant materials. Meanwhile, in order to solve this problem, in some embodiments of the present application, the head of the locking block 502 is provided with a wearing pad 504, and the wearing pad 504 is made of a wear-resistant material.
  • the locking groove 201 is in the shape of an arc concave from both sides to the middle, so that during the process of rotating the locking ring 3 .
  • the locking ring 3 is rotated, and the locking block 502 can be smoothly slid into the lock along the arc-shaped surface of one side during the process of the locking block 502 coming out from both sides of the locking groove 201.
  • first radial projections 302 are arranged at intervals along the inner peripheral wall of the locking ring 3
  • second radial projections are arranged at intervals along the outer wall of the draw bar 2 .
  • the second radially protruding block 202 is located on the side close to the housing 1 relative to the lock groove 201; the gap between any two first radially protruding blocks 302 can allow the second radially protruding block 202
  • the first radially protruding block 302 is opposite to the second radially protruding block 202 , the retraction movement of the drawbar 2 to the casing is restricted, and the drawbar 2 is in a state of extending and locking.
  • the first radially protruding blocks 302 are of equal size and arranged in equal intervals
  • the second radially protruding blocks 202 are of equal size and are arranged in equal intervals
  • gap grooves 3021 are formed between the first radially protruding blocks 302
  • the gap groove 3021 between adjacent first radially protruding pieces 302 allows the second radially protruding pieces 202 to pass through
  • the gap between adjacent second radially protruding pieces 202 allows the first radially protruding pieces 302 to pass through. through.
  • the lock block assembly 5 is arranged at the first radially protruding block 302, that is, the through hole 301 is opened on the first radially protruding block 302, and the corresponding lock block assembly 5 is also installed at the first radially protruding block 302.
  • the locking groove 201 is arranged on the extension line of the second radially protruding block 202 .
  • the extension line refers to the position of the second radially protruding block 202 as a reference, along the direction of the outer surface of the drawbar 2, extending in a direction away from the side of the housing 1, and is located on the outer surface of the side away from the housing 1 superior.
  • the locking groove 201 and the second radially protruding block 202 are located on the outer surface of the draw bar 2 and that the locking groove 201 and the second radially protruding block 202 are located on the same axial direction of the draw bar 2 .
  • the lock block assembly 5 and the lock groove 201 cooperate with the position setting of the first radially protruding block 302 and the second radially protruding block 202 , so that the extension lock and the retraction lock cooperate.
  • the outer wall of the locking ring 3 is provided with a handle installation hole 303
  • the handle 6 is installed at the handle installation hole 303
  • the open end 101 of the housing 1 is provided with a handle hole 102 extending along the circumferential direction of the housing 1
  • the handle 6 passes through the handle hole 102
  • the circumferential length of the handle hole 102 is configured to: the first radially protruding piece 302 can be rotated to the position of the two adjacent second radially protruding pieces 202 opposite to it.
  • the gap can also be rotated to be opposite to the second radially protruding block 202 .
  • the opposite mentioned here refers to the two second radially protruding blocks 202 closest to the first radially protruding block 302 in the axial extension direction of the draw bar 2 .
  • the two ends of the handle hole 102 in the circumferential direction of the housing 1 are respectively the unlocking position and the locking position, and the unlocking position and the locking position meet the following conditions respectively: when the handle 6 is at the unlocking position of the handle hole 102, the position of the locking ring 3 is such that the first radially protruding block 302 faces two adjacent ones in the axial direction of the draw bar 2 The gap between the second radially protruding block 202 of the handle 202 realizes unlocking; when the handle 6 is rotated to the locking position of the handle hole 102, the position of the locking ring 3 is such that the first radially protruding block 302 is on the axis of the drawbar 2 Facing the second radially protruding block 202 upwards, the extension locking or retracting locking is realized.
  • the telescopic locking device provided by the present application has the following working principle.
  • the drawbar 2 is in a fully retracted state, and the handle 6 is in the locking position of the handle hole 102 .
  • the lock block assembly 5 is in the locking position, forming a latch type lock with the lock groove 201 .
  • the drawbar 2 is in a fully extended state, and the handle 6 is located at the locking position of the handle hole 102.
  • the second radially protruding piece 202 is between the first radially protruding piece 302 of the locking ring 3.
  • the clearance groove 3021 of the dislocation, the spline lock is formed between the locking ring 3 and the drawbar 2 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The application provides a telescopic coupler locking device, comprising: a housing, which can be connected to one end of a telescopic coupler; a traction rod: which can be connected to the other end of the telescopic coupler, and at least one locking slot is formed on a side wall; a telescopic assembly: a fixed end is connected inside the housing, and a telescopic end is connected to a traction rod; a locking ring: which is sleeved on the inner side of an open end of the housing; at least one locking block assembly: which is installed on the locking ring and can move in a telescopic manner in the radial direction of the housing. The number of the locking slot corresponds to the number of the locking block assembly. When the traction rod retracts into the housing, the locking block assembly can be inserted into the locking slot to limit the extending motion of the traction rod.

Description

伸缩车钩锁定装置Telescopic coupler locking device
本申请要求在2022年05月31日提交中国专利局、申请号为202210614567.2、申请名称为“伸缩车钩锁定装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202210614567.2 and the application name "Telescopic Coupler Locking Device" submitted to the China Patent Office on May 31, 2022, the entire contents of which are incorporated in this application by reference.
技术领域technical field
本申请涉及列车车钩技术领域，尤其涉及一种伸缩车钩锁定装置。The present application relates to the technical field of train couplers, in particular to a telescopic coupler locking device.
背景技术Background technique
伸缩装置作为列车车钩的关键部件，能够保证车钩在连挂运行时处于伸出状态，在无需连挂运行时处于缩回状态，节省列车前端空间。As a key component of the train coupler, the telescopic device can ensure that the coupler is in an extended state when it is connected to the hook, and is in a retracted state when it does not need to be connected to run, saving the space at the front end of the train.
为了保证车钩在伸出或缩回后能够保持当前状态，要求伸缩装置具有可靠的锁定机构，需要具有伸出锁定和缩回锁定的功能。目前车钩伸缩装置的锁定方式主要包括以下方式：(1)插销式，其结构简单，但受力截面积较小；(2)挡块式，其结构也较为简单，但接触面为两个半径不同的弧面，因此时间久后接触面处容易磨损并产生变形；(3)花键式。In order to ensure that the coupler can maintain the current state after it is extended or retracted, the telescopic device is required to have a reliable locking mechanism, and it needs to have the functions of extension locking and retraction locking. At present, the locking methods of the coupler telescopic device mainly include the following methods: (1) the pin type, which has a simple structure, but the force cross-sectional area is small; (2) the block type, which has a relatively simple structure, but the contact surface is two radii Different arc surfaces, so the contact surface is easy to wear and deform after a long time; (3) spline type.
中国申请CN108839668A专利提出一种车钩伸缩装置及车钩，其中车钩伸缩装置包括壳体，以及可沿壳体伸缩的牵引杆，壳体套接于牵引杆的外部，牵引杆的外侧面固定设置有限位块，壳体的内部套设有可与限位块接触的锁定环，锁定环与壳体同轴，锁定环与壳体可转动连接，锁定环的内表面沿轴向开设有通槽，通槽的形状与限位块对应，以在当通槽与限位块对中时，使限位块穿过通槽，继而在当牵引杆伸出完成后，通过锁定环的转动实现对限位块的阻挡，完成对牵引杆的伸出锁定。The Chinese patent application CN108839668A proposes a coupler telescopic device and a coupler, wherein the coupler telescopic device includes a casing, and a drawbar that can expand and contract along the casing. The inside of the casing is provided with a locking ring that can be in contact with the limit block. The locking ring is coaxial with the casing, and the locking ring is rotatably connected to the casing. The shape of the groove corresponds to the limit block, so that when the through slot and the limit block are aligned, the limit block passes through the through slot, and then when the drawbar is extended, the rotation of the locking ring realizes the limit Block blocking, complete the extended locking of the tow bar.
然而，上述车钩伸缩装置缩回锁定采用插销式，受力面积小，数量单一， 缩回锁定不可靠。However, the retraction lock of the above-mentioned coupler telescopic device adopts a bolt type, the force bearing area is small, the number is single, and the retraction lock is unreliable.
发明内容Contents of the invention
本申请的目的在于解决上述技术问题之一，提供一种新型伸缩车钩锁定装置。The purpose of the present application is to solve one of the above-mentioned technical problems, and to provide a novel telescopic coupler locking device.
为实现上述目的，本申请实施例提供一种伸缩车钩锁定装置，包括：In order to achieve the above purpose, an embodiment of the present application provides a telescopic coupler locking device, including:
壳体：包括开口端，与开口端相对的一端可被连接至伸缩车钩的一端；housing: including an open end, the end opposite the open end being connectable to an end of the telescoping coupler;
牵引杆：可被连接至伸缩车钩的另一端，牵引杆的侧壁上设置有至少一个锁槽；Tow bar: can be connected to the other end of the telescopic coupler, the side wall of the tow bar is provided with at least one lock slot;
伸缩组件：包括固定端和伸缩端，固定端连接设置在壳体内，伸缩端与牵引杆连接，可经壳体开口端伸出；伸缩组件伸缩运动可将牵引杆收回至壳体空间内，或推送至壳体外；Telescopic assembly: including a fixed end and a telescopic end, the fixed end is connected to the casing, the telescopic end is connected to the drawbar, and can be stretched out through the open end of the casing; the telescopic movement of the telescopic assembly can retract the drawbar into the space of the casing, or push out of the housing;
锁定环：套装在壳体开口端内侧；Locking ring: set inside the open end of the shell;
至少一组锁块组件：安装在锁定环上，包括弹性件，可朝向壳体径向方向伸缩；At least one set of locking block components: installed on the locking ring, including elastic parts, which can expand and contract toward the radial direction of the housing;
锁槽的数量与锁块组件的数量对应，当牵引杆缩回至壳体内时，锁块组件可***锁槽，限制牵引杆的伸出运动。The number of lock slots corresponds to the number of lock block assemblies. When the drawbar is retracted into the housing, the lock block assemblies can be inserted into the lock slots to limit the stretching movement of the drawbar.
本申请一些实施例中，锁块组件包括：In some embodiments of the present application, the lock block assembly includes:
弹性件：安装在锁定环上，可朝向壳体的径向方向伸缩；Elastic part: installed on the locking ring, it can expand and contract towards the radial direction of the housing;
锁定块：安装在弹性件的伸缩端；Locking block: installed on the telescopic end of the elastic piece;
弹性件的长度被配置为：与牵引杆外壁接触时呈压缩状态；锁定块的尺寸被配置为：可***锁槽，被锁槽限制沿牵引杆轴向方向的运动。The length of the elastic member is configured to be in a compressed state when in contact with the outer wall of the draw bar; the size of the locking block is configured to be inserted into the lock slot, and the movement along the axial direction of the draw bar is restricted by the lock slot.
本申请一些实施例中，锁块组件进一步包括安装在锁定环上的安装块，弹性件安装在安装块上。In some embodiments of the present application, the locking block assembly further includes a mounting block mounted on the locking ring, and the elastic member is mounted on the mounting block.
本申请一些实施例中，安装块包括安装块主体部和相对安装块主体部凸出的安装块凸出部，弹性件安装在安装块凸出部上；锁定环上设置有通孔，通孔靠近壳体外周的一侧设置有第一台阶结构，凸出部可经第一台阶结构之间的间隙穿过，安装块主体部安装在第一台阶结构上。In some embodiments of the present application, the mounting block includes a main body of the mounting block and a protruding portion of the mounting block that protrudes relative to the main body of the mounting block, and the elastic member is installed on the protruding portion of the mounting block; a through hole is provided on the locking ring, and the through hole A first stepped structure is provided on a side close to the outer periphery of the housing, the protruding part can pass through the gap between the first stepped structures, and the main body of the mounting block is installed on the first stepped structure.
本申请一些实施例中，通孔靠近壳体内周的一侧设置有第二台阶结构，锁定块外周包括锁定块凸出部，锁定块凸出部卡在第二台阶结构处，以限制锁定块经通孔脱出。In some embodiments of the present application, a second step structure is provided on the side of the through hole close to the inner periphery of the housing, and the outer periphery of the locking block includes a locking block protrusion, and the locking block protrusion is stuck at the second step structure to limit the locking block. Comes out through the through hole.
本申请一些实施例中，锁定块的头部设置有磨耗垫。In some embodiments of the present application, the head of the locking block is provided with a wear pad.
本申请一些实施例中，沿牵引杆的周向方向，锁槽呈由两侧向中部下凹的圆弧状。In some embodiments of the present application, along the circumferential direction of the drawbar, the locking groove is in the shape of an arc concave from both sides to the middle.
本申请一些实施例中，沿锁定环内周壁间隔设置有若干第一径向凸出块，沿牵引杆外壁间隔设置有若干第二径向凸出块，第二径向凸出块相对于锁槽位于靠近壳体的一侧；任意两个第一径向凸出块之间的间隙可允许第二径向凸出块通过，第一径向凸出块与第二径向凸出块相对时，牵引杆缩回至壳体的运动被限制。In some embodiments of the present application, several first radially protruding blocks are arranged at intervals along the inner peripheral wall of the locking ring, and several second radially protruding blocks are arranged at intervals along the outer wall of the draw bar, and the second radially protruding blocks are relatively opposite to the locking ring. The slot is located on one side close to the housing; the gap between any two first radially protruding pieces can allow the passage of the second radially protruding piece, and the first radially protruding piece is opposite to the second radially protruding piece , the retraction of the drawbar to the housing is restricted.
本申请一些实施例中，锁块组件设置在第一径向凸出块处，锁槽设置在第二径向凸出块的延长线上。In some embodiments of the present application, the locking block assembly is arranged at the first radially protruding block, and the locking groove is arranged on the extension line of the second radially protruding block.
本申请一些实施例中，锁定环外壁上设置有手柄，壳体开口端设置有沿壳体周向方向延伸的手柄孔，手柄经手柄孔穿出，手柄孔的周向长度被配置为：可使第一径向凸出块转动到与其相对的两个相邻的第二径向凸出块的间隙处，也可转动到使第一径向凸出块与第二径向凸出块相对。In some embodiments of the present application, a handle is provided on the outer wall of the locking ring, and a handle hole extending along the circumferential direction of the housing is provided at the open end of the housing. The handle passes through the handle hole, and the circumferential length of the handle hole is configured as follows: Rotate the first radial protruding block to the gap between two adjacent second radial protruding blocks opposite to it, or rotate to make the first radial protruding block opposite to the second radial protruding block .
本申请提供的伸缩车钩锁定装置，其有益效果在于：The telescopic coupler locking device provided by the application has the beneficial effects of:
1、本申请至少一个实施例所提供的伸缩车钩锁定装置，通过设置锁块组 件与锁槽进行配合，且借助锁定环和牵引杆本身运动过程中两者的配合实现对牵引杆的缩回锁定，简化了结构，增大了受力面积，提高了缩回锁定的可靠性。1. In the telescopic coupler locking device provided by at least one embodiment of the present application, the lock block assembly is set to cooperate with the lock groove, and the retraction locking of the drawbar is realized by the cooperation of the locking ring and the drawbar itself during the movement process , simplifies the structure, increases the stress area, and improves the reliability of retraction locking.
2、本申请至少一个实施例所提供的伸缩车钩锁定装置，通过在锁定环上设置锁块组件和第一径向凸出块，并配合牵引杆外壁上设置的第二径向凸出块，相对于现有的伸缩机构，避免了同一伸缩装置多个部位分别采用不同锁定机构的复杂性，简化了壳体内部和外部的结构，有利于将外部的驱动结构设置于壳体的内部，进而减小了占用空间，同时大大降低了车钩的重量。2. In the telescopic coupler locking device provided by at least one embodiment of the present application, the lock block assembly and the first radially protruding block are arranged on the locking ring, and the second radially protruding block is arranged on the outer wall of the drawbar, Compared with the existing telescopic mechanism, it avoids the complexity of using different locking mechanisms for multiple parts of the same telescopic device, simplifies the internal and external structures of the housing, and is conducive to setting the external driving structure inside the housing, thereby The occupied space is reduced, and the weight of the coupler is greatly reduced at the same time.
3、本申请至少一个实施例所提供的伸缩车钩锁定装置，通过转动锁定环可以同时实现牵引杆伸出与缩回状态下的锁定功能，锁定环与牵引杆形成花键式锁定机构，用于承受伸出锁定时较大的承力，而锁块组件与插槽形成插销式锁定机构，结构简单，并且用于承受缩回锁定时较小的承力，因此本申请车钩伸缩装置进一步简化了结构，相对于现有伸缩机构，简化了锁定装置的锁定操作，提高了车钩伸缩的效率。3. The telescopic coupler locking device provided by at least one embodiment of the present application can simultaneously realize the locking function of the drawing rod in the extended and retracted states by rotating the locking ring. The locking ring and the drawing rod form a spline-type locking mechanism for It bears a larger bearing force when extended and locked, while the lock block assembly and the slot form a latch-type locking mechanism, which has a simple structure and is used to withstand a smaller bearing force when retracted and locked. Therefore, the coupler telescopic device of this application further simplifies Compared with the existing telescopic mechanism, the structure simplifies the locking operation of the locking device and improves the telescopic efficiency of the coupler.
4、本申请至少一个实施例所提供的伸缩车钩锁定装置，在牵引杆需求伸出时，转动锁定环，可以保证解锁牵引杆缩回锁定状态与牵引杆能够满足伸出需求状态的同步性，提高了车钩伸缩机构运动的有效性。4. In the telescopic coupler locking device provided by at least one embodiment of the present application, when the drawbar needs to be extended, the locking ring can be rotated to ensure the synchronization between unlocking the retracted locking state of the drawbar and the state that the drawbar can meet the extension requirement. The effectiveness of the movement of the telescopic mechanism of the coupler is improved.
本申请的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本申请而了解。本申请的目的和其他优点可通过在说明书和附图中所指出的结构来实现和获得。Additional features and advantages of the application 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 application. The objectives and other advantages of the application will be realized and attained by the structure pointed out in the written description and drawings.
附图说明Description of drawings
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附 图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.
图1为本申请实施例的伸缩车钩锁定装置的***图；Fig. 1 is the exploded view of the telescopic coupler locking device of the embodiment of the present application;
图2为本申请实施例的伸缩车钩锁定装置的牵引杆和锁定环的***图；Figure 2 is an exploded view of the drawbar and locking ring of the telescopic coupler locking device of the embodiment of the present application;
图3为本申请实施例的牵引杆的结构示意图；Fig. 3 is the structural representation of the draw bar of the embodiment of the present application;
图4为本申请实施例的锁定环的结构示意图；Fig. 4 is a schematic structural diagram of a locking ring according to an embodiment of the present application;
图5为本申请实施例的锁块组件的***图；Figure 5 is an exploded view of the lock block assembly of the embodiment of the present application;
图6为本申请实施例的伸缩车钩锁定装置的牵引杆收缩后锁定状态的剖视图；Fig. 6 is a cross-sectional view of the locking state of the telescopic coupler locking device according to the embodiment of the present application after the drawbar shrinks;
图7为图6中锁块组件部位的局部放大图；Fig. 7 is a partial enlarged view of the locking block assembly in Fig. 6;
图8a为本申请实施例的伸缩车钩锁定装置的牵引杆收缩后解锁状态的内部结构示意图；Fig. 8a is a schematic diagram of the internal structure of the telescopic coupler locking device of the embodiment of the present application in the unlocked state after the retraction of the drawbar;
图8b为本申请实施例的伸缩车钩锁定装置的牵引杆收缩后锁定状态的内部结构示意图；Fig. 8b is a schematic diagram of the internal structure of the telescopic coupler locking device of the embodiment of the present application when the drawbar is retracted and locked;
图9a为本申请实施例的伸缩车钩锁定装置的牵引杆收缩后解锁状态的外部结构示意图；Fig. 9a is a schematic diagram of the external structure of the telescopic coupler locking device according to the embodiment of the present application, in which the drawbar is retracted and unlocked;
图9b为本申请实施例的伸缩车钩锁定装置的牵引杆收缩后锁定状态的外部结构示意图Fig. 9b is a schematic diagram of the external structure of the telescopic coupler locking device according to the embodiment of the present application when the drawbar is retracted and locked.
图10为本申请实施例的伸缩车钩锁定装置的牵引杆在伸出过程中的内部结构示意图；Fig. 10 is a schematic diagram of the internal structure of the drawbar of the telescopic coupler locking device of the embodiment of the present application during the extension process;
图11a为本申请实施例的伸缩车钩锁定装置的牵引杆伸出后解锁状态的外部结构示意图；Fig. 11a is a schematic diagram of the external structure of the locking device of the telescopic coupler according to the embodiment of the present application in the unlocked state after the drawbar is stretched out;
图11b为本申请实施例的伸缩车钩锁定装置的牵引杆伸出后锁定状态的 外部结构示意图；Fig. 11b is a schematic diagram of the external structure of the telescopic coupler locking device of the embodiment of the present application after the drawbar is stretched out and locked;
1-壳体，101-开口端，102-手柄孔；1-shell, 101-open end, 102-handle hole;
2-牵引杆，201-锁槽，202-第二径向凸出块；2-drawing rod, 201-lock groove, 202-the second radially protruding block;
3-锁定环，301-通孔，3011-第一台阶结构，3012-第二台阶结构，3013-螺纹孔，302-第一径向凸出块，3021-间隙槽，303-手柄安装孔；3-locking ring, 301-through hole, 3011-first step structure, 3012-second step structure, 3013-threaded hole, 302-first radial protruding block, 3021-clearance groove, 303-handle installation hole;
4-伸缩组件，41-固定端；42-伸缩端；401-伸缩气缸；4-telescopic assembly, 41-fixed end; 42-telescopic end; 401-telescopic cylinder;
5-锁块组件，501-弹性件，502-锁定块，5021-锁定块凸出部，5022-锁定块主体部，503-安装块，5031-安装块主体部，5032-安装块凸出部；504-磨耗垫，505-固定件；5-lock block assembly, 501-elastic piece, 502-lock block, 5021-lock block protrusion, 5022-lock block main body, 503-installation block, 5031-installation block main body, 5032-installation block protrusion ; 504-abrasion pad, 505-fixing piece;
6-手柄。6-handle.
具体实施方式Detailed ways
为了使本申请所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。此外，应当理解，在没有进一步叙述的情况下，一个实施方式中的元件、结构和特征也可以有益地结合到其他实施方式中。In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Furthermore, it is to be understood that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.
在本申请的描述中，需要说明的是：本申请所述的固定连接可以是可拆卸固定连接，也可以是一体化固定连接；术语“轴向”、“径向”等指示的方位或位置关系为基于附图所示的位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制；语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of this application, it should be noted that: the fixed connection described in this application can be a detachable fixed connection, or an integrated fixed connection; the orientation or position indicated by the terms "axial" and "radial" The relationship is based on the positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the present application; the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.
本申请实施例提供一种伸缩车钩锁定装置，可用于伸缩式车钩的伸出状 态锁定和缩回状态锁定。The embodiment of the present application provides a locking device for a telescopic coupler, which can be used for locking the extended state and the retracted state of the telescopic coupler.
锁定装置的结构包括壳体1、牵引杆2、伸缩组件4、锁定环3和锁块组件5，其***结构参考图1和图2。The structure of the locking device includes a housing 1, a towing rod 2, a telescopic assembly 4, a locking ring 3 and a locking block assembly 5, and its exploded structure refers to Fig. 1 and Fig. 2 .
壳体1：包括开口端101，与开口端101相对的一端可被连接至伸缩车钩的一端；壳体1的与开口端101相对的这一端也可以被设计为开口结构，开口结构上安装有封闭组件，便于器件的安装和维护。此处所述的“与开口端101相对的一端”是指得壳体1远离开口端101的另一端。Housing 1: including an open end 101, the end opposite to the open end 101 can be connected to one end of the telescopic coupler; the end of the housing 1 opposite to the open end 101 can also be designed as an open structure, on which a Closed components facilitate device installation and maintenance. The “end opposite to the open end 101 ” mentioned here refers to the other end of the casing 1 away from the open end 101 .
牵引杆2：如图3所示，可被连接至伸缩车钩的另一端，牵引杆2侧壁上设置有至少一个锁槽201。具体地，牵引杆2的两端分别为第一端和第二端，其中，第一端套接于壳体1内部且被限制在壳体1内而不脱出壳体1，第二端与伸缩车钩的另一端连接并可相对于开口端101从壳体1内伸出或缩回。Drawbar 2: as shown in FIG. 3 , it can be connected to the other end of the telescopic coupler. At least one lock slot 201 is provided on the side wall of the drawbar 2 . Specifically, the two ends of the drawbar 2 are respectively a first end and a second end, wherein the first end is sleeved inside the casing 1 and is restricted in the casing 1 without falling out of the casing 1, and the second end is connected to the casing 1. The other end of the telescopic coupler is connected and can extend or retract from the housing 1 relative to the open end 101 .
伸缩组件4：其包括固定端41以及可相对于固定端41伸出或缩回的伸缩端42，固定端连接设置在壳体1内，伸缩端42与牵引杆2连接，可经壳体1的开口端101伸出；伸缩组件4的伸缩运动可将牵引杆2收回至壳体1空间内，或推送至壳体1外；这种伸缩运动控制伸缩车钩的伸缩。本实施例采用的为伸缩气缸401；除伸缩气缸外，也可以采用伸缩电缸或其他类型的伸缩驱动结构。Telescopic component 4: It includes a fixed end 41 and a telescopic end 42 that can be extended or retracted relative to the fixed end 41. The fixed end is connected and arranged in the housing 1, and the telescopic end 42 is connected to the traction rod 2, which can pass through the housing 1 The opening end 101 of the telescopic assembly 4 stretches out; the telescopic movement of the telescopic assembly 4 can retract the drawbar 2 into the space of the housing 1, or push it out of the housing 1; this telescopic movement controls the expansion and contraction of the telescopic coupler. The telescopic cylinder 401 is used in this embodiment; besides the telescopic cylinder, telescopic electric cylinders or other types of telescopic driving structures can also be used.
锁定环3：结构参考图4，套装在壳体开口端101内侧，其与壳体1之间形成一种非固定连接结构；本实施例中，壳体1为圆筒状，锁定环3为圆环状，锁定环3的外径略小于壳体1开口端101的内径，二者形成套装连接结构。锁定环3可相对于开口端101的内表面沿周向转动，但锁定环3在壳体1轴向上的位置固定；具体实现方式可以如图1所示，通过壳体1的径向尺 寸和锁定环3的径向尺寸配合实现，本处不做详细描述。此外，可以理解的是，锁定环3套接在牵引杆2的外侧。Locking ring 3: Referring to Fig. 4 for structure, it is set inside the opening end 101 of the housing, forming a non-fixed connection structure with the housing 1; in this embodiment, the housing 1 is cylindrical, and the locking ring 3 is Ring-shaped, the outer diameter of the locking ring 3 is slightly smaller than the inner diameter of the open end 101 of the housing 1, and the two form a sleeve connection structure. The locking ring 3 can rotate in the circumferential direction relative to the inner surface of the opening end 101, but the position of the locking ring 3 in the axial direction of the housing 1 is fixed; It is realized in cooperation with the radial dimension of the locking ring 3, and will not be described in detail here. In addition, it can be understood that the locking ring 3 is sleeved on the outside of the drawbar 2 .
至少一组锁块组件5：安装在锁定环3上，可朝向壳体1的径向方向伸缩；At least one set of locking block assemblies 5: installed on the locking ring 3, can expand and contract toward the radial direction of the housing 1;
锁槽201的数量与锁块组件5的数量对应，锁槽201的位置被配置为：当牵引杆2缩回至壳体1内时，锁块组件5可***锁槽201。本实施例中，如图6所示，锁槽201的数量为两个，呈对称设置，锁块组件5包括两组，其在锁定环3上的位置与锁槽201的位置对应，以保证可顺利***锁槽201，以此在不影响牵引杆2正常伸缩的前提下，能够提高锁块组件5与锁槽201的接触面积和力值均布，进而提高了锁块组件5对牵引杆2锁定的稳定性。除两个外，也可根据需要选择其他数量的锁槽201和锁块组件5配合结构。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 such that when the drawbar 2 is retracted into the housing 1 , the locking block assemblies 5 can be inserted into the locking slots 201 . In this embodiment, as shown in Figure 6, the number of lock grooves 201 is two, which are arranged symmetrically. The lock block assembly 5 includes two groups, and its position on the lock ring 3 corresponds to the position of the lock groove 201, so as to ensure It can be smoothly inserted into the lock groove 201, so that the contact area and force value of the lock block assembly 5 and the lock groove 201 can be improved without affecting the normal expansion and contraction of the draw bar 2, thereby improving the impact of the lock block assembly 5 on the draw bar. 2 Locking stability. In addition to two, other numbers of lock grooves 201 and the matching structure of the lock block assembly 5 can also be selected according to needs.
以上结构，在牵引杆2缩回至壳体1内部后，通过转动锁定环3，可使得锁块组件5***锁槽201，牵引杆2的轴向运动被限制，实现缩回状态的锁定。当需要解锁时，转动锁定环3，使锁块组件5从锁槽201脱出，完成解锁。With the above structure, after the drawbar 2 is retracted into the housing 1, by rotating the locking ring 3, the lock block assembly 5 can be inserted into the lock groove 201, the axial movement of the drawbar 2 is restricted, and the retracted state is locked. When unlocking is required, the locking ring 3 is rotated to make the lock block assembly 5 escape from the lock groove 201 to complete the unlocking.
在以上实施例中，锁块组件5设置为可朝向壳体1的径向方向伸缩可以理解为：锁块组件5在没有外力作用的自然状态下相对于锁定环3的内表面凸出，且锁块组件5在外力作用下可被压缩至与锁定环3的内表面平齐。在牵引杆2缩回壳体1内的过程中，锁块组件5在牵引杆2的外壁的挤压作用下向锁定环3内缩回而不影响牵引杆2的缩回运动，并且，当牵引杆2缩回后，通过转动锁定环3使其上的锁槽201正对锁块组件5时，外力消失，锁块组件5恢复自然状态并***锁槽201内实现对牵引杆2的缩回锁定。当需要解锁时，只需再次转动锁定环3使得锁块组件5与锁槽201错位，锁块组 件5在牵引杆2的外壁的挤压作用下再次向锁定环3内缩回，其对牵引杆2的锁定作用消失。In the above embodiments, the setting of the locking block assembly 5 to be expandable in the radial direction of the housing 1 can be understood as: the locking block assembly 5 protrudes relative to the inner surface of the locking ring 3 in a natural state without external force, and The locking block assembly 5 can be compressed to be flush with the inner surface of the locking ring 3 under the action of external force. During the retraction process of the drawbar 2 into the housing 1, the locking block assembly 5 is retracted into the locking ring 3 under the pressing action of the outer wall of the drawbar 2 without affecting the retraction movement of the drawbar 2, and, when After the drawbar 2 is retracted, when the lock groove 201 on the lock ring 3 is turned to face the lock block assembly 5, the external force disappears, and the lock block assembly 5 returns to its natural state and is inserted into the lock groove 201 to realize the retraction of the drawbar 2. lock back. When it needs to be unlocked, it is only necessary to turn the locking ring 3 again so that the locking block assembly 5 and the locking groove 201 are misaligned, and the locking block assembly 5 is retracted into the locking ring 3 again under the extrusion effect of the outer wall of the traction rod 2, which has a great impact on the traction. The locking effect of lever 2 disappears.
最简单的锁块组件5的实施结构为采用具有一定弹性和刚性的锁定件。为了实现更稳定的锁定效果，本申请一些实施例中，如图1、图2和图5所示，锁块组件5包括：The simplest implementation structure of the lock block assembly 5 is to adopt a locking piece with certain elasticity and rigidity. In order to achieve a more stable locking effect, in some embodiments of the present application, as shown in Figure 1, Figure 2 and Figure 5, the lock block assembly 5 includes:
弹性件501：安装在锁定环3上，可朝向壳体1的径向方向伸缩；具体地，弹性件501的一端安装在锁定环3上，其另一端面向锁定环3的圆心且可沿锁定环3的径向方向伸缩形成伸缩端；Elastic member 501: installed on the locking ring 3, it can expand and contract in the radial direction of the housing 1; specifically, one end of the elastic member 501 is installed on the locking ring 3, and its other end faces the center of the locking ring 3 and can be locked along the The ring 3 expands and contracts in the radial direction to form a telescopic end;
锁定块502：安装在弹性件501的伸缩端；Locking block 502: installed on the telescopic end of the elastic member 501;
弹性件501的长度被配置为：与牵引杆2外壁接触时呈压缩状态；锁定块502的尺寸被配置为：可***锁槽201，被锁槽201限制沿牵引杆2轴向方向的运动。The length of the elastic member 501 is configured to be in a compressed state when in contact with the outer wall of the draw bar 2 ; the size of the locking block 502 is configured to be inserted into the lock slot 201 and restricted from moving along the axial direction of the draw bar 2 by the lock slot 201 .
更进一步的，为了解决锁块组件5安装和维护的问题，本申请一些实施例中，锁块组件5进一步包括安装在锁定环3上的安装块503，弹性件501安装在安装块503上。安装块503可拆卸地安装在锁定环3上，可通过拆装定期维护锁块组件5。Furthermore, in order to solve the problem of installation and maintenance of the lock block assembly 5 , in some embodiments of the present application, the lock block assembly 5 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 installed on the locking ring 3, and the locking block assembly 5 can be regularly maintained by disassembling.
为解决锁块组件5各部件之间安装的问题，如图7所示，本申请一些实施例中，安装块503包括安装块主体部5031和相对安装块主体部5031凸出的安装块凸出部5032，所述弹性件501安装在安装块凸出部5032上。具体的，弹性件501可采用弹簧，安装块凸出部5032形成为凸出柱，弹簧套装在凸出柱上。In order to solve the problem of installation between the components of the lock block assembly 5, as shown in FIG. 7, in some embodiments of the present application, the installation block 503 includes a main body portion 5031 of the installation block and a protrusion of the installation block protruding relative to the main body portion 5031 of the installation block. part 5032 , the elastic member 501 is installed on the protruding part 5032 of the mounting block. Specifically, the elastic member 501 can be a spring, and the protruding part 5032 of the mounting block is formed as a protruding post, and the spring is sleeved on the protruding post.
参考图2和图4，锁定环3上设置有通孔301，通孔301靠近壳体1外周的一侧相对设置有第一台阶结构3011，安装块凸出部5032可经第一台阶 结构3011之间的间隙穿入，第一台阶结构3011上设置有螺纹孔3013，安装块主体部5031经固定件505安装在第一台阶结构3011上，以此，解决锁块组件5和锁定环3之间的固定问题。2 and 4, the locking ring 3 is provided with a through hole 301, and the side of the through hole 301 close to the outer circumference of the housing 1 is oppositely provided with a first stepped structure 3011, and the mounting block protrusion 5032 can pass through the first stepped structure 3011 The gap between them is penetrated, the first step structure 3011 is provided with a threaded hole 3013, and the main body part 5031 of the installation block is installed on the first step structure 3011 through the fixing piece 505, so as to solve the problem between the lock block assembly 5 and the lock ring 3 between fixed issues.
本申请一些实施例中，通孔301靠近壳体1内周的一侧相对设置有第二台阶结构3012，第一台阶结构3011和第二台阶结构3012之间形成间隙空间；如图5和图7所示，锁定块502外周包括锁定块凸出部5021，锁定块凸出部5021卡在第二台阶结构3012处，以限制锁定块502经通孔301脱出。弹性件501被限制在第一台阶结构3011和第二台阶结构3012之间的间隙内。In some embodiments of the present application, the side of the through hole 301 close to the inner circumference of the housing 1 is oppositely provided with a second stepped structure 3012, and a gap space is formed between the first stepped structure 3011 and the second stepped structure 3012; as shown in Fig. 5 and Fig. As shown in FIG. 7 , the outer periphery of the locking block 502 includes a locking block protrusion 5021 , and the locking block protrusion 5021 is stuck 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 limited in the gap between the first stepped structure 3011 and the second stepped structure 3012 .
锁定块502还包括锁定块主体部5022，锁定块主体部5022可由第二台阶结构3012之间穿过并伸出锁定环3的内表面，当锁块组件5正对锁槽201时，锁定块主体部5022的顶端可***锁槽201内形成锁定作用。The locking block 502 also includes a locking block body part 5022. The locking block body part 5022 can pass between the second stepped structures 3012 and protrude from the inner surface of the locking ring 3. When the locking block assembly 5 faces the locking groove 201, the locking block The top end of the main body 5022 can be inserted into the lock groove 201 to form a locking effect.
此外，在以上实施例中，所述“通孔301靠近壳体1外周的一侧”为通孔301在壳体1的径向方向上位于外侧的一侧，所述“靠近壳体1内周的一侧”为通孔301在壳体1的径向方向上位于内侧的一侧。In addition, in the above embodiments, the "side of the through hole 301 close to the outer circumference of the housing 1" refers to the side of the through hole 301 located on the outside in the radial direction of the housing 1, and the "side close to the inner circumference of the housing 1 “One side of the circumference” refers to the side on the inner side of the through hole 301 in the radial direction of the housing 1 .
其中，第一台阶结构3011和第二台阶结构3012均可以通过如下结构实现：可以是在通孔301内周壁相对设置的两部分台阶块，也可以是沿通孔内周壁设置的一周径向凸出台阶。Wherein, both the first stepped structure 3011 and the second stepped structure 3012 can be realized by the following structure: it can be two parts of stepped blocks arranged opposite to each other on the inner peripheral wall of the through hole 301, or it can be a circumferential radial convex block arranged along the inner peripheral wall of the through hole. step out.
在牵引杆2的伸缩过程中，会与锁定块502产生摩擦，为了提高使用寿命，锁定块502可采用耐磨材料制作。同时，为了解决这一问题，本申请一些实施例中，锁定块502的头部设置有磨耗垫504，磨耗垫504采用耐磨材料制作而成。During the expansion and contraction process of the drawbar 2, friction will be generated with the locking block 502. In order to improve the service life, the locking block 502 can be made of wear-resistant materials. Meanwhile, in order to solve this problem, in some embodiments of the present application, the head of the locking block 502 is provided with a wearing pad 504, and the wearing pad 504 is made of a wear-resistant material.
本申请一些实施例中，如图3所示，沿牵引杆2的周向方向，锁槽201呈由两侧向中部下凹的圆弧状，从而在转动锁定环3的过程中，。当需要解锁 或锁定牵引杆2时，转动锁定环3，在锁定块502从锁槽201的两侧脱出的过程中，锁定块502可顺滑地沿其中一侧的圆弧状表面滑入锁槽201内或滑出锁槽201。In some embodiments of the present application, as shown in FIG. 3 , along the circumferential direction of the drawbar 2 , the locking groove 201 is in the shape of an arc concave from both sides to the middle, so that during the process of rotating the locking ring 3 , When the drawbar 2 needs to be unlocked or locked, the locking ring 3 is rotated, and the locking block 502 can be smoothly slid into the lock along the arc-shaped surface of one side during the process of the locking block 502 coming out from both sides of the locking groove 201. Slot 201 or slide out of lock slot 201.
本申请一些实施例中，如图2-图4所示，沿锁定环3内周壁间隔设置有若干第一径向凸出块302，沿牵引杆2外壁间隔设置有若干第二径向凸出块202，第二径向凸出块202相对于锁槽201位于靠近壳体1的一侧；任意两个第一径向凸出块302之间的间隙可允许第二径向凸出块202通过，第一径向凸出块302与第二径向凸出块202相对时，牵引杆2缩回至壳体的运动被限制，牵引杆2处于伸出锁定状态。In some embodiments of the present application, as shown in FIGS. 2-4 , several first radial projections 302 are arranged at intervals along the inner peripheral wall of the locking ring 3 , and several second radial projections are arranged at intervals along the outer wall of the draw bar 2 . Block 202, the second radially protruding block 202 is located on the side close to the housing 1 relative to the lock groove 201; the gap between any two first radially protruding blocks 302 can allow the second radially protruding block 202 By means of this, when the first radially protruding block 302 is opposite to the second radially protruding block 202 , the retraction movement of the drawbar 2 to the casing is restricted, and the drawbar 2 is in a state of extending and locking.
第一径向凸出块302等大小，呈等间隙排列，第二径向凸出块202等大小，呈等间隙排列，第一径向凸出块302之间形成间隙槽3021，且，相邻第一径向凸出块302之间的间隙槽3021允许第二径向凸出块202穿过，相邻第二径向凸出块202之间的间隙允许第一径向凸出块302穿过。当牵引杆2需要从壳体伸出时，转动锁定环3，使第二径向凸出块202与第一径向凸出块302的间隙相对，向壳体外侧推出牵引杆2；当推出到位后，转动锁定环3，使第一径向凸出块302和第二径向凸出块202相对，牵引杆2的缩回运动被锁定限制。The first radially protruding blocks 302 are of equal size and arranged in equal intervals, the second radially protruding blocks 202 are of equal size and are arranged in equal intervals, gap grooves 3021 are formed between the first radially protruding blocks 302, and The gap groove 3021 between adjacent first radially protruding pieces 302 allows the second radially protruding pieces 202 to pass through, and the gap between adjacent second radially protruding pieces 202 allows the first radially protruding pieces 302 to pass through. through. When the drawbar 2 needs to stretch out from the housing, turn the locking ring 3 so that the gap between the second radially protruding block 202 and the first radially protruding block 302 is opposite, and push out the drawbar 2 to the outside of the housing; After being in place, turn the locking ring 3 so that the first radially protruding block 302 and the second radially protruding block 202 face each other, and the retraction movement of the draw bar 2 is locked and restricted.
本申请一些实施例中，锁块组件5设置在第一径向凸出块302处，即，通孔301开设在第一径向凸出块302上，相应的锁块组件5也安装在第一径向凸出块302处，相应的，锁槽201设置在第二径向凸出块202的延长线上。所述延长线是指以第二径向凸出块202所在位置为基准，沿牵引杆2外表面的方向，向远离壳体1一侧的方向延伸，位于远离壳体1一侧的外表面上。具体是指锁槽201和第二径向凸出块202位于牵引杆2的外表面上且锁槽 201和第二径向凸出块202位于牵引杆2的同一个轴向上。In some embodiments of the present application, the lock block assembly 5 is arranged at the first radially protruding block 302, that is, the through hole 301 is opened on the first radially protruding block 302, and the corresponding lock block assembly 5 is also installed at the first radially protruding block 302. At one radially protruding block 302 , correspondingly, the locking groove 201 is arranged on the extension line of the second radially protruding block 202 . The extension line refers to the position of the second radially protruding block 202 as a reference, along the direction of the outer surface of the drawbar 2, extending in a direction away from the side of the housing 1, and is located on the outer surface of the side away from the housing 1 superior. Specifically, it means that the locking groove 201 and the second radially protruding block 202 are located on the outer surface of the draw bar 2 and that the locking groove 201 and the second radially protruding block 202 are located on the same axial direction of the draw bar 2 .
锁块组件5和锁槽201配合第一径向凸出块302和第二径向凸出块202的这种位置设置，使伸出锁定和缩回锁定相配合。当需要缩回锁定时，先转动锁定环3使两组凸出块的间隙错开，当第二径向凸出块202缩回至第一径向凸出块302内部后，再转动锁定环3，使第一径向凸出块302上的锁块组件5转动至进入锁槽201。当需要伸出锁定时，转动锁定环3，使得锁块组件5的锁定块502从锁槽201的一侧滑出，解除对牵引杆2的锁定，随后伸缩组件4驱动牵引杆2从壳体1内伸出且第二径向凸出块202从两第一径向凸出块302之间的间隙槽3021通过，当牵引杆2伸出到位后，再次转动锁定环3，使得第一径向凸出块302和第二径向凸出块202在牵引杆2的轴向上相对，牵引杆2的缩回运动被锁定限制。The lock block assembly 5 and the lock groove 201 cooperate with the position setting of the first radially protruding block 302 and the second radially protruding block 202 , so that the extension lock and the retraction lock cooperate. When it is necessary to retract and lock, first turn the locking ring 3 to stagger the gap between the two groups of protruding blocks, and then turn the locking ring 3 after the second radial protruding block 202 retracts to the inside of the first radial protruding block 302 , so that the lock block assembly 5 on the first radially protruding block 302 is rotated to enter the lock groove 201 . When it is necessary to extend the lock, turn the locking ring 3 so that the locking block 502 of the locking block assembly 5 slides out from one side of the locking groove 201, unlocking the pulling rod 2, and then the telescopic assembly 4 drives the pulling rod 2 from the housing 1 and the second radially protruding block 202 passes through the gap groove 3021 between the two first radially protruding blocks 302. When the draw bar 2 is stretched out in place, turn the locking ring 3 again so that the first radially protruding block 202 The protruding block 302 and the second radially protruding block 202 are opposite to each other in the axial direction of the draw bar 2 , and the retraction movement of the draw bar 2 is restricted by locking.
本申请一些实施例中，锁定环3外壁上设置有手柄安装孔303，手柄安装孔303处安装有手柄6，壳体1的开口端101设置有沿壳体1周向方向延伸的手柄孔102，手柄6经手柄孔102穿出，手柄孔102的周向长度被配置为：可使第一径向凸出块302转动到与其相对的两个相邻的第二径向凸出块202的间隙处，也可转动到与第二径向凸出块202相对。此处所述的相对，是指在牵引杆2轴向延伸方向上，与第一径向凸出块302距离最近的两个第二径向凸出块202。通过转动锁定环3，变更第一径向凸出块302和第二径向凸出块202的配合状态，完成锁定和解锁。In some embodiments of the present application, the outer wall of the locking ring 3 is provided with a handle installation hole 303, the handle 6 is installed at the handle installation hole 303, and the open end 101 of the housing 1 is provided with a handle hole 102 extending along the circumferential direction of the housing 1 , the handle 6 passes through the handle hole 102, and the circumferential length of the handle hole 102 is configured to: the first radially protruding piece 302 can be rotated to the position of the two adjacent second radially protruding pieces 202 opposite to it. The gap can also be rotated to be opposite to the second radially protruding block 202 . The opposite mentioned here refers to the two second radially protruding blocks 202 closest to the first radially protruding block 302 in the axial extension direction of the draw bar 2 . By rotating the locking ring 3, the mating state of the first radially protruding block 302 and the second radially protruding block 202 is changed to complete locking and unlocking.
在一些实施例中，为方便定位锁定环3的位置，顺利地实现在锁定和解锁之间进行切换，手柄孔102在壳体1周向上的两端分别为解锁位和锁定位，且解锁位和锁定位分别满足以下条件：当手柄6位于手柄孔102的解锁位时，锁定环3所处的位置使得第一径向凸出块302在牵引杆2的轴向上正对两个 相邻的第二径向凸出块202的间隙，实现解锁；当手柄6转动至手柄孔102的锁定位时，锁定环3所处的位置使得第一径向凸出块302在牵引杆2的轴向上正对第二径向凸出块202，实现伸出锁定或缩回锁定。In some embodiments, in order to conveniently locate the position of the locking ring 3 and smoothly switch between locking and unlocking, the two ends of the handle hole 102 in the circumferential direction of the housing 1 are respectively the unlocking position and the locking position, and the unlocking position and the locking position meet the following conditions respectively: when the handle 6 is at the unlocking position of the handle hole 102, the position of the locking ring 3 is such that the first radially protruding block 302 faces two adjacent ones in the axial direction of the draw bar 2 The gap between the second radially protruding block 202 of the handle 202 realizes unlocking; when the handle 6 is rotated to the locking position of the handle hole 102, the position of the locking ring 3 is such that the first radially protruding block 302 is on the axis of the drawbar 2 Facing the second radially protruding block 202 upwards, the extension locking or retracting locking is realized.
本申请提供的伸缩锁定装置，作用原理如下。The telescopic locking device provided by the present application has the following working principle.
1、伸出锁定1. Extend the lock
如图8b和图9b所示，牵引杆2处于完全缩回状态，手柄6位于手柄孔102的锁定位，此时锁块组件5处于锁定位，其与锁槽201之间形成插销式锁定。As shown in FIG. 8b and FIG. 9b , the drawbar 2 is in a fully retracted state, and the handle 6 is in the locking position of the handle hole 102 . At this time, the lock block assembly 5 is in the locking position, forming a latch type lock with the lock groove 201 .
转动手柄6带动锁定环3发生转动，使锁块组件5滑出锁槽201，手柄6转动至手柄孔102的解锁位，此时牵引杆2处于解锁位(如图8a和图9a所示)。伸缩气缸401伸出，带动牵引杆2从壳体1内伸出，此过程中第二径向凸出块202顺利穿过锁定环3的第一径向凸出块302之间的间隙槽3021(参见图10)，当牵引杆2伸出到位后，如图11a所示。转动手柄6带动锁定环3转动，手柄6转动至手柄孔102的锁定位，使第二径向凸出块202与锁定环3的第一径向凸出块302之间的间隙槽3021错位，牵引杆2无法缩回，完成伸出锁定，此时车钩伸缩装置的状态如图11b所示。Turn the handle 6 to drive the lock ring 3 to rotate, so that the lock block assembly 5 slides out of the lock groove 201, the handle 6 rotates to the unlocked position of the handle hole 102, and the drawbar 2 is at the unlocked position (as shown in Figure 8a and Figure 9a) . The telescopic cylinder 401 stretches out, driving the draw bar 2 to protrude from the housing 1, during which the second radially protruding block 202 smoothly passes through the gap groove 3021 between the first radially protruding blocks 302 of the locking ring 3 (See Fig. 10), when the drawbar 2 stretches out into place, as shown in Fig. 11a. Turning the handle 6 drives the locking ring 3 to rotate, and the handle 6 rotates to the locking position of the handle hole 102, so that the gap groove 3021 between the second radially protruding block 202 and the first radially protruding block 302 of the locking ring 3 is dislocated, The drawbar 2 cannot be retracted, and the extension and locking are completed. At this time, the state of the coupler telescopic device is shown in Figure 11b.
2、缩回锁定2. Retract lock
如图11b所示，牵引杆2处于完全伸出状态，手柄6位于手柄孔102的锁定位，此时第二径向凸出块202与锁定环3的第一径向凸出块302之间的间隙槽3021错位，锁定环3与牵引杆2之间形成花键式锁定。As shown in Figure 11b, the drawbar 2 is in a fully extended state, and the handle 6 is located at the locking position of the handle hole 102. At this time, the second radially protruding piece 202 is between the first radially protruding piece 302 of the locking ring 3. The clearance groove 3021 of the dislocation, the spline lock is formed between the locking ring 3 and the drawbar 2 .
转动手柄6带动锁定环发生转动，当手柄6位于手柄孔102的解锁位时(如图11a所示)，锁定环3的第一径向凸出块302与第二径向凸出块202之间的间隙对中，此时牵引杆2处于解锁位。伸缩气缸401缩回，带动牵引 杆2缩回，过程中第二径向凸出块202顺利穿过锁定环3的第一径向凸出块302之间的间隙槽3021(参见图10)，当牵引杆2缩回到位后，如图9a所示。转动手柄6带动锁定环3转动，手柄6转动至手柄孔102的锁定位，使锁块组件5滑入锁槽201，此时牵引杆2无法伸出，完成缩回锁定，此时车钩伸缩装置的状态如图9b所示。Turning the handle 6 drives the locking ring to rotate. When the handle 6 is at the unlocking position of the handle hole 102 (as shown in FIG. The gap between them is centered, and the drawbar 2 is in the unlocked position at this time. The telescopic cylinder 401 is retracted, which drives the draw bar 2 to retract. During the process, the second radially protruding block 202 smoothly passes through the gap groove 3021 between the first radially protruding blocks 302 of the locking ring 3 (see FIG. 10 ), When the drawbar 2 is retracted to its original position, it is shown in Fig. 9a. Turn the handle 6 to drive the lock ring 3 to rotate, and the handle 6 is rotated to the locking position of the handle hole 102, so that the lock block assembly 5 slides into the lock groove 201. At this time, the drawbar 2 cannot be stretched out, and the retraction and locking are completed. At this time, the coupler telescopic device The state is shown in Figure 9b.
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the protection of the application. within range.

Claims (10)

  1. 一种伸缩车钩锁定装置，其特征在于，包括：A telescopic coupler locking device, characterized in that it comprises:
    壳体：包括开口端，与所述开口端相对的一端可被连接至伸缩车钩的一端；housing: including an open end, an end opposite said open end being connectable to an end of a telescoping coupler;
    牵引杆：可被连接至所述伸缩车钩的另一端，所述牵引杆的侧壁上设置有至少一个锁槽；Drawbar: can be connected to the other end of the telescopic coupler, and at least one lock slot is arranged on the side wall of the drawbar;
    伸缩组件：包括固定端和伸缩端，所述固定端连接设置在所述壳体内，所述伸缩端与所述牵引杆连接，可经所述壳体的所述开口端伸出；所述伸缩组件的伸缩运动可将所述牵引杆收回至所述壳体空间内，或推送至所述壳体外；Telescopic component: including a fixed end and a telescopic end, the fixed end is connected and arranged in the housing, the telescopic end is connected with the traction rod, and can protrude through the opening end of the housing; the telescopic The telescopic movement of the assembly can retract the towing rod into the space of the housing, or push it out of the housing;
    锁定环：套装在所述壳体的所述开口端内侧；Locking ring: sleeved inside the opening end of the housing;
    至少一组锁块组件：安装在所述锁定环上，可朝向所述壳体的径向方向伸缩；At least one set of locking block assemblies: mounted on the locking ring, capable of expanding and contracting toward the radial direction of the housing;
    所述锁槽的数量与所述锁块组件的数量对应，当所述牵引杆缩回至所述壳体内时，所述锁块组件可***所述锁槽，限制所述牵引杆的伸出运动。The number of the lock slots corresponds to the number of the lock block assemblies, and when the draw bar is retracted into the housing, the lock block assemblies can be inserted into the lock slots to limit the extension of the draw bar sports.
  2. 如权利要求1所述的伸缩车钩锁定装置，其特征在于，所述锁块组件包括：The telescopic coupler locking device according to claim 1, wherein the lock block assembly comprises:
    弹性件：安装在所述锁定环上，可朝向所述壳体的径向方向伸缩；Elastic part: installed on the locking ring, it can expand and contract toward the radial direction of the housing;
    锁定块：安装在所述弹性件的伸缩端；Locking block: installed at the telescopic end of the elastic member;
    所述弹性件的长度被配置为：与所述牵引杆的外壁接触时呈压缩状态；所述锁定块的尺寸被配置为：可***所述锁槽，被所述锁槽限制沿牵引杆轴向方向的运动。The length of the elastic member is configured to be in a compressed state when in contact with the outer wall of the drawbar; the size of the locking block is configured to be inserted into the lock slot and restricted by the lock slot along the axis of the drawbar. movement in the direction.
  3. 如权利要求2所述的伸缩车钩锁定装置，其特征在于，所述锁块组件 进一步包括安装在所述锁定环上的安装块，所述弹性件安装在所述安装块上。The telescoping coupler locking device according to claim 2, wherein the lock block assembly further comprises a mounting block mounted on the locking ring, and the elastic member is mounted on the mounting block.
  4. 如权利要求3所述的伸缩车钩锁定装置，其特征在于，所述安装块包括安装块主体部和相对所述安装块主体部凸出的安装块凸出部，所述弹性件安装在所述安装块凸出部上；所述锁定环上设置有通孔，所述通孔靠近所述壳体外周的一侧设置有第一台阶结构，所述安装块凸出部可经所述第一台阶结构之间的间隙穿过，所述安装块主体部安装在所述第一台阶结构上。The telescopic coupler locking device according to claim 3, wherein the installation block includes a main body of the installation block and a protrusion of the installation block protruding relative to the main body of the installation block, and the elastic member is installed on the On the protruding part of the mounting block; the locking ring is provided with a through hole, and the side of the through hole close to the outer circumference of the housing is provided with a first stepped structure, and the protruding part of the mounting block can pass through the first The gap between the stepped structures passes through, and the main part of the installation block is installed on the first stepped structure.
  5. 如权利要求4所述的伸缩车钩锁定装置，其特征在于，所述通孔靠近所述壳体内周的一侧设置有第二台阶结构，所述锁定块外周包括锁定块凸出部，所述锁定块凸出部卡在所述第二台阶结构处，以限制所述锁定块经所述通孔脱出。The telescopic coupler locking device according to claim 4, wherein a second stepped structure is provided on a side of the through hole close to the inner circumference of the housing, and the outer circumference of the locking block includes a locking block protrusion, the The protruding part of the locking block is locked at the second step structure to restrict the locking block from coming out through the through hole.
  6. 如权利要求2所述的伸缩车钩锁定装置，其特征在于，所述锁定块的头部设置有磨耗垫。The telescopic coupler locking device according to claim 2, characterized in that, the head of the locking block is provided with a wear pad.
  7. 如权利要求1所述的伸缩车钩锁定装置，其特征在于，沿所述牵引杆的周向方向，所述锁槽呈由两侧向中部下凹的圆弧状。The telescopic coupler locking device according to claim 1, characterized in that, along the circumferential direction of the drawbar, the locking groove is in the shape of an arc concave from both sides to the middle.
  8. 如权利要求1至7任一项所述的伸缩车钩锁定装置，其特征在于，沿所述锁定环内周壁间隔设置有若干第一径向凸出块，沿所述牵引杆外壁间隔设置有若干第二径向凸出块，所述第二径向凸出块相对于所述锁槽位于靠近所述壳体的一侧；任意两个所述第一径向凸出块之间的间隙可允许所述第二径向凸出块通过，所述第一径向凸出块与所述第二径向凸出块相对时，所述牵引杆缩回至所述壳体的运动被限制。The telescopic coupler locking device according to any one of claims 1 to 7, wherein a plurality of first radially protruding blocks are arranged at intervals along the inner peripheral wall of the locking ring, and a plurality of first radially protruding blocks are arranged at intervals along the outer wall of the draw bar. A second radially protruding block, the second radially protruding block is located on a side close to the housing relative to the locking groove; the gap between any two of the first radially protruding blocks can be The second radially protruding block is allowed to pass through, and when the first radially protruding block is opposite to the second radially protruding block, the retraction movement of the draw rod to the housing is restricted.
  9. 如权利要求8所述的伸缩车钩锁定装置，其特征在于，所述锁块组件设置在所述第一径向凸出块处，所述锁槽设置在所述第二径向凸出块的延长线上。The telescoping coupler locking device according to claim 8, wherein the locking block assembly is arranged at the first radially protruding block, and the locking groove is arranged at the second radially protruding block extension cord.
  10. 如权利要求9所述的伸缩车钩锁定装置，其特征在于，所述锁定环外壁上设置有手柄，所述壳体的所述开口端设置有沿所述壳体的周向方向延伸的手柄孔，所述手柄经所述手柄孔穿出，所述手柄孔的周向长度被配置为：可使所述第一径向凸出块转动到与其相对的两个相邻的所述第二径向凸出块的间隙处，也可转动到使所述第一径向凸出块与所述第二径向凸出块相对。The telescopic coupler locking device according to claim 9, wherein a handle is provided on the outer wall of the locking ring, and a handle hole extending along the circumferential direction of the housing is provided at the opening end of the housing , the handle passes through the handle hole, and the circumferential length of the handle hole is configured such that the first radially protruding block can be rotated to the two adjacent second radially opposite blocks. To the gap of the protruding block, it can also be rotated to make the first radial protruding block opposite to the second radial protruding block.
PCT/CN2022/125547 2022-05-31 2022-10-17 Telescopic coupler locking device WO2023061503A1 (en)

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Publication number Priority date Publication date Assignee Title
CN114802336B (en) * 2022-05-31 2024-01-30 中车制动***有限公司 Locking device of telescopic coupler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131721B (en) * 1960-12-02 1962-06-20 Knorr Bremse Kg Spring loaded bumpers for rail vehicles
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
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
WO2019101218A1 (en) * 2018-06-27 2019-05-31 中车青岛四方车辆研究所有限公司 Coupler telescopic apparatus and coupler
CN114802336A (en) * 2022-05-31 2022-07-29 中车制动***有限公司 Telescopic coupler locking device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040207214A1 (en) * 2003-04-16 2004-10-21 Yi-An Lin Electronic door lock
EP1987967B1 (en) * 2007-04-30 2010-02-17 ARIES S.r.l. Sliding tow hook for farming machines
CN103618171B (en) * 2013-11-29 2015-09-02 浩亭(珠海)制造有限公司 Public connector, female connectors and connector assembly
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
CN109185216B (en) * 2018-08-16 2020-11-24 东台友铭船舶配件有限公司 Locking clamping type marine bearing
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131721B (en) * 1960-12-02 1962-06-20 Knorr Bremse Kg Spring loaded bumpers for rail vehicles
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
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
WO2019101218A1 (en) * 2018-06-27 2019-05-31 中车青岛四方车辆研究所有限公司 Coupler telescopic apparatus and coupler
CN114802336A (en) * 2022-05-31 2022-07-29 中车制动***有限公司 Telescopic coupler locking device

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