CN113212069A

CN113212069A - Axle fixing device

Info

Publication number: CN113212069A
Application number: CN202110652577.0A
Authority: CN
Inventors: 陆强; 张超德; 周炯; 李冬; 彭燎; 祝笈; 彭瑞; 常明; 冯陆; 赵寿鑫; 王毅; 陶斌; 谷美娜
Original assignee: CRRC Meishan Co Ltd
Current assignee: CRRC Meishan Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-08-06
Anticipated expiration: 2041-06-11
Also published as: CN113212069B

Abstract

The invention discloses an axle fixing device which comprises an axle and a hook mounting seat, wherein a hanging pin is arranged on the axle, a hook is hinged on the hook mounting seat and matched with the hanging pin, a hook locking hole is arranged on the hook and matched with a secondary locking device. The invention has the beneficial effects that: the secondary locking round pin penetrates through the hanging plate locking hole to form a closed fixing form, so that the problem that the contact surface of the existing hook and the hanging pin is in arc contact, the closed form is not formed, and the hook has the risk of being separated from the hanging pin under the impact working condition applied to a railway is solved; the problem of current structure after loading the container, couple and hang the unable observation of the degree of connection of round pin, can not guarantee not have the virtual connection, can't ensure operation safety is solved.

Description

Axle fixing device

Technical Field

The invention belongs to vehicle mechanical equipment, and particularly relates to an axle fixing device.

Background

Semitrailers usually adopt air suspensions, which generally have an integral lifting function and are applied to single-axle or multi-axle structures. For a highway and railway semitrailer, in order to adapt to two modes of highway self-running and railway back-load running, an air suspension of the semitrailer adopts a separable structure to adapt to different transportation modes, when the semitrailer operates on the back load of a railway, axle wheels are required to be fixed in the back-load running after being lifted, the axle fixation is released after the railway back-load running is finished, and the axle and the wheels are lowered to restore the highway running mode.

Patent publication No. CN109572347A discloses a public railway dual-purpose semitrailer axletree fixing device, and the couple of the device is rotated by cylinder drive and is realized that the axletree promotes the back and be connected with the peg and realize that the axletree is vertical fixed, but the action of the couple of this kind of mode is around the rotary motion of pin junction, and the couple is the circular arc contact with the contact surface of peg, does not form closed form, and under the impact condition of railway application, the couple has the risk that breaks away from the peg.

In addition, the hook and the hanging pin of the existing structure are arranged on the frame, and after the container is loaded, the connection degree of the hook and the hanging pin cannot be observed, so that no virtual connection can be ensured, and the operation safety cannot be guaranteed. Therefore, there is a need for a novel axle fixing device with two-stage locking and side display functions, which is compact in structure and convenient to operate.

Disclosure of Invention

The invention aims to: the invention provides an axle fixing device, which solves the problems that under the impact working condition applied to a railway, a hook is in risk of being separated from a hanging pin, and the connection degree of the hook and the hanging pin cannot be observed.

The purpose of the invention is realized by the following technical scheme:

the utility model provides an axletree fixing device, includes axletree and couple mount pad, is equipped with on the axletree and hangs the round pin, and it has the couple to articulate on the couple mount pad, and couple and hanging round pin cooperation are equipped with couple lock obturator on the couple, couple lock obturator and second grade locking device cooperation, and second grade locking device dies the couple lock through couple lock obturator, realizes that the second grade locking of couple is fixed.

Furthermore, the axle rotates to ascend and descend and is arranged in a round hole of the fixed support, the fixed support and the hook mounting seat are arranged on the frame, the height of the axle can be adjusted as required, and the dual-purpose use of highway and railway is achieved.

Furthermore, the axletree include the axletree link plate, be equipped with on the axletree link plate and hang the round pin, realize hanging of axletree and establish fixedly.

Furthermore, the axletree link plate be equipped with relative two, be equipped with on the axletree link plate and hang the pinhole, hang the round pin and establish in relative two and hang the pinhole, be equipped with on the axletree link plate and hang board lockhole, the axletree link plate is equipped with and connects the face with the axletree laminating connection.

Furthermore, the hook is provided with a mounting seat connecting hole, the mounting seat connecting hole is hinged with the hook mounting seat through a rotating pin, the hook is provided with a hook locking hole matched with the hanging plate locking hole, and the hook is provided with a hook-shaped cambered surface matched with the hanging pin.

Furthermore, the hook realizes swinging rotation through the swinging cylinder, and the position of the hook is rotationally adjusted through stretching and retracting of the swinging cylinder.

Furthermore, the second-stage locking device comprises a locking round pin, the locking round pin is matched with the hook locking hole, the locking round pin is connected with the pull rod, the pull rod penetrates through a locking guide cylinder, the locking guide cylinder is arranged on the axle, the locking round pin is inserted into or withdrawn from the hook locking hole through the pull rod, and the second-stage fixing and releasing of the hook are achieved.

Furthermore, the locking guide cylinder is provided with an installation cylinder, a reset spring is arranged in the installation cylinder, the reset spring is arranged between the pull rod and the locking guide cylinder, and the pull rod is ensured to have the tendency of withdrawing from the hook locking hole through the reset spring.

Furthermore, the pull rod is provided with a pull rod stop block, the pull rod stop block is matched with the limiting mechanism, and the pull rod stop block is clamped by the limiting mechanism to realize the fixed limiting of the pull rod.

Furthermore, stop gear include limit stop, flexible limit stop and pull rod dog cooperation, through limit stop's concertina movement, realize establishing or relaxing the card of pull rod dog.

Furthermore, limit stop wear to establish in spacing guide cylinder, be equipped with safety spring between limit stop and the spring mount pad, the spring mount pad is established on spacing guide cylinder, safety spring guarantees the laminating of limit stop counter pull rod dog under spacing cylinder airless state.

Furthermore, limit stop realize flexible through spacing cylinder, realize limit stop's flexible through spacing strong cylinder.

The invention has the beneficial effects that:

1. the secondary locking round pin penetrates through the hanging plate locking hole to form a closed fixing form, the problem that the existing hook is in arc contact with the contact surface of the hanging pin, the closed form is not formed, and the hook has the risk of being separated from the hanging pin under the impact working condition applied to a railway is solved.

2. Through the fit clearance of rational design couple cambered surface and peg graft, the fit clearance of second grade locking round pin and link plate round hole makes axletree main stress point be located the arc surface, only just through second grade locking round pin and link plate round hole atress under the unexpected circumstances, has increased axletree fixed state's redundancy.

3. The problem of current structure after loading the container, couple and hang the unable observation of the degree of connection of round pin, can not guarantee not have the virtual connection, can't ensure operation safety is solved.

The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.

Drawings

Fig. 1 is a schematic structural view of the present invention in a fixed state.

Fig. 2 is a schematic sectional view a-a of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a schematic structural view in an unfixed state of the present invention.

Fig. 5 is a schematic sectional view B-B of fig. 4.

Fig. 6 is a top view of fig. 4.

In the figure: 1-a frame, 2-an axle, 3-a fixed support, 4-a hook mounting seat, 5-a hook, 6-a swing cylinder, 7-a secondary locking device and 8-a limiting mechanism; 21-axle hanging plate, 211-hanging pin hole, 212-hanging plate locking hole, 213-axle connecting surface and 22-hanging pin; 51-mounting seat connecting hole, 52-hook locking hole and 53-cambered surface; 71-locking round pin, 72-locking guide cylinder, 73-mounting cylinder, 74-pull rod, 75-pull rod stop block and 76-reset spring; 81-limit stop, 82-limit guide cylinder, 83-spring mounting seat, 84-safety spring and 85-limit cylinder.

Detailed Description

The following non-limiting examples serve to illustrate the invention.

Example 1:

referring to fig. 1 to 6, an axle fixing device includes a frame 1, an axle 2, a fixing support 3, a hook mounting seat 4, a hook 5, a swing cylinder 6, a secondary locking device 7, and a limiting mechanism 8.

The axle 2 is rotatably arranged in a round hole of the fixed support 3 in a lifting way, and the fixed support 3 and the hook mounting seat 4 are fixed on the frame 1. A hanging pin 22 is arranged on the axle 2, a hook 5 is hinged to the hook mounting seat 4, and the cambered surface of the hook is matched with the hanging pin arranged on the hook hanging plate to realize primary fixation. The hook 5 is provided with a hook locking hole 52, and the hook locking hole 52 is matched with the secondary locking device 7, so that secondary locking of the axle can be realized.

Axletree 2 is equipped with relative two including welding axletree link plate 21 on the axis body, axletree link plate 21, is equipped with on the axletree link plate 211, hangs the fixed welding of round pin 22 in relative two hang pin holes 211, is equipped with on the axletree link plate 21 and hangs board lock hole 212, and axletree link plate 21 is equipped with and connects face 213 with the axletree 2 laminating of being connected.

The hook 5 is provided with a mounting seat connecting hole 51, the mounting seat connecting hole 51 is hinged with the hook mounting seat 4 through a rotating pin, the hook 5 is provided with a hook locking hole 52 matched with the hanging plate locking hole 212, and the hook 5 is provided with a hook-shaped cambered surface 53 matched with the hanging pin 22.

The hook 5 realizes swinging rotation through a swinging cylinder 6. The swing cylinder retracts inwards or outwards to drive the hook to rotate anticlockwise or clockwise around the connecting hole of the hook mounting seat.

The secondary locking device 7 comprises a locking round pin 71, the locking round pin 71 is matched with the hook locking hole 52, the locking round pin 71 is connected with a pull rod 74, the pull rod 74 is arranged in a locking guide cylinder 72 in a penetrating mode, and the locking guide cylinder 72 is arranged on the axle 2. The locking guide cylinder 72 is provided with a mounting cylinder 73, a return spring 76 is provided in the mounting cylinder 73, and the return spring 76 is provided between the pull rod 74 and the locking guide cylinder 72.

When the axle is in a fixed state, the reset spring is compressed, the locking round pin penetrates through the hanging plate locking hole, the pull rod stop block is in contact with the limit stop block, and the secondary locking is ensured to be in a working state. When the axle is in an unfixed state, the reset spring is released, the locking round pin is withdrawn from the hanging plate locking hole, and the pull rod stop dog is separated from the limit stop dog and is far away from the limit stop dog.

The pull rod 74 is provided with a pull rod stop block 75, and the pull rod stop block 75 is matched with the limiting mechanism 8, so that the locking round pin can be kept in a locking state. The limit mechanism 8 comprises a limit stop 81, and the telescopic limit stop 81 is matched with the pull rod stop 75. The limit stop 81 is arranged in the limit guide cylinder 82 in a penetrating mode, a safety spring 84 is arranged between the limit stop 81 and the spring mounting seat 83, the spring mounting seat 83 is arranged on the limit guide cylinder 82, and the limit stop 81 stretches through the limit cylinder 85.

The automatic telescopic motion of limit stop is realized to spacing cylinder, and safety spring also enables pull rod dog and limit stop contact when guaranteeing that the cylinder is airless. The limit stop block and the square stop block are pasted on the vehicle side display of the firm locking of the hook and the hanging pin, the locking round pin and the locking hole of the hanging plate.

The sequence of the axle fixing process is as follows: the hook rotates to the position contacted with the hanging pin, the pull rod is pushed inwards, and the pull rod limiting cylinder is pushed outwards. The sequence of the fixing releasing process of the axle is as follows: the pull rod limiting cylinder retracts into the cylinder body, the pull rod is pulled outwards, the hook rotates to a position far away from a contact surface of the hanging pin, then the axle rotates and descends around the round hole of the axle fixing support under the action of the air bag, and the conversion of the working conditions of highway and railway is completed.

The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will.

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

1. The utility model provides an axletree fixing device, includes axletree (2) and couple mount pad (4), is equipped with on axletree (2) and hangs round pin (22), and it has couple (5) to articulate on couple mount pad (4), and couple (5) and hang round pin (22) cooperation, its characterized in that: and a hook locking hole (52) is arranged on the hook (5), and the hook locking hole (52) is matched with the secondary locking device (7).

2. The axle fixing device according to claim 1, wherein: the axle (2) is rotatably lifted and arranged in a round hole of the fixed support (3), and the fixed support (3) and the hook mounting seat (4) are arranged on the frame (1).

3. The axle fixing device according to claim 1, wherein: the axle (2) comprises an axle hanging plate (21), and a hanging pin (22) is arranged on the axle hanging plate (21).

4. The axle fixing device according to claim 2, wherein: the car axle hanging plate (21) is provided with two opposite hanging pin holes (211), the hanging pins (22) are arranged in the two opposite hanging pin holes (211), the hanging plate locking holes (212) are formed in the car axle hanging plate (21), and the car axle hanging plate (21) is provided with a car axle connecting surface (213) which is connected with the car axle (2) in a laminating manner.

5. The axle fixing device according to claim 1, 3 or 4, wherein: the hook is characterized in that a mounting seat connecting hole (51) is formed in the hook (5), the mounting seat connecting hole (51) is hinged to the hook mounting seat (4) through a rotating pin, a hook locking hole (52) matched with the hanging plate locking hole (212) is formed in the hook (5), and a hook-shaped cambered surface (53) matched with the hanging pin (22) is formed in the hook (5).

6. The axle fixing device according to claim 1, wherein: the two-stage locking device (7) comprises a locking round pin (71), the locking round pin (71) is matched with the hook locking hole (52), the locking round pin (71) is connected with a pull rod (74), the pull rod (74) is arranged in a locking guide cylinder (72) in a penetrating mode, and the locking guide cylinder (72) is arranged on the axle (2).

7. The axle fixing device according to claim 6, wherein: the locking guide cylinder (72) is provided with a mounting cylinder (73), a return spring (76) is arranged in the mounting cylinder (73), and the return spring (76) is arranged between the pull rod (74) and the locking guide cylinder (72).

8. The axle fixing device according to claim 6 or 7, wherein: and a pull rod stop block (75) is arranged on the pull rod (74), and the pull rod stop block (75) is matched with the limiting mechanism (8).

9. The axle fixing device according to claim 8, wherein: the limiting mechanism (8) comprises a limiting stop block (81), and the telescopic limiting stop block (81) is matched with the pull rod stop block (75).

10. The axle fixing device according to claim 9, wherein: the limiting stopper (81) is arranged in the limiting guide cylinder (82) in a penetrating mode, a safety spring (84) is arranged between the limiting stopper (81) and the spring mounting seat (83), and the spring mounting seat (83) is arranged on the limiting guide cylinder (82).