CN113880014A

CN113880014A - Lock cylinder, lock body shaft sleeve, locking structure, lock, hopper door, working hopper, aerial ladder device and vehicle

Info

Publication number: CN113880014A
Application number: CN202111006733.2A
Authority: CN
Inventors: 彭顺文; 曹坤; 熊潇; 陈波
Original assignee: Hunan Zoomlion Emergency Equipment Co Ltd
Current assignee: Hunan Zoomlion Emergency Equipment Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-01-04

Abstract

The invention relates to the field of engineering machinery, and discloses a lock cylinder, a lock body shaft sleeve, a locking structure, a lock, a hopper door, a working hopper, an aerial ladder device and a vehicle, wherein an axial channel (2) is formed inside the lock cylinder (1), the axial channel (2) comprises a small-diameter channel section (201) and a large-diameter channel section (202) which are axially arranged, a lock cylinder shaft sleeve (3) is arranged in the large-diameter channel section (202), and a lock tongue moving channel (4) is formed by an inner wall channel of the lock cylinder shaft sleeve (3) and the small-diameter channel section (201) together. The invention solves the technical problems that when the locking structure provided with the lock tongue is applied to the bucket door of a working bucket, the locking structure of the bucket door is locked due to deformation under the condition that the working bucket structure is slightly deformed or the bucket door has larger manufacturing error, so that a push rod of the bucket door cannot be pushed by a wedge block when the working bucket is recovered, and the bucket door cannot be opened, so that the working bucket cannot be recovered in place.

Description

Lock cylinder, lock body shaft sleeve, locking structure, lock, hopper door, working hopper, aerial ladder device and vehicle

Technical Field

The invention relates to the field of engineering machinery, in particular to a lock column, a lock body shaft sleeve, a locking structure, a lock, a hopper door, a working hopper, an aerial ladder device and a vehicle.

Background

The high-altitude operation vehicle is a special device for lifting workers and related equipment to a high-altitude designated position to perform operations such as fire extinguishing, rescue, installation, maintenance and the like. The working bucket is arranged at the top end of the ladder frame of the overhead working truck and is an important device for realizing the main function of the overhead working truck. In order to better realize that the bucket door can be opened between the transfer working bucket of the instrument and the ladder frame, and the ladder frame is placed in the channel of the bucket door, the folding of the working bucket and the ladder frame is realized to reduce the whole volume of the overhead working truck.

At present, under the condition that the structure of the working bucket is slightly deformed or the manufacturing error of the bucket door is large, the locking structure of the bucket door is locked due to deformation, so that a push rod of the bucket door cannot be pushed by a wedge block when the working bucket is recovered, the situation that the bucket door cannot be opened occurs, and the working bucket cannot be recovered in place.

Disclosure of Invention

The invention aims to provide a lock column, a lock body shaft sleeve, a locking structure, a lock, a bucket door, a working bucket, an aerial ladder device and a vehicle.

In order to achieve the above object, the present invention provides a lock cylinder;

the lock cylinder can be used for being arranged in a locking structure in a built-in mode to limit a lock bolt, an axial channel is formed inside the lock cylinder and comprises a small-diameter channel section and a large-diameter channel section which are axially arranged, a lock cylinder shaft sleeve is arranged in the large-diameter channel section, and an inner wall channel of the lock cylinder shaft sleeve and the small-diameter channel section form a lock bolt moving channel together.

Preferably, the lock cylinder shaft sleeve is made of nylon or self-lubricating materials.

The invention provides a lock body shaft sleeve;

this lock body axle sleeve can be arranged in the closure structure in being arranged in order to carry out the spring bolt spacing, the lock body axle sleeve sets up lock body axle sleeve outer wall and axle sleeve end wall in the lock post recess that corresponds the lock post setting including being used for the laminating, and lock body axle sleeve outer wall and axle sleeve end wall enclose to become to be used for holding the spring bolt and carry out spacing spring bolt and hold spacing counter bore to the terminal surface of spring bolt.

Preferably, the entry of the bolt receiving limit counterbore includes a beveled flare extending radially outwardly to have a beveled leading surface.

Preferably, the outer side surface of the outer wall of the lock body shaft sleeve is provided with a trapezoidal boss.

The invention provides a locking structure;

the locking structure comprises a lock column, a lock tongue, a spring, a lock body shaft sleeve and a lock column groove, wherein the lock column is any one of the lock columns, the lock tongue moves along a lock tongue moving channel under the action of the spring arranged in the small-diameter channel section, and the lock tongue and the lock body shaft sleeve in the lock column groove are used for forming switching between a connection locking state and a disconnection unlocking state;

the spring is sleeved on the lock tongue, and a boss for overlapping the spring is arranged on the inner side surface of the small-diameter channel section.

Preferably, the lock body sleeve is any one of the lock body sleeves described above.

The present invention provides a lock;

the lock comprises a first shell, a second shell and any one of the locking structures, a lock cylinder, a lock tongue, a spring and a lock cylinder shaft sleeve are arranged on the first shell, a lock cylinder groove and a lock body shaft sleeve are arranged on the second shell, and the first shell and the second shell are correspondingly arranged on an external component which needs to be locked and connected.

Preferably, the outer side of the second shell is provided with a guide plate.

Preferably, when the outer side surface of the lock body shaft sleeve is provided with a trapezoidal boss, the second shell comprises a limiting flange which is arranged along the inner side surface of the lock cylinder groove and limits the trapezoidal boss in the lock cylinder groove.

Preferably, the second housing includes a limit adjusting plate for limiting the movement of the first housing.

Preferably, a limiting groove or a limiting protrusion for fixing the position of the second shell is arranged on the outer side surface of the lock cylinder or on the first shell corresponding to the limiting adjusting plate.

Preferably, the bolt is kept away from the one end of lock cylinder axle sleeve is provided with a plurality of adjusting nuts, be provided with buffer spacer between the adjusting nut.

The invention provides a hopper door;

the hopper door comprises a hopper door body, a hopper door push rod and any one of the locks, the lock is arranged between the hopper door body and the hopper door push rod, the lock can be switched between a locking state and an unlocking state, the hopper door body is connected with the hopper door push rod when the lock is in the locking state, and a channel is formed between the hopper door body and the hopper door push rod when the lock is in the unlocking state.

The invention provides a working bucket;

the working bucket is arranged on the ladder frame and comprises the bucket door, and the bucket door is used for switching the locking state and the unlocking state of the lock of the bucket door under the action of the pushing structure on the ladder frame.

The invention provides an aerial ladder device;

the aerial ladder device comprises the working bucket and a ladder frame, wherein the ladder frame is used for opening a bucket door of the working bucket through a pushing structure, and the working bucket and the ladder frame are folded through a channel of the bucket door.

The invention provides a vehicle

The vehicle comprises a vehicle body and the aerial ladder device, wherein the aerial ladder device is arranged on the vehicle body.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of an embodiment of a lock cylinder sleeve of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic structural view of the lock body sleeve of the present invention;

FIG. 4 is a schematic structural diagram of a gate, a working bucket and an aerial ladder device of the present invention in practical application;

fig. 5 is a structural schematic diagram of the aerial ladder device in a folded state of the working bucket and the aerial ladder.

Description of the reference numerals

1. A lock cylinder; 2. an axial channel; 201. a small diameter passage section; 202. a large diameter channel section; 3. a lock cylinder shaft sleeve; 4. a bolt moving channel; 5. a lock body shaft sleeve; 501. the outer wall of the lock body shaft sleeve; 502. a shaft sleeve end wall; 503. the lock tongue contains a limiting counter bore; 504. obliquely flaring; 505. a trapezoidal boss; 6. a lock cylinder groove; 7. a latch bolt; 8. a spring; 9. a first housing; 10. a second housing; 1001. a guide plate; 1002. a limiting flange; 1003. a limiting adjusting plate; 11. adjusting the nut; 12. a cushion pad; 13. a hopper door; 14. a working bucket; 15. a ladder frame.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the terms "first", "second", and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present invention, the terms "upper", "inner", "outer", "center", "axial" and "radial" etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 2, the present invention provides a lock cylinder capable of being used in a built-in locking structure for locking and limiting, an axial passage 2 is formed inside the lock cylinder 1, the axial passage 2 includes a small-diameter passage section 201 and a large-diameter passage section 202 which are axially arranged, a lock cylinder shaft sleeve 3 is disposed in the large-diameter passage section 202, and an inner wall of the lock cylinder shaft sleeve 3 forms a bolt moving passage 4 together with the small-diameter passage section 201.

According to the invention, the lock column shaft sleeve is arranged in the large-diameter channel section of the lock tongue moving channel of the lock tongue to carry out guided limiting on the movement of the lock tongue, so that the possibility that the radial position of the lock tongue in the lock tongue moving channel can deviate and deform is reduced, and the technical problem that when the locking structure provided with the lock tongue is applied to a bucket door of a working bucket, the pushing rod of the bucket door cannot be pushed by the wedge block and the bucket door cannot be opened during the recovery of the working bucket due to the fact that the locking structure of the bucket door is locked due to deformation under the condition that the working bucket structure is slightly deformed or the manufacturing error of the bucket door is large when the locking structure provided with the lock tongue is deformed is avoided.

In an alternative embodiment of the present invention, the lock cylinder shaft sleeve 3 is made of a shaft sleeve made of nylon or a lubricating material, preferably, the nylon or the lubricating material is a wear-resistant material, so as to reduce the loss of the lock cylinder shaft sleeve 3 in the using process, improve the use effect of the whole lock cylinder, and prolong the service life. Meanwhile, the lock cylinder shaft sleeve 3 is made of wear-resistant materials, so that the movement of the lock tongue in the lock tongue moving channel can be improved to be smoother, and the switching of connection locking and disconnection unlocking states of the locking structure comprising the lock cylinder is facilitated.

The invention provides a lock body shaft sleeve which can be arranged in a locking structure to limit a lock tongue;

as shown in fig. 1 to 3, the lock body shaft sleeve 5 includes a lock body shaft sleeve outer wall 501 and a shaft sleeve end wall 502 for being fitted and disposed in a lock cylinder groove 6 corresponding to the lock cylinder 1, and the lock body shaft sleeve outer wall 501 and the shaft sleeve end wall 502 enclose a lock bolt accommodating limiting counterbore 503 for accommodating the lock bolt 7 and limiting the end surface of the lock bolt 7. Optionally, the lock body shaft sleeve 5 is made of wear-resistant materials, and further the optional lock body shaft sleeve 5 is made of nylon or lubricating materials. The setting of lock body axle sleeve outer wall 501 laminating lock post recess 6 of lock body axle sleeve 5 can be selected through the size of a dimension to lock body axle sleeve 5 according to the use needs of reality to the realization carries out more excellent spacing effect to spring bolt 7 of lock post 1. Meanwhile, the shaft sleeve end wall 502 can limit the movement of the lock tongue 7 along the lock tongue moving channel 4, and the situation that the lock tongue 7 is blocked due to excessive displacement is avoided.

The lock cylinder groove 6 may be a notch for fixing the lock tongue corresponding to the case structure of the lock cylinder fixedly disposed on the external member, or other structure containing the notch for fixing the lock tongue corresponding to the lock cylinder disposed in the integrated structure of the external member, such as a fixed mounting groove disposed on a door or a door frame, or a case structure for a buckle having an open groove disposed separately.

In an alternative embodiment of the invention, the entrance to the bolt receiving limit counterbore 503 includes a beveled flare 504 that extends radially outward to have a beveled leading surface. The inclined flaring 504 can guide the bolt 7 which enters and slides out of the bolt accommodating limiting counterbore 503, and reduce the friction resistance between the bolt 7 and the lock body shaft sleeve 5 when entering or sliding out of the bolt accommodating limiting counterbore 503, thereby improving the smoothness of the connection locking and disconnection unlocking state switching of the locking structure with the lock body shaft sleeve 5, improving the use efficiency and prolonging the service life of the locking structure.

In an alternative embodiment of the present invention, the outer side surface of the lock body shaft sleeve outer wall 501 is provided with a trapezoid boss 505, the trapezoid boss 505 is at least used for increasing the contact friction between the lock body shaft sleeve outer wall 501 and the lock cylinder groove 6, and under the supporting action of the shaft sleeve end wall 502 and the supporting action of the lock body shaft sleeve outer wall 501 itself, the lock body shaft sleeve 5 is assisted to be fixed in the lock cylinder groove 6, so that the lock body shaft sleeve 5 can be effectively prevented from falling off in the using process. In other alternative embodiments of the present invention, the outer side of the outer wall 501 of the lock body sleeve is provided with a groove or protrusion for matching with the protrusion or groove provided on the inner side of the lock cylinder groove 6 for relative position fixing.

The invention provides a locking structure;

the locking structure comprises a lock cylinder 1, a lock tongue 7, a spring 8, a lock body shaft sleeve 5 and a lock cylinder groove 6, wherein in a further alternative embodiment, the lock cylinder is the lock cylinder 1 described in any one of the above, the lock tongue 7 moves along the lock tongue moving channel 4 under the action of the spring 8 arranged in the small-diameter channel section 201, and is used for forming connection locking and disconnection unlocking state switching with the lock body shaft sleeve 5 in the lock cylinder groove 6. Wherein, spring 8 cover is established on spring bolt 7, is equipped with the boss that is used for overlap joint spring 8 on the interior secondary face of path section 201.

According to the lock column of the locking structure, the lock column shaft sleeve is arranged in the large-diameter channel section of the lock tongue moving channel of the lock tongue to carry out guided limiting on the movement of the lock tongue, so that the possibility that the radial position of the lock tongue in the lock tongue moving channel can deviate and deform is reduced, the locking structure is prevented from being stuck due to structural deformation, when the locking structure is applied to a bucket door of a working bucket, under the condition that the working bucket structure is slightly deformed or the manufacturing error of the bucket door is large, the locking structure of the bucket door is blocked due to deformation, a push rod of the bucket door cannot be pushed by a wedge block during the recovery of the working bucket, and the situation that the bucket door cannot be opened occurs, so that the working bucket cannot be recovered in place is avoided.

In a further optional embodiment of the present invention, the lock body shaft sleeve is any one of the lock body shaft sleeves 5 described above, and the lock body shaft sleeve 5 and the lock cylinder 1 are matched to guide and limit the movement of the lock tongue 7 more effectively, so that the smoothness of the lock body structure in switching between the connection locking state and the disconnection unlocking state is improved, the use efficiency is further improved, and the service life of the lock body structure is prolonged.

The present invention provides a lock;

as shown in fig. 1 to 3, the lock comprises a first housing 9, a second housing 10 and a locking structure as described in any one of the above, wherein the lock cylinder 1, the bolt 7, the spring 8 and the lock cylinder sleeve 3 are arranged through the first housing 9, the lock cylinder groove 6 and the lock cylinder sleeve 5 are arranged through the second housing 10, and the first housing 9 and the second housing 10 are correspondingly arranged on an external component for requiring locking connection.

In an alternative embodiment of the present invention, a guide plate 1001 is disposed on an outer side surface of the second housing 10, and the guide plate 1001 may be a plate surface that is disposed obliquely from an opening end away from the lock cylinder groove 6 to the opening end of the lock cylinder groove 6, and further preferably, in order to improve the stability of the overall structure of the guide plate 1001, the guide plate 1001 includes a guide surface for guiding the lock tongue 7 and a support surface for supporting the guide surface, and the guide surface and the support surface and the structural surface of the second housing 10 enclose to form a closed triangular structure, thereby improving the stability of the structural arrangement of the guide plate 1001.

In an alternative embodiment of the present invention, but with the stepped boss 505 on the outer side of the lock sleeve 5, the second housing 10 includes a retaining flange 1002 disposed along the inner side of the lock cylinder recess 6 and retaining the stepped boss 505 in the lock cylinder recess 6. In a further alternative embodiment of the present invention, the trapezoidal projection 505 of the lock body shaft sleeve 5 is disposed at one end adjacent to the shaft sleeve end wall 502, and the limiting flange 1002 is pressed against the inside of the lock cylinder groove 6 along the axial direction, so that the effect of axially fixing the lock body shaft sleeve 5 in the lock cylinder groove 6 by axially fixing the limiting flange 1002 can be achieved.

In a further alternative embodiment of the present invention, the limiting flange 1002 and the guiding surface of the guiding plate 1001 extend in the axial direction of the lock cylinder groove 6, so that the limiting flange 1002 is fixed on the inner side surface of the lock cylinder groove 6, and at the same time, the relative position of the guiding plate 1001 and the outer surface of the second housing 10 is fixed. The arrangement of the structure can make the connection relationship between the second shell 10 and the lock body shaft sleeve 5 more compact and tight, thereby improving the installation effect of the whole structure of the lock and the structural stability in subsequent use.

In an alternative embodiment of the present invention, the second housing 10 includes a position-limiting adjustment plate 1003 for limiting the movement of the first housing 9, and as shown in fig. 1 to 2, the position-limiting adjustment plate 1003 is disposed on an outer side surface of the second housing 10, extends in a direction close to the first housing 9, and limits the first housing 9 by contacting with the first housing 9 or an outer side surface of the lock cylinder 1. Thereby achieving the effect of limiting the movement trajectory of the external member provided with the first housing 9 and the lock cylinder 1 in the state where the lock is in the disengaged unlocked state. In the following optional implementation of the present invention, the limit adjusting plate 1003 can contact with the external member provided with the first housing 9 and the lock cylinder 1, so as to achieve the effect of limiting the motion track of the external member when the lock is in the state of being disengaged and unlocked.

In a further alternative embodiment of the present invention, a limiting groove or a limiting protrusion for fixing the position of the second housing 10 is provided on the outer side surface of the lock cylinder 1, the first housing 9 or the external member having the first housing 9 and the lock cylinder 1, corresponding to the limiting adjustment plate 1003, and further optionally, the limiting adjustment plate 1003 is a plate-shaped structure having a limiting flange and provided on the outer side surface of the second housing 10, and the lock cylinder 1 is provided with a limiting groove for matching and fixing the limiting flange. Therefore, the effect of limiting the motion track of the external component when the lock is in a state of being separated from the unlocking state is better realized.

In order to improve the adaptability of the lock, in an optional embodiment of the invention, one end of the lock tongue 7, which is far away from the lock cylinder shaft sleeve 3, is provided with a plurality of adjusting nuts 11, and the lock tongue 7 can adjust the relative position of the lock tongue in the axial channel 2 and the depth of the lock tongue in the lock tongue accommodating limiting counter bore 503 in a locking state under the action of the adjusting nuts 11, so that the adjustment of work required by locking and unlocking of the lock is realized, and the requirements of different use scenes on the locking force of locks with different work sizes can be met. In a further optional embodiment, a buffer gasket 12 is arranged between the adjusting nuts 11, preferably, the buffer gasket 12 is a rubber ring, and the buffer gasket 12 can relieve stress concentration caused by mutual work between the adjusting nuts 11 and the lock tongue 7, so that the stability of movement of the lock tongue 7 in the axial channel 2 can be improved, and the situation that the lock cannot be normally locked or unlocked due to lock tongue jamming caused by uneven stress on the lock tongue 7 is avoided.

The invention provides a hopper door;

the hopper door comprises a hopper door body, a hopper door push rod and any one of the locks, the lock is arranged between the hopper door body and the hopper door push rod, the lock can be switched between a locking state and an unlocking state, when the lock is in the locking state, the hopper door body is connected with the hopper door push rod, and when the lock is in the unlocking state, a channel is formed between the hopper door body and the hopper door push rod.

According to the lock column of the lock on the bucket door, the lock column shaft sleeve is arranged in the large-diameter channel section of the lock tongue moving channel of the lock tongue, so that the movement of the lock tongue is limited in a guiding manner, the possibility that the radial position of the lock tongue in the lock tongue moving channel can be subjected to offset deformation is reduced, and when the bucket door is installed on a working bucket, the technical problem that a push rod of the bucket door cannot be pushed by a wedge block when the working bucket is recovered and the bucket door cannot be recovered in place due to the fact that the locking structure of the bucket door is locked due to deformation under the condition that the working bucket structure is slightly deformed or the manufacturing error of the bucket door is large can be solved.

The invention provides a working bucket which can be arranged on a ladder frame;

as shown in fig. 4 to 5, the working bucket 14 includes the above-described door 13, and the door 13 is used to perform switching operation between the locked state and the unlocked state of the door 13 by the pushing structure on the ladder frame 15.

According to the working bucket, the lock cylinder shaft sleeve is arranged in the large-diameter channel section of the lock tongue moving channel of the lock tongue through the lock on the bucket door to carry out guided limiting on the movement of the lock tongue, so that the possibility that the radial position of the lock tongue in the lock tongue moving channel can deviate and deform is reduced, and the technical problem that the working bucket cannot be recovered in place due to the fact that the locking structure of the bucket door is locked due to deformation under the condition that the working bucket structure is slightly deformed or the manufacturing error of the bucket door is large, and the situation that the push rod of the bucket door cannot be pushed by the wedge block when the working bucket is recovered and the bucket door cannot be opened is caused can be avoided.

The invention provides an aerial ladder device;

the aerial ladder device comprises the working bucket 14 and the ladder frame 15, wherein the ladder frame 15 opens the bucket door 13 of the working bucket 14 through the pushing structure, and folds the working bucket 14 and the ladder frame 15 through the channel of the bucket door 13.

The invention provides a vehicle;

this vehicle includes automobile body and foretell aerial ladder device, and this aerial ladder device sets up on the automobile body, and the closure state and the unblock state of the lock between the hopper door body that realizes hopper door 13, the hopper door push rod freely switch over in order to form and supply ladder frame 15 and work to fight 14 and carry out under the folding prerequisite, and this vehicle can be better transportation aerial ladder and provide high altitude construction, and more conventional aerial ladder vehicle can effectual reduction vehicle's maintenance rate, improves the operating efficiency, can more effectual assurance operation's safety.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. It should be noted that the technical features described in the above embodiments can be combined in any suitable manner, and the invention is not further described in various possible combinations.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. The lock cylinder is characterized in that the lock cylinder is used for being arranged in a locking structure to limit a lock bolt, an axial channel (2) is formed inside the lock cylinder (1), the axial channel (2) comprises a small-diameter channel section (201) and a large-diameter channel section (202) which are axially arranged, a lock cylinder shaft sleeve (3) is arranged in the large-diameter channel section (202), and a lock bolt moving channel (4) is formed by the inner wall channel of the lock cylinder shaft sleeve (3) and the small-diameter channel section (201) together.

2. A lock cylinder according to claim 1, characterized in that the cylinder sleeve (3) is a sleeve of nylon or self-lubricating material.

3. The utility model provides a lock body axle sleeve, its characterized in that for place in the closure structure in order to carry out the spring bolt spacing, lock body axle sleeve (5) are including being arranged in lock body axle sleeve outer wall (501) and axle sleeve end wall (502) that the laminating set up in lock post recess (6) that correspond lock post (1) set up, and lock body axle sleeve outer wall (501) and axle sleeve end wall (502) enclose to become to be used for holding spring bolt (7) and carry out spacing spring bolt holding limiting counterbore (503) to the terminal surface of spring bolt (7).

4. The lock body sleeve of claim 3, wherein said entry to said bolt receiving limit counterbore (503) includes a beveled flare (504) extending radially outward to have a beveled leading surface.

5. A lock sleeve according to claim 3, characterised in that the lock sleeve outer wall (501) is provided with trapezoidal projections (505) on its outer side.

6. A locking structure, characterized in that the locking structure comprises a lock cylinder, a lock tongue (7), a spring (8), a lock body shaft sleeve and a lock cylinder groove (6), the lock cylinder is the lock cylinder (1) of the claim 1 or 2, the lock tongue (7) moves along a lock tongue moving channel (4) under the action of the spring (8) arranged in the small-diameter channel section (201) to form the switching of the connection locking state and the disconnection unlocking state with the lock body shaft sleeve (5) in the lock cylinder groove (6);

spring (8) cover is established on spring bolt (7), be equipped with the boss that is used for overlap joint spring (8) on the medial surface of path section (201).

7. A lock body sleeve (5) according to claim 6, wherein said lock body sleeve is according to any one of claims 3 to 5.

8. A lock, characterized in that, the lock includes first casing (9), second casing (10) and claim 6 or 7 the closure structure, lock post (1), spring bolt (7), spring (8) and lock post axle sleeve (3) pass through first casing (9) set up, lock post recess (6) and lock body axle sleeve (5) pass through second casing (10) set up, first casing (9) and second casing (10) correspond and set up on being used for needing to carry out the exterior component that the closure is connected.

9. Lock according to claim 8, characterized in that the outer side of the second housing (10) is provided with a guide plate (1001).

10. The lock of claim 9, wherein when the lock body sleeve (5) is provided with a trapezoidal projection (505) on its outer side, the second housing (10) includes a retaining flange (1002) disposed along the inner side of the lock cylinder recess (6) and retaining the trapezoidal projection (505) in the lock cylinder recess (6).

11. The lock according to claim 9, characterized in that the second housing (10) comprises a limit adjustment plate (1003) for limiting the movement of the first housing (9).

12. The lock according to claim 11, characterized in that a limiting groove or a limiting protrusion for position fixation with the second housing (10) is provided on the outer side of the lock cylinder (1) or on the first housing (9) corresponding to the limiting adjustment plate (1003).

13. The lock according to claim 8, characterized in that the end of the bolt (7) remote from the cylinder sleeve (3) is provided with a plurality of adjusting nuts (11), between which adjusting nuts (11) a cushion washer (12) is arranged.

14. A hopper door, comprising a hopper door body, a hopper door push rod and a lock as claimed in any one of claims 8 to 13, wherein the lock is arranged between the hopper door body and the hopper door push rod, the lock can be switched between a locking state and an unlocking state, the hopper door body is connected with the hopper door push rod when in the locking state, and a passage is formed between the hopper door body and the hopper door push rod when in the unlocking state.

15. A working bucket, characterized in that the working bucket is arranged on the ladder rack, the working bucket comprises the gate (13) of claim 14, and the gate (13) is used for switching the locking state and the unlocking state of the gate (13) under the action of a pushing structure on the ladder rack.

16. An aerial ladder device, characterized in that it comprises a working bucket (14) according to claim 15 and a ladder rack (15) which opens the gate (13) of the working bucket (14) by means of a lifting structure and folds the working bucket (14) with the ladder rack (15) through the passage of the gate (13).

17. A vehicle comprising a body and the aerial ladder device of claim 16, the aerial ladder device being disposed on the body.