CN215861163U

CN215861163U - Self-locking device in telescopic sleeve

Info

Publication number: CN215861163U
Application number: CN202122186146.8U
Authority: CN
Inventors: 方聚成; 方霄
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-18
Anticipated expiration: 2031-09-09

Abstract

The utility model belongs to the technical field of self-locking, solves the technical problems of troublesome operation and high use cost of a locking mechanism in the prior art, and provides an internal self-locking device of a telescopic sleeve, which comprises the telescopic sleeve, wherein the telescopic sleeve comprises a first sleeve and a second sleeve, the second sleeve is sleeved in the first sleeve, and the second sleeve is internally provided with the locking mechanism; the locking mechanism comprises a trigger rod and a hook, a guide plate horizontally arranged is arranged on the inner side wall of the second sleeve, a guide hole is vertically formed in the guide plate, the trigger rod is arranged in the guide hole in a sliding mode, a fixed rod is arranged on the inner side wall of the second sleeve and is parallel to the guide plate, and a coaxial and integrated trigger wheel, a cam and a positioning wheel are arranged on the fixed rod in a rotating mode. The self-locking device in the telescopic sleeve has the advantages of convenient operation of the locking mechanism and low use cost.

Description

Self-locking device in telescopic sleeve

Technical Field

The utility model relates to the technical field of self-locking, in particular to a self-locking device in a telescopic sleeve.

Background

Construction machine for use in construction works, such as: the height of the cab instrument desk needs to be adjusted according to the requirements of operating the use condition, so that the cab instrument desk needs to be applied to lifting mechanisms such as telescopic sleeves and the like; the telescopic sleeve who uses at present on the market mostly relies on outside locking mechanism to go on when locking the location, and outside locking mechanism passes through artifical manual locking, and troublesome poeration has reduced production work efficiency, also has the mode that adopts automatically controlled locking, but automatically controlled locking mode, and the structure is complicated, and use cost is high, is not suitable for some complicated operational environment.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an internal self-locking device of a telescopic sleeve, which is used for solving the technical problems of troublesome operation and high use cost of the existing locking mechanism.

The embodiment of the utility model provides a self-locking device in a telescopic sleeve, which comprises the telescopic sleeve, wherein the telescopic sleeve comprises a first sleeve and a second sleeve, the second sleeve is sleeved in the first sleeve, and a locking mechanism is arranged in the second sleeve;

the locking mechanism comprises a trigger rod and a hook, a guide plate horizontally arranged is arranged on the inner side wall of the second sleeve pipe, the guide plate is vertically provided with a guide hole, the trigger bar is arranged in the guide hole in a sliding way, the inner side wall of the second sleeve is provided with a fixed bar, the fixed rod is arranged in parallel with the guide plate, a trigger wheel, a cam and a positioning wheel which are coaxially connected into a whole are rotationally arranged on the fixed rod, one side of the positioning wheel is provided with a positioning clamping piece for positioning the positioning wheel, the side surface of the trigger rod close to the trigger wheel is provided with a clamping block for driving the trigger wheel to rotate, the clamping block is abutted against the trigger wheel, the connecting end of the hook is hinged on the inner side wall of the second sleeve pipe, after the hook rotates to the maximum swinging position, the free end of the cam is abutted to the inner wall of the first sleeve, the cam is abutted to the hook in the horizontal state, and the hook strip is formed on the inner wall of the first sleeve.

The working principle and the process are as follows:

when the locking mechanism moves in the operation process, the second sleeve moves upwards for a certain distance firstly when moving for the first time, then the trigger rod returns to the position and then moves downwards, when the trigger rod jacks upwards along the long hole, the clamping block drives the trigger wheel to rotate for 90 degrees, and simultaneously the cam also pushes the hook to open outwards when rotating for 90 degrees (horizontally), at the moment, the hook can be hooked to the hooking strip on the inner wall of the first sleeve, the integral hanging bracket is hung, and the trigger rod returns when being hung; meanwhile, the second sleeve is locked by gravity and the cam and does not move up and down any more, the lifting appliance can be integrally lifted to be separated from the steel plate, and the positioning wheel and the positioning clamping piece realize accurate positioning of the cam position;

when the second sleeve moves downwards for the second time and the trigger rod is jacked upwards again, the trigger wheel is driven to rotate for 90 degrees, and the hook is retracted inwards when the cam also rotates for 90 degrees (is erected), at the moment, the hook cannot be hooked on the hooking strip on the inner wall of the first sleeve, so that the upper part of the hanger frame rises to drive the grabbing rod to grab the plate, and the trigger rod returns when the hanger is hoisted; when the second sleeve moves again, the second sleeve returns to the first downward movement state; a locking and unlocking cycle is realized through the first and second up-and-down movements of the cross beam.

Further, still include the mounting panel, the vertical setting of mounting panel is on the sheathed tube inner wall of second, the dead lever sets up perpendicularly on the mounting panel, the deflector sets up on the mounting panel.

The mounting plate is favorable for the integral disassembly and assembly of the locking mechanism.

Furthermore, four arc grooves are formed in the circumferential side face of the positioning wheel, the four arc grooves are distributed in an array mode relative to the axis circumference of the positioning wheel, the positioning fastener comprises a positioning rod vertically arranged on a guide plate, the positioning rod is T-shaped and is connected with the guide plate in a sliding mode, the positioning rod is arranged above the positioning wheel, the lower end of the positioning rod is spherical, and the lower end of the positioning rod is abutted to the arc grooves in the positioning wheel.

The locating rod and the arc-shaped groove are arranged, so that the cam can rotate at every time and is located in a vertical state or a horizontal state, and the condition of inaccurate state can not occur.

Further, the fixture block is the right triangle structure, and its inclined plane orientation triggers the wheel and be the arcwall face, the initial condition of cam is vertical state, it is the dart form in four corners to trigger the wheel, the four corners sideline that triggers the wheel is the arc sideline.

The dart-shaped structure in the four corners of the trigger wheel and the inclined plane of the clamping block are arranged on the arc-shaped surface, so that the clamping block can move downwards, and the clamping block cannot be clamped when moving upwards.

Furthermore, a long hole is formed in the trigger rod, and the fixture block is arranged in the long hole and fixedly connected with the trigger rod through a bolt.

The setting of slot hole makes things convenient for the dismouting and the regulation of fixture block to be favorable to the fixed of fixture block, compare in integrated into one piece's structure more firm.

Further, the cam is arranged between the trigger wheel and the positioning wheel.

The cam is positioned between the trigger wheel and the positioning wheel, so that the stress is more uniform, and the best hook supporting force can be achieved.

Furthermore, the connecting line between the side line of the arc-shaped groove and the circumferential side surface of the positioning wheel is rounded.

The fillet is arranged to be favorable for the locating lever to be jacked up, and the phenomenon of blocking can not appear.

In conclusion, the beneficial effects of the utility model are as follows:

the hook lifting mechanism can drive the cam to rotate through the arrangement of the trigger rod and the trigger wheel, so that the hook can be ejected and put down, a mechanical dead weight locking technology is adopted, extra power supply is not needed, the use cost is reduced, the hook lifting mechanism is of a pure mechanical structure, the failure rate is low, and the maintenance cost is low; the self-locking device is locked by one-time hoisting, unlocked by the second hoisting, automatically switched, hooked and hooked conveniently and quickly, and manual operation is reduced.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

fig. 2 is an overall perspective view of the present invention.

In the figure: 1. a first sleeve; 2. a second sleeve; 3. mounting a plate; 4. a guide plate; 5. a trigger lever; 6. a clamping block; 7. positioning wheels; 8. hooking; 9. fixing the rod; 10. positioning a rod; 11. a trigger wheel; 12. a cam; 13. a long hole; 14. hooking the hanging strip; 15. an arc-shaped groove.

Detailed Description

Example 1:

as shown in fig. 1-2, a self-locking device in a telescopic sleeve comprises a telescopic sleeve, the telescopic sleeve comprises a first sleeve 1 and a second sleeve 2, the second sleeve 2 is sleeved in the first sleeve 1, and a locking mechanism is arranged in the second sleeve 2;

the locking mechanism comprises a trigger rod 5 and a hook 8, a guide plate 4 horizontally arranged is arranged on the inner side wall of the second sleeve 2, a guide hole is vertically formed in the guide plate 4, the trigger rod 5 is slidably arranged in the guide hole, a fixing rod 9 is arranged on the inner side wall of the second sleeve 2, the fixing rod 9 is parallel to the guide plate 4, a trigger wheel 11, a cam 12 and a positioning wheel 7 which are coaxially connected into a whole are rotatably arranged on the fixing rod 9, a positioning fastener for positioning the positioning wheel 7 is arranged on one side of the positioning wheel 7, a clamping block 6 for driving the trigger wheel 11 to rotate is arranged on the side surface of the trigger rod 5 close to the trigger wheel 11, the clamping block 6 is abutted against the trigger wheel 11, the connecting end of the hook 8 is hinged on the inner side wall of the second sleeve 2, after the hook 8 rotates to the maximum swinging position, the free end of the hook is abutted against the inner wall of the first sleeve 1, and the cam 12 is abutted against the hook 8 when in the horizontal state, the inner wall of the first sleeve 1 is formed with a hook strip 14.

Still include mounting panel 3, the vertical setting of mounting panel 3 is on the inner wall of second sleeve pipe 2, and dead lever 9 sets up perpendicularly on mounting panel 3, and deflector 4 sets up on mounting panel 3.

The setting of mounting panel 3, locking mechanism sets up on same mounting panel 3, is favorable to the holistic dismouting of locking mechanism.

Four arc grooves 15 have been seted up on the circumference side of locating wheel 7, and four arc grooves 15 distribute for the axis circumference array of locating wheel 7, and the location fastener includes vertical locating lever 10 that sets up on deflector 4, and locating lever 10 is the T font, and locating lever 10 and deflector 4 sliding connection, locating lever 10 set up in locating wheel 7 top, and the lower extreme of locating lever 10 is the sphere, and the lower extreme of locating lever 10 and the arc groove 15 looks butt on the locating wheel 7.

The arrangement of the positioning rod 10 and the arc-shaped groove 15 can enable the cam 12 to be in a vertical state or a horizontal state every time the cam rotates, and the situation that the states are inaccurate is avoided.

The working principle and the process are as follows:

in the operation process of the locking mechanism, when the second sleeve 2 moves for the first time, the second sleeve moves upwards for a certain distance, then the trigger rod 5 returns to the original position and then moves downwards, when the trigger rod 5 is jacked upwards along the long hole 13, the clamping block 6 drives the trigger wheel 11 to rotate for 90 degrees, and simultaneously the cam 12 also rotates for 90 degrees (horizontally) and jacks the hook 8 to open outwards, at the moment, the hook 8 can be hooked to the hooking strip 14 on the inner wall of the first sleeve 1, the integral hanging bracket is hoisted, and the trigger rod 5 returns when being hoisted; meanwhile, the second sleeve 2 is locked by gravity and the cam 12 and does not move up and down any more, the lifting appliance can be integrally lifted to be separated from the steel plate, and the positioning wheel 7 and the positioning clamping piece realize accurate positioning of the position of the cam 12;

when the second sleeve 2 moves downwards for the second time and the trigger rod 5 is jacked upwards again, the trigger wheel 11 is driven to rotate by 90 degrees, and the hook 8 is retracted inwards when the cam 12 also rotates by 90 degrees (is erected), at the moment, the hook 8 cannot be hooked on the hook strip 14 on the inner wall of the first sleeve 1, so that the upper part of the hanger frame rises to drive the grabbing rod to grab the plate, and the trigger rod 5 returns when being hoisted; the second sleeve 2 returns to the first downward movement state when moving again; a locking and unlocking cycle is realized through the first and second up-and-down movements of the cross beam.

Example 2:

as shown in fig. 1 and fig. 2, the present embodiment is different from embodiment 1 in that the fixture block 6 is in a right triangle structure, the inclined surface of the fixture block faces the trigger wheel 11 and is an arc surface, the initial state of the cam 12 is a vertical state, the trigger wheel 11 is in a four-corner dart shape, and four corner edges of the trigger wheel 11 are all arc edges.

The dart-shaped structure in 11 four corners of trigger wheel and the setting that 6 inclined planes of fixture block are the arcwall face are favorable to fixture block 6 to remove downwards, and when 6 upward movements of fixture block simultaneously, the dead phenomenon of card can not appear.

Embodiment 2 the rest of the structure and the operation principle are the same as those of embodiment 1.

Example 3:

as shown in fig. 1 and fig. 2, in this embodiment, on the basis of embodiment 1, a long hole 13 is formed in the trigger rod 5, and the latch 6 is disposed in the long hole 13 and fixedly connected to the trigger rod 5 through a bolt.

The setting of slot hole 13 makes things convenient for the dismouting and the regulation of fixture block 6 to be favorable to fixture block 6's fixed, compare in integrated into one piece's structure more firm.

Embodiment 3 the rest of the structure and the operation principle are the same as those of embodiment 1.

Example 4:

as shown in fig. 1 and 2, in the present embodiment, on the basis of embodiment 1, a cam 12 is provided between a trigger wheel 11 and a positioning wheel 7.

The cam 12 is positioned between the trigger wheel 11 and the positioning wheel 7, so that the stress is more uniform, and the best supporting force of the hook 8 can be achieved.

Example 4 the rest of the structure and the operation principle are the same as those of example 1.

Example 5:

as shown in fig. 1 and fig. 2, in this embodiment, based on embodiment 1, the line connecting the side line of the arc-shaped groove 15 and the circumferential side surface of the positioning wheel 7 is rounded.

The arrangement of the fillet is beneficial to jacking the positioning rod 10, and the phenomenon of blocking cannot occur.

Example 5 the rest of the structure and the operation principle are the same as those of example 1.

Example 6:

as shown in fig. 1-2, in the present embodiment, on the basis of embodiment 2, a cam 12 is arranged between a trigger wheel 11 and a positioning wheel 7.

Example 6 the rest of the structure and the operation principle are the same as those of example 2.

Example 7:

as shown in fig. 1 and fig. 2, in this embodiment, on the basis of embodiment 2, a long hole 13 is formed in the trigger rod 5, and the latch 6 is disposed in the long hole 13 and fixedly connected to the trigger rod 5 through a bolt.

Example 7 the rest of the structure and the operation principle are the same as those of example 2.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-locking device in a telescopic sleeve is characterized by comprising the telescopic sleeve, wherein the telescopic sleeve comprises a first sleeve and a second sleeve, the second sleeve is sleeved in the first sleeve, and a locking mechanism is arranged in the second sleeve;

2. The telescopic internal self-locking device according to claim 1, further comprising a mounting plate vertically disposed on an inner wall of the second sleeve, wherein the fixing rod is vertically disposed on the mounting plate, and the guide plate is disposed on the mounting plate.

3. The self-locking device in the telescopic sleeve according to claim 2, wherein four arc-shaped grooves are formed in the circumferential side surface of the positioning wheel, the four arc-shaped grooves are distributed in a circumferential array relative to the axis of the positioning wheel, the positioning fastener comprises a positioning rod vertically arranged on a guide plate, the positioning rod is T-shaped, the positioning rod is slidably connected with the guide plate, the positioning rod is arranged above the positioning wheel, the lower end of the positioning rod is spherical, and the lower end of the positioning rod is abutted to the arc-shaped grooves in the positioning wheel.

4. The telescopic sleeve internal self-locking device according to claim 2, wherein the fixture block is in a right-angled triangle structure, an inclined surface of the fixture block faces the trigger wheel and is an arc-shaped surface, an initial state of the cam is a vertical state, the trigger wheel is in a four-corner dart shape, and four corner sidelines of the trigger wheel are all arc sidelines.

5. The self-locking device in an expansion sleeve according to any one of claims 1 to 4, wherein the trigger rod is provided with a long hole, and the fixture block is arranged in the long hole and fixedly connected with the trigger rod through a bolt.

6. The telescopic self-locking device as claimed in claim 5, wherein the cam is arranged between the trigger wheel and the positioning wheel.

7. The self-locking device in a telescopic sleeve according to claim 3, wherein the connecting line between the side line of the arc-shaped groove and the circumferential side surface of the positioning wheel is rounded.