CN112790507A - Support rod locking mechanism and lifting table - Google Patents
Support rod locking mechanism and lifting table Download PDFInfo
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- CN112790507A CN112790507A CN202011371212.2A CN202011371212A CN112790507A CN 112790507 A CN112790507 A CN 112790507A CN 202011371212 A CN202011371212 A CN 202011371212A CN 112790507 A CN112790507 A CN 112790507A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 55
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 230000036632 reaction speed Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B9/00—Tables with tops of variable height
- A47B9/10—Tables with tops of variable height with vertically-acting fluid cylinder
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
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Abstract
The invention relates to the field of lifting devices, in particular to a supporting rod locking mechanism and a lifting table, which comprise an inner pipe, an outer pipe and a pressure column, wherein the top of the inner pipe is provided with an internal thread sleeve; a first gasket is arranged on the inner side of the upper part of the outer pipe, a braking mechanism is fixed above the first gasket, and a synchronizing mechanism is arranged at the top of the pressure column through the first gasket and the braking mechanism; the bottom of the inner pipe is provided with a second gasket, and the bottom of the pressure column is fixed with a first bearing. The pressure column is always in a normally open state, so that starting force does not need to be overcome during each starting, the starting speed and the reaction speed are higher, and starting delay does not need to be waited.
Description
Technical Field
The invention relates to the field of lifting devices, in particular to a supporting rod locking mechanism and a lifting table.
Background
A gas spring (gas spring) is an industrial accessory which can play the roles of supporting, buffering, braking, height adjusting, angle adjusting and the like. The pressure column may be used in a variety of support applications.
Because the traditional gas spring is internally provided with a locking device, when the gas spring is started every time, the gas spring can be stretched only after overcoming the starting force, so that the gas spring is often difficult to open, the waiting starting time is long, and the reaction speed is slow.
Disclosure of Invention
The invention aims to provide a supporting rod locking mechanism and a lifting table which are high in starting speed and do not need to be started.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a supporting rod locking mechanism comprises an inner pipe, an outer pipe and a pressure column, wherein an internal thread sleeve is fixed at the top of the inner pipe, the pressure column is arranged in the internal thread sleeve, a first thread is arranged on the outer side of the pressure column, a second thread matched with the first thread is arranged on the inner side of the internal thread sleeve, and the first thread and the second thread are not self-locked;
a first gasket is arranged on the inner side of the upper part of the outer pipe, a braking mechanism is fixed above the first gasket, and a synchronizing mechanism is arranged in the braking mechanism;
the inner tube bottom is equipped with the second gasket, be fixed with first bearing above the second gasket, the pressure column bottom is fixed with first bearing.
Further, the internal thread sleeve comprises an outer sleeve and an inner sleeve which are fixedly connected, the inner sleeve is arranged in the outer sleeve, a second thread is arranged in the inner sleeve, a first convex rib is arranged on the outer side of the outer sleeve, and a rib groove is formed in the middle of the first convex rib;
the top of the inner pipe is provided with a mounting groove matched with the first convex rib, and the first convex rib is matched with the inner wall of the outer pipe.
Further, the outer sleeve and the inner sleeve are integrally formed or detachably fixedly connected through screws and buckles.
Furthermore, the pressure column comprises a cylinder barrel and a piston rod, the piston rod penetrates through the cylinder barrel and can move in the cylinder barrel, a pressure stabilizing piston is arranged at the top of the piston rod, a flow guide hole is formed in the side edge of the pressure stabilizing piston, and the cylinder barrel and the piston rod synchronously rotate or relatively rotate.
Further, the outer surface of the cylinder barrel is provided with a thread groove to form a first thread.
Furthermore, the outer surface of the cylinder barrel is provided with an external thread sleeve, a first thread is arranged on the external thread sleeve, and the cylinder barrel and the external thread sleeve synchronously rotate or relatively rotate.
Further, the synchronous mechanism comprises an external gear, the middle of the upper surface of the external gear extends upwards, a second bearing is sleeved outside the external gear, and a through hole is formed in the external gear;
and a synchronizing shaft which synchronously rotates along with the cylinder barrel or the external thread sleeve is arranged above the pressure column, the appearance of the synchronizing shaft is matched with the inner shape of the through hole, and the appearance of the synchronizing shaft is not circular.
Furthermore, the brake mechanism comprises a third gasket fixed on the upper surface of the first gasket, a brake channel arranged on the upper surface of the third gasket, and a brake arranged in the brake channel and capable of moving along the arrangement direction of the brake channel, wherein one end of the brake is provided with a tooth part and matched with the outer gear, and the other end of the brake is connected with an external handle;
the middle of the synchronizing shaft is provided with a threaded hole, and the top of the synchronizing shaft is fixed with a cover plate through a screw.
Furthermore, a plurality of sliding grooves are formed in the inner wall of the outer pipe along the axial direction;
a patch fixed with a second convex rib through a boss is arranged on the outer wall of the inner pipe, and the second convex rib is matched with the sliding groove;
and a lubricating oil groove is formed in the outer surface of the patch.
The invention also discloses a lifting table which is lifted by utilizing the supporting rod locking mechanism, and is characterized by further comprising a table top plate and a bottom support;
a connecting plate is fixed at the top of the outer pipe, and the tabletop plate is fixedly connected with the connecting plate;
the collet set up in inner tube bottom and with second gasket fixed connection.
In summary, compared with the conventional technical means, the technical scheme of the invention has the following beneficial effects:
1. the pressure column is always in a normally open state, so that starting force does not need to be overcome during each starting, the starting speed and the reaction speed are higher, and starting delay does not need to be waited.
2. The lifting is completed by utilizing the expansion of the pressure columns, the lifting speed is adjusted by matching with the density of the threads, the lifting is stable, and no huge vibration is generated.
3. The invention has small limitation on the shapes of the inner pipe and the outer pipe and high universality.
4. The invention has simple structure, easy replacement of each part and higher reliability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a single-post support rod according to the present invention;
FIG. 2 is a front view of FIG. 1 and a cross-sectional view A-A thereof;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is an enlarged view of FIG. 2 at B;
FIG. 5 is an enlarged view at C of FIG. 2;
FIG. 6 is a schematic perspective view of the present invention after the cover plate is hidden;
FIG. 7 is a schematic cross-sectional view of the pressure column of the present invention with a threaded sleeve rotating synchronously therewith;
FIG. 8 is a schematic cross-sectional view of the pressure column of the present invention with a threaded sleeve and a threaded sleeve rotated relative thereto;
FIG. 9 is a schematic cross-sectional view of a pressure column according to the present invention;
FIG. 10 is a perspective view of the internally threaded sleeve of the present invention;
FIG. 11 is a schematic view of the upper structure of the inner pipe of the present invention;
FIG. 12 is a schematic view of the present invention showing the fastening of the female thread bush with a screw;
FIG. 13 is a schematic view of the mating structure of the outer tube and the inner tube of the present invention;
FIG. 14 is a schematic view of the hidden inner tube of FIG. 12;
FIG. 15 is a schematic perspective view of the patch of the present invention mated with a boss;
FIG. 16 is a schematic view of a first embodiment of the elevating table of the present invention;
figure 17 is a schematic illustration showing the table top removed in figure 16;
FIG. 18 is a second structural view of the elevating table of the present invention;
fig. 19 is a schematic perspective view of the female thread bush of the present invention when the external shape is circular.
Wherein:
1. the bearing comprises an inner pipe, 11, an internal thread sleeve, 111, an outer sleeve, 112, an inner sleeve, 113, a first rib, 114, a rib groove, 115, a mounting groove, 12, a second thread, 13, a second gasket, 14, a first bearing, 15, a boss, 16, a patch, 17, a lubricating oil groove and 18, and a second rib;
2. the outer tube, 21, the first gasket, 22, the chute;
3. the hydraulic cylinder comprises a pressure column, 31, a first thread, 32, a cylinder barrel, 33, a piston rod, 34, a pressure stabilizing piston, 35, a thread groove, 36, an external thread sleeve, 37, a synchronizing shaft, 38, a threaded hole and 39, a flow guide hole;
4. the brake mechanism, 41, a third gasket, 42, a brake channel, 43, a brake, 431, a groove, 44, a tooth part, 45, a handle, 451, a pull rope, 452, a pull head, 453, a handle, 454, a nut, 455, a spring;
5. the synchronous mechanism, 51, an external gear, 52, a second bearing, 53, a through hole;
6. a cover plate;
7. a table top board 71, a connecting board;
8. and a bottom support.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention is further illustrated with reference to the following figures:
referring to fig. 1-7, a support rod locking mechanism comprises an inner tube 1, an outer tube 2 and a pressure column 3, wherein an internal thread sleeve 11 is fixed on the top of the inner tube 1, the pressure column 3 is arranged in the internal thread sleeve 11, a first thread 31 is arranged on the outer side of the pressure column 3, a second thread 12 matched with the first thread 31 is arranged on the inner side of the internal thread sleeve 11, and the first thread and the second thread are not self-locked;
a first gasket 21 is arranged on the inner side of the upper part of the outer pipe 2, a braking mechanism 4 is fixed above the first gasket 21, and a synchronizing mechanism 5 is arranged in the braking mechanism 4;
the bottom of the inner pipe 1 is provided with a second gasket 13, a first bearing 14 is fixed above the second gasket 13, and the bottom of the pressure column 3 is provided with the first bearing 14.
In the above-mentioned support bar locking mechanism, the inner tube 1 is sleeved in the outer tube 2 to generate relative movement, the top of the inner tube 1 is provided with the internal thread sleeve 11, and the first thread 31 outside the pressure column 3 is matched with the second thread 12 in the internal thread sleeve 11, so that the pressure column 3 can be stretched when rotating.
In the process of stretching and retracting, the pressure column 3 performs spiral motion along with the first thread 31 and the second thread 12 under the action of force, so that the pressure column 3 is driven to rotate left and right. In a specific implementation, in order to enable the pressure column 3 to be telescopic well, the first thread 31 and the second thread 12 which are not self-locked should be selected to prevent the pressure column 3 from being unable to be telescopic due to self-locking of the threads. In the present embodiment, for better implementation, the first thread 31 and the second thread 12 are T-shaped multi-start threads that are not self-locking.
A first gasket 21 is arranged inside the upper end of the outer pipe 2, and a hole with the aperture slightly larger than the outer diameter of the pressure column 3 is formed in the middle of the first gasket 21; the top end of the pressure column 3 is step-shaped, a hole with a hole diameter slightly larger than the outer diameter of the step but smaller than the outer diameter of the main body of the pressure column 3 is formed in the middle of the braking mechanism 4, and the braking mechanism 4 is fixedly connected with the first gasket 21, so that the outer tube 2 can be driven to stretch together with the pressure column 3 when the pressure column 3 is lifted.
Referring to fig. 10-12 and fig. 19, in the present locking mechanism, the internally threaded sleeve 11 includes an outer sleeve 111 and an inner sleeve 112 fixedly connected to each other, and the outer sleeve 111 is sleeved on the outer periphery of the inner sleeve 112 and the two are kept coaxial for achieving the best implementation effect. The inner sleeve 112 is internally provided with a second thread 12, the second thread 12 is matched with the first thread 31, the outer side of the outer sleeve 111 is provided with a first convex rib 113, the middle of the first convex rib 113 is provided with a rib groove 114, and the first convex rib 113 slightly arches outwards and is made of plastic or other elastic materials.
The top of the inner tube 1 is provided with a mounting groove 115 matched with the first convex rib 113, and the first convex rib 113 is matched with the inner wall of the outer tube 2.
In this embodiment, the outer side of the internal thread sleeve 11 is provided with a first rib 113, the first rib 113 is matched with the inner wall of the outer tube 2 and generates friction motion, and a rib slot 114 is formed in the middle of the first rib 113, which has two purposes, 1) oil can be stored in the rib slot 114, so as to prevent the inner tube 1 or the outer tube 2 from being damaged due to dry grinding between the outer tube 2 and the inner tube 1, and simultaneously, the relative motion between the inner tube 1 and the outer tube 2 is more smooth, 2) when the size of the outer tube 2 is deviated, the first rib 113 provided with the rib slot 114 can be elastically compressed, so that the problem of difficult lifting due to excessive friction force cannot occur, the fixing mode of the internal thread sleeve 11 and the inner tube 1 can be a concave-convex buckle mode, and can also be fixed by a pin or other shafts, referring to fig. 10-12, and the connecting mode of the concave-convex buckle is adopted in this.
In one or more embodiments, the outer sleeve 111 and the inner sleeve 112 are integrally formed or detachably and fixedly connected by screws or snaps.
The outer sleeve 111 and the inner sleeve 112 which are formed in an integrated forming mode are connected more stably, the production cost is low, and the production efficiency is high.
When adopting removable modes such as screw or buckle to fix, be convenient for on the one hand the transportation, on the other hand when one of them part of inner sleeve 112 or outer sleeve 111 damages, only need to replace can, cost of maintenance is lower. When the split thread sleeve is adopted for setting, the application occasion is wider, the outer sleeve part can be independently adopted, the outer sleeve part and the inner sleeve part can be combined for use, and the use modes are various. Referring to fig. 12, a method of fixing by a screw is employed.
In the support rod locking mechanism of the present invention, the cross-sectional shapes of the outer tube 2 and the inner tube 1 are not limited, and the pressure column 3 can be allowed to freely extend and contract inside thereof, which is highly versatile.
Referring to fig. 9, the pressure column 3 includes a cylinder 32 and a piston rod 33, the piston rod 33 passes through the cylinder 32 and can move inside, a pressure stabilizing piston 34 is disposed on the top of the piston rod 33, a diversion hole 39 is disposed on a side of the pressure stabilizing piston 34, and the cylinder 32 and the piston rod 33 rotate synchronously or relatively. Referring to fig. 3, the outer surface of the cylinder 32 is provided with a thread groove 35 to form the first thread 31.
After the pressure of the pressure column 3 is released, because the pressure stabilizing piston 34 is provided with the flow hole, the gas pressures at the two ends of the pressure stabilizing piston 34 are equal, the sectional areas of the two sides of the pressure stabilizing piston 34 are different, one end is connected with the piston rod 33, and the other end is not connected with the piston rod, under the action of the gas pressure, the pressure towards the side with the smaller sectional area, namely the elastic force of the pressure column 3 is generated, and the size of the elastic force can be set by setting different nitrogen pressures or piston rods 33 with different diameters.
Referring to fig. 3 to 7, in a locking mechanism for a support rod according to the present invention, a synchronizing mechanism 5 includes an external gear 51, the middle of the upper surface of the external gear 51 extends upward and is sleeved with a second bearing 52 on the outside thereof, and a through hole 53 is formed in the external gear 51;
a synchronizing shaft 37 which synchronously rotates along with the cylinder barrel 32 is arranged above the pressure column 3, the appearance of the synchronizing shaft 37 is matched with the inner shape of the through hole 53, and the appearance of the synchronizing shaft 37 is not circular. Referring to fig. 3, the synchronizing shaft 37 is directly and fixedly connected to the top of the cylinder 32, and for better implementation, the synchronizing shaft 37 may be integrally formed with the cylinder 32 or may be connected in another fixed manner, and the synchronizing shaft 37 may be coaxial with the cylinder 32 to prevent the shaking of the external gear 51 when the external gear rotates.
The brake mechanism 4 in the support rod locking mechanism of the invention comprises a third shim 41 fixed on the upper surface of the first shim 21, a brake 43 channel 42 arranged on the upper surface of the third shim 41, and a brake 43 arranged in the brake 43 channel 42 and capable of moving along the arrangement direction, wherein one end of the brake 43 is provided with a tooth part 44 and matched with the external gear 51, and the other end is connected with an external handle 45; a threaded hole 38 is formed in the middle of the synchronizing shaft 37, and a cover plate 6 is fixed to the top of the synchronizing shaft 37 through a screw.
In the above-described synchronization mechanism 5 and brake mechanism 4, the brake mechanism 4 brakes the synchronization mechanism 5 to stop the rotation of the pressure column 3. The internal shape of the gear of the synchronizing mechanism 5 matches the external shape of the synchronizing shaft 37, and when the external shape of the synchronizing shaft 37 is not circular (refer to fig. 6, which is the shape adopted in the present embodiment), the external gear 51 can be made to rotate in synchronization with the pressure column 3.
In the above-described brake mechanism 4, the brake 43 is a device provided with a tooth portion 44 at one end, the tooth portion 44 of the brake is engaged with the external gear 51, and when the tooth portion 44 of the brake 43 is engaged with the external gear 51, the rotation of the external gear 51 is stopped, the pressure column 3 is braked, and the opening degree of the pressure column 3 is maintained.
The stopper 43 is disposed in the passage 42 of the stopper 43 to move forward and backward, and its movement is controlled by an external handle 45. Referring to fig. 6, the stopper 43 of this embodiment has a groove 431 formed in the middle thereof, the groove 431 is bored at one side thereof so that the cable 451 can pass therethrough, one end of the cable 451 is fixed to a slider 452 in the groove 431, and the other end thereof is connected to a grip 453, and when the slider 452 is pulled by the cable 451, the stopper 43 is withdrawn away from the external gear 51. The front end of the cable 451 is further provided with a screw thread, a nut 454 is sleeved outside the screw thread, a spring 455 is provided between the nut 454 and the brake 43, and when the cable 451 is loosened, the brake 43 is restored under the urging force of the spring 455 to engage the tooth portion 44 with the external gear 51, thereby completing braking.
In the invention, the inner wall of the outer tube 2 is provided with a plurality of sliding grooves 22 along the axial direction; the outer wall of the inner tube 1 is provided with a patch 16 fixed with a second convex rib 18 through a boss 15, and the second convex rib 18 is matched with the sliding groove 22.
When the cross-sectional shapes of the outer pipe 2 and the inner pipe 1 are circular or nearly circular, in the lifting process, the inner pipe 1 and the outer pipe can rotate relatively, which is not beneficial to lifting and locking of the pressure column 3, so that the mode of matching the second convex rib 18 and the sliding groove 22 is adopted, and the outer pipe 2 and the inner pipe 1 can not rotate relatively.
The outer surface of the paster 16 is provided with a lubricating oil groove 17, lubricating oil can be filled in the groove, and similarly, the function of the groove is similar to that of the rib groove arranged in the first convex rib, so that the lubricating oil can be stored, and the friction between the outer tube 2 and the paster 16 is effectively reduced.
The working principle of the invention is briefly described as follows:
in the invention, the pressure column 3 is in a normally open state, the expansion and contraction rate of the pressure column is controlled by the density of the first thread 31 and the second thread 12, and the pressure column 3 can rotate along with the threads in the expansion and contraction process and expand and contract in a spiral state. Accordingly, a synchronizing mechanism 5 and a braking mechanism 4 are provided on the top of the pressure column 3, and when the braking mechanism 4 stops the movement of the synchronizing mechanism 5, the rotation of the pressure column 3 is stopped successively, so that the pressure column 3 is held and the expansion and contraction are suspended.
Compared with the traditional gas spring, the pressure column 3 is kept in a normally open state, the starting force does not need to be overcome during each starting, the opening is smooth, and the starting waiting time is not needed.
Referring to fig. 16-18, the present invention further discloses a lifting table using single-column supporting rods, further comprising a table top 7 and a bottom support 8; a connecting plate 71 is fixed at the top of the outer pipe 2, and the table top plate 7 is fixedly connected with the connecting plate 71; the bottom support 8 is arranged at the bottom end of the inner tube 1 and is fixedly connected with the second gasket 13. The connection mode selected for use in this embodiment is through screw fixed connection.
Example 2:
on the basis of embodiment 1, the present embodiment adopts a manner of providing the external thread bush 36 on the outside of the cylinder tube 32 so as to have the first thread 31.
The external thread sleeve 36 and the pressure column 3 can be kept relatively fixed through injection molding, screw fixation, buckle fixation and other modes, or the external thread sleeve 36 and the pressure column 3 can be kept relatively rotated through matching of a sleeve thread pipe and a bearing or other rotating connection modes.
While the external thread bush 36 and the pressure column 3 are kept rotating synchronously, the above-mentioned synchronizing shaft 37 can be either identical to the embodiment of example 1, i.e. the synchronizing shaft 37 and the cylinder 32 are fixedly connected (see fig. 7), or the synchronizing shaft 37 and the external thread bush 36 are fixedly connected.
Referring to fig. 8, when the external thread bushing 36 and the pressure column 3 are maintained in a relative rotation state, the aforementioned synchronizing shaft 37 is fixedly connected to the top of the external thread bushing 36, and in fig. 8, an inner sleeve is provided at the lower part of the synchronizing shaft 37 and is sleeved in the external thread bushing 36, thereby achieving a simultaneous movement; and a bearing or a ball is arranged between the inner shaft sleeve and the cylinder barrel 32 to keep the synchronous lifting. For better performance, the synchronizing shaft 37 should be coaxial with the external thread bush 36.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A supporting rod locking mechanism is characterized by comprising an inner pipe, an outer pipe and a pressure column, wherein an internal thread sleeve is fixed at the top of the inner pipe, the pressure column is arranged in the internal thread sleeve, a first thread is arranged on the outer side of the pressure column, a second thread matched with the first thread is arranged on the inner side of the internal thread sleeve, and the first thread and the second thread are not self-locked;
a first gasket is arranged on the inner side of the upper part of the outer pipe, a braking mechanism is fixed above the first gasket, and a synchronizing mechanism is arranged in the braking mechanism;
the inner tube bottom is equipped with the second gasket, be fixed with first bearing above the second gasket, the pressure column bottom is fixed with first bearing.
2. The support rod locking mechanism as claimed in claim 1, wherein the internal threaded sleeve comprises an outer sleeve and an inner sleeve which are fixedly connected, the inner sleeve is arranged in the outer sleeve, a second thread is arranged in the inner sleeve, a first rib is arranged on the outer side of the outer sleeve, and a rib groove is formed in the middle of the first rib;
the top of the inner pipe is provided with a mounting groove matched with the first convex rib, and the first convex rib is matched with the inner wall of the outer pipe.
3. The locking mechanism for a supporting rod of claim 2, wherein the outer sleeve and the inner sleeve are integrally formed or detachably and fixedly connected through a screw or a buckle.
4. The locking mechanism for a supporting rod as claimed in claim 1, wherein the pressure column comprises a cylinder and a piston rod, the piston rod passes through the cylinder and can move inside the cylinder, a pressure stabilizing piston is arranged on the top of the piston rod, a flow guiding hole is arranged on the side of the pressure stabilizing piston, and the cylinder and the piston rod rotate synchronously or relatively.
5. A support bar locking mechanism as claimed in claim 4, wherein the cylinder barrel has a threaded groove formed in an outer surface thereof to define the first thread.
6. The support rod locking mechanism as claimed in claim 4, wherein the outer surface of the cylinder barrel is provided with an external thread sleeve, the external thread sleeve is provided with a first thread, and the cylinder barrel and the external thread sleeve rotate synchronously or relatively.
7. The support bar locking mechanism according to claim 5 or 6, wherein the synchronizing mechanism comprises an external gear, the upper surface of the external gear extends upwards in the middle and is sleeved with a second bearing outside the external gear, and a through hole is formed in the external gear;
and a synchronizing shaft which synchronously rotates along with the cylinder barrel or the external thread sleeve is arranged above the pressure column, the appearance of the synchronizing shaft is matched with the inner shape of the through hole, and the appearance of the synchronizing shaft is not circular.
8. The locking mechanism for a supporting rod of claim 7, wherein the brake mechanism comprises a third pad fixed on the upper surface of the first pad, a brake channel arranged on the upper surface of the third pad, and a brake arranged in the brake channel and capable of moving along the arrangement direction of the brake channel, wherein one end of the brake is provided with a tooth part and matched with the outer gear, and the other end of the brake is connected with an external handle;
the middle of the synchronizing shaft is provided with a threaded hole, and the top of the synchronizing shaft is fixed with a cover plate through a screw.
9. The support rod locking mechanism according to claim 1, wherein the inner wall of the outer tube is provided with a plurality of sliding grooves along the axial direction;
a patch fixed with a second convex rib through a boss is arranged on the outer wall of the inner pipe, and the second convex rib is matched with the sliding groove;
and a lubricating oil groove is formed in the outer surface of the patch.
10. The invention also discloses a lifting table which is lifted by the support bar locking mechanism according to any one of claims 1 to 9, and is characterized by further comprising a table top plate and a bottom support;
a connecting plate is fixed at the top of the outer pipe, and the tabletop plate is fixedly connected with the connecting plate;
the collet set up in inner tube bottom and with second gasket fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371212.2A CN112790507A (en) | 2020-11-30 | 2020-11-30 | Support rod locking mechanism and lifting table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371212.2A CN112790507A (en) | 2020-11-30 | 2020-11-30 | Support rod locking mechanism and lifting table |
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| Publication Number | Publication Date |
|---|---|
| CN112790507A true CN112790507A (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011371212.2A Pending CN112790507A (en) | 2020-11-30 | 2020-11-30 | Support rod locking mechanism and lifting table |
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| CN (1) | CN112790507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116869277A (en) * | 2023-09-01 | 2023-10-13 | 江苏慕林智造科技股份有限公司 | Self-locking push rod of electric lifting table and self-locking method |
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| CN116869277B (en) * | 2023-09-01 | 2023-11-21 | 江苏慕林智造科技股份有限公司 | Self-locking push rod of electric lifting table and self-locking method |
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