CN217264505U

CN217264505U - Portable jacking mechanism

Info

Publication number: CN217264505U
Application number: CN202221127133.1U
Authority: CN
Inventors: 于士祥; 李宁; 李�根
Original assignee: Hebei Demai Transmission Machinery Co ltd
Current assignee: Hebei Demai Transmission Machinery Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-23
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to the field of jacking mechanisms, in particular to a portable jacking mechanism, which comprises a transmission screw rod, a rotary arm, a transmission nut, a sheath, an elastic collar for a shaft, a supporting seat and a base; the base comprises a flat plate and a cylinder body, the top of the transmission screw rod is provided with a ball head, a ball head flange is rotatably arranged on the ball head, and the bottom of the transmission screw rod is provided with a guide assembly for limiting the transmission screw rod to move along the vertical direction; the supporting seat is connected with the top of the cylinder body, a cylindrical thrust roller bearing is arranged at the top of the supporting seat, and a guide key is arranged on the inner hole wall of the supporting seat; the elastic retainer ring for the shaft is arranged in the annular groove; the transmission nut is arranged on the cylindrical thrust roller bearing, the transmission nut and the transmission lead screw form a trapezoidal thread pair, the outer peripheral wall of the top of the transmission nut is provided with a plurality of groups of blind holes, and the rotating arm is horizontally inserted into the blind holes in a matched manner; the sheath is arranged on the elastic retaining ring for the shaft, and the sheath is sleeved on the maximum circumferential wall of the transmission nut. The utility model discloses it is convenient to remove, and elevating speed is fast, and can the auto-lock.

Description

Portable jacking mechanism

Technical Field

The utility model relates to a climbing mechanism field specifically is a portable climbing mechanism.

Background

The traditional screw rod lifter has the transmission form of a worm gear and a screw rod nut, and the working principle shows that the corresponding displacement of the screw rod is the pitch divided by the reduction ratio of the worm gear and the worm when a worm shaft (input shaft) rotates for one circle, and the corresponding displacement is smaller than 1mm under the general condition because the speed ratio of the worm gear and the worm is larger. When the stroke is longer, the number of the rotation turns of the worm corresponding to the complete stroke of the screw rod is too large, and the working efficiency is extremely low for manual operation. In addition, the base plate of the traditional screw rod elevator is small and is unstable in independent support, and the traditional screw rod elevator needs to be fixed on a mounting surface with a hole by using a screw before being used. This is time and labor consuming for situations where it is inconvenient to drill mounting holes in the field and where the lift mechanism requires frequent station changes.

The hydraulic jack has the characteristics of flexibility and convenience, but has the problems of low positioning precision and poor self-locking property.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is to the problem that exists among the background art, provides a convenient to use, receives the place restriction less, does not need the on-the-spot dismantlement, and the fast and good portable climbing mechanism of auto-lock performance of elevating speed.

The technical scheme of the utility model: a portable jacking mechanism comprises a transmission screw rod, a rotating arm, a transmission nut, a sheath, an elastic retainer ring for a shaft, a supporting seat and a base;

the base comprises a flat plate and a barrel body vertically arranged on the flat plate, trundles are obliquely arranged on the flat plate upwards, a transmission screw rod is vertically arranged, a ball head is arranged at the top of the transmission screw rod, a ball head flange is rotatably arranged on the ball head, the bottom of the transmission screw rod is inserted into the barrel body, and a guide assembly for limiting the transmission screw rod to move along the vertical direction is arranged at the bottom of the transmission screw rod; the supporting seat is sleeved on the transmission screw rod and connected with the top of the barrel through a plurality of groups of inner hexagon screws b, a cylindrical thrust roller bearing is arranged at the top of the supporting seat, a guide key is vertically arranged on the inner hole wall of the supporting seat and is inserted into a guide groove vertically arranged on the transmission screw rod in a matched manner, an arc plate with one hundred and eighty degrees is arranged at the top of the supporting seat, and an arc groove is formed in the inner circumferential surface of the arc plate; an annular groove is formed in the outer peripheral wall of the top of the supporting seat, an elastic check ring for a shaft is arranged in the annular groove, and the diameter of the outer periphery of the elastic check ring for the shaft is larger than that of the outer periphery of the top of the supporting seat; the transmission nut is arranged on the cylindrical thrust roller bearing, the transmission nut is sleeved on the transmission lead screw, the transmission nut and the transmission lead screw form a trapezoidal thread pair, the bottom of the transmission nut is provided with an annular groove, the inner wall of the arc-shaped plate at the top of the supporting seat is provided with a section of bulge, the bulge is inserted into the annular groove in a matched manner, the outer peripheral wall of the top of the transmission nut is provided with a plurality of groups of blind holes, and the rotating arm is inserted into the blind holes in a horizontally matched manner; the sheath is arranged on the elastic retaining ring for the shaft, and the sheath is sleeved on the maximum circumferential wall of the transmission nut.

Preferably, the guide assembly comprises a guide seat, a POM guide ring and a square locking nut; the guide seat is arranged on a vertical optical axis at the bottom of the transmission screw rod, the guide seat is positioned in the cylinder body, the bottom of the transmission screw rod penetrates through the guide seat, the square locking nut is matched with threads arranged on the outer wall of the vertical optical axis, and the square locking nut is attached to the bottom of the guide seat; the POM guide ring is arranged on the outer peripheral wall of the guide seat, and the POM guide ring is attached to the inner wall of the cylinder body.

Preferably, the POM guide ring and the bottom of the transmission screw rod are in interference fit, and the interference magnitude is 0-0.02 mm; set up annular mounting groove on the guide holder periphery wall, the POM guide ring sets up on annular mounting groove cell wall.

Preferably, a through hole is horizontally formed in a vertical optical axis at the bottom of the transmission lead screw, and a through hole is formed in the wall of the bottom of the cylinder in the base.

Preferably, a plurality of groups of reinforcing rib plates are arranged between the flat plate of the base and the barrel.

Preferably, the guide key and the supporting seat are positioned through a cylindrical pin, and the guide key and the supporting seat are connected through a plurality of groups of socket head cap screws a.

Preferably, an oil chamber is formed between the sheath and the peripheral wall of the transmission nut, an oil nozzle for injecting lubricating oil into the oil chamber is arranged on the sheath, and the oil nozzle is also arranged on the cylinder wall in the base.

Preferably, the ball head is connected with the transmission screw through a set screw.

Compared with the prior art, the utility model discloses following profitable technological effect has:

1. the support area of the flat plate below the base is large, the stability is good, and the flat plate is not provided with a mounting hole, so that the flat plate is not required to be independently mounted during use. The head of the transmission screw is a ball flange, which can compensate the parallelism deviation of the upper and lower supporting surfaces, so that the mechanism is more convenient to use than a common screw rod lifter and has smaller limitation. The base is provided with the trundles, so that the transfer is convenient when the station is replaced, and the site disassembly is not needed.

2. The common screw rod lifter is provided with a worm and gear speed reducing mechanism, a worm is a driving part, the corresponding displacement of the screw rod after one rotation is divided by the worm and gear speed reducing ratio, so that under the condition of manual input, the mechanism is high in lifting speed and high in working efficiency.

3. The transmission screw is a single-head screw, can be self-locked under the condition of no serious impact and no vibration, and is incomparable with hydraulic equipment.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of a support base;

FIG. 4 is a schematic view of the drive nut;

fig. 5 is a schematic structural view of the ball flange.

Reference numerals are as follows: 1. a ball flange; 2. a drive screw; 3. a rotating arm; 4. a set screw; 5. a drive nut; 6. a sheath; 7. a circlip for the shaft; 8. a supporting seat; 9. a nozzle tip; 10. a cylindrical thrust roller bearing; 11. a cylindrical pin; 12. a socket head cap screw a; 13. a spring washer; 14. a guide key; 15. a socket head cap screw b; 16. a base; 17. a guide seat; 18. a POM guide ring; 19. a square lock nut; 20. and a caster.

Detailed Description

Example one

As shown in fig. 1-5, the portable jacking mechanism provided by the utility model comprises a transmission screw 2, a rotating arm 3, a transmission nut 5, a sheath 6, an elastic collar 7 for a shaft, a supporting seat 8 and a base 16;

the base 16 comprises a flat plate and a barrel vertically arranged on the flat plate, trundles 20 are obliquely arranged on the flat plate upwards, the transmission screw 2 is vertically arranged, a plurality of groups of reinforcing rib plates are arranged between the flat plate of the base 16 and the barrel, a ball head is arranged at the top of the transmission screw 2, a ball head flange 1 is rotatably arranged on the ball head, the ball head is connected with the transmission screw 2 through a set screw 4, the bottom of the transmission screw 2 is inserted into the barrel, and a guide assembly for limiting the transmission screw 2 to move along the vertical direction is arranged at the bottom of the transmission screw; the supporting seat 8 is sleeved on the transmission screw rod 2, the supporting seat 8 is connected with the top of the barrel through a plurality of groups of socket head cap screws b15, the top of the supporting seat 8 is provided with a cylindrical thrust roller bearing 10, the inner hole wall of the supporting seat 8 is vertically provided with a guide key 14, the guide key 14 is inserted into a guide groove vertically arranged on the transmission screw rod 2 in a matched manner, the top of the supporting seat 8 is provided with a one-hundred-eighty-degree arc-shaped plate, and the inner circumferential surface of the arc-shaped plate is provided with an arc-shaped groove; an annular groove is formed in the outer peripheral wall of the top of the supporting seat 8, the elastic check ring 7 for the shaft is arranged in the annular groove, and the diameter of the outer peripheral circle of the elastic check ring 7 for the shaft is larger than that of the outer peripheral circle of the top of the supporting seat 8; the transmission nut 5 is arranged on the cylindrical thrust roller bearing 10, the transmission nut 5 is sleeved on the transmission lead screw 2, the transmission nut 5 and the transmission lead screw 2 form a trapezoidal thread pair, an annular groove is formed in the bottom of the transmission nut 5, a section of bulge is arranged on the inner wall of an arc-shaped plate at the top of the supporting seat 8 and is inserted into the annular groove in a matched mode, a plurality of groups of blind holes are formed in the outer peripheral wall of the top of the transmission nut 5, the rotating arm 3 is inserted into the blind holes in a horizontally matched mode, and the rotating arm 3 and the blind holes are in interference fit; the sheath 6 is arranged on the elastic retainer ring 7 for the shaft, the sheath 6 is sleeved on the maximum circumferential wall of the transmission nut 5, an oil chamber is formed between the sheath 6 and the outer circumferential wall of the transmission nut 5, an oil nozzle 9 for injecting lubricating oil into the oil chamber is arranged on the sheath 6, and the oil nozzle 9 is also arranged on the cylinder wall in the base 16.

In this embodiment, the supporting area of the flat plate below the base 16 is large, the stability is good, and the flat plate is not provided with the mounting hole, so that the flat plate is not required to be separately mounted during use. The head of the transmission screw 2 is a ball flange 1, which can compensate the parallelism deviation of the upper and lower supporting surfaces, so the mechanism is more convenient to use than a common screw rod lifter and has smaller limitation. The base 16 is provided with the caster 20, so that the station can be conveniently replaced without being disassembled on site.

And no other speed-reducing transmission forms exist, the transmission nut 5 rotates for one circle and the displacement corresponding to the transmission screw rod 2 is a screw pitch, so the lifting speed is high, the common screw rod lifter is provided with a worm and gear speed reducing mechanism, the worm is a driving part, the screw rod rotates for one circle and the corresponding displacement is the screw pitch divided by the worm and gear speed reducing ratio, so the mechanism is high in lifting speed and high in working efficiency under the condition of manual input.

In addition, the transmission screw rod is a single-head screw rod, and can be self-locked under the condition of no serious impact and no vibration, which is incomparable to hydraulic equipment.

Example two

As shown in fig. 2, compared with the first embodiment, the portable jacking mechanism of the present invention includes a guide seat 17, a POM guide ring 18, and a square lock nut 19; the guide seat 17 is arranged on a vertical optical axis at the bottom of the transmission screw rod 2, the guide seat 17 is positioned in the cylinder, the bottom of the transmission screw rod 2 penetrates through the guide seat 17, the square locking nut 19 is matched with threads arranged on the outer wall of the vertical optical axis, and the square locking nut 19 is attached to the bottom of the guide seat 17; the POM guide ring 18 is provided on the outer peripheral wall of the guide holder 17, and the POM guide ring 18 is attached to the inner wall of the cylinder. The POM guide ring 18 and the bottom of the transmission screw rod 2 are in interference fit, and the interference magnitude is 0-0.02 mm; an annular mounting groove is formed in the outer peripheral wall of the guide seat 17, and the POM guide ring 18 is arranged on the wall of the annular mounting groove. A through hole is horizontally arranged on a vertical optical axis at the bottom of the transmission screw rod 2, and a through hole is arranged on the cylinder wall at the bottom of the cylinder in the base 16.

In this embodiment, the transmission lead screw 2 reciprocates the in-process, through POM guide ring 18 and the barrel inner wall in the base 16 in close contact with, plays the guide effect of vertical direction to transmission lead screw 2, makes transmission lead screw 2 remove more stably. The through hole is horizontally arranged on the vertical optical axis at the bottom of the transmission screw rod 2, and the through hole is arranged on the barrel wall at the bottom of the barrel in the base 16, so that the air pressures on the upper side and the lower side of the inner hole of the barrel in the base 16 are balanced when the transmission screw rod 2 moves up and down.

EXAMPLE III

As shown in fig. 2, the utility model provides a portable climbing mechanism compares in embodiment one, fixes a position through cylindric lock 11 between guide key 14 and the supporting seat 8, connects through multiunit allen key a12 between guide key 14 and the supporting seat 8.

In the embodiment, the cylindrical pin 11 is convenient for positioning and installing the guide key 14, the width of the guide groove formed in the transmission lead screw 2 is 10 threads greater than that of the guide key 14, the installation is simple and convenient, and the positioning precision is high.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A portable jacking mechanism is characterized by comprising a transmission screw rod (2), a rotating arm (3), a transmission nut (5), a sheath (6), an elastic retainer ring (7) for a shaft, a supporting seat (8) and a base (16);

the base (16) comprises a flat plate and a cylinder body vertically arranged on the flat plate, wherein trundles (20) are obliquely arranged on the flat plate upwards, the transmission screw (2) is vertically arranged, a ball head is arranged at the top of the transmission screw (2), a ball head flange (1) is rotatably arranged on the ball head, the bottom of the transmission screw (2) is inserted into the cylinder body, and a guide assembly for limiting the transmission screw (2) to move along the vertical direction is arranged at the bottom of the transmission screw; the supporting seat (8) is sleeved on the transmission lead screw (2), the supporting seat (8) is connected with the top of the barrel through a plurality of groups of inner hexagon screws b (15), a cylindrical thrust roller bearing (10) is arranged at the top of the supporting seat (8), a guide key (14) is vertically arranged on the inner hole wall of the supporting seat (8), the guide key (14) is inserted into a guide groove vertically arranged on the transmission lead screw (2) in a matched mode, an arc-shaped plate with one hundred and eighty degrees is arranged at the top of the supporting seat (8), and an arc-shaped groove is formed in the inner circumferential surface of the arc-shaped plate; an annular groove is formed in the outer peripheral wall of the top of the supporting seat (8), the elastic check ring (7) for the shaft is arranged in the annular groove, and the diameter of the outer circumference of the elastic check ring (7) for the shaft is larger than that of the outer circumference of the top of the supporting seat (8); the transmission nut (5) is arranged on the cylindrical thrust roller bearing (10), the transmission nut (5) is sleeved on the transmission lead screw (2), the transmission nut (5) and the transmission lead screw (2) form a trapezoidal thread pair, the bottom of the transmission nut (5) is provided with an annular groove, a section of bulge is arranged on the inner wall of an arc-shaped plate at the top of the supporting seat (8), the bulge is inserted into the annular groove in a matched mode, the outer peripheral wall of the top of the transmission nut (5) is provided with a plurality of groups of blind holes, and the rotating arm (3) is inserted into the blind holes in a horizontally matched mode; the sheath (6) is arranged on the elastic retainer ring (7) for the shaft, and the sheath (6) is sleeved on the maximum circumferential wall of the transmission nut (5).

2. The portable jacking mechanism according to claim 1, wherein the guide assembly comprises a guide holder (17), a POM guide ring (18) and a square lock nut (19); the guide seat (17) is arranged on a vertical optical axis at the bottom of the transmission screw rod (2), the guide seat (17) is positioned in the cylinder, the bottom of the transmission screw rod (2) penetrates through the guide seat (17), the square locking nut (19) is matched with threads arranged on the outer wall of the vertical optical axis, and the square locking nut (19) is attached to the bottom of the guide seat (17); the POM guide ring (18) is arranged on the outer peripheral wall of the guide seat (17), and the POM guide ring (18) is attached to the inner wall of the cylinder body.

3. The portable jacking mechanism according to claim 2, wherein the POM guide ring (18) is in interference fit with the bottom of the transmission screw rod (2), and the interference magnitude is 0-0.02 mm; an annular mounting groove is formed in the peripheral wall of the guide seat (17), and the POM guide ring (18) is arranged on the wall of the annular mounting groove.

4. The portable jacking mechanism according to claim 2, wherein a through hole is horizontally arranged on a vertical optical axis at the bottom of the transmission screw (2), and a through hole is arranged on the cylinder wall at the bottom of the cylinder in the base (16).

5. The portable jacking mechanism according to claim 1, wherein a plurality of sets of reinforcing ribs are provided between the plate of the base (16) and the barrel.

6. The portable jacking mechanism according to claim 1, wherein the guide key (14) and the support seat (8) are positioned by a cylindrical pin (11), and the guide key (14) and the support seat (8) are connected by a plurality of groups of socket head cap screws a (12).

7. The portable jacking mechanism according to claim 1, wherein an oil chamber is formed between the sheath (6) and the outer peripheral wall of the transmission nut (5), an oil nozzle (9) for injecting lubricating oil into the oil chamber is arranged on the sheath (6), and the oil nozzle (9) is also arranged on the wall of the cylinder in the base (16).

8. The portable jacking mechanism according to claim 1, wherein the ball head is connected with the driving screw (2) through a set screw (4).