CN210457333U - Lifting mechanism - Google Patents

Abstract

The utility model discloses a lifting mechanism, including the frame, the motor is installed to the frame upper end, and the motor both sides are equipped with first limit post respectively and second limit post is installed perpendicularly in the frame upper end, are equipped with the crossbeam between first limit post and the second limit post, and first limit post is equipped with the guide rail with second limit post inboard, and the crossbeam top is equipped with the fixed block, and the fixed block both sides are equipped with the slider respectively and connect on the guide rail, and the fixed block upper end is installed and is controlled the lifting frame that link up, is equipped with the lead screw in the lifting frame and connects in interior top, and the lead screw lower extreme is connected with the motor of. Set up the crossbeam between first side post and the second side post, make the device keep steady in lift process, through set up the guide rail in first side post and second side post inboard, when the motor rotates, make the lead screw can drive the slider at fixed block both ends and remove on the slide rail to realize the up-and-down motion of the frame that lifts of fixed block upper end, this device, simple structure, convenient operation, possess automatic rising's advantage.

Description

Lifting mechanism

Technical Field

The utility model belongs to the technical field of jacking equipment, concretely relates to lifting mechanism.

Background

Lifting mechanisms are used as a basic operating mechanism and are widely used in many industries, such as warehousing, logistics, manufacturing, docks, airports, and the like.

In the industrial field, many mechanical products must maintain a high position during use, and often require lowering of the height and center of gravity during transportation or standby. In order to realize frequent change of the high and low postures, a lifting device is required, but in order to improve reliability and structural simplicity, a manual mode is adopted by many devices, and great strength is brought to operation.

Disclosure of Invention

An object of the utility model is to provide a lifting mechanism possesses simple structure, automatic rising, goes up and down steadily, automatic speed governing, still has the spacing advantage of lift simultaneously.

The utility model discloses a realize that the technical scheme who takes of above-mentioned purpose does: the utility model provides a lifting mechanism, which comprises a frame, the motor is installed to the frame upper end, the motor both sides are equipped with first limit post respectively and are installed in the frame upper end perpendicularly with second limit post, be equipped with the crossbeam between first limit post and the second limit post, first limit post is equipped with the guide rail with second limit post inboard, the crossbeam top is equipped with the fixed block, the fixed block both sides are equipped with the slider respectively and connect on the guide rail, the frame that lifts that link up about the fixed block upper end is installed, it connects in interior top to be equipped with the lead screw in the frame to lift, the lead screw lower extreme is connected with the motor.

Preferably, a speed reducer is further arranged between the motor and the screw rod, and the speed reducer is communicated with the lower end of the screw rod through a coupler.

Preferably, the upper end and the lower end of the guide rail are respectively provided with a microswitch which is fixedly connected to the inner side of the first side column through a fixing frame, and a top block which is matched with the microswitch is arranged on the sliding block close to the first side column.

Preferably, two beams horizontally arranged from front to back are connected between the first side column and the second side column, a bearing seat is fixedly mounted between the two beams, a bearing is arranged in the bearing seat, and the surface of the screw rod is sleeved with the bearing through an embedded shaft sleeve.

Preferably, a screw rod nut is arranged in the fixing block and sleeved on the screw rod, and a nut fixing seat is further arranged between the screw rod nut and the fixing block.

Preferably, a connecting shaft horizontally arranged in the front and back is connected between the first side column and the second side column, the connecting shaft is connected to the upper end of the guide rail, at least two rolling bearings are sleeved on each connecting shaft, and the outer surfaces of the rolling bearings are tangent to the inner surface of the lifting frame.

Preferably, the inner surface of the lifting frame is also provided with a rubber layer.

Preferably, one end of the motor is arranged at the upper end of the machine base through a motor bracket.

Compared with the prior art, the beneficial effects of the utility model are that: 1) the speed reducer is arranged, so that the rotating speed can be automatically adjusted, and the lifting speed of the device can be controlled; 2) the micro switches arranged at the upper end and the lower end of the guide rail respectively can automatically control the device to lift, so that the use safety of the device is improved; 3) the outer surface of the movable bearing is arranged to be tangent to the inner surface of the lifting frame, so that the lifting frame is smoother and more stable under the action of the rolling bearing in the lifting process, and meanwhile, the position of the lifting frame is limited in the lifting process, and the lifting frame is prevented from shaking due to gravity center change in the lifting process; 4) the device has the advantages of simple structure, automatic lifting, stable lifting, automatic speed regulation and lifting limit.

Drawings

FIG. 1 is a schematic structural view of the apparatus;

fig. 2 is a cross-sectional view a-a of fig. 1.

Description of reference numerals: 1, coupling; 2, a microswitch; 17 fixing a frame; 18 a top block; 25 rolling bearings; 251 a bearing; 26 a stand; 27 a motor bracket; 28 a first side post; 29 a second side post; 30 cross beams; 31 a bearing seat; 32 shaft sleeves; 33, a screw rod; 34 a nut fixing seat; 35 a rubber layer; 36 fixed blocks; 37 lifting the frame; 38 connecting the shafts; 41 a speed reducer; 43 a feed screw nut; a motor 44; 45 sliding blocks; 46 guide rail.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, a lifting mechanism comprises a base 26, a motor 44 is mounted at the upper end of the base 26, a first side column 28 and a second side column 29 are respectively arranged at two sides of the motor 44 and are vertically mounted at the upper end of the base 26, a cross beam 30 is arranged between the first side column 28 and the second side column 29, guide rails 46 are arranged at the inner sides of the first side column 28 and the second side column 29, a fixed block 36 is arranged above the cross beam 30, sliders 45 are respectively arranged at two sides of the fixed block 36 and are connected to the guide rails 46, a left-right through lifting frame 37 is mounted at the upper end of the fixed block 36, a screw 33 connected to the inner top is arranged in the lifting frame 37, and the lower end of the. Set up the crossbeam between first side post and the second side post, make the device keep steady in lift process, through set up the guide rail in first side post and second side post inboard, when the motor rotates, make the lead screw can drive the slider at fixed block both ends and remove on the slide rail to realize the up-and-down motion of the frame that lifts of fixed block upper end, this device, simple structure, convenient operation, possess automatic rising's advantage.

A speed reducer 41 is also arranged between the motor 44 and the screw rod 33, and the speed reducer 41 is communicated with the lower end of the screw rod 33 through a coupling 1. A speed reducer is arranged between the motor and the screw rod and used for automatically adjusting the rotating speed and controlling the lifting speed of the device.

The upper end and the lower end of the guide rail 46 are respectively provided with a microswitch 2 which is fixedly connected to the inner side of the first side column 28 through a fixed frame, and a top block 18 which is matched with the microswitch 2 is arranged on the slide block 45 close to the first side column 28. The upper end and the lower end of the guide rail are respectively provided with the micro switch for limiting the up-down lifting stroke of the lifting frame, and when the jacking block touches the micro switch in the lifting process, the lifting process is automatically stopped, so that the use safety of the device is improved.

Two beams 30 horizontally arranged front and back are connected between the first side column 28 and the second side column 29, a bearing seat 31 is fixedly installed between the two beams 30, a bearing 251 is arranged in the bearing seat 31, and the surface of the screw rod 33 is sleeved with the bearing 251 through an embedded shaft sleeve 32. A bearing seat is fixedly arranged between the two crossbeams, a bearing is arranged in the bearing seat, the bearing is sleeved on the surface of the screw rod through an embedded shaft sleeve, the shaking of the lower end part of the screw rod in work can be reduced, the stability of the device in the lifting process is increased,

a screw nut 43 is arranged in the fixing block 36 and sleeved on the screw 33, and a nut fixing seat 34 is also arranged between the screw nut 43 and the fixing block 36. The screw rod nut is arranged in the fixed block and sleeved on the screw rod, and the nut fixed seat is arranged between the screw rod nut and the fixed block, so that the forward and reverse rotation of the screw rod is converted into the lifting motion of the fixed block for pushing the sliding blocks at the two ends.

Connecting shafts 38 horizontally arranged back and forth are connected between the first side column 28 and the second side column 29, the connecting shafts 38 are connected to the upper ends of the guide rails 46, at least two rolling bearings 25 are sleeved on each connecting shaft 38, and the outer surfaces of the rolling bearings 25 are tangent to the inner surface of the lifting frame 37. The outer surface of the movable bearing is tangent to the inner surface of the lifting frame, so that the lifting frame is smoother and more stable under the action of the rolling bearing in the lifting process, and meanwhile, the position of the lifting frame is limited in the lifting process, and the lifting frame is prevented from shaking due to gravity center change when lifted.

The inner surface of the lifting frame 37 is also provided with a rubber layer 35. The surface abrasion of the lifting frame can be reduced.

One end of the motor 44 is mounted on the upper end of the base 26 through the motor bracket 27. The installation of the motor is stabilized.

Example 2

The utility model relates to a lifting mechanism's theory of operation does: the starter motor 44 operates through the reducer 41

The rotating speed of the screw 33 is controlled, under the action of the rotating force of the screw 33, the fixed block 36 fixedly connected with the screw through the screw nut 43 drives the sliding block 45 to move on the guide rail 46, so that the lifting frame 37 moves up and down, and the outer surface of the rolling bearing 25 is tangent to the inner surface of the lifting frame 37, so that the rolling bearing 25 rotates when the lifting frame 37 moves up and down, the lifting stability of the lifting frame 37 is improved, and when the top block 18 on the sliding block 45 is driven to touch the micro switch 2 in the lifting process of the lifting frame 37, the device stops operating.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (7)

1. The utility model provides a lifting mechanism, includes frame (26), and motor (44) are installed to frame (26) upper end, and motor (44) both sides are equipped with first limit post (28) respectively and second limit post (29) and install perpendicularly in frame (26) upper end, are equipped with crossbeam (30), its characterized in that between first limit post (28) and second limit post (29): first limit post (28) and second limit post (29) inboard are equipped with guide rail (46), crossbeam (30) top is equipped with fixed block (36), fixed block (36) both sides are equipped with slider (45) respectively and connect on guide rail (46), the frame (37) that lifts that link up about fixed block (36) upper end is installed, it connects in interior top to be equipped with lead screw (33) in frame (37) to lift, lead screw (33) lower extreme is connected with motor (44) of crossbeam (30) below.

2. A lifting mechanism according to claim 1, characterized in that a speed reducer (41) is arranged between the motor (44) and the screw rod (33), and the speed reducer (41) is communicated with the lower end of the screw rod (33) through a coupling (1).

3. A lifting mechanism according to claim 1, characterized in that the upper and lower ends of the guide rail (46) are respectively provided with a microswitch (2) which is fixedly connected to the inner side of the first side column (28) through a fixed mount, and a top block (18) which is matched with the microswitch (2) is arranged on the slide block (45) near the first side column (28).

4. The lifting mechanism is characterized in that two beams (30) horizontally arranged from front to back are connected between the first side column (28) and the second side column (29), a bearing seat (31) is fixedly installed between the two beams (30), a bearing (251) is arranged in the bearing seat (31), and the bearing (251) is sleeved on the surface of the screw rod (33) through an embedded shaft sleeve (32).

5. The lifting mechanism as claimed in claim 1, wherein a lead screw nut (43) is provided in the fixing block (36) and sleeved on the lead screw (33), and a nut fixing seat (34) is provided between the lead screw nut (43) and the fixing block (36).

6. A lifting mechanism according to claim 1, characterized in that a connecting shaft (38) horizontally arranged back and forth is connected between the first side column (28) and the second side column (29), the connecting shaft (38) is connected to the upper end of the guide rail (46), at least two rolling bearings (25) are sleeved on each connecting shaft (38), and the outer surfaces of the rolling bearings (25) are tangent to the inner surface of the lifting frame (37).

7. A lifting mechanism according to claim 1, characterised in that the inner surface of the lifting frame (37) is provided with a rubber layer (35).

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