Anti-toppling ball screw lifting mechanism

Abstract

The utility model discloses an anti-toppling ball screw lifting mechanism which comprises a bottom frame, a jacking frame is arranged above the bottom frame, a fork arm is connected above the jacking frame, a jacking machine assembly and four sets of lifting maintenance screw assemblies are installed on the bottom frame, and the lifting maintenance screw assemblies are connected with the fork arm. Four sets of T-rail guide assemblies and four sets of guide shaft assemblies are connected between the bottom frame and the jacking frame. Two sets of protection mechanisms are designed, one is a guide shaft assembly, the other is a T rail guide set, the guide shaft assembly is composed of a guide shaft sleeve, an oil-free lining, an end cover and a guide shaft, and the guide shaft sleeve is mainly used as a mounting piece of the oil-free lining; the T-shaped rail guide assembly is mainly composed of a T-shaped guide rail, a mounting plate and a guide wheel. When the jacking frame is subjected to unbalance loading, torsion can be transferred to a guide shaft and the T-shaped guide rail.

Description

TECHNICAL FIELD

[0001] The utility model relates to jacking device technical field especially relates to prevent the ball screw lifting mechanism of toppling. BACKGROUND

[0002] The treatment and carrying of material in modern industrial production have realized high automation. On the automatic production conveying line, due to the limited space, the material is too large to meet the eccentric load requirement of the mechanism. The existing jacking mechanism cannot meet the eccentric load requirement. UTILITY MODEL CONTENTS

[0003] The utility model discloses a prevent the ball screw lifting mechanism of toppling to solve the shortcoming in prior art.

[0004] In order to realize the above-mentioned purpose, the utility model discloses a prevent the ball screw lifting mechanism of toppling, including the bottom frame, the top of bottom frame is provided with the jacking frame, the top of jacking frame is connected with the fork arm, the bottom frame is installed with jacking machine assembly and four groups of lifting maintenance screw rod assembly, the bottom frame is connected with four groups of T rail guide component and four groups of guide shaft component between jacking frame.

[0005] As a further description of the above technical solution:

[0006] The T rail guide component includes the T-shaped guide rail fixedly connected on the lower surface of the jacking frame, the mounting plate is fixedly connected on the bottom frame, the two guide wheels are movably connected on the side wall of the mounting plate, and the guide wheels are in rolling contact with the T-shaped guide rail.

[0007] As a further description of the above technical solution:

[0008] The guide shaft assembly includes the guide shaft sleeve fixedly connected on the bottom frame, the guide shaft is movably arranged in the guide shaft sleeve, the oilless bushing is arranged between the guide shaft sleeve and the guide shaft, the end cover is fixedly connected on the bottom of the guide shaft sleeve, the guide shaft penetrates the end cover, and the top end of the guide shaft is fixedly connected with the jacking frame.

[0009] As a further description of the above technical solution:

[0010] The jacking machine assembly includes four ball screw elevators, the four ball screw elevators are fixedly connected on the bottom frame, the four ball screw elevators are two by two, and the two ball screw elevators in each group are drivingly connected through the transmission shaft, the servo motor is fixedly connected on the bottom frame, the output shaft of the servo motor is drivingly connected with the speed reducer, and the speed reducer is drivingly connected with the two corresponding ball screw elevators through the two transmission shafts.

[0011] As a further description of the above technical solution:

[0012] The four ball screw elevators are connected with buffer rubber plates.

[0013] As a further description of the above technical solution:

[0014] The lifting maintenance screw rod assembly comprises a fixing seat fixedly connected to the bottom frame, a mounting seat fixedly connected to the upper surface of the fixing seat, a connecting screw rod threadedly connected through the surface of the mounting seat, a top plate fixedly connected to the top end of the connecting screw rod, a hand wheel fixedly connected to the bottom end of the connecting screw rod, a mounting bracket fixedly connected to the upper surface of the fixing seat, and a proximity photoelectric sensor fixedly connected to the mounting bracket.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] 1. Compared with the prior art, the anti-toppling ball screw lifting mechanism has two sets of protection mechanisms, one being a guide shaft assembly and the other being a T-rail guide assembly. The guide shaft assembly is composed of a guide shaft sleeve, an oil-free bushing, an end cover and a guide shaft. The guide shaft sleeve mainly serves as a mounting piece for the oil-free bushing. The T-rail guide assembly is mainly composed of a T-shaped guide rail, a mounting plate and a guide wheel. When the jacking frame is subjected to an eccentric load, the torsion can be transferred to the guide shaft and the T-shaped guide rail.

[0017] 2. Compared with the prior art, when the lifting maintenance screw rod assembly is not in use, the proximity photoelectric sensor and the top part are in an inductive state. If they are not in an inductive state, it indicates that the connecting screw rod is in an upward position. At this time, the PLC will send a signal to disconnect the jacking assembly. When the machine needs to be maintained, the lifting maintenance screw rod assembly around the machine is manually raised to the highest point by the hand wheel until it contacts the jacking frame, so as to prevent the jacking frame from falling when a person enters the inside of the machine for maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective view of the anti-toppling ball screw lifting mechanism is provided in the utility model.

[0019] Figure 2 A front view of the anti-toppling ball screw lifting mechanism is provided in the utility model.

[0020] Figure 3 A bottom frame schematic view of the anti-toppling ball screw lifting mechanism is provided in the utility model.

[0021] Figure 4 A T-rail guide assembly schematic view of the anti-toppling ball screw lifting mechanism is provided in the utility model.

[0022] Figure 5 A guide shaft assembly schematic view of the anti-toppling ball screw lifting mechanism is provided in the utility model.

[0023] Figure 6 The utility model provides a lifting maintenance screw rod assembly schematic view of anti -toppling ball screw lifting mechanism.

[0024] Legend:

[0025] 1, fork arm; 2, jacking frame; 3, bottom frame; 4, T rail guide assembly; 5, guide shaft assembly; 6, jacking machine assembly; 7, lifting maintenance screw rod assembly; 41, T-shaped guide rail; 42, mounting plate; 43, guide wheel; 51, guide shaft sleeve; 52, guide shaft; 53, end cover; 61, ball screw elevator; 62, transmission rod; 63, servo motor; 64, speed reducer; 65, buffer rubber plate; 71, fixed seat; 72, mounting seat; 73, connecting screw; 74, top plate; 75, hand wheel; 76, mounting bracket; 77, proximity photoelectric sensor. Specific embodiments

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] Reference Figures 1 to 6 The anti-toppling ball screw lifting mechanism provided by the utility model: including bottom frame 3, the top of bottom frame 3 is provided with jacking frame 2, jacking frame 2 is connected with fork arm 1 in the top, and four groups of lifting maintenance screw rod assemblies 7 and jacking machine assembly 6 are installed on bottom frame 1, jacking machine assembly 6 includes four ball screw elevators 61, four ball screw elevators 61 are all fixedly connected on bottom frame 3, four ball screw elevators 61 are in two groups, and two ball screw elevators 61 in each group are drivenly connected by transmission shaft 62, servo motor 63 is fixedly connected on bottom frame 3, the output shaft of servo motor 63 is drivenly connected with speed reducer 64, speed reducer 64 is drivenly connected with two corresponding ball screw elevators 61 through two transmission shafts 62, and buffer rubber plate 65 is connected on four ball screw elevators 61.

[0028] Lifting maintenance screw rod assembly 7 includes fixed seat 71 fixedly connected on bottom frame 3, mounting seat 72 is fixedly connected on the upper surface of fixed seat 71, connecting screw 73 is screwed through the surface of mounting seat 72, top plate 74 is fixedly connected on the top end of connecting screw 73, hand wheel 75 is fixedly connected on the bottom end of connecting screw 73, mounting bracket 76 is fixedly connected on the upper surface of fixed seat 71, and proximity photoelectric sensor 77 is fixedly connected on mounting bracket 76.

[0029] The four groups of T-rail guiding assemblies 4 and the four groups of guiding shaft assemblies 5 are connected between the bottom frame 3 and the jacking frame 2, the T-rail guiding assembly 4 comprises a T-shaped rail 41 fixedly connected to the lower surface of the jacking frame 2, the mounting plate 42 is fixedly connected to the bottom frame 3, the two guiding wheels 43 are movably connected to the side wall of the mounting plate 42, the guiding wheels 43 are in rolling contact with the T-shaped rail 41, the guiding shaft assembly 5 comprises a guiding shaft sleeve 51 fixedly connected to the bottom frame 3, the guiding shaft 52 is movably arranged in the guiding shaft sleeve 51, the oil-free bushing is arranged between the guiding shaft sleeve 51 and the guiding shaft 52, the end cover 53 is fixedly connected to the bottom of the guiding shaft sleeve 51, the guiding shaft 52 penetrates through the end cover 53, and the top end of the guiding shaft 52 is fixedly connected to the jacking frame 2.

[0030] Working principle:

[0031] When the goods need to be inserted and taken, the goods are run to the specified position by the conveying line, and the PLC gives a signal to the fork arm 1, the fork arm 1 is stretched into the tray fork opening of the conveying line;

[0032] The servo motor 63 in the jacking assembly 6 operates, at this time, the four surrounding transmission shafts 62 operate simultaneously under the connection of the shaft couplings, so as to drive the ball screw elevator 61 to rise and fall, when the jacking assembly 6 rises, the tray is separated from the conveying line;

[0033] The fork arm 1 is retracted to take the product from the conveying line (the fork arm can be bidirectionally retracted, and is electric);

[0034] When the goods need to be placed, the fork arm 1 is retracted to the specified position, the servo motor 63 in the jacking assembly 6 operates to drive the ball screw elevator 61 to descend, when the tray is lowered on the conveying line, the ball screw elevator 61 continues to descend to make the fork arm 1 separate from the tray; the fork arm 1 is retracted to above the ball screw elevator 61, and the above is one complete insertion and taking cycle;

[0035] When the fork arm 1 inserts and places the goods, the whole lifting mechanism is in a partial load state, if there is no protection design, the ball screw elevator as the power source may be twisted off due to the partial load torsion of the goods, the scheme has two sets of protection mechanisms, one is the guiding shaft assembly 5, and the other is the T-rail guiding assembly 4, the guiding shaft assembly 5 is composed of the guiding shaft sleeve 51, the oil-free bushing, the end cover 53 and the guiding shaft 52, the guiding shaft sleeve 51 is mainly used as a mounting piece of the oil-free bushing; the oil-free bushing (composed of brass and special solid lubricating material built-in); the guiding shaft 52 has a straightness requirement of ±0.02mm after S45C quenching and tempering treatment; the T-rail guiding assembly 4 is mainly composed of the T-shaped rail 41, the mounting plate 42 and the guiding wheel 43, when the jacking frame 2 is in a partial load state, the torsion can be transferred to the guiding shaft 52 and the T-shaped rail 41;

[0036] The lifting maintenance screw rod assembly 7 is composed of a fixing base 71, a mounting base 72, a connecting screw rod 73, a top plate 74, a hand wheel 75, a mounting bracket 76, and a proximity photoelectric sensor 77. When the lifting maintenance screw rod assembly 7 is not used, the proximity photoelectric sensor 77 and the top plate are in an inductive state. If they are not inductive, it indicates that the connecting screw rod 73 is in the rising position. At this time, the PLC will give a disconnection signal to the jacking assembly 6. When the machine needs to be maintained, the lifting maintenance screw rod assembly 7 around the machine is manually lifted to the highest point by the hand wheel 75 until it contacts the jacking frame 2, so as to prevent the jacking frame 2 from falling when a person enters the inside of the machine for maintenance.

[0037] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. Anti-toppling ball screw lifting mechanism, comprising a base frame (3), characterized in that: The bottom frame (3) is provided with a jacking frame (2), the jacking frame (2) is connected with a fork arm (1), the bottom frame (3) is provided with a jacking assembly (6) and four groups of lifting maintenance lead screw assemblies (7), and the bottom frame (3) and the jacking frame (2) are connected with four groups of T-shaped rail guide assemblies (4) and four groups of guide shaft assemblies (5).

2. The anti-tip ball screw lift mechanism of claim 1, wherein: The T-shaped rail guide assembly (4) comprises a T-shaped rail (41) fixedly connected to the lower surface of the jacking frame (2), and the bottom frame (3) is fixedly connected with a mounting plate (42), and two guide wheels (43) are movably connected to the side wall of the mounting plate (42), and the guide wheels (43) are in rolling contact with the T-shaped rail (41).

3. The tip-pour preventing ball screw lift mechanism of claim 1, wherein: The guide shaft assembly (5) comprises a guide shaft sleeve (51) fixedly connected to the bottom frame (3), a guide shaft (52) movably arranged in the guide shaft sleeve (51), an oil-free bushing arranged between the guide shaft sleeve (51) and the guide shaft (52), and an end cover (53) fixedly connected to the bottom of the guide shaft sleeve (51), wherein the guide shaft (52) penetrates through the end cover (53), and the top end of the guide shaft (52) is fixedly connected with the jacking frame (2).

4. The tip-pour preventing ball screw lift mechanism of claim 1, wherein: The jacking assembly (6) comprises four ball screw elevators (61), and the four ball screw elevators (61) are fixedly connected to the bottom frame (3), two ball screw elevators (61) in each group are drivingly connected through a transmission shaft (62), a servo motor (63) is fixedly connected to the bottom frame (3), an output shaft of the servo motor (63) is drivingly connected with a speed reducer (64), and the speed reducer (64) is drivingly connected with two corresponding ball screw elevators (61) through two transmission shafts (62).

5. The tip-pour preventing ball screw lift mechanism of claim 4, wherein: The four ball screw elevators (61) are connected with buffer rubber plates (65).

6. The tip-pour preventing ball screw lift mechanism of claim 1, wherein: The lifting maintenance lead screw assembly (7) comprises a fixed seat (71) fixedly connected to the bottom frame (3), a mounting seat (72) fixedly connected to the upper surface of the fixed seat (71), a connecting lead screw (73) threadedly penetrating through the surface of the mounting seat (72), a top plate (74) fixedly connected to the top end of the connecting lead screw (73), a hand wheel (75) fixedly connected to the bottom end of the connecting lead screw (73), a mounting bracket (76) fixedly connected to the upper surface of the fixed seat (71), and a proximity photoelectric sensor (77) fixedly connected to the mounting bracket (76).

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