CN111392339A - Lifting components of multi-stage conveying equipment - Google Patents

Abstract

The multi-section conveying equipment lifting assembly adopts the three-connecting-rod type screw rod transmission mechanism to correspondingly improve the lifting accuracy and the suspension positioning at any height position, effectively improve the stability and the synchronism of the whole-process power transmission and reduce the manual intervention and the labor load. The belt conveyor lifting assembly comprises a lead screw connecting rod transmission device which is arranged on the support and used for supporting the machine body to lift; the machine body consists of three-section conveying lines which are sequentially connected along the conveying direction, and comprises a first supporting plate, a second supporting plate and a third supporting plate which are used for bearing a belt to convey goods; the lead screw connecting rod transmission device comprises a trapezoidal lead screw which is driven and connected by a lifting speed reducing motor, and a lead screw nut which is connected through threads is sleeved on the trapezoidal lead screw; a driving shaft is vertically arranged on the trapezoidal screw rod and is connected to the screw rod nut, and the driving shaft is formed by welding a cylinder body and shaft heads positioned at two ends of the cylinder body; the shaft head of the driving shaft is connected with a supporting connecting rod for supporting the whole machine body to lift.

Description

Lifting components of multi-stage conveying equipment

technical field

The invention relates to a lift assembly which is applied to a multi-stage conveying device and realizes lifting and conveying goods according to vertical drop, and belongs to the technical field of logistics and warehousing.

Background technique

In the existing e-commerce and logistics express industries, the warehousing and sorting operation sites usually use lifting conveyor belts according to the vertical drop, so as to improve the operation efficiency of the goods transportation site and reduce the labor load of personnel.

At present, the commonly used climbing belt conveyors generally use a hydraulic transmission structure for lifting and lowering. Therefore, the power system components have disadvantages such as heavy weight, high cost, and inconvenient maintenance and movement.

For example, the following Chinese patent application published earlier, the application number is CN201720489709.1, is called a belt lifting device and a substrate glass grinding system. The lifting device includes a belt conveyor, a support mechanism for supporting the belt conveyor, and a lifting device for lifting and lowering the belt conveyor. The lifting mechanism of the support mechanism includes a link assembly for lifting and lowering the support mechanism and a driving member for driving the link assembly. The connecting rod assembly includes a connecting rod, a rotating shaft with a fixed axis position, and a bottom plate connected with the supporting mechanism, the bottom surface of the bottom plate is provided with a pin seat, the rotating shaft is parallel to the bottom plate, and the connecting rods are arranged in pairs , the pairs of the connecting rods are respectively nested at both ends of the rotating shaft and are respectively connected to the pin bases through the pin shafts, so that the connecting rods, the rotating shaft and the bottom plate form a parallel four-bar linkage mechanism, The driving member drives the connecting rod.

The above-mentioned existing lifting belt conveyor still has the following technical deficiencies: 1. The lifting mechanism is still bulky and noisy during operation; 2. The lifting end cannot always maintain a horizontal conveying state, and lacks a driving force in the horizontal direction. It still relies on manual dragging during transportation, which is time-consuming and labor-intensive; 3. The operation accuracy of the lifting mechanism needs to be improved, and it is difficult to achieve positioning at any position along the vertical direction.

In view of this, the following application proposal is proposed.

SUMMARY OF THE INVENTION

The multi-section conveying equipment lifting assembly of the present invention is to solve the above problems existing in the prior art and adopts a transmission mechanism with a simple structure, easy control and light weight, so as to improve the lifting accuracy and the suspension at any height position. Positioning, effectively improve the stability and synchronization of the whole power transmission, reduce manual intervention and labor load.

In order to achieve the above-mentioned design purpose, the belt conveyor lifting assembly described in this application includes a lead screw link transmission device arranged on the bracket and used to support the lifting and lowering of the fuselage;

The fuselage is composed of three-section conveying lines connected in sequence along the conveying direction, including pallet 1, pallet 2 and pallet 3 for carrying belts to convey goods;

The lead screw connecting rod transmission device includes a trapezoidal lead screw driven and connected by a lifting and decelerating motor, and a lead screw nut connected by a thread is sleeved on the trapezoidal lead screw; perpendicular to the trapezoidal lead screw, on the lead screw nut. A drive shaft is installed and connected on the upper part, and the drive shaft is welded by the cylinder body and the shaft heads located at both ends of the cylinder body;

A support link for supporting the lifting of the whole body is connected at the head of the drive shaft; a second support seat is connected between the support link and the second support plate, and the top of the support seat of the second support plate is welded with the second support plate. The bottom ends of the two support bases of the pallet are hinged with the support link through a pin shaft.

Further, in the lead screw connecting rod transmission device, a set of bearing seats and tapered roller bearings are sleeved on the trapezoidal lead screw.

Further, in the screw connecting rod transmission device, bolted rollers are installed on the shaft heads at both ends of the drive shaft.

Further, in the screw connecting rod transmission device, a roller spacer sleeve is sleeved between the shaft head of the drive shaft and the roller, and a support rod copper sleeve is sleeved between the support rod and the shaft head of the drive shaft.

Further, in the described screw link transmission device, the top end of the first section of the support link and the second support base of the pallet are hinged through the pin shaft; one end of the support arm and the second section of the support link are hinged at the hinge point. Hinged, the other end of the support arm is hinged with the three supporting bases of the supporting plate; the top end of the three supporting bases of the supporting plate is welded with the supporting plate three.

To sum up, the belt conveyor lifting assembly described in this application has the following advantages and beneficial effects:

1. The accuracy and smoothness of the reciprocating sliding of the lifting component are improved in a targeted manner, there is no jamming in the whole process, and the service life of the lifting component can be improved.

2. The power source for the lift of the fuselage is the way of the geared motor driving the screw. The three-link structure ensures that the front-end conveyor line is always in a horizontal state, which is conducive to the vertical upward or downward conveying of goods without manual intervention and dragging. Minimize labor and correspondingly increase the efficiency of conveying operations.

Description of drawings

The present application will now be further described with reference to the following figures.

FIG. 1 is a schematic structural diagram of a belt conveyor using the lifting assembly described in the present application in a raised and horizontal state;

Fig. 2 is a schematic diagram of a screw rod transmission device;

Figure 3 is a schematic cross-sectional view of a part of the screw drive structure;

In the above drawings, the bracket 1, the screw rod transmission device 2, the fuselage 3, the guardrail 4, the guard chain cover 6, the caster 7, the front wheel folding support caster 8;

Lifting reduction motor 2-1, roller chain coupling 2-2, lock nut 2-3, tapered roller bearing 2-4, bearing seat 2-5, trapezoidal lead screw 2-6, lead screw nut 2- 7. Drive shaft 2-8, support rod copper sleeve 2-9, roller spacer 2-10, roller 2-11, vertical bearing with seat 2-12, support rod 2-13, pin 2-14, The second support seat of the pallet is 2-15, the support arm is 2-16, and the third support seat of the pallet is 2-17; the pallet one is 3-3, the pallet two is 3-14, and the pallet three is 3-15.

Detailed ways

Embodiment 1, as shown in Figure 1, the belt conveyor using the lifting assembly described in the present application is suitable for conveying goods between two vertical positions with a height difference between each other, which can realize the application of the device along the vertical direction. It can be transported upwards or vertically downwards.

This embodiment exemplifies the arrangement and usage of the related structures for upward transportation.

Specifically, the slope conveying belt conveyor includes a bracket 1 for supporting the whole device and functioning as a moving base, and a lead screw link transmission device 2 for supporting the lifting of the fuselage provided on the bracket 1 , Multi-section fuselage 3 for conveying goods, guardrail 4, guard chain cover 6, casters 7 and front-end folding support casters 8.

Among them, the fuselage 3 is composed of three-segment belt conveyors connected in sequence along the conveying direction, and the goods are placed on its three-segment pallets (respectively pallet one 3-3, pallet two 3-14 and pallet three 3-15). ) is realized between two vertical positions with a height difference, and is conveyed by the belt carried on the pallet;

The belt conveyor lifting assembly mainly includes a screw rod connecting rod transmission device 2, and the screw rod connecting rod transmission device 2 is used to realize the vertical transmission and support of the lifting power of the fuselage 3;

The front-end folding supporting caster 8 realizes the folding function of the outrigger through the extension and contraction of the nitrogen gas spring connected to it, so as to further improve the force balance of the rear end of the fuselage 3 when it is raised.

As shown in FIG. 2 and FIG. 3 , the screw transmission device 2 is a three-in-one mechanism of power, transmission and support for the lifting and lowering of the fuselage 3, and it includes a trapezoidal screw that is driven and connected by the lifting and decelerating motor 2-1. 2-6, the output power of the lift motor 2-1 is transmitted to the lead screw 2-6 through the roller chain coupling 2-2, and the lead screw 2-6 is sleeved with a screw nut 2 connected by a thread -7; When the elevating deceleration motor 2-1 drives the trapezoidal lead screw 2-6 to rotate clockwise or counterclockwise, the lead screw nut 2-7 moves horizontally back and forth;

In order to maintain the stability of the power transmission of the lead screw 2-6, a set of bearing seats 2-5 and tapered roller bearings 2-4 are set on the lead screw 2-6. The tapered roller bearings 2-4 can withstand more Heavy axial and radial load support.

A drive shaft 2-8 is installed and connected to the lead screw nut 2-7 perpendicular to the trapezoidal lead screw 2-6. The drive shaft 2-8 and the lead screw nut 2-7 are bolted and welded to the drive shaft 2-8. The upper and lower sides of the splint are connected, so that the whole can move back and forth with the lead screw nut 2-7.

The drive shaft 2-8 is used to transmit the transmission force of the trapezoidal screw 2-6 to the fuselage 3, and is an intermediate transmission component to realize the lifting movement of the fuselage 3. The end of the shaft head is welded.

In order to ensure the smooth performance of the front and rear running of the drive shaft 2-8, bolted rollers 2-11 are installed on the shaft heads at both ends of the drive shaft 2-8. The rollers 2-11 slide back and forth on the track formed at the base of the bracket 1 to achieve The overall smooth movement of the drive shafts 2-8.

A support link 2-13 is connected to the shaft head of the drive shaft 2-8 to support the lifting and lowering of the entire fuselage 3. With the reciprocating sliding of the drive shaft 2-8, the support link 2-13 is used to drive the shaft of the shaft 2-8. The head is a fulcrum, which can be turned over and vertically support the lifting action of the fuselage 3 .

In order to prevent the roller 2-11 and the supporting link 2-13 from moving, the roller is stuck due to their approaching each other, the roller spacer 2 is set between the shaft head of the drive shaft 2-8 and the roller 2-11. -10.

In order to increase the lubricity of the rotation of the support link 2-13 and the drive shaft 2-8, a support rod copper sleeve 2-9 is sleeved between the two.

A second support base 2-15 is connected between the support link 2-13 and the second support plate 3-14, and the top of the second support base 2-15 is welded with the second support plate 3-14. The bottom ends of the two support bases 2-15 are hinged with the support link 2-13 through the pin shaft 2-14. When the supporting link 2-13 rotates, the supporting base 2-15 of the second pallet drives the second pallet 3-14 to rotate and lift vertically.

Specifically, in the two-segment structure of the support link 2-13, the top of the first segment 2-131 is hinged with the second support base 2-15 of the pallet through the pin 2-14; one end of the support arm 2-16 is connected to the support The second section 2-132 of the rod 2-13 is hinged at the hinge point 2-141, and the other end of the support arm 2-16 is hinged with the three support bases 2-17 of the pallet; The top end is welded with the pallet 3-15.

The application of the above-mentioned specially designed support link 2-13 structure can effectively drive the lifting action of the support arm 2-16, and drive the third pallet 3-15 through the pallet three support base 2-17 to keep the horizontal state during the lifting process. .

The above-mentioned lead screw transmission device 2 is integrally arranged below the body 3, making full use of the idle space below the body 3 to make the entire structure of the belt conveyor more compact, light and convenient to move.

As above, the drive shaft 2-8, the support link 2-13, and the support plate 2 3-14 form a three-link mechanism. The support link 2-13 and the drive shaft 2-8 are hinged through the support rod copper sleeve 2-9. When the drive shaft 2-8 moves left and right on the lead screw 2-6, the support link 2-13 moves left and right with the drive shaft 2-8 and rotates around it. The supporting link 2-13 is hinged with the supporting base 2-15 of the supporting plate 2 fixed on the supporting plate 2 3-14 through the pin shaft. When the supporting link 2-13 rotates, the supporting plate 2 3-14 will follow the rotation axis of the supporting link 2-13. turn.

To sum up, the embodiments given in conjunction with the accompanying drawings are only preferred solutions. For those skilled in the art, it can be enlightened accordingly, and other alternative structures that conform to the design concept of the present invention can be directly deduced, which should also belong to the solution scope of the present invention.

Claims (5)

1. A multi-stage conveying equipment lifting assembly, characterized in that: comprising a lead screw link transmission device arranged on a bracket for supporting the lifting of the body; The fuselage is composed of three-section conveying lines connected in sequence along the conveying direction, including pallet 1, pallet 2 and pallet 3 for carrying the conveying line to convey goods; The lead screw connecting rod transmission device comprises a trapezoidal lead screw driven and connected by a lifting and deceleration motor, and a lead screw nut connected by a thread is sleeved on the trapezoidal lead screw; A drive shaft is installed and connected on the lead screw nut perpendicular to the trapezoidal lead screw, and the drive shaft is welded by the cylinder body and the shaft heads located at both ends of the cylinder body; A support link for supporting the lifting of the entire fuselage is connected at the head of the drive shaft; A second support seat is connected between the support link and the second support plate, the top of the second support seat is welded with the second support plate, and the bottom end of the second support seat is hinged with the support link through a pin shaft. 2 . The lifting assembly of multi-section conveying equipment according to claim 1 , wherein the lead screw connecting rod transmission device is sleeved with a set of bearing seats and tapered roller bearings on the trapezoidal lead screw. 3 . 3 . The lifting assembly of multi-stage conveying equipment according to claim 2 , wherein the screw rod connecting rod transmission device is provided with rollers connected with bolts on the shaft heads at both ends of the drive shaft. 4 . 4. The lifting assembly of multi-stage conveying equipment according to claim 3, characterized in that: in the screw connecting rod transmission device, the roller spacer sleeve is sleeved between the shaft head of the drive shaft and the roller, and the roller spacer sleeve is set between the shaft head of the drive shaft and the roller. A support rod copper sleeve is sleeved between the rod and the shaft head of the drive shaft. 5. The multi-stage conveying equipment lifting assembly according to any one of claims 1 to 4, characterized in that: in the screw connecting rod transmission device, the top of the first section of the support rod passes through the second support seat of the pallet The pin is hinged; one end of the support arm and the second section of the support link are hinged at the hinge point, and the other end of the support arm is hinged with the three support bases of the pallet; Weld.

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