阅读说明：本技术 一种电机下置式重载提升机的链条自张紧装置 (Chain self-tensioning device of motor underneath type heavy-load elevator ) 是由 张政鸿 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种电机下置式重载提升机的链条自张紧装置。上链轮和下链轮之间布置有自张紧装置,上链轮、自张紧装置和下链轮之间通过链条连接形成链传动连接,链条上间隔均布固定有多个料斗；两个固定板之间具有间隔形成水平滑道,水平滑道内布置有两个滑块、两个推杆和弹簧,两个滑块位于水平滑道的两端,两个滑块之间布置有一个弹簧,两个滑块分别通过各自的一个推杆和弹簧的两端相连接,两个滑块分别和左张紧轮及右张紧轮自身中心的轮轴上铰接。本发明通过料斗载荷的变化实现自动张紧,保证了链条和链轮的可靠啮合,将电机下置后产生的链条松弛问题限制在一定的范围内,从而提高了链条链轮的使用寿命,保障了提升机运行的稳定性和可靠性。(The invention discloses a self-tensioning device for a chain of a motor underneath type heavy-load elevator. A self-tensioning device is arranged between the upper chain wheel and the lower chain wheel, the upper chain wheel, the self-tensioning device and the lower chain wheel are connected through a chain to form chain transmission connection, and a plurality of hoppers are uniformly distributed and fixed on the chain at intervals; the two sliding blocks are arranged at two ends of the horizontal slide way, one spring is arranged between the two sliding blocks, the two sliding blocks are respectively connected with two ends of the spring through one respective push rod, and the two sliding blocks are respectively hinged with wheel shafts at the centers of the left tensioning wheel and the right tensioning wheel. The automatic tensioning device realizes automatic tensioning through the change of the load of the hopper, ensures the reliable meshing of the chain and the chain wheel, and limits the problem of chain looseness generated after the motor is arranged in a certain range, thereby prolonging the service life of the chain and the chain wheel and ensuring the stability and the reliability of the operation of the elevator.)

1. The utility model provides a put under motor formula heavy load lifting machine's chain from overspeed device tensioner which characterized in that: comprises a hopper (1), a chain (2), an upper chain wheel (3), a self-tensioning device (4) and a lower chain wheel (5); the upper chain wheel (3) is positioned right above the lower chain wheel (5), a self-tensioning device (4) is arranged between the upper chain wheel (3) and the lower chain wheel (5), the upper chain wheel (3), the self-tensioning device (4) and the lower chain wheel (5) are connected through a chain (2) to form chain transmission connection, and a plurality of hoppers (1) are uniformly distributed and fixed on the chain (2) at intervals;

the self-tensioning device (4) comprises two tensioning parts, two upper fixed wheels (4-1) and two lower fixed wheels (4-5), wherein the two tensioning parts are arranged in the middle of the self-tensioning device (4), the two upper fixed wheels (4-1) are arranged right above the two tensioning parts, and the two lower fixed wheels (4-5) are arranged right below the two tensioning parts; each tensioning part comprises two fixing plates (4-2), two sliding blocks (4-3), a left tensioning wheel (4-4), a right tensioning wheel (4-6), two push rods (4-7) and a spring (4-8); the two fixing plates (4-2) are respectively arranged at intervals up and down horizontally, a horizontal slide way is formed between the two fixing plates (4-2) at intervals, two sliding blocks (4-3), two push rods (4-7) and springs (4-8) are arranged in the horizontal slide way, the two sliding blocks (4-3) are located at two ends of the horizontal slide way, one spring (4-8) is arranged between the two sliding blocks (4-3), the two sliding blocks (4-3) are respectively connected with two ends of the spring (4-8) through one push rod (4-7) respectively, and the two sliding blocks (4-3) are respectively hinged to wheel shafts at the centers of the left tensioning wheel (4-4) and the right tensioning wheel (4-6).

2. The self-tensioning device for the chain of the motor-driven heavy-duty hoisting machine as claimed in claim 1, wherein: the two tensioning parts of the self-tensioning device (4) are symmetrically and horizontally arranged on two sides of the chain (2), a space is reserved between the two tensioning parts, the chain (2) passes through the space between the two tensioning parts, and a left tensioning wheel (4-4) and a right tensioning wheel (4-6) of the tensioning parts are meshed with the chain (2) in the space between the tensioning parts.

3. The self-tensioning device for the chain of the motor-driven heavy-duty hoisting machine as claimed in claim 1, wherein: the chain (2) is in chain transmission connection with the upper side of the upper chain wheel (3) and the lower side of the lower chain wheel (5) and is closed, the upward advancing side of the chain (2) is a lifting side of the chain (2), and the downward advancing side of the chain (2) is a return side of the chain (2); the lifting edge of the chain wheel (3) winds through the left tension wheel (4-4) in an S-shaped mode, and winds through the upper fixed wheel (4-1) and the lower fixed wheel (4-5) on the corresponding side of the left tension wheel (4-4), the return edge of the chain wheel (3) winds through the right tension wheel (4-6) in an S-shaped mode, and winds through the upper fixed wheel (4-1) and the lower fixed wheel (4-5) on the corresponding side of the right tension wheel (4-6); all the upper fixed wheels (4-1) and the lower fixed wheels (4-5) are positioned at the inner side of the chain (2), and all the left tensioning wheels (4-4) and the right tensioning wheels (4-6) are positioned at the outer side of the chain (2).

4. The self-tensioning device for the chain of the motor-driven heavy-duty hoisting machine as claimed in claim 1, wherein: still include permanent-magnet machine (6) and fuselage (7), permanent-magnet machine (6) fix in fuselage (7) bottom and lug connection lower sprocket (5), fixed plate (4-2) pass through bolted connection on fuselage (7).

Technical Field

The invention relates to a self-tensioning device, in particular to a chain self-tensioning device of a motor underneath type heavy-load elevator.

Background

A hoist is a mechanical device that can continuously transport material in a vertical direction. The conveyor is widely applied to the conveying work of materials such as mineral aggregate, cement clinker, gypsum and the like. The driving device of the existing elevator is usually arranged on the upper side of the elevator body, so that the installation and maintenance difficulty is high. However, after the motor is placed downwards, when the hopper is filled with materials, the chain on one side of the feeding hole can be loosened under the action of the gravity of the hopper, the number of teeth meshed with the chain on the chain wheel is reduced, and the difficulty of driving the chain by the chain wheel is increased; especially, under the condition of heavy load of the hoister, the chain wheel is stressed and concentrated on the rest small number of gear teeth, so that the problems of breakage, excessive abrasion, chain dropping and the like are easily caused, and the running stability and safety of the hoister are seriously influenced.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides a chain self-tensioning device of a motor underneath type heavy-load elevator. The meshing degree of increase feed inlet department chain and sprocket limits the loose problem restriction of the chain that produces behind the motor lower in certain within range to the meshing driven stationarity of sprocket and chain under the assurance improves the life of chain sprocket.

The technical scheme adopted by the invention is as follows:

the invention comprises a hopper, a chain, an upper chain wheel, a self-tensioning device and a lower chain wheel; the upper chain wheel is positioned in the same vertical plane right above the lower chain wheel, the sizes of the upper chain wheel and the lower chain wheel are the same, a self-tensioning device is arranged between the upper chain wheel and the lower chain wheel, the upper chain wheel, the self-tensioning device and the lower chain wheel are connected through a chain to form chain transmission connection, and a plurality of hoppers are uniformly distributed and fixed on the chain at intervals;

the self-tensioning device comprises two tensioning parts, two upper fixed wheels and two lower fixed wheels, wherein the two tensioning parts are arranged in the middle of the self-tensioning device, the two upper fixed wheels are arranged right above the two tensioning parts through self central wheel shafts, the two lower fixed wheels are arranged right below the two tensioning parts through self central wheel shafts, all the upper fixed wheels and the lower fixed wheels are positioned on the same vertical plane, the upper fixed wheels and the lower fixed wheels are the same in size and smaller in diameter than the upper chain wheels and the lower chain wheels, and the positions of the chain are limited to a certain extent through the upper fixed wheels and the lower fixed wheels, so that the chain is in a proper position when working; each tensioning part comprises two fixing plates, two sliding blocks, a left tensioning wheel, a right tensioning wheel, two push rods and a spring; two fixed plates are arranged horizontally at intervals from top to bottom respectively, an interval is arranged between the two fixed plates to form a horizontal slide way, two sliders, two push rods and a spring are arranged in the horizontal slide way, the two sliders are located at two ends of the horizontal slide way and can only horizontally slide in the horizontal slide way, the spring is arranged between the two sliders, the two sliders are connected with two ends of the spring through respective push rods respectively, the two sliders are hinged to wheel shafts at the centers of a left tensioning wheel and a right tensioning wheel respectively, and the left tensioning wheel and the right tensioning wheel are the same in size and smaller in diameter than an upper chain wheel and a lower chain wheel.

The two tensioning parts of the self-tensioning device are symmetrically and horizontally arranged on two sides of the chain, a space is reserved between the two tensioning parts, the chain passes through the space between the two tensioning parts, and a left tensioning wheel and a right tensioning wheel of the tensioning parts are meshed with the chain in the space between the two tensioning parts.

The chain is in chain transmission connection with the upper side of the upper chain wheel and the lower side of the lower chain wheel and is closed, the upward advancing side of the chain is a lifting side of the chain, and the downward advancing side of the chain is a return side of the chain; the lifting edge of the chain wheel passes through the left tension wheel in an S-shaped mode, and passes through the upper fixed wheel and the lower fixed wheel on the side corresponding to the left tension wheel, and the return edge of the chain wheel passes through the right tension wheel in an S-shaped mode, and passes through the upper fixed wheel and the lower fixed wheel on the side corresponding to the right tension wheel; all last fixed pulleys and lower fixed pulleys all are located the inboard of chain, and all left take-up pulley and right take-up pulley all are located the outside of chain.

The permanent magnet motor is fixed at the bottom of the machine body and is directly connected with the lower chain wheel, the permanent magnet motor is used as a power source of the elevator, a speed reducer is not arranged, and the fixing plate is connected to the machine body through bolts.

Compared with the prior art, the invention has the beneficial effects that:

the permanent magnet motor is arranged below the motor, so that the motor is convenient to install and maintain, and the motor is clean, efficient and speed-adjustable and uses the permanent magnet motor to provide power; the automatic tensioning is realized by utilizing the weight of the hopper, the service life of the chain and the chain wheel is prolonged, and the running stability and safety of the hoister are ensured.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2-a is a front view of the inventive self-tensioning apparatus;

fig. 2-b is a side view of the self-tensioning device of the present invention.

In the figure: 1. the automatic tensioning device comprises a hopper, 2, a chain, 3, an upper chain wheel, 4, an automatic tensioning device, 4-1, an upper fixed wheel, 4-2, a fixed plate, 4-3, a sliding block, 4-4, a left tensioning wheel, 4-5, a lower fixed wheel, 4-6, a right tensioning wheel, 4-7, a push rod, 4-8, a spring, 5, a lower chain wheel, 6, a permanent magnet motor, 7 and a machine body.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the present invention comprises a hopper 1, a chain 2, an upper sprocket 3, a self-tensioning device 4 and a lower sprocket 5; the upper chain wheel 3 is positioned in the same vertical plane right above the lower chain wheel 5, the upper chain wheel 3 and the lower chain wheel 5 are the same in size, a self-tensioning device 4 is arranged between the upper chain wheel 3 and the lower chain wheel 5, the upper chain wheel 3, the self-tensioning device 4 and the lower chain wheel 5 are connected through a chain 2 to form chain transmission connection, and a plurality of hoppers 1 are uniformly distributed and fixed on the chain 2 at intervals; the elevator is characterized by further comprising a permanent magnet motor 6 and an elevator body 7, wherein the permanent magnet motor 6 is fixed at the bottom of the elevator body 7 and is directly connected with a lower chain wheel 5, the permanent magnet motor is used as a power source of the elevator and is not provided with a speed reducer, and the fixing plate 4-2 is connected to the elevator body 7 through a bolt.

As shown in fig. 2-a and 2-b, the self-tensioning device 4 comprises two tensioning portions, two upper fixed pulleys 4-1 and two lower fixed pulleys 4-5, the two tensioning portions are arranged in the middle of the self-tensioning device 4, the two tensioning portions are symmetrically and horizontally arranged on two sides of the chain 2, a space is left between the two tensioning portions, the chain 2 passes through the space between the two tensioning portions, and a left tensioning pulley 4-4 and a right tensioning pulley 4-6 of the tensioning portions are meshed with the chain 2 in the space between the tensioning portions;

the two upper fixed wheels 4-1 are arranged right above the two tensioning parts through self central wheel shafts, the two lower fixed wheels 4-5 are arranged right below the two tensioning parts through self central wheel shafts, all the upper fixed wheels 4-1 and the lower fixed wheels 4-5 are positioned on the same vertical plane, the sizes are the same, the diameters of the upper fixed wheels 4-1 and the lower fixed wheels 4-5 are smaller than those of the upper chain wheel 3 and the lower chain wheel 5, the position of the chain 2 is limited to a certain extent through the upper fixed wheels 4-1 and the lower fixed wheels 4-5, and the chain 2 is ensured to be in a proper position when working; each tensioning part comprises two fixing plates 4-2, two sliding blocks 4-3, a left tensioning wheel 4-4, a right tensioning wheel 4-6, two push rods 4-7 and a spring 4-8; the two fixed plates 4-2 are respectively arranged at intervals up and down horizontally, a horizontal slideway is formed between the two fixed plates 4-2 at intervals, two sliding blocks 4-3 are arranged in the horizontal slideway, the two sliders 4-3 are respectively connected with two ends of the spring 4-8 through the push rod 4-7, the two sliders 4-3 are respectively hinged with wheel shafts at the centers of the left tensioning wheel 4-4 and the right tensioning wheel 4-6, the left tensioning wheel 4-4 and the right tensioning wheel 4-6 are identical in size, and the diameters of the left tensioning wheel 4-4 and the right tensioning wheel 4-6 are smaller than those of the upper chain wheel 3 and the lower chain wheel 5; the chain 2 is in chain transmission connection with the upper side of the upper chain wheel 3 and the lower side of the lower chain wheel 5 and is closed, the upward advancing side of the chain 2 is a lifting side of the chain 2, and the downward advancing side of the chain 2 is a return side of the chain 2; the lifting edge of the chain wheel 3 is wound around the left tension wheel 4-4 in an S-shaped mode, and is wound around the upper fixed wheel 4-1 and the lower fixed wheel 4-5 on the corresponding side of the left tension wheel 4-4, the return edge of the chain wheel 3 is wound around the right tension wheel 4-6 in an S-shaped mode, and is wound around the upper fixed wheel 4-1 and the lower fixed wheel 4-5 on the corresponding side of the right tension wheel 4-6; all the upper fixed pulley 4-1 and the lower fixed pulley 4-5 are positioned at the inner side of the chain 2, and all the left tension pulley 4-4 and the right tension pulley 4-6 are positioned at the outer side of the chain 2.

The working mechanism of the self-tensioning device is as follows:

in actual work, two sliding blocks 4-3 are always positioned in a horizontal slide way between two fixing plates 4-2 in motion, a permanent magnet motor 6 drives a chain 2 to advance through a self central wheel shaft of a lower chain wheel 5, simultaneously drives an upper chain wheel 3, an upper fixing wheel 4-1 and a lower fixing wheel 4-5 to rotate around the self central wheel shaft, drives a left tensioning wheel 4-4 and a right tensioning wheel 4-6 to rotate around the self central wheel shaft, drives a hopper 1 to move when the chain 2 advances, and the opening of the hopper 1 faces the advancing direction of the chain 2; the hopper 1 is driven to move along with the advance of the chain 2, when the hopper 1 moves below the lower chain wheel 5, materials are loaded and then move to the lift edge of the chain 2, the hopper 1 moves to the return edge of the chain 2 through the upper part of the upper chain wheel 3, and the materials are emptied through a discharge hole of the elevator, which is close to the return edge of the chain 2, so that the weight of the hopper 1 on the lift edge of the chain 2 is larger than that of the hopper 1 on the return edge of the chain 2; when the hopper 1 passes through the left tension pulley 4-4, the hopper 1 generates a downward oblique force on the chain 2, the lift range of the chain 2 is tightened towards the return range direction, so that the return range of the chain 2 tends to stretch to drive the right tension pulley 4-6 to slide rightwards, the right tension pulley 4-6 pulls the left tension pulley 4-4 to slide rightwards through the push rod 4-7 and the spring 4-8, and the left tension pulley 4-4 compresses the lift range of the chain 2 to enable the lift range to be tightly attached to the lower chain wheel 5, so that the chain 2 is tightened, and the meshing condition of the chain 2 and the lower chain wheel 5 is improved.

The permanent magnet motor used in the invention is arranged below the base, so that the installation and maintenance are convenient, the permanent magnet motor is used for providing power, and the speed can be adjusted in a clean and efficient manner; automatic tensioning is realized through the change of hopper load, the reliable meshing of chain and sprocket has been guaranteed, the chain lax problem restriction that produces behind the motor setting in certain within range to improve the life of chain sprocket, ensured lifting machine stability and reliability of operation.