CN112225104A

CN112225104A - Electric hoist with good anti-skid performance

Info

Publication number: CN112225104A
Application number: CN202011005821.6A
Authority: CN
Inventors: 刘应华
Original assignee: Individual
Current assignee: Shandong Fengsi Engineering Technology Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-01-15
Anticipated expiration: 2040-09-23
Also published as: CN112225104B

Abstract

The invention relates to the technical field of transportation auxiliary equipment, and discloses an electric hoist with good anti-skid performance. Through the setting of piston piece and clutch blocks, when this electric block need brake, the pneumatic cylinder extends, make both sides piston piece to the inboard removal under the transmission of connecting rod, hydraulic oil to hydraulic pressure intracavity portion drives the arc and also moves to the inboard and press from both sides tight fixed to the main shaft, because the clutch blocks is in vertical decurrent state all the time under the action of gravity, hydraulic oil can extrude the stopper with the clutch blocks ejecting this moment, stretch out downwards and replace the walking wheel and play support and braking action, the clutch blocks can replace the walking wheel, prevent the wearing and tearing of walking wheel, sliding friction can not take place for the protection walking wheel, reduce its friction loss, prolong its life.

Description

Electric hoist with good anti-skid performance

Technical Field

The invention relates to the technical field of transportation auxiliary equipment, in particular to an electric hoist with good anti-skid performance.

Background

The electric hoist is a special lifting equipment, is installed on overhead traveling crane, gantry crane, and the electric hoist has small, the dead weight is light, easy operation, characteristics such as convenient to use for places such as industrial and mining enterprises, storage, pier, its working method is through hanging the walking wheel on the I-steel guide rail, and the motor drives the walking wheel integrative with drive gear and walks on the I-steel to mention the heavy object under the effect that promotes hoisting equipment, transport a common engineering auxiliary equipment of carrying along the I-steel guide rail.

But often there will be some not enough in electric block actual operation: firstly, electric block working process often need load some great equipment of weight or goods, because electric block self quality is great, and the drive wheel presss from both sides tightly in I-shaped steel rail both sides all the time, and the drive wheel when electric block transportation quality is great equipment brakes, because adopt disc brake to have a braking time when braking, make the walking wheel take place the slip of certain distance relative to the I-shaped steel rail, this kind of slip very easily causes the wearing and tearing of walking wheel, in case the walking wheel wearing and tearing, the circular arc outer lane of walking wheel can wear into the plane, can cause electric block to break down in service, not only reduce traction force, and in case the drive wheel is polished into the plane by the arc surface with the I-shaped steel rail contact surface, can aggravate the wearing and tearing of walking wheel, reduce the life of walking wheel, increase later maintenance.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the electric hoist with good anti-skid performance, which has the advantages of difficult abrasion of the walking wheels and long service life and solves the problems provided by the background technology.

The invention provides the following technical scheme: an electric hoist with good anti-skid performance comprises a main shaft, wherein a driving gear is fixedly connected at the middle part of the main shaft, a travelling wheel is fixedly connected at one end of the main shaft, an installation block in the middle of the travelling wheel is movably sleeved at the outer side of the main shaft, a plurality of groups of balls which are arranged in an equal circumference way are movably sleeved at the two sides of the inner wall of the installation block, a hydraulic cavity is arranged in the installation block, piston blocks are movably sleeved at the two sides of the hydraulic cavity, a movable seat which is movably sleeved with the installation block is fixedly connected at one side of each piston block, a connecting rod is movably sleeved at one end of the movable seat, a fixed seat which is fixedly connected with the installation block is movably sleeved at the middle part of the connecting rod, a hydraulic cylinder is movably sleeved at the other end of the connecting rod, a reset spring is arranged around the outer side, the bottom activity in hydraulic pressure chamber has cup jointed the stopper, the bottom fixedly connected with clutch blocks of stopper.

Preferably, two groups of concave grooves matched with the balls are formed in the side face of the main shaft, the friction block is large in mass, and the friction block can be guaranteed to be in a vertical state all the time.

Preferably, the fastening device comprises grooves formed in two sides of the inner wall of the mounting block and a connecting block movably sleeved with the mounting block, an arc-shaped plate is fixedly connected to one end of the connecting block, a friction plate is fixedly connected to one side of the arc-shaped plate, the radius of the arc-shaped plate is identical to that of the main shaft, and the distance between the friction plate and the main shaft is smaller than the distance between the friction block and the I-shaped steel.

Preferably, when the return spring is in a natural state, the hydraulic cylinder is in an unextended state, and the distance between the piston blocks on the two sides is the largest.

Preferably, the outer edge of the friction block is provided with anti-skidding teeth, and the friction block is fixedly connected with the limiting block through a bolt.

The invention has the following beneficial effects:

1. through the setting of piston piece and clutch blocks, when this electric block need brake, the pneumatic cylinder extends, overcome reset spring's pulling force, make both sides piston piece to remove to the inboard under the transmission of connecting rod, hydraulic oil to hydraulic pressure intracavity portion drives the arc and also removes to the inboard and press from both sides tight fixedly to the main shaft, because the clutch blocks is in vertical decurrent state under the action of gravity all the time, hydraulic oil can extrude the stopper with the clutch blocks ejecting this moment, stretch out downwards and replace the walking wheel and play support and braking action, so when this electric block brakies and take place to slide, the clutch blocks can replace the walking wheel, prevent that the walking wheel from wearing and tearing, sliding friction can not take place for the protection walking wheel, reduce its friction loss, prolong its life.

2. Through the setting through ball and concave groove, not only can become rolling friction with main shaft and installation piece by sliding friction, can carry on spacingly to the installation piece moreover for the installation piece is in fixed position, can not contact with both sides walking wheel, causes unnecessary friction loss, guarantees the clutch blocks simultaneously and is in vertical state under self gravity condition always.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure A of the present invention;

fig. 3 is a side cross-sectional view of the inventive structure.

In the figure: 1. a main shaft; 2. a drive gear; 3. a traveling wheel; 4. mounting blocks; 5. a ball bearing; 6. a hydraulic chamber; 7. a piston block; 8. a movable seat; 9. a connecting rod; 10. a hydraulic cylinder; 11. a return spring; 12. a fixed seat; 13. a fastening device; 131. a groove; 132. connecting blocks; 133. an arc-shaped plate; 134. a friction plate; 14. a limiting block; 15. a friction block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an electric hoist with good anti-skid performance comprises a main shaft 1, a driving gear 2 fixedly connected to the middle of the main shaft 1, a traveling wheel 3 fixedly connected to one end of the main shaft 1, an installation block 4 movably sleeved on the outer side of the main shaft 1 and located in the middle of the traveling wheel 3, a plurality of sets of balls 5 arranged in an equal circumference manner movably sleeved on two sides of the inner wall of the installation block 4, a hydraulic chamber 6 formed inside the installation block 4, a piston block 7 movably sleeved on two sides of the hydraulic chamber 6, a movable seat 8 movably sleeved with the installation block 4 and fixed on one side of the piston block 7, a connecting rod 9 movably sleeved on one end of the movable seat 8, a fixed seat 12 fixedly connected with the installation block 4 and movably sleeved on the middle of the connecting rod 9, a hydraulic cylinder 10 movably sleeved on the other end of the connecting rod 9, a return spring 11 arranged around the outer side of the hydraulic cylinder 10, and a, the bottom activity in hydraulic pressure chamber 6 has cup jointed stopper 14, and stopper 14's bottom fixedly connected with clutch blocks 15.

Wherein, the side of main shaft 1 is seted up two sets of concave grooves with 5 looks adaptations of ball, and the quality of clutch blocks 15 is great, can guarantee that clutch blocks 15 is in vertical state all the time, through the setting of ball 5 and concave groove, not only can become rolling friction with main shaft 1 and installation piece 4 by sliding friction, can carry on spacingly to installation piece 4 in addition for installation piece 4 is in fixed position, can not contact with both sides walking wheel 3, causes unnecessary friction loss.

Wherein, the fastening device 13 comprises grooves 131 formed on both sides of the inner wall of the mounting block 4 and a connecting block 132 movably sleeved with the mounting block 4, one end of the connecting block 132 is fixedly connected with an arc plate 133, one side of the arc plate 133 is fixedly connected with a friction plate 134, the radius of the arc plate 133 is the same as that of the main shaft 1, and the distance from the friction plate 134 to the main shaft 1 is smaller than that from the friction block 15 to the i-steel, when the electric hoist needs to brake, the hydraulic cylinder 10 extends to overcome the pulling force of the return spring 11, the piston blocks 7 on both sides move inwards under the transmission of the connecting rod 9, the hydraulic oil in the hydraulic cavity 6 is extruded and drives the arc plate 133 to move inwards to clamp and fix the main shaft 1, because the friction block 15 is always in a vertical downward state under the action of gravity, the hydraulic oil can extrude the limiting block 14 to eject out the friction block 15, and extend downwards to replace the, at the moment, when the electric hoist is braked to slide, the friction block 15 can replace the walking wheels 3, so that the walking wheels 3 are prevented from being abraded, the walking wheels 3 are protected from sliding friction, the friction loss is reduced, and the service life is prolonged; when the hydraulic cylinder 10 is operated again, the return spring 11 is rebounded, the arc-shaped plate 133 and the friction block 15 are retracted, and the operation can be performed again.

When the return spring 11 is in a natural state, the hydraulic cylinder 10 is in a non-telescopic state, and the distance between the piston blocks 7 on the two sides is the largest, so that the piston blocks 7 can brake conveniently, and the ejection distance of the friction block 15 is ensured.

Wherein, the outer fringe of clutch blocks 15 is provided with anti-skidding tooth, and clutch blocks 15 passes through bolt and stopper 14 fixed connection, can increase frictional force through setting up anti-skidding tooth, realizes better braking, and through bolted connection clutch blocks 15 and stopper 14, the change after the clutch blocks 15 wearing and tearing of being convenient for does not need other more operations when changing moreover, and is simple and convenient.

According to the working principle, when the electric hoist needs to brake, the hydraulic cylinder 10 extends to overcome the tensile force of the return spring 11, the piston blocks 7 on the two sides move inwards under the transmission of the connecting rod 9, hydraulic oil in the hydraulic cavity 6 is extruded and simultaneously drives the arc-shaped plate 133 to move inwards to clamp and fix the spindle 1, the friction block 15 is always in a vertical and downward state under the action of gravity, the hydraulic oil can extrude the limiting block 14 to eject the friction block 15 out and extend downwards to replace the walking wheels 3 to play a supporting and braking role, and when the electric hoist is braked and slides, the friction block 15 can replace the walking wheels 3 to prevent the walking wheels 3 from being worn, so that the walking wheels 3 are protected from sliding friction, the friction loss is reduced, and the service life of the electric hoist is prolonged; when the hydraulic cylinder 10 is operated again, the return spring 11 is rebounded, the arc-shaped plate 133 and the friction block 15 are retracted, and the operation can be performed again.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electric block that skid resistance can be good, includes main shaft (1), the middle part fixedly connected with drive gear (2) of main shaft (1), the one end fixedly connected with walking wheel (3) of main shaft (1), its characterized in that: the outer side of the main shaft (1) is movably sleeved with an installation block (4) in the middle of the traveling wheel (3), a plurality of groups of balls (5) which are arranged in a uniform circumference manner are movably sleeved on two sides of the inner wall of the installation block (4), a hydraulic cavity (6) is formed in the installation block (4), piston blocks (7) are movably sleeved on two sides of the hydraulic cavity (6), a movable seat (8) which is movably sleeved with the installation block (4) is fixedly connected to one side of each piston block (7), a connecting rod (9) is movably sleeved at one end of each movable seat (8), a fixed seat (12) which is fixedly connected with the installation block (4) is movably sleeved at the middle of each connecting rod (9), a hydraulic cylinder (10) is movably sleeved at the other end of each connecting rod (9), a reset spring (11) is arranged around the outer side of each hydraulic cylinder (10), and a fastening device (13) is fixedly connected to the other side of each piston block (, the bottom of the hydraulic cavity (6) is movably sleeved with a limiting block (14), and the bottom of the limiting block (14) is fixedly connected with a friction block (15).

2. The electric hoist with good anti-skid performance according to claim 1, characterized in that: two sets of concave grooves matched with the balls (5) are formed in the side face of the main shaft (1), the friction block (15) is large in mass, and the friction block (15) can be guaranteed to be always in a vertical state.

3. The electric hoist with good anti-skid performance according to claim 1, characterized in that: fastener (13) are including seting up recess (131) in installation piece (4) inner wall both sides and connecting block (132) that cup joints with installation piece (4) activity, one end fixedly connected with arc (133) of connecting block (132), one side fixedly connected with friction disc (134) of arc (133), the radius of arc (133) is the same with main shaft (1), and friction disc (134) apart from the distance of main shaft (1) be less than the distance of clutch blocks (15) apart from the I-steel.

4. The electric hoist with good anti-skid performance according to claim 1, characterized in that: when the return spring (11) is in a natural state, the hydraulic cylinder (10) is in a non-telescopic state, and the distance between the piston blocks (7) on the two sides is the largest.

5. The electric hoist with good anti-skid performance according to claim 1, characterized in that: the outer edge of the friction block (15) is provided with anti-skidding teeth, and the friction block (15) is fixedly connected with the limiting block (14) through bolts.