CN212292612U

CN212292612U - Pneumatic hoist

Info

Publication number: CN212292612U
Application number: CN202020918744.2U
Authority: CN
Inventors: 姚春伟; 高亚伟; 陈亚磊; 李干; 张涛; 朱敬凯; 张俊顶; 武治国
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-05
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a pneumatic hoist, which comprises a pneumatic motor, a gear box, a lifting hook, a fixed disc and a gear cover; the two fixed disks are fixedly connected through fixed pins, the bottom of the lifting hook is fixedly connected with an installation block, a cross column is inserted into a side round hole of the installation block, two ends of the cross column are respectively connected with side fixing holes at the tops of the two fixed disks, the installation holes in the middle parts of the two fixed disks are rotatably connected with two ends of a main hoisting chain wheel, and a rotating shaft is rotatably connected in a through hole penetrating through the middle part of the main hoisting chain wheel; the pneumatic hoist crane reduces the labor intensity of operators, can be easily operated by only one person, reduces the labor cost, has low operation cost, only needs compressed air, can be matched with the compressed air of the compressed air pipeline arranged underground, does not need extra accessories, meets the basic requirement of frequently changing the use place, provides space for saving expenses and reducing consumption, and improves the working efficiency.

Description

Pneumatic hoist

Technical Field

The utility model relates to a lifting means technical field specifically is pneumatic hoist crane.

Background

At present, the most main portable hoisting tool under a mine and on the ground is a chain block, commonly called a chain block, and generally has two specifications of 3 tons and 5 tons. The hand-pulling chain block usually needs several persons to operate simultaneously when lifting heavy objects, and meanwhile, in order to amplify torque, the transmission ratio is large, and the working efficiency is low.

When the electric power, the hydraulic power and the like are adopted as power sources, the electric power needs a power supply and an explosion-proof device, the hydraulic power needs a hydraulic pump station, a power supply and the like, and the basic requirements that the use place of the hoisting device is changed frequently are not met. Aiming at the characteristic that most of underground roadways are provided with compressed air pipelines, the scheme designs the pneumatic hoist crane according to local conditions.

Disclosure of Invention

The to-be-solved technical problem of the utility model is overcome current defect, a pneumatic hoist block is provided, reduce operator's intensity of labour, only need alone can easily operate, the cost of labor has been reduced, the running cost is low, only need compressed air can, can cooperate the compressed air who uses the forced draft pipeline of laying in the pit, do not need extra too many annexes, satisfy the basic requirement of frequent change use place, for the festival branch consumption reduction provides the space, the work efficiency is improved, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the pneumatic hoist comprises a pneumatic motor, a gear box, a lifting hook, a fixed disc and a gear cover;

the two fixed disks are fixedly connected through fixed pins, the bottom of the lifting hook is fixedly connected with an installation block, a cross column is inserted into a side round hole of the installation block, two ends of the cross column are respectively connected with side fixing holes at the tops of the two fixed disks, the installation holes in the middle parts of the two fixed disks are rotatably connected with two ends of a main hoisting chain wheel, and a rotating shaft is rotatably connected in a through hole penetrating through the middle part of the main hoisting chain wheel;

the gear box is installed in the outside of one of them fixed disk, and the gear cover is installed in the outside of another fixed disk, install one-level gear reduction mechanism in the gear box, and the gear box is kept away from one side of lifting hook and is passed through bolt fixedly connected with pneumatic motor, and the output shaft of pneumatic motor is located the one end transmission of gear box through one-level gear reduction mechanism and pivot and is connected, install second grade gear reduction mechanism and tertiary gear reduction mechanism respectively through the gear mounting bracket in the gear cover, the one end that the pivot is located the gear cover loops through second grade gear reduction mechanism and tertiary gear reduction mechanism and is connected with the end drive of main hoisting sprocket, and the part winding that main hoisting sprocket is located between two fixed disks has hoisting chain.

Pneumatic hoist hangs up through the lifting hook, and two fixed disks are connected through installation piece and spreader to two fixed disks pass through the fixed basic framework that forms of fixed round pin post, and the hoisting article are bound to the winding jack-up chain in main hoisting sprocket side, and pneumatic motor's power passes through one-level gear reduction mechanism, secondary gear reduction mechanism and tertiary gear reduction mechanism and gives main hoisting sprocket with power transmission, and main hoisting sprocket's rotation can be through the hoisting article of chain hoisting.

Further, one-level gear reduction unit includes one-level reduction driven gear and one-level reduction driving gear, the output shaft of pnematic motor extends to in the gear box and is connected with one-level reduction driving gear, one-level reduction driven gear installs the one end that the pivot is located the gear box, and one-level reduction driven gear is connected with one-level reduction driving gear meshing. An output shaft of the pneumatic motor drives a first-stage reduction driven gear to rotate through a first-stage reduction driving gear, and drives a rotating shaft to rotate through a first-stage reduction driven gear.

Further, second grade gear reduction unit includes second grade speed reduction driving gear and two second grade speed reduction driven gear, the one end that the pivot is located the gear cover is installed to the second grade speed reduction driving gear, and two second grade speed reduction driven gear are located the both sides of second grade speed reduction driving gear and are connected with second grade speed reduction driving gear meshing respectively, and two second grade speed reduction driven gear rotate to be connected on gear mounting bracket. The rotation of the rotating shaft can drive the second-stage reduction driving gear to drive, and the second-stage reduction driving gear can drive the two second-stage reduction driven gears to rotate.

Further, tertiary gear reduction unit includes tertiary speed reduction driven gear and two tertiary speed reduction driving gears, tertiary speed reduction driven gear installs the one end that main hoisting sprocket is located the gear cover, and two tertiary speed reduction driving gear one side dead axles are fixed respectively at two secondary speed reduction driven gear's side middle part, and the opposite side dead axle and the fixed disk side of two tertiary speed reduction driving gears rotate and are connected, and two tertiary speed reduction driving gears are located tertiary speed reduction driven gear's both sides and are connected with tertiary speed reduction driven gear meshing respectively. Two second grade speed reduction driven gear rotations can drive two tertiary speed reduction driving gears respectively and rotate together, and the rotation of two tertiary speed reduction driving gears can drive tertiary speed reduction driven gear rotation, and tertiary speed reduction driven gear drives the rotation of main hoisting sprocket.

Furthermore, the pneumatic motor air-conditioning system also comprises a compressed air pipeline, and the end part of the compressed air pipeline is arranged at an air inlet of the pneumatic motor. The pneumatic motor can use compressed air of a compressed air pipeline arranged underground as a power source through a compressed air pipeline, does not need extra accessories, meets the basic requirement of frequently changing the use place, and provides space for saving cost and reducing consumption.

Furthermore, the pneumatic motor air-conditioning system further comprises a manual switch, and the manual switch for controlling the pneumatic motor to start and stop is installed at the air inlet of the pneumatic motor.

Furthermore, the lifting device also comprises a direction converter, wherein the direction converter for controlling the rotating direction of the pneumatic motor is arranged on the pneumatic motor, and the direction converter can change the rotating direction of an output shaft of the pneumatic motor and can complete the lifting operation of the pneumatic hoist.

Furthermore, the gearbox further comprises a friction ratchet wheel non-return mechanism, wherein the friction ratchet wheel non-return mechanism is positioned in the gearbox, and the friction ratchet wheel non-return mechanism is arranged on the side surface of the first-stage reduction driven gear. The friction ratchet wheel check mechanism can check the first-stage reduction driven gear.

Compared with the prior art, the beneficial effects of the utility model are that: the pneumatic hoist has the following advantages:

1. the pneumatic hoist is hung through the lifting hook, the lifting hook is connected with the two fixed disks through the mounting block and the transverse column, the two fixed disks are fixed through the fixing pin columns to form a basic framework, a lifting chain wound on the side surface of the main hoisting chain wheel is bound with lifting objects, the power of the pneumatic motor is transmitted to the main hoisting chain wheel through the primary gear reduction mechanism, the secondary gear reduction mechanism and the tertiary gear reduction mechanism, the main hoisting chain wheel rotates to lift the objects through the lifting chain, the labor intensity of an operator is reduced, the pneumatic hoist can be easily operated by only one person, the labor cost is reduced, the operation cost is low, and the work efficiency is improved;

2. the pneumatic motor can use compressed air of a compressed air pipeline arranged underground as a power source through a compressed air pipeline, only the compressed air is needed, extra accessories are not needed, the basic requirement of frequently changing the use place is met, and space is provided for saving expenses and reducing consumption.

Drawings

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

FIG. 2 is a schematic structural view of a primary gear reduction mechanism of the present invention;

FIG. 3 is a schematic view of the structure of the non-return mechanism of the friction ratchet wheel of the present invention;

FIG. 4 is a schematic view of the structure of one side of the gear cover of the present invention;

FIG. 5 is a schematic view of the structure of the other side inside the gear cover of the present invention;

fig. 6 is a schematic structural view of the hoisting chain and the main hoisting chain wheel of the present invention.

In the figure: 1 pneumatic motor, 2 compressed air pipeline, 3 manual switch, 4 direction converter, 5 jack-up chains, 6 gear boxes, 7 one-level speed reduction driven gear, 8 lifting hooks, 9 fixed disks, 10 gear covers, 11 pivots, 12 one-level speed reduction driving gears, 13 fixed pins, 14 friction ratchet non return mechanisms, 15 installation blocks, 16 crossbars, 17 main jack-up chain wheels, 18 three-level speed reduction driven gear, 19 three-level speed reduction driving gears, 20 two-level speed reduction driven gears, 21 two-level speed reduction driving gears, 22 gear installation racks.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the pneumatic hoist comprises a pneumatic motor 1, a gear box 6, a lifting hook 8, a fixed disc 9 and a gear cover 10;

the two fixed disks 9 are fixedly connected through fixed pins 13, the bottom of the lifting hook 8 is fixedly connected with an installation block 15, a cross column 16 is inserted into a side round hole of the installation block 15, two ends of the cross column 16 are respectively connected with side fixing holes at the tops of the two fixed disks 9, the installation hole in the middle of the two fixed disks 9 is rotatably connected with two ends of a main hoisting chain wheel 17, and a through hole penetrating through the middle of the main hoisting chain wheel 17 is rotatably connected with a rotating shaft 11;

gear box 6 is installed in the outside of one of them fixed disk 9, and gear cover 10 is installed in the outside of another fixed disk 9, install one-level gear reduction mechanism in the gear box 6, and one side that lifting hook 8 was kept away from to gear box 6 is through bolt fixedly connected with pneumatic motor 1, the output shaft of pneumatic motor 1 passes through one-level gear reduction mechanism and 11 one end transmissions that are located gear box 6 of pivot are connected, one-level gear reduction mechanism includes one-level reduction driven gear 7 and one-level reduction driving gear 12, the output shaft of pneumatic motor 1 extends to in the gear box 6 and is connected with one-level reduction driving gear 12, one-level reduction driven gear 7 is installed in the one end that 11 is located gear box 6 of pivot, and one-level reduction driven gear 7 is connected with. The output shaft of the pneumatic motor 1 drives the first-stage reduction driven gear 7 to rotate through the first-stage reduction driving gear 12, the rotating shaft 11 is driven to rotate through the first-stage reduction driven gear 7, the gear cover 10 is internally provided with the second-stage gear reduction mechanism and the third-stage gear reduction mechanism through the gear mounting rack 22 respectively, one end of the rotating shaft 11, which is positioned in the gear cover 10, is connected with the end part of the main hoisting chain wheel 17 through the second-stage gear reduction mechanism and the third-stage gear reduction mechanism in a transmission way, and the part of the main hoisting chain wheel 17, which is positioned between the two fixed discs 9. The hoisting chain 5 is formed by connecting chain links which are alternately arranged vertically and horizontally in series, the middle part of the main hoisting chain wheel 17 is provided with an annular groove corresponding to the longitudinal chain link of the hoisting chain 5 along the circumferential direction, the main hoisting chain wheel 17 is positioned at two sides of the annular groove and is provided with a convex ring, and the convex ring is provided with a clamping groove corresponding to the transverse chain link of the hoisting chain 5 at an equal angle, so that the stability of the main hoisting chain wheel 17 when the hoisting chain 5 is wound is facilitated.

The secondary gear reduction mechanism includes secondary reduction driving gear 21 and two secondary reduction driven gear 20, and secondary reduction driving gear 21 installs the one end that is located gear cover 10 in pivot 11, and two secondary reduction driven gear 20 are located the both sides of secondary reduction driving gear 21 and are connected with the meshing of secondary reduction driving gear 21 respectively, and two secondary reduction driven gear 20 rotate to be connected on gear mounting frame 22. The rotation of the rotating shaft 11 can drive the second-stage reduction driving gear 21 to drive, and the second-stage reduction driving gear 21 can drive the two second-stage reduction driven gears 20 to rotate.

The tertiary gear reduction mechanism includes tertiary speed reduction driven gear 18 and two tertiary speed reduction driving gears 19, tertiary speed reduction driven gear 18 installs the one end that is located gear cover 10 at main hoisting sprocket 17, two tertiary speed reduction driving gears 19 one side end shafts are fixed respectively in the side middle part of two secondary speed reduction driven gear 20, two tertiary speed reduction driving gears 19's opposite side end shafts and fixed disk 9 side are rotated and are connected, two tertiary speed reduction driving gears 19 are located tertiary speed reduction driven gear 18's both sides and are connected with tertiary speed reduction driven gear 18 meshing respectively. The two second-stage reduction driven gears 20 can respectively drive the two third-stage reduction driving gears 19 to rotate together, the rotation of the two third-stage reduction driving gears 19 can drive the third-stage reduction driven gears 18 to rotate, and the third-stage reduction driven gears 18 drive the main hoisting chain wheel 17 to rotate.

Wherein, still include compressed air pipeline 2, the air inlet at pneumatic motor 1 is installed to the tip of compressed air pipeline 2. Pneumatic motor 1 can regard the compressed air of the compressed air pipeline of laying in the pit as the power supply through compressed air pipeline 2, do not need extra too much annex, satisfy the basic requirement of frequent change use site, space is provided for festival branch consumption reduction, still include manual switch 3, the air inlet department of pneumatic motor 1 installs the manual switch 3 that control pneumatic motor 1 opened and shut down, still include direction converter 4, install the direction converter 4 of control pneumatic motor 1 direction of rotation on the pneumatic motor 1, direction converter 4 can change the output shaft direction of rotation of pneumatic motor 1, can accomplish the lift operation of pneumatic hoist, reduce operator's intensity of labour, only need alone can easily operate, the cost of labor is reduced, the running cost is low, and the work efficiency is improved.

The gearbox is characterized by further comprising a friction ratchet wheel check mechanism 14, wherein the friction ratchet wheel check mechanism 14 is located in the gearbox 6, and the friction ratchet wheel check mechanism 14 is installed on the side face of the first-stage reduction driven gear 7. The friction ratchet wheel non-return mechanism 14 can adopt a non-return ratchet wheel and a driving pawl, and can perform non-return on the primary reduction driven gear 7, so that the lifted object is in a stable height.

When in use: the pneumatic hoist crane is hung through the lifting hook 8, the lifting hook 8 is connected with the two fixing discs 9 through the mounting block 15 and the transverse column 16, the two fixing discs 9 are fixed through the fixing pin columns 13 to form a basic framework, the hoisting objects are bound on the hoisting chains 5 wound on the side faces of the main hoisting chain wheel 17, power of the pneumatic motor 1 is transmitted to the main hoisting chain wheel 17 through the primary gear reduction mechanism, the secondary gear reduction mechanism and the tertiary gear reduction mechanism, and the main hoisting chain wheel 17 can rotate to hoist the objects through the hoisting chains 5.

Specifically;

1) the selection of a power source: at present, the most adopted hoisting device in a mine is a hand-pulling chain block, which has the advantages of low cost, convenient carrying and the like, but has the defects of more manpower needed when hoisting heavy objects and low operation efficiency. This requires the use of other power sources in the design of the retrofit lifting device.

First, the electric power is tried as a power source because the design of accessories and the running cost are low, but it is found through research that the electric hoisting device is not suitable for underground, because the electric facilities must have explosion-proof performance underground, the requirements are high, especially the cable interface position, the operation and the trouble are very troublesome, and thus the scheme is eliminated.

Next, attempts have been made to use hydraulic pressure as a power source because hydraulic devices are provided in many locations downhole and work can be performed by the power source of these hydraulic devices. However, through on-site investigation and analysis, the problems that a plurality of places needing the hoisting device are not provided with hydraulic devices, the leakage of hydraulic pipelines can cause environmental pollution, the increase of the operation cost, the inconvenience in operation and the like are found, and the scheme is eliminated.

Finally, most of underground roadways are paved with compressed air pipelines, a power source can be conveniently obtained by only one pneumatic pipeline, and the adoption of pneumatic power as the power source of the hoisting device is a proper scheme.

2) The selection of the transmission device is as follows:

the working characteristics of the pneumatic hoist determine that the working drum of the pneumatic hoist must have large torque, and on the premise that the power of a power machine (a pneumatic motor) is certain, the power machine is characterized in that:

Pw =Tn/9550(KW)

resistance torque of T-power machine

n-speed of power machine drum

To obtain a torque that meets the requirements, the rotation speed of the power machine (pneumatic motor) must be reduced to a reasonable rotation speed by the transmission device.

Three-level gear transmission is adopted, and the gear ratio of the first-level gear reduction mechanism is 25: 90, the gear ratio of the two-stage gear reduction mechanism is 5: 31, the gear ratio of the three-stage gear speed reducing mechanism is 4: 23, total ratio of 1: 128, is fully capable of meeting the requirements.

3) Experiment of

The performance of the pneumatic hoist crane is verified through experiments:

lifting a 3 ton weight;

experiments prove that under the condition of 0.8mPa of compressed air, the lifting can be realized through a single chain, the rotating speed of a reel is about 35 rpm, and the rotating speed of the reel is about 65 rpm when the reel is landed.

Lifting a weight of 5 tons;

experiments prove that under the condition of 0.8mPa of compressed air, the lifting can not be realized through a single chain, when a double-chain mechanism with one end of a chain fixed and a chain wheel lifting hook is adopted, the lifting can be realized, the rotating speed of a winding drum is about 40 revolutions per minute, and the rotating speed of the winding drum is about 70 revolutions per minute during landing.

Experiments prove that the pneumatic hoist crane can meet the hoisting requirement and has reliable performance.

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. Pneumatic hoist, its characterized in that: comprises a pneumatic motor (1), a gear box (6), a lifting hook (8), a fixed disc (9) and a gear cover (10);

the two fixed disks (9) are fixedly connected through fixed pins (13), the bottom of the lifting hook (8) is fixedly connected with an installation block (15), a cross column (16) is inserted into a side round hole of the installation block (15), two ends of the cross column (16) are respectively connected with side fixed holes at the tops of the two fixed disks (9), an installation hole in the middle of each fixed disk (9) is rotatably connected with two ends of a main hoisting chain wheel (17), and a through hole in the middle of each main hoisting chain wheel (17) is rotatably connected with a rotating shaft (11);

a gear box (6) is arranged on the outer side of one fixed disc (9), a gear cover (10) is arranged on the outer side of the other fixed disc (9), a primary gear reduction mechanism is arranged in the gear box (6), and one side of the gear box (6) far away from the lifting hook (8) is fixedly connected with a pneumatic motor (1) through a bolt, the output shaft of the pneumatic motor (1) is in transmission connection with one end of a rotating shaft (11) positioned in the gear box (6) through a primary gear reduction mechanism, install secondary gear reduction unit and tertiary gear reduction unit respectively through gear mounting bracket (22) in gear cover (10), one end that pivot (11) are located gear cover (10) loops through secondary gear reduction unit and tertiary gear reduction unit and is connected with the end drive of main hoisting sprocket (17), and the part winding that main hoisting sprocket (17) are located between two fixed disks (9) has hoisting chain (5).

2. The wind hoist of claim 1, characterized in that: one-level gear reduction unit includes one-level reduction driven gear (7) and one-level reduction driving gear (12), the output shaft of pnematic motor (1) extends to in gear box (6) and is connected with one-level reduction driving gear (12), one-level reduction driven gear (7) are installed in pivot (11) and are located the one end of gear box (6), and one-level reduction driven gear (7) are connected with one-level reduction driving gear (12) meshing.

3. The wind hoist of claim 1, characterized in that: two stage gear reduction mechanism includes second grade speed reduction driving gear (21) and two second grade speed reduction driven gear (20), the one end that is located gear cover (10) in pivot (11) is installed in second grade speed reduction driving gear (21), and two second grade speed reduction driven gear (20) are located the both sides of second grade speed reduction driving gear (21) and are connected with second grade speed reduction driving gear (21) meshing respectively, and rotate two second grade speed reduction driven gear (20) and connect on gear mounting frame (22).

4. The pneumatic hoist as claimed in claim 3, characterized in that: tertiary gear reduction unit includes tertiary speed reduction driven gear (18) and two tertiary speed reduction driving gears (19), the one end that is located gear cover (10) at main hoisting sprocket (17) is installed in tertiary speed reduction driven gear (18), and the side middle part at two secondary speed reduction driven gear (20) is fixed respectively to two tertiary speed reduction driving gear (19) one side end shafts, and the opposite side end shaft and fixed disk (9) side of two tertiary speed reduction driving gears (19) rotate to be connected, and two tertiary speed reduction driving gears (19) are located the both sides of tertiary speed reduction driven gear (18) and are connected with tertiary speed reduction driven gear (18) meshing respectively.

5. The wind hoist of claim 1, characterized in that: the pneumatic motor is characterized by further comprising a compressed air pipeline (2), wherein the end part of the compressed air pipeline (2) is installed at an air inlet of the pneumatic motor (1).

6. The pneumatic hoist as claimed in claim 5, characterized in that: still include hand switch (3), the air inlet department of pneumatic motor (1) installs hand switch (3) that control pneumatic motor (1) and open and stop.

7. Pneumatic hoist according to claim 5 or 6, characterized in that: the wind driven generator is characterized by further comprising a direction converter (4), wherein the direction converter (4) for controlling the rotating direction of the wind driven motor (1) is installed on the wind driven motor (1).

8. The wind hoist as claimed in claim 2, characterized in that: the gearbox is characterized by further comprising a friction ratchet wheel check mechanism (14), wherein the friction ratchet wheel check mechanism (14) is located in the gearbox (6), and the friction ratchet wheel check mechanism (14) is installed on the side face of the first-stage reduction driven gear (7).