CN106564823B

CN106564823B - Air hoist

Info

Publication number: CN106564823B
Application number: CN201510654021.XA
Authority: CN
Inventors: 李志强
Original assignee: Changzhou Powkeen Machinery Manufacturing Co Ltd
Current assignee: Changzhou Powkeen Machinery Manufacturing Co Ltd
Priority date: 2015-10-10
Filing date: 2015-10-10
Publication date: 2018-11-27
Anticipated expiration: 2035-10-10
Also published as: CN106564823A

Abstract

The invention belongs to technical field of crane equipment, a kind of air hoist, including pneumatic part, running part and lift portion；Pneumatic part includes pneumatic vane motor, control valve and braking mechanism；Control valve includes valve pocket, and the first air inlet is provided on valve pocket and is located at the first venthole and the second venthole of the first air inlet two sides；Spool, spool include on be provided with two annular protrusions to match with valve pocket, form the first air drain between two annular protrusions；Spool both ends are provided with piston；Valve seat is provided with mounting hole in valve seat, and valve pocket is fixed in mounting hole, and spool is slidably arranged in piston by protrusion；Mounting hole setting closed at both ends；Two the second air inlets being connected to of the cavity between mounting hole closed end and piston and the power stomata being connected to the first air inlet are provided in valve seat one side；The rotating forward venthole being connected to respectively with the first venthole and the second venthole and reversion venthole are additionally provided on valve seat another side.

Description

Air hoist

Technical field

The invention belongs to technical field of crane equipment more particularly to a kind of air hoists.

Background technique

Air hoist mainly includes three parts, respectively pneumatic part and pneumatic department using air motor as power mechanism Divide the running part of transmission connection and the lift portion with running part transmission connection.Pneumatic vane motor is will to compress The pressure energy of air is converted into the device of the mechanical energy of rotation, mainly includes blade rotor and stator.If realizing air motor Positive and negative rotation, in the prior art usual way be, from air inlet enter gas chamber after gas spray to blade and act on the overhanging of blade Position generates torque band turn and rotates forward, and exhaust gas is discharged from exhaust outlet；And air inlet and exhaust outlet exchange are dropped, that is, when rotating forward Exhaust outlet is as air inlet, and air inlet is as exhaust outlet, so that the method for rotor reversion is cumbersome, inconvenient for use.

Summary of the invention

The purpose of the present invention is overcome of the existing technology need exhaust outlet and air inlet exchange to realize gas Cumbersome, the inconvenient for use defect of the method for dynamic positive and negative rotation of motor, provides a kind of air hoist.

The technical solution adopted by the present invention to solve the technical problems is：A kind of air hoist, including pneumatic part, transmission Part and lift portion；The pneumatic part includes pneumatic vane motor, control valve and braking mechanism；

The control valve includes valve pocket, and the first air inlet is provided on the valve pocket and is located at first air inlet The first venthole and the second venthole of hole two sides；

Spool, the spool include on be provided with two annular protrusions to match with the valve pocket, two rings The first air drain is formed between shape protrusion, the width of first air drain is less than between first venthole and the second venthole Distance；The spool both ends are provided with piston；

Valve seat is provided with mounting hole in valve seat, and in the mounting hole, the spool is logical for the valve pocket fixed setting It crosses the annular protrusion to be slidably arranged in the piston, the spool is slidably arranged in the mounting hole by the piston It is interior；The mounting hole setting closed at both ends；It is provided in the valve seat one side between the mounting hole closed end and piston Cavity connection two the second air inlets and the power stomata that is connected to first air inlet；On the valve seat another side It is additionally provided with the rotating forward venthole being connected to respectively with first venthole and the second venthole and reversion venthole, the rotating forward The bottom of Pneumatic motor rotor is arranged in venthole and reversion venthole.

Further, to make piston that can automatically reset in the case where gas source is closed, piston one end setting There are the first spring base and fixed plate, reset spring, first spring base are installed between first spring base and fixed plate It is fixedly connected with the piston, the mounting hole both ends are closed by the fixed plate to be arranged.

Further, it since the blade in air motor is slidably arranged on rotor, is also set up on the valve seat There are the third venthole and the 4th venthole being connected to respectively with the first venthole and the second venthole, is additionally provided on the valve seat The blade air drain being connected to respectively with third venthole and the 4th venthole utilizes third venthole and the 4th venthole and blade Compressed gas in air drain enables to blade to stretch out outside air motor, so that air motor effectively rotates.

Preferably, be that air motor is enabled effectively to rotate, be additionally provided on the valve seat rotate forward air drain and Air drain is inverted, the one end for rotating forward air drain is arranged in the venthole that rotates forward, and reversion air drain is arranged in the reversion venthole One end, the rotating forward venthole is located remotely from each other with reversion venthole or setting close to each other；The rotating forward air drain length is big In reversion air drain length.Rotating forward the compressed gas in venthole in this way can flow along air drain is rotated forward, so that drive rotor rotates forward, Inverting compressed gas in venthole can be along reversion air drain flowing, so that drive rotor inverts；And cylinder rotate forward when be that will weigh Object is promoted to certain altitude, and when reversion is that weight is reduced to certain height or is put down, and cylinder loads larger when rotating forward, and makes just Turn air drain extended length, load capacity is improved when enabling to rotate forward.

Further, it to prevent Pneumatic motor rotor stability of rotation, does not glance off, the air motor stator is close to control One end inner wall of valve processed is provided with the first notch corresponding with the rotating forward air drain and reversion air drain and the second notch respectively, institute The first notch and the second notch is stated to be arranged along rotor circumference direction；The air motor stator other end be provided with respectively with it is described First notch and the corresponding third notch of the second notch and the 4th notch；First notch is lacked with third notch and second Mouth is connected to between the 4th notch by through-hole, so that also has gas source power above rotor, power is at the both ends of rotor Drive rotor rotation, improves the stability of rotor rotation.

Preferably, being connected between first notch and third notch by two through-holes；Second notch and By a through-hole connection between 4th notch, the air inflow of third notch can be improved in this way, to improve air motor just Load capacity when turning.

Preferably, the air motor stator side wall is provided with gas vent, the gas vent and rotating forward venthole Distance is greater than the distance between the gas vent and reversion venthole, so that air inlet and gas vent when air motor rotates forward The distance between lengthen, gas travel increases in air motor air cavity, is conducive to improve load capacity when air motor rotates forward.

Further, it is the installation convenient for air motor, saves installation space, be provided on the valve seat for installing The bearing block of Pneumatic motor rotor.

Preferably, the braking mechanism includes brake mount, second spring seat, cover board, brake block and circlip；

The brake mount is provided with installation cavity, and the brake mount bottom is provided with axis hole；The cover board, second spring Seat and brake block are from top to bottom sequentially arranged in installation cavity, and the second spring seat matches with the installation cavity, described Cover board is fixedly connected with the brake mount, and spring, the second spring seat are provided between the second spring seat and cover board On be provided with several for pacifying spring-loaded mounting groove, several mounting grooves are uniformly distributed on second spring seat, described Corresponding several mounting grooves are also equipped on cover board；The brake block is arranged in the shaft of rotor, and the circlip setting exists Between brake block and second spring seat；Setting is connected to the installation cavity between the second spring seat and brake block on the brake mount With the air flue of air motor air cavity.

Preferably, being so that brake block has better effect, and cover board and brake mount junction is avoided to generate leakage Gas phenomenon, the brake block center are provided with rectangular sleeve joint hole, and the brake block is mounted on by rectangular sleeve joint hole to be turned In sub- shaft, and it can be rotated together with rotor；Sealed set is used between the cover board and brake mount.

Beneficial effect：The present invention is controlled using extraneous gas source pushes piston to move in mounting hole, so that spool exists Sliding in valve pocket, so that power stomata is connected to rotating forward stomata or reversion stomata, to control the positive and negative of air motor Turn.It is easy to operate, the positive and negative rotation that a power stomata is controllable air motor is only set, and by improving, improves gas Load capacity when dynamic motor rotates forward；

In addition, installing brake part using brake mount, so that installation cavity is connected to air motor air cavity, effectively control is pacified The phenomenon that behaveing affectedly the movement of interior second spring seat, will not generating gas leakage, ensure that the job stability of air motor, improves life Efficiency is produced, security risk is eliminated.

Detailed description of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is air hoist general assembly drawing；

Fig. 2 is motor portion schematic perspective view；

The schematic perspective view of Fig. 3 ontrol valve assembly；

Fig. 4 is another angle schematic perspective view of ontrol valve assembly；

Fig. 5 spool schematic perspective view；

Fig. 6 valve pocket schematic perspective view；

Fig. 7 is ontrol valve assembly cross-sectional view；

Fig. 8 ontrol valve assembly and rotor mounting structure schematic diagram；

Fig. 9 is brake mount schematic perspective view；

Figure 10 is another angle schematic perspective view of brake mount；

Figure 11 is brake block schematic perspective view；

Figure 12 is second spring seat schematic perspective view；

Figure 13 is brake assembly cross-sectional view；

Figure 14 is rotor and stator mounting structure schematic diagram；

Figure 15 is rotor and another angled arrangement schematic diagram of stator.

Wherein:100. pneumatic part, 200. running parts, 300. lift portions, 1, valve seat, 11. power stomatas, 12. peaces Dress hole, 13. second air inlets, 14. rotating forward ventholes, 141. rotating forward air drains, 15. reversion ventholes, 151. reversion air drains, 16. Third venthole, 17. the 4th ventholes, 18. bearing blocks, 19. blade air drains, 2. spools, 21. fixed plates, 22. annular protrusions, 23. the first grooving, 24. pistons, 25. first spring bases, 3. valve pockets, 31. first air inlets, 32. first ventholes, 33. second Venthole, 4. rotors, 41. shafts, 5. brake mounts, 51. installation cavitys, 52. air flues, 6. second spring seats, 61. mounting grooves, 7. stop Vehicle piece, 71. sleeve joint holes, 8. cover boards, 9. stators, 91. third notches, 92. the 4th notches, 93. gas vents, 94. through-holes, 95. One notch, 96. second notches.

Specific embodiment

Embodiment 1

As shown in Figure 1, a kind of air hoist, including pneumatic part 100, running part 200 and lift portion 300；Such as Fig. 2 Shown, the pneumatic part 100 includes pneumatic vane motor, control valve and braking mechanism.

The control valve includes valve pocket 3, as shown in fig. 6, being provided with the first air inlet 31 and respectively position on the valve pocket 3 The first venthole 32 and the second venthole 33 in 31 two sides of the first air inlet.

As shown in Fig. 5 and Fig. 7, spool 2, the spool 2 include above being provided with two annulars to match with the valve pocket 3 Protrusion 22, forms the first air drain 23 between two annular protrusions 22, and the width of first air drain 23 is less than described first The distance between venthole 32 and the second venthole 33；2 both ends of spool are provided with piston 24；Described 24 one end of piston It is provided with the first spring base 25 and fixed plate 21, reset spring is installed between first spring base 25 and fixed plate 21, institute The first spring base 25 is stated to be fixedly connected with the piston 24.

As shown in Fig. 3,4,7, valve seat 1 is provided with mounting hole 12 in valve seat 1, and the valve pocket 3 is fixed at the peace It fills in hole 12, the spool 2 is slidably arranged in the piston 24 by the annular protrusion 22, and the spool 2 passes through institute Piston 24 is stated to be slidably arranged in the mounting hole 12；12 both ends of mounting hole are closed by the fixed plate 21 to be arranged；Institute Two the second air inlets that the cavity between 12 closed end of mounting hole and piston 24 is connected to are provided in 1 one side of valve seat stated Hole 13 and the power stomata 11 being connected to first air inlet 31；Be additionally provided on 1 another side of valve seat respectively with institute State rotating forward venthole 14 that the first venthole 32 is connected to the second venthole 33 and reversion venthole 15, as shown in figure 8, it is described just Produce stomata 14 and reversion venthole 15 be located at be additionally provided with rotating forward gas on the bottom of Pneumatic motor rotor 4, the valve seat 1 The one end for rotating forward air drain 141, the reversion venthole 15 is arranged in slot 141 and reversion air drain 151, the venthole 14 that rotates forward One end of reversion air drain 151 is set, and the rotating forward venthole 14 and reversion venthole 15 are located remotely from each other or close to each other set It sets；141 length of rotating forward air drain is greater than reversion 151 length of air drain, makes to rotate forward 141 extended length of air drain, just produce in this way Compressed gas in stomata 14 can be flowed along air drain 141 is rotated forward, so that drive rotor 4 rotates forward, inverted and compressed in venthole 15 Gas can be flowed along reversion air drain 151, so that drive rotor 4 inverts；And cylinder is by heavy lift to certain when rotating forward Highly, be that weight is reduced to certain height or is put down when reversion, cylinder loaded when rotating forward it is larger, it is negative when enabling to rotate forward Loading capability is improved.The bearing block 18 for installing Pneumatic motor rotor 4 is provided on the valve seat 1.

The third venthole being connected to respectively with the first venthole 32 and the second venthole 33 is additionally provided on the valve seat 1 16 and the 4th venthole 17, the leaf being connected to respectively with third venthole 16 and the 4th venthole 17 is additionally provided on the valve seat 1 Piece air drain 19 enables to blade using the compressed gas in third venthole 16 and the 4th venthole 17 and blade air drain 19 It stretches out outside air motor, so that air motor effectively rotates.

As shown in FIG. 14 and 15, it to prevent 4 stability of rotation of Pneumatic motor rotor, does not glance off, the air motor is fixed Son 9 is provided with close to one end inner wall of control valve and lacks respectively with the rotating forward air drain 141 and reversion air drain 151 corresponding first Mouth 95 and the second notch 96, first notch 95 and the second notch 96 are arranged along 4 circumferencial direction of rotor；The air motor is fixed Sub 9 other ends are provided with third notch 91 corresponding with first notch 95 and the second notch 96 and the 4th notch respectively 92；It is connected between first notch 95 and third notch 91 by two through-holes 94, second notch 96 and the 4th notch Be connected between 92 by through-hole 94, so that 4 top of rotor also has gas source power, power gas source in rotor 4 two It holds drive rotor 4 to rotate, improves the stability of the rotation of rotor 4, and improve the air inflow of third notch 91, improve gas Load capacity when dynamic motor rotates forward.

9 side wall of air motor stator is provided with gas vent 93, the gas vent 93 and rotate forward venthole 14 away from From being greater than the distance between the gas vent 93 and reversion venthole 15, so that air inlet and exhaust when air motor rotates forward The distance between hole 93 lengthens, and gas travel increases in air motor air cavity, is conducive to improve load when air motor rotates forward Ability.

As shown in figure 13, specifically, the braking mechanism includes brake mount 5, second spring seat 6, cover board 8, brake block 7 And circlip.

As shown in figure 9, the brake mount 5 is provided with installation cavity 51,5 bottom of brake mount is provided with axis hole；Such as figure Shown in 13, the cover board 8, second spring seat 6 and brake block 7 are from top to bottom sequentially arranged in installation cavity 51, and described Two spring bases 6 match with the installation cavity 51, and the cover board 8 is fixedly connected with the brake mount 5, the second spring seat 6 It is provided with spring between cover board 8, as shown in figure 12, is provided on the second spring seat 6 several spring-loaded for pacifying Mounting groove 61, several mounting grooves 61 are uniformly distributed on second spring seat 6, as shown in figure 11, are also set on the cover board 8 It is equipped with corresponding several mounting grooves 61；The brake block 7 is arranged in the shaft 41 of rotor 4, and the circlip setting is being braked Between piece 7 and second spring seat 6；As shown in Figures 9 and 10, setting is connected to the second spring seat 6 and brake on the brake mount 5 The air flue 52 of installation cavity 51 and air motor air cavity between piece 7.

As shown in figure 11,7 center of brake block is provided with rectangular sleeve joint hole 71,7 side of passing through of brake block Shape sleeve joint hole 71 is mounted in 4 shaft 41 of rotor, and can be rotated together with rotor 4；Between the cover board 8 and brake mount 5 Using sealed set.

Working principle is as follows：Pneumatic motor rotor 4 is mounted on valve seat 1, when initial position, on valve pocket 3 first into Stomata 31 is closed under the blocking of the annular protrusion 22 with first venthole 32 and the second venthole 33；When on valve seat 1 In one of them second air inlet 13 when air inlet, pushes a piston 24 to move towards the first air inlet 31, reach certain position When the first air inlet 31 be connected to the first venthole 32 by the first air drain 23, compressed gas pass through power stomata 11, first into Stomata 31, the first venthole 32, which reach, rotates forward stomata and third venthole 16, in third venthole 16 and blade air drain 19 Gas makes blade stretch out rotor 4, rotates forward gas in venthole 14 and passes through rotating forward air drain 141, while rotating forward gas in venthole 14 Third notch 91 is reached by the first notch 95 and through-hole 94, gas and the first notch 95 and third in rotating forward air drain 141 Gas push rotor 4 in notch 91 steadily rotates forward；When air inlet in another second air inlet 13 on valve seat 1, push another A piston 24 is moved towards the first air inlet 31, and the second air inlet 13 passes through the first air drain 23 and described the when reaching certain position The connection of two ventholes 33, compressed gas reach reversion venthole by power stomata 11, the first air inlet 31, the second venthole 33 15 and the 4th venthole 17, gas makes blade stretch out rotor 4, reversion in the 4th venthole 17 and its corresponding blade air drain 19 Gas is by reversion air drain 151 in stomata, while inverting gas in stomata and being lacked by the second notch 96 and the arrival of through-hole 94 the 4th Mouth 92, the gas push rotor 4 inverted in the gas and the second notch 96 and the 4th notch 92 in air drain 151 steadily invert. Air motor forward or reverse when, transmission mechanism deceleration, transmission the effects of under, drive lift portion 300 rotate, pass through chain Item is connect with lift portion 300 can be used for being promoted or being fallen landing.

When air motor normal rotation, gassy in air motor air cavity, gas is connected to brake mount 5 through air flue 52 Installation cavity 51 in, so that it is close towards cover board 8 to jack up second spring seat 6, spring-compressed, so that brake block 7 is with rotor 4 Rotation, air motor is in normal rotation state at this time；When stopping supplying power gas source, air motor gas intracavity gas is through arranging Stomata 93 empties, and air pressure reduces in the cavity in brake mount 5 between second spring seat 6 and brake block 7, and under the action of the spring the Two spring bases, 6 clamping brake block 7 and circlip, so that air motor is braked, when air motor does not work, even if lift portion 300 load weights will not slide.

It should be appreciated that described above, the specific embodiments are only for explaining the present invention, is not intended to limit the present invention.By The obvious changes or variations that spirit of the invention is extended out are still in the protection scope of this invention.

Claims

1. a kind of air hoist, it is characterised in that：Including pneumatic part (100), running part (200) and lift portion (300)； The pneumatic part (100) includes pneumatic vane motor, control valve and braking mechanism；The control valve includes valve pocket (3), institute State the first venthole for being provided with the first air inlet (31) on valve pocket (3) and being located at the first air inlet (31) two sides (32) and the second venthole (33)；Spool (2), the spool (2) include above being provided with two to match with the valve pocket (3) A annular protrusion (22) is formed the first air drain (23) between two annular protrusions (22), the width of first air drain (23) Degree is less than the distance between first venthole (32) and second venthole (33)；Spool (2) both ends are provided with work It fills in (24)；Valve seat (1), valve seat (1) is interior to be provided with mounting hole (12), and the valve pocket (3) is fixed at the mounting hole (12) in, the spool (2) is slidably arranged in the piston (24) by the annular protrusion (22), the spool (2) It is slidably arranged in the mounting hole (12) by the piston (24)；The mounting hole (12) setting closed at both ends；Described Two second for being provided with that the cavity between the mounting hole (12) closed end and piston (24) is connected in valve seat (1) one side into Stomata (13) and the power stomata (11) being connected to first air inlet (31)；It is also set up on valve seat (1) another side There are the rotating forward venthole (14) being connected to respectively with first venthole (32) and the second venthole (33) and reversion venthole (15), described to rotate forward venthole (14) and invert venthole (15) positioned at the bottom in Pneumatic motor rotor (4).

2. air hoist according to claim 1, it is characterised in that：Described piston (24) one end is provided with the first spring Seat (25) and fixed plate (21), is equipped with reset spring between first spring base (25) and fixed plate (21), and described first Spring base (25) is fixedly connected with the piston (24), and mounting hole (12) both ends are set by the fixed plate (21) closing It sets.

3. air hoist according to claim 1 or 2, it is characterised in that：Be additionally provided on the valve seat (1) respectively with The third venthole (16) and the 4th venthole (17) that first venthole (32) is connected to the second venthole (33), the valve seat (1) the blade air drain (19) being connected to respectively with third venthole (16) and the 4th venthole (17) is additionally provided on.

4. air hoist according to claim 1, it is characterised in that：Rotating forward air drain is additionally provided on the valve seat (1) (141) it is arranged with reversion air drain (151), described rotate forward venthole (14) in the one end for rotating forward air drain (141), the reversion goes out In one end of reversion air drain (151), the rotating forward venthole (14) and reversion venthole (15) are mutually remote for stomata (15) setting From or setting close to each other；Rotating forward air drain (141) length is greater than reversion air drain (151) length.

5. air hoist according to claim 4, it is characterised in that：It further include air motor stator (9), the pneumatic horse Up to stator (9) close to control valve one end inner wall be provided with respectively with the rotatings forward air drain (141) and invert air drain (151) relatively The first notch (95) and the second notch (96) answered, first notch (95) and the second notch (96) are along rotor (4) circumference side To setting；Air motor stator (9) other end be provided with respectively with first notch (95) and the second notch (96) phase Corresponding third notch (91) and the 4th notch (92)；First notch (95) and third notch (91) and the second notch (96) it is connected between the 4th notch (92) by through-hole (94).

6. air hoist according to claim 5, it is characterised in that：First notch (95) and third notch (91) Between pass through the connection of two through-holes (94)；Between second notch (96) and the 4th notch (92) even by a through-hole (94) It is logical.

7. air hoist according to claim 1, it is characterised in that：It further include air motor stator (9), the pneumatic horse It is provided with gas vent (93) up to stator (9) side wall, the gas vent (93) is greater than described at a distance from rotating forward venthole (14) The distance between gas vent (93) and reversion venthole (15).

8. air hoist according to claim 1, it is characterised in that：It is provided on the valve seat (1) for installing gas The bearing block (18) of dynamic motor rotor (4).

9. air hoist according to claim 1, it is characterised in that：The braking mechanism includes brake mount (5), second Spring base (6), cover board (8), brake block (7) and circlip；The brake mount (5) is provided with installation cavity (51), the brake mount (5) bottom is provided with axis hole；Cover board (8), second spring seat (6) and the brake block (7) is from top to bottom sequentially arranged at peace It behave affectedly in (51), the second spring seat (6) matches with the installation cavity (51), the cover board (8) and the brake mount (5) it is fixedly connected, spring is provided between the second spring seat (6) and cover board (8), is set on the second spring seat (6) It is equipped with several for pacifying spring-loaded mounting groove (61), several mounting grooves (61) are uniformly distributed on second spring seat (6), Corresponding several mounting grooves (61) are also equipped on the cover board (8)；Brake block (7) setting turns in rotor (4) On axis (41), the circlip is arranged between brake block (7) and second spring seat (6)；Setting connection institute on the brake mount (5) State the air flue (52) of the installation cavity (51) and air motor air cavity between second spring seat (6) and brake block (7).

10. air hoist according to claim 9, it is characterised in that：Described brake block (7) the center side of being provided with Shape sleeve joint hole (71), the brake block (7) are mounted in rotor (4) shaft (41) by rectangular sleeve joint hole (71), and can be with Rotor (4) rotates together；Sealed set is used between the cover board (8) and brake mount (5).