CN117023384B - Adjustable monorail crane protection equipment - Google Patents

Abstract

The invention relates to the technical field of cranes, in particular to an adjustable monorail crane protection device. Including connecting frame, cylinder, guide frame, sliding seat and reducing plate etc. all rotate in the connecting frame and be connected with a plurality of cylinders that contact with the track side to when making the mobile crane take place the skew, the cylinder pressurized can take place the back-and-forth slip, and the last symmetry of mobile crane is connected with two sets of guide frames, sliding seat and guide frame sliding connection and can slide from top to bottom, and the reducing plate is connected with the sliding seat, so that the reducing plate can be with track contact along with the upward motion of sliding seat, and the reducing plate can reduce the speed to the mobile crane through frictional force. When the movable crane is deviated, the screw rod is matched with the movable rod, the speed reducing plate can be driven to move upwards to contact with the track, the movable crane can be automatically decelerated through friction, and the screw rod can be rotated forwards and reversely according to different weights of materials, so that the initial position of the screw rod can be adjusted by moving left and right, and the deceleration time of the movable crane can be accurately adjusted.

Description

Adjustable monorail crane protection equipment

Technical Field

The invention relates to the technical field of cranes, in particular to an adjustable monorail crane protection device.

Background

The monorail crane uses a special I-steel suspended above the roadway as a track, and is a system which is formed by connecting suspended vehicles with various functions into a train set, is pulled by a traction device and runs along the track.

When the monorail crane lifts materials to turn, centrifugal force can be generated due to the inertia effect of the materials, so that the crane can outwards deviate, and safety accidents are caused, and therefore, the monorail crane needs to be controlled to decelerate manually when turning. However, the heavier the weight of material is, the bigger the centrifugal force is, and the accuracy of manual control overhead monorail speed reduction is not high, is difficult to accurately control the speed reduction time of overhead monorail according to the different weights of material, if the turning speed of the overhead monorail is too fast, then the overhead monorail can collide with the track, causes the incident, and the security is lower, and the track is pressed too greatly and can influence its life.

Disclosure of Invention

In view of the above, the invention provides an adjustable monorail crane protection device capable of improving safety, which can solve the defect that safety accidents are caused by low accuracy of manually controlling the speed reduction of a monorail crane.

The technical scheme of the invention is as follows:

the utility model provides a single track crane protection equipment with adjustable, including the slip cap, the connection frame, the connection spring, the guide frame, the sliding seat, the reducing plate, screw rod and carriage release, but symmetrical sliding connection has the slip cap of fore-and-aft sliding on the mobile crane, connection frame and slip cap end connection, when making the mobile crane take place the skew, the connection frame pressurized can take place the fore-and-aft sliding, in order to drive the synchronous slip of slip cap, the connection spring is connected with mobile crane and connection frame, in order to make the connection frame elasticity reset, symmetrical connection has two sets of guide frames on the mobile crane, the sliding seat is connected with guide frame sliding connection and can reciprocate, the reducing plate is connected with the sliding seat, in order to make the reducing plate follow the sliding seat upward movement with the track contact, the reducing plate reduces the speed to the mobile crane through frictional force, screw rod and carriage release threaded connection, in order to make the screw rod rotate and can back-and-forth movement adjustment position, many carriage release and mobile crane sliding connection and can the fore-and-aft sliding, carriage release, the carriage and screw rod one-to screw rod moves outside, and the outside movement can be extruded by the carriage and move up to the upward movement.

Preferably, the middle of the bottom of the sliding seat is provided with a bulge, and the inner end of the moving rod is provided with an inclined plane, and the inclined plane is contacted with the surface of the bulge so that the moving rod moves outwards to press the bulge to move upwards.

Preferably, the longitudinal section of the protrusion is trapezoidal.

Preferably, the connecting frame further comprises a roller, and a plurality of rollers contacting with the side surfaces of the rails are rotatably connected in the connecting frame so as to reduce friction between the connecting frame and the rails.

Preferably, the automatic braking device further comprises a braking mechanism, the braking mechanism comprises a braking disc, a mounting block, a moving plate, a clamping plate, a reset spring and a driving assembly, the braking disc is connected with the auxiliary wheel so that the braking disc can synchronously rotate along with the auxiliary wheel, the moving crane is symmetrically connected with the mounting blocks corresponding to the braking disc one by one, two cavities and two channels are symmetrically arranged in the mounting blocks, one ends, far away from each other, of the two cavities are communicated through the channels, the moving plate capable of sliding forwards and backwards is connected in the cavities in a sliding mode, the clamping plate is connected with the moving plate, the clamping plate can clamp the braking disc along with the movement of the moving plate to inwards so as to brake the auxiliary wheel, the reset spring is connected with the moving plate and the mounting block, the driving assembly is used for driving the moving plate to elastically reset along with the movement of the moving plate to the inner side.

Preferably, the driving assembly comprises a fixed plate, a sliding plate and a piston, wherein the fixed plate is connected to a sliding rod of the monorail crane body, so that the fixed plate can synchronously move back and forth along with the sliding rod, the sliding plate is in sliding connection with the mounting block and can slide back and forth, the sliding plate corresponds to the fixed plate one by one, the fixed plate moves inwards to contact with the sliding plate so as to extrude the sliding plate to move inwards, the piston is in sliding connection with the mounting block and can slide back and forth, and when the piston moves towards one side close to a track, hydraulic oil in the cavity can be extruded so that the hydraulic oil can push the moving plate to move inwards.

Preferably, the dust removing device further comprises a dust removing mechanism, wherein the dust removing mechanism comprises a collecting box, a fixing rod, a hollow sleeve, a connecting pipe and an air pump, the collecting box and the fixing rod are respectively connected to the movable crane, so that the collecting box and the fixing rod can move synchronously with the movable crane, the hollow sleeve is connected with the fixing rod, the connecting pipe is communicated with the hollow sleeve and the collecting box, the air pump is connected in the collecting box, an air outlet of the air pump is communicated with the outside of the collecting box, and air in the collecting box can be discharged through the air pump, so that suction can be generated at the position of the hollow sleeve to suck dust adhered to the surface of a track.

Preferably, the dust removing mechanism further comprises filter plates, wherein the filter plates are symmetrically connected in the collecting box and are respectively positioned at two sides of the air extracting pump so as to filter dust in the collecting box.

Preferably, the dust removing mechanism further comprises a scraping plate, wherein the scraping plates are arranged in the hollow sleeve and can slide in the hollow sleeve so as to scrape dust on the surface of the rail.

Preferably, the dust removing mechanism further comprises a sliding support rod and a compression spring, the two sliding support rods are symmetrically and slidably connected in the hollow sleeve, the scraping plate is movably connected with the sliding support rod, and the compression spring is connected with the sliding support rod and the hollow sleeve so as to press the sliding support rod, so that the scraping plate is tightly attached to the surface of the track.

Compared with the prior art, the invention has the following advantages:

1. when the movable crane is deviated, the screw rod is matched with the movable rod, the speed reducing plate can be driven to move upwards to contact with the track, the movable crane can be automatically decelerated through friction, and the screw rod can be rotated forwards and reversely according to different weights of materials, so that the initial position of the screw rod can be adjusted by moving left and right, and the deceleration time of the movable crane can be accurately adjusted.

2. According to the invention, through the action of the braking mechanism, the braking block can be contacted with the side surface of the track, so that the auxiliary wheel is decelerated until stopping, and the mobile crane can be assisted to brake.

3. According to the invention, dust adhered to the surface of the track can be scraped off through the scraper, and meanwhile, the dust scraped off by the scraper can be pumped into the collecting box through the air suction pump, so that the aim of automatically cleaning the track is fulfilled, and the braking effect of the brake block is ensured.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the monorail hoist body.

Fig. 3 is a schematic perspective view of the sliding sleeve, the connecting frame and the roller according to the present invention.

Fig. 4 is a schematic perspective view of another view of fig. 3 according to the present invention.

Fig. 5 is a schematic perspective view of a guide frame, a sliding seat and a speed reducing plate according to the present invention.

Fig. 6 is a cross-sectional view of the slide mount and the reduction plate of the present invention.

Fig. 7 is a schematic perspective view of a movable rod according to the present invention.

Fig. 8 is a schematic view showing a first perspective structure of the brake mechanism of the present invention.

Fig. 9 is a schematic view showing a second perspective structure of the brake mechanism of the present invention.

Fig. 10 is a schematic view showing a specific structure of the mounting block of the present invention.

Fig. 11 is a cross-sectional view of a mounting block of the present invention.

Fig. 12 is a schematic perspective view of a dust removing mechanism of the present invention.

Fig. 13 is a schematic diagram of a specific structure of the dust removing mechanism of the present invention.

Fig. 14 is a schematic perspective view of the hollow sleeve, sliding strut and scraper of the present invention.

Fig. 15 is a cross-sectional view of a hollow sleeve of the present invention.

Reference numerals illustrate: the device comprises a 1-monorail crane body, 11-rails, 12-mobile cranes, 13-driving motors, 14-driving wheels, 15-hydraulic cylinders, 16-connecting rods, 17-sliding rods, 18-brake blocks, 19-auxiliary wheels, 2-sliding sleeves, 3-connecting frames, 4-rollers, 5-connecting springs, 6-guide frames, 7-sliding seats, 8-speed reducing plates, 9-screws, 10-moving rods, 111-brake discs, 112-mounting blocks, 113-fixed plates, 114-sliding plates, 115-pistons, 116-moving plates, 117-clamping plates, 118-return springs, 131-collecting boxes, 132-fixed rods, 133-hollow sleeves, 134-connecting pipes, 135-sucking pumps, 136-filter plates, 137-sliding struts, 138-scraping plates and 139-compression springs.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Examples: as shown in fig. 1 and 2, the monorail crane body 1 includes a track 11, a mobile crane 12, a driving motor 13, a driving wheel 14, a hydraulic cylinder 15, a connecting rod 16, sliding rods 17, brake blocks 18 and auxiliary wheels 19, the mobile crane 12 is arranged on the track 11, two driving motors 13 are symmetrically connected on the mobile crane 12 front and back, the driving wheels 14 are connected on the output shafts of the driving motors 13, the driving wheels 14 are contacted with the side surfaces of the track 11, the driving wheels 14 can roll on the track 11, four hydraulic cylinders 15 are symmetrically connected on the lower part of the mobile crane 12 front and back, four connecting rods 16 are symmetrically connected on the mobile crane 12 in a rotating way, the connecting rods 16 are in one-to-one correspondence with the hydraulic cylinders 15, the lower ends of the connecting rods 16 are movably connected with the movable rods of the corresponding hydraulic cylinders 15, the upper parts of the mobile crane 12 are symmetrically connected with the four sliding rods 17 in one-to-one correspondence with the connecting rods 16, the inner ends of the sliding rods 17 are connected with the brake blocks 18, the upper parts of the mobile crane 12 are symmetrically connected with the four auxiliary wheels 19 in a rotating way, and the side surfaces of the auxiliary wheels 19 can be contacted with the track 11 and the auxiliary wheels 11 can roll on the side surfaces of the track 11.

The utility model provides an adjustable monorail crane protective apparatus, as shown in fig. 1-7, including sliding sleeve 2, the connecting frame 3, the cylinder 4, connecting spring 5, guide frame 6, sliding seat 7, speed bump 8, screw rod 9 and movable rod 10, the symmetry slip is connected with four sliding sleeve 2 around moving crane 12 middle part, sliding sleeve 2 inner all is connected with connecting frame 3, connecting frame 3 is located track 11's front and back both sides respectively, all rotate in connecting frame 3 and be connected with a plurality of cylinders 4, cylinder 4 all contacts with track 11 side, sliding sleeve 2 outside all overlaps connecting spring 5, connecting spring 5's both ends are connected with moving crane 12 and connecting frame 3 respectively, moving crane 12 inner bottom bilateral symmetry is connected with two sets of guide frame 6, the quantity of every guide frame 6 of group is four, all slide seat 7 is connected with between four guide frames 6 of same set, sliding seat 7 is located track 11 below, sliding seat 7 bottom middle all is equipped with the arch, bellied longitudinal section is trapezoidal, sliding seat 7 top 8 all is connected with a plurality of cylinders 4, the inner 10 and the screw rod 10 is connected with the corresponding to the inner of moving crane 10, all slide seat 10 and the inner side of moving crane 10 of moving crane is connected with the corresponding to moving screw rod 10.

The driving motor 13 drives the driving wheel 14 to rotate, the driving wheel 14 can roll on the track 11, so that the mobile crane 12 can move along the track 11, and the mobile crane 12 can drive the auxiliary wheel 19 to roll on the track 11, thereby assisting the mobile crane 12 to move and improving the stability of the mobile crane 12; when the mobile crane 12 needs to be controlled to stop moving, the driving motor 13 needs to be closed firstly, then the connecting rod 16 is driven to rotate through the hydraulic cylinder 15, the connecting rod 16 can push the sliding rod 17 to move towards one side close to the track 11, the sliding rod 17 can drive the brake block 18 to move towards one side close to the track 11, the brake block 18 is in contact with the side face of the track 11, and the mobile crane 12 can move at a lower and lower speed until stopping under the action of friction force between the brake block 18 and the track 11, so that the purpose of braking is achieved; when the monorail crane body 1 is required to be used for hoisting materials, the materials can be hung below the movable crane 12, then the materials can be driven to move through the movement of the movable crane 12, the roller 4 can roll on the side face of the track 11, so that the movement of the movable crane 12 cannot be influenced, when the movable crane 12 moves to a turning position on the track 11, the movable crane 12 deflects due to centrifugal force generated by inertia of the materials, the track 11 can squeeze the roller 4 close to the inner side of a curve to move outwards, so that the corresponding connecting frame 3 and the sliding sleeve 2 are driven to move outwards relative to the movable crane 12, the corresponding connecting spring 5 can be compressed, the sliding sleeve 2 can drive the screw 9 on the sliding sleeve to move outwards, when the screw 9 is contacted with the movable rod 10, the movable rod 10 can be extruded to move outwards, the inclined face at the inner end of the movable rod 10 can be extruded to upwards move the protrusion on the sliding seat 7, the sliding seat 7 moves upwards, the sliding seat 7 can drive the speed reducing plate 8 to move upwards to contact with the track 11, the moving speed of the mobile crane 12 can be slowed down through the friction force between the speed reducing plate 8 and the track 11, so that safety accidents can be prevented, the track 11 can be prevented from being pressed too much to cause damage, when the mobile crane 12 is far away from the turning position on the track 11, the connecting spring 5 can restore to the original state, the corresponding connecting frame 3, the sliding sleeve 2 and the roller 4 are driven to move inwards to reset, the sliding sleeve 2 can drive the screw 9 on the sliding sleeve to move inwards to reset, the screw 9 is separated from the mobile rod 10, the sliding seat 7 moves downwards to reset under the action of gravity, the speed reducing plate 8 is driven to move downwards to separate from the track 11, the protrusion on the sliding seat 7 can squeeze the inclined surface at the inner end of the mobile rod 10 to reset the mobile rod 10, the mobile crane 12 can then be accelerated to an initial speed; meanwhile, the screw rod 9 can be rotated forwards and backwards through different weights of materials, so that the screw rod 9 moves forwards and backwards, and the initial position of the screw rod 9 is adjusted, so that the mobile crane 12 can be controlled to automatically decelerate at a proper time point; examples: when the weight of the material is heavy, the screw rod 9 can be rotated, so that the screw rod 9 moves outwards to be close to the movable rod 10, when the movable crane 12 slightly deflects, the screw rod 9 contacts with the movable rod 10 to drive the speed reducing plate 8 to move upwards to contact with the track 11, and the movable crane 12 can be accelerated to reduce the speed in advance, so that the speed reducing time of the movable crane 12 can be adjusted.

As shown in fig. 8-11, the brake mechanism further comprises a brake disc 111, a mounting block 112, a fixed plate 113, a sliding plate 114, a piston 115, a moving plate 116, clamping plates 117 and a return spring 118, wherein the auxiliary wheel 19 is connected with the brake disc 111, the upper part of the mobile crane 12 is symmetrically connected with four mounting blocks 112, the bottom of the sliding rod 17 is connected with the fixed plate 113, the outer sides of the upper parts of the mounting blocks 112 are respectively connected with the sliding plates 114 in a sliding manner, the sliding plates 114 are respectively corresponding to the fixed plates 113 one by one, the fixed plates 113 move inwards to be contacted with the sliding plates 114, the inner sides of the upper parts of the mounting blocks 112 are respectively connected with the pistons 115, the sliding plates 114 move inwards to be contacted with the pistons 115, cavities are respectively formed in the front side and the rear side of the inner sides of the mounting blocks 112, the two cavities are respectively communicated through the channels, the moving plates 116 are respectively positioned on the front side and the rear side of the braking disc 111, one sides of the moving plates 116 respectively close to each other are respectively connected with the clamping plates 117, and the moving plates 116 are respectively connected with the return springs 118.

Initially, a certain amount of hydraulic oil is stored in the cavity, when the mobile crane 12 moves on the track 11, the auxiliary wheel 19 can be driven to roll on the track 11, and the auxiliary wheel 19 can drive the brake disc 111 to rotate; when the sliding rod 17 moves to one side close to the track 11, the braking block 18 can be driven to move to contact with the side surface of the track 11 so as to brake the mobile crane 12, meanwhile, the sliding rod 17 can drive the fixed plate 113 to move to one side close to the sliding plate 114, when the fixed plate 113 contacts with the sliding plate 114, the sliding plate 114 can be pushed to move to one side close to the piston 115, when the sliding plate 114 contacts with the piston 115, the piston 115 can be extruded to move to one side close to the track 11, the piston 115 stretches into the cavity, the piston 115 can extrude hydraulic oil in the cavity, the hydraulic oil can extrude the moving plate 116 to move to the inner side, the return spring 118 stretches, the moving plate 116 can drive the clamping plate 117 to move to the inner side to contact with the brake disc 111 so that the clamping plate 117 clamps the brake disc 111, and the friction force between the clamping plate 117 and the brake disc 111 can slow down until stopping, so that the auxiliary wheel 19 can slow down until stopping, and the mobile crane 12 can be assisted to brake.

As shown in fig. 12-15, the dust removing device further comprises a dust removing mechanism, the dust removing mechanism comprises a collecting box 131, fixing rods 132, hollow sleeves 133, connecting pipes 134, air pumps 135, filter plates 136, sliding support rods 137, scraping plates 138 and compression springs 139, wherein the two collecting boxes 131 are symmetrically connected left and right at the lower part of the mobile crane 12, four fixing rods 132 are symmetrically connected left and right at the lower part of the mobile crane 12, the hollow sleeves 133 are respectively connected to one ends of the fixing rods 132, which are close to the rails 11, connecting pipes 134 are respectively communicated between the hollow sleeves 133 and the adjacent collecting boxes 131, the air outlets of the air pumps 135 are respectively communicated with the outside of the collecting boxes 131, the filter plates 136 are respectively connected to the front side and the rear side of the air pumps 135 in a front-rear symmetrical manner, the scraping plates 138 are respectively arranged between the two sliding support rods 137, the scraping plates 138 can slide in the hollow sleeves 133, and the two compression springs 139 are respectively connected between the sliding support rods 137 and the adjacent hollow sleeves 133.

Initially, the compression spring 139 is in a compressed state, and the scraper 138 can be always clung to the surface of the track 11 under the action of the elasticity of the compression spring 139; when the mobile crane 12 moves leftwards on the track 11, the whole dust removing mechanism can be driven to synchronously move leftwards, at the moment, the scraping plate 138 can move to the rightmost side in the hollow sleeve 133 due to the inertia effect, then the scraping plate 138 can scrape dust adhered to the surface of the track 11, meanwhile, air in the collecting box 131 can be discharged through the sucking pump 135, the collecting box 131 and the connecting pipe 134 can be in a negative pressure state, suction force is generated at the hollow sleeve 133, accordingly, dust scraped by the scraping plate 138 can be sucked into the collecting box 131, the filter plate 136 can filter dust entering the collecting box 131, dust is stored on the front side and the rear side in the collecting box 131, dust is prevented from adhering to the sucking pump 135, and similarly, when the mobile crane 12 moves rightwards on the track 11, the scraping plate 138 can move leftmost side in the hollow sleeve 133 due to the inertia effect, and then the scraping plate 138 can scrape dust adhered to the surface of the track 11, so that the dust can be collected into the collecting box 131, the surface of the track 11 can be cleaned automatically, and when the brake pad 18 moves to the side surface of the track 11 to contact with the track 11, and the brake pad 18 can be ensured.

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

Claims (10)

1. The utility model provides an adjustable monorail crane protection equipment, a serial communication port, including sliding sleeve (2), connecting frame (3), connecting spring (5), leading truck (6), sliding seat (7), reducing gear (8), screw rod (9) and movable rod (10), symmetrical sliding connection has sliding sleeve (2) that can slide back and forth on mobile crane (12), connecting frame (3) and sliding sleeve (2) end connection, when so that mobile crane (12) take place the skew, connecting frame (3) is pressed and can take place back and forth sliding, in order to drive sliding sleeve (2) synchronous slip, connecting spring (5) connect mobile crane (12) and connecting frame (3), in order to make connecting frame (3) elastic return, symmetrically connect with two sets of leading truck (6) on mobile crane (12), sliding seat (7) and leading truck (6) sliding connection and can slide from top to bottom, reducing gear (8) are connected with sliding seat (7) so that reducing gear (8) moves up and down with sliding seat (7) and contacts with track (11), reducing gear (8) carries out sliding screw rod (9) through frictional force to adjust sliding sleeve (10) and can slide back and movable crane (12) by many, the moving rods (10) are in one-to-one correspondence with the screw rods (9), and the screw rods (9) move outwards to press the moving rods (10) to move outwards so as to drive the sliding seat (7) to move upwards.

2. An adjustable monorail crane protection device according to claim 1, characterized in that the middle of the bottom of the sliding seat (7) is provided with protrusions, and the inner ends of the moving rods (10) are provided with inclined surfaces, wherein the inclined surfaces are contacted with the surfaces of the protrusions, so that the moving rods (10) move outwards to press the protrusions to move upwards.

3. An adjustable monorail crane protection device according to claim 2, wherein said protuberance has a trapezoidal longitudinal cross-section.

4. An adjustable monorail crane protection device according to claim 1, further comprising rollers (4), wherein a plurality of rollers (4) contacting the side surfaces of the rail (11) are rotatably connected in the connecting frame (3) to reduce friction between the connecting frame (3) and the rail (11).

5. An adjustable monorail crane protection device according to claim 1, further comprising a brake mechanism, wherein the brake mechanism comprises a brake disc (111), a mounting block (112), a movable plate (116), a clamping plate (117), a return spring (118) and a driving component, the brake disc (111) is connected with the auxiliary wheel (19) so that the brake disc (111) can synchronously rotate along with the auxiliary wheel (19), the mounting block (112) which corresponds to the brake disc (111) one by one is symmetrically connected to the movable crane (12), two cavities and two channels are symmetrically arranged in the mounting block (112), one ends of the two cavities far away from each other are communicated through the channels, the movable plate (116) which can slide back and forth is connected in the cavities, the clamping plate (117) is connected with the movable plate (116), the clamping plate (117) can clamp the brake disc (111) along with the movement of the movable plate (116) to brake the auxiliary wheel (19), the return spring (118) is connected with the movable plate (116) and the mounting block (112) so that the movable plate (116) can elastically return the movable plate (116) to move towards the inner side, and the driving component is used for driving the movable plate (116) to move towards the inner side.

6. An adjustable monorail crane protection device according to claim 5, wherein the driving assembly comprises a fixed plate (113), a sliding plate (114) and a piston (115), the fixed plate (113) is connected to the sliding rod (17) of the monorail crane body (1) so that the fixed plate (113) can move forward and backward synchronously with the sliding rod (17), the sliding plate (114) is slidably connected with the mounting block (112) and can slide forward and backward, the sliding plate (114) corresponds to the fixed plate (113), the fixed plate (113) moves inwards and contacts with the sliding plate (114) to press the sliding plate (114) to move inwards, the piston (115) is slidably connected with the mounting block (112) and can slide forward and backward, and hydraulic oil in the cavity can be pressed when the piston (115) moves to a side close to the track (11) so that the hydraulic oil can push the moving plate (116) to move inwards.

7. An adjustable monorail crane protection device according to claim 1, further comprising a dust removing mechanism, wherein the dust removing mechanism comprises a collecting box (131), a fixing rod (132), a hollow sleeve (133), a connecting pipe (134) and an air pump (135), the collecting box (131) and the fixing rod (132) are respectively connected to the movable crane (12), so that the collecting box (131) and the fixing rod (132) can synchronously move along with the movable crane (12), the hollow sleeve (133) is connected with the fixing rod (132), the connecting pipe (134) is communicated with the hollow sleeve (133) and the collecting box (131), the air pump (135) is connected in the collecting box (131), the air outlet of the air pump (135) is communicated with the outside of the collecting box (131), and air in the collecting box (131) can be discharged through the air pump (135), so that suction force can be generated at the position of the hollow sleeve (133) to pump dust adhered on the surface of the track (11).

8. An adjustable monorail crane protection device according to claim 7, characterized in that the dust removing mechanism further comprises filter plates (136), the filter plates (136) are symmetrically connected in the collecting box (131), and the filter plates (136) are respectively positioned at two sides of the air extracting pump (135) so as to filter dust in the collecting box (131).

9. An adjustable monorail crane protection device according to claim 7, characterized in that the dust removing means further comprises scrapers (138), wherein the hollow sleeve (133) is provided with scrapers (138), and wherein the scrapers (138) are slidable in the hollow sleeve (133) for scraping dust from the surface of the rail (11).

10. An adjustable monorail crane protection device according to claim 9, characterized in that the dust removing mechanism further comprises a sliding support rod (137) and a compression spring (139), wherein two sliding support rods (137) are symmetrically and slidably connected in the hollow sleeve (133), the scraping plate (138) is movably connected with the sliding support rod (137), and the compression spring (139) is connected with the sliding support rod (137) and the hollow sleeve (133) so as to press the sliding support rod (137) to enable the scraping plate (138) to be tightly attached to the surface of the track (11).