CN113026838A - Foundation pit mud stone conveying device - Google Patents

Abstract

The application relates to a foundation ditch mud stone conveyor, include the forklift and set up the scraper bowl on the forklift, the opening part of scraper bowl be provided with scraper bowl opening assorted apron, be provided with actuating mechanism on the scraper bowl, actuating mechanism and cover connection, actuating mechanism is used for the upset of drive apron, so that the apron lid closes the opening part at the scraper bowl. This application has the mud stone that makes to be located the scraper bowl and is difficult for the raise dust and fall the material at the in-process that transports, reaches the effect of the purpose of environmental protection.

Description

Foundation pit mud stone conveying device

Technical Field

The application relates to the technical field of municipal works, especially, relate to a foundation ditch mud stone conveyor.

Background

At present, a foundation pit is an earth pit excavated at a foundation design position according to the base elevation and the base plane size. Before excavation, an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site, and waterproof drainage work is performed. The persons with low excavation depth can use the method of putting side slope to make the earth slope stable, and the size of the slope is determined according to the relevant construction project.

At present in the process of excavation foundation ditch, because the existence in cement ground, can produce more earth and stone at the in-process of excavation, generally to the processing of these earth and stone be through the scraper bowl of forklift with these earth and stone transport the car hopper of mud head car on, transport suitable place through mud head car at last and dispose these earth and stone.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: in the process that the bucket of the forklift transports the mudstone to the hopper of the mud head car, the bucket is provided with an upper opening, so that the mudstone in the bucket is easy to raise dust and fall off in the transporting process, and further improvement is needed.

Disclosure of Invention

In order to make the mud stone that is located the scraper bowl difficult raise dust and fall the material at the in-process of transporting, reach the purpose of environmental protection, this application provides a foundation ditch mud stone conveyor.

The application provides a foundation ditch mud stone conveyor adopts following technical scheme:

the utility model provides a foundation ditch mud stone conveyor, includes the forklift and sets up the scraper bowl on the forklift, the opening part of scraper bowl be provided with scraper bowl opening assorted apron, be provided with actuating mechanism on the scraper bowl, actuating mechanism and cover connection, actuating mechanism is used for the upset of drive apron, so that the apron lid closes the opening part at the scraper bowl.

Through adopting above-mentioned technical scheme, after the forklift shovels the mud stone into the scraper bowl, start actuating mechanism, actuating mechanism drive apron upset to when fitting the apron lid in the opening part of scraper bowl, make the mud stone that is located the scraper bowl difficult raise dust and fall the material at the in-process that transports.

Optionally, the driving mechanism includes a first mounting plate and a second mounting plate respectively disposed on two inner end walls of the bucket, a first connecting member disposed on the first mounting plate and slidably connected to the first mounting plate, a second connecting member disposed on the second mounting plate and slidably connected to the second mounting plate, a driving member disposed on an outer end wall of the bucket and located at a side of the first mounting plate opposite to the second mounting plate, and a linkage assembly disposed between the first mounting plate and the second mounting plate and connected to the first connecting member and the second connecting member, the first mounting plate and the second mounting plate are disposed opposite to each other, the first mounting plate and the second mounting plate are both provided with guide holes corresponding in position, an output shaft of the driving member sequentially passes through the bucket and the first mounting plate to be connected to the linkage assembly, the same ends of the first connecting member and the second connecting member are both fixedly connected to one side of the cover plate facing the opening of the bucket, the linkage assembly is used for linking the first connecting piece and the second connecting piece so that the first connecting piece and the second connecting piece can slide along the track of the guide hole.

Through adopting above-mentioned technical scheme, first connecting piece and second connecting piece are connected the apron, under the drive of drive assembly, the linkage of linkage subassembly and the guide effect of guiding hole for the apron can be smooth and easy the lid fit the opening part of scraper bowl.

Optionally, the linkage assembly comprises a driving connecting arm, a driven connecting arm and a connecting rod, the driving connecting arm is located between the first mounting plate and the driven connecting arm, the driving connecting arm is fixedly sleeved on the output shaft of the driving part, the driving connecting arm is back to one side of the first mounting plate and located at one end of the driving connecting arm away from the output shaft of the driving part, the driven connecting arm is sleeved on the connecting shaft, the driven connecting arm is rotatably connected with the connecting shaft, the connecting rod is arranged between the first connecting piece and the second connecting piece, one end of the first connecting piece away from the cover plate and one end of the second connecting piece away from the cover plate are both sleeved on the outer peripheral surface of the connecting rod, the first connecting piece and the second connecting piece are both rotatably connected with the connecting rod, one end of the driven connecting arm away from, and the driven connecting arm is rotatably connected with the connecting rod, the two opposite ends of the connecting rod respectively extend onto the first mounting plate and the second mounting plate, and the two opposite ends of the connecting rod are respectively connected with the two guide holes in a sliding manner.

Through adopting above-mentioned technical scheme, the setting of linkage subassembly is used for linkage first connecting piece and second connecting piece to make first connecting piece and second connecting piece slide along the orbit of guiding hole.

Optionally, the guiding hole is including sliding hole and arc hole, the vertical setting in sliding hole, the one end in arc hole and the one side intercommunication of sliding hole back to the forklift, just the one end orientation that sliding hole was kept away from to the arc hole sets up, the department of buckling of first connecting piece rotates and is connected with the first axle that slides, the first axle that slides with the sliding hole on the first mounting panel and is connected, the department of buckling of second connecting piece rotates and is connected with the second axle that slides, the second slides the axle and slides with the sliding hole on the second mounting panel and be connected, the tip of connecting rod slides with the arc hole that the position corresponds and is connected.

Through adopting above-mentioned technical scheme, the setting of guiding hole for first connecting piece and second connecting piece can slide according to specific orbit, thereby reach the purpose of opening or closing the scraper bowl opening part.

Optionally, a plurality of rectangular holes that are parallel to each other have been seted up on the apron, the length direction in rectangular hole is unanimous with the length direction of apron, but just be located the downthehole adjustment mechanism who installs automatically flexible, be used for the rectangular hole of closing cap on the apron, adjustment mechanism is used for sieving the mud stone.

Through adopting above-mentioned technical scheme, a plurality of rectangular holes and adjustment mechanism's setting is favorable to the screening of mud stone more.

Optionally, the adjusting mechanism includes a pushing part mounted on one side of the cover plate opposite to the connecting rod through a vertical plate, and a telescopic plate disposed on the elongated hole and connected to the pushing part, the telescopic plate includes a plurality of sliding plates sequentially arranged from top to bottom, adjacent sliding plates are connected in a sliding manner, the lowest sliding plate is horizontally mounted in the elongated hole, a fixed block is mounted on the top surface of the uppermost sliding plate, and the tail end of a piston rod of the pushing part is fixedly connected to one side of the fixed block facing the vertical plate.

Through adopting above-mentioned technical scheme, adjustment mechanism's setting is used for controlling opening and close of rectangular hole to be favorable to the screening of mud stone.

Optionally, a sliding groove is formed in the top surface of the sliding plate, an opening is formed in one end, away from the vertical plate, of the sliding groove, a sliding block is formed in the bottom surface of the sliding plate, the sliding block is of an inverted T shape and is matched with the sliding groove, and the sliding block on the sliding plate is connected with the sliding groove on the sliding plate in a sliding mode.

Through adopting above-mentioned technical scheme, the setting of slider and spout plays the effect of direction for the connection of sliding between the adjacent slide board.

Optionally, each spacing subassembly that is used for spacing slider is all installed to the opening part of spout, spacing subassembly is including articulating and keeping away from riser one end and being located the stopper of the opening part of sliding plate and the locking piece that is used for locking the stopper in sliding plate, the locking piece is including installing in sliding plate and keeping away from riser one end and keeping away from the relative locking lever of articulated department of stopper and keeping away from the locking block that sliding plate one end is rotated and is connected with the locking block, set up the locking hole corresponding with the locking block position on the stopper, locking block and locking hole all set up to the rectangle, just the cross sectional area of locking block is less than the cross sectional area in locking hole, work as when locking lever and locking block pass the locking hole, one side and the stopper butt that the locking block is close to.

Through adopting above-mentioned technical scheme, the setting of spacing subassembly is used for spacing slider to the condition that reduces the slider and follow the interior roll-off of spout takes place.

Optionally, the adjacent pushing members are arranged in a staggered manner, and the piston rods of the adjacent pushing members are arranged oppositely.

Through adopting above-mentioned technical scheme, adjacent impeller dislocation set for earth in the scraper bowl can be more fully screened out.

Optionally, a protective cover for protecting the driving mechanism is installed in the bucket.

Through adopting above-mentioned technical scheme, the setting of safety cover is used for protecting actuating mechanism, effectively reduces the mud stone and influences the condition emergence that actuating mechanism normally worked.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the forklift shovels the mudstone into the bucket, the driving mechanism is started, and the driving mechanism drives the cover plate to turn over, so that when the cover plate covers the opening of the bucket, the mudstone in the bucket is not easy to raise dust and fall during the conveying process;

2. the first connecting piece and the second connecting piece are connected with the cover plate, and under the driving action of the driving assembly, the linkage of the linkage assembly and the guiding action of the guide hole, the cover plate can smoothly cover the opening of the bucket.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic structural view of the bucket, the cover plate, and the drive mechanism of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

FIG. 4 is a schematic view of another perspective of the bucket, cover plate and drive mechanism of the present application.

Fig. 5 is a partially enlarged schematic view of a portion B in fig. 4.

Fig. 6 is a partially enlarged schematic view of a portion C in fig. 4.

Fig. 7 is a schematic structural view of the bucket, the cover plate, and the adjustment mechanism of the present application.

Fig. 8 is a partially enlarged schematic view of a portion D in fig. 7.

Description of reference numerals: 1. a forklift; 11. a bucket; 2. a cover plate; 21. a strip hole; 22. a vertical plate; 3. a drive mechanism; 31. a first mounting plate; 32. a second mounting plate; 321. a guide hole; 322. a sliding hole; 323. an arc-shaped hole; 33. a first connecting member; 331. a first slip axis; 34. a second connecting member; 341. a second slip axis; 35. a drive member; 36. a linkage assembly; 361. an active connecting arm; 3611. a connecting shaft; 362. a driven connecting arm; 363. a connecting rod; 4. an adjustment mechanism; 41. a pusher member; 42. a retractable plate; 421. a slide plate; 422. a first slide plate; 4221. a fixed block; 423. a second slide plate; 4231. a chute; 424. a third slide plate; 5. a limiting component; 51. a limiting block; 511. a locking hole; 52. a locking member; 521. a locking lever; 522. and locking the block.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses foundation ditch mud stone conveyor. Referring to fig. 1 and 2, the forklift comprises a forklift 1 and a bucket 11 arranged on the forklift 1, wherein a cover plate 2 is arranged at an opening of the bucket 11, and the cover plate 2 is matched with the opening of the bucket 11; the bucket 11 is provided with a driving mechanism 3, the driving mechanism 3 is connected with the cover plate 2, and the driving mechanism 3 is used for driving the cover plate 2 to turn over so that the cover plate 2 covers the opening of the bucket 11. Meanwhile, in order to protect the driving mechanism 3 and reduce the influence of mud stones in the bucket 11 on the normal operation of the driving mechanism 3, a protective cover for protecting the driving mechanism 3 is installed in the bucket 11.

Referring to fig. 3 and 5, the driving mechanism 3 (see fig. 4) includes a first mounting plate 31 and a second mounting plate 32; the first mounting plate 31 and the second mounting plate 32 are respectively mounted on the two opposite inner end walls of the bucket 11, and the first mounting plate 31 and the second mounting plate 32 are oppositely arranged; guiding hole 321 has all been seted up on first mounting panel 31 and the second mounting panel 32, and guiding hole 321 includes sliding hole 322 and arc hole 323, and sliding hole 322 is vertical to be set up, and the one end of arc hole 323 communicates with one side of sliding hole 322 back to forklift 1, and the one end orientation that sliding hole 322 was kept away from to arc hole 323 sets up. The sliding holes 322 on the first mounting plate 31 correspond to the sliding holes 322 on the second mounting plate 32, and the arc holes 323 on the first mounting plate 31 correspond to the arc holes 323 on the second mounting plate 32.

Referring to fig. 3 and 5, the driving mechanism 3 further includes a first link 33, a second link 34, a driving member 35, and a linkage assembly 36; the first connecting piece 33 is arranged on the first mounting plate 31, the second connecting piece 34 is arranged on the second mounting plate 32, and the first connecting piece 33 and the second connecting piece 34 are identical in shape and size; the same ends of the first connecting piece 33 and the second connecting piece 34 are fixedly connected with one side of the cover plate 2 facing the opening of the bucket 11; a first sliding shaft 331 is rotatably connected to the bent part of the first connecting piece 33, and one end of the first sliding shaft 331, which is far away from the first connecting piece 33, is connected to the sliding hole 322 on the first mounting plate 31 in a sliding manner; the bent part of the second connector 34 is rotatably connected with a second sliding shaft 341, and one end of the second sliding shaft 341 far away from the second connector 34 is connected with the sliding hole 322 on the second mounting plate 32 in a sliding manner.

Referring to fig. 3 and 5, the linkage assembly 36 is disposed between the first mounting plate 31 and the second mounting plate 32 and connected to the first connecting member 33 and the second connecting member 34, and the driving member 35 is mounted on the outer end wall of the bucket 11 and located on a side of the first mounting plate 31 opposite to the second mounting plate 32; in this embodiment, the driving member 35 is a motor, and an output shaft of the motor passes through the bucket 11 and the first mounting plate 31 in sequence to be connected with the linkage assembly 36.

Referring to fig. 3 and 5, the linkage assembly 36 includes a driving connecting arm 361, a driven connecting arm 362 and a connecting rod 363, the driving connecting arm 361 is located between the first mounting plate 31 and the driven connecting arm 362, the driving connecting arm 361 is fixedly sleeved on the output shaft of the motor, a connecting shaft 3611 is installed at one side of the driving connecting arm 361 opposite to the first mounting plate 31 and located at one end of the driving connecting arm 361 far away from the output shaft of the driving element 35, the driven connecting arm 362 is sleeved on the connecting shaft 3611, and the driven connecting arm 362 is rotatably connected with the connecting shaft 3611; the connecting rod 363 is disposed between the first connecting member 33 and the second connecting member 34, an end of the first connecting member 33 away from the cover plate 2 and an end of the second connecting member 34 away from the cover plate 2 are both sleeved on an outer peripheral surface of the connecting rod 363, and the first connecting member 33 and the second connecting member 34 are both rotatably connected to the connecting rod 363. One end of the driven connecting arm 362 far away from the connecting shaft 3611 is sleeved on the peripheral surface of the connecting rod 363, the driven connecting arm 362 is rotatably connected with the connecting rod 363, two opposite ends of the connecting rod 363 respectively extend onto the first mounting plate 31 and the second mounting plate 32, and two opposite ends of the connecting rod 363 are respectively connected with the two arc-shaped holes 323 in a sliding manner.

Therefore, after the forklift 1 shovels the mud stones into the bucket 11, and the cover plate 2 needs to be covered at the opening of the bucket 11, the motor is started, the motor drives the driving connecting arm 361 to swing downwards, so that the driven connecting arm 362 drives the connecting rod 363 to swing downwards, at this time, the connecting rod 363 slides downwards along the arc direction of the arc hole 323, and meanwhile, one ends of the first connecting piece 33 and the second connecting piece 34, which are connected with the connecting rod 363, both slide downwards, because the first connecting piece 33 takes the first sliding shaft 331 as a fulcrum, and the second connecting piece 34 takes the second sliding shaft 341 as a fulcrum, so that one end of the first connecting piece 33, which is far away from the connecting shaft 3611, swings upwards, and one end of the second connecting piece 34, which is far away from the connecting shaft 3611, swings upwards, so that; when the cover plate 2 is turned over to the horizontal direction, the connecting rod 363 slides to the connection position of the arc-shaped hole 323 and the sliding hole 322, under the continuous driving action of the motor, the connecting rod 363 slides into the sliding hole 322 and continues to slide downwards, at this time, the two opposite ends of the connecting rod 363 are respectively located on the same vertical line with the first sliding shaft 331 and the second sliding shaft 341, and the connecting rod 363 drives the first sliding shaft 331 and the second sliding shaft 341 to move downwards, so that the cover plate 2 moves downwards until the cover plate 2 covers the opening of the bucket 11.

Referring to fig. 6 and 7, in order to sieve the mud stones in the bucket 11, the cover plate 2 is provided with a plurality of parallel elongated holes 21, the length direction of the elongated holes 21 is identical to the length direction of the cover plate 2, and the cover plate 2 is provided with an adjusting mechanism 4 which is automatically retractable and used for sealing the elongated holes 21 and is located in the elongated holes 21. The adjustment mechanism 4 is used for screening mud and stones, i.e. when it is desired to screen the mud in the bucket 11 out of the bucket 11, the elongated hole 21 is opened by the adjustment assembly, completing the separation between the mud and the stones. In the present embodiment, the number of the elongated holes 21 is two.

Referring to fig. 6 and 8, the adjusting mechanism 4 includes a pushing member 41 and a telescopic plate 42; in this embodiment, the pushing element 41 is an air cylinder, the cover plate 2 is disposed on a side opposite to the connecting rod 363 and is provided with a vertical plate 22 at an end of the elongated hole 21, the air cylinder is horizontally disposed on a side of the vertical plate 22 facing the elongated hole 21, and the expansion plate 42 is disposed on the elongated hole 21 and connected to the pushing element 41.

Referring to fig. 6 and 8, the telescopic plate 42 includes a plurality of sliding plates 421 connected to each other in a sliding manner, in this embodiment, the number of the sliding plates 421 is three, and the three sliding plates 421 are respectively a first sliding plate 422, a second sliding plate 423 and a third sliding plate 424 which are sequentially arranged from top to bottom; the first sliding plate 422 is connected with the second sliding plate 423 in a sliding manner, the second sliding plate 423 is connected with the third sliding plate 424 in a sliding manner, and the third sliding plate 424 is horizontally arranged in the long hole 21 and is adjacent to the vertical plate 22. A fixing block 4221 is mounted on the top surface of the first sliding plate 422, and the tail end of a piston rod of the air cylinder is fixedly connected with one side of the fixing block 4221 facing the vertical plate 22.

Referring to fig. 6 and 8, sliding grooves 4231 are formed in the top surfaces of the second sliding plate 423 and the third sliding plate 424, one ends of the two sliding grooves 4231 far away from the vertical plate 22 are both provided with openings, and the length direction of the sliding grooves 4231 is consistent with the length direction of the strip holes 21; the slider has all been seted up on the bottom surface of first slide plate 422 and second slide plate 423, and the slider is the type of falling T, and the slider matches with the spout 4231 that the position corresponds, and the slider on the first slide plate 422 slides with spout 4231 on the second slide plate 423 to be connected, and the slider on the second slide plate 423 slides with spout 4231 on the third slide plate 424 and is connected. In order to achieve a better screening effect, the adjacent cylinders are arranged in a staggered mode, and piston rods of the adjacent cylinders are arranged oppositely.

Referring to fig. 6 and 8, a limiting assembly 5 for limiting a sliding block is mounted at an opening of each sliding slot 4231. Since the function and structure of the limiting component 5 on the second sliding plate 423 and the limiting component 5 on the third sliding plate 424 are the same, and only the installation positions are different, in this embodiment, the limiting component 5 on the third sliding plate 424 is taken as an example for explanation. The limiting component 5 includes a limiting block 51 and a locking piece 52, which are disposed at one end of the third sliding plate 424 far from the vertical plate 22 and located at an opening of the third sliding plate 424. The limiting block 51 is hinged to the end face, away from the vertical plate 22, of the third sliding plate 424, and the hinged positions of the locking piece 52 and the limiting block 51 are located at two opposite ends of the opening of the sliding groove 4231 respectively. The locking piece 52 comprises a locking rod 521 and a locking block 522, one end of the locking rod 521 is fixedly connected with the end surface of the third sliding plate 424 far away from the vertical plate 22, and one end of the locking rod 521 far away from the third sliding plate 424 is rotatably connected with the locking block 522; the limiting block 51 is provided with a locking hole 511 corresponding to the locking block 522, the locking block 522 and the locking hole 511 are both rectangular, the cross-sectional area of the locking block 522 is smaller than that of the locking hole 511, and when the locking rod 521 and the locking block 522 pass through the locking hole 511, one side of the locking block 522 close to the locking rod 521 abuts against the limiting block 51.

Accordingly, the locking block 522 is rotated such that the direction of the locking block 522 coincides with the direction of the locking hole 511, the stopper 51 is turned over such that the locking hole 511 passes through the locking block 522 and the locking lever 521, and then the locking block 522 is rotated such that the locking block 522 is misaligned with the locking hole 511, thereby locking the stopper 51 at the opening of the chute 4231.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a foundation ditch mud stone conveyor, includes forklift (1) and sets up scraper bowl (11) on forklift (1), its characterized in that: the opening part of scraper bowl (11) is provided with apron (2) with scraper bowl (11) opening assorted, be provided with actuating mechanism (3) on scraper bowl (11), actuating mechanism (3) are connected with apron (2), actuating mechanism (3) are used for driving apron (2) upset, so that apron (2) lid closes the opening part at scraper bowl (11).

2. A foundation pit mud stone conveyor as claimed in claim 1 wherein: the driving mechanism (3) comprises a first mounting plate (31) and a second mounting plate (32) which are respectively arranged on two inner end walls of the bucket (11), a first connecting piece (33) which is arranged on the first mounting plate (31) and is connected with the first mounting plate (31) in a sliding way, a second connecting piece (34) which is arranged on the second mounting plate (32) and is connected with the second mounting plate (32) in a sliding way, a driving piece (35) which is arranged on the outer end wall of the bucket (11) and is positioned on one side of the first mounting plate (31) opposite to the second mounting plate (32), and a linkage assembly (36) which is arranged between the first mounting plate (31) and the second mounting plate (32) and is connected with the first connecting piece (33) and the second connecting piece (34), wherein the first mounting plate (31) and the second mounting plate (32) are oppositely arranged, and the first mounting plate (31) and the second mounting plate (32) are respectively provided with guide holes (321) with corresponding positions, the output shaft of driving piece (35) passes scraper bowl (11) and first mounting panel (31) in proper order and is connected with linkage subassembly (36), the same end of first connecting piece (33) and second connecting piece (34) all with apron (2) towards one side fixed connection of scraper bowl (11) opening part, linkage subassembly (36) are used for linking first connecting piece (33) and second connecting piece (34), so that first connecting piece (33) and second connecting piece (34) slide along the orbit of guiding hole (321).

3. A foundation pit mud stone conveyor as claimed in claim 2 wherein: linkage subassembly (36) includes initiative linking arm (361), driven linking arm (362) and connecting rod (363), initiative linking arm (361) are located between first mounting panel (31) and driven linking arm (362), initiative linking arm (361) are fixed to be located on the output shaft of driving piece (35) with fixed cover, initiative linking arm (361) are back to one side of first mounting panel (31) and are located initiative linking arm (361) and keep away from the one end of driving piece (35) output shaft and install connecting axle (3611), driven linking arm (362) cover is located on connecting axle (3611), and driven linking arm (362) and connecting axle (3611) rotate to be connected, connecting rod (363) set up between first connecting piece (33) and second connecting piece (34), the one end that apron (2) were kept away from in first connecting piece (33) and the one end that apron (2) was kept away from in second connecting piece (34) all overlap on the outer peripheral face of connecting rod (363), just first connecting piece (33) and second connecting piece (34) all rotate with connecting rod (363) and are connected, driven linking arm (362) keep away from the one end cover of connecting axle (3611) and locate on the outer peripheral face of connecting rod (363), just driven linking arm (362) rotate with connecting rod (363) and are connected, the relative both ends of connecting rod (363) extend to respectively on first mounting panel (31) and second mounting panel (32), just the relative both ends of connecting rod (363) slide with two guiding holes (321) respectively and are connected.

4. A foundation pit mud stone conveyor as claimed in claim 3 wherein: the guiding hole (321) includes sliding hole (322) and arc hole (323), sliding hole (322) vertical setting, the one end of arc hole (323) and sliding hole (322) communicate one side of fork truck (1) back to, just sliding hole (322) is kept away from in arc hole (323) one end upwards sets up, the department of buckling of first connecting piece (33) rotates and is connected with first sliding shaft (331), sliding hole (322) on first sliding shaft (331) and the first mounting panel (31) slide and are connected, the department of buckling of second connecting piece (34) rotates and is connected with second sliding shaft (341), sliding shaft (341) slide with sliding hole (322) on second mounting panel (32) and are connected, the tip of connecting rod (363) slides with arc hole (323) that the position corresponds and is connected.

5. A foundation pit mud stone conveyor as claimed in claim 1 wherein: the mud stone screening device is characterized in that a plurality of strip holes (21) parallel to each other are formed in the cover plate (2), the length direction of the strip holes (21) is consistent with that of the cover plate (2), an adjusting mechanism (4) capable of automatically stretching and retracting and used for sealing the strip holes (21) is installed on the cover plate (2) and located in the strip holes (21), and the adjusting mechanism (4) is used for screening mud stones.

6. A foundation pit mud stone conveyor as claimed in claim 5 wherein: the adjusting mechanism (4) comprises a pushing part (41) which is arranged on one side, back to the connecting rod (363), of the cover plate (2) through a vertical plate (22) and a telescopic plate (42) which is arranged on the long-strip-shaped hole (21) and connected with the pushing part (41), the telescopic plate (42) comprises a plurality of sliding plates (421) which are sequentially arranged from top to bottom, the adjacent sliding plates (421) are connected in a sliding mode, the lowest sliding plate (421) is horizontally arranged in the long-strip-shaped hole (21), the top surface of the uppermost sliding plate (421) is provided with a fixed block (4221), and the tail end of a piston rod of the pushing part (41) is fixedly connected with one side, facing the vertical plate (22), of the fixed block (4221).

7. A foundation pit mud stone conveyor as claimed in claim 6 wherein: the top surface of the sliding plate (421) is provided with a sliding groove (4231), one end of the sliding groove (4231) far away from the vertical plate (22) is provided with an opening, the bottom surface of the sliding plate (421) is provided with a sliding block, the sliding block is of an inverted T shape and is matched with the sliding groove (4231), and the sliding block on the sliding plate (421) in the former step is connected with the sliding groove (4231) on the sliding plate (421) in the latter step in a sliding manner.

8. A foundation pit mud stone conveyor as claimed in claim 7 wherein: a limiting component (5) used for limiting the sliding block is mounted at an opening of each sliding groove (4231), each limiting component (5) comprises a limiting block (51) hinged to one end, far away from the vertical plate (22), of the sliding plate (421) and located at the opening of the sliding plate (421) and a locking piece (52) used for locking the limiting block (51), each locking piece (52) comprises a locking rod (521) mounted at one end, far away from the vertical plate (22), of the sliding plate (421) and opposite to the hinged position of the limiting block (51) and a locking block (522) rotatably connected with one end, far away from the sliding plate (421), of the locking block (522), a locking hole (511) corresponding to the locking block (522) in position is formed in each limiting block (51), each locking block (522) and each locking hole (511) are both rectangular, and the cross sectional area of each locking block (522) is smaller than that of each locking hole (511), when the locking rod (521) and the locking block (522) pass through the locking hole (511), one side, close to the locking rod (521), of the locking block (522) abuts against the limiting block (51).

9. A foundation pit mud stone conveyor as claimed in claim 6 wherein: the adjacent pushing pieces (41) are arranged in a staggered mode, and piston rods of the adjacent pushing pieces (41) are arranged oppositely.

10. A foundation pit mud stone conveyor as claimed in claim 1 wherein: and a protective cover for protecting the driving mechanism (3) is arranged in the bucket (11).

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