CN210001413U

CN210001413U - Lifting appliance and stacking machine

Info

Publication number: CN210001413U
Application number: CN201920904569.9U
Authority: CN
Inventors: 田小伟; 袁境; 刘小顺
Original assignee: Sany Marine Heavy Industry Co Ltd
Current assignee: Sany Marine Heavy Industry Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-01-31
Anticipated expiration: 2029-06-14

Abstract

The embodiment of the utility model provides an kind of hoist and fork lift truck, relate to the engineering machine tool field, the hoist includes the girder, telescopic machanism and be used for with two lock joint roof beams of waiting to transport article complex, two lock joint roof beams all with the girder along the length direction sliding fit of girder, telescopic machanism is located between two lock joint roof beams, telescopic machanism includes the mounting that links to each other with the girder and is located two slip groups of the relative both sides of mounting, two slip groups correspond with two lock joint roof beams respectively, every slip group includes along two sliders of predetermineeing direction sliding fit, sliders and mounting in every slip group are along predetermineeing direction sliding fit, another sliders in every slip group are connected with the lock joint roof beam, the position of the regulation lock joint roof beam that can be quick accurate according to the size of article during the hoist operation is in order to be in lock joint with the article cooperation, the handling is efficient.

Description

Lifting appliance and stacking machine

Technical Field

The utility model relates to an engineering machine tool field particularly, relates to kinds of hoists and fork lift truck.

Background

At present, when the engineering machinery transports articles, the opening and closing size of the lifting appliance can be controlled according to the size of the articles, so that the engineering machinery is suitable for clamping and transporting the articles with different sizes. For example, when the stacking machine is used to transfer containers, the containers have 20 feet, 30 feet and 40 feet in size, and containers of corresponding sizes can be transferred by changing the opening and closing sizes of the spreaders of the stacking machine.

Research shows that the stacking machine has the following defects in the process of transferring containers at present:

the size control precision of the lifting appliance is low, the lifting difficulty is increased, and the lifting cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing kinds of hoists, its adjustment that can be accurate to with wait to transport the size assorted position of article, and the adjustment speed is fast, improves the operating efficiency, for example.

The utility model discloses an aim at still includes, provides kinds of fork lift trucks, its transportation that can adapt to not unidimensional article, and the hoist on it can carry out quick, accurate adjustment to not unidimensional article, and the operating efficiency is high.

The embodiment of the utility model discloses a can realize like this:

an embodiment of the utility model provides an kind of hoists, the hoist includes:

the main beam, the telescopic mechanism and the two locking beams matched with an object to be transferred are arranged, the two locking beams are in sliding fit with the main beam along the length direction of the main beam, the telescopic mechanism is located between the two locking beams and comprises a fixing piece connected with the main beam and two sliding groups located on two opposite sides of the fixing piece, the two sliding groups correspond to the two locking beams respectively, each sliding group comprises two sliding pieces in sliding fit along a preset direction, sliding pieces in each sliding group are in sliding fit with the fixing piece along the preset direction, and the other sliding pieces in each sliding group are connected with the corresponding locking beams.

Optionally, the quantity of mounting is two, and two mountings all are connected with the girder, and two slip groups correspond with two mountings , and the slider of keeping away from corresponding lock joint roof beam in every slip group is along presetting direction sliding fit with the mounting that corresponds.

Optionally, the two fixing members are at least partially opposite to each other in a direction perpendicular to the predetermined direction.

Optionally, the telescopic mechanism includes th oil cylinder, a second oil cylinder, a third oil cylinder and a fourth oil cylinder, the cylinder body of the th oil cylinder is fixed pieces, the piston rod of the th oil cylinder is connected with the piston rod of the second oil cylinder to form a th sliding piece of four sliding pieces, the cylinder body of the second oil cylinder is a second sliding piece of the four sliding pieces connected with the corresponding locking beam, the cylinder body of the third oil cylinder is another fixed piece, the piston rod of the third oil cylinder is connected with the piston rod of the fourth oil cylinder to form a third sliding piece of the four sliding pieces, and the cylinder body of the fourth oil cylinder is a fourth sliding piece of the four sliding pieces connected with the corresponding locking beam.

Optionally, a piston rod of the th oil cylinder is connected with a piston rod of the second oil cylinder through a flange structure, and a piston rod of the third oil cylinder is connected with a piston rod of the fourth oil cylinder through a flange structure.

Optionally, the hanger further comprises mounting pieces and th supporting pieces, wherein the mounting pieces are fixedly connected with the main beam, the mounting pieces and the th supporting pieces are arranged at intervals along a preset direction, and the fixing pieces are connected with the mounting pieces and penetrate through the th supporting pieces.

Optionally, the spreader further includes a second supporting member, the second supporting member is fixedly connected to the main beam, and when the sliding member slides in the preset direction relative to the fixing member, the sliding member can penetrate through the second supporting member and be supported by the second supporting member.

Optionally, when the two sliding members in the sliding group slide away from the fixed member in a predetermined direction and reach a maximum stroke, the connecting positions of the two sliding members are supported on the second supporting member.

Optionally, the spreader further comprises a position sensor for detecting the position of the sliding member relative to the fixed member, and a detection point of the position sensor is located on the main beam.

The embodiment of the utility model provides a kinds of fork lift machines are still provided, the fork lift machine includes:

the machine body, the lifting appliance and the lifting appliance are arranged on the machine body.

The utility model discloses beneficial effect of hoist includes, for example:

when the distance between the two locking beams is adjusted by the telescopic mechanism, when the two sliding pieces in each sliding assembly are in the minimum stroke position, the two locking beams can lock -sized articles, when sliding pieces in each sliding group slide to the maximum stroke position, the two locking beams can lock -sized articles, when the two sliding pieces in each sliding group slide to the maximum stroke position, the two locking beams can lock -sized articles, the distance between the two locking beams is adjusted by controlling the maximum stroke position and the minimum stroke position of each sliding piece in the telescopic mechanism, and because the positions of the maximum stroke position and the minimum stroke position are determined, the corresponding position of the sliding piece is required to be adjusted, the maximum stroke position and the minimum stroke position of the sliding piece are required to be adjusted, the maximum stroke position of the sliding piece is required to be adjusted, the maximum stroke position and the minimum stroke position of the sliding piece are required to be adjusted, and the lifting operation efficiency is reduced.

The stacker provided by the embodiment comprises the lifting appliance, and has all the advantages of the lifting appliance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a spreader provided in this embodiment;

fig. 2 is a schematic structural diagram of the spreader provided by the embodiment for lifting a 20ft container;

fig. 3 is a schematic structural diagram of the spreader provided by the embodiment for lifting a 30ft container;

fig. 4 is a schematic structural diagram of the spreader provided by the embodiment for lifting 40ft containers;

fig. 5 is a schematic structural diagram of the telescopic mechanism provided in this embodiment;

fig. 6 is a schematic structural diagram of a modified structure of the telescopic mechanism provided in this embodiment;

fig. 7 is a schematic cross-sectional view of the fixing member and sliding group of the telescopic mechanism provided in this embodiment;

fig. 8 is a schematic cross-sectional view of another fixing member and another sliding member of the telescopic mechanism of this embodiment;

fig. 9 is a schematic structural diagram corresponding to fig. 8.

The drawing shows 10-sling, 100-main beam, 200-telescoping mechanism, 210-fixed piece, 220-sliding group, 221-sliding piece, 222- sliding piece, 2221-flange structure, 223-second sliding piece, 224-third sliding piece, 225-fourth sliding piece, 230-two-way oil cylinder, 231- cylinder body, 232- piston rod, 233-second piston rod, 240- -one-way oil cylinder, 241-second cylinder body, 242-third piston rod, 250-second one-way oil cylinder, 251-third cylinder body, 252-fourth piston rod, 260- oil cylinder, 261-cylinder body a, 262-piston rod a, 270-second oil cylinder, 271-cylinder body b, 272-piston rod b, 280-third oil cylinder, 281-cylinder body c, 282-piston rod c, 290-fourth oil cylinder, 291-cylinder body d, 292-piston rod d, 300-locking beam, 310-insertion part, 320-locking part, 400- supporting piece, 600-second supporting piece.

Detailed Description

To further clarify the objects, features and advantages of embodiments of the present invention, a more complete description of embodiments of the present invention is now provided by reference to the drawings which form a part hereof, and it is to be understood that there is described herein a partial embodiment of rather than a complete embodiment thereof.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once a item is defined in figures, it need not be further defined and explained by in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Moreover, the appearances of the terms "," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

In the following embodiments, unless otherwise specified, the predetermined direction is parallel to the length direction of the main beam, and is the direction ab in the drawings. Obviously, in other embodiments, the predetermined direction may form an angle with the length direction of the main beam.

This embodiment provides spreaders suitable for use in stacking machines, and particularly suitable for use in stacking containers, for example, empty containers are lifted and placed in a stacked arrangement.

Referring to fig. 1, the spreader 10 provided in this embodiment includes a main beam 100, a telescoping mechanism 200, and two locking beams 300 for cooperating with an object to be transported, where the two locking beams 300 are both slidably engaged with the main beam 100 along a length direction of the main beam 100, the telescoping mechanism 200 is located between the two locking beams 300, the telescoping mechanism 200 includes a fixed member 210 connected with the main beam 100 and two sliding groups 220 located at two opposite sides of the fixed member 210, the two sliding groups 220 respectively correspond to the two locking beams 300, each sliding group 220 includes two sliding members 221 slidably engaged along a predetermined direction, sliding members 221 in each sliding group 220 are slidably engaged with the fixed member 210 along the predetermined direction, and another sliding members 221 in each sliding group 220 are connected with the locking beams 300.

In the present embodiment, for convenience of description, four sliders 221 of the two slider groups 220 are respectively -th slider 222, second slider 223, third slider 224 and fourth slider 225, the -th slider 222 and the second slider 223 are groups and are slidably engaged along a predetermined direction, the -th slider 222 and the fixed member 210 are slidably engaged along a predetermined direction, in other words, the -th slider 222 is located between the second slider 223 and the fixed member 210 connected thereto, the end of the second slider 223 far from the -th slider 222 is connected to latching beams 300, the third slider 224 and the fourth slider 225 are groups and are slidably engaged along a predetermined direction, the third slider 224 and the fixed member 210 are slidably engaged along a predetermined direction, in other words, the third slider 224 is located between the fourth slider 225 and the fixed member 210 connected thereto, and the end of the fourth slider 225 far from the third slider 224 is connected to the latching beams 300.

In the spreader 10 provided in this embodiment, the two latching beams 300 are connected to the main beam 100 through the telescopic mechanism 200, the two latching beams 300 are located at two ends of the length direction of the main beam 100, the length direction of the latching beams 300 is vertical and perpendicular to the length direction of the main beam 100, and the telescopic mechanism 200 drives the corresponding latching beams 300 to extend or shorten relative to the main beam 100 along the length direction of the main beam 100, so as to adjust the distance between the two latching beams 300, and further be suitable for lifting objects of different sizes. For example, in this embodiment, the spreader 10 may be used to hoist containers having dimensions of 20ft, 30ft, and 40 ft.

In particular, the distance between the two lock beams 300 is adjusted by controlling the telescoping mechanism 200 to accommodate the lifting of containers of different sizes, please refer to fig. 2, when the th slider 222 and the second slider 223 both slide to the minimum stroke position, and the third slider 224 and the fourth slider 225 both slide to the minimum stroke, the two lock beams 300 can be used to lift the container with the minimum size, i.e. the spreader 10 can be used to lift 20ft containers at this time.

Referring to fig. 3, when a 30ft container is lifted by using the spreader 10, the telescopic mechanism 200 can be controlled in various ways to adjust the two lock beams 300 to proper positions according to different stroke designs of the slide member 222, the second slide member 223, the third slide member 224 and the fourth slide member 225. for example, the adjustment mode can be used for lifting the 30ft container when the slide member 222 slides to the minimum stroke and the second slide member 223 slides to the maximum stroke, and the third slide member 224 slides to the minimum stroke and the fourth slide member 225 slides to the maximum stroke, and the second adjustment mode can be used for lifting the 30ft container when the slide member 222 slides to the maximum stroke and the second slide member 223 slides to the minimum stroke, and the third slide member 224 slides to the maximum stroke and the fourth slide member 225 slides to the minimum stroke, and obviously, the spreader 10 can also be used for lifting the 30ft container when the telescopic mechanism 200 provided by the present embodiment is used for lifting the 30ft container, and there are not listed in , and the adjustment mode is preferably used for safely bending moment that the telescopic mechanism is not easily bent.

Referring to fig. 4, when the th slide 222, the second slide 223, the third slide 224 and the fourth slide 225 all slide to the maximum stroke, the two latching beams 300 can be used to latch a 40ft container, i.e. the spreader 10 can be used to swing a 40ft container.

In the spreader 10 provided by this embodiment, the distance between the two lock beams 300 is adjusted by adjusting the position of each sliding member 221 in the telescoping mechanism 200 at the maximum stroke or the minimum stroke, because the maximum stroke and the minimum stroke of the sliding member 221 are determined, and the positions of the sliding members 221 at the maximum stroke and the minimum stroke are also determined, when an object of a corresponding size needs to be hoisted, the telescoping mechanism 200 is directly operated to make the corresponding sliding member 221 at the maximum stroke or the minimum stroke, and when the sliding member 221 slides to the minimum stroke or the maximum stroke, the sliding member 221 stops sliding, and the position where the sliding member 221 stops is the required position. The sliding position of the sliding part 221 is controlled by a position sensor, and the position of the telescopic part is inaccurate due to the error of the detection sensitivity of the sensor, so that the distance between the two locking beams 300 is inaccurate, and finally the positions of the two locking beams 300 are not matched with the to-be-assembled position of the to-be-lifted object, so that extra adjustment time is needed to match the two locking beams, the lifting time is prolonged, and the lifting efficiency is reduced. In the spreader 10 provided by the embodiment, the position of the lock beam 300 is determined by the maximum stroke position and the minimum stroke position of the sliding member 221, and the positioning is fast, accurate, reliable and high in operation efficiency.

Optionally, the telescopic mechanism 200 includes a linear telescopic structure, for example, the linear telescopic structure may be a hydraulic cylinder, an air cylinder or other structures capable of realizing linear telescopic motion. In this embodiment, a linear telescopic structure is exemplified as the hydraulic cylinder.

Referring to fig. 5, the telescoping mechanism 200 includes two-way cylinders 230, a one-way cylinder 240 and a second one-way cylinder 250, the two-way cylinder 230 includes a 0 th cylinder 231, a 1 th cylinder rod 232 and a second cylinder rod 233, the th cylinder rod 232 and the second cylinder rod 233 are located at both ends of the length direction of the cylinder 231 and are in sliding fit with the cylinder 231, the one-way cylinder 240 includes a second cylinder 241 and a third cylinder rod 242 in sliding fit with the second cylinder 241, the second one-way cylinder 250 includes a third cylinder 251 and a fourth cylinder rod 251 in sliding fit with the third cylinder 251, the first cylinder 231 is fixed on the main beam 100, the third cylinder 231 is a fixing member 210, the second cylinder rod 232 is connected with the third cylinder rod 242 to form a sliding member 222, the second cylinder 241 is a second sliding member 223, the second cylinder rod 233 is connected with the fourth cylinder rod 252 to form a third sliding member 224, and the third cylinder 251 is a fourth sliding member 225.

, the piston rod 232 is connected with the third piston rod 242 through a flange structure 2221, and the second piston rod 233 is connected with the fourth piston rod 252 through the flange structure 2221. the flange structure 2221 is simple and reliable, and is convenient to detach and more convenient for subsequent maintenance and replacement operations.

Referring to fig. 6, it should be noted that, in other embodiments, the th piston rod 232 may be further connected to the second cylinder 241 of the th one-way cylinder 240 to form the th sliding member 222, the third piston rod 242 is the second sliding member 223, the second piston rod 233 may be connected to the third cylinder 251 of the second one-way cylinder 250 to form the third sliding member 224, and the fourth piston rod 252 is the fourth sliding member 225.

Referring to fig. 7 and 8, in other embodiments, the telescopic mechanism 200 includes a cylinder 260, a second cylinder 270, a third cylinder 280 and a fourth cylinder 290, the first cylinder 260 includes a cylinder body a261 and a piston rod a262 slidably engaged with the cylinder body a261, the second cylinder 270 includes a cylinder body b271 and a piston rod b272 slidably engaged with the cylinder body b271, the third cylinder 280 includes a cylinder body c281 and a piston rod c282 slidably engaged with the cylinder body c281, the fourth cylinder 290 includes a cylinder body d291 and a piston rod d292 slidably engaged with the cylinder body d291, the cylinder body 261 a and the cylinder body c281 are both fixed 210, that is, the number of the fixed members 210 is two, the cylinder body a261 and the cylinder body c281 are both fixed on the main beam 100, and the cylinder body a261 and the cylinder body 281 c are at least partially opposed to each other in a direction perpendicular to the preset direction, so as to reduce the installation volume, the cylinder body is arranged, the cylinder body a and the cylinder body 261 c281 are arranged in parallel, the cylinder body 261 a and the cylinder body c281 are vertically spaced apart, that the cylinder body 261 a is located below the cylinder body 281 c 261, in other words, the cylinder body 261 a piston rod 272 is connected to the piston rod 223 b of the sliding member 223, the sliding member 223 b forming the third cylinder body 223 b, the piston rod 223 b.

Referring to fig. 9, at step , the piston rod a262 is connected to the piston rod b272 via a flange structure 2221, and the piston rod c282 is connected to the piston rod d292 via a flange structure 2221. the flange structure 2221 is simple and reliable, and is convenient to disassemble and facilitate subsequent maintenance and replacement operations.

In other embodiments, the piston rod a262 and the piston rod c282 may be a fixed member 210, the cylinder a261 and the piston rod b272 are connected to form the th sliding member 222, the cylinder b271 is the second sliding member 223, the cylinder c281 and the piston rod d292 are connected to form the third sliding member 224, and the cylinder d291 is the fourth sliding member 225.

Obviously, in other embodiments, the th cylinder 260, the second cylinder 270, the third cylinder 280 and the fourth cylinder 290 may be combined in other forms to form the telescopic mechanism 200, which is not illustrated in .

Optionally, the spreader 10 further comprises a mount 400, a th support 500 and a second support 600 all fixed to the main beam 100.

The mounting member 400 is a plate-shaped mounting seat, and the th cylinder 231 is fixed to the mounting seat, or the cylinders a261 and c281 are fixed to the main beam 100 by mounting seats, respectively.

Referring to fig. 4, the supporting member 500 is a plate, obviously, in other embodiments, the supporting member 500 may also be a block, etc. the 0 supporting member 500 is provided with a th positioning hole, and the th positioning hole may be, but is not limited to, a cylindrical hole, when the th cylinder 231 is provided as the fixing member 210, the th cylinder 231 is inserted into the cylindrical hole, the th supporting member 500 and the mounting member 400 are spaced apart along the axial direction of the th cylinder 231, optionally, the th supporting member 500 and the mounting member 400 are respectively provided near both ends of the th cylinder 231 in the length direction, optionally, the th cylinder 231 is externally sleeved with a positioning flange, the positioning flange is located in the cylindrical hole, when the fixing members 210 are two, that is, the cylinder a261 and the cylinder 281 c are fixing members 210 respectively, the cylinder a261 is fixed on the main beam 100 through the th mounting member 400 and the 1 st supporting member 500, the cylinder a261 is fixed on the main beam 100 through the cylindrical hole th mounting member 400, the cylindrical hole 281 is fixed between the 585 th cylinder 465 c supporting member 500 through the cylindrical hole 465 mounting member 500.

Referring to fig. 4, the second supporting members 600 are plate-shaped, in other embodiments, the second supporting members 600 may also be block-shaped, etc. the second supporting members 600 are provided with second positioning holes, which may be, but are not limited to, cylindrical holes, in this embodiment, optionally, the number of the second supporting members 600 is two, and the two second supporting members 600 correspond to the sliding members 221 of the two sliding groups 220, for example, when the telescoping mechanism 200 is adjusted to enable the spreader 10 to swing 20ft containers, the two second supporting members 600 are supported by the second sliding members 223 and the fourth sliding members 225, respectively, when the telescoping mechanism 200 is adjusted to enable the spreader 10 to swing 30ft containers, the two second supporting members 600 are supported by the sliding members 222 and the third sliding members 224, respectively, when the telescoping mechanism 200 is adjusted to enable the spreader 10 to swing 40ft containers, the two second supporting members 600 are supported by the sliding members 222 and the third sliding members 224, wherein the second supporting members 600 are supported by the sliding members 222 at the position of the flange structure 2221, and the supporting members 600 at the position where the connecting position of the connecting the second supporting members 224 is not easy to support at the position .

In this embodiment, the main beam 100 may be a rectangular parallelepiped pillar, and when the container is lifted, the main beam 100 is substantially horizontal. The main beam 100 is provided with sliding grooves at two ends in the length direction, and the sliding grooves may be groove structures with rectangular cross sections, and it should be understood that in other embodiments, the sliding grooves may also be cylindrical grooves, etc.

Referring to fig. 4, in the present embodiment, the locking beam 300 includes an insertion portion 310 and a locking portion 320, the insertion portion 310 is vertically connected to the locking portion 320, the insertion portion 310 is used for sliding-fitting with the sliding groove on the main beam 100, and the cross-sectional shape of the insertion portion 310 matches the shape of the sliding groove. The locking part 320 is provided with a twist lock for locking and matching with a lock hole on the container. When the lock beam 300 is engaged with the main beam 100, the lock portion 320 is substantially vertically disposed.

Optionally, the spreader further includes a position sensor (not shown in the drawings) for detecting whether the sliding member 221 slides to the maximum stroke or the minimum stroke, and a detection point of the position sensor is disposed on the main beam 100. In the operation process, when the sliding part 221 slides to the position of the maximum stroke or the minimum stroke, the position sensor detects the sliding part 221 and transmits a signal to the controller, and the controller can control the alarm to give an alarm to remind a worker that the sliding part 221 reaches the set position. The alarm may be a horn or a light.

The spreader 10 provided by the embodiment can accurately and rapidly adjust the telescopic mechanism 200 so that the two locking beams 300 are located at the positions corresponding to the size of the container, thereby completing the lifting operation of the container, and the operation efficiency is high.

The embodiment also provides stacking machines (not shown in the figures), which comprise a vehicle body and the spreader 10 mentioned in the above embodiment, wherein the spreader 10 is mounted on the vehicle body through a boom, the spreader 10 is used for cooperating with a corresponding container, the vehicle body is operated to move so as to drive the container to move, and the stacking operation of the container is realized by controlling the extension and the pitch angle of the boom.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

A spreader (10) of the kind , characterized in that the spreader (10) comprises:

the main beam (100), the telescoping mechanism (200) and two locking beams (300) used for being matched with an object to be transported, wherein the two locking beams (300) are in sliding fit with the main beam (100) along the length direction of the main beam (100), the telescoping mechanism (200) is located between the two locking beams (300), the telescoping mechanism (200) comprises a fixing piece (210) connected with the main beam (100) and two sliding sets (220) located on two opposite sides of the fixing piece (210), the two sliding sets (220) respectively correspond to the two locking beams (300), each sliding set (220) comprises two sliding pieces (221) in sliding fit along a preset direction, sliding pieces (221) in each sliding set (220) are in sliding fit with the fixing piece (210) along the preset direction, and the other sliding pieces (221) in each sliding set (220) are connected with the corresponding locking beams (300).
2. The spreader (10) according to claim 1, wherein:

the quantity of mounting (210) is two, two mounting (210) all with girder (100) are connected, two sliding group (220) and two mounting (210) correspond, every keep away from in sliding group (220) and correspond sliding part (221) that lock roof beam (300) and corresponding mounting (210) are followed preset direction sliding fit.
3. The spreader (10) according to claim 2, wherein:

the two fixing pieces (210) are at least partially opposite to each other along a direction perpendicular to the preset direction.
4. The spreader (10) according to claim 2, wherein:

the telescopic mechanism (200) comprises oil cylinders (260), a second oil cylinder (270), a third oil cylinder (280) and a fourth oil cylinder (290), the cylinder body of the oil cylinder (260) is fixing pieces (210), the piston rod of the oil cylinder (260) is connected with the piston rod of the second oil cylinder (270) to form a sliding piece (222) of the four sliding pieces (221), the cylinder body of the second oil cylinder (270) is a second sliding piece (223) of the four sliding pieces (221) connected with the corresponding locking beam (300), the cylinder body of the third oil cylinder (280) is another fixing piece (210), the piston rod of the third oil cylinder (280) is connected with the piston rod of the fourth oil cylinder (290) to form a third sliding piece (224) of the four sliding pieces (221), and the cylinder body of the fourth oil cylinder (290) is a fourth sliding piece (225) of the four sliding pieces (221) connected with the corresponding locking beam (300).
5. The spreader (10) according to claim 4, wherein:

the piston rod of the oil cylinder (260) is connected with the piston rod of the second oil cylinder (270) through a flange structure (2221), and the piston rod of the third oil cylinder (280) is connected with the piston rod of the fourth oil cylinder (290) through a flange structure (2221).
6. The spreader (10) according to any of claims 1-5, wherein:

the lifting appliance (10) further comprises a mounting piece (400) and an th supporting piece (500), wherein the mounting piece (400) and the th supporting piece (500) are fixedly connected with the main beam (100), the mounting piece (400) and the th supporting piece (500) are arranged at intervals along the preset direction, the fixing piece (210) is connected with the mounting piece (400), and the fixing piece (210) penetrates through the th supporting piece (500).
7. The spreader (10) according to claim 6, wherein:

the spreader (10) further comprises a second support (600), the second support (600) being fixedly connected to the main beam (100), the sliding member (221) being capable of penetrating the second support (600) and being supported by the second support (600) when the sliding member (221) slides in the predetermined direction relative to the fixed member (210).
8. The spreader (10) according to claim 7, wherein:

when the two sliding pieces (221) in the sliding group (220) at slide away from the fixed piece (210) along the preset direction and slide to the maximum stroke, the connecting position of the two sliding pieces (221) is supported on the second supporting piece (600).
9. The spreader (10) according to claim 1, wherein:

the spreader (10) further comprises a position sensor for detecting the position of the slider (221) relative to the mount (210), the detection point of the position sensor being located on the main beam (100).
10, seed forklift, characterized in that, the forklift includes:

a machine body and a spreader (10) according to any of claims 1-9, the spreader (10) being mounted to the machine body.