An anti-spillage device for the skip of a skip loader

Abstract

The present invention relates to a device for preventing spillage of the hopper of a skip loader, comprising: a lifting mechanism, a lifting oil cylinder, a fixing frame and safety bolts. The fixing frame includes a first fixing member, a second fixing member, a first safety limit tube, a second safety limit tube and a pressing block. The lifting mechanism includes a lifting beam, a first lifting tube and a second lifting tube. The safety bolts include a first safety bolt and a second safety bolt. The lifting mechanism is driven by the lifting oil cylinder to lift and lower, raising the tail of the hopper on the skip loader by a certain height, so that the hopper forms an inclined angle with the ground in the front and back, and the hopper behind the skip loader is in a state of being lower in the front and higher in the back, avoiding the spillage of materials from the back of the hopper; by moving the first safety bolt and the second safety bolt through the first safety limit tube and the second safety limit tube, the first lifting tube and the second lifting tube are prevented from moving downward, preventing the lifting mechanism from falling back due to the jolting of the skip loader during transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of skip loaders, and particularly to a skip anti-spillage device for a skip loader. Background Art

[0002] Skip loaders can be used for the recycling, treatment, and transportation operations of various industrial wastes, cold-rolled strip head and tail wastes, and waste coils. Due to the fluffy characteristics of industrial scrap steel and waste materials in the industry, it is easy to cause spillage during transportation on bumpy roads, which not only endangers the safety of passing pedestrians and vehicles but also wastes manpower for on-site cleaning. Therefore, how to prevent the material from spilling from the skip loader during transportation has become an urgent problem to be solved.

[0003] The information disclosed in the background art part of the present invention is only intended to deepen the understanding of the general background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0004] To solve the technical problems mentioned in the above background art or at least partially solve the above technical problems, the present invention provides a skip anti-spillage device for a skip loader. The skip loader includes a skip and a skip loader secondary beam disposed below the skip. The skip anti-spillage device is fixedly disposed on the skip loader secondary beam, and the skip anti-spillage device includes: a lifting mechanism, a lifting oil cylinder, a fixing frame, and a safety bolt;

[0005] Wherein, the fixing frame includes a first fixing member, a second fixing member, a first safety limit tube, a second safety limit tube, and a pressing block. The first fixing member and the second fixing member are parallel to each other and fixedly disposed on the skip loader secondary beam. The first safety limit tube and the second safety limit tube are fixedly disposed between the first fixing member and the second fixing member, and the first safety limit tube is perpendicular to both the first fixing member and the second fixing member. The second safety limit tube is perpendicular to both the first fixing member and the second fixing member;

[0006] The lifting oil cylinder is fixedly disposed between the first fixing member and the second fixing member through the pressing block, and the output end of the lifting oil cylinder is fixedly connected to the lifting mechanism;

[0007] The lifting mechanism includes a lifting beam, a first lifting pipe, and a second lifting pipe. The lifting mechanism is connected to the bottom of the hanging bucket. The first lifting pipe and the second lifting pipe are fixedly arranged below the lifting beam. A first slider is fixedly arranged at the lower end of the first lifting pipe, and a second slider is fixedly arranged at the lower end of the second lifting pipe. The first lifting pipe and the first slider are nested in the first safety limit pipe, and the second lifting pipe and the second slider are nested in the second safety limit pipe. A first limit block is fixedly arranged inside the upper end of the first safety limit pipe, and a second limit block is fixedly arranged inside the upper end of the second safety limit pipe;

[0008] The safety pin includes a first safety pin and a second safety pin. The first safety pin includes a first limit pin, a first limit pin shaft, a first pin cylinder, a first fixed pin shaft, and a first pin cylinder mounting seat. The overlapping parts of the first fixing member, the second fixing member, and the first safety limit pipe are all provided with the same square holes, which are matched with the first limit pin. The first limit pin is rotatably connected to the first pin cylinder through the first limit pin shaft. The output end of the first pin cylinder is fixedly connected to the first limit pin shaft, and the other end of the first pin cylinder is rotatably connected to the first pin cylinder mounting seat through the first fixed pin shaft. The first pin cylinder mounting seat is fixedly arranged on the hanging bucket truck;

[0009] The second safety pin has the same structure as the first safety pin.

[0010] The second safety pin includes a second limit pin, a second limit pin shaft, a second pin cylinder, a second fixed pin shaft, and a second pin cylinder mounting seat. The overlapping parts of the first fixing member, the second fixing member, and the second safety limit pipe are all provided with the same square holes, which are matched with the second limit pin, so that the second limit pin can move back and forth in the first fixing member, the second fixing member, and the second safety limit pipe through the square holes. The second limit pin is rotatably connected to the second pin cylinder through the second limit pin shaft. The output end of the second pin cylinder is fixedly connected to the second limit pin shaft, and the other end of the second pin cylinder is rotatably connected to the second pin cylinder mounting seat through the second fixed pin shaft. The second pin cylinder mounting seat is fixedly arranged on the hanging bucket truck.

[0011] A plurality of threaded holes are evenly opened around the end of the first lifting pipe. The first slider is composed of four iron blocks, and through holes are opened on the four iron blocks, which are matched with the threaded holes at the end of the first lifting pipe. The four iron blocks are fixed to the outer surface around the end of the first lifting pipe by bolts.

[0012] A number of threaded holes are evenly formed around the end of the second lifting pipe. The second slider is composed of four iron blocks, and through holes matching the threaded holes at the end of the second lifting pipe are formed on the four iron blocks. The four iron blocks are fixed to the periphery of the outer surface of the end of the second lifting pipe by bolts.

[0013] A number of threaded holes are evenly formed around the end of the top of the first safety limit pipe. The first limit block is composed of four iron blocks, and through holes matching the threaded holes at the end of the first safety limit pipe are formed on the four iron blocks. The four iron blocks are fixed to the periphery of the inner surface of the end of the first safety limit pipe by bolts.

[0014] A number of threaded holes are evenly formed around the end of the top of the second safety limit pipe. The second limit block is composed of four iron blocks, and through holes matching the threaded holes at the end of the second safety limit pipe are formed on the four iron blocks. The four iron blocks are fixed to the periphery of the inner surface of the end of the second safety limit pipe by bolts.

[0015] Two relatively parallel lifting oil cylinder fixing parts are fixedly connected between the first fixing part and the second fixing part. A U-shaped groove is formed in the middle of the lifting oil cylinder fixing part. The pressing block is fixed on the lifting oil cylinder fixing part. The bottom of the pressing block is arc-shaped and a bearing is fixedly arranged between the pressing block and the lifting oil cylinder fixing part. The lifting oil cylinder is rotationally connected to the fixing frame through the bearing.

[0016] The above technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art: A hopper anti-spillage device for a hopper truck provided by the embodiment of the present invention starts to extend by the lifting oil cylinder, drives the lifting mechanism to rise, the lifting beam drives the anti-spillage device to lift the tail of the hopper on the hopper truck by a height of 200 mm, and the height of the lifted tail of the hopper is 200 mm, so that the front and rear of the hopper form an oblique angle with respect to the ground, and the angle of the oblique angle is 6°. The hopper behind the hopper truck forms a state of lower in the front and higher in the rear, avoiding the spillage of materials from the rear of the hopper;

[0017] By the first lifting pipe and the first slider sliding in the first safety limit pipe, the first slider contacts the first limit block, the second lifting pipe and the second slider slide in the second safety limit pipe, and the second slider contacts the second limit block, preventing the lifting mechanism from falling off;

[0018] By starting the first bolt cylinder and the second bolt cylinder synchronously, the first bolt cylinder starts to extend, driving the first safety bolt to move. The first safety bolt passes through the first fixing member, the first safety limit tube and the second fixing member in sequence through the square hole, so that the first lifting tube and the first slider cannot move downward. The second bolt cylinder starts to extend, driving the second safety bolt to move. The second safety bolt passes through the first fixing member, the second safety limit tube and the second fixing member in sequence through the square hole, so that the second lifting tube and the second slider cannot move downward, preventing the lifting mechanism from falling back due to the jolting of the skip loader during transportation.

[0019] When the skip loader does not need to transport materials, the first bolt cylinder and the second bolt cylinder start to shorten synchronously, respectively driving the first safety bolt and the second safety bolt to move. The lifting cylinder starts to shorten, driving the lifting mechanism to fall back. The first lifting tube and the first slider fall back synchronously without being blocked by the first safety bolt, and the second lifting tube and the second slider fall back synchronously without being blocked by the second safety bolt, facilitating operations such as unloading of the skip loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 The first perspective structural diagram of the skip loader hopper anti-leakage device provided by the embodiment of the present invention;

[0023] Figure 2 The second perspective structural diagram of the skip loader hopper anti-leakage device provided by the embodiment of the present invention;

[0024] Figure 3 The non-working state side sectional view of the skip loader hopper anti-leakage device provided by the embodiment of the present invention;

[0025] Figure 4 The working state side sectional view of the skip loader hopper anti-leakage device provided by the embodiment of the present invention;

[0026] Figure 5 The third perspective structural diagram of the skip loader hopper anti-leakage device provided by the embodiment of the present invention;

[0027] Figure 6 The structural diagram of the skip loader provided by the embodiment of the present invention;

[0028] Figure 7 It is a schematic exploded view of the anti-spillage device for the hopper of the skip loader provided by the embodiment of the present invention;

[0029] Figure 8 It is a schematic enlarged three-dimensional structure view of the fixing frame provided by the embodiment of the present invention.

[0030] Icon:

[0031] 1. Lifting mechanism; 11. Lifting beam; 12. First lifting pipe; 13. Second lifting pipe; 14. First slider; 15. Second slider; 2. Lifting oil cylinder; 3. Fixing frame; 31. First fixing piece; 32. Second fixing piece; 33. First safety limit pipe; 34. Second safety limit pipe; 35. Pressing block; 36. First limit block; 37. Second limit block; 4. Safety bolt; 41. First safety bolt; 411. First limit pin; 412. First limit pin shaft; 413. First bolt cylinder; 414. First fixing pin shaft; 415. First bolt cylinder mounting seat; 42. Second safety bolt; 421. Second limit pin; 422. Second limit pin shaft; 423. Second bolt cylinder; 424. Second fixing pin shaft; 425. Second bolt cylinder mounting seat; 9. Skip loader; 91. Hopper; 92. Skip loader auxiliary beam. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] As Figures 1 to 8 shown, a hopper anti-spillage device for a skip loader provided by an embodiment of the present invention is arranged on the skip loader. Specifically: The skip loader 9 includes a hopper 91 and a skip loader secondary beam 92 arranged below the hopper 91. The hopper anti-spillage device is fixedly arranged on the skip loader secondary beam 92. The hopper anti-spillage device includes: a lifting mechanism 1, a lifting oil cylinder 2, a fixing frame 3, and a safety bolt 4;

[0037] Wherein, the fixing frame 3 includes a first fixing member 31, a second fixing member 32, a first safety limit tube 33, a second safety limit tube 34, and a pressing block 35. The first fixing member 31 and the second fixing member 32 are parallel to each other and fixedly arranged on the skip loader secondary beam 92. The first safety limit tube 33 and the second safety limit tube 34 are fixedly arranged between the first fixing member 31 and the second fixing member 32, and the first safety limit tube 33 is perpendicular to both the first fixing member 31 and the second fixing member 32, and the second safety limit tube 34 is perpendicular to both the first fixing member 31 and the second fixing member 32;

[0038] The lifting oil cylinder 2 is fixedly arranged between the first fixing member 31 and the second fixing member 32 through the pressing block 35, and the output end of the lifting oil cylinder 2 is fixedly connected to the lifting mechanism 1;

[0039] The lifting mechanism 1 includes a lifting beam 11, a first lifting pipe 12 and a second lifting pipe 13. The lifting mechanism 1 is connected to the bottom of the hanging bucket 91. The first lifting pipe 12 and the second lifting pipe 13 are fixedly arranged below the lifting beam 11. A first slider 14 is fixedly arranged at the lower end of the first lifting pipe 12, and a second slider 15 is fixedly arranged at the lower end of the second lifting pipe 13. The first lifting pipe 12 and the first slider 14 are nested in the first safety limit pipe 33, and the second lifting pipe 13 and the second slider 15 are nested in the second safety limit pipe 34. A first limit block 36 is fixedly arranged inside the upper end of the first safety limit pipe 33, and a second limit block 37 is fixedly arranged inside the upper end of the second safety limit pipe 34;

[0040] The safety bolt 4 includes a first safety bolt 41 and a second safety bolt 42. The first safety bolt 41 includes a first limit bolt 411, a first limit pin shaft 412, a first bolt cylinder 413, a first fixed pin shaft 414 and a first bolt cylinder mounting seat 415. Square holes are formed at the overlapping parts of the first fixing member 31, the second fixing member 32 and the first safety limit pipe 33, and the square holes are matched with the first limit bolt 411, so that the first limit bolt 411 can move back and forth in the first fixing member 31, the second fixing member 32 and the first safety limit pipe 33 through the square holes. The first limit bolt 411 is rotatably connected to the first bolt cylinder 413 through the first limit pin shaft 412. The output end of the first bolt cylinder 413 is fixedly connected to the first limit pin shaft 412, and the other end of the first bolt cylinder 413 is rotatably connected to the first bolt cylinder mounting seat 415 through the first fixed pin shaft 414. The first bolt cylinder mounting seat 415 is fixedly arranged on the hanging bucket truck 9;

[0041] The second safety bolt 42 has the same structure as the first safety bolt 41.

[0042] Preferably, the second safety bolt 42 includes a second limit bolt 421, a second limit pin shaft 422, a second bolt cylinder 423, a second fixed pin shaft 424, and a second bolt cylinder mounting seat 425. Square holes are provided at the overlapping parts of the first fixing member 31, the second fixing member 32, and the second safety limit tube 34, and the square holes are matched with the second limit bolt 421, so that the second limit bolt 421 can move back and forth in the first fixing member 31, the second fixing member 32, and the second safety limit tube 34 through the square holes. The second limit bolt 421 is rotatably connected to the second bolt cylinder 423 through the second limit pin shaft 422. The output end of the second bolt cylinder 423 is fixedly connected to the second limit pin shaft 422, and the other end of the second bolt cylinder 423 is rotatably connected to the second bolt cylinder mounting seat 425 through the second fixed pin shaft 424. The second bolt cylinder mounting seat 425 is fixedly arranged on the skip loader 9.

[0043] Preferably, a plurality of threaded holes are evenly provided around the end of the first lifting pipe 12. The first slider 14 is composed of four iron blocks, and through holes matching the threaded holes at the end of the first lifting pipe 12 are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the outer surface of the end of the first lifting pipe 12 by bolts.

[0044] Preferably, a plurality of threaded holes are evenly provided around the end of the second lifting pipe 13. The second slider 15 is composed of four iron blocks, and through holes matching the threaded holes at the end of the second lifting pipe 13 are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the outer surface of the end of the second lifting pipe 13 by bolts.

[0045] Preferably, a plurality of threaded holes are evenly provided around the top end of the first safety limit tube 33. The first limit block 36 is composed of four iron blocks, and through holes matching the threaded holes at the end of the first safety limit tube 33 are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the inner surface of the end of the first safety limit tube 33 by bolts.

[0046] Preferably, a plurality of threaded holes are evenly provided around the top end of the second safety limit tube 34. The second limit block 37 is composed of four iron blocks, and through holes matching the threaded holes at the end of the second safety limit tube 34 are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the inner surface of the end of the second safety limit tube 34 by bolts.

[0047] Preferably, two relatively parallel lifting oil cylinder fixing members are fixedly connected between the first fixing member 31 and the second fixing member 32. A U-shaped groove is formed in the middle of the lifting oil cylinder fixing members. The pressing block 35 is fixed on the lifting oil cylinder fixing members. The bottom of the pressing block 35 is arc-shaped and a bearing is fixedly arranged between the pressing block 35 and the lifting oil cylinder fixing members. The lifting oil cylinder 2 is rotationally connected to the fixing frame 3 through the bearing.

[0048] The working process of a hopper anti-spillage device for a skip loader provided by an embodiment of the present invention is as follows: First, the lifting oil cylinder 2 starts to extend, driving the lifting mechanism 1 to rise. The lifting beam 11 drives the anti-spillage device to lift the tail of the hopper 91 on the skip loader 9 by a height. The height of the lifted tail of the hopper is 200 mm, so that the hopper forms an inclined angle with the ground before and after, and the angle of the inclined angle is 6°. The hopper 91 behind the skip loader forms a state of lower in the front and higher in the rear, avoiding the spillage of materials from the rear of the hopper.

[0049] The first lifting pipe 12 and the first slider 14 slide in the first safety limit pipe 33. The first slider 14 contacts the first limit block 36. The second lifting pipe 13 and the second slider 15 slide in the second safety limit pipe 34. The second slider 15 contacts the second limit block 37, preventing the lifting mechanism 1 from falling off.

[0050] Then, the first pin cylinder 413 and the second pin cylinder 423 are synchronously started. The first pin cylinder 413 starts to extend, driving the first safety pin 41 to move. The first safety pin 41 passes through the first fixing member 31, the first safety limit pipe 33 and the second fixing member 32 in sequence through the square hole, so that the first lifting pipe 12 and the first slider 14 cannot move downward. The second pin cylinder 423 starts to extend, driving the second safety pin 42 to move. The second safety pin 42 passes through the first fixing member 31, the second safety limit pipe 34 and the second fixing member 32 in sequence through the square hole, so that the second lifting pipe 13 and the second slider 15 cannot move downward, preventing the lifting mechanism 1 from falling back due to the bump of the skip loader 9 during transportation.

[0051] Finally, when the skip loader 9 does not need to transport materials, the first pin cylinder 413 and the second pin cylinder 423 are synchronously started to shorten, respectively driving the first safety pin 41 and the second safety pin 42 to move. The lifting oil cylinder 2 starts to shorten, driving the lifting mechanism 2 to fall back. The first lifting pipe 12 and the first slider 14 fall back synchronously without being blocked by the first safety pin 41. The second lifting pipe 13 and the second slider 15 fall back synchronously without being blocked by the second safety pin 42, facilitating operations such as unloading of the skip loader 9.

[0052] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-spillage device for the hopper of a skip loader. The skip loader includes a hopper and a secondary beam of the skip loader disposed below the hopper, and is characterized in that, The anti-spillage device of the skip is fixedly arranged on the secondary beam of the skip truck. The anti-spillage device of the skip includes: a lifting mechanism, a lifting oil cylinder, a fixed frame and a safety bolt; Wherein, the fixed frame includes a first fixing member, a second fixing member, a first safety limit tube, a second safety limit tube and a pressing block. The first fixing member and the second fixing member are parallel to each other and fixedly arranged on the secondary beam of the skip truck. The first safety limit tube and the second safety limit tube are fixedly arranged between the first fixing member and the second fixing member; The lifting oil cylinder is fixedly arranged between the first fixing member and the second fixing member through the pressing block, and the output end of the lifting oil cylinder is fixedly connected with the lifting mechanism; The lifting mechanism includes a lifting beam, a first lifting tube and a second lifting tube. The lifting mechanism is connected with the bottom of the skip. The first lifting tube and the second lifting tube are fixedly arranged below the lifting beam. A first sliding block is fixedly arranged at the lower end of the first lifting tube, and a second sliding block is fixedly arranged at the lower end of the second lifting tube. The first lifting tube and the first sliding block are nested in the first safety limit tube, and the second lifting tube and the second sliding block are nested in the second safety limit tube. A first limit block is fixedly arranged inside the upper end of the first safety limit tube, and a second limit block is fixedly arranged inside the upper end of the second safety limit tube; The safety bolt includes a first safety bolt and a second safety bolt. The first safety bolt includes a first limit bolt, a first limit pin shaft, a first bolt oil cylinder, a first fixed pin shaft and a first bolt oil cylinder mounting seat. Square holes are opened at the overlapping parts of the first fixing member, the second fixing member and the first safety limit tube. The square holes are matched with the first limit bolt, and the first limit bolt is rotatably connected with the first bolt oil cylinder through the first limit pin shaft; The second safety bolt has the same structure as the first safety bolt; Two relatively parallel lifting oil cylinder fixing members are fixedly connected between the first fixing member and the second fixing member. A U-shaped groove is opened in the middle of the lifting oil cylinder fixing member. The pressing block is fixed on the lifting oil cylinder fixing member. The bottom of the pressing block is arc-shaped, and a bearing is fixedly arranged between the pressing block and the lifting oil cylinder fixing member. The lifting oil cylinder is rotatably connected with the fixed frame through the bearing; The first safety limit tube is perpendicular to both the first fixing member and the second fixing member, and the second safety limit tube is perpendicular to both the first fixing member and the second fixing member; By starting and extending the lifting oil cylinder, the lifting mechanism is driven to rise. The lifting beam drives the anti-spillage device to lift the tail of the skip on the skip truck by a certain height, so that the skip forms an oblique angle with the ground before and after, and the skip behind the skip truck is in a state of being lower in the front and higher in the back, avoiding the spillage of materials from the back of the skip.

2. The anti-leakage device for the hopper of a skip loader according to claim 1, characterized in that, The output end of the first bolt oil cylinder is fixedly connected with the first limit pin shaft, and the other end of the first bolt oil cylinder is rotatably connected with the first bolt oil cylinder mounting seat through the first fixed pin shaft. The first bolt oil cylinder mounting seat is fixedly arranged on the skip truck.

3. The anti-spillage device for the hopper of a skip loader according to claim 2, characterized in that, The second safety bolt includes a second limit bolt, a second limit pin shaft, a second bolt cylinder, a second fixed pin shaft, and a second bolt cylinder mounting seat. Square holes are provided at the overlapping parts of the first fixing member, the second fixing member, and the second safety limit tube. The square holes are matched with the second limit bolt, so that the second limit bolt can move back and forth through the square holes in the first fixing member, the second fixing member, and the second safety limit tube.

4. The anti-spillage device for the hopper of a skip loader according to claim 3, characterized in that, The second limit bolt is rotatably connected to the second bolt cylinder through the second limit pin shaft. The output end of the second bolt cylinder is fixedly connected to the second limit pin shaft. The other end of the second bolt cylinder is rotatably connected to the second bolt cylinder mounting seat through the second fixed pin shaft. The second bolt cylinder mounting seat is fixedly arranged on the skip car.

5. The anti-spillage device for the skip of a skip loader according to claim 4, characterized in that, A plurality of threaded holes are evenly provided around the end of the first lifting tube. The first slider is composed of four iron blocks. Through holes matching the threaded holes at the end of the first lifting tube are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the outer surface of the end of the first lifting tube by bolts.

6. The anti-spillage device for the skip of a skip loader according to claim 5, characterized in that, A plurality of threaded holes are evenly provided around the end of the second lifting tube. The second slider is composed of four iron blocks. Through holes matching the threaded holes at the end of the second lifting tube are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the outer surface of the end of the second lifting tube by bolts.

7. The anti-spillage device for the skip of a skip loader according to claim 6, characterized in that A plurality of threaded holes are evenly provided around the top end of the first safety limit tube. The first limit block is composed of four iron blocks. Through holes matching the threaded holes at the end of the first safety limit tube are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the inner surface of the end of the first safety limit tube by bolts.

8. The anti-spillage device for the skip of a skip loader according to claim 7, characterized in that A plurality of threaded holes are evenly provided around the top end of the second safety limit tube. The second limit block is composed of four iron blocks. Through holes matching the threaded holes at the end of the second safety limit tube are provided on the four iron blocks. The four iron blocks are fixed to the periphery of the inner surface of the end of the second safety limit tube by bolts.

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