CN215322490U - Backing plate box assembly and engineering machinery - Google Patents

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a base plate box assembly and engineering machinery. The backing plate box assembly includes: the cushion plate box is provided with an accommodating space for accommodating the cushion plate and a taking and placing opening communicated with the accommodating space; the limiting piece is rotatably arranged on the pad box and provided with a limiting position for blocking the taking and placing opening and an avoiding position for avoiding the taking and placing opening, and at the limiting position, the limiting piece can rotate towards the accommodating space and is switched to the avoiding position from the limiting position; the limiting piece is limited by the cushion plate box to rotate towards the direction far away from the accommodating space. The limiting piece can only rotate towards the containing space at the limiting position and cannot rotate towards the direction far away from the containing space, after the base plate is placed in the containing space, the limiting piece blocks the taking and placing opening when the limiting piece is located at the limiting position, under the limitation of the base plate box, even if the base plate pushes the limiting piece, the limiting piece cannot rotate, the limiting of the base plate is more reliable, and the situation that the base plate is thrown out when a pump truck runs cannot occur.

Description

Backing plate box assembly and engineering machinery

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a base plate box assembly and engineering machinery.

Background

The backing plate box of concrete pump truck is used for accomodating the backing plate when the pump truck is out of work, and general backing plate box is installed on the chassis of pump truck, and the backing plate generally is plastic slab or plank that has high strength toughness. When the pump truck works, the backing plate is arranged below the supporting leg, so that the contact area between the supporting leg and the ground can be increased, the working stability of the pump truck is improved, and the ground is protected.

In the prior art, a backing plate box assembly comprises a backing plate box and an anti-falling assembly, wherein the backing plate box is provided with a taking and placing opening, a positioning column is arranged on the side wall of the backing plate box, the anti-falling assembly comprises a connecting piece and a limiting piece, one end of the connecting piece is in pivot connection with the backing plate box at a pivot joint, the other end of the connecting piece is connected with the limiting piece, the connecting piece and the limiting piece can swing between a closed position and an open position around the pivot joint, and an open sliding chute is arranged at the other end of the connecting piece; in the closed position, the limiting part blocks the taking and placing opening of the gasket box, and the positioning column is kept in the open sliding chute; at the open position, the locating part lets open the getting of the backing plate box and puts the mouth, and the positioning column is deviate from the open spout. However, the pad box assembly described above has the following disadvantages:

1. the backing plate is easy to throw out when the pump truck turns when running by adopting a mode of locking the open sliding groove and the positioning column, and the reliability is poor;

2. the opening chute is easy to enter sundries and is easy to be blocked, the service life of the opening chute is short, and the locking is ineffective due to serious abrasion after frequent use;

3. the mounting position of the positioning column is not clear, and the field mounting position of the positioning column is difficult to find;

4. the connecting piece has no fixed mode, and noise can be generated due to collision in the pumping process.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a base plate box assembly and engineering machinery, and aims to solve the problem that a base plate is easy to throw out when a pump truck turns when running through the matching of an open sliding groove and a positioning column in the prior art.

To achieve the above object, the present invention provides a dunnage cassette assembly comprising: the cushion plate box is provided with an accommodating space for accommodating the cushion plate and a taking and placing opening communicated with the accommodating space; the limiting piece is rotatably arranged on the pad box and provided with a limiting position for blocking the taking and placing opening and an avoiding position for avoiding the taking and placing opening, and at the limiting position, the limiting piece can rotate towards the accommodating space and is switched to the avoiding position from the limiting position; the limiting piece is limited by the cushion plate box to rotate towards the direction far away from the accommodating space.

Optionally, the rotation axis of the limiting member is perpendicular to the taking and placing direction of the taking and placing base plate, and the limiting member is located at the limiting position under the action of gravity of the limiting member; under the action of external force, the limiting part is switched from the limiting position to the avoiding position.

Optionally, the limiting member includes a horizontal plate section and an inclined plate section, and the inclined plate section is disposed on one side of the horizontal plate section facing the accommodating space and inclined downward.

Optionally, the backing plate box assembly further comprises a locking member, the locking member has a locking state for locking the limiting member immovably and an unlocking state for rotating the limiting member, and when the limiting member is at the limiting position, the locking member is in the locking state; when the locking piece is in an unlocking state, the limiting piece can be switched between a limiting position and an avoiding position.

Optionally, the locking piece is a magnetic piece arranged on the limiting piece or the backing plate box, under the action of gravity of the limiting piece and magnetic force of the magnetic piece, the magnetic piece and the backing plate box are attracted together, the locking piece is in a locking state, and the limiting piece is in a limiting position; under the action of external force, the magnetic part is separated from the base plate box, and the limiting part is switched to an avoiding position from a limiting position.

Optionally, the magnetic element is embedded in a retaining member or a shim box.

Optionally, the backing plate box assembly further includes a rotating shaft, the rotating shaft is higher than the pick-and-place opening, two mounting holes for the rotating shaft to penetrate are formed in the backing plate box, a through hole for the rotating shaft to penetrate is formed in the limiting part, and the limiting part and the rotating shaft rotate synchronously.

Optionally, the backing plate box assembly further comprises an operating part, the operating part is connected with one end of the rotating shaft, the operating part is located on the outer side of the backing plate box to enable the limiting part to be switched from the limiting position to the avoiding position through operating the operating part, and/or the outer peripheral surface of one end of the rotating shaft is provided with a rotation stopping tangent plane, the through holes are provided with two first through holes and two second through holes, the first through holes are round holes, and part of wall surfaces of the second through holes are matched with the rotation stopping tangent plane.

Optionally, when the backing plate box assembly further comprises an operating part, an anti-falling opening is formed in one end, away from the operating part, of the rotating shaft, and the backing plate box assembly further comprises an anti-falling part, wherein the anti-falling part is located in the anti-falling opening.

The present invention also provides an engineering machine, including: backing plate and above-mentioned backing plate box assembly.

The technical scheme of the utility model has the following advantages: the limiting piece can only rotate towards the containing space at the limiting position and cannot rotate towards the direction far away from the containing space, namely, the limiting piece can only rotate in one direction at the limiting position, after the base plate is placed in the containing space, the limiting piece blocks the taking and placing opening when the limiting piece is at the limiting position, and under the limitation of the base plate box, even if the base plate pushes the limiting piece, the limiting piece cannot rotate, so that the limiting of the base plate is more reliable, and the situation that the base plate is thrown out when the pump truck runs cannot occur; when getting the backing plate, the locating part can rotate towards accommodation space for it switches to dodging the position from limiting position, and the locating part dodges gets and puts the mouth, can take out the backing plate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 shows a partially exploded perspective view of a dunnage cassette assembly of the present invention;

FIG. 2 shows a partially exploded front view schematic of the dunnage cassette assembly of FIG. 1;

FIG. 3 illustrates a perspective view of a retainer of the dunnage cassette assembly of FIG. 1;

FIG. 4 shows a schematic front view of the dunnage cassette assembly of FIG. 1;

FIG. 5 shows a side view schematic of the dunnage cassette assembly of FIG. 4.

Description of reference numerals:

10. a pad box; 11. a lower cover plate; 12. an upper cover plate; 13. a rear cover plate; 20. a limiting member; 21. a horizontal plate section; 22. a tilt plate section; 23. connecting lugs; 231. a first through hole; 232. a second through hole; 30. a magnetic member; 40. a base plate; 50. a handle; 51. a rotating shaft; 52. an operating member; 60. and a clamp spring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

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

As shown in fig. 1, 4 and 5, the dunnage cassette assembly of the present embodiment comprises: a shim box 10 and a stop 20. The pad box 10 has an accommodating space for accommodating the pad 40 and a pick-and-place port communicated with the accommodating space; the limiting member 20 is rotatably arranged on the pad box 10, the limiting member 20 has a limiting position for blocking the access opening and an avoiding position for avoiding the access opening, and at the limiting position, the limiting member 20 can rotate towards the accommodating space and switch from the limiting position to the avoiding position; the pad box 10 restricts the rotation of the limiting member 20 in a direction away from the accommodating space.

By applying the base plate box assembly of the embodiment, the limiting piece 20 can only rotate towards the accommodating space at the limiting position and cannot rotate towards the direction far away from the accommodating space, that is, the limiting piece 20 can only rotate in one direction at the limiting position, after the base plate 40 is placed in the accommodating space, when the limiting piece 20 is at the limiting position, the limiting piece 20 blocks the taking and placing opening, under the limitation of the base plate box 10, even if the base plate 40 pushes the limiting piece 20, the limiting piece 20 cannot rotate, so that the limiting of the base plate 40 is more reliable, and the situation that the base plate is thrown out when the pump truck runs cannot occur; when the backing plate 40 is taken out, the limiting member 20 can rotate towards the accommodating space, so that the limiting member is switched from the limiting position to the avoiding position, the limiting member 20 avoids the taking and placing opening, and the backing plate 40 can be taken out.

In the embodiment, the rotation axis of the limiting member 20 is perpendicular to the taking and placing direction of the taking and placing backing plate 40, and under the action of gravity of the limiting member 20, the limiting member 20 is at the limiting position; under the action of an external force, the limiting member 20 is switched from the limiting position to the avoiding position. The limiting piece 20 automatically resets under the action of gravity, manual resetting is not needed, the labor intensity of operators is reduced, and the situation that the limiting piece 20 generates vibration and noise during pumping is effectively avoided. Wherein the external force is an urging force of the pad 40 or an urging force of an operator. When the base plate 40 is placed, the limiting piece 20 is switched from the limiting position to the avoiding position under the action of the pushing force of the base plate 40; when the backing plate 40 is taken out, the operator pushes the limiting member 20, and the limiting member 20 is switched from the limiting position to the avoiding position.

In the present embodiment, as shown in fig. 2 and fig. 3, the limiting member 20 includes a horizontal plate section 21 and an inclined plate section 22, and the inclined plate section 22 is disposed on a side of the horizontal plate section 21 facing the accommodating space and is inclined downward, in which case the limiting member 20 may also be referred to as a limiting baffle. The inclined plate segment 22 can enable the limiting member 20 to automatically reset under the action of self gravity. Preferably, the horizontal plate segment 21 and the inclined plate segment 22 are connected by a circular arc segment, so as to facilitate the rotation of the limiting member 20.

In this embodiment, the tie plate box assembly further includes a locking member, the locking member has a locking state for locking the limiting member 20 and an unlocking state for rotating the limiting member 20, and when the limiting member 20 is at the limiting position, the locking member is in the locking state; when the locking element is in the unlocked state, the limiting element 20 can be switched between a limiting position and an avoidance position. When the limiting member 20 is located at the limiting position, the locking member locks the limiting member 20, so that the limiting member 20 does not vibrate or generate noise during pumping or transportation, thereby effectively avoiding the conditions of vibration and noise during operation. When the locking member is in the unlocking state, the limiting member 20 can be switched between the limiting position and the avoiding position, so that the base plate can be conveniently taken and placed.

In the present embodiment, the locking member is a magnetic member 30 disposed on the limiting member 20, under the action of gravity of the limiting member 20 and the magnetic force of the magnetic member 30, the magnetic member 30 and the pad box 10 are attracted together, the locking member is in a locking state, and the limiting member 20 is in a limiting position; under the action of external force, the magnetic member 30 is separated from the pad box 10, and the limiting member 20 is switched from the limiting position to the avoiding position. The limiting piece 20 automatically resets under the action of the gravity of the limiting piece 20 and the magnetic force of the magnetic piece 30, and manual resetting is not needed; the magnetic part 30 locks the position of the limiting part 20, so that the situation that a base plate falls off and the situation that the limiting part 20 generates vibration and noise during pumping can be effectively prevented, the magnetic part 30 can fix the limiting part 20 without tools, and the fixing is simple and convenient. Preferably, the magnetic member 30 is a magnet or the like, for example, a button magnet. As an alternative embodiment, the locking member is a screw, and the limiting member 20 is fixed to the gasket box 10 by the screw.

In the present embodiment, the magnetic member 30 is embedded in the limiting member 20. Preferably, a counter bore is provided on the top surface of the limiting member 20, and the magnetic member 30 is embedded in the counter bore. Alternatively, the magnetic member 30 may be directly fixed to the top surface of the limiting member 20 without providing a counter bore.

In this embodiment, as shown in fig. 1, the backing plate box assembly further includes a rotating shaft 51, the rotating shaft 51 is higher than the access opening, that is, after the backing plate 40 is placed in the accommodating space, the rotating shaft 51 is higher than the backing plate 40, two mounting holes for the rotating shaft 51 to penetrate are arranged on the backing plate box 10, a through hole for the rotating shaft 51 to penetrate is arranged on the limiting member 20, and the limiting member 20 and the rotating shaft 51 rotate synchronously. The limiting piece 20 is installed on the pad box 10 through the rotating shaft 51, so that the installation is simple and convenient, and the assembly efficiency is improved.

In the present embodiment, the dunnage box assembly further comprises an operating member 52, the operating member 52 is connected to one end of the rotating shaft 51, and the operating member 52 is located outside the dunnage box 10, so that the limiting member 20 is switched from the limiting position to the avoiding position by operating the operating member 52. When the backing plate 40 is taken out, an operator rotates the operating part 52, the operating part 52 drives the rotating shaft and the limiting part 20 to rotate, the limiting part 20 is switched from the limiting position to the avoiding position, and the backing plate 40 can be taken out; after the base plate 40 is taken out, the limiting piece 20 resets under the action of self gravity, and the magnetic piece 30 is adsorbed on the base plate box 10 to eliminate vibration noise; when the backing plate 40 is placed, the backing plate 40 pushes the limiting part 20 to rotate towards the inner side, and after the backing plate 40 is placed in place, the limiting part 20 automatically resets under the action of self gravity, and under the action of the adsorption force of the magnetic part 30, the limiting part 20 and the backing plate box 10 are attracted together, so that the backing plate is effectively prevented from sliding out, and the locking is reliable. Preferably, the operation element 52 is an operation rod, when the limiting element 20 is located at the limiting position, the operation rod and the taking and placing direction of the taking and placing base plate 40 have an acute included angle, and the operation rod is disposed to incline upwards toward the side where the accommodating space is located, so that the operation rod is not exposed to the base plate box, and further, the operation rod is not exposed to the pump truck. When the backing plate 40 is taken out, the operator needs to rotate the operating member 52 outwards, which is convenient for the operator.

In this embodiment, an end of the rotating shaft 51 away from the operating element 52 is provided with an anti-drop opening, and the dunnage cassette assembly further comprises an anti-drop member, wherein a part of the anti-drop member is located in the anti-drop opening, and the anti-drop member can prevent the rotating shaft 51 from dropping off. When the anti-falling part is a clamp spring 60, the anti-falling opening is a groove matched with the clamp spring 60; when the anti-drop piece is a cotter pin or a pin, the anti-drop opening is an anti-drop hole.

In the embodiment, the rotating shaft 51 and the operating rod are integrally formed, that is, the rotating shaft 51 and the operating rod form the L-shaped handle 50, so that the number of parts is reduced, and the cost is reduced. The end of the operating rod far away from the rotating shaft 51 is provided with a handle, and the handle is convenient for an operator to hold. Of course, the handle may not be provided.

In this embodiment, as shown in fig. 1 and fig. 3, the outer peripheral surface of one end of the rotating shaft 51 has a rotation stopping section, two through holes are provided and are respectively a first through hole 231 and a second through hole 232, the first through hole 231 is a circular hole, a part of the wall surface of the second through hole 232 is a matching surface matched with the rotation stopping section, the second through hole 232 may also be called a rotation stopping hole, and the matching of the rotation stopping hole and one end of the rotating shaft 51 enables the rotating shaft 51 and the limiting member 20 to rotate synchronously. Of course, the rotating shaft 51 may be connected to the through hole by a key.

In this embodiment, the limiting member 20 further includes two engaging lugs 23, the two engaging lugs 23 are located on the left side and the right side of the horizontal plate section, the left engaging lug 23 is provided with a second through hole 232, and the right engaging lug 23 is provided with a first through hole 231. When the operator faces the pick-and-place port, the side where the left hand of the operator is located is left, and the side where the right hand of the operator is located is right.

In the present embodiment, as shown in fig. 1 and 2, the pad box 10 includes a lower cover plate 11, an upper cover plate 12, and a rear cover plate 13, the lower cover plate 11 is U-shaped, the upper cover plate 12 is inverted U-shaped, the rear cover plate 13 is disposed at the rear ends of the lower cover plate 11 and the upper cover plate 12, the lower cover plate 11, the upper cover plate 12, and the rear cover plate 13 enclose an accommodating space, and the front ends of the lower cover plate 11 and the upper cover plate 12 form a pick-and-place opening. The mounting holes are provided on the upper cover plate 12. It should be noted that one side of the pick-and-place opening is front, and the other side opposite to the pick-and-place opening is rear.

The working principle of the pad box assembly is explained as follows:

when the backing plate 40 is taken out, the handle 50 is rotated outwards, the handle 50 drives the limiting piece 20 to rotate, and the backing plate 40 can be taken out; after the backing plate 40 is taken out, the backing plate automatically resets under the action of self gravity, the limiting part 20 and the upper cover plate 12 are attracted together under the action of the adsorption force of the button magnet, and the phenomenon that the limiting part 20 vibrates and generates noise during working is avoided.

When the backing plate 40 is placed, the backing plate 40 pushes the limiting part 20 to rotate towards the inner side, and after the backing plate 40 is placed in place, the limiting part 20 automatically resets under the action of self gravity, and under the action of the adsorption force of the button magnet, the limiting part 20 and the upper cover plate 12 are attracted together, so that the backing plate is effectively prevented from sliding out, and the locking is reliable.

As an alternative embodiment, the magnetic member 30 is provided on the dunnage cassettes 10 above the horizontal sheet section. Preferably, the magnetic member is embedded in the pallet box 10.

The present invention also provides an engineering machine, including: backing plate and above-mentioned backing plate box assembly. The backing plate box assembly utilizes the self gravity of the limiting baffle and the adsorption force of the button magnet to realize the automatic resetting and locking of the limiting baffle, can effectively limit the backing plate, further ensures that the backing plate is reliably locked and is convenient to take and place, and effectively solves the problems of poor reliability, difficult installation and noise emission of the backing plate box assembly in the prior art and the problem that a connecting piece of a pump truck shakes when the pump is pumped.

In the embodiment, the engineering machine is a pump truck or the like, and the pad box is arranged on a chassis of the pump truck.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. one side of the limiting baffle is provided with a round hole, the other side of the limiting baffle is provided with a rotation stopping hole, the top of the limiting baffle is provided with two counter bores, and the two counter bores are used for mounting a button magnet; round holes are formed in two sides of the upper cover plate of the pad box; the handle is installed on the action bars of handle, and the one end that the action bars was kept away from in the pivot of handle has the tangent plane of splining, and the handle drives limit baffle motion, during the assembly, installs button magnet in two counter bores of limit baffle, and the pivot of handle penetrates upper cover plate and limit baffle respectively, and the jump ring is fixed for the one end of keeping away from the action bars in the pivot of handle, prevents that the handle from droing. The motion of the base plate is limited by the limiting baffle, the limiting baffle realizes automatic reset by self gravity, the vibration and noise of the limiting baffle during the operation of the pump truck are eliminated by the limiting baffle by utilizing the adsorption force of the magnet, and the structure is simpler and more reliable.

2. The limiting baffle is arranged on the upper cover plate through a rotating shaft, the structural strength is high, and the locking is reliable.

3. After the base plate is taken out, the limiting baffle can automatically reset under the action of self gravity, and the limiting baffle and the upper cover plate are attracted together under the action of the adsorption force of the button magnet, so that vibration and noise are avoided during working; when the baffle is placed, the limiting baffle does not need to be operated manually, and after the base plate is placed in place, the limiting baffle is automatically reset and locked, so that the use is convenient.

4. The limiting baffle is simple in structure, good in reliability, low in cost, convenient to install, convenient to take and place the base plate, capable of preventing the base plate from being lost in the running process of the pump truck, and meanwhile, small in noise of the base plate box in the pumping process.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (10)

1. A dunnage cassette assembly, comprising:

the mat board box (10) is provided with an accommodating space for accommodating the mat board (40) and an access opening communicated with the accommodating space;

the limiting piece (20) is rotatably arranged on the pad box (10), the limiting piece (20) is provided with a limiting position for blocking the fetching and placing opening and an avoiding position for avoiding the fetching and placing opening, and at the limiting position, the limiting piece (20) can rotate towards the accommodating space and is switched from the limiting position to the avoiding position; the cushion plate box (10) limits the limiting piece (20) to rotate towards the direction far away from the accommodating space.

2. The dunnage cassette assembly of claim 1, wherein the axis of rotation of the retaining member (20) is perpendicular to a pick-and-place direction in which the dunnage (40) is picked and placed, the retaining member (20) being in the retaining position under the weight of the retaining member (20); under the action of an external force, the limiting piece (20) is switched from the limiting position to the avoiding position.

3. The dunnage cassette assembly according to claim 1, characterized in that the retaining element (20) comprises a horizontal plate section (21) and an inclined plate section (22), the inclined plate section (22) being arranged on the side of the horizontal plate section (21) facing the receiving space and being arranged obliquely downwards.

4. The dunnage cassette assembly of claim 2 or 3, further comprising a locking member having a locked state in which the retaining member (20) is locked against movement and an unlocked state in which the retaining member (20) is rotated, the locking member being in the locked state when the retaining member (20) is in the retaining position; when the locking piece is in the unlocking state, the limiting piece (20) can be switched between the limiting position and the avoiding position.

5. The dunnage box assembly according to claim 4, wherein the locking member is a magnetic member (30) disposed on the limiting member (20) or the dunnage box (10), under the action of the gravity of the limiting member (20) and the magnetic force of the magnetic member (30), the magnetic member (30) and the dunnage box (10) are attracted together, the locking member is in the locking state, and the limiting member (20) is in the limiting position; under the action of external force, the magnetic part (30) is separated from the cushion plate box (10), and the limiting part (20) is switched from the limiting position to the avoiding position.

6. Cassette assembly according to claim 5, wherein the magnetic element (30) is embedded in the limit element (20) or in the cassette (10).

7. The pad box assembly according to claim 1, further comprising a rotating shaft (51), wherein the rotating shaft (51) is higher than the access opening, two mounting holes for the rotating shaft (51) to penetrate are formed in the pad box (10), a through hole for the rotating shaft (51) to penetrate is formed in the limiting member (20), and the limiting member (20) and the rotating shaft (51) rotate synchronously.

8. The cushion plate box assembly according to claim 7, further comprising an operating member (52), wherein the operating member (52) is connected to one end of the rotating shaft (51), the operating member (52) is located outside the cushion plate box (10), so that the limiting member (20) is switched from the limiting position to the avoiding position by operating the operating member (52), and/or the outer peripheral surface of one end of the rotating shaft (51) is provided with a rotation stopping tangent plane, the through holes are provided with two first through holes and two second through holes, the first through holes are round holes, and part of the wall surface of the second through holes is a matching surface matched with the rotation stopping tangent plane.

9. The dunnage box assembly of claim 8, wherein when the dunnage box assembly further comprises an operating member (52), an end of the rotating shaft (51) remote from the operating member (52) is provided with an anti-falling opening, and the dunnage box assembly further comprises an anti-falling member, and a part of the anti-falling member is located in the anti-falling opening.

10. A work machine, comprising: a dunnage and the dunnage cassette assembly of any of claims 1 to 9.

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