CN113520734A

CN113520734A - Special bed of transporting of ECMO that stability is strong

Info

Publication number: CN113520734A
Application number: CN202110832056.3A
Authority: CN
Inventors: 卞红; 俞萍; 刘海英; 罗亮; 孙芹
Original assignee: Wuxi No 2 Peoples Hospital
Current assignee: Wuxi No 2 Peoples Hospital
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2021-10-22

Abstract

The invention relates to a special transfer bed for ECMO with strong stability, which comprises a first bottom plate, a second bottom plate and a connecting seat, wherein the front side and the rear side of the connecting seat are respectively and fixedly connected with the first bottom plate and the second bottom plate, so that a medical instrument and a bed body are transferred together, the practicability and the convenience are greatly improved, the occupied area of a supporting rod in a ward during water lifting is reduced, an L-shaped supporting plate can be recovered to the bottom of the bed body when no transfusion is carried out, the utilization rate of the space in the ward is greatly improved, a movable bed board can be recovered according to the space size of an elevator, the bed body is quickly narrowed, the bed body can enter the elevator, a buffering sponge cushion can effectively protect the upper body of a patient during the cardio-pulmonary resuscitation process, the situation that the patient is subjected to secondary injury during the strong repeated pressing process is avoided, the bed is more stable during the dining process, and the medical instrument can be normally operated and used during the transferring process, the height of the bed body can be adjusted.

Description

Special bed of transporting of ECMO that stability is strong

Technical Field

The invention relates to a special transfer bed with strong stability for ECMO, belonging to the technical field of transfer beds.

Background

ECMO is an important technology for treating critically ill patients, the whole machine comprises a host machine, a membrane lung, a centrifugal pump, a water tank, an oxygenator, an oxygen bottle and the like, a ward uses a traditional trolley, but in clinical use, the patient is often subjected to examination when going out and is transported among departments, and the patient often needs to use instruments such as a respirator, a monitor, an injection pump and the like besides ECMO, the existing ECMO transporting bed upper support needs a large amount of manpower to push instrument equipment each time of transporting, the equipment cannot be transported together, the equipment needs to enter an elevator in the transporting process, if the width of the transporting bed cannot be rapidly adjusted, the situation that rescue is delayed when the elevator cannot enter the elevator can be caused, and the situation that the patient is secondarily injured due to the fact that the transporting bed does not have a good damping structure in the operation of cardiac resuscitation in the rescue treatment process, therefore, the special transport bed for ECMO with strong stability is provided.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the existing defects, provide a special transport bed for ECMO with strong stability, and effectively solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides a special transportation bed of ECMO that stability is strong, includes first bottom plate, second bottom plate, connecting seat, both sides respectively with first bottom plate, second bottom plate fixed connection around the connecting seat, first bottom plate and second bottom plate top fixedly connected with brace table respectively, brace table and connecting seat top fixedly connected with bed body, first bottom plate and second bottom plate bottom symmetry respectively are equipped with a universal wheel.

As a further description of the above scheme, a sliding groove is dug in the top of the second bottom plate, the second bottom plate is connected with an extension plate through the sliding groove, the sliding groove penetrates through the left side and the right side of the second bottom plate, and the front side and the rear side of the extension plate are connected with the inner wall of the sliding groove through sliding rails.

As a further description of the above scheme, the top side of the extension plate is dug to be provided with a placement groove, four corners of the bottom of the extension plate are respectively provided with a second universal wheel, the rear side of the second bottom plate is fixedly connected with an operation plate, the right side of the operation plate is fixedly connected with a motor, the top of the operation plate is dug to be provided with a rectangular groove, the left side of the inner wall of the rectangular groove is connected with a threaded rod through a bearing, and the right end of the threaded rod is fixedly connected with an output shaft of the motor.

As a further description of the above scheme, a nut is arranged on the outer wall of the threaded rod, the threaded rod is connected with a movable plate through the nut, an L-shaped support plate is fixedly connected to the top side of the movable plate, a placing rack is fixedly connected to the inner side of the L-shaped support plate, first connecting pipes are symmetrically arranged on the top side of the L-shaped support plate and penetrate through the bottom side of the L-shaped support plate, second connecting pipes are symmetrically arranged on the top side of the placing rack, and the positions of the first connecting pipes correspond to the positions of the second connecting pipes respectively.

As a further description of the above scheme, the bed body includes a fixed bed board and a movable bed board, the movable bed board is symmetrically arranged on two sides of the fixed bed board, the left and right sides of the fixed bed board are respectively provided with a joint slot, the movable bed board is respectively connected with the inner wall of the joint slot in a sliding manner, the outer side of the movable bed board is respectively and fixedly connected with a handrail frame, and one side of the top of the fixed bed board is embedded with a buffering sponge mat.

As a further description of the above scheme, table plates are arranged between the armrest frames in a penetrating manner, positioning bolts are symmetrically arranged on the top sides of the armrest frames in a penetrating manner, threaded pipes are arranged at four corners of each table plate respectively, and the positioning bolts are connected with the threaded pipes in a penetrating manner respectively.

As a further description of the above scheme, the supporting table includes a first trapezoidal housing and fixing columns, the fixing columns are equidistantly arranged in an inner cavity of the first trapezoidal housing and fixedly connected with the bottom side of the inner wall of the first trapezoidal housing, connecting holes are respectively dug in two sides of the bottom of the fixed bed plate, damping springs are fixedly connected to the top ends of the fixing columns, and the top ends of the damping springs are respectively fixedly connected with the top side of the inner wall of the connecting holes.

As a further description of the above scheme, the connecting seat includes a connecting transverse plate and a second trapezoidal housing, the top side of the connecting transverse plate is fixedly connected with the bottom side of the second trapezoidal housing, the bottom side of the inner wall of the second trapezoidal housing is fixedly connected with a hydraulic cylinder, and a storage battery is arranged on one side of the hydraulic cylinder.

As a further description of the above scheme, a socket port is arranged on one side of the outer side of the second trapezoidal housing, the storage battery is electrically connected with the hydraulic cylinder, the socket port and the motor through wires, the top end of the hydraulic cylinder is fixedly connected with a hexagonal block, a hexagonal groove is dug in the middle of the bottom side of the fixed bed body, and the position of the hexagonal block corresponds to the position of the hexagonal groove and is matched with the movable clamping.

The invention has the beneficial effects that:

1. the medical instrument is placed in the placing groove at the top of the extending plate by arranging the placing groove and the second universal wheel, the second universal wheel not only can support the extending plate, but also can move by matching with the first universal wheel, medical personnel do not need to carry medical equipment additionally, the medical instrument and the bed body are enabled to carry out transferring operation together, and the practicability and convenience are greatly improved;

2. by arranging the motor, the threaded rod, the first connecting pipe and the second connecting pipe, the nut on the threaded rod can drive the movable plate to transversely move on the operating plate, so that the L-shaped supporting plate on the operating plate extends out of the left side of the operating plate, the supporting rod for water lifting can penetrate through the first connecting pipe and is clamped and fixed with the second connecting pipe, the occupied area of the supporting rod in a ward during water lifting is reduced, the L-shaped supporting plate can be recovered to the bottom of the bed body when no infusion is carried out, and the utilization rate of space in the ward is greatly improved;

3. by arranging the movable bed board, the joint grooves and the buffering sponge cushion, the width of the bed body can be automatically adjusted, the bed body can be suitable for patients of different statures to lie flat, in the transferring process, the movable bed board can be recovered according to the space size of the elevator, the bed body is rapidly narrowed, the bed body can enter the elevator, in the cardio-pulmonary resuscitation process, the buffering sponge cushion can effectively protect the upper body of the patient, and the situation that the patient is subjected to secondary injury in the strong repeated pressing process is avoided;

4. the dining table plate can be fixed by arranging the dining table plate, the positioning bolts and the threaded pipes, so that the disassembly and assembly are quicker, the dining table plate does not need to be placed at the top of the bed body to occupy the space of the bed body, meanwhile, the dining table plate cannot shake in the dining process, and the dining process is more stable;

5. through setting up damping spring, at the in-process of transporting, damping spring can wholly play absorbing effect to the bed body, and simultaneously, under damping spring's effect, can highly play spacing effect to the lift of fixed bed board, avoid the user of service misoperation to lead to the bed body to rise too high condition emergence, simultaneously at the in-process that the pneumatic cylinder descends, the hexagonal piece of pneumatic cylinder drops hexagonal recess, damping spring can play the effect of buffering to the bed body, avoid the bed body to descend to lead to the patient health to experience the condition emergence of violent vibrations sense too soon.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a schematic diagram of the appearance structure of the strong ECMO transport bed of the present invention.

Fig. 2 is a schematic diagram of a second bottom plate unfolding structure of the transporting bed special for ECMO with strong stability of the present invention.

FIG. 3 is a schematic diagram of a top view structure of a bed body of the transportation bed for ECMO with high stability.

FIG. 4 is a schematic diagram of the internal structure of the first trapezoidal shell of the transport bed special for ECMO with high stability according to the present invention.

FIG. 5 is a schematic sectional view of a connecting seat of the ECMO transport bed with high stability according to the present invention.

Reference numbers in the figures: 1. a first base plate; 2. a second base plate; 3. a connecting seat; 4. a support table; 5. a bed body; 6. a first universal wheel; 7. an extension plate; 8. placing a groove; 9. a second universal wheel; 10. an operation panel; 11. a motor; 12. a rectangular groove; 13. a threaded rod; 14. moving the plate; 15. an L-shaped support plate; 16. placing a rack; 17. a first connecting pipe; 18. a second connecting pipe; 19. fixing the bed plate; 20. a movable bed board; 21. a joint port groove; 22. a handrail frame; 23. a buffer sponge cushion; 24. a dining table plate; 25. positioning the bolt; 26. a threaded pipe; 27. a first trapezoidal shaped housing; 28. fixing a column; 29. connecting holes; 30. a damping spring; 31. connecting the transverse plates; 32. a second trapezoidal shaped housing; 33. a hydraulic cylinder; 34. a storage battery; 35. a receptacle port; 36. a hexagonal prism block; 37. hexagonal grooves.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a special transportation bed of ECMO that stability is strong, includes first bottom plate 1, second bottom plate 2, connecting seat 3, both sides respectively with first

bottom plate

1, 2 fixed connection of second bottom plate around the connecting seat 3, first

bottom plate

1 and 2 tops of first bottom plate are fixedly connected with brace table 4 respectively, brace table 4 and 3 top fixedly connected with beds of connecting seat 5, first

bottom plate

1 and 2 bottoms of second bottom plate are the symmetry respectively and are equipped with first universal wheel 6.

Specifically, as shown in fig. 2, the top of the second bottom plate 2 is dug to be provided with a sliding groove, the second bottom plate 2 is connected with an extension plate 7 through the sliding groove, the sliding groove penetrates through the left side and the right side of the second bottom plate 2, and the front side and the rear side of the extension plate 7 are connected with the inner wall of the sliding groove through sliding rails.

Specifically, as shown in fig. 2, a placing groove 8 is dug at the top of the extending plate 7, a second universal wheel 9 is respectively arranged at four corners at the bottom of the extending plate 7, the extending plate 7 can be pulled out in the transferring process by arranging the placing groove 8 and the second universal wheel 9, a medical instrument is placed in the placing groove 8 at the top of the extending plate 7, the second universal wheel 9 can not only support the extending plate 7 but also move in cooperation with the first universal wheel 6 in the moving process of the bed body 5, medical personnel do not need to additionally transport medical equipment, the medical instrument and the bed body 5 are enabled to be transferred together, the practicability and the convenience are greatly improved, an operating plate 10 is fixedly connected to the rear side of the second bottom plate 2, a motor 11 is fixedly connected to the right side of the operating plate 10, a rectangular groove 12 is dug at the top of the operating plate 10, the left side of the inner wall of the rectangular groove 12 is connected with a threaded rod 13 through a bearing, the right end of the threaded rod 13 is fixedly connected with an output shaft of a motor 11, a nut is arranged on the outer wall of the threaded rod 13, the threaded rod 13 is connected with a movable plate 14 through the nut, the top side of the movable plate 14 is fixedly connected with an L-shaped support plate 15, the inner side of the L-shaped support plate 15 is fixedly connected with a placing rack 16, the top side of the L-shaped support plate 15 is symmetrically provided with a first connecting pipe 17, the first connecting pipe 17 penetrates through the bottom side of the L-shaped support plate 15, the top side of the placing rack 16 is symmetrically provided with a second connecting pipe 18, the positions of the first connecting pipes 17 respectively correspond to the positions of the second connecting pipes 18, the motor 11 is started through the arrangement of the motor 11, the threaded rod 13 is driven by the output shaft of the motor 11, the first connecting pipe 17 and the second connecting pipes 18, the threaded rod 13 can drive the movable plate 14 to move transversely on the operating plate 10, make L type backup pad 15 on the operation panel 10 stretch out the operation panel 10 left side, can run through first connecting pipe 17 with the bracing piece that hangs water usefulness, and fixed with the 18 block of second connecting pipe, the bracing piece is to the area in the ward when reducing to hang water, and when not infusing, can retrieve L type backup pad 15 bed body 5 bottom, the utilization ratio of ward inner space improves greatly.

Specifically, as shown in fig. 3, the bed body 5 includes a fixed bed board 19 and a movable bed board 20, the movable bed board 20 is symmetrically disposed on two sides of the fixed bed board 19, a connection slot 21 is dug on each of the left and right sides of the fixed bed board 19, the movable bed board 20 is slidably connected with the inner wall of the connection slot 21, a handrail frame 22 is fixedly connected to the outer side of the movable bed board 20, a buffering sponge cushion 23 is embedded on one side of the top of the fixed bed board 19, the movable bed board 20, the connection slot 21 and the buffering sponge cushion 23 are disposed, the movable bed board 20 can slide transversely in the connection slot 21, the width of the bed body 5 can be adjusted independently, the bed body can be suitable for patients of different statures to lie flat, the movable bed board 20 can be recovered according to the size of the space of the elevator during the transportation process, the bed body 5 is rapidly narrowed, and the bed body 5 can enter the elevator, in the cardiopulmonary resuscitation process, the buffering sponge cushion 23 can effectively protect the upper body of the patient, and the situation that the patient is injured secondarily in the process of strongly pressing repeatedly is avoided.

Specifically, as shown in fig. 3, it is equipped with dining table board 24 to link up between handrail frame 22, handrail frame 22 top side symmetry link up and is equipped with positioning bolt 25, four corners are equipped with screwed pipe 26 respectively on dining table board 24, positioning bolt 25 respectively with screwed pipe 26 through connection, through setting up dining table board 24, positioning bolt 25 and screwed pipe 26, when the patient has dinner, can insert dining table board 24 between handrail frame 22, then utilize positioning bolt 25 to run through the screwed pipe 26 at handrail frame 22 and dining table board 24 top and be connected, can fix dining table board 24, dismantle the assembly more swift, need not place dining table board 24 and occupy the space of the bed body 5 at the bed body 5 top, can not make dining table board 24 take place the condition of rocking at the in-process of having dinner simultaneously, more stable in the process of having dinner.

Specifically, as shown in fig. 2, the support table 4 includes a first trapezoidal housing 27 and fixing columns 28, the fixing columns 28 are equidistantly disposed in an inner cavity of the first trapezoidal housing 27 and fixedly connected to a bottom side of an inner wall of the first trapezoidal housing 27, two sides of a bottom of the fixed bed plate 19 are respectively provided with a connecting hole 29, a damping spring 30 is fixedly connected to a top end of each fixing column 28, a top end of each damping spring 30 is fixedly connected to a top side of an inner wall of the corresponding connecting hole 29, the damping spring 30 is disposed, during the transfer process, the damping spring 30 can achieve a damping effect on the whole bed body 5, and simultaneously, under the action of the damping spring 30, the lifting height of the fixed bed plate 19 can be limited, so that the situation that the bed body 5 is lifted too high due to misoperation of a user is avoided, and meanwhile, during the descending process of the hydraulic cylinder 33, the six-edge blocks 36 of the hydraulic cylinder 33 fall off the six-edge grooves 37, the damping spring 30 can buffer the bed body 5, and avoid the situation that the body of the patient feels violent vibration due to the over-fast descending of the bed body 5.

Specifically, as shown in fig. 5, the connecting seat 3 includes a connecting transverse plate 31 and a second trapezoidal housing 32, the top side of the connecting transverse plate 31 is fixedly connected to the bottom side of the second trapezoidal housing 32, a hydraulic cylinder 33 is fixedly connected to the bottom side of the inner wall of the second trapezoidal housing 32, a battery 34 is disposed on one side of the hydraulic cylinder 33, a socket port 35 is disposed on one side of the outer side of the second trapezoidal housing 32, the remaining socket port 35 of the battery 34 is arranged, a switch button connected to the battery 34 through a wire is pressed to control the hydraulic cylinder 33, the socket port 35 and the motor 11 to be turned on and off respectively, the battery 34 is turned on to connect the socket port 35, the socket port 35 can be used to connect medical equipment, the medical equipment can be normally operated and used in the transferring process, and the battery 34 is respectively connected to the hydraulic cylinder 33, the socket port 35, the battery 34, the battery 32, the battery and the battery 33, The electric motor 11 is electrically connected, the top end of the hydraulic cylinder 33 is fixedly connected with a hexagonal block 36, a hexagonal groove 37 is dug in the middle of the bottom side of the fixed bed body 5, the position of the hexagonal block 36 corresponds to the position of the hexagonal groove 37, the hexagonal block 36 and the hexagonal groove 37 are movably clamped, the hydraulic cylinder 33 is started by arranging the hydraulic cylinder 33, the hexagonal block 36 and the hexagonal groove 37, the movable end of the hydraulic cylinder 33 can drive the hexagonal block 36 to ascend, the hexagonal block 36 is clamped inside the hexagonal groove 37, the movable end of the hydraulic cylinder 33 can drive the fixed bed board 19 to ascend, and the height of the bed body 5 can be adjusted.

When the invention is used, a switch button connected with a storage battery 34 through a lead is pressed to respectively control a hydraulic cylinder 33, a socket port 35 and a motor 11 to start and close, after the storage battery 34 is started to electrify the socket port 35, medical instruments and equipment can be connected by using the socket port 35, the hydraulic cylinder 33 is started, the movable end of the hydraulic cylinder 33 can drive a hexagonal block 36 to ascend, the movable end of the hydraulic cylinder 33 can drive a fixed bed board 19 to ascend after the hexagonal block 36 is clamped in a hexagonal groove 37, the ascending and descending height of the fixed bed board 19 can be limited under the action of a damping spring 30, when a patient has a meal, a dining table board 24 is inserted between handrail frames 22, then a positioning bolt 25 penetrates through the handrail frames 22 to be connected with a threaded pipe 26 at the top of a dining table board 24, and the movable bed board 20 respectively slides transversely in the joint groove 21, the width of the bed body 5 can be adjusted independently, the bed can be suitable for lying for patients of different statures, in the transferring process, the movable bed board 20 can be recovered according to the space size of the elevator, the bed body 5 can be narrowed rapidly, the bed body 5 can enter the elevator, in the process of cardio-pulmonary resuscitation, the buffering sponge cushion 23 can effectively protect the upper body of the patient, the motor 11 is started, the output shaft of the motor 11 drives the threaded rod 13 to rotate, the nut on the threaded rod 13 can drive the movable plate 14 to move transversely on the operating plate 10, the L-shaped supporting plate 15 on the operating plate 10 extends out of the left side of the operating plate 10, the supporting rod for lifting water can penetrate through the first connecting pipe 17 and is clamped and fixed with the second connecting pipe 18, the medical instrument is placed in the placing groove 8 at the top of the extending plate 7, in the moving process of the bed body 5, the second universal wheel 9 can support the extension plate 7 and can move in cooperation with the first universal wheel 6.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a special transportation bed of ECMO that stability is strong, includes first bottom plate (1), second bottom plate (2), connecting seat (3), its characterized in that, both sides respectively with first bottom plate (1), second bottom plate (2) fixed connection around connecting seat (3), first bottom plate (1) and first bottom plate (2) top fixedly connected with brace table (4) respectively, brace table (4) and connecting seat (3) top fixedly connected with bed body (5), first bottom plate (1) and second bottom plate (2) bottom symmetry respectively are equipped with first universal wheel (6).

2. The strong ECMO dedicated transport bed according to claim 1, wherein: the top of the second bottom plate (2) is provided with a sliding groove in an excavating mode, the second bottom plate (2) is connected with an extension plate (7) through the sliding groove, the sliding groove penetrates through the left side and the right side of the second bottom plate (2), and the front side and the rear side of the extension plate (7) are connected with the inner wall of the sliding groove through sliding rails.

3. The strong ECMO dedicated transport bed according to claim 2, wherein: the utility model discloses a motor, including extension board (7), top side is dug and is equipped with places recess (8), four corners in extension board (7) bottom are equipped with second universal wheel (9) respectively, second bottom plate (2) rear side fixedly connected with operation panel (10), operation panel (10) right side fixedly connected with motor (11), it is equipped with rectangle recess (12) to dig at operation panel (10) top, rectangle recess (12) inner wall left side is connected with threaded rod (13) through the bearing, the output shaft fixed connection of threaded rod (13) right-hand member and motor (11).

4. The special transport bed for ECMO according to claim 3, wherein: be equipped with the nut on threaded rod (13) outer wall, threaded rod (13) are connected with movable plate (14) through the nut, movable plate (14) top side fixedly connected with L type backup pad (15), inboard fixedly connected with rack (16) of L type backup pad (15), L type backup pad (15) top side symmetry is equipped with first connecting pipe (17), L type backup pad (15) bottom side is run through in first connecting pipe (17), rack (16) top side symmetry is equipped with second connecting pipe (18), the position of first connecting pipe (17) corresponds with the position of second connecting pipe (18) respectively.

5. The special transport bed for ECMO according to claim 4, wherein: the bed body (5) includes fixed bed board (19), activity bed board (20) symmetry is equipped with in fixed bed board (19) both sides, fixed bed board (19) left and right sides is dug respectively and is equipped with a mouth piece groove (21), activity bed board (20) respectively with a mouth piece groove (21) inner wall sliding connection, the activity bed board (20) outside is fixedly connected with handrail frame (22) respectively, fixed bed board (19) top one side is inlayed and is equipped with buffering foam-rubber cushion (23).

6. The special transport bed for ECMO according to claim 5, wherein: link up between handrail frame (22) and be equipped with dining table board (24), handrail frame (22) top side symmetry link up and is equipped with positioning bolt (25), four corners are equipped with screwed pipe (26) respectively on dining table board (24), positioning bolt (25) are connected with screwed pipe (26) through connection respectively.

7. The special transport bed for ECMO according to claim 6, wherein: supporting bench (4) include first trapezoidal shell (27), fixed column (28) equidistance sets up in first trapezoidal shell (27) inner chamber, and with first trapezoidal shell (27) inner wall bottom side fixed connection, fixed bed board (19) bottom both sides are dug respectively and are equipped with connecting hole (29), fixed column (28) top fixedly connected with damping spring (30), damping spring (30) top respectively with connecting hole (29) inner wall top side fixed connection.

8. The strong ECMO dedicated transport bed according to claim 7, wherein: the connecting seat (3) comprises a connecting transverse plate (31) and a second trapezoidal shell (32), the top side of the connecting transverse plate (31) is fixedly connected with the bottom side of the second trapezoidal shell (32), a hydraulic cylinder (33) is fixedly connected with the bottom side of the inner wall of the second trapezoidal shell (32), and a storage battery (34) is arranged on one side of the hydraulic cylinder (33).

9. The strong ECMO dedicated transport bed according to claim 8, wherein: second trapezoidal shell (32) outside one side is equipped with socket port (35), battery (34) are respectively through wire and pneumatic cylinder (33), socket port (35), motor (11) electric connection, pneumatic cylinder (33) top fixedly connected with hexagonal piece (36), fixed bed body (5) bottom side middle part is dug and is equipped with hexagonal recess (37), the position of hexagonal piece (36) corresponds with the position of hexagonal recess (37), and matches the activity block.