Efficient and energy-saving soil improvement and synergy device for land reclamation

Abstract

The utility model discloses an efficient energy-saving soil improvement and efficiency improvement device for land reclamation, which comprises a rotary cultivator, a support frame is arranged on a top shell of the rotary cultivator, and an inner cavity of the support frame is communicated with the bottom of the rotary cultivator; a material uniformizing plate is mounted on the inner side of the supporting frame, and the material uniformizing plate is detachably connected with the supporting frame; a supporting frame is arranged on the rotary cultivator top shell, a material box is arranged at the top of the supporting frame, a material blocking plate is arranged at the bottom end of the material box and is telescopically connected with the material box, a vibration motor is arranged on the side face of the material box, a storage battery is arranged on the rotary cultivator top shell, and the vibration motor is electrically connected with the storage battery. The material box is installed on the top shell of the rotary cultivator, the material box is communicated with the bottom of the rotary cultivator, and the material uniformizing plate is arranged in the top shell of the rotary cultivator, so that it can be guaranteed that a modifying agent in the material box can evenly fall into soil through the material uniformizing plate, and the purpose of applying the soil modifying agent to the soil is achieved; by means of the structure, the modifying agent is applied to the soil while the soil is turned, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of soil improvement technology, specifically to a high-efficiency and energy-saving land remediation and soil improvement efficiency enhancement device. Background Technology

[0002] Soil improvement is a core component of land consolidation projects, aiming to enhance soil fertility and improve its physical and chemical properties through physical, chemical, and biological means. Traditional soil improvement methods mainly rely on tillage machinery (such as rotary tillers and plows) combined with the manual application of organic fertilizers or chemical amendments. However, these methods are inefficient; therefore, some new types of soil improvement equipment have emerged on the market.

[0003] For example, utility model patent CN214599887U discloses a soil amendment microbial amendment application device, including a shell with a cavity inside. A material tank is fixedly installed at one end of the cavity, and an inlet is fixedly installed on the upper part of the shell, penetrating the upper wall of the shell and communicating with the material tank. A push plate is rotatably installed inside the material tank. A nozzle is also installed on the side wall of the shell, penetrating the side wall of the shell and communicating with the material tank. Several stirring blades are circumferentially fixed on the side wall of the push plate near the nozzle. This patented solution can complete the spraying of the agent by moving the device, without the need for any motor or water pump equipment, which is energy-saving and environmentally friendly. During the agent spraying process, the agent is continuously stirred to ensure that the microorganisms are evenly distributed in the agent before being sprayed, avoiding the problem of uneven microbial distribution affecting the soil amendment effect.

[0004] The aforementioned patent provides a device for soil improvement. This soil improvement device mainly improves soil by spraying liquid soil conditioner. However, in the actual process of soil improvement, the liquid soil conditioner is most effective when sprayed after the soil has been turned over. However, the existing soil improvement device is not convenient to move on the turned soil, which makes the spraying of liquid soil conditioner time-consuming and labor-intensive. Furthermore, this soil improvement device is not convenient to apply solid soil conditioner, which makes it impossible to efficiently complete the application of soil conditioner. Utility Model Content

[0005] The purpose of this utility model is to provide a high-efficiency and energy-saving land remediation and soil improvement device, which aims to improve the problem that existing soil improvement devices are inconvenient to move on the turned soil and inconvenient to apply solid amendments, resulting in the inefficiency of completing the amendment application operation.

[0006] This utility model is implemented as follows:

[0007] A high-efficiency and energy-saving land remediation and soil improvement device includes a rotary tiller. A support frame is mounted on the top shell of the rotary tiller, and the inner cavity of the support frame communicates with the bottom of the rotary tiller. A material distribution plate is installed inside the support frame and is detachably connected to the support frame. A material box is located at the top of the support frame, and a blocking plate is located at the bottom of the material box. The blocking plate is retractably connected to the material box. A vibration motor is located on the side of the material box. A battery is mounted on the top shell of the rotary tiller, and the vibration motor is electrically connected to the battery.

[0008] Preferably, the support frame at the top of the rotary tiller has a first insertion hole in the middle, and the inside of the rotary tiller has symmetrical slots on both sides of the first insertion hole. The support frame has a material discharge hole that penetrates the top shell of the rotary tiller.

[0009] Preferably, the material leveling plate has uniformly provided through holes on its surface, and the material leveling plate has symmetrically provided retaining edges on both sides. The material leveling plate is inserted into the material box through the first insertion hole, and the retaining edges are engaged in the inner side of the retaining groove.

[0010] Preferably, the outer side of the material distribution plate is provided with an end plate, the middle of the end plate is provided with a handle, and the two sides of the end plate are symmetrically provided with positioning plates, and the positioning plates are provided with positioning knobs.

[0011] Preferably, a second insertion hole is provided on the back of the material box near the bottom, and a limiting knob is provided on both sides of the material box at the position of the second insertion hole; a plug ring is provided at the bottom of the material box, the plug ring is inserted into the inside of the material drop hole, and a fixing foot is provided on both sides of the bottom of the material box, and the fixing foot is provided with a plurality of fixing holes.

[0012] Preferably, the blocking plate has guide plates on both sides, and a guide hole in the middle of the guide plate, which is fitted onto the limiting knob; the blocking plate has a handle at one end facing outward.

[0013] Preferably, the vibratory motor has a mounting foot on one side of the material box, and a connecting wire is provided on the side of the vibratory motor, with a connecting plug at the end of the connecting wire.

[0014] Preferably, the battery has mounting plates at the bottom of both sides, the mounting plates have multiple mounting holes, and the battery has a connection slot at the top, which is connected to a connection plug.

[0015] Preferably, it also includes a cover plate, the top of the material box is provided with an opening, and the bottom end of the cover plate is inserted into the top opening of the material box. The top of both sides of the material box are provided with clamping knobs, and the clamping knobs abut against the cover plate.

[0016] Preferably, the bottom end of the cover plate is provided with a retaining ring, which is inserted into the opening at the top of the material box, and the upper surface of the cover plate is provided with a handle.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model installs a material box on the top shell of a rotary tiller, which is connected to the bottom of the rotary tiller. The top shell of the rotary tiller is equipped with a material distribution plate. This ensures that the soil conditioner inside the material box can fall evenly into the soil through the distribution plate, thus achieving the purpose of applying soil conditioner. Furthermore, this structure allows for the application of soil conditioner while turning the soil, simplifying operation and greatly improving the efficiency of soil conditioner application. It also avoids the cumbersome process of applying soil conditioner using separate equipment, saving manpower and resources, and achieving energy conservation.

[0019] 2. This utility model provides a cap at the top of the material box, thereby ensuring that the modifier remains stable inside the material box, which facilitates the stable application of the modifier. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the rotary tiller of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the uniform material plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the material box of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the material blocking plate of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the vibration motor of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the storage battery of this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the cover plate of this utility model.

[0028] In the diagram: 1. Rotary tiller; 11. Support frame; 12. First insertion hole; 13. Slot; 14. Material drop hole; 2. Material distribution plate; 21. Edge clamp; 22. Positioning plate; 23. End plate; 24. Handle; 25. Positioning knob; 3. Material box; 31. Pressing knob; 32. Second insertion hole; 33. Limit knob; 34. Connecting ring; 35. Fixing foot; 36. Fixing hole; 4. Blocking plate; 41. Guide plate; 42. Guide hole; 43. Handle; 5. Vibration motor; 51. Mounting foot; 52. Connecting wire; 53. Connecting plug; 6. Battery; 61. Connecting slot; 62. Mounting plate; 63. Mounting hole; 7. Cover plate; 71. Inserting ring; 72. Handle. Detailed implementation method:

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0031] Example 1

[0032] like Figure 1 and Figure 2 As shown, a high-efficiency and energy-saving soil improvement device for land consolidation includes a rotary tiller 1, which is conveniently mounted on a tractor to turn over the soil. A support frame 11 is provided on the top shell of the rotary tiller 1, and the inner cavity of the support frame 11 communicates with the bottom of the rotary tiller 1. A distribution plate 2 is installed inside the support frame 11, and the distribution plate 2 is detachably connected to the support frame 11. A material box 3 is provided on the top of the support frame 11. The support frame 11 facilitates the installation of the distribution plate 2 and the material box 3, allowing solid soil conditioner to fall through the support frame 11 into the bottom of the rotary tiller 1, facilitating the addition of soil conditioner to the tilled soil. The distribution plate 2 facilitates the even spreading of the soil conditioner on the soil. A blocking plate 4 is provided at the bottom of the material box 3, and the blocking plate 4 is retractably connected to the material box 3. The blocking plate 4 facilitates sealing the bottom of the material box 3 when it is necessary to stop spreading the soil conditioner. A vibration motor 5 is provided on the side of the material box 3, which facilitates the vibration of the material box 3, ensuring that the soil conditioner falls evenly into the soil. The rotary tiller 1 has a battery 6 on its top shell. The vibrating motor 5 is electrically connected to the battery 6, which is used to supply power to the vibrating motor 5.

[0033] like Figure 2As shown, the support frame 11 at the top of the rotary tiller 1 has a first insertion hole 12 in the middle. The first insertion hole 12 is for easy installation of the material distribution plate 2, and also for easy replacement of material distribution plates 2 of different specifications according to usage requirements. The rotary tiller 1 has symmetrical slots 13 on both sides of the first insertion hole 12 inside, which facilitate the stable installation of the material distribution plate 2. The support frame 11 has a material discharge hole 14 penetrating the top shell of the rotary tiller 1 in the middle, which facilitates the discharge of solid soil conditioner into the soil tilled by the rotary tiller 1.

[0034] like Figure 3 As shown, the uniform distribution plate 2 has evenly distributed through holes on its surface, allowing the solid soil conditioner to be evenly distributed onto the soil. Symmetrically arranged retaining edges 21 are provided on both sides of the uniform distribution plate 2. The plate 2 is inserted into the material box 3 through the first insertion hole 12, and the retaining edges 21 engage with the inner side of the retaining groove 13. This structure facilitates stable assembly and disassembly of the uniform distribution plate 2. An end plate 23 is provided on the outer side of the uniform distribution plate 2, with a handle 24 in the middle. The end plate 23, in conjunction with the handle 24, facilitates pulling the uniform distribution plate 2, making assembly and disassembly easy. Symmetrically arranged positioning plates 22 are provided on both sides of the end plate 23, with positioning knobs 25 on each plate. The positioning plates 22 and positioning knobs 25 facilitate fixing the position of the uniform distribution plate 2.

[0035] like Figure 4 As shown, a second insertion hole 32 is provided on the back of the material box 3 near the bottom. The second insertion hole 32 facilitates the installation of the blocking plate 4, allowing the blocking plate 4 to seal or open the bottom opening of the material box 3. Limiting knobs 33 are provided on both sides of the material box 3, aligned with the second insertion hole 32; the limiting knobs 33 prevent the blocking plate 4 from easily detaching from the material box 3. A plug-in ring 34 is provided at the bottom of the material box 3, which inserts into the inside of the material drop hole 14, ensuring stable assembly, disassembly, and use of the material box 3. Fixing feet 35 are provided on both sides of the bottom of the material box 3, and multiple fixing holes 36 are provided on the fixing feet 35. The fixing feet 35 and fixing holes 36 facilitate the fixing of the material box 3 with bolts.

[0036] like Figure 5 As shown, guide plates 41 are provided on both sides of the blocking plate 4, and guide holes 42 are provided in the middle of the guide plates 41. The guide holes 42 are fitted onto the limiting knob 33. This structure facilitates the extension and retraction of the blocking plate 4 and also makes it easy to fix the blocking plate 4, ensuring the stable use of the blocking plate 4. A handle 43 is provided at the outer end of the blocking plate 4, which facilitates the pulling of the blocking plate 4 and makes it easy to use.

[0037] like Figure 6 As shown, the vibratory motor 5 has a mounting foot 51 on one side of the material box 3, which facilitates the installation of the vibratory motor 5. The vibratory motor 5 also has a connecting wire 52 on its side, with a connecting plug 53 at one end. The connecting wire 52 and the connecting plug 53 facilitate the disassembly, assembly, and use of the vibratory motor 5.

[0038] like Figure 7 As shown, mounting plates 62 are provided at the bottom of both sides of the battery 6. Multiple mounting holes 63 are provided on the mounting plates 62. The mounting plates 62 and mounting holes 63 facilitate the fixing of the battery 6 with bolts, ensuring the stable use of the battery 6. A connecting slot 61 is provided at the top of the battery 6. The connecting slot 61 is connected to a connecting plug 53, facilitating the battery 6 to supply power to the vibration motor 5.

[0039] Example 2

[0040] like Figure 1 and Figure 2 As shown, a high-efficiency and energy-saving soil improvement device for land consolidation includes a rotary tiller 1, which is conveniently mounted on a tractor to turn over the soil. A support frame 11 is provided on the top shell of the rotary tiller 1, and the inner cavity of the support frame 11 communicates with the bottom of the rotary tiller 1. A distribution plate 2 is installed inside the support frame 11, and the distribution plate 2 is detachably connected to the support frame 11. A material box 3 is provided on the top of the support frame 11. The support frame 11 facilitates the installation of the distribution plate 2 and the material box 3, allowing solid soil conditioner to fall through the support frame 11 into the bottom of the rotary tiller 1, facilitating the addition of soil conditioner to the tilled soil. The distribution plate 2 facilitates the even spreading of the soil conditioner on the soil. A blocking plate 4 is provided at the bottom of the material box 3, and the blocking plate 4 is retractably connected to the material box 3. The blocking plate 4 facilitates sealing the bottom of the material box 3 when it is necessary to stop spreading the soil conditioner. A vibration motor 5 is provided on the side of the material box 3, which facilitates the vibration of the material box 3, ensuring that the soil conditioner falls evenly into the soil. The rotary tiller 1 has a battery 6 on its top shell. The vibrating motor 5 is electrically connected to the battery 6, which is used to supply power to the vibrating motor 5.

[0041] like Figure 2 As shown, the support frame 11 at the top of the rotary tiller 1 has a first insertion hole 12 in the middle. The first insertion hole 12 is for easy installation of the material distribution plate 2, and also for easy replacement of material distribution plates 2 of different specifications according to usage requirements. The rotary tiller 1 has symmetrical slots 13 on both sides of the first insertion hole 12 inside, which facilitate the stable installation of the material distribution plate 2. The support frame 11 has a material discharge hole 14 penetrating the top shell of the rotary tiller 1 in the middle, which facilitates the discharge of solid soil conditioner into the soil tilled by the rotary tiller 1.

[0042] like Figure 3As shown, the uniform distribution plate 2 has evenly distributed through holes on its surface, allowing the solid soil conditioner to be evenly distributed onto the soil. Symmetrically arranged retaining edges 21 are provided on both sides of the uniform distribution plate 2. The plate 2 is inserted into the material box 3 through the first insertion hole 12, and the retaining edges 21 engage with the inner side of the retaining groove 13. This structure facilitates stable assembly and disassembly of the uniform distribution plate 2. An end plate 23 is provided on the outer side of the uniform distribution plate 2, with a handle 24 in the middle. The end plate 23, in conjunction with the handle 24, facilitates pulling the uniform distribution plate 2, making assembly and disassembly easy. Symmetrically arranged positioning plates 22 are provided on both sides of the end plate 23, with positioning knobs 25 on each plate. The positioning plates 22 and positioning knobs 25 facilitate fixing the position of the uniform distribution plate 2.

[0043] like Figure 4 As shown, a second insertion hole 32 is provided on the back of the material box 3 near the bottom. The second insertion hole 32 facilitates the installation of the blocking plate 4, allowing the blocking plate 4 to seal or open the bottom opening of the material box 3. Limiting knobs 33 are provided on both sides of the material box 3, aligned with the second insertion hole 32; the limiting knobs 33 prevent the blocking plate 4 from easily detaching from the material box 3. A plug-in ring 34 is provided at the bottom of the material box 3, which inserts into the inside of the material drop hole 14, ensuring stable assembly, disassembly, and use of the material box 3. Fixing feet 35 are provided on both sides of the bottom of the material box 3, and multiple fixing holes 36 are provided on the fixing feet 35. The fixing feet 35 and fixing holes 36 facilitate the fixing of the material box 3 with bolts.

[0044] like Figure 5 As shown, guide plates 41 are provided on both sides of the blocking plate 4, and guide holes 42 are provided in the middle of the guide plates 41. The guide holes 42 are fitted onto the limiting knob 33. This structure facilitates the extension and retraction of the blocking plate 4 and also makes it easy to fix the blocking plate 4, ensuring the stable use of the blocking plate 4. A handle 43 is provided at the outer end of the blocking plate 4, which facilitates the pulling of the blocking plate 4 and makes it easy to use.

[0045] like Figure 6 As shown, the vibratory motor 5 has a mounting foot 51 on one side of the material box 3, which facilitates the installation of the vibratory motor 5. The vibratory motor 5 also has a connecting wire 52 on its side, with a connecting plug 53 at one end. The connecting wire 52 and the connecting plug 53 facilitate the disassembly, assembly, and use of the vibratory motor 5.

[0046] like Figure 7 As shown, mounting plates 62 are provided at the bottom of both sides of the battery 6. Multiple mounting holes 63 are provided on the mounting plates 62. The mounting plates 62 and mounting holes 63 facilitate the fixing of the battery 6 with bolts, ensuring the stable use of the battery 6. A connecting slot 61 is provided at the top of the battery 6. The connecting slot 61 is connected to a connecting plug 53, facilitating the battery 6 to supply power to the vibration motor 5.

[0047] like Figure 1 and Figure 2As shown, it also includes a cover plate 7, with an opening at the top of the material box 3, and the bottom of the cover plate 7 is inserted into the opening at the top of the material box 3. There are clamping knobs 31 on the top of both sides of the material box 3, and the clamping knobs 31 are pressed against the cover plate 7. This structure ensures that the cover plate 7 is stably installed at the opening at the top of the material box 3.

[0048] like Figure 8 As shown, the bottom of the cover plate 7 is provided with a retaining ring 71, which is inserted into the opening at the top of the material box 3 to ensure stable installation of the cover plate 7. The upper surface of the cover plate 7 is provided with a handle 72, which facilitates the disassembly, assembly, and use of the cover plate 7.

[0049] Working principle: During use, connect the rotary tiller 1 to the tractor. Then, seal the opening at the bottom of the feed hopper 3 using the blocking plate 4. Pour solid soil conditioner into the feed hopper 3, ensuring sufficient quantity. Next, insert the distribution plate 2 with an appropriate aperture into the support frame 11. Before the tractor and rotary tiller 1 start working, pull the blocking plate 4 to open the bottom opening of the feed hopper 3, allowing the solid conditioner to fall onto the distribution plate 2. Then, fix the position of the blocking plate 4 and start the vibration motor 5, allowing the soil conditioner to evenly pass through the distribution plate 2 and fall onto the soil. This process simultaneously turns the soil and adds soil conditioner.

[0050] In summary, compared with the prior art, this application, by installing a material box 3 on the top shell of the rotary tiller 1, with the material box 3 communicating with the bottom of the rotary tiller 1, and a material distribution plate 2 inside the top shell of the rotary tiller 1, ensures that the soil conditioner inside the material box 3 can fall evenly into the soil through the material distribution plate 2, thus achieving the purpose of applying soil conditioner to the soil. Moreover, this structure allows the soil conditioner to be applied to the soil while turning it over, simplifying the operation and greatly improving the efficiency of soil conditioner application. It also avoids the cumbersome process of applying soil conditioner using separate equipment, saving manpower and resources, and playing an energy-saving role.

[0051] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency and energy-saving land consolidation and soil improvement device, comprising a rotary tiller (1), characterized in that, The rotary tiller (1) has a support frame (11) on its top shell, and the inner cavity of the support frame (11) is connected to the bottom of the rotary tiller (1). A material distribution plate (2) is installed on the inner side of the support frame (11), and the material distribution plate (2) is detachably connected to the support frame (11). A material box (3) is provided on the top of the support frame (11), and a blocking plate (4) is provided at the bottom of the material box (3). The blocking plate (4) is telescopically connected to the material box (3). A vibration motor (5) is provided on the side of the material box (3). A storage battery (6) is provided on the top shell of the rotary tiller (1), and the vibration motor (5) is electrically connected to the storage battery (6).

2. The high-efficiency and energy-saving land remediation and soil improvement device according to claim 1, characterized in that, The rotary tiller (1) has a first insertion hole (12) in the middle of the support frame (11) at the top. The rotary tiller (1) has symmetrical slots (13) on both sides of the first insertion hole (12) inside. The support frame (11) has a material drop hole (14) that penetrates the top shell of the rotary tiller (1) in the middle.

3. The high-efficiency and energy-saving land remediation and soil improvement device according to claim 2, characterized in that, The material distribution plate (2) has through holes evenly distributed on its surface. The material distribution plate (2) has symmetrically arranged retaining edges (21) on both sides. The material distribution plate (2) is inserted into the material box (3) through the first insertion hole (12). The retaining edges (21) are inserted into the inner side of the retaining groove (13).

4. The high-efficiency and energy-saving land remediation and soil improvement device according to claim 3, characterized in that, The material distribution plate (2) has an end plate (23) on its outer side, a handle (24) in the middle of the end plate (23), and positioning plates (22) symmetrically arranged on both sides of the end plate (23). The positioning plate (22) is provided with a positioning knob (25).

5. The high-efficiency and energy-saving land remediation and soil improvement device according to claim 2, characterized in that, The material box (3) has a second insertion hole (32) near the bottom on the back, and a limiting knob (33) is provided on both sides of the material box (3) aligned with the second insertion hole (32); the bottom of the material box (3) is provided with a plug ring (34), which is inserted into the inside of the material drop hole (14); the bottom of both sides of the material box (3) is provided with fixing feet (35), and the fixing feet (35) are provided with multiple fixing holes (36).

6. The high-efficiency and energy-saving land remediation and soil improvement device according to claim 5, characterized in that, The blocking plate (4) has guide plates (41) on both sides, and a guide hole (42) is provided in the middle of the guide plate (41). The guide hole (42) is sleeved on the limiting knob (33). The blocking plate (4) has a handle (43) at one end facing outward.

7. The high-efficiency and energy-saving land consolidation and soil improvement device according to claim 1, characterized in that, The vibrating motor (5) has a mounting foot (51) on one side of the material box (3), and the vibrating motor (5) has a connecting wire (52) on the side, with a connecting plug (53) at the end of the connecting wire (52).

8. The high-efficiency and energy-saving land remediation and soil improvement device according to claim 7, characterized in that, The battery (6) has mounting plates (62) at the bottom of both sides, and the mounting plates (62) have multiple mounting holes (63). The battery (6) has a connection slot (61) at the top, and the connection slot (61) is connected to the connection plug (53).

9. A high-efficiency and energy-saving land remediation and soil improvement device according to any one of claims 1-8, characterized in that, It also includes a cover plate (7), the top of the material box (3) is open, and the bottom of the cover plate (7) is inserted into the top opening of the material box (3). The top of both sides of the material box (3) are provided with clamping knobs (31), and the clamping knobs (31) abut against the cover plate (7).

10. A high-efficiency and energy-saving land remediation and soil improvement device according to claim 9, characterized in that, The bottom end of the cover plate (7) is provided with a ring (71), which is inserted into the top opening of the material box (3). The upper surface of the cover plate (7) is provided with a handle (72).

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