Rapid trepanning device for aeration pipeline of biochemical pool

Abstract

The utility model discloses a quick trepanning device of a biochemical pool aeration pipeline, the quick trepanning device comprises a trepanning machine, a support frame assembly and an aeration pipeline, the trepanning machine is in contact with the support frame assembly, the aeration pipeline is fixedly connected with the support frame assembly, the trepanning machine comprises a mobile headstock and a support rod, the mobile headstock is movably arranged at one end of the support rod, and the support rod is fixedly connected with the support frame assembly. A trepanning drill bit is arranged at the bottom of the movable vehicle head, the trepanning drill bit is arranged right above the aeration pipeline, and the supporting frame assembly comprises a supporting frame, a first fixing piece and a second fixing piece; the first fixing piece and the second fixing piece are movably arranged on the supporting frame assembly, the aeration pipeline can be fixedly connected in the first fixing piece and the second fixing piece in a sleeved mode, and the first fixing piece and the second fixing piece can drive the aeration pipeline to rapidly move on the supporting frame to the position under a trepanning drill bit at the bottom of the movable vehicle head in a translation mode. Therefore, the aeration pipeline can be rapidly holed, and the holing efficiency of the aeration pipeline is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline construction, in particular to a rapid hole opening device for an aeration pipeline of a biochemical pool. Background Art

[0002] The process of sewage treatment in biochemical pools is often accompanied by aeration. Aeration refers to the forced introduction of air into sewage through certain methods and equipment, so that the sewage in the biochemical pool contacts the air, oxygenates it, and stirs the liquid, thereby accelerating the transfer of oxygen in the air to the liquid to prevent suspended objects in the pool from sinking. Aeration often needs to be achieved by aeration pipes, which refer to pipes that transport air to the biochemical pool. Aeration pipes are connected to other pipes and equipped with various equipment to achieve aeration, which is an indispensable and important part of the aeration process.

[0003] However, in the existing aeration process, it is often necessary to first drill holes in the aeration pipe to connect other pipes. The existing method of drilling holes in the aeration pipe is generally to directly use a hole drill to drill a hole in the aeration pipe, and then move the hole drill along the aeration pipe to drill another hole. That is, the hole drill has to be moved once for each hole drilled. This hole drilling method is inefficient, and the time and labor costs consumed are relatively high. In addition, the hole drilling position must be recalibrated each time the hole drill is moved, which is very inconvenient. Therefore, there is an urgent need for a quick hole drilling device with high hole drilling efficiency and time-saving and labor-saving to solve the above problems. Utility Model Content

[0004] In order to solve the problems arising from the above-mentioned background technology, the purpose of the utility model is to provide a rapid hole-opening device for the aeration pipe of a biochemical pond, which realizes rapid hole-opening of the aeration pipe through the cooperation of a hole-opening machine and a support frame assembly, thereby improving the hole-opening efficiency of the aeration pipe and achieving the effect of saving time and effort.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A rapid hole-making device for an aeration pipe of a biochemical pond, the rapid hole-making device comprising a hole-making machine, a support frame assembly, and an aeration pipe, the hole-making machine and the support frame assembly are in contact with each other, the aeration pipe and the support frame assembly are fixedly connected, the hole-making machine comprises a movable vehicle head and a support rod, the movable vehicle head is movably arranged at one end of the support rod, a hole-making drill bit is arranged at the bottom of the movable vehicle head, the hole-making drill bit is arranged directly above the aeration pipe, the support frame assembly comprises a support frame, a first fixing member, and a second fixing member, the first fixing member and the second fixing member are movably arranged above the support frame, and the aeration pipe is fixedly sleeved inside the first fixing member and the second fixing member.

[0007] Furthermore, two connecting slide rails are provided at the upper end of the support frame, and the first fixing member and the second fixing member are movably connected to the two connecting slide rails. The first fixing member includes two groups of first movable pulleys, a first connecting plate, a first limiting member, and a first limiting ring. The two groups of first movable pulleys are respectively arranged on both sides of the first connecting plate, and the two groups of first movable pulleys are movably connected to the two connecting slide rails. The first limiting member is fixedly arranged at the upper end of the first connecting plate, and the first limiting ring is fixedly arranged at the upper end of the first limiting member, and the aeration pipe is fixedly sleeved on the inside of the first limiting ring.

[0008] Furthermore, the second fixing member includes two groups of second movable pulleys, a second connecting plate, a second limiting member, and a second limiting ring. The two groups of second movable pulleys are respectively arranged on both sides of the second connecting plate. The two groups of second movable pulleys are movably connected to two connecting slide rails. The second limiting member is fixedly arranged at the upper end of the second connecting plate, the second limiting ring is fixedly arranged at the upper end of the second limiting member, and the aeration pipe is fixedly sleeved on the inside of the second limiting ring.

[0009] Further, the first limiting ring includes a first upper ring, a first rotating connecting piece, and a first lower ring. The bottom of the first lower ring is fixedly connected to the upper end of the first limiting piece. The first rotating connecting piece is arranged between the first upper ring and the first lower ring. The first upper ring is movably connected to the first lower ring through the first rotating connecting piece. A first protrusion is provided at one end of the first upper ring, and a first groove is provided at one end of the first lower ring. One end of the first upper ring is movably clamped with one end of the first lower ring through the cooperation of the first protrusion and the first groove.

[0010] Further, the second limiting ring includes a second upper ring, a second rotating connecting piece, and a second lower ring. The bottom of the second lower ring is fixedly connected to the upper end of the second limiting piece. The second rotating connecting piece is arranged between the second upper ring and the second lower ring. The second upper ring is movably connected to the second lower ring through the second rotating connecting piece. A second protrusion is provided at one end of the second upper ring, and a second groove is provided at one end of the second lower ring. One end of the second upper ring is movably engaged with one end of the second lower ring through the cooperation of the second protrusion and the second groove.

[0011] Furthermore, the hole opening machine also includes an opening and closing button, an indicator light, a handheld joystick, and a drive motor. The opening and closing button is fixedly arranged on the surface of the mobile vehicle head, the indicator light is arranged above the opening and closing button, the handheld joystick is fixedly arranged on one side of the mobile vehicle head, and the drive motor is fixedly installed on the back of the mobile vehicle head.

[0012] Furthermore, the hole-opening machine also includes a support plate and a ground-contacting bottom plate. A connecting piece is provided at the bottom of the support plate. The support plate is movably connected to the support rod through the connecting piece. The upper surface of the support plate is in contact with and fits with the bottom surface of the support frame. The other end of the support rod is fixedly connected to the ground-contacting bottom plate, and the bottom surface of the ground-contacting bottom plate is in contact with and fits with the ground.

[0013] The beneficial effects of the utility model are:

[0014] (1) The support frame assembly of the utility model includes a support frame, a first fixing member, and a second fixing member. The first fixing member and the second fixing member are respectively provided with a first movable pulley and a first limiting ring and a second movable pulley and a second limiting ring. The first limiting ring and the second limiting ring can fix the aeration pipe inside the first fixing member and the second fixing member, so that the aeration pipe can be stably fixed on the first fixing member and the second fixing member, and the first movable pulley and the second movable pulley cooperate with the connecting slide rail at the upper end of the support frame, so that the first fixing member and the second fixing member can carry the aeration pipe on the connecting slide rail. After the worker uses the hole-opening machine to open a hole in the aeration pipe, the worker moves the first fixing member and the second fixing member to make the aeration pipe move linearly on the connecting slide rail to directly below the hole-opening drill bit, so that the hole-opening machine can open the next hole in the aeration pipe, replacing the traditional method of opening holes in the aeration pipe by a mobile hole-opening machine. There is no need to calibrate the hole positions on the aeration pipe multiple times, which ensures a certain hole-opening accuracy, effectively improves the hole-opening efficiency of the aeration pipe, and reduces the time cost and labor cost required for hole-opening.

[0015] (2) The hole punching machine of the utility model includes a support plate and a support rod. A connecting piece is provided at the bottom of the support plate. The support plate can be translated up and down on the support rod through the connecting piece to adjust the height of the support plate, so as to better fit the support plate to the bottom of the support frame. By fitting the support plate to the bottom of the support frame to stabilize the support frame as a whole, the hole punching machine can prevent the support frame from vibrating greatly during the hole punching process, thereby preventing the hole punching work from being affected. The overall stability of the support frame during the hole punching process can be effectively guaranteed, thereby ensuring the hole punching accuracy of the hole punching machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a rapid hole-opening device for an aeration pipeline of a biochemical pool according to the utility model;

[0017] Figure 2 It is a front schematic diagram of a rapid hole-opening device for an aeration pipe of a biochemical pool according to the utility model;

[0018] Figure 3 It is a side schematic diagram of a rapid hole-opening device for an aeration pipeline of a biochemical pool according to the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of the hole-opening machine in the utility model;

[0020] Figure 5 It is a schematic diagram of the overall structure of the support frame assembly in the utility model;

[0021] Figure 6 It is a schematic diagram of the overall structure of the first limiting ring and the second limiting ring in the utility model.

[0022] In the figure, 1 is a drilling machine, 101 is a mobile vehicle head, 1011 is a drilling drill, 102 is a support rod, 103 is an opening and closing button, 104 is an indicator light, 105 is a handheld rocker, 106 is a driving motor, 107 is a support plate, 1071 is a connecting member, 108 is a ground contact bottom plate, 2 is a support frame assembly, 3 is a support frame, 301 is a connecting slide rail, 4 is a first fixing member, 401 is a first moving pulley, 402 is a first connecting plate, 403 is a first limiting member, 404 is a first Limiting ring, 4041 is the first upper ring, 4042 is the first rotating connecting member, 4043 is the first lower ring, 4044 is the first protrusion, 4045 is the first groove, 5 is the second fixing member, 501 is the second movable pulley, 502 is the second connecting plate, 503 is the second limiting member, 504 is the second limiting ring, 5041 is the second upper ring, 5042 is the second rotating connecting member, 5043 is the second lower ring, 5044 is the second protrusion, 5045 is the second groove, and 6 is the aeration pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] As attached Figure 1-6As shown, in an embodiment of the utility model, a rapid hole-opening device for an aeration pipe of a biochemical pond is provided, the rapid hole-opening device comprises a hole-opening machine 1, a support frame assembly 2, and an aeration pipe 6, the hole-opening machine 1 and the support frame assembly 2 are in contact with each other, the aeration pipe 6 and the support frame assembly 2 are fixedly connected, the hole-opening machine 1 comprises a mobile vehicle head 101 and a support rod 102, the mobile vehicle head 101 is movably arranged at one end of the support rod 102, a hole-opening drill bit 1011 is arranged at the bottom of the mobile vehicle head 101, and the hole-opening drill bit 1011 is arranged directly above the aeration pipe 6, the support frame assembly 2 comprises a support frame 3, a first fixing member 4, and a second fixing member 5, the first fixing member 4 and the second fixing member 5 are movably arranged above the support frame 3, and the aeration pipe 6 is fixedly sleeved inside the first fixing member 4 and the second fixing member 5.

[0025] Specifically, a plurality of holes can be opened on the aeration pipe 6 by moving the hole-opening drill bit 1011 disposed at the bottom of the vehicle head 101 , and the hole-opening drill bit 1011 can be replaced with other hole-opening drill bits 1011 of different specifications to meet actual needs.

[0026] The upper end of the support frame 3 of the utility model is provided with two connecting slide rails 301, and the first fixing member 4 and the second fixing member 5 are movably connected to the two connecting slide rails 301. The first fixing member 4 includes two groups of first movable pulleys 401, a first connecting plate 402, a first limiting member 403, and a first limiting ring 404. The two groups of first movable pulleys 401 are respectively arranged on both sides of the first connecting plate 402, and the two groups of first movable pulleys 401 are movably connected to the two connecting slide rails 301. The first limiting member 403 is fixedly arranged on the upper end of the first connecting plate 402, and the first limiting ring 404 is fixedly arranged on the upper end of the first limiting member 403. The aeration pipe 6 is fixedly sleeved inside the first limiting ring 404.

[0027] The second fixing member 5 of the utility model includes two groups of second movable pulleys 501, a second connecting plate 502, a second limiting member 503, and a second limiting ring 504. The two groups of second movable pulleys 501 are respectively arranged on both sides of the second connecting plate 502, and the two groups of second movable pulleys 501 are movably connected to the two connecting slide rails 301. The second limiting member 503 is fixedly arranged at the upper end of the second connecting plate 502, and the second limiting ring 504 is fixedly arranged at the upper end of the second limiting member 503. The aeration pipe 6 is fixedly sleeved inside the second limiting ring 504.

[0028] Specifically, through the cooperation of the first movable pulley 401, the second movable pulley 501 and the connecting slide rail 301, the first fixing member 4 and the second fixing member 5 can drive the aeration pipe 6 to translate on the support frame 3, so that the aeration pipe 6 can be quickly translated to directly below the hole-opening drill bit 1011 at the bottom of the mobile vehicle head 101 to facilitate the hole-opening drill bit 1011 to open a hole in the aeration pipe 6.

[0029] Specifically, the diameter lengths of the first limiting ring 404 and the second limiting ring 504 are slightly larger than the diameter length of the aeration pipe 6 , so as to fix the aeration pipe 6 inside the first limiting ring 404 and the second limiting ring 504 .

[0030] The first limiting ring 404 of the utility model comprises a first upper ring 4041, a first rotating connecting member 4042, and a first lower ring 4043. The bottom of the first lower ring 4043 is fixedly connected to the upper end of the first limiting member 403. The first rotating connecting member 4042 is arranged between the first upper ring 4041 and the first lower ring 4043. The first upper ring 4041 is movably connected to the first lower ring 4043 through the first rotating connecting member 4042. One end of the first upper ring 4041 is provided with a first protrusion 4044, and one end of the first lower ring 4043 is provided with a first groove 4045. One end of the first upper ring 4041 is movably connected to one end of the first lower ring 4043 through the cooperation of the first protrusion 4044 and the first groove 4045.

[0031] The second limiting ring 504 of the utility model comprises a second upper ring 5041, a second rotating connecting member 5042 and a second lower ring 5043. The bottom of the second lower ring 5043 is fixedly connected to the upper end of the second limiting member 503. The second rotating connecting member 5042 is arranged between the second upper ring 5041 and the second lower ring 5043. The second upper ring 5041 is movably connected to the second lower ring 5043 through the second rotating connecting member 5042. One end of the second upper ring 5041 is provided with a second protrusion 5044, and one end of the second lower ring 5043 is provided with a second groove 5045. One end of the second upper ring 5041 is movably connected to one end of the second lower ring 5043 through the cooperation of the second protrusion 5044 and the second groove 5045.

[0032] Specifically, the first rotating connecting member 4042 and the second rotating connecting member 5042 are connecting torsion members between the first upper ring 4041, the first lower ring 4043 and the second upper ring 5041, the second lower ring 5043 respectively. The first upper ring 4041 and the second upper ring 5041 are movably connected to the first rotating connecting member 4042 and the second rotating connecting member 5042 respectively. The first upper ring 4041 and the second upper ring 5041 can be rotated by a certain angle through the first rotating connecting member 4042 and the second rotating connecting member 5042 respectively to disengage from the first lower ring 4043 and the second lower ring 5043.

[0033] The hole-opening machine 1 of the utility model also includes an opening and closing button 103, an indicator light 104, a hand-held joystick 105, and a driving motor 106. The opening and closing button 103 is fixedly arranged on the surface of the mobile vehicle head 101, the indicator light 104 is arranged above the opening and closing button 103, the hand-held joystick 105 is fixedly arranged on one side of the mobile vehicle head 101, and the driving motor 106 is fixedly installed on the back of the mobile vehicle head 101.

[0034] Specifically, since the mobile head 101 is movably arranged at one end of the support rod 102, the staff can hold the handheld joystick 105 and apply an upward or downward pulling force to it so that the mobile head 101 can move up and down a certain distance along the support rod 102, thereby allowing the mobile head 101 to move up and down a certain distance with the hole-opening drill bit 1011.

[0035] Specifically, the function of the on-off button 103 is to control the opening and closing of the mobile head 101 and to put the hole-opening drill bit 1011 in a non-working state or a working state. When the indicator light 104 is on, it indicates that the mobile head 101 is in the on state. When the indicator light 104 is not on, it indicates that the mobile head 101 is in the off state. The function of the drive motor 106 is to provide the hole-opening drill bit 1011 with the electrical energy required for operation.

[0036] The hole-opening machine 1 of the utility model also includes a support plate 107 and a ground-contacting bottom plate 108. A connecting piece 1071 is provided at the bottom of the support plate 107. The support plate 107 is movably connected to the support rod 102 through the connecting piece 1071. The upper surface of the support plate 107 is in contact with and fits the bottom surface of the support frame 3. The other end of the support rod 102 is fixedly connected to the ground-contacting bottom plate 108, and the bottom surface of the ground-contacting bottom plate 108 is in contact with and fits the ground.

[0037] Specifically, a row of vertically arranged slots are provided at the rod body position of the support rod 102, and one end of the connecting piece 1071 is sleeved in the slot of the support rod 102, and a groove corresponding to the slot is provided inside the connecting piece 1071, and the groove inside the connecting piece 1071 and the slot of the support rod 102 are movably engaged with each other, and a locking piece is also provided on the connecting piece 1071. When the locking piece is twisted downward, the groove inside the connecting piece 1071 and the slot of the support rod 102 are in a disengaged state, so that the support plate 107 can be translated up and down along the support rod 102 to adjust its height; when the locking piece is twisted upward, the groove inside the connecting piece 1071 and the slot of the support rod 102 are in a fixed engaging state, and the support plate 107 is fixedly set at the slot position on the support rod 102.

[0038] Reference Figure 1-6 The working principle of the quick hole opening device for the aeration pipeline of a biochemical pool of the utility model is:

[0039] When in use, first open the first upper ring 4041 and the second upper ring 5041, place the aeration pipe 6 on the first lower ring 4043 and the second lower ring 5043, and then close the first upper ring 4041 and the second upper ring 5041, so that the first protrusion 4044 and the second protrusion 5044 are respectively engaged with the first groove 4045 and the second groove 5045, and the aeration pipe 6 is fixedly installed on the first fixing member 4 and the second fixing member 5;

[0040] Secondly, the staff holds the first fixing member 4 and the second fixing member 5 and applies a thrust, and the first fixing member 4 and the second fixing member 5 can drive the aeration pipe 6 to translate on the support frame 3 through the cooperation of the first moving pulley 401, the second moving pulley 501 and the connecting slide rail 301, so that the aeration pipe 6 can translate to just below the hole-opening drill bit 1011 at the bottom of the mobile vehicle head 101, and then the staff presses the opening and closing button 103 to open the mobile vehicle head 101 so that the hole-opening drill bit 1011 is in a working state, and the staff holds the handheld rocker 105 and applies a downward pulling force, so that the mobile vehicle head 101 translates with the hole-opening drill bit 1011 in the direction of the surface of the aeration pipe 6 and contacts it, and the hole-opening drill bit 1011 can open a hole on the surface of the aeration pipe 6;

[0041] After the hole-opening drill bit 1011 has opened a hole on the surface of the aeration pipe 6, the staff member presses the start-stop button 103 again to close the mobile vehicle head 101 so that the hole-opening drill bit 1011 is in a non-working state. The staff member holds the handheld rocker 105 and applies an upward pulling force to stop the hole-opening drill bit 1011 from contacting the surface of the aeration pipe 6. At the same time, the mobile vehicle head 101 moves the hole-opening drill bit 1011 upward and resets. At this time, the staff member holds the first fixing member 4 and the second fixing member 5 again and applies a thrust, so that the first fixing member 4 and the second fixing member 5 drive the aeration pipe 6 to translate on the support frame 3 again, allowing the hole-opening drill bit 1011 to translate to above the next hole-opening position of the aeration pipe 6. Finally, the above process is repeated to open multiple holes in the aeration pipe 6.

[0042] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and cannot limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A rapid hole opening device for aeration pipes in a biochemical pool, characterized in that: The rapid hole-opening device includes a hole-opening machine, a support frame assembly, and an aeration pipe. The hole-opening machine and the support frame assembly are in contact with each other, and the aeration pipe is fixedly connected to the support frame assembly. The hole-opening machine includes a movable head and a support rod. The movable head is movably arranged at one end of the support rod. A hole-opening drill bit is arranged at the bottom of the movable head, and the hole-opening drill bit is arranged directly above the aeration pipe. The support frame assembly includes a support frame, a first fixing member, and a second fixing member. The first fixing member and the second fixing member are movably arranged above the support frame, and the aeration pipe is fixedly sleeved inside the first fixing member and the second fixing member.

2. A rapid hole opening device for aeration pipes in a biochemical pond according to claim 1, characterized in that: Two connecting slide rails are provided at the upper end of the support frame, and the first fixing member and the second fixing member are movably connected to the two connecting slide rails. The first fixing member includes two groups of first movable pulleys, a first connecting plate, a first limiting member, and a first limiting ring. The two groups of first movable pulleys are respectively arranged on both sides of the first connecting plate, and the two groups of first movable pulleys are movably connected to the two connecting slide rails. The first limiting member is fixedly arranged at the upper end of the first connecting plate, and the first limiting ring is fixedly arranged at the upper end of the first limiting member, and the aeration pipe is fixedly sleeved inside the first limiting ring.

3. A rapid hole opening device for aeration pipes in a biochemical pond according to claim 2, characterized in that: The second fixing member includes two groups of second movable pulleys, a second connecting plate, a second limiting member, and a second limiting ring. The two groups of second movable pulleys are respectively arranged on both sides of the second connecting plate. The two groups of second movable pulleys are movably connected to two connecting slide rails. The second limiting member is fixedly arranged at the upper end of the second connecting plate, the second limiting ring is fixedly arranged at the upper end of the second limiting member, and the aeration pipe is fixedly sleeved inside the second limiting ring.

4. A rapid hole opening device for aeration pipes in a biochemical pond according to claim 2, characterized in that: The first limiting ring includes a first upper ring, a first rotating connecting piece, and a first lower ring. The bottom of the first lower ring is fixedly connected to the upper end of the first limiting piece. The first rotating connecting piece is arranged between the first upper ring and the first lower ring. The first upper ring is movably connected to the first lower ring through the first rotating connecting piece. A first protrusion is arranged at one end of the first upper ring, and a first groove is arranged at one end of the first lower ring. One end of the first upper ring is movably clamped with one end of the first lower ring through the cooperation of the first protrusion and the first groove.

5. The rapid hole opening device for aeration pipe of a biochemical pond according to claim 3, characterized in that: The second limiting ring includes a second upper ring, a second rotating connecting piece, and a second lower ring. The bottom of the second lower ring is fixedly connected to the upper end of the second limiting piece. The second rotating connecting piece is arranged between the second upper ring and the second lower ring. The second upper ring is movably connected to the second lower ring through the second rotating connecting piece. A second protrusion is arranged at one end of the second upper ring, and a second groove is arranged at one end of the second lower ring. One end of the second upper ring is movably engaged with one end of the second lower ring through the cooperation of the second protrusion and the second groove.

6. The rapid hole opening device for aeration pipes in a biochemical pond according to claim 1, characterized in that: The hole opening machine also includes an opening and closing button, an indicator light, a handheld joystick, and a drive motor. The opening and closing button is fixedly arranged on the surface of the mobile vehicle head, the indicator light is arranged above the opening and closing button, the handheld joystick is fixedly arranged on one side of the mobile vehicle head, and the drive motor is fixedly installed on the back of the mobile vehicle head.

7. The rapid hole opening device for aeration pipes in a biochemical pond according to claim 1, characterized in that: The hole-opening machine also includes a support plate and a ground-contacting bottom plate. A connecting piece is provided at the bottom of the support plate. The support plate is movably connected to the support rod through the connecting piece. The upper surface of the support plate is in contact with and fits with the bottom surface of the support frame. The other end of the support rod is fixedly connected to the ground-contacting bottom plate, and the bottom surface of the ground-contacting bottom plate is in contact with and fits with the ground.

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