Tumor nursing equipment

Abstract

The invention relates to the technical field of tumor nursing, and discloses tumor nursing equipment which comprises a nursing bed, partition plates are arranged at the four corners of the nursing bed jointly, an auxiliary assembly is arranged between the partition plates and the nursing bed and used for assisting a patient in turning over, and a collecting barrel is arranged at the upper end of each partition plate and located on one side of the corresponding partition plate. The collecting barrel is communicated with a cleaning pipeline of a hospital, the upper end of the collecting barrel is communicated with a drainage pipe, the upper end of the drainage pipe sequentially penetrates through the nursing bed and the fixing plate, a blocking assembly is arranged between the collecting barrel and the auxiliary assembly and used for preventing smell in the recycling barrel from diffusing, and a leakage-proof assembly is arranged between the fixing plate and the auxiliary assembly. The leakage-proof assembly is used for preventing the articles from falling into the drainage pipe and the collecting barrel; the auxiliary assembly is arranged to provide certain thrust for a weak patient, the patient is helped to turn over, the collecting barrel is arranged at the upper end of the partition plate, the distance between the patient and the collecting barrel is reduced, and the patient can rapidly align with the collecting barrel to vomit.

Description

Technical Field

[0001] The present invention relates to the technical field of tumor nursing, and in particular to a tumor nursing device. Background Art

[0002] Cancer patients need chemotherapy, which may damage the gastrointestinal mucosal structure, leading to vomiting, loss of appetite and other symptoms. At the same time, because the patient's body is very weak, if he does not get up in time when he wants to vomit, he will vomit on the bed, which increases the work of the caregiver and affects the patient's mood;

[0003] The prior art discloses (publication number: CN110025441B) a nursing and rehabilitation device for radiotherapy of oncology, comprising a nursing bed body, the nursing bed body comprising a bed frame, a lower bed board is fixed on the bed frame, an upper bed board is provided on the right side of the lower bed board, the left side of the upper bed board is hinged and fixed to the bed frame, and the upper bed board is a structure that swings along the hinge point between the upper bed board and the bed frame; the nursing bed body also includes a support plate at the lower end, the front end of the support plate is placed in front of the bed frame, a vomit bucket is fixed on the support plate, the upper end of the vomit bucket is a conical structure, an annular water outlet pipe is provided in the upper end of the vomit bucket, a high-pressure water bucket is also fixed on the support plate, and the high-pressure water bucket is connected to the water outlet pipe; a negative pressure device is also fixed on the support plate, a vomit disposal device is provided in front of the negative pressure device, and the vomit bucket is connected to the vomit disposal device.

[0004] The vomit bucket in the prior art is set on one side of the nursing bed, and the patient still needs to get up to vomit, which cannot help the patient reduce the difficulty of vomiting. There is still a situation where the patient does not get up in time and vomits on the bed, which increases the workload of the accompanying person and affects the patient's mood. For this reason, we propose a tumor nursing device. Summary of the invention

[0005] The present invention is intended to provide a tumor nursing device to solve the problem that a weak patient vomits on the hospital bed due to failure to get up in time when he wants to vomit.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a tumor nursing device, including a nursing bed, wherein partitions are commonly provided at the four corners of the nursing bed, an auxiliary component is provided between the partition and the nursing bed, and the auxiliary component is used to assist the patient to turn over, a collecting bucket is provided at the upper end of the partition, and the collecting bucket is located on one side of the partition, the collecting bucket is connected to the hospital's cleaning pipeline, the upper end of the collecting bucket is connected to a drain pipe, and the upper end of the drain pipe passes through the nursing bed and the fixed plate in sequence, a blocking component is provided between the collecting bucket and the auxiliary component, and the blocking component is used to prevent the odor in the recovery bucket from diffusing, and a leak-proof component is provided between the fixed plate and the auxiliary component, and the leak-proof component is used to prevent objects from falling into the drain pipe and the collecting bucket.

[0007] The beneficial effects of this solution are: by setting up auxiliary components to help patients turn over, a certain thrust is provided for weak patients to help patients turn over, and patients are provided with the ability to turn over independently; by setting the collection bucket at the upper end of the partition, the distance between the patient and the collection bucket is reduced, so that the patient can quickly vomit into the collection bucket; the drain pipe is used to connect the collection bucket and transport the vomit to the clean pipeline of the hospital through the collection bucket; the blocking component is used to prevent the smell in the collection bucket from flowing back and causing odor in the ward, thereby improving the patient's treatment environment; the leak-proof component is used to prevent the patient's belongings from falling into the drain pipe.

[0008] Preferably, as an improvement, the auxiliary component includes a fixed plate, a flip plate, a mounting plate, a motor, a turntable and a push rod, the fixed plate is arranged at the upper end of the nursing bed, the flip plate is arranged on the side wall of the fixed plate, and the flip plate is located at the upper end of the nursing bed, the mounting plate is arranged between the nursing bed and the partition, the motor is arranged in the middle of the mounting plate, the turntable is eccentrically arranged at the output end of the motor, a limiting groove is provided at the end of the turntable away from the motor, the push rod slides vertically through the upper end of the nursing bed, a mounting ring is provided on the outer wall of the lower end of the push rod, a roller is rotatably provided on the outer wall of the mounting ring, and the roller is located in the limiting groove, a spring is provided on the outer wall of the push rod, and the spring is located between the nursing bed and the mounting ring, and a moving wheel is provided at the end of the push rod close to the flip plate.

[0009] The beneficial effects are as follows: the fixed plate is used to install the flip plate, the flip plate is used to assist weak patients to turn over, the mounting plate is used to install the motor, the motor is used to provide power for the auxiliary components, the turntable is eccentrically arranged at the output end of the motor, so that when the output end of the motor rotates, the turntable moves eccentrically, the limit groove is used to install the roller, the push rod is used to install the mounting ring and the moving wheel, the spring is used to provide pressure to the mounting ring, so that the roller on the outer wall of the push rod is always in the limit groove, and the moving wheel is used to push the flip plate, so that the flip plate rotates around the intersection with the fixed plate, thereby providing assistance for the patient to turn over.

[0010] Preferably, as an improvement, the ratio of the width of the fixed plate to the width of the flip plate is in the range of 0.4-0.5.

[0011] The beneficial effect is: by setting the ratio of the width of the flip plate to the fixed plate, it is more conducive to helping the patient turn over. When the patient lies flat on the nursing bed, when the ratio of the width of the fixed plate to the flip plate is 1:2, one-third of the patient is located on the fixed plate and two-thirds are located on the flip plate, so that when the flip plate rotates, the patient can turn over faster.

[0012] Preferably, as an improvement, the blocking assembly includes a first cavity, a first moving rod, a second cavity, a second moving rod and a plug. The first cavity is arranged at the upper end of the partition plate. The first moving rod is arranged at the lower end of the push rod, and the lower end of the first moving rod extends into the first cavity. A first moving plate is arranged at one end of the first moving rod extending into the first cavity, and the first moving plate is in contact with the inner wall of the first cavity. The second cavity is arranged on the inner wall of the lower end of the recovery bucket. A second moving plate is arranged in the second cavity. A second moving rod is arranged at the upper end of the second moving plate, and the upper end of the second moving rod penetrates out of the second cavity. The plug is arranged at one end of the second moving rod penetrating out of the second cavity, and the plug can abut against the lower end of the drain pipe. A conveying pipe is communicated between the first cavity and the second cavity. There is liquid in the first cavity, the second cavity and the conveying pipe.

[0013] The beneficial effects are as follows: By filling hydraulic oil in the first cavity, the second cavity and the conveying pipe, when the auxiliary assembly assists the vomiting patient to turn over, the push rod moves upward. At this time, the second moving rod drives the second moving plate to move upward, so that the hydraulic oil flows into the second cavity. At the same time, the first moving plate moves downward under the action of the hydraulic oil, so as to drive the first moving rod to pull the plug downward, and further make the plug not in contact with the lower end of the drain pipe, so that the vomit can flow into the collection bucket. When the auxiliary assembly lays the patient flat, the push rod moves downward. At this time, the second moving rod drives the second moving plate to move downward, so that the hydraulic oil flows into the first cavity. At the same time, the first moving plate moves upward under the action of the hydraulic oil, so as to drive the first moving rod to push the plug upward, and further make the plug in contact with the lower end of the drain pipe to prevent the smell in the collection bucket from flowing back.

[0014] Preferably, as an improvement, the leak-proof assembly includes a mounting seat, a rotating rod, a cover plate and a pull rope. A connecting groove is formed through between the fixing plate and the nursing bed. The cover plate is arranged at the upper end of the connecting groove, and the cover plate can cover the drain pipe. The mounting seat is arranged at the lower end of the nursing bed. The rotating rod is arranged in the mounting seat, and one end of the rotating rod is in contact with the outer wall of the turntable. The pull rope is arranged in the connecting groove, and one end of the pull rope is arranged at the end of the rotating rod far away from the turntable, and the other end is arranged at the lower end of the cover plate.

[0015] The beneficial effects are as follows: When the turntable moves to the highest point under the action of the motor, the end of the rotating rod in contact with the turntable is lifted and rises, so that the other end of the rotating rod descends and pulls the pull rope, and makes the pull rope straight, so as to pull the cover plate through the pull rope and open the cover plate. When the turntable moves to the lowest point under the action of the motor, the end of the rotating rod in contact with the turntable descends as the turntable descends, so that the other end of the rotating rod rises, so that the pull rope is slack, and the cover plate is closed under its own gravity to prevent objects from falling into the drain pipe.

[0016] Preferably, as an improvement, the rotating rod is in a "U" shape and is sleeved on the outer wall of the turntable.

[0017] The beneficial effects are as follows: By setting the rotating rod in a "U" shape, the stability between the rotating rod and the turntable can be increased, preventing the rotating rod from detaching from the turntable.

[0018] Preferably, as an improvement, the inner wall of the drain pipe is annularly provided with water outlets, and electromagnetic valves are arranged inside the water outlets. A button switch is provided at the lower end of the nursing bed, and the button switch is electrically connected to the electromagnetic valve, and the rotating rod can contact the button switch.

[0019] The beneficial effects are as follows: When the patient wants to vomit, the auxiliary component starts to assist the patient to turn over. When the rotating rod moves to the highest point under the action of the turntable, the cover plate is in an open state, the plug detaches from the drain pipe, and the rotating rod contacts the button switch, thereby starting the electromagnetic valve to discharge water from the water outlet. The water discharged from the water outlet will clean the drain pipe and the collection bucket. When the patient wants to lie flat, the turntable is rotated, and the auxiliary component descends. At this time, the rotating rod disengages from the contact button, thereby closing the electromagnetic valve and stopping the water from flowing out of the water outlet.

[0020] Preferably, as an improvement, a slide rail is provided at the upper end of the partition board, and the mounting plate is slidably arranged in the slide rail.

[0021] The beneficial effects are as follows: By changing the position of the mounting plate in the slide rail, the roller can be made to leave the limiting groove, facilitating the staff to replace rollers of different diameters, so as to adapt to patients with different physical conditions.

[0022] Preferably, as an improvement, a plurality of protrusions are provided on the outer wall of the turntable, and the heights between adjacent protrusions are different.

[0023] The beneficial effects are as follows: By providing a plurality of protrusions on the outer wall of the turntable, the rotating rod in contact with the outer wall of the turntable will have undulations, so that the cover plate can be shaken through the pull rope, thereby reminding the patient of the position of the collection bucket and enabling the patient to vomit accurately into the collection bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the tumor nursing device according to an embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the auxiliary component according to an embodiment of the present invention;

[0026] Figure 3 It is a partial sectional structural schematic diagram of the first cavity and the nursing bed according to an embodiment of the present invention;

[0027] Figure 4 It is a sectional structural schematic diagram of the collection bucket and the second cavity according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0028] The following is further detailed through specific embodiments:

[0029] The figure marks in the drawings of the specification include: nursing bed 1, partition 2, collecting bucket 3, drain pipe 4, fixing plate 5, flip plate 6, mounting plate 7, motor 8, turntable 9, push rod 10, limit groove 11, mounting ring 12, roller 13, spring 14, moving wheel 15, first cavity 16, first moving rod 17, second cavity 18, second moving rod 19, plug 20, delivery pipe 21, mounting seat 22, rotating rod 23, cover plate 24, pull rope 25, connecting groove 26, water outlet 27, button switch 28, slide rail 29, protrusion 30.

[0030] Example

[0031] The embodiment is basically as shown in the attached Figure 1-4 As shown, Figure 1 The tumor nursing device shown in the figure comprises a nursing bed 1, wherein a partition 2 is fixedly installed at the four corners of the nursing bed 1, an auxiliary component is arranged between the partition 2 and the nursing bed 1, and the auxiliary component is used to assist the patient to turn over, and a collection bucket 3 is arranged at the upper end of the partition 2, such as Figure 2 As shown, the collecting barrel 3 is located on one side of the partition 2, and the collecting barrel 3 is connected to the cleaning pipeline of the hospital. The upper end of the collecting barrel 3 is connected to the drain pipe 4, and the upper end of the drain pipe 4 passes through the nursing bed 1 and the fixed plate 5 in sequence. A blocking component is provided between the collecting barrel 3 and the auxiliary component, and the blocking component is used to prevent the odor in the recovery barrel from diffusing. A leak-proof component is provided between the fixed plate 5 and the auxiliary component, and the leak-proof component is used to prevent objects from falling into the drain pipe 4 and the collecting barrel 3.

[0032] like Figure 2The auxiliary components shown include a fixed plate 5, a flip plate 6, a mounting plate 7, a motor 8, a turntable 9 and a push rod 10. The fixed plate 5 is fixedly mounted on the rear side of the upper end of the nursing bed 1, the flip plate 6 is hingedly mounted on the front wall of the fixed plate 5, and the flip plate 6 is located at the upper end of the nursing bed 1. The ratio of the width of the fixed plate 5 to the flip plate 6 is in the range of 0.4-0.5. A slide rail 29 is fixedly mounted on the upper end of the partition 2, the mounting plate 7 can be slidably mounted in the slide rail 29, and the mounting plate 7 can be fixed in the slide rail 29 by bolts. The motor 8 is fixedly mounted in the middle of the mounting plate 7, the turntable 9 is eccentrically fixedly mounted on the output end of the motor 8, a limiting groove 11 is provided at the front end of the turntable 9, the push rod 10 vertically slides through the upper end of the nursing bed 1, a mounting ring 12 is fixedly mounted on the outer wall of the lower end of the push rod 10, a roller 13 is rotatably mounted on the outer wall of the mounting ring 12, and the roller 13 The roller 13 is installed in a rolling manner in the limiting groove 11, and the roller 13 can be replaced with different diameters to adjust the flipping amplitude of the flip plate 6. When the patient is very weak, the mounting plate 7 is unlocked to make the mounting plate 7 away from the push rod 10, and then the roller 13 leaves the limiting groove 11. At this time, the staff replaces it with a roller 13 with a larger diameter, so that the flipping amplitude of the flip plate 6 is larger, thereby reducing the burden on the patient, and then the mounting plate 7 is moved close to the push rod 10 so that the new roller 13 is located in the limiting groove 11. Finally, the mounting plate 7 is fixed to the inside of the slide rail 29 by bolts. The outer wall of the push rod 10 is provided with a spring 14, and the spring 14 is located between the nursing bed 1 and the mounting ring 12. A moving wheel 15 is fixedly installed on the upper end of the push rod 10. The moving wheel 15 contacts the lower end of the flip plate 6, and can push the flip plate 6 to flip.

[0033] like Figure 3 and Figure 4 The plugging assembly shown includes a first cavity 16, a first moving rod 17, a second cavity 18, a second moving rod 19 and a plug 20. Figure 3 As shown, the first cavity 16 is fixedly mounted on the upper end of the partition 2, the first moving rod 17 is fixedly mounted on the lower end of the push rod 10, and the lower end of the first moving rod 17 extends into the first cavity 16, and the first moving plate is fixedly mounted on one end of the first moving rod 17 extending into the first cavity 16, and the first moving plate is in contact with the inner wall of the first cavity 16, as shown in FIG. Figure 4 As shown, the second cavity 18 is fixedly installed on the inner wall of the lower end of the recovery barrel, a second movable plate is slidably installed in the second cavity 18, a second movable rod 19 is fixedly installed on the upper end of the second movable plate, and the upper end of the second movable rod 19 passes through the second cavity 18, a plug 20 is fixedly installed on the upper end of the second movable rod 19, and the plug 20 can abut against the lower end of the drain pipe 4, a delivery pipe 21 is connected between the first cavity 16 and the second cavity 18, and hydraulic oil is provided in the first cavity 16, the second cavity 18 and the delivery pipe 21.

[0034] like Figure 2 and Figure 4The leak-proof component shown includes a mounting base 22, a rotating rod 23, a cover plate 24, and a pull rope 25. As Figure 2 shown, the mounting base 22 is fixedly installed at the lower end of the nursing bed 1. The rotating rod 23 is arranged in the mounting base 22 and is in a "U" shape. The rotating rod 23 is sleeved on the outer wall of the turntable 9, and a number of protrusions 30 are provided on the outer wall of the turntable 9, and the heights of adjacent protrusions 30 are different, so that the rotating rod 23 in contact with the outer wall of the turntable 9 has undulations, and thus the cover plate 24 can be shaken through the pull rope 25, further reminding the patient of the position of the collection bucket 3, enabling the patient to vomit accurately into the collection bucket 3. As Figure 4 shown, a connecting groove 26 is贯通 opened between the fixing plate 5 and the nursing bed 1. The cover plate 24 rotates at the upper end of the connecting groove 26, and the cover plate 24 can cover the drain pipe 4. The pull rope 25 is arranged in the connecting groove 26, and one end of the pull rope 25 is fixedly installed at the end of the rotating rod 23 away from the turntable 9, and the other end is arranged at the lower end of the cover plate 24.

[0035] As Figure 4 shown, a water outlet 27 is annularly arranged on the inner wall of the drain pipe 4 shown, and a solenoid valve is arranged inside the water outlet 27. As Figure 2 shown, a push-button switch 28 is arranged at the lower end of the nursing bed 1 shown. The push-button switch 28 is electrically connected to the solenoid valve, and the rotating rod 23 can contact the push-button switch 28.

[0036] The specific implementation process is as follows:

[0037] Before using the device, a suitable roller 13 is selected according to the patient's physical condition. When a weak patient wants to vomit, the motor 8 is started to drive the turntable 9 to rotate. Since the turntable 9 is eccentrically arranged and the push rod 10 can only move in the vertical direction, the roller 13 located in the limit groove 11 makes a vertical movement. When the turntable 9 rotates to the highest point, the push rod 10 moves upward under the action of the roller 13, so that the moving wheel 15 pushes the flip plate 6 to flip the flip plate 6, thereby assisting the patient to turn over and vomit. In the process of the push rod 10 moving upward, the push rod 10 drives the first moving rod 17 at the lower end to move upward, and the first moving rod 17 drives the first moving plate to move upward, thereby increasing the volume inside the first cavity 16, so that the hydraulic oil is pumped into the first cavity 16 under the action of the delivery pipe 21. 6 moves, thereby causing the second movable plate in the second cavity 18 to move downward, so that the second movable rod 19 drives the plug 20 to disengage from the lower end of the drain pipe 4, so that the vomit can enter the collection bucket 3 and be discharged into the clean pipeline of the hospital. In the process of the turntable 9 rotating to the highest point, the turntable 9 will lift the rotating rod 23, so that the rotating rod 23 rotates around the mounting seat 22, so that the other end of the rotating rod 23 pulls the pull rope 25, so that the pull rope 25 drives the cover plate 24 to rotate, thereby exposing the drain pipe 4, allowing the patient to vomit. When the rotating rod 23 rises to the highest point under the action of the turntable 9, the rotating rod 23 presses the button switch 28 at the lower end of the nursing bed 1, thereby opening the solenoid valve, allowing water to flow out of the water outlet 27, which is convenient for cleaning the drain pipe 4 and the collection bucket 3 and keeping the drain pipe 4 and the collection bucket 3 clean.

[0038] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A tumor nursing device, comprising a nursing bed, characterized in that: Partition plates are provided at the four corners of the nursing bed. An auxiliary component is provided between the partition plate and the nursing bed. The auxiliary component is used to assist the patient in turning over. A collection bucket is provided at the upper end of the partition plate, and the collection bucket is located on one side of the partition plate. The collection bucket is connected to the cleaning pipeline of the hospital. A drain pipe is connected to the upper end of the collection bucket, and the upper end of the drain pipe sequentially penetrates through the nursing bed and the fixing plate. A blocking component is provided between the collection bucket and the auxiliary component. The blocking component is used to prevent the odor in the recycling bucket from spreading. A leakage prevention component is provided between the fixing plate and the auxiliary component. The leakage prevention component is used to prevent items from falling into the drain pipe and the collection bucket.

2. A tumor nursing device according to claim 1, characterized in that: The auxiliary component includes a fixing plate, a turning plate, a mounting plate, a motor, a turntable, and a push rod. The fixing plate is provided at the upper end of the nursing bed. The turning plate is provided on the side wall of the fixing plate, and the turning plate is located at the upper end of the nursing bed. The mounting plate is provided between the nursing bed and the partition plate. The motor is provided in the middle of the mounting plate. The turntable is eccentrically provided at the output end of the motor. A limiting groove is opened at one end of the turntable away from the motor. The push rod vertically slides through the upper end of the nursing bed. An installation ring is provided on the outer wall of the lower end of the push rod. A roller is rotatably provided on the outer wall of the installation ring, and the roller is located in the limiting groove. A spring is sleeved on the outer wall of the push rod, and the spring is located between the nursing bed and the installation ring. A moving wheel is provided at one end of the push rod close to the turning plate.

3. A tumor nursing device according to claim 2, characterized in that: The value range of the ratio of the width of the fixing plate to the width of the turning plate is 0.4 - 0.

5.

4. The tumor nursing device according to claim 1, characterized in that: The blocking component includes a first cavity, a first moving rod, a second cavity, a second moving rod, and a plug. The first cavity is provided at the upper end of the partition plate. The first moving rod is provided at the lower end of the push rod, and the lower end of the first moving rod extends into the first cavity. A first moving plate is provided at one end of the first moving rod extending into the first cavity, and the first moving plate is in contact with the inner wall of the first cavity. The second cavity is provided on the inner wall of the lower end of the recycling bucket. A second moving plate is provided in the second cavity. A second moving rod is provided at the upper end of the second moving plate, and the upper end of the second moving rod penetrates out of the second cavity. The plug is provided at one end of the second moving rod penetrating out of the second cavity, and the plug can abut against the lower end of the drain pipe. A delivery pipe is connected between the first cavity and the second cavity. Hydraulic oil is provided in the first cavity, the second cavity, and the delivery pipe.

5. The tumor nursing device according to claim 2, characterized in that: The leakage prevention component includes a mounting seat, a rotating rod, a cover plate, and a pull rope. A connection groove is opened through between the fixing plate and the nursing bed. The cover plate is provided at the upper end of the connection groove, and the cover plate can cover the drain pipe. The mounting seat is provided at the lower end of the nursing bed. The rotating rod is provided in the mounting seat, and one end of the rotating rod is in contact with the outer wall of the turntable. The pull rope is provided in the connection groove, and one end of the pull rope is provided at the end of the rotating rod away from the turntable, and the other end is provided at the lower end of the cover plate.

6. A tumor nursing device according to claim 5, characterized in that: The rotating rod is in a "U" shape and is sleeved on the outer wall of the turntable.

7. A tumor nursing device according to claim 6, characterized in that: An outlet is annularly provided on the inner wall of the drain pipe. An electromagnetic valve is provided inside the outlet. A button switch is provided at the lower end of the nursing bed. The button switch is electrically connected to the electromagnetic valve, and the rotating rod can be in contact with the button switch.

8. The tumor nursing device according to claim 7, characterized in that: A slide rail is provided at the upper end of the partition plate. The mounting plate is slidably provided in the slide rail.

9. The tumor nursing device according to claim 8, characterized in that: A number of protrusions are provided on the outer wall of the turntable, and the heights between adjacent protrusions are different.

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