Operating table with adjustable height

Abstract

The utility model relates to the technical field of operating tables, and discloses a height-adjustable operating table which comprises a base, a hydraulic cylinder is installed on the base, an operating table body is installed at the output end of the hydraulic cylinder, a first oil port and a second oil port are formed in the two ends of the hydraulic cylinder respectively, the first oil port is communicated with an electromagnetic three-way valve, and the second oil port is communicated with an electromagnetic three-way valve. The other two valve ports of the electromagnetic three-way valve are communicated with the output end of a high-pressure pump and an oil pool respectively, the second oil port is communicated with the oil pool, the input end of the high-pressure pump is communicated with the oil pool, during shutdown, the output end of the high-pressure pump is communicated with the oil pool through the electromagnetic three-way valve, and a cooling mechanism is arranged on the outer side of the first oil port. The device solves the problems that starting and stopping of the hydraulic cylinder are delayed, and the supporting height is unstable due to the influence of the oil temperature, and the accuracy and stability of height adjustment of the operating table are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of operating tables, and more particularly to an operating table capable of adjusting height. Background Art

[0002] The operating table is the working platform for doctors when performing surgery on patients. It is a necessary medical tool in medical surgery. It is used to support patients during surgery. The position can be adjusted according to the needs of the surgical operation. It can more conveniently provide doctors with a high-quality surgical environment and better perform surgery.

[0003] Currently, operating tables on the market use hydraulic cylinders for lifting and lowering control. However, the high-pressure pump that delivers oil has inertia and will continue to deliver a certain amount of high-pressure oil when it stops, causing the hydraulic cylinder to continue to rise. During startup, the initial oil pressure pumped by the high-pressure pump is relatively low, making it difficult for the hydraulic cylinder to move. In other words, the hydraulic cylinder control has problems such as delayed start and stop action and inaccurate stop position. At the same time, the oil temperature rises after passing through the high-pressure pump, and its volume expands slightly. After entering the hydraulic cylinder, it slowly cools down and can easily cause a slight displacement of the hydraulic cylinder output shaft during contraction, which will have a greater impact on delicate surgery. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an operating table with accurate and stable height adjustment.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A height-adjustable operating table includes a base, a hydraulic cylinder is installed on the base, an operating table body is installed on the output end of the hydraulic cylinder, oil port 1 and oil port 2 are respectively provided at both ends of the hydraulic cylinder, oil port 1 is connected to an electromagnetic three-way valve, the other two valve ports of the electromagnetic three-way valve are respectively connected to the output end of a high-pressure pump and an oil pool, the oil port 2 is connected to the oil pool, and the input end of the high-pressure pump is connected to the oil pool. When the machine is shut down, the electromagnetic three-way valve connects the output end of the high-pressure pump to the oil pool, and a cooling mechanism is provided on the outside of the oil port 1.

[0007] The present invention is further configured as follows: the hydraulic cylinder includes a bottom cover, a cylinder body is sealedly mounted on the bottom cover, a piston is slidably connected to the cylinder body, the output end of the piston extends upward out of the cylinder body and is connected to the operating table body, the oil port 1 is opened on the bottom cover, one end of the oil port 1 is connected to the inner cavity of the cylinder body, and the oil port 2 is opened at the top end of the cylinder body.

[0008] The utility model is further configured as follows: the electromagnetic three-way valve includes opening one, opening two and opening three, the opening one is connected to the oil port one, the opening two is connected to the output end of the high-pressure pump, and the opening three is connected to the oil pool.

[0009] The utility model is further configured as follows: a cooling cavity is opened at the bottom of the hydraulic cylinder, one end of the oil port facing the inside of the hydraulic cylinder is connected to the cooling cavity, a through hole is provided at the top of the cooling cavity, the through hole is connected to the inner cavity of the hydraulic cylinder, and the cooling mechanism is arranged below the cooling cavity.

[0010] The utility model is further configured as follows: the cooling mechanism includes a motor, a mounting groove is opened through the base, the hydraulic cylinder can be pressed on the mounting groove, an air inlet grille is installed at one end of the mounting groove facing away from the hydraulic cylinder, the motor is installed on the air inlet grille, the output shaft of the motor extends into the mounting groove and is installed with an impeller, and the air outlet direction of the impeller is toward the cooling chamber.

[0011] The utility model is further configured as follows: the cooling chamber is configured as an arcuate surface on one side facing the mounting groove; a plurality of air ducts are evenly opened on the bottom of the hydraulic cylinder; one end of the air duct is connected to the mounting groove; the other end of the air duct passes through the bottom of the hydraulic cylinder and is connected to the external environment; the air ducts are spaced apart and close to the arcuate surface of the cooling chamber.

[0012] The advantages of the utility model are:

[0013] 1. An electromagnetic three-way valve is installed between the high-pressure pump and the hydraulic cylinder. The other valve port of the electromagnetic three-way valve is connected to the oil pool. When the hydraulic cylinder needs to stop moving, the high-pressure pump is turned off. At the same time, the electromagnetic three-way valve closes the oil port 1, connecting the output end of the high-pressure pump to the oil pool. The oil continuously output by the high-pressure pump due to inertia flows back into the oil pool, and the oil chamber at the bottom of the hydraulic cylinder is closed in time, which improves the response speed of the hydraulic cylinder and improves the adjustment accuracy.

[0014] 2. A cooling chamber is provided between the oil port 1 and the oil chamber of the hydraulic cylinder. A number of air ducts are spaced apart at the bottom of the cooling chamber. The air ducts extend along the bottom surface of the cooling chamber. The cooling mechanism is a fan composed of a motor and an impeller. The air outlet of the fan is blown toward the cooling chamber and finally discharged along the air duct, which can cool the cooling chamber and promote the oil in the cooling chamber to quickly reach room temperature, thereby preventing the oil from cooling and shrinking during the operation and improving the stability of the hydraulic cylinder adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 For the Figure 1 The AA line cross-section shown;

[0017] Figure 3 for Figure 1 An enlarged view of part B is shown;

[0018] Figure 4 For the Figure 1 The CC line cross-section shown;

[0019] Figure 5 for Figure 4 An enlarged view of portion D is shown;

[0020] In the figure: 1. Base; 11. Mounting slot; 12. Air inlet grille; 2. Hydraulic cylinder; 21. Bottom cover; 22. Cylinder body; 23. Piston; 24. Oil port 1; 241. Cooling chamber; 242. Through hole; 25. Oil port 2; 26. Solenoid three-way valve; 261. Opening 1; 262. Opening 2; 263. Opening 3; 27. High-pressure pump; 28. Oil pool; 3. Operating table body; 4. Cooling mechanism; 41. Motor; 42. Impeller; 5. Airway. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0023] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0024] See also Figure 1-5 , the utility model provides the following technical solutions:

[0025] A height-adjustable operating table comprises a base 1, a hydraulic cylinder 2 is mounted on the base 1, an operating table body 3 is mounted on the output end of the hydraulic cylinder 2, and the height of the operating table body 3 can be adjusted to suit the operation by controlling the movement of the output end of the hydraulic cylinder 2;

[0026] An oil port 1 24 and an oil port 2 25 are provided at both ends of the hydraulic cylinder 2, respectively. The oil port 1 24 is connected to an electromagnetic three-way valve 26, and the other two valve ports of the electromagnetic three-way valve 26 are connected to the output end of the high-pressure pump 27 and the oil pool 28, respectively. The oil port 25 is connected to the oil pool 28, and the input end of the high-pressure pump 27 is connected to the oil pool 28. When the machine is shut down, the electromagnetic three-way valve 26 connects the output end of the high-pressure pump 27 to the oil pool 28, preventing oil from continuing to enter the hydraulic cylinder 2 after shutdown, thereby improving the response speed of the hydraulic cylinder 2 and the accuracy of the height adjustment of the operating table;

[0027] A cooling mechanism 4 is provided on the outside of the oil port 1 24, which can cool the oil before it enters the hydraulic cylinder 2, thereby preventing the table from moving during the operation when the oil is slowly cooled, improving the stability of the operating table adjustment and avoiding affecting the operation.

[0028] The hydraulic cylinder 2 includes a bottom cover 21, on which a cylinder body 22 is sealed and mounted, a piston 23 being slidably connected inside the cylinder body 22, an output end of the piston 23 extending upward out of the cylinder body 22 and connected to the operating table body 3, an oil port 1 24 being provided on the bottom cover 21, one end of the oil port 1 24 being connected to the inner cavity of the cylinder body 22, and an oil port 2 25 being provided at the top end of the cylinder body 22.

[0029] The electromagnetic three-way valve 26 includes an opening 1 261 , an opening 262 , and an opening 3 263 . The opening 1 261 is connected to the oil port 1 24 , the opening 262 is connected to the output end of the high-pressure pump 27 , and the opening 3 263 is connected to the oil pool 28 .

[0030] When the hydraulic cylinder 2 is operating normally, the electromagnetic three-way valve 26 closes the opening 3 263. At this time, the output end of the high-pressure pump 27 is connected to the oil port 1 24 through the electromagnetic three-way valve 26. The high-pressure pump 27 can draw oil from the oil pool 28 and deliver it to the hydraulic cylinder 2, forcing the operating table body 3 to rise.

[0031] When the hydraulic cylinder 2 is shut down, the electromagnetic three-way valve 26 closes the opening 261. At this time, the output end of the high-pressure pump 27 is connected to the oil pool 28 through the electromagnetic three-way valve 26. The oil that the high-pressure pump 27 continues to output due to inertia returns to the oil pool 28. The hydraulic cylinder 2 has no oil input and stops moving immediately, and the height of the operating table body 3 is fixed.

[0032] When the operating table body 3 needs to be reset, the electromagnetic three-way valve 26 closes the opening 3 263, the high-pressure pump 27 does not work, and the oil in the hydraulic cylinder 2 is squeezed through the electromagnetic three-way valve 26 and the high-pressure pump 27 under the action of gravity and flows back into the oil pool 28.

[0033] A cooling chamber 241 is provided at the bottom of the hydraulic cylinder 2. One end of the oil port 1 24 facing the interior of the hydraulic cylinder 2 is connected to the cooling chamber 241. A through hole 242 is provided at the top of the cooling chamber 241. The through hole 242 is connected to the inner cavity of the hydraulic cylinder 2. The cooling mechanism 4 is provided below the cooling chamber 241.

[0034] The cooling mechanism 4 includes a motor 41. A mounting slot 11 is formed through the base 1. The hydraulic cylinder 2 can be pressed against the mounting slot 11. An air inlet grille 12 is installed at the bottom of the mounting slot 11. The motor 41 is mounted on the air inlet grille 12. The output shaft of the motor 41 extends into the mounting slot 11 and is equipped with an impeller 42 to form a fan. The air outlet direction of the fan is toward the cooling chamber 241.

[0035] The side of the cooling cavity 241 facing the mounting groove 11 is configured as an arc-shaped surface, which increases the bottom area, that is, increases the heat exchange area, and facilitates the cooling of the oil;

[0036] A plurality of air ducts 5 are evenly arranged at the bottom of the hydraulic cylinder 2. One end of the air duct 5 is connected to the mounting groove 11, and the other end of the air duct 5 passes through the bottom of the hydraulic cylinder 2 and is connected to the external environment. The air duct 5 is spaced apart and arranged close to the arc surface of the cooling chamber 241.

[0037] The cooling mechanism 4 blows air toward the cooling chamber 241 and discharges it through a number of air ducts 5. In the process of the air being blown out and discharged through the air ducts 5, the outer shell of the cooling chamber 241 can be cooled, thereby promoting heat exchange and accelerating the cooling of the oil in the cooling chamber 241, thereby avoiding excessive oil temperature in the hydraulic cylinder 2 and large contraction during cooling, and improving the stability of the height of the output shaft of the hydraulic cylinder 2, thereby ensuring the stability of the height of the operating table body 3 and facilitating the operation.

[0038] Specifically, an electromagnetic three-way valve 26 is provided between the high-pressure pump 27 and the hydraulic cylinder 2. The other valve port of the electromagnetic three-way valve 26 is connected to the oil pool 28. When the hydraulic cylinder 2 needs to stop moving, the high-pressure pump 27 is turned off. At the same time, the electromagnetic three-way valve 26 closes the oil port 1 24, connecting the output end of the high-pressure pump 27 to the oil pool 28. The oil continuously output by the high-pressure pump 27 due to inertia flows back into the oil pool 28, and the oil chamber at the bottom of the hydraulic cylinder 2 is promptly closed, thereby improving the response speed of the hydraulic cylinder 2 and improving the adjustment accuracy.

[0039] A cooling chamber 241 is provided between the oil port 1 24 and the oil chamber of the hydraulic cylinder 2. A plurality of air passages 5 are spaced apart at the bottom of the cooling chamber 241. The air passages 5 extend along the bottom surface of the cooling chamber 241. The cooling mechanism 4 is a fan composed of a motor 41 and an impeller 42. The air from the fan is blown toward the cooling chamber 241 and finally discharged along the air passage 5, which can cool the cooling chamber 241 and promote the oil in the cooling chamber 241 to quickly reach room temperature, thereby preventing the oil from cooling and shrinking during the operation, and improving the stability of the adjustment of the hydraulic cylinder 2.

[0040] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0042] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar pairs of elements and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A height-adjustable operating table comprising a base (1), characterized in that: A hydraulic cylinder (2) is installed on the base (1), and an operating table body (3) is installed on the output end of the hydraulic cylinder (2). An oil port 1 (24) and an oil port 2 (25) are respectively provided at both ends of the hydraulic cylinder (2). The oil port 1 (24) is connected to an electromagnetic three-way valve (26), and the other two valve ports of the electromagnetic three-way valve (26) are respectively connected to the output end of a high-pressure pump (27) and an oil pool (28). The oil port 2 (25) is connected to the oil pool (28), and the input end of the high-pressure pump (27) is connected to the oil pool (28). When the machine is stopped, the electromagnetic three-way valve (26) connects the output end of the high-pressure pump (27) to the oil pool (28). A cooling mechanism (4) is provided on the outside of the oil port 1 (24).

2. The height-adjustable operating table according to claim 1, characterized in that: The hydraulic cylinder (2) includes a bottom seal (21), a cylinder body (22) is sealed and mounted on the bottom seal (21), a piston (23) is slidably connected in the cylinder body (22), an output end of the piston (23) extends upward out of the cylinder body (22) and is connected to the operating table body (3), an oil port 1 (24) is provided on the bottom seal (21), one end of the oil port 1 (24) is communicated with the inner cavity of the cylinder body (22), and an oil port 2 (25) is provided at the top end of the cylinder body (22).

3. The height-adjustable operating table according to claim 2, characterized in that: The electromagnetic three-way valve (26) includes an opening 1 (261), an opening 2 (262) and an opening 3 (263), wherein the opening 1 (261) is connected to the oil port 1 (24), the opening 2 (262) is connected to the output end of the high-pressure pump (27), and the opening 3 (263) is connected to the oil pool (28).

4. The height-adjustable operating table according to claim 1, characterized in that: A cooling cavity (241) is provided at the bottom of the hydraulic cylinder (2); one end of the oil port (24) facing the interior of the hydraulic cylinder (2) is connected to the cooling cavity (241); a through hole (242) is provided at the top of the cooling cavity (241); the through hole (242) is connected to the inner cavity of the hydraulic cylinder (2); and the cooling mechanism (4) is provided below the cooling cavity (241).

5. The height-adjustable operating table according to claim 4, characterized in that: The cooling mechanism (4) includes a motor (41), a mounting groove (11) is provided on the base (1), the hydraulic cylinder (2) can be pressed on the mounting groove (11), an air inlet grille (12) is installed at one end of the mounting groove (11) away from the hydraulic cylinder (2), the motor (41) is installed on the air inlet grille (12), the output shaft of the motor (41) extends into the mounting groove (11) and is provided with an impeller (42), and the air outlet direction of the impeller (42) is toward the cooling chamber (241).

6. The height-adjustable operating table according to claim 5, characterized in that: The cooling cavity (241) is provided with an arcuate surface on one side facing the mounting groove (11), and a plurality of air passages (5) are evenly provided at the bottom of the hydraulic cylinder (2). One end of the air passage (5) is connected to the mounting groove (11), and the other end of the air passage (5) passes through the bottom of the hydraulic cylinder (2) and is connected to the external environment. The air passages (5) are spaced apart and close to the arcuate surface of the cooling cavity (241).

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